SU725870A1

SU725870A1 - Portable motor saw

Info

Publication number: SU725870A1
Application number: SU762431685A
Authority: SU
Inventors: Валерий Григорьевич Дудоладов; Геннадий Александрович Кузнецов; Николай Данилович Ромашкин; Любовь Викторовна Федотова; Владимир Николаевич Обливин; Анатолий Павлович Полищук; Леонид Ефимович Силин; Владислав Иванович Пугин
Priority date: 1976-12-20
Filing date: 1976-12-20
Publication date: 1980-04-05

Description

1one

Изобретение относитс к переносным моторным пилам и может быть, использовано в лесной и деревообрабатывающей промышленности.The invention relates to portable motor saws and can be used in the forest and woodworking industry.

Известна переносна моторна пила содержаща двигатель с пильным аппаратом , стойку, бензобак и руко тки управлени , жестко соединенные в опоную раму, св занную со стойкой при помощи амортизаторов 1.A known portable chain saw contains a motor with a sawing unit, a stand, a gas tank and control handles rigidly connected to a frame connected to the stand with shock absorbers 1.

Наиболее близкой к предлагаемой по технической сущности вл етс конструкци переносной моторной пи.пы, содержаща двигатель.с пильным аппарр ,том, стойку, бензобак и руко тку управлени , жестко соединение в опорнуто раму, св занную со стойкой при помощи амортизаторов и соосно расположенных с ними ограничителей колебаний 2 .Closest to the proposed technical essence is the design of a portable motor pi.py containing a motor with a saw apparr, a trestle, a gas tank and a control handle, rigidly connected to the frame, connected to the stand using shock absorbers and coaxially aligned with they limit the vibrations 2.

Недостатком .известных устройств вл етс сложность конструкции ограничителей колебаний, привод которых осуществл етс от рычага управлени дросселем посредством гибкого троса в пружинной оболочке. В зимних усло- ви х трос обмерзает, что выводит привод ограничителей из стро .A disadvantage of the known devices is the complexity of the design of vibration limiters, which are driven from the throttle control lever by means of a flexible cable in a spring sheath. In winter conditions, the cable freezes over, which removes the drive of the limiters.

Целью изобретени вл етс упрощение конструкции пилы и процессаThe aim of the invention is to simplify the design of the saw and the process

ее эксплуатации на холостых и рабочих режимах.its operation at idle and operating modes.

Достигаетс это тем, что к&ждый амортизатор выполнен в виде эластичной втулки с размещенными на ней кольцевыми выступами, а ограничитель колебаний - в виде направл ющей, причем втулка установлена в направл ющей с зазором. ..This is achieved by the fact that the shock absorber is made in the form of an elastic sleeve with annular projections placed on it, and the vibration limiter is in the form of a guide, the sleeve being installed in the guide with a gap. ..

00

На фиг, Г изображена переносна моторна пила; на фиг. 2 - то же, вид сверху; на фиг. 3 - разрез А-А фиг. 1..Fig, D depicts a portable motor saw; in fig. 2 - the same, top view; in fig. 3 - section A-A of FIG. one..

Переносна моторна пила содер5 жит двигатель 1 внутреннего сгорани , редуктор 2, пильный аппарат 3, стойку 4, в нижней части которой имеетс поворотно-зажиивдое устройство 5. Опорна рама 6 состоит из топливного The portable motor saw contains an internal combustion engine 1, a gearbox 2, a saw unit 3, a rack 4, in the lower part of which there is a turn-and-hold device 5. The support frame 6 consists of a fuel

0 бака 7, рул 8 с руко тками управлени , жестко закрепленного на топливном баке 7. Стойка 4 имеет несущий кронштейн &/ жестко присоединенный в верхней части ./стойки 4. Руль 0 of the tank 7, the steering wheel 8 with control handles fixed on the fuel tank 7. The rack 4 has a carrying bracket & / rigidly attached in the upper part of the rack 4. The steering wheel

5 8 и топливный бак 7 посредством элас- . тичных амортизаторов 10 соедин етс с несущим кронштейном 9 в трех точках (BJ Г и Д).5 8 and fuel tank 7 through elas-. The primary shock absorbers 10 are connected to the carrier bracket 9 at three points (BJ T and D).

Claims

At each point, two shock absorbers 10 are attached to the bracket 9 0 of the rack, and on the other side the shock absorbers attach to the eyes of the fuel tank 7. The elastic shock absorber 10 has on its surface at least ojwtH protruding very centrally from the front axle of the shock absorber 10, the protrusion 11. On the front part of the cavity, the cdbcrtO amber cellar amber; Shkrepl $ pots cylindrical directions are made of aluminum, alloy. Moreover, the concentric lines of the IyuyOviena are c) with the calculated gap between the inner surfaces of the cylindrical direction 12 and parallel to it. The support is prevented from overloading by the limiting damper 13. Rudder 8 has a throttle control lever 14 and handles 15. The device operates as follows. . For the saw to work, the engine 1 is started by holding the saw by the handles 15.rule 8, at this time the coupling is from the side of the gearbox, not eKjm) 4eHa, the saw apparatus 3 with the chain also does not work, Et V is the idle mode of the engine. weight of the saw k unbalanced moments bi inertia ogt of operation of engine i is transmitted i to all three points of bracket 9 of rack 4, creating forces that are equally applied to bracket 9 of all three points (B, T7; d) and it is directed downwards. The forces applied by the operator to hold the saw by the handles 15, the lems up and act on the lugs of the fuel tank 7. - „,. “Consequently, for every e: thermal shock absorber 10 at points B J D there are oppositely directed force saws, which means that the calculated clearance between the bottom and the bottom part of the guides 12 and the bottom of them concentric protrusions are 11725870 elastic. shock absorber 10, which leads to the emergence of dry friction forces between the lower. These additional friction forces reduce the resonant vibration levels when the engine is operating in a salt mode in the hands of 15. During the sawing process, the active mass of the saw is balanced by the sawn wood and the gap. And acquires an initial value, contributing to the effective damping of the vibration during sawing on the handles 15 due to the stability of the natural frequency of the oscillation of the support frame. Claims of the invention A portable motor-saw containing an engine with a sawing device, a RACK, a gas tank of control knobs rigidly connected to a support frame connected to the stand with shock absorbers and co-located with them about the branches of the shaft, l and h. with the fact that, in order to simplify the design of the Saw and the process of its operation at idle and working modes, each amrtizer is made in the form of an elastic sleeve with annular projections placed on it, and: the vibration limiter is in the form of a Guide, vtu Single installed in the guide with play. Sources of information taken into account in the examination 1.AVORSKOY certificate of the USSR No. 511205, cl. B 27 B 17/00, 1977.

2. USSR author's certificate for application No. 2337891, cl. B 27 B 17/00, 1976 (prototype).