CN104061043B - Gasoline chain saw - Google Patents
Gasoline chain saw Download PDFInfo
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- CN104061043B CN104061043B CN201410223433.3A CN201410223433A CN104061043B CN 104061043 B CN104061043 B CN 104061043B CN 201410223433 A CN201410223433 A CN 201410223433A CN 104061043 B CN104061043 B CN 104061043B
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Abstract
The invention relates to a gardening tool, in particular to a gasoline chain saw which includes an engine case, wherein a crankcase used for accommodating a crankshaft is arranged at the middle part of the engine case; an air cylinder which is connected with a gasoline engine air intake system is arranged at the upper part of the crankcase; a piston cotter of the air cylinder is connected with the head part of the connecting rod of the crankshaft; a cam cavity used for accommodating a timing gear, a driven gear and a cam, and an oil tank are arranged on the side surface of the crankcase; the cam cavity is communicated with the oil tank through an oil pipe; the shaft end of the crankshaft penetrates through the whole cam cavity; a radial oil receiving hole is formed in the outer surface of a main journal of the crankshaft, and the main journal is arranged in the cam cavity. An oil passage is formed in the crankshaft in the axial direction; one end of the oil passage is communicated with the oil receiving hole, and the other end of the oil passage is formed in the lower part of a connecting journal, and is communicated with the crankcase; an oil pipe used for lubricating a chain saw is communicated with the bottom, close to the cam cavity, of the crankcase. The gasoline chain saw has the benefits that a lubricating oil-way of the gasoline engine and a chain saw lubricating oil-way are well unified, so that the whole gasoline chain saw is compact in structure, and the like.
Description
Technical field
The present invention relates to a kind of garden instrument, especially relate to a kind of gasoline chain saw.
Background technology
Electromotor and the gasoline engine of crankshaft-link rod composition that existing gasoline chain saw is in use internal need to be lubricated, and saw chain is also required to lubrication simultaneously.Existing gasoline chain saw gets rid of oiled-plate method to needing during engine lubrication to install on bent axle or installs on connecting rod and stir spindle and be lubricated bent axle, connecting rod, but this kind of gasoline chain saw not only needs separately to set oil pump, get rid of oiled-plate method and stir spindle increase cost, and lubricant passage way is based on liquid, the structure that lubricating oil flow velocity is slowed down is not possessed on whole lubricant passage way system, causing each parts that the too fast liquid lubricant causing waste and quickly flowing of lubricating oil flow velocity cannot flow through on electromotor and crankshaft-link rod, lubricant effect is poor.Saw chain cannot be lubricated by this kind of oil piping system to electromotor and crankshaft connecting rod lubrication simultaneously, need by another single oil piping system or by artificial drop, saw chain to be lubricated, not only lubricant effect is poor, and needs to set up another oil circuit, the weight of the gasoline chain saw that takes up room, increases, make whole gasoline chain saw not readily portable.
As Chinese patent notification number is: CN201192009Y, a kind of chain saw in bulletin on February 11st, 2009, including housing, the drive mechanism that is contained in described housing, it is connected saw chain with described drive mechanism, this housing is additionally provided with the fuel tank of oil-feed pump fuel feeding in including oil pump, and housing, be additionally provided with the cam interlocked with drive mechanism in housing, oil pump is provided with plunger, and this oil pump is inconsistent with cam by this plunger.Gasoline chain saw not only needs separately to set oil pump, get rid of oiled-plate method and stir spindle increase cost, and lubricant passage way is based on liquid, the structure that lubricating oil flow velocity is slowed down is not possessed on whole lubricant passage way system, causing each parts that the too fast liquid lubricant causing waste and quickly flowing of lubricating oil flow velocity cannot flow through on electromotor and crankshaft-link rod, lubricant effect is poor.Saw chain cannot be lubricated by this kind of oil piping system to electromotor and crankshaft connecting rod lubrication simultaneously, need by another single oil piping system or by artificial drop, saw chain to be lubricated, not only lubricant effect is poor, and needs to set up another oil circuit, the weight of the gasoline chain saw that takes up room, increases, make whole gasoline chain saw not readily portable.
Summary of the invention
The present invention be primarily directed to existing gasoline chain saw need to set up get rid of oiled-plate method and stir spindle electromotor and crankshaft-link rod are lubricated, lubricant passage way with liquid be each parts that master cannot flow through on electromotor and crankshaft-link rod cause that lubricant effect is poor, need individually to set up oil circuit, a weight for the gasoline chain saw that takes up room, increases to saw chain lubrication, the problem such as make whole gasoline chain saw not readily portable, it is provided that one gasoline chain saw.First goal of the invention of the gasoline chain saw of the present invention is: is lubricated saw chain by the lubricating oil centralized recovery after gasoline engine lubricating again, makes lubricating oil atomization expand lube range and improve lubricant effect, achieve gasoline engine lubricating oil circuit and the unification of saw chain lubricant passage way, make the compact conformation of whole gasoline chain saw, reduce the weight of the whole gasoline chain saw that takes up room, alleviates of whole lubricating system；And remove oil pump, get rid of oiled-plate method and stir the parts such as spindle, reduce cost, enhancing lubricant effect.Second goal of the invention of the gasoline chain saw of the present invention is: the atomizing effect, the flow velocity slowing down oil circuit that increase further lubricant passage way, can not only save lubricating oil and can increase lube range and lubricant effect.
