CN101711306A

CN101711306A - Hydraulic spring drive apparatus

Info

Publication number: CN101711306A
Application number: CN200880004194A
Authority: CN
Inventors: 克洛伊斯·M·哈伦
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-06
Filing date: 2008-02-06
Publication date: 2010-05-19
Also published as: EP2129880A1; WO2008112358A1; CA2677149A1; JP2010518310A; RU2009133347A; US20090205594A1; KR20090117795A

Abstract

Hydraulic spring drive apparatus comprising: a rotatable cam shaft having fixed thereon a number of cams; a number of rocker arms, one following each cam, each pivotally attached at one end to a pressure bar and at another to an expansible, compressible connecting means in turn connected to a crank portion of a crank shaft. The cams, crank shaft, and expansible compressible connecting means are arranged so that a number of connecting means expand against the compression of one connecting means. The pressure bar is movable to position the rocker arms for a selected degree of connecting means compression.

Description

Hydraulic spring drive apparatus

The cross reference of related application

The application requires the preference of the U.S. Provisional Application 60/899,924 of submission on February 6th, 2007, and its content all is incorporated into this paper in the mode of reference.

Technical field

The present invention relates to machine field, especially a kind of hydraulically powered spring drive motor.

Summary of the invention

According to the present invention, a kind of hydraulic spring drive apparatus is provided, wherein transmit the independent spring power that is used to rotate constantly by operating a plurality of extensible, compressible connection sets, so that in arbitrary preset time, the connection set of stretching, extension is more than compressed connection set.

As a preferred embodiment of this device, rotatable camshaft along its length axially spaced-apart a plurality of cams that are used for rotating with it are installed.Each cam all has an edge, and the distance between this edge and the cam rotating center changes between ultimate range and minimum range.A plurality of rocking arms, each is all following a cam, and in a precalculated position, rocking arm one end and this device are pivotally connected, and support the connection set of extensible compression in end opposite.Bent axle has the eccentric mechanism portion that links to each other with each connection set of being used for, and the rotation of camshaft and the to-and-fro motion of connection set can drive crankshaft rotating.Each cam face is designed to, the ultimate range of its edge extends through the sub-fraction (about 90 degree) in its 360 angle of swing, minimum range extends through the major part (about 135 degree) in the angle of swing, when cam rotates, increase sharply to ultimate range from minimum range, and drop to minimum range gradually from ultimate range.This structure of cam edge makes a certain connection set with respect to the stretching, extension of other a plurality of connection sets and compress.Can on this camshaft, connect an oil hydraulic pump, thereby be used for rotating the running of auxiliary throttle system with this camshaft.This throttle system can be connected to the pressure bar of each cam rocker arm by replacement, thereby is used to control the equilibrium position of rocking arm.By adjusting the degree of compression and the range of extension of each connection set of rocking arm may command.

Description of drawings

Fig. 1 is the side sectional view of apparatus of the present invention, for the sake of clarity, has removed the part parts.

Fig. 2 is the end view of device shown in Figure 1, for the sake of clarity, has removed the part parts.

Fig. 3 is the sectional view of power unit assembly shown in Figure 2.

Embodiment

With reference to Fig. 1 and 2, this device is to be contained in the rectangular case 4, and housing 4 supports bent axle 6, camshaft 8 and rocker arm assembly 10.Oil hydraulic pump 12 and air throttle component 14 are installed on this housing.

Axially pass housing 4 first halves and via fore bearing 16 and rear bearing 18 bent axle 6 is installed, bent axle 6 comprises axially the evenly isolated eccentric mechanism part 20 that is used for each cam and connection set, has 8 crank sections 20 in a preferred embodiment.Each crank section 20 comprises a pair of axialy offset member and a cross member 22, and wherein cross member 22 rotates according to the formed circle of a certain given diameter Dcr around the running shaft 24 of bent axle.

Camshaft 8 is supported on fore bearing 26 and the rear bearing 28, and supports 8 cams 30 along the axially even compartment of terrain of its length, and each cam 30 is relative with each crank portion 20.This camshaft front end stops with belt wheel 32, and the rear end stops with flywheel 34.This camshaft can the axle journal place support with a plurality of cams between engage, thereby cam is rotated with it.

Cam 30 is circumferentially installed each other with departing from, thereby makes each cam and its adjacent backward cam in succession spend skew according to 360 degree divided by the angle of cam number or with 45.Similarly, each crank portion 20 with depart from 45 degree to adjacent crank portion thereafter so that as shown in Figure 2, relatively be connected to a crank portion with 180 cams of representing, 180 parts of this crank portion engage with a rocking arm.Therefore the cam of 36 leading 45 degree relatively is connected to a crank portion 225 in the direction of arrows, or the like.One timing gear 38 respectively with this bent axle on gear 40 and the gear 42 on the camshaft engage, form above-mentioned predetermined relationship to keep this cam and crank portion.

