CN102606245A

CN102606245A - Cam with changeable circle diameter

Info

Publication number: CN102606245A
Application number: CN2012100734398A
Authority: CN
Inventors: 郑学明
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-17
Filing date: 2012-03-17
Publication date: 2012-07-25

Abstract

The invention discloses a cam with a changeable circle diameter. The cam is characterized in that the cam is divided into two half circles, one half circle is fixed, the other half circle is movable, a centrifugal controller and a cold-hot lifting-contracting machine are arranged on the fixed half-circle cam and a cam shaft, the centrifugal force is used for pushing and pressing a movable clamping sheet and contradicts the force of the cold-hot lifting-contracting machine, one end of the movable clamping sheet is thick and the other end of the movable clamping sheet is thin, the movable clamping sheet is in closed openings of the two half-circle cams, the two half-circle closed openings are enlarged when the movable clamping sheet is pushed and pressed deeply, when the closed openings are enlarged, the circle diameter of the cam is enlarged, an oil supply angle can be in advance due to the enlarged cam, when the rotation speed of a diesel engine is high, the push force of the centrifugal controller is large, the oil supply angle is in advance, and when the temperature of a diesel engine body rises, the lifting force of the cold-hot lifting-contracting machine is increased and contradicts the pushing force of the centrifugal controller, so that the force of the centrifugal controller for pushing the movable clamping sheet is reduced, and the diesel oil supply angle of the diesel angle can be changed along with the change of the rotation speed and the temperature.

Description

Can become the circular diameter cam

Technical field:

The present invention relates to a kind of fuel cam of diesel engine, particularly a kind ofly can control the cam that supplies the diesel oil angle automatically, can make the diesel oil of supply follow the crankshaft of diesel engine rotating speed changes the angle of confession diesel oil with body temperature cam.

Background technique:

The cam of existing ordinary diesel oil is when promoting diesel pump, and angle is fixed, and can only when pulling down the diesel pump assembly, could adjust oil supply angle once more, is to enclose boss with the circle of taking turns, and promotes oil pump feed.

Because the oil supply angle of existing ordinary diesel oil machine is constant when rotating; Change because of rotating speed during the piston gas-pressing of cylinder and the change of wall temperature and nature to variation; Make the isogonal diesel engine of fuel feeding not reach the regulation spontaneous combustion position burning that needs; And shaft horsepower does not reach maximum, and oil plant is caused waste, adopts the cam of following rotating speed and temperature change oil supply angle to make shaft horsepower become big.

Summary of the invention:

The purpose of this invention is to provide a kind of diesel oil function and become the circular diameter cam, cam is divided into two semicircles, a semicircle is to be fixed on the camshaft; Gu on the semicircle stationary cam on the axle, pacify qcr controller, half the flexible moving cam is clamped with the groove of opening on the fixing semicircle cam, and with the pivot pin string toward in the groove of opening; Make movable semicircle cam that displacement distance in a small amount can only be arranged; And in heal up of two semicircle cams, have the inclined-plane raised line, when camshaft rotates on the qcr controller, beat by centrifugal force and open; Beat fixing mobile card passing and drive; By as the place that heals up that moves card and two semicircle cams the inclined-plane is all arranged, when mobile card goed deep into, the entering distance of healing up of two semicircle cams more for a long time was big more; Healing up, the circular diameter of cam also becomes greatly when becoming big, makes the oil pump that is promoted by cam advance to the fuel feeding position.The cold and hot reduction device of when temperature raises, pacifying on the cam spindle nose promotes spring and resists centrifugal force, and centrifugal force is diminished.