nullFirst purpose of the present invention is mainly achieved by following proposal: a kind of gasoline chain saw，Including cabinet、Petrol engine intake system、Guide plate and the saw chain being arranged on guide plate，The crankcase for accommodating bent axle it is provided with in the middle part of cabinet，Crankcase is provided above the cylinder being connected with petrol engine intake system，The piston pin of cylinder is connected with the link rod head of bent axle，The side of crankcase is provided with for accommodating timing gears、Driven gear and the cam chamber of cam and for accommodating the sump of machine oil，The axle head of bent axle runs through cam chamber，Described cam chamber is connected with sump by machine oil pipe，The axle head of bent axle runs through cam chamber，Bent axle is positioned at the trunnion outer surface of cam chamber and is provided with radially receipts oilhole，The axially arranged of bent axle has oil duct，One end of oil duct is conducted with receiving oilhole、The other end is positioned at below link rod head and is conducted with crankcase，Crankcase bottom is communicated with the oil pipe for lubricating saw chain near the one side of cam chamber.Being provided with crankcase in the middle part of cabinet, install bent axle in crankcase, be provided above four-stroke cylinder at crankcase, the piston pin of cylinder is connected with the link rod head of bent axle.Petrol engine intake system is set outside cabinet, petrol engine intake system connects with cylinders, gasoline fuel gas mixed with air enters cylinder by gas handling system makes piston pin descending, fuel gas in compression cylinder when piston pin is up, lighting a fire fuel gas, gas fuel burning expands and makes piston pin descending, finally makes piston pin up in discarded discharge cylinder, complete four strokes, circulate successively.During piston pin uplink and downlink, band dynamic crankshaft rotates, and bent axle rotarily drives saw chain and moves the function realizing chain saw along guide plate.Crankcase side arranges cam chamber, and bent axle runs through cam chamber, is provided with timing gears and the driven gear engaged with timing gears in cam chamber, and cam is fixed on driven gear, and timing gears are fixedly sleeved on the trunnion of bent axle.Bent axle drives timing gears to rotate when rotated, and band moving cam rotates simultaneously, and cam can control air inlet and the aerofluxus of cylinder.Being filled with machine oil in the sump of crankcase side, sump is positioned at below acoustic filter, and sump is connected with cam chamber by machine oil pipe.It is provided with radially receives oilhole owing to bent axle is positioned at the trunnion outer surface of cam chamber, the axially arranged of bent axle has oil duct, oilhole is conducted, the other end is positioned at below link rod head and is conducted with crankcase for one end of oil duct and receipts, and therefore, cam chamber is connected with crankcase.When piston pin is up, in crankcase, space increases and forms negative pressure, also negative pressure is formed in the cam chamber being connected with crankcase, machine oil in sump is inhaled in cam chamber by machine oil pipe, along with the machine oil of entrance is carried out breaing up the machine oil of formation atomization by the rotation of timing gears, driven gear and cam, each components of engine interior such as the trunnion of bent axle, timing gears, driven gear, cam can be lubricated by the machine oil of atomization.Absorption machine oil on engine components becomes liquid, operative liquid machine oil by timing gears, driven gear and the cam in rotating is centrifugal throw away after break up through timing gears, driven gear and cam again, it is achieved standing cloud.Machine oil after atomization is broken up, can be dripped on each parts on the engine after centrifugal, improves lubricant effect.Another part liquid machine oil is wandered on bent axle, is inhaled into oil duct by the receipts oilhole on main bearing journal and enters crankcase along oil duct, and the sidewall of the link rod head of bent axle, cylinder piston pin and cylinder can be lubricated by the machine oil entered in crankcase.When piston pin is descending, space in crankcase reduces, pressure in crankcase increases, the machine oil being inhaled in crankcase is compressed, machine oil after compression is pressed into crankcase bottom in the oil pipe of the one side of cam chamber, and machine oil is discharged along oil pipe, is dropped on guide plate and saw chain, along with the movement of saw chain, whole saw chain is lubricated.In cam chamber, saw chain is lubricated by the machine oil to engine interior component lubrication by the receipts oilhole on bent axle and oil duct centralized recovery again, achieve gasoline engine lubricating oil circuit and the unification of saw chain lubricant passage way, and need not during whole set up oil pump, get rid of oiled-plate method and stir spindle, only the power of engine oil flow need to be provided to make the compact conformation of whole gasoline chain saw, reduce the weight of the whole gasoline chain saw that takes up room, alleviates of whole lubricating system by the pressure differential produced during piston pin uplink and downlink.The rotation rotarily driving timing gears and cam of bent axle, makes machine oil atomization expand lube range and improve lubricant effect.
As preferably, the sidewall of described cam chamber being provided with fuel feed hole, one end of machine oil pipe is connected with fuel feed hole, the other end is provided with machine oil filter core, and machine oil filter core is positioned at inside sump.Machine oil in sump is inhaled in machine oil pipe by the filtration of machine oil filter core, owing to arranging fuel feed hole on the sidewall of cam chamber, therefore, the machine oil in machine oil pipe enters in cam chamber by fuel feed hole, enables machine oil to enter cam chamber from sump by fuel feed hole, machine oil pipe and machine oil filter core.
As preferably, described crankcase bottom is provided with valve near the one side of cam chamber, and one end of oil pipe is connected with valve, the other end is arranged near saw chain.The machine oil reclaimed in crankcase by pressure press-in crankcase bottom produced by descending piston pin, then is entered oil pipe by valve and lubricates saw chain in the valve of the one side of cam chamber.
As preferably, described crankcase outer surface is provided with the mounting groove for fixing oil pipe at oil pipe, and the mounting groove degree of depth is provided with the degree of depth oil storage tank less than mounting groove more than or equal to the diameter of oil pipe, mounting groove near oil pipe opening part.The mounting groove degree of depth that crankcase outer surface is arranged at oil pipe is more than or equal to the diameter of oil pipe, oil pipe can be fixed, mounting groove is provided with the degree of depth oil storage tank less than mounting groove near oil pipe opening part, oil storage tank can not only carry out a certain degree of storage to what the opening of oil pipe was discharged, and oil storage tank can carry out reverse resilience to the machine oil discharged, the machine oil that oil pipe is discharged by the machine oil of resilience realizes collision, buffering, slow down oil pipe and discharge speed and the output of machine oil, while saw chain is lubricated, play fuel-efficient, the effect of fuel-economizing.