Each cam 30 has the identical correction disc-shape of revising edge surface 41 that has as shown in Figure 2.Each cam can be divided into eight sections, 0-360.The edge surface that comprises the section of 135-225 degree circular arc is positioned at apart from cam rotating shaft 44 the most nearby.The variance ratio of

section

270 and 225 formation an angle of 90 degrees and the edge 41 of cam 30 are outwardly-bent slightly.From 270 ° to section 0, the edge keep with spool between ultimate range, be about the circle of Dcr along its diameter that draws.From section 0, this cam is near the minimum range the section of being back to 90 little by little.

With reference to the accompanying drawings 2, rocker arm assembly 10 comprises the pressure bar 46 of axial elongation, supports this pressure bar (Fig. 2) via three axially spaced upwardly extending bar 48-52 of portion.Bar portion 48,50,52 is assemblied in the

pipe portion

49,51,53 in the housing 4 slidably.Eight Rocker arm 5s 4 pivotally are connected to pressure bar 46, so that approximate horizontal laterally extends, thereby move along the pivotal orientation that is parallel to of arrow 56 indications.Each Rocker arm 54 operationally engagement cam and with cam 30 synergy movements, and be connected with power lever assembly 58.Each Rocker arm 54 is of similar shape and can comprises that one has the lower surface of crooked protuberance 60, and this bending protuberance 60 is supported on the cam 30 and follows cam by aforesaid edge variation and move.Being bent downwardly slightly of rocking arm to outside 61, thus make power lever assembly 58 engage with rocking arm in the place of downward bias from protuberance 60.Extending to outside 61 of Rocker arm 54 passes in chamber portion 62, thereby receives the axle 64 of power lever assembly 58 slidably.Pin 66 supports and can engage drivingly the spring cup pivot 68 of power lever assembly pivotally.

Power lever assembly 58 is passed to bent axle 20 corresponding crank portion 22 (Fig. 1) with the to-and-fro motion of its Rocker arm 5 that is associated 4, and replenishes motion by the stretching, extension of spring element 72.

With reference to figure 3, each power unit assembly 58 comprises top fitting 70, helical spring 72, axle 64 and spring cup pivot 68.This top fitting 70 rotatably is fixed to its cross member that is associated 22 that is positioned on the bent axle 20, and ends at edge portion downwards, and described top fitting comprises spring receiving hole 69 and is used to receive two connecting rod holes 71 of connecting rod 73.Helical spring 72 also engages with spring cup 68 downwards round axle 64.Axle 64 is fixed on the ozzle 70 and extends to the spring cup 68 that is supported on the Rocker arm 54.This spring cup 68 is supported on the upper surface of Rocker arm 54 pivotally, and comprises the hole that is used to receive helical spring 72 bottom spring coils.So, power unit assembly 58 just provides compressible extensile connection set, and its stretching, extension and compression by helical spring 72 is converted into rotatablely moving of bent axle 20 with Rocker arm 54 with the reciprocal pivotal movement that cam 30 produces.When spring cup 68 is supported on the Rocker arm 4 and along axle 64 towards ozzle 70 when moving, helical spring 72 takes place to stretch and compression.

Relation between each crank portion, cam and the spring is as shown in the table:

Constituent element	Bent axle	Cam	Spring tension	Linkage unit number
Constituent element	Bent axle	Cam	Spring tension	Linkage unit number	??0	Farthest	Maximum	Do not work	??1

Constituent element	Bent axle	Cam	Spring tension	Linkage unit number
Constituent element	Bent axle	Cam	Spring tension	Linkage unit number	??180	Farthest	Middle	Do not work	??2
??270	Recently	??0	Compression	??3	??180	Farthest	Middle	Do not work	??2
??270	Recently	??0	Compression	??3	??90	Farthest	??0	Do not work	??4
??315	Recently	Minimum	50% compression	??5	??90	Farthest	??0	Do not work	??4
??315	Recently	Minimum	50% compression	??5	??135	Farthest	Middle	Do not work	??6
??45	??0	Maximum	Do not work	??7	??135	Farthest	Middle	Do not work	??6
??45	??0	Maximum	Do not work	??7	??225	??0	??0	50% compression	??8

Above crank position is, in the complete rotary course, and the crank position that each crank section passes through, and the residing position of each parts of given time.

With reference to figure 1, oil hydraulic pump 12 is to be used for auxiliary air throttle component 14.This air throttle component 14 comprises two hydraulic fluid cisterns, a power-assisted cistern 80 and a main cistern 82.This main cistern 82 is main cisterns, and it is to controlling from the hydraulic pressure amount that pump 78 is sent to the

pipe portion

49,51,53 of rocker arm assembly 58 by circuit 84.Be subjected to the power supply 74 of switch 76 controls to drive electric pump 78, electric pump 78 increases the pressure in the main cistern 82.Pressure in the

pipe portion

49,51,53 promotes rocking lever 48,50,52 downwards, thereby the equilibrium position of rocking arm is pivoted towards bent axle 20.Spring 86 in each

pipe portion

49,51,53 helps barre 48,50,52 to be pushed to the equilibrium position downwards.Increased pressure in the

pipe portion

49,51,53 by the sliding piston 87 in the main cistern 82.The power that pump 78 produces begins and impels piston 87 to produce motion, thereby reduces the cistern area, increases the pressure in the

