CN2313372Y - Gasoline chain saw with long handle - Google Patents

Abstract

The utility model discloses a portable chain saw with a high handle used for lumbering and wood manufacturing and operated by one man. The utility model is mainly composed of a two-stroke small gasoline engine which is provided with a guide plate of a clutch saw chain and a saw frame with an oil tank. The utility model is characterized in that the lower part of the saw frame is provided with a circular disc and is buckled with a gasoline engine through a clamping hoop to form an integral chain saw with a high handle. The cost of the saw is made to reduce by one fifth; weight is reduced by 1.5Kg; cutting speed is raised by 7.43m/S; efficiency is improved by 1.66 times; the utility model utilizes the gasoline engine for exhausting waste gas for the use of heating hands in winter and has the functions of suction and counterpressure effects to cause power to increase by 10% to 20% and fuel consumption to reduce by 5% to 10%; the utility model becomes an updating product of implement for forest lumbering.

Description

High chain saw

The utility model relates to a kind of high chain saw, especially for forest lumbering delimbing producing material and forest culture and management foster portable high power-driven tool.

At present the height that uses of China forest zone chain saw by the Liuzhou machinery plant fifties and weinan woods machine factory produce the seventies (051) and (GJ85) two kinds of portable power driven height of type the felling instrument.It mainly is made up of a single-cylinder air-cooled two-stroke miniature gasoline engine and deceleration box assembly, saw chain guide plate, high operation saw frame.Gasoline engine and deceleration box are two body structures, and the saw chain guide plate is installed on the reduction box assembly, and saw frame is vertical, and be installed on the gasoline engine crank case and fixedly stubbornly refuse can be movable, cut up gently that wood need not be bent over so claim height chain saw.1978 forestry publishing house " chain saw and lumbering " introduced these two kinds high the principle of chain saw and use.Gasoline engine is high the power source of chain saw, and its bent axle one end and reduction box assembly connect; Turn round along the guide plate groove by driving saw chain by drive sprocket after a pair of big or small gear reduction; The other end directly connects the igniting of magneto gasoline feed machine and the cooling cylinder is used.The fastest speed with 10.5m/s of saw chain is aimed at and is lumbered when gasoline engine runs up, and is cut under the sawtooth effect and blocks, and reaches the purpose of lumbering.

(051) type that Liuzhou machinery plant makes the fifties is high initially to play important function to chain saw in loggerization; But because design period early, the key technical indexes has lagged behind modern designs and manufacturing technology level; Engine efficiency only is 2.2KW (5000r/min), and cutting speed is several times transformed the back and is 7.4m/S, and weight of chain saw is 11.5Kg, and weight/power ratio is 5.14Kg/KW, power per liter 23.79KW/I.Production efficiency is low and vibrations are big; But the forest zone recoverable amount is big, about 10,000 of year productions.

The height that northwest, weinan woods machine factory manufactured and designed in 1973 is applicable to the forest zone use that the northeast and the southern gradient are slow to chain saw.It has drawn the advantage of (051) type chain saw appearance structure, advanced technical indicator and structural parameters have been adopted simultaneously, make the big 3.3Kg of this chain saw power (7000r/min), the high 10.5m/s of cutting speed, weight/power ratio is 3.4Kg/KW, power per liter is 38.93KW/I, and annual production is about 20,000, even has the phenomenon that supply falls short of demand.But two do not have big improvement and new breakthrough during the last ten years, and complete machine weight is that technical performance indexs such as 11.3Kg and international chain saw cutting speed, weight/power ratio fall behind level than still belonging to, and its model is (GJ85).

The purpose of this utility model is to overcome existing height the chain saw traditional design mode, combustion gas when providing a kind of and can directly make full use of the engine mechanical energy, reduce unnecessary power consumption and utilizing work, make the cutting speed height, in light weight, cost is low, business efficiency is better, use in severe cold winter to be unlikely the finger frost bitten and because of the more advanced felling update facility of every technical indicator of " empty-handed occupational disease ".

Embodiment of the present utility model is that the single-cylinder air-cooled two-stroke miniature gasoline engine of Yi Yitai dress guide plate, saw chain, centrifugal clutch, felling dog, lubricating oil pump are on the basic structure of critical piece, the adpting flange disk of a same size in having the saw frame bottom of an adpting flange disk and band fuel tank, is housed in gasoline engine crank case design, turn to the clip retainer by the band plate hand, saw frame and gasoline engine are snapped together, can utilize wrench to make gasoline engine turn to arbitrarily that required angle is lumbered again or of producing material whole high chain saw.

The muffler that the utility model makes gasoline engine links to each other with the saw frame seamless steel pipe by a metal hose, allow waste gas some discharge after by the saw frame handgrip, produce certain temperature, the frostbite of avoiding lumbering winter is pointed, the forest zone is very with practical value especially northeastward.

With the height that use in present China forest zone chain saw is compared, advantage of the present utility model is:

(1) taken down heavy reduction box assembly, directly driven, reduced power consumption, mechanical energy is made full use of and made the manufacturing cost expense reduce by 1/5 according to the chain acting, weight saving 1.51Kg.Thereby reduced labour intensity, in forest, walked the time of selecting the tree time above cutting down trees because the chain saw workman bears a heavy burden.

(2) the saw chain cutting speed is brought up to 17.43m/s from 10.5, raises labour productivity 1.66 times, and the chain saw weight/power ratio is reduced to 2.92Kg/KW, the economic indicator of chain saw is risen and international chain saw is on close level.

