SU905048A1

SU905048A1 - Percussion-type tool

Info

Publication number: SU905048A1
Application number: SU762414199A
Authority: SU
Inventors: Анатолий Филиппович Кичигин; Анатолий Филиппович Горбань; Владимир Михайлович Сопряжинский; Владимир Никифорович Кононенко; Олег Маркович Терентьев; Виктор Дмитриевич Рудюк; Владимир Петрович Василюк
Original assignee: Киевский Ордена Ленина Политехнический Институт Им.50-Летия Великой Октябрьской Социалистической Революции
Priority date: 1976-10-22
Filing date: 1976-10-22
Publication date: 1982-02-15

Description

(54) УДАРНЫЙ ИНСТРУМЕНТ(54) IMPACT TOOL

1one

Изобретение относитс к гидропневмоударным устройствам и может быть использовано Б исполнительных органах горных машин дл создани динамических нагрузок , в устройствах дл бурени взрывных скважин и шпуров, в клепальных и рубиль- 5 ных приспособлени х.The invention relates to hydro-pneumatic impact devices and can be used in the executive bodies of mining machines for creating dynamic loads, in devices for drilling blast holes and boreholes, in riveting and cutting tools.

Известен механический ударный инструмент , содержаш.ий два подпружиненных в осевом направлении ударника и вращающийс от привода стакан с зубцами, воздействующими на головки ударников. Ударники размещены коаксиально друг к другу, имеют одинаковую массу и поджаты пружинами равной жесткости к стакану, два зубца которого расположены симметрично по окружности и выполнены с профилем, is представл ющим собой двойную интегральную зависимость от разности среднего и текущего ускорени бойка, движущегос на удар по углу поворота стакана 1.A mechanical percussion instrument is known, comprising two spring-loaded drummers in the axial direction and a tumbler rotating from the drive, with teeth acting on the heads of the impactors. Drummers are placed coaxially to each other, have the same mass and are pressed by springs of equal stiffness to the glass, two teeth of which are symmetrically arranged around the circumference and are made with a profile that is a double integral dependence on the difference between the average and the current acceleration of the striker moving at an angle kick turning the glass 1.

Недостатками такой конструкции вл ютс наличие механической св зи между ударниками , усложн ющей конструкцию и снижающей надежность работы инструмента, а также гашение только ударной отдачи на корпус инструмента.The disadvantages of this design are the presence of a mechanical connection between the impactors, complicating the design and reducing the reliability of the tool, as well as damping only the impact of impact on the tool body.

Наиболее близким по технической сущности к изобретению вл етс ударный инструмент , содержащий цилиндрический корпус с соосными рабочими полост ми, соединенными с источником рабочей среды, размещенный в корпусе инструмент и установленные в соответствующих полост х корпуса коаксиальнб друг к другу два ударника , взаимодействующие с инструментом 2.The closest in technical essence to the invention is a percussion instrument comprising a cylindrical body with coaxially working cavities connected to a source of working medium, a tool housed in the body and two coaxial coaxially mounted to the other cavities interacting with the tool 2.

Недостатком данной конструкции вл етс отсутствие элемента управлени дл обеспечени синхронного противодвижени ударников и гашени отдачи на корпус на прот жении всего рабочего цикла.The disadvantage of this design is the absence of a control element to provide synchronous counter-movement of the impactors and damping of impact to the hull throughout the entire working cycle.

Цель изобретени - гашение отдачи на корпус, а также сообщение дополнительной энергии ударнику при его рабочем ходе .The purpose of the invention is the damping of recoil to the body, as well as the message of additional energy to the striker during his working stroke.

Поставленна цель достигаетс тем, что корпус выполнен с дополнительной замкнутой полостью, расположенной между рабочими полост ми и заполненной рабочей жидкостью, в которой расположены нерабочие торцы обоих, ударников.The goal is achieved by the fact that the casing is made with an additional closed cavity located between the working cavities and filled with the working fluid, in which the non-working ends of both of the strikers are located.

Claims

The drawing shows a schematic percussion instrument. The percussion instrument contains a cylindrical body 1 with coaxial working cavities (not shown in the drawing). In the front end of the housing 1, a bush 2 is placed for mounting the tool 3. In the front working cavity there is a hollow hammer 4 with a piston 5 dividing the cavity into the liquid 6 and gas 7 chambers. The non-working rear end 8 of a hollow drummer is placed in an additional closed cavity 9 filled with a working fluid, which acts as a rigid connection between the hollow and stepped drummer 10, which is placed coaxial to the hollow shock absorber 4. In the same closed cavity 9 there is an idle end of the 11 speed drummer 10 which is connected to the reservoir 12, located in the rear working cavity and also dividing the rear working cavity into liquid 13 and gas 14 chambers. To control the operation of the device, there is a two-way spool valve 15, the control cavities of which are connected to the gas chambers of each impactor using control pipes 16. To fix the position of the control piston 17 of the spool valve, a ball retainer 18 is installed in the control valve housing. zi liquid chambers of each drummer with a pump or drain. Percussion instrument works as follows. When the working fluid is supplied from the pump through the spool valve 15 to the liquid chamber, a hollow drummer 4 starts up and gas in the gas chamber 7 is compressed. In addition, the non-working end 8 of the hollow drummer is inserted into the closed cavity 9, acting through the fluid filling this cavity, on the non-working end 11 of the stepped drummer 10. When cocking the hollow drummer 4, the liquid chamber 13 of the rear working cavity is connected to the drain and the stepped drummer 10 performs a working stroke under the pressure of gas compressed in the gas chamber 14, and minute, filling the closed cavity. 9, and strikes the working tool 3. As the hollow drummer 4 is cocked, the piston 5 compresses the gas in the gas chamber 7 and, when the predetermined pressure is reached, the compressed gas through the control pipe 16 acts on the control piston 17 and flips the valve which is fixed by the ball retainer 18, the liquid chamber 13 is connected to the pump and the stepping drummer 10 starts charging, the gas is compressed in the chamber 14. When the gas pressure necessary to overcome the fixing force is reached, the spool brasyvaets to its original state and the duty cycle is repeated. The introduction of an additional closed cavity filled with working fluid and in which the non-working ends of both drummers are located allows reducing the impact acting on the tool body by 20%, as well as imparting additional energy to the striker performing the working stroke. Claims of the invention A percussion instrument comprising a cylindrical body with coaxially working cavities connected to a source of working medium, an instrument disposed in the housing and mounted in respective cavities of the housing two impactors coaxial to one another, characterized in that recoil to the hull and the message of additional energy to the striker during its working stroke, the hull is made with an additional closed cavity located between the working cavities and the filled whose fluid in which the non-working ends of both drummers are located. Sources of information taken into account during the examination 1. USSR author's certificate No. 277424, cl. B 25 D 9/04, 1969.

2. USSR author's certificate No. 63285, cl. E 21 C 37/24, 1940 (prototype).

Pump