SU941566A1

SU941566A1 - Hydraulic percussive device

Info

Publication number: SU941566A1
Application number: SU802869318A
Authority: SU
Inventors: Леонид Александрович Полиновский
Priority date: 1980-01-09
Filing date: 1980-01-09
Publication date: 1982-07-07

Description

(54) ГИДРОУДАРНИК(54) HYDRODUPE

1one

Изобретение относитс к горной и строительной промышленности, в частности к ударным устройствам, которые могут, быть использованы в машинах дл разработки мерзлых грунтов и скальных пород, а также в конструкци х кузнечных молотов.The invention relates to the mining and construction industries, in particular to impact devices, which can be used in machines for the development of frozen soils and rocks, as well as in forging hammers.

Известен гидроударник, содержаший размешенный в корпусе боек с фланцем и установленную на бойке кольцевую плаваюшую диафрагму дл разделени внутренней полости корпуса на силовую и взвод шую камеры 1.A hydraulic hammer is known, which contains a floating flange placed in the housing and an annular floating diaphragm mounted on the striker for dividing the internal cavity of the housing into a power and arming chamber 1.

Недостатком известного гидроударника вл етс ненадежность его работы вследствие наличи проточек и каналов в корпусе бойка, а также нестабильности работы узла гидрозахвата.A disadvantage of the known hydraulic hammer is the unreliability of its operation due to the presence of grooves and channels in the body of the striker, as well as the instability of the hydraulic gripping unit.

Цель изобретени - повышение надежности гидроударника.The purpose of the invention is to improve the reliability of the hydraulic hammer.

Поставленна цель достигаетс тем, что гидроударник, содержащий размещенный в корпусу ступенчатый боек с фланцем и установленную на бойке кольцевую плавающую диафрагму дл разделени внутренней полости корпуса на силовую и взвод щуюThe goal is achieved by the fact that a hydraulic hammer containing a stepped striker with a flange placed in the housing and an annular floating diaphragm mounted on the striker for dividing the internal cavity of the housing into a power and cocking

камеры, снабжен гидропневматическим аккумул тором , обратным клапаном и втулкой с фланцем в средней части и двум концевыми участками с различными диаметрами , в корпусе со стороны силовой камеры соосно выполнены седло дл бойка и ступенчата полость, в которой подвижно в осевом направлении смонтирована втулка , сопр женна своими цилиндрическими поверхност ми с соответствующими цилиндрическими поверхност ми ступенчатой полос10 ти, боек выполнен с хвостовиком, установленным в отверстии втулки и ступенью меньшего диаметра размещен во взвод щей камере, при этом диафрагма установлена на ступени большего диаметра бойка, отверстие ки соединено со сливом, ее концева часть большего диаметра обрашена в сторону бойка , полость, образованна в корпусе концевым участком втулки большего диаметра и ее фланцем соединена с гидравлической полостью упом нутого аккумул тора, который chambers equipped with a hydropneumatic accumulator, a check valve and a sleeve with a flange in the middle part and two end sections with different diameters; its cylindrical surfaces with corresponding cylindrical surfaces of a stepped stripe, the striker is made with a shank mounted in the bore of the sleeve and a step of smaller diameter is placed about the charging chamber, with the diaphragm mounted on a step of a larger diameter of the striker, the hole ki is connected to the drain, its end part of a larger diameter is facing the striker; battery which

Claims

20 through a check valve is connected to a pressure line, and the cavity is formed in the housing by the end part of a sleeve of smaller diameter and its flange is connected to the power chamber. The drawing shows a drummer, the cut Hydrodark contains a body consisting of a shell 1 with covers 2 and 3, strut studs 4, a stepped firing pin with a flange 5, a step 6 of smaller diameter and a step 7 of larger diameter, on which the annular floating diaphragm 8 is mounted, separating the internal cavity of the hull to the power chamber 9 and cocking the 10 chamber. The plunging chamber 10 is connected to a compressed air balloon and a step 6 of the striker is placed in it, entering the opening of the red face 2, in which the tool 12 is installed and the opening 11 is made for air to escape. In the housing cover 3 there is a step cavity 13, in which an axially movable sleeve with a flange 14 in the middle part and two end sections 15 and 1b with different diameters is movable in the axial direction. The end section 15 of a smaller diameter forms with the flange 14 and the lid 3 a closed cavity 17 connected by a channel 18 to the power chamber 9 to which the channel 19 is connected to the pressure pipe 20, and the larger end section 16 forms a closed cavity 21 to the flange 14 and the lid 3, connected by channel 22 to the hydraulic cavity of the hydropneumatic accumulator 23, which is connected via a check valve 24 to a pressure line 20. At step 7 of the striker, a shank 25 is installed in the bore hole, which is permanently connected to th. In the lid 3 and there is a saddle 26 for the striker and a check valve 27 is mounted to displace the fluid from the cavity of the saddle 26 through the channel 28. The device operates as follows. Under the action of the initial pressure in the charging chamber 10, the firing pin and the diaphragm 8 are held in the upper position. When the hydraulic pump is switched on, the fluid through the channels 18, 19 and 22 is supplied to the power chamber 9 and the cavities 17 and 21. In this case, the sleeve will move to the striker. Under the action of pressure in the power chamber 9, the diaphragm 8, moving in step 7 of the striker, compresses the gas in the charging chamber 10. At the end of the charging cycle, at a pressure close to the worker. the diaphragm 8 interacts with the flange 5 of the striker and mixes with the striker until the end of the latter comes out of the seat cavity 26, after which the striker begins to accelerate. The diaphragm 8 at the same time is mixed in the opposite direction, compensating for the increase in the volume of the force chamber 9. At the end of the working stroke, the shank 25 of the striker leaves the bore hole and the power chamber 9 communicates with the drain, the pressure in it and in the cavity 17 drops, the sleeve and the diaphragm 8 return to initial position. After that, the hammer rises and its shank enters into the opening of the sleeve disconnecting the power chamber 9 from the drain. The remaining liquid from the cavity of the seat 26 is forced into the power chamber 9 through the check valve 27 and the channel 28. The cycle is repeated. This design of the hydraulic hammer does not require the implementation of grooves and channels in the body of the striker, and also allows you to increase the stability of the cocking and power chambers. Claims of Invention A hydraulic hammer containing a stepped firing pin located in a housing with a flange and mounted on a boyke-ring floating diaphragm for dividing the internal cavity of the housing into power and erecting chambers, characterized in that in order to increase reliability, it is equipped with a hydropneumatic accumulator, check valve and bushing with a flange in the middle part and two end sections with different diameters, in the housing from the side of the force chamber, a saddle for the striker and a step cavity in which the movement is but in the axial direction the sleeve is mounted, conjugated with its cylindrical surfaces. The corresponding cylindrical surfaces of the stepped cavity are arranged with the shank mounted in the hole of the sleeve, and the smaller diameter step is placed