CN2442001Y - Full gear capacity variable device - Google Patents

Abstract

The utility model relates to serial volume changing devices, each of which is mainly composed of three parts of gear components and basically presents the advantages of traditional volume type structures. The utility model has the advantages of reliable radial sealing, wear resistance, large discharge capacity, small size, simple and compact structure, output of stable flow quantity and pressure, simple manufacturing process, easy production, and wide selection of materials, and both metallic and nonmetallic materials can be selected. The utility model is suitable for various industries, and pumps and motors which are required by various working media. For example, if used on engines, the utility model can realize the purpose of not using gas inlet and outlet valve systems and can obtain the advantages of large discharge capacity, large torque, small size, simple lubrication, no dead point, and low processing difficulty. The serial volume changing devices are a series of mechnisms with wide application.

Description

All-teeth positive-displacement apparatus

The utility model relates to the positive displacement variable-displacement equipment, and its structure can be directly used in pump, motor and the motor of various working medium.

At present, the structure of variable-displacement equipment is a lot, but its deficiency is respectively arranged, and rotor and its radial seal of blade type variable-displacement equipment are unreliable, and to the requirement on machining accuracy height, the life-span is short, and cost is higher; Gear, plunger and the bulky complexity of piston variable-displacement equipment; Ball-shape variable-capacitance device processing technology difficulty is difficult for ensuring the quality of products.

The purpose of this utility model be to provide a kind of simple in structure, sealing is reliable, be not afraid of wearing and tearing, the life-span is long, cost is low all-teeth positive-displacement apparatus.

The purpose of this utility model is achieved in that as shown in drawings, it comprises the master gear and the servo-actuated planetary pinion that have in internal gear cylinder body and the cylinder body, internal gear of the present utility model 3 (comprises ellipse for the class ellipse, the minor axis limit is concave, convex, flat symmetry shape long-round-shape), pack in the internal gear servo-actuated planetary pinion 2 and master gear 1; Master gear of the present utility model is described with the notion of round end gear, when the round end of master gear is one, be that master gear is when being positive circular, servo-actuated planetary pinion number is three, when the round end of master gear is N, be that master gear is a petal-shaped, servo-actuated planet tooth number should be M, and its number relation should satisfy N-M=2 (N in the formula 〉=3, M 〉=1, N, M is a positive integer), be fixed with transmission shaft 4 on the master gear, the transmission shaft rotating support is on the cylinder body axial end cap, and master gear is as internal rotor, drive shaft axis overlaps with internal gear central axis (being the cylinder body central axis), and there is throw of eccentric F in this axis and the master gear round end center of circle; Internal gear-servo-actuated planetary pinion-master gear-servo-actuated planetary pinion-internal gear constitutes circulation engagement chain, formation-bar circulation engagement chain between adjacent two planetary pinions, and engagement chain number is identical with the planet number; Open the beginning with the planetary any rotational position of arbitrary servo-actuated and equal the arc length or the number of teeth that it rolls across or meshed on master gear in the fricton-tight arc length that rolls across or meshed or the number of teeth on the internal gear; The master gear number of teeth and internal gear gear ratio scope are 1: 4-4: 5; Volume-variation is because the round end portion of master gear is passing in and out between the adjacent servo-actuated planetary pinion of two-phase arbitrarily, the volume that the engagement chain is surrounded produces the mutual conversion cycles of size and realizes transfiguration, working medium is imported and exported and can be located at flexibly radially, (flow), end face (flow) on the axle, wherein, valve plate distribution can be on the transmission shaft of master gear one or both sides fixing coaxial flow disk and end face realize flow (being used for motor) more.

The utility model is mainly formed serial variable-displacement equipment by internal gear, master gear and servo-actuated planetary pinion three operative gear members, meshing relation between three operative gear members has constituted multiple-sealed line of contact, its effect equals to have increased multiple-sealed, and multiple-sealed engages and seals line meshes under pressure state all the time, therefore the utility model radial seal is reliable, is not afraid of wearing and tearing.Structure of the present utility model makes the variable spaces of volume increase, and the variable volume number increases, and variable volume and overall volume ratio have the advantage that volume is little, discharge capacity is big, simple and compact for structure greater than 1.The utility model constitutes a plurality of variable volume chambers, and each variable volume chamber is worked simultaneously, but the phase place difference has the transfiguration characteristics of blade variable-displacement equipment, so exportable regime flow of the utility model and pressure.The utility model is simple in structure, and is not high to requirement on machining accuracy, is easy to make, and selection is extensive, metal and nonmetal all can, be suitable for various working medium.Structure of the present utility model can be suitable for various industries, can be used for making various motors, pump and motor, and unique advantage is arranged.For example, be used for motor, can realize not establishing the inlet and outlet door system, make the big discharge capacity of motor, high pulling torque, no dead point, small volume can simply lubricate or unlubricated.