It is following that the present invention can become the structure of circular diameter cam:

Cam is divided into two semicircles, and fixedly the semicircle cam is solid on camshaft, fixedly is equipped with 4 on the semicircle cam and beats the axle bed post, and every second is beaten and pressed from both sides one in work in the gap of axle bed post and beat; And stay in two with an axle string and beat on the axle bed post, having two and beat, two strings are toward the axles of beating, and each beats also intrinsic one group of wooden fork; The cam microcephaly here beat also intrinsic mobile card, mobile card be a curved inclined-plane and one approach one thick, have hollow axis hole on the cam spindle nose, hollow shaft is pacified in the hollow axis hole; The hollow shaft inner bottom part has aperture, and aperture is opened downwards, on the hollow shaft and have two grooves, makes the epimere of hollow shaft be divided into two semicircular cylinders; Be with the lid cover on the hollow shaft top, lid cover and hollow shaft have the hole, have spiral chute, the hole that the hole of opening on the hollow shaft puts less than lid in the hole, hole that lid puts out; Seal in hole internal fixation lid cover and hollow shaft with screw, have the lattice plate in vain in the lid cover, empty dress heat absorption swelling liquid in the lattice plate, lattice plate center has aperture; Seal in pipe in the aperture, Guan Ertou is logical, and piston is arranged in the pipe, and following this head of Guan Zaige plate has two grooves; Following that makes pipe becomes two semicircle pipes, piston card post of horizontal string on following, and the card post can move up and down in two grooves of Guan Shangkai, and the card column length is in the pipe circular diameter; Press below the card post and make big spring, big spring entangles pipe, and by the heat absorption swelling liquid, the heat absorption back gets into pipe and promotes piston; Card post on the piston pushes big spring downwards according to two grooves of Guan Shangkai, and following is pressed in big spring on the aperture wall mouth in the hollow shaft, in the aperture in the hollow shaft little spring is housed; The little spring epimere is in big spring, and the higher authorities of little spring withstand following of pipe on the lattice plate, the intrinsic horizontal sleeve of following of little spring; String is made the card post in the horizontal sleeve, and the card post is to seal in and be longer than the hollow shaft circular diameter by two grooves opening on the hollow shaft, is to move up by dialling wooden fork push card post.Fixedly the microcephaly's of semicircle cam circle is placed and is had a groove, supplies the protruding bridge of peace activity semicircle cam, one side the major part circle enclose have a big groove; Supplying peace activity semicircle cam, supply respectively to have an axis hole on the limit face of two limit cell walls of peace activity semicircle cam, is to be sealed in and go here and there the hole of opening on the big wall in front of movable semicircle cam by the hole with axle; One big one of axle has annular groove, is inserted in groove on the axle with snap ring and blocks axle and move back, and fixedly has camshaft hole on the semicircle cam; Also have semicircle groove on the movable semicircle cam and supply the camshaft string to cross usefulness, two semicircle cams to heal up at protruding this head also be that the microcephaly has located inclined-plane raised line and short raised line, short raised line is higher than the inclined-plane raised line; Lean on inclined convex the short raised line inclined-plane here, protruding bridge is leaned on the short raised line limit of movable semicircle cam, and fixedly the short raised line of semicircle cam leans on groove on one side; Protruding bridge is at circle surrounding edge place, and groove supplies to adorn protruding bridge usefulness, and protruding bridge is that the movable pulley on the oil feed pump assembly is worked as the bridge mistake; Thick less than the movable pulley on the oil pump assy of protruding bridge wide; The groove that protruding bridge is used can not put into movable pulley, and the short raised line folder of two semicircle cams makes to move card, and the major part of two semicircle cams heals up and locates to have the hole of peace spring; Open half the dark, the microcephaly that the spring in the hole is used for two the semicircle cams return that heals up.Bent axle and the incorgruous rotation of cam, beat axle bed post hole and open at another side.When opening spiral chute and back down healing up of two semicircle cams, be that the microcephaly of the fixedly semicircle cam place that heals up opens large and small hole, macropore dress peace gear with bore; Aperture is the peace screw rod in macropore; Tooth punching comes driven gear to rotate on the mobile card, and promotion activity semicircle cam during the gear rotation, movable semicircle cam heal up with the fixing microcephaly who goes here and there the boss wheel and locate the slope-less raised line; Fixedly there is not short raised line on the semicircle cam; Short raised line on the movable semicircle cam changes two limits into has the inclined-plane, and the circular diameter face of gear top this face of movable semicircle cam has a short raised line, uses when having supplied to advise.Bore is not opened the spiral fluted gear; Moving semicircle cam the circular diameter face here of taking over a job is that spiral is strong, and a short raised line is arranged in the above, and the short raised line on the movable semicircle cam is to change two limits into the inclined-plane is arranged; Connect inclined-plane raised line slope-less here, fixedly slope-less raised line and short raised line on the semicircle cam.Little spring can change big spring into and be enclosed within on the hollow shaft, and following is pressed in the screw that the higher authorities' top cover puts on the card post.