pipe portion

49,51,53 simultaneously.But piston 87 is by axle 88 to-and-fro motion, and this 88 is connected with second piston 90 in the power-assisted cistern 90.This second piston 90 also travels forward and increases pressure in the

pipe portion

49,51,53 with displacement first piston 87.Pressure from oil hydraulic pump 12 is sent to the first chamber portion 96 of power-assisted cistern 80 by

circuit

92,94, and the second chamber portion 98 that includes piston 90.102 pairs of slide plates are controlled by first the mobile of chamber portion.This slide plate 102 is connected with piston 104 in the first chamber portion 96, and is subjected to the control of bar 106.The fluid that the motion of bar 106 will increase pressurization flow to the second chamber portion 98, thereby makes piston 90 travel forward.From belt 108 driven pumps 12 of camshaft 8, make the motor speed that increases that the increased pressure that is used for the movement pressure rod is provided.102 pairs of plates are sent to the pressure size of piston 90 and control.In order to obtain maximum power output from this device, along with the increase of camshaft speed, the pressure of increase is sent to pressure bar.Thereby moving of plate 104 can be carried out the pressure that arrival piston 90 is cut off in throttling to this pressure.

This device also can be wrapped oil system.Transport pipe 112 links to each other with each coupling shaft 64.Each 64 has oily passage, and this passage passes two holes 114,116 that the whole length in a center extends to ozzle 70 tops.This transport pipe 112 that is attached at coupling shaft 64 1 ends also is connected with the working connection that is connected to oil pump 118, and wherein said oil pump 118 utilizes gear to be driven by camshaft 8.

When oil was pumped through coupling shaft, the bearing that each bent axle turns was also oiled.It goes back the lubricating screw spring, and prevents its heating and follow the string.This is to enter cistern and realize by ordering about two oilholes 114,116 that oil passes ozzle 70 tops.By forming this cistern by the rubber standoff in the use ozzle 70 and by forming a cistern, wherein rubber standoff is sandwiched on the ozzle of connecting rod, also is clipped on traditional spring cup simultaneously.

Have the hole in this rubber standoff, this hole is located at apart from the position of frame bottom about 2/3, makes oil flow out when helical spring is compressed, and prevents that by such mode rubber standoff from expanding.In expansion stroke, because helical spring is stretched, the oil of cooling is sent back to cistern, thereby makes oil insert cistern and cooling spiral spring.Mode is that main bearing oils like adopting together.All be drilled with oil outlet in each supporting element and be connected with transport pipe respectively.

Under the situation that does not depart from spirit of the present invention, can in design and running, carry out various modification.Therefore, the described preferred structure of the present invention and the method for operation only as preferred embodiment illustrating and illustrating, are to be understood that the present invention is enforceable, yet but are not limited to the content of concrete diagram and description.

Claims

1. high energy efficiency electric system comprises:

Rotatable camshaft;

A plurality of cam members are axially offset from one another along the camshaft length direction, and are fixed to camshaft and are used for its rotation;

Wherein, each cam member all has an edge, and the distance between this edge and the cam member rotating center changes between ultimate range and minimum range;

A plurality of rocking arms, each rocking arm are followed a described cam and are moved, and each rocking arm pivots at first end and is connected to the hydraulic energy input, and is connected to extensible, compressible power unit assembly at second end pivot; With

Bent axle has and is used for the crank portion that links to each other with each power unit assembly, by rotatablely moving and the to-and-fro motion of described power unit assembly of described camshaft, this bent axle is rotatable drivingly masterpiece is used in first or at least one rocking arm on.

2. electric system as claimed in claim 1, the described edge that it is characterized in that each cam member are ultimate range at a distance of camshaft in the rotating ranges of about 90 degree, and are minimum range at a distance of camshaft in the rotating ranges of about 135 degree.

3. electric system as claimed in claim 2 is characterized in that each power unit assembly links to each other with bent axle in an angle of swing of bent axle, and when cam member at a distance of camshaft when being ultimate range, crank portion is rotated away from this cam member.

4. electric system as claimed in claim 1 is characterized in that also comprising the pressure bar that may be operably coupled to each rocking arm first end, and described pressure bar changes with respect to the position of cam member, thereby is used for the compression of control action in described power unit assembly.

5. electric system as claimed in claim 4 is characterized in that described hydraulic energy input comprises the oil hydraulic pump that may be operably coupled to bent axle, makes oil hydraulic pump may be operably coupled to bent axle, in order to the effect hydraulic pressure pressure bar is positioned.

6. electric system as claimed in claim 5 is characterized in that also comprising throttle valve device, and this throttle valve device is used to control flow of pressurized, thus positioning pressure rod changeably.

7. electric system as claimed in claim 5 is characterized in that also comprising the motor-drive pump of effect hydraulic pressure to the pressure bar location.

8. electric system as claimed in claim 1, it is characterized in that this power unit assembly comprises the spring cup pivot, the ozzle that may be operably coupled to this bent axle that may be operably coupled to camshaft, is connected to this ozzle and is contained in the central shaft in the spring cup pivot slidably and is supported on spring in the spring cup pivot, this spring is used for impelling this ozzle to separate with this spring cup pivot at motor operation course.