Accompanying drawing 1 is the utility model structural representation, and among the figure, master gear is positive circular (i.e. round end);

Accompanying drawing 2 is a structural representation behind the accompanying drawing 1 master gear half-twist angle;

Accompanying drawing 3 is the utility model structural representation, and among the figure, master gear is two round ends;

Accompanying drawing 4 is a structural representation behind the accompanying drawing 3 master gear half-twist angles.

Accompanying drawing 5 is the utility model example structure schematic representation.

Embodiment one

As shown in Figure 1, the master gear pitch diameter is D1, and driving gear is positive circular, and the servo-actuated planetary pinion is 3, and servo-actuated planetary pinion pitch diameter is D2, the oval internal gear pitch length of class axial length A, the long B of minor axis, and geometric relationship is as follows between throw of eccentric F:

A＝D1+2F+2D2，B≥D1+D2。

Embodiment two

As shown in Figure 3, master gear is two round ends, and the servo-actuated planetary pinion is 4, and the master gear pitch diameter is D1, and servo-actuated planetary pinion pitch diameter is D2, the oval internal gear pitch length of class axial length A, the long B of minor axis, and geometric relationship is as follows between throw of eccentric F:

A＝D1+2F+2D2，B≥D1+2F。

Embodiment three

As shown in Figure 5, internal gear places in the disc housing, in the end face or the footpath of housing the working medium import and export is set upwards.

Claims (4)

1, all-teeth positive-displacement apparatus, comprise that one has the cylinder body of internal gear and master gear and the servo-actuated planetary pinion in the cylinder body, it is characterized in that internal gear is the class ellipse, comprise ellipse, the minor axis limit is recessed, protruding, flat symmetry shape long-round-shape, cylinder body pack into servo-actuated planetary pinion and master gear with internal gear engagement, master gear is described with the notion of round end gear, when the round end of master gear was one, when promptly master gear was just circular, servo-actuated planetary pinion number was three, when the round end of master gear is N, be that master gear is a petal-shaped, servo-actuated planet tooth number should be M, and its number relation should satisfy N-M=2, N in the formula 〉=3, M 〉=1, N, M is a positive integer, is fixed with transmission shaft on the master gear, the transmission shaft rotating support is on the cylinder body axial end cap, master gear is as internal rotor, and drive shaft axis and internal gear central axis are the cylinder body central axes, and there is throw of eccentric F in this axis and the master gear round end center of circle; Internal gear-servo-actuated planetary pinion-master gear-servo-actuated planetary pinion-internal gear constitutes circulation engagement chain, constitutes a circulation engagement chain between adjacent two planetary pinions, and engagement chain number is identical with the planet number; Open the beginning with the planetary any rotational position of arbitrary servo-actuated and equal the arc length or the number of teeth that it rolls across or meshed on master gear in the fricton-tight arc length that rolls across or meshed or the number of teeth on the internal gear; The master gear number of teeth and internal gear gear ratio scope are 1: 4-4: 5; Volume-variation is that the volume that the engagement chain is surrounded produces the mutual conversion cycles of size and realizes transfiguration because the round end portion of master gear is passing in and out between the adjacent servo-actuated planetary pinion of any two-phase; Working medium is imported and exported and to be located at radially, on the axle, end face, wherein, valve plate distribution can be on the transmission shaft of master gear one or both sides fixing coaxial flow disk and end face realization flow.

2, according to the said all-teeth positive-displacement apparatus of claim 1, it is characterized in that driving tooth is positive circle, the servo-actuated planetary pinion is 3, should satisfy example relation down between the shape of the oval internal gear of master gear pitch diameter and servo-actuated planetary pinion pitch diameter and class:

A＝D1+2F+2D2，B≥D1+D2

In the formula: A is long for the class transverse, and B is long for the class ellipse short shaft, and D1 is the master gear pitch diameter, and D2 is a servo-actuated planetary pinion pitch diameter, and F is drive shaft axis and master gear round end center of circle throw of eccentric.

3, according to the said all-teeth positive-displacement apparatus of claim 1, it is characterized in that master gear is two round ends, the servo-actuated planetary pinion is 4, should satisfy example relation down between the shape of the oval internal gear of master gear pitch diameter and servo-actuated planetary pinion pitch diameter and class:

A＝D1+2F+2D2，B≥D1+2F

In the formula: A is long for the class transverse, and B is long for the class ellipse short shaft, and D1 is the master gear pitch diameter, and D2 is a servo-actuated planetary pinion pitch diameter, and F is drive shaft axis and master gear round end center of circle throw of eccentric.

4, according to the said all-teeth positive-displacement apparatus of claim 1, it is characterized in that cylinder body places a disc housing, in the end face or the footpath of housing the working medium import and export are set upwards.

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