Theoretical foundation of the present invention is: utilize centrifugal force to make the diameter of cam become big; Turn large diameter cam when pushing the movable pulley of oil pump assy, can arrive the fuel feeding position, play fuel feeding in advance because of diameter becomes the displacement distance that make oil pump greatly in advance with high spot; When the thrust of heat absorption swelling liquid is mutually anti-with centrifugal force; Centrifugal force is diminished, and make the cam circular diameter that diminishes again, the fuel feeding advancement amount is tailed off.

During work, anti-mutually with the power of the submissile before this and mobile card of drive of centrifugal power of beating when cam rotation, just anti-mutually again when mobile card leaves short raised line with the power of big spring; Also being card post when rising to following of big spring, at this moment is the beginning that the starting diesel engine runs well, and also is that the rotating speed of diesel engine is when surpassing per minute 300 and changeing; Normal need oil supply angle when being higher than per minute 1500 and changeing because of moving the oil supply angle of card in short raised line the time again because of the heat absorption expander, can make big spring power become big when high-temperature; Can push back in the short raised line because of the mobile card that spring force becomes greatly when supporting rotating speed, therefore the effect thrust retaining of big spring is moved apart short raised line at mobile card and worked afterwards, play the protection starting arrangement; When temperature raises; The liquid of heat absorption expander gets into and promotes piston in the pipe, and the card post on the piston also compresses big spring simultaneously, makes spring force become big; Spring force is the returning place force of beating; The active force of beating is diminished, make mobile card also follow retraction, and change oil supply angle once more up to balance.Advantage of the present invention and effect:

1, the good fuel-economizing of fuel-economizing performance is many;

2, changing the diesel engine scale of construction makes simple and safe durable less;

The maximum speed that 3, can improve the ordinary diesel oil machine makes gas-oil ratio than balance;

4, can be than the low cost of manufacture 20% of the ordinary diesel oil machine of identical horsepower.

Description of drawings:

Fig. 1 is that the present invention can become the circular diameter cam;

Fig. 2 is a cam peace centrifuge face;

Fig. 3 is movable semicircle cam circle diametral plane.

Figure number sign: (1) camshaft; (2) fixing semicircle cam; (3) movable semicircle cam; (4) cell wall; (5) beat the axle bed post; (6) axle; (7) hole; (8) dial wooden fork; (9) lid cover; (10) screw; (11) card post; (12) groove; (13) move card; (14) beat; (15) hollow shaft; (16) beat axle bed post hole; (17) hollow axis hole; (18) joint gap; (19) microcephaly; (20) major part; (21) semicircle groove; (22) inclined-plane raised line; (23) lack raised line; (24) protruding bridge; (25) groove.