(3) position that turns to clip to adopt makes height, short strong chain saw (no matter homemade or import) interchangeability; Dual-use makes high oil can adjust angle arbitrarily according to 360 °, is convenient to the producing material of lumbering under the different terrain gradient; Can also separate fast, maintaining chain saw and safe handling are brought great convenience.

(4) close according to frame installation site and muffler, make muffler part waste gas by the discharging of saw frame seamless steel pipe with high temperature resistant flexible pipe, can reduce engine noise, also because the saw frame steel pipe is higher and length, engine exhaust is produced swabbing effect, design opening size, pressure at expulsion variation and gas port phase place are matched, increase the pressure differential in the intake process, the engine charging efficiency improves, strengthen exhaust dynamic effect and back pressure effect comprehensive function, thereby improved the power performance and the economic performance of gasoline engine power.

(5) the muffler combustion gas has certain heat, makes the saw frame handgrip produce certain temperature, and severe cold limit in winter is felled hand and can be warmed oneself.Make muffler another part discharge directions aim at sawing chip removal orientation in addition, unlikely wood chip disorderly flies, and uses height the sanitary condition of saw thereby improve.

(6) the suitable angle of the installation site of saw frame and gasoline engine and sawing direction of motion design is done relative motion, and saw cuts power is strengthened and the vibrations part of repealing by implication; Saw frame is installed and the handgrip place takes combined factors such as raising that the damping gum cover also has sawing speed together, and vibrations are reduced.

Of the present utility model in a word high chain saw, in light weight, cost is low, efficient is high, vibrations and noise are little, brisk more laborsaving, comfortable convenience; The exhaust changing waste into valuable that makes full use of mechanical energy and gasoline engine is produced; Working environment, sanitary condition are improved; Thereby can prolong its service life and actual application value; And make height new progress arranged to chain saw, new development

Description of drawings of the present utility model:

Fig. 1 is an end view of the present utility model;

Figure 1B is to being the disengaging buckle view that turns to the clip retainer;

Fig. 2 is that the A-A of Fig. 1 is to view.

Below in conjunction with accompanying drawing the utility model is narrated:

Accompanying drawing 1,2 has provided an embodiment of the present utility model.As shown in Figure 1, 2: the crankcase 14 of gasoline engine 1 and clutch disk 9 are snapped together by turning to clip retainer 12.Design four holes of slotting formula socket that have with saw frame 3 on the clutch disk 9, and fastening with two bolts 8 of M16, four rubber sleeves 7 are housed in the jack, purpose is to reduce the handgrip vibrations.The seamless steel pipe that a dismountable ventilation heat-resistant hose 5 and saw frame 3 are installed on the muffler 4 communicates, and purpose is that gasoline engine waste gas can also discharge by saw frame.The crankcase 14 of gasoline engine is equipped with saw chain 18 and guide plate 19, and saw chain 18 is directly hung and is connected on the centrifugal clutch dish of the gasoline engine clutch end driving wheel 17.From outside watch form one whole high chain saw; There has not been chain saw the also consumed power of bulky complex to strengthen the reduction box mechanism of cost cost than present height.Present embodiment adopts the single-cylinder air-cooled two-stroke pump diaphragm type carburator of 1E52F type gasoline engine, and characteristics are that volume is little, and are in light weight, and any orientation can normally be started, and power output is 3.3KW/7000rpm.Fixedly the clip retainer 12 that turns to of gasoline engine and saw frame is No. 20 cold bundle steel plates punch forming of thick 2mm, and at Fig. 1, the 2nd, gripping orientation, external diameter are φ 130mm, and height is 15mm; Adjusting nut 11 is that M6 is used to adjust clip chucking degree, and spanner 6 is to be used to handle locked clip device and to unclamp so that adjust gasoline engine guide plate saw chain cutting angle; Breaking away from button 10 is that gasoline engine 1 and saw frame 3 are separated rapidly, and dismounting when purpose is to use, easy maintenance and energy be the safe escape dangerous situation rapidly.Fuel tank 2 is screwed in saw frame.

During use, at first spur starter 13, gasoline engine 1 beginning low speed is run well, adjust saw cutting angle by turning to clip 12, operator's two hands hold respectively saw frame 3 about two long rubber handgrips, 15 places, with the right hand thumb spanner 16 of opening the throttle, when gasoline engine 1 rotating speed improves above 2800r/min gradually, centrifugal clutch dish driving wheel 17 just drives saw chain 18 along the guide groove entry into service on the guide plate 19, aim at this moment and cut wood reinforcing gently, lumbered because the sawtooth effect on the saw chain 18 advances to saw to block automatically, finish and cut down trees or the producing material operation; Simultaneously muffler 4 combustion gas parts make handgrip 15 places of saw frame 3 produce uniform temperature after place, steel pipe hole discharges through heat-resistant hose 5, and winter user's two hands also can be warmed oneself; A part of in addition exhaust blows to saw chain 18 1 sides, make wood chip by the saw chain band less than on one's body the operator, sanitary condition when improving lumbering.

Claims (3)

1, a kind of high chain saw, by a single-cylinder air-cooled two-stroke miniature gasoline engine and centrifugal clutch, guide plate, saw chain, high operation saw frame, fuel tank, turn to clip etc. to form for critical piece, it is characterized in that gasoline engine and saw frame by clutch disk with turning to clip to be snapped together.

2, according to claim 1 high chain saw; The muffler that it is characterized in that gasoline engine and saw frame one end steel pipe are by the heat-resistant hose exhaust that is connected.

3, according to claim 1 high chain saw; It is characterized in that centrifugal clutch dish directly is contained in bent axle outputting power one end of gasoline engine and directly drives saw chain along the running of guide plate groove, need not the deceleration device of any consumed power.

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