As preferably, bottom described cam chamber, it is provided with the oil return opening being connected with crankcase.The oil return opening being connected with crankcase it is provided with, it is possible to the residual machine oil receiving oilhole making cam chamber bottom surface fail to enter bent axle reclaims, and can be directly entered in crankcase by oil return opening, it is to avoid cam chamber building up inside residual machine oil bottom cam chamber.
As preferably, described oil duct is positioned at the axis of bent axle.
Described oil duct can also be in the shape of a spiral around the axis of bent axle.Oil duct can be in the shape of a spiral around the axis of bent axle, and as the crankshaft rotates, the machine oil in spiral helicine oil duct is subject to centrifugal forces and can increase machine oil flow velocity in oil duct by the guiding of oil duct.When piston pin is descending, pressure in crankcase increases, machine oil in oil duct is towards receiving oilhole and the backflow of cam chamber direction, spiral helicine oil duct path increases, when piston pin goes downwards to the limit, and the machine oil that in oil duct, easy storage is not exited, when piston pin is up, the machine oil not exited in oil duct can suck crankcase in time and be lubricated crankshaft-link rod and piston pin and saw chain, it is ensured that crankcase inner engine oil is uninterrupted, it is ensured that saw chain continuous lubrication.
Second object of the present invention is mainly achieved by following proposal: be provided with several fuel-economizing blades on the end face of described cam, and fuel-economizing blade is distributed evenly around the axis of driven gear.Arranging several fuel-economizing blades on the end face of cam, fuel-economizing blade rotates along with driven gear, and fuel-economizing blade is distributed evenly around the axis of driven gear, it is to avoid driven gear glances off when rotating.The timing gears that liquid machine oil is rotated, after driven gear and cam break up formation atomization mist of oil, absorption, it is dropped in timing gears, form liquid machine oil on the parts such as driven gear and cam to be lubricated, the liquid machine oil being dropped on fuel-economizing blade can be subject to centrifugal effect along with rotating of fuel-economizing blade, the machine oil being dropped on fuel-economizing blade is thrown away again, atomization machine oil in the machine oil thrown away and cam chamber can be cut by fuel-economizing blade, guide, machine oil granule is made to be broken up further, and get rid of to each different direction, increase the atomizing effect of lubricant passage way further, increase lube range, strengthen lubricant effect.Breaing up and guiding through fuel-economizing blade, it is possible to extend the time of cam chamber inner engine oil atomization, and then slow down the flow velocity of oil circuit, lubricating oil can be saved.Meanwhile, when fuel-economizing blade rotates along with driven gear, it is possible to drive the flowing of cam chamber air, and then the parts such as timing gears, driven gear and cam can be played the effect of heat radiation.
As preferably, described fuel-economizing blade includes the oil-collecting plate being connected with cam face and the centrifugal film being connected with oil-collecting plate, oil-collecting plate and centrifugal film all in isosceles trapezoid, centrifugal film towards cam axis direction tilt and and oil-collecting plate between be provided with angle.Fuel-economizing blade includes the oil-collecting plate being connected with cam face and the centrifugal film being connected with oil-collecting plate, liquid machine oil in cam face drips and flows through oil-collecting plate, the flow direction of machine oil can be limited by oil-collecting plate, make part machine oil throw away along the direction of centrifugal film end face, slow down machine oil and flow to the speed receiving oilhole of bent axle.Oil-collecting plate and centrifugal film are all in isosceles trapezoid, i.e. one hem width is the narrowest, the oil-collecting plate of isosceles trapezoid is different with the direction that machine oil is guided by narrow limit diverse location with centrifugal film broadside, the machine oil being i.e. dropped in oil-collecting plate diverse location is different by the centrifugal direction thrown away, the machine oil being dropped in centrifugal film diverse location is different by the centrifugal direction thrown away, and centrifugal film towards cam axis direction tilt and and oil-collecting plate between be provided with angle, it is the most different that part machine oil is centrifuged, after flowing through centrifugal film along oil-collecting plate, the direction thrown away, rotation along with fuel-economizing blade, oil-collecting plate and centrifugal film can make any two machine oil or the cutting of mist of oil, the direction guided all differs, increase machine oil atomizing effect further.
As preferably, described oil-collecting plate is the first corner away from one of them corner of one end of centrifugal film, and centrifugal film free end and the relative corner of the first corner location are the second corner, and the first corner and the second corner relative torsion are arranged.Oil-collecting plate is the first corner away from one of them corner of one end of centrifugal film, centrifugal film free end and the relative corner of the first corner location are the second corner, first corner and the second corner relative torsion are arranged, make oil-collecting plate and centrifugal film bending, the planar graph of oil-collecting plate and centrifugal film is isosceles trapezoid, after reversing, oil-collecting plate and centrifugal film are still that a hem width is the narrowest, ensure each position on oil-collecting plate, the guide direction of machine oil is all differed by each position and each position of oil-collecting plate and centrifugal film junction on centrifugal film, increase machine oil atomizing effect further.
As preferably, described machine oil pipe is provided with injection valve with the junction of cam chamber, and injection valve includes spool and valve gap, and valve gap is connected with valve core rotation, and valve gap is provided with the jet tangent with valve gap.Machine oil pipe is provided with injection valve with the junction of cam chamber, the valve gap of injection valve is connected with valve core rotation, when producing negative pressure in crankcase, machine oil is inhaled in machine oil pipe and flows through the spool of injection valve, then sprayed in cam chamber by jet, owing to jet is tangent with valve gap, machine oil applies outbreak firmly to valve gap after being sprayed by jet, and drive valve gap along Spool rotating, valve gap makes the jet of diverse location towards different position oil spouts when rotating, the oil being sparged in cam chamber sprays to timing gears, the position that driven gear and cam etc. are different, scope time in increase machine oil entrance cam chamber, and then strengthen break up, the effect guided, improve machine oil atomizing effect.
As preferably, described spool is round platform chamber near one end inner end portion of machine oil pipe, and spool internal diameter at machine oil pipe successively decreases towards the direction of machine oil pipe, and round platform chamber is internally provided with the flow regulating plate for moving axially.Spool is that truncated cone-shaped forms round platform chamber near one end terminal interior surface of machine oil pipe, and spool internal diameter at machine oil pipe successively decreases towards the direction of machine oil pipe, and round platform intracavity portion arranges flow regulating plate.When producing negative pressure in crankcase, also producing negative pressure in cam chamber, flow regulating plate moves towards cam chamber direction, makes round platform accent footpath increase, and increases the oil level flowing through spool；When crankcase pressure increases, cam cavity pressure also increases, and flow regulating plate moves towards sump direction, makes round platform accent footpath reduce, and reduces the oil level flowing through spool.Crankcase pressure along with the uplink and downlink that piston changes change rapidly time, the movement of flow regulating plate has certain time delay, i.e. when piston pin uplink and downlink speed, axially there is the swing of trace in flow regulating plate, when oil flow rate is too small, flow regulating plate can increase the bore in round platform chamber, when flow is excessive, the flow regulating plate of resilience can slow down the flow velocity of machine oil, it is achieved oil-feed balances.
As preferably, described round platform chamber is internally provided with the fixing axle coaxial with spool, fixing axle is connected with spool inwall by fixed disk, flow regulating plate is set on fixing axle and is slidably connected with fixing axle, and between flow regulating plate and fixed disk or the two ends of flow regulating plate are provided with buffer spring.Round platform chamber is internally provided with the fixing axle coaxial with spool, fixing axle is connected with spool inwall by fixed disk, flow regulating plate is set on fixing axle and is slidably connected with fixing axle, there is the through hole of hollow out for engine oil flow on fixed disk, flow regulating plate is along fixing axle slidable adjustment, between flow regulating plate and fixed disk or the two ends of flow regulating plate are provided with buffer spring, extend the time of flow regulating plate time delay further, ensure when crankcase pressure increases, machine oil remains able to enter in cam chamber by inertia and the time delay of flow regulating plate, steady flow is persistently fed in ensureing cam chamber, the machine oil of flow velocity.
Therefore, the gasoline chain saw of the present invention possesses following advantage: 1, sump is connected with cam chamber by machine oil pipe.It is provided with radially receives oilhole owing to bent axle is positioned at the trunnion outer surface of cam chamber, the axially arranged of bent axle has oil duct, one end of oil duct is conducted with receiving oilhole, the other end is positioned at below link rod head and is conducted with crankcase, therefore, cam chamber is connected with crankcase, when piston pin is up, in crankcase, space increases and forms negative pressure, also negative pressure is formed in the cam chamber being connected with crankcase, machine oil in sump is inhaled in cam chamber by machine oil pipe, along with timing gears, the machine oil of entrance is carried out breaing up the machine oil forming atomization by the rotation of driven gear and cam, the machine oil of atomization can be to the trunnion of bent axle, timing gears, driven gear, each component of the engine interiors such as cam is lubricated.Absorption machine oil on engine components becomes liquid, operative liquid machine oil by timing gears, driven gear and the cam in rotating is centrifugal throw away after break up through timing gears, driven gear and cam again, it is achieved standing cloud；2, the machine oil after atomization is broken up, can be dripped on each parts on the engine after centrifugal, improves lubricant effect.Another part liquid machine oil is wandered on bent axle, it is inhaled into oil duct by the receipts oilhole on main bearing journal and enters crankcase along oil duct, entering the machine oil in crankcase can be to the link rod head of bent axle, the sidewall of cylinder piston pin and cylinder is lubricated, when piston pin is descending, space in crankcase reduces, pressure in crankcase increases, the machine oil being inhaled in crankcase is compressed, machine oil after compression is pressed into crankcase bottom in the oil pipe of the one side of cam chamber, machine oil is discharged along oil pipe, it is dropped on guide plate and saw chain, movement along with saw chain, whole saw chain is lubricated；3, in cam chamber, saw chain is lubricated by the machine oil to engine interior component lubrication by the receipts oilhole on bent axle and oil duct centralized recovery again, achieve gasoline engine lubricating oil circuit and the unification of saw chain lubricant passage way, and need not during whole set up and get rid of oiled-plate method and stir spindle, only the power of engine oil flow need to be provided to make the compact conformation of whole gasoline chain saw by the pressure differential produced during piston pin uplink and downlink, reduce taking up room of whole lubricating system, alleviate the weight of whole gasoline chain saw, the rotation rotarily driving timing gears and cam of bent axle, machine oil atomization is made to expand lube range and improve lubricant effect；null4、The timing gears that liquid machine oil is rotated、After driven gear and cam break up formation atomization mist of oil，Absorption、It is dropped in timing gears、Form liquid machine oil on the parts such as driven gear and cam to be lubricated，The liquid machine oil being dropped on fuel-economizing blade can rotating by centrifugal effect along with fuel-economizing blade，The machine oil being dropped on fuel-economizing blade is thrown away again，Atomization machine oil in the machine oil thrown away and cam chamber can be cut by fuel-economizing blade、Guide，Machine oil granule is made to be broken up further，And get rid of to each different direction，Increase the atomizing effect of lubricant passage way further、Increase lube range、Strengthen lubricant effect，Breaing up and guiding through fuel-economizing blade，The time of cam chamber inner engine oil atomization can be extended，And then slow down the flow velocity of oil circuit、Lubricating oil can be saved，Meanwhile，When fuel-economizing blade rotates along with driven gear，The flowing of cam chamber air can be driven，And then can be to timing gears、The parts such as driven gear and cam play the effect of heat radiation；5, oil-collecting plate and centrifugal film are all in isosceles trapezoid, i.e. one hem width is the narrowest, the oil-collecting plate of isosceles trapezoid is different with the direction that machine oil is guided by narrow limit diverse location with centrifugal film broadside, the machine oil being i.e. dropped in oil-collecting plate diverse location is different by the centrifugal direction thrown away, the machine oil being dropped in centrifugal film diverse location is different by the centrifugal direction thrown away, and centrifugal film towards cam axis direction tilt and and oil-collecting plate between be provided with angle, it is the most different that part machine oil is centrifuged, after flowing through centrifugal film along oil-collecting plate, the direction thrown away, rotation along with fuel-economizing blade, oil-collecting plate and centrifugal film can make any two machine oil or the cutting of mist of oil, the direction guided all differs, increase machine oil atomizing effect further.
Accompanying drawing explanation
Accompanying drawing 1 is the present invention a kind of structural representation in embodiment 1；
Accompanying drawing 2 is the top view of accompanying drawing 1；
Accompanying drawing 3 is sectional view at A-A in accompanying drawing 2；
Accompanying drawing 4 is partial enlarged drawing at C in accompanying drawing 3；
Accompanying drawing 5 is sectional view at B-B in accompanying drawing 2；
Accompanying drawing 6 is the bent axle structural representation in embodiment 1 of the present invention；
Accompanying drawing 7 is the bent axle structural representation in example 2 of the present invention；
Accompanying drawing 8 is the cam structural representation in embodiment 3 of the present invention；
Accompanying drawing 9 is the side view of accompanying drawing 8；
Accompanying drawing 10 is the fuel-economizing blade structural representation in example 4 of the present invention；
Accompanying drawing 11 is the injection valve of present invention sectional view in embodiment 5；
Accompanying drawing 12 is the sectional view in accompanying drawing 11 at D-D；
Accompanying drawing 13 is the sectional view in accompanying drawing 11 at E-E；
Accompanying drawing 14 is the injection valve of present invention sectional view in embodiment 6.
nullIllustrate: 01-bent axle，011-trunnion，012-link rod head，013-receives oilhole，014-oil duct，02-crankcase，03-cam chamber，031-oil return opening，04-timing gears，05-driven gear，06-cam，07-cylinder，08-piston pin，09-connecting rod，10-sump，11-machine oil pipe，12-machine oil filter core，13-fuel feed hole，14-valve，15-oil pipe，16-guide plate，17-saw chain，18-cabinet，19-petrol engine intake system，20-mounting groove，21-oil storage tank，22-fuel-economizing blade，221-oil-collecting plate，222-centrifugal film，223-the first corner，224-the second corner，23-injection valve，231-spool，232-valve gap，233-jet，234-flow regulating plate，235-fixed disk，236-fixes axle，237-round platform chamber，238-buffer spring.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment 1: as shown in Figure 1, 2, a kind of gasoline chain saw, including cabinet 18, petrol engine intake system 19, guide plate 16 and the saw chain 17 being arranged on guide plate, there is in the middle part of cabinet crankcase 02, bent axle 01 is installed in crankcase.As shown in Figure 3,4, the side of crankcase has cam chamber 03 and sump 10, cam chamber 03 is internally installed timing gears 04, driven gear 05 and cam 06, timing gears are set on the trunnion 011 of bent axle, driven gear is meshed with timing gears, and cam is fixed on the end face of driven gear 05.Cam chamber has fuel feed hole 13 on the side sidewall of sump, machine oil pipe 11 is connected on fuel feed hole 13, machine oil pipe 11 connects organic oil filter element 12 away from one end of fuel feed hole 13, machine oil filter core inserts in the machine oil within sump 10, cam chamber is connected with sump by machine oil pipe, has the oil return opening 231 being connected with crankcase bottom cam chamber.Crankcase is fixedly arranged above cylinder 07, and cylinder 07 is connected with petrol engine intake system, and the piston pin 08 of cylinder is connected with the link rod head 012 of bent axle by connecting rod 09.As shown in Figure 6, bent axle is positioned at the trunnion outer surface of cam chamber and has receipts oilhole 013 radially, the trunnion of bent axle axially has oil duct 014, oil duct is positioned at the axis of bent axle, oilhole is conducted, the other end is positioned at below link rod head and is conducted with crankcase for one end of oil duct and receipts, i.e. crankcase is connected with cam chamber with receiving oilhole by the oil duct on bent axle.As shown in Figure 1,5, crankcase bottom is provided with valve 14 near the one side of cam chamber, and valve 14 is provided with oil pipe 15, and one end of oil pipe is connected with valve, the other end is near saw chain 17.Crankcase outer surface has the mounting groove 20 for fixing oil pipe at oil pipe, and mounting groove 20 degree of depth has the degree of depth oil storage tank 21 less than mounting groove more than or equal to the diameter of oil pipe, mounting groove near oil pipe opening part.
Being provided with crankcase in the middle part of cabinet, install bent axle in crankcase, be provided above four-stroke cylinder at crankcase, the piston pin of cylinder is connected with the link rod head of bent axle.Petrol engine intake system is set outside cabinet, petrol engine intake system connects with cylinders, gasoline fuel gas mixed with air enters cylinder by gas handling system makes piston pin descending, fuel gas in compression cylinder when piston pin is up, lighting a fire fuel gas, gas fuel burning expands and makes piston pin descending, finally makes piston pin up in discarded discharge cylinder, complete four strokes, circulate successively.During piston pin uplink and downlink, band dynamic crankshaft rotates, and bent axle rotarily drives saw chain and moves the function realizing chain saw along guide plate.Crankcase side arranges cam chamber, and bent axle runs through cam chamber, is provided with timing gears and the driven gear engaged with timing gears in cam chamber, and cam is fixed on driven gear, and timing gears are fixedly sleeved on the trunnion of bent axle.Bent axle drives timing gears to rotate when rotated, and band moving cam rotates simultaneously, and cam can control air inlet and the aerofluxus of cylinder.Being filled with machine oil in the sump of crankcase side, sump is connected with cam chamber by machine oil pipe.It is provided with radially receives oilhole owing to bent axle is positioned at the trunnion outer surface of cam chamber, the axially arranged of bent axle has oil duct, oilhole is conducted, the other end is positioned at below link rod head and is conducted with crankcase for one end of oil duct and receipts, and therefore, cam chamber is connected with crankcase.When piston pin is up, in crankcase, space increases and forms negative pressure, also negative pressure is formed in the cam chamber being connected with crankcase, machine oil in sump is inhaled in cam chamber by machine oil pipe, along with the machine oil of entrance is carried out breaing up the machine oil of formation atomization by the rotation of timing gears, driven gear and cam, each components of engine interior such as the trunnion of bent axle, timing gears, driven gear, cam can be lubricated by the machine oil of atomization.Absorption machine oil on engine components becomes liquid, operative liquid machine oil by timing gears, driven gear and the cam in rotating is centrifugal throw away after break up through timing gears, driven gear and cam again, it is achieved standing cloud.Machine oil after atomization is broken up, can be dripped on each parts on the engine after centrifugal, improves lubricant effect.Another part liquid machine oil is wandered on bent axle, is inhaled into oil duct by the receipts oilhole on main bearing journal and enters crankcase along oil duct, and the sidewall of the link rod head of bent axle, cylinder piston pin and cylinder can be lubricated by the machine oil entered in crankcase.When piston pin is descending, space in crankcase reduces, pressure in crankcase increases, the machine oil being inhaled in crankcase is compressed, machine oil after compression is pressed into crankcase bottom in the oil pipe of the one side of cam chamber, and machine oil is discharged along oil pipe, is dropped on guide plate and saw chain, along with the movement of saw chain, whole saw chain is lubricated.In cam chamber, saw chain is lubricated by the machine oil to engine interior component lubrication by the receipts oilhole on bent axle and oil duct centralized recovery again, achieve gasoline engine lubricating oil circuit and the unification of saw chain lubricant passage way, and need not during whole set up and get rid of oiled-plate method and stir spindle, only the power of engine oil flow need to be provided to make the compact conformation of whole gasoline chain saw, reduce the weight of the whole gasoline chain saw that takes up room, alleviates of whole lubricating system by the pressure differential produced during piston pin uplink and downlink.The rotation rotarily driving timing gears and cam of bent axle, makes machine oil atomization expand lube range and improve lubricant effect.Machine oil in sump is inhaled in machine oil pipe by the filtration of machine oil filter core, owing to arranging fuel feed hole on the sidewall of cam chamber, therefore, the machine oil in machine oil pipe enters in cam chamber by fuel feed hole, enables machine oil to enter cam chamber from sump by fuel feed hole, machine oil pipe and machine oil filter core.The machine oil reclaimed in crankcase by pressure press-in crankcase bottom produced by descending piston pin, then is entered oil pipe by valve and lubricates saw chain in the valve of the one side of cam chamber.The mounting groove degree of depth that crankcase outer surface is arranged at oil pipe is more than or equal to the diameter of oil pipe, oil pipe can be fixed, mounting groove is provided with the degree of depth oil storage tank less than mounting groove near oil pipe opening part, oil storage tank can not only carry out a certain degree of storage to what the opening of oil pipe was discharged, and oil storage tank can carry out reverse resilience to the machine oil discharged, the machine oil that oil pipe is discharged by the machine oil of resilience realizes collision, buffering, slow down oil pipe and discharge speed and the output of machine oil, while saw chain is lubricated, play fuel-efficient, the effect of fuel-economizing.The oil return opening being connected with crankcase it is provided with, it is possible to the residual machine oil receiving oilhole making cam chamber bottom surface fail to enter bent axle reclaims, and can be directly entered in crankcase by oil return opening, it is to avoid cam chamber building up inside residual machine oil bottom cam chamber.
Embodiment 2: the present embodiment is essentially identical with the structure of embodiment 1, and difference is, as it is shown in fig. 7, the oil duct 014 on bent axle 01 is in the shape of a spiral around the axis of bent axle.Oil duct is in the shape of a spiral around the axis of bent axle, and as the crankshaft rotates, the machine oil in spiral helicine oil duct is subject to centrifugal forces and can increase machine oil flow velocity in oil duct by the guiding of oil duct.When piston pin is descending, pressure in crankcase increases, machine oil in oil duct is towards receiving oilhole and the backflow of cam chamber direction, spiral helicine oil duct path increases, when piston pin goes downwards to the limit, and the machine oil that in oil duct, easy storage is not exited, when piston pin is up, the machine oil not exited in oil duct can suck crankcase in time and be lubricated crankshaft-link rod and piston pin and saw chain, it is ensured that crankcase inner engine oil is uninterrupted, it is ensured that saw chain continuous lubrication.
Embodiment 3: the present embodiment is essentially identical with the structure of embodiment 1 or 2, and difference is, as shown in Figure 8,9, the end face of cam 06 is fixed with four fuel-economizing blades 22, and fuel-economizing blade is distributed evenly around the axis of driven gear 05.Fuel-economizing blade includes the oil-collecting plate 221 being connected with cam face and the centrifugal film 222 being connected with oil-collecting plate, oil-collecting plate and centrifugal film are all in isosceles trapezoid, centrifugal film towards cam axis direction tilt and and oil-collecting plate between be provided with angle, the angle of angle is between 45 ° to 180 °, and the present embodiment optimized angle is 120 °.
Arranging several fuel-economizing blades on the end face of cam, fuel-economizing blade rotates along with driven gear, and fuel-economizing blade is distributed evenly around the axis of driven gear, it is to avoid driven gear glances off when rotating.The timing gears that liquid machine oil is rotated, after driven gear and cam break up formation atomization mist of oil, absorption, it is dropped in timing gears, form liquid machine oil on the parts such as driven gear and cam to be lubricated, the liquid machine oil being dropped on fuel-economizing blade can be subject to centrifugal effect along with rotating of fuel-economizing blade, the machine oil being dropped on fuel-economizing blade is thrown away again, atomization machine oil in the machine oil thrown away and cam chamber can be cut by fuel-economizing blade, guide, machine oil granule is made to be broken up further, and get rid of to each different direction, increase the atomizing effect of lubricant passage way further, increase lube range, strengthen lubricant effect.Breaing up and guiding through fuel-economizing blade, it is possible to extend the time of cam chamber inner engine oil atomization, and then slow down the flow velocity of oil circuit, lubricating oil can be saved.Meanwhile, when fuel-economizing blade rotates along with driven gear, it is possible to drive the flowing of cam chamber air, and then the parts such as timing gears, driven gear and cam can be played the effect of heat radiation.Fuel-economizing blade includes the oil-collecting plate being connected with cam face and the centrifugal film being connected with oil-collecting plate, liquid machine oil in cam face drips and flows through oil-collecting plate, the flow direction of machine oil can be limited by oil-collecting plate, make part machine oil throw away along the direction of centrifugal film end face, slow down machine oil and flow to the speed receiving oilhole of bent axle.Oil-collecting plate and centrifugal film are all in isosceles trapezoid, i.e. one hem width is the narrowest, the oil-collecting plate of isosceles trapezoid is different with the direction that machine oil is guided by narrow limit diverse location with centrifugal film broadside, the machine oil being i.e. dropped in oil-collecting plate diverse location is different by the centrifugal direction thrown away, the machine oil being dropped in centrifugal film diverse location is different by the centrifugal direction thrown away, and centrifugal film towards cam axis direction tilt and and oil-collecting plate between be provided with angle, it is the most different that part machine oil is centrifuged, after flowing through centrifugal film along oil-collecting plate, the direction thrown away, rotation along with fuel-economizing blade, oil-collecting plate and centrifugal film can make any two machine oil or the cutting of mist of oil, the direction guided all differs, increase machine oil atomizing effect further.
Embodiment 4: the present embodiment is essentially identical with the structure of embodiment 3, difference is, as shown in Figure 10, oil-collecting plate 221 is the first corner 223 away from one of them corner of one end of centrifugal film 222, centrifugal film free end and the relative corner of the first corner location are the second corner 224, first corner and the second corner relative torsion are arranged, and the angle of relative torsion is between 45 ° to 180 °, and the present embodiment optimized angle is 120 °.Oil-collecting plate is the first corner away from one of them corner of one end of centrifugal film, centrifugal film free end and the relative corner of the first corner location are the second corner, first corner and the second corner relative torsion are arranged, make oil-collecting plate and centrifugal film bending, the planar graph of oil-collecting plate and centrifugal film is isosceles trapezoid, after reversing, oil-collecting plate and centrifugal film are still that a hem width is the narrowest, ensure each position on oil-collecting plate, the guide direction of machine oil is all differed by each position and each position of oil-collecting plate and centrifugal film junction on centrifugal film, increase machine oil atomizing effect further.
Embodiment 5: the present embodiment is essentially identical with the structure of embodiment 1 or 2, difference is, as shown in Figure 11,12, machine oil pipe 11 is fixed with injection valve 23 with the junction of cam chamber, injection valve 23 includes spool 231 and valve gap 232, valve gap is connected with valve core rotation, and valve gap 232 has the jet 233 tangent with valve gap.Spool is that round table surface constitutes round platform chamber 237 near one end terminal interior surface of machine oil pipe, and spool internal diameter at machine oil pipe successively decreases towards the direction of machine oil pipe, and round platform intracavity portion is provided with flow regulating plate 234.Round platform intracavity portion is fixed with the fixing axle 236 coaxial with spool, and fixing axle is connected with spool inwall by fixed disk 235, and flow regulating plate is set on fixing axle and is slidably connected with fixing axle.Such as Figure 13, in the middle part of fixed disk, hollow out is passed through for machine oil.
Machine oil pipe is provided with injection valve with the junction of cam chamber, the valve gap of injection valve is connected with valve core rotation, when producing negative pressure in crankcase, machine oil is inhaled in machine oil pipe and flows through the spool of injection valve, then sprayed in cam chamber by jet, owing to jet is tangent with valve gap, machine oil applies outbreak firmly to valve gap after being sprayed by jet, and drive valve gap along Spool rotating, valve gap makes the jet of diverse location towards different position oil spouts when rotating, the oil being sparged in cam chamber sprays to timing gears, the position that driven gear and cam etc. are different, scope time in increase machine oil entrance cam chamber, and then strengthen break up, the effect guided, improve machine oil atomizing effect.Spool is that truncated cone-shaped forms round platform chamber near one end terminal interior surface of machine oil pipe, and spool internal diameter at machine oil pipe successively decreases towards the direction of machine oil pipe, and round platform intracavity portion arranges flow regulating plate.When producing negative pressure in crankcase, also producing negative pressure in cam chamber, flow regulating plate moves towards cam chamber direction, makes round platform accent footpath increase, and increases the oil level flowing through spool；When crankcase pressure increases, cam cavity pressure also increases, and flow regulating plate moves towards sump direction, makes round platform accent footpath reduce, and reduces the oil level flowing through spool.Crankcase pressure along with the uplink and downlink that piston changes change rapidly time, the movement of flow regulating plate has certain time delay, i.e. when piston pin uplink and downlink speed, axially there is the swing of trace in flow regulating plate, when oil flow rate is too small, flow regulating plate can increase the bore in round platform chamber, when flow is excessive, the flow regulating plate of resilience can slow down the flow velocity of machine oil, it is achieved oil-feed balances.Round platform chamber is internally provided with the fixing axle coaxial with spool, fixing axle is connected with spool inwall by fixed disk, flow regulating plate is set on fixing axle and is slidably connected with fixing axle, fixed disk has the through hole of hollow out for engine oil flow, and flow regulating plate is along fixing axle slidable adjustment.
Embodiment 6: the present embodiment is essentially identical with the structure of embodiment 5, and difference is, as shown in figure 14, is provided with buffer spring 238 between flow regulating plate and fixed disk.Buffer spring it is provided with between flow regulating plate and fixed disk, extend the time of flow regulating plate time delay further, ensure when crankcase pressure increases, machine oil remains able to enter in cam chamber by inertia and the time delay of flow regulating plate, it is ensured that persistently feed the machine oil of steady flow, flow velocity in cam chamber.
Should be understood that this embodiment is merely to illustrate the present invention rather than limits the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Claims (10)
- null1. a gasoline chain saw，Including cabinet、Petrol engine intake system、Guide plate and the saw chain being arranged on guide plate，It is characterized in that，The crankcase for accommodating bent axle it is provided with in the middle part of cabinet，Crankcase is provided above the cylinder being connected with petrol engine intake system，The piston pin of cylinder is connected with the link rod head of bent axle，The side of crankcase is provided with for accommodating timing gears、Driven gear and the cam chamber of cam and for accommodating the sump of machine oil，The axle head of bent axle runs through cam chamber，Described cam chamber is connected with sump by machine oil pipe，The axle head of bent axle runs through cam chamber，Bent axle is positioned at the trunnion outer surface of cam chamber and is provided with radially receipts oilhole，The axially arranged of bent axle has oil duct，One end of oil duct is conducted with receiving oilhole、The other end is positioned at below link rod head and is conducted with crankcase，Crankcase bottom is communicated with the oil pipe for lubricating saw chain near the one side of cam chamber.
- Gasoline chain saw the most according to claim 1, it is characterised in that being provided with fuel feed hole on the sidewall of described cam chamber, one end of machine oil pipe is connected with fuel feed hole, the other end is provided with machine oil filter core, and machine oil filter core is positioned at inside sump.
- Gasoline chain saw the most according to claim 1, it is characterised in that described crankcase bottom is provided with valve near the one side of cam chamber, one end of oil pipe is connected with valve, the other end is arranged near saw chain.
- Gasoline chain saw the most according to claim 3, it is characterized in that, described crankcase outer surface is provided with the mounting groove for fixing oil pipe at oil pipe, and the mounting groove degree of depth is provided with the degree of depth oil storage tank less than mounting groove more than or equal to the diameter of oil pipe, mounting groove near oil pipe opening part.
- 5. according to the gasoline chain saw described in claim 1 or 2 or 3 or 4, it is characterised in that be provided with the oil return opening being connected with crankcase bottom described cam chamber.
- 6. according to the gasoline chain saw described in claim 1 or 2 or 3 or 4, it is characterised in that described oil duct is positioned at the axis of bent axle.
- 7. according to the gasoline chain saw described in claim 1 or 2 or 3 or 4, it is characterised in that described oil duct is in the shape of a spiral around the axis of bent axle.
- 8., according to the gasoline chain saw described in claim 1 or 2 or 3 or 4, it is characterised in that be provided with several fuel-economizing blades on the end face of described cam, fuel-economizing blade is distributed evenly around the axis of driven gear.
- Gasoline chain saw the most according to claim 8, it is characterized in that, described fuel-economizing blade includes the oil-collecting plate being connected with cam face and the centrifugal film being connected with oil-collecting plate, oil-collecting plate and centrifugal film all in isosceles trapezoid, centrifugal film towards cam axis direction tilt and and oil-collecting plate between be provided with angle.
- Gasoline chain saw the most according to claim 9, it is characterized in that, described oil-collecting plate is the first corner away from one of them corner of one end of centrifugal film, and centrifugal film free end and the relative corner of the first corner location are the second corner, and the first corner and the second corner relative torsion are arranged.
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| TW487770B (en) * | 1995-12-15 | 2002-05-21 | Honda Motor Co Ltd | Lubricating system in a 4-stroke engine |
| JP3784608B2 (en) * | 2000-03-21 | 2006-06-14 | 本田技研工業株式会社 | Handheld four-cycle engine |
| CN1219963C (en) * | 2002-09-20 | 2005-09-21 | 重庆宗申技术开发研究有限公司 | Pordable four-stroke gasoline engine |
| CN101413412B (en) * | 2007-10-16 | 2010-10-06 | 财团法人工业技术研究院 | Lubrication apparatus of four-stroke engine |
| CN101680316B (en) * | 2008-05-13 | 2013-01-09 | 胡斯华纳有限公司 | Lubrication system for a four-stroke engine |
| CN201486610U (en) * | 2009-06-30 | 2010-05-26 | 金莱克电气股份有限公司 | Four-stroke engine lubrication system |
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Address after: 321300 No. 110 Guinan Road, Xicheng, Yongkang City, Jinhua City, Zhejiang Province Patentee after: Zhejiang Pilot Electronics Co., Ltd. Address before: 321300 No.2 Lingshi Road, Xicheng, Yongkang City, Jinhua City, Zhejiang Province Patentee before: Yongkang City navigator's dynamic power machine Co., Ltd |
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