Embodiment:

As shown in the figure, be fixed on the camshaft (1) with the hole (7) of opening on the fixing semicircle cam (2), fixedly open on the semicircle cam (2) and beat axle bed post hole (16) and hole (7); Open hollow axis hole (17) on the head of camshaft (1), axle bed post (5) is fixedly beaten in the axle bed hole (16) of beating of fixedly opening on the semicircle cam (2), beats axle bed post (5) and goes up perforate (7); Peace axle (6) in the hole (7), axle (6) go here and theres and are beaten the hole of opening on (14) and two and beat axle bed post (5), and spools (6) one greatly; An open loop groove is gone in the annular groove with the ring cutting ferrule, beats (14) and goes up intrinsic one group of wooden fork (8); Dial wooden fork (8) cover wooden fork hollow shaft (15) and connect and push away card post (11), block post (11) and went here and there the horizontal cover of little spring of hollow shaft (15) and inner face, in the big spring of little spring in hollow shaft (15); Hollow shaft (15) is gone up fluting (12) top and is gone up with lid cover (9) and entangle, and lid cover (9) is gone up perforate (7) with hollow shaft (15) and sealed in fixingly with screw (10), covers and overlaps (9) interior lattice plate admittedly; Lattice plate center has the hole, and the hole seals in pipe, and Guan Ertou communicates; Have groove on piston being arranged in the pipe and managing, following horizontal string card post of piston, the card post moves according to the groove of Guan Shangkai; The card post is pressed on the big spring top, and following is pressed in big spring on the little hole wall in the hollow shaft (15), little spring following in hollow shaft (15) in following the aperture; The higher authorities connect following of the interior pipe of top lattice plate hole, and big spring entangles the hypomere of pipe, in the lattice plate upper strata in the lid cover (9) the heat absorption swelling liquid are arranged; Intrinsic mobile card (13) is gone up in microcephaly (19) on fixing semicircle cam (2) beat (14), fixedly has groove (25) on the semicircle cam (2), and groove is clamped in (25); The major part (20) of energy semicircle cam (3) has hole (7) on major part (20) and the cell wall (4), goes here and there the hole of opening on cell wall (4) and the major part (20) with axle (6); Have semicircle groove (21) in the middle of the circular diameter face of energy semicircle cam (3), this radius of microcephaly (19) has inclined-plane raised line (22), short raised line (23) and protruding bridge (24); Fixedly the circular diameter face microcephaly (19) of semicircle cam (2) has inclined-plane raised line (22), and short raised line (23) and groove, groove supply to adorn protruding bridge (24) and use; Fixedly the circular diameter of semicircle cam (2) and movable semicircle cam (3) the interior major part (20) that heals up has hole (7), peace spring in hole (7), and two short raised lines (23) folder is made mobile card (13); By as fixedly healing up of semicircle cam (2) and movable semicircle cam (3) have a circle radius inclined-plane raised line (22) to be arranged and lack raised line (23) in being, make the outside of locating that heals up leave joint gap (18).

Earlier that the spring in the major part that heals up (20) of cam circle diameter is good and sound during installation, with movable semicircle cam (3) groove (25) internal fixation of packing into, again the cam that gets togather is inserted on the camshaft (1) again; Set up hollow shaft (15) again to camshaft (1) head; Peace is beaten (14) to original solid dead beating on the axle bed post (5) again, pacifies little spring again and goes in the aperture of hollow shaft (15), and string is gone up card post (11) again; Pacify big spring again and go in the hollow shaft (15), the lid cover (9) (cold and hot reduction device) that back peace Guyuan installs earlier.

Claims

1. can become the circular diameter cam, it is characterized in that: comprise camshaft (1), fixing semicircle cam (2), movable semicircle cam (3); Beat axle bed post (5), axle (6), hole (7), lid cover (9); Card post (11), groove (12) moves card (13); Beat (14), hollow shaft formations such as (15) can become the hole (7) of opening on the fixedly semicircle cam (2) of circular diameter cam to entangle camshaft (1); Fixedly have on the semicircle cam (2) and beat column base hole (16) and hole (7), open sky axis hole (17) on the head of camshaft (1), axle bed post (5) is fixedly beaten in the axle bed post hole (16) of beating of fixedly opening on the semicircle cam (2); Beat axle bed post (5) and go up perforate (7), peace axle (6) in hole (7), axle (6) were gone here and there and are beaten (14) and two and beat axle bed post (5); (6) big open loop grooves of axle are gone in the annular groove with the ring cutting ferrule, beat (14) and go up intrinsic one group of wooden fork (8); Dial wooden fork (8) cover wooden fork and live hollow shaft (15) and connect to push away card post (11), card post (11) was gone here and there the horizontal cover on the little spring in the hollow shaft (15), microcephaly (19) this side on fixing semicircle cam (2) beat (14) upward intrinsic mobile card (13).

2. according to claim 1ly can become the circular diameter cam, it is characterized in that: hollow shaft (15) is gone up fluting (12), overlaps (9) and entangles with covering on the top on; Lid cover (9) is gone up perforate (7) with hollow shaft (15) and is sealed in fixingly with screw (10), covers and overlaps intrinsic lattice plate in (9), and lattice plate center has the hole; Seal in pipe in the hole, Guan Ertou communicates, and is with piston in the pipe and has two grooves with the pipe hypomere; Following horizontal string card post of piston, the card post moves according to the groove of Guan Shangkai; The card post is pressed on the big spring top; Following is pressed in big spring on the aperture of opening in the hollow shaft (15); Little spring following in the aperture of hollow shaft (15) in following; Little spring the higher authorities connect following of the pipe that seals in the lattice plate hole of top, and big spring entangles pipe and little spring, in the lattice plate upper strata in the lid cover (9) the heat absorption swelling liquid is arranged.

3. can become the circular diameter cam according to claims 1-2 is described; It is characterized in that: fixedly have groove (25) on the semicircle cam (2), clamp the major part (20) of movable semicircle cam (3) in the groove (25), have hole (7) on major part (20) and the cell wall (4); Went here and there the hole (7) of opening on the major part (20) of cell wall (4) and movable semicircle cam (3) with axle (6); Have semicircle groove (21) in the middle of the circular diameter face of movable semicircle cam (3), this radius of microcephaly (19) has inclined-plane raised line (22), short raised line (23) and protruding bridge (24); Fixedly the circular diameter microcephaly (19) of semicircle cam (2) has inclined-plane raised line (22); Short raised line (23) and groove, groove supplies to adorn protruding bridge (24) usefulness, fixedly the circular diameter of semicircle cam (2) and movable semicircle cam (3) heal up major part (20) this have hole (7); Peace spring in the hole (7), two short raised lines (23) folder makes to move card (13).

4. can become the circular diameter cam according to claims 1-3 is described; It is characterized in that: when opening spiral chute and back down healing up of two semicircle cams, be that the microcephaly (19) of fixedly semicircle cam (2) place that heals up opens large and small hole, macropore dress peace gear with bore; Aperture is the peace screw rod in macropore; Move card (13) and go up tooth punching and come driven gear to rotate, promotion activity semicircle cam (3) when gear rotates, movable semicircle cam (3) is located slope-less raised line (22) with fixing healing up of semicircle cam (2); Fixedly semicircle cam (2) is gone up does not have short raised line (23); Movable semicircle has the short raised line (23) of cam (3) to change two limits into has the inclined-plane, and gear circular diameter face leans on movable semicircle cam (3) face that a radius inclined-plane raised line is arranged, and uses when supplying starting.

5. can become the circular diameter cam according to claim 1-4 is described; It is characterized in that: when bore was not opened spiral chute, gear is taken over a job and moved semicircle cam (3) face circular diameter was that spiral is strong, and has a radius raised line to be arranged in the above; Short raised line (23) on the movable semicircle cam changes inclined-plane, two limits into; Short raised line (23) connects inclined convex (22) slope-less here, and fixedly semicircle cam (2) is gone up slope-less raised line (22) and short raised line (23), the fixedly peace of the aperture in semicircle cam (2) diametral plane axle.

6. according to claim 1ly can become the circular diameter cam; It is characterized in that: the little spring in the aperture in the hollow shaft (15) can change big spring into and be to change into entangling hollow shaft (15); Spring the higher authorities withstand and add long spiro nail (10) on the lid cover (9), and following is pressed on the card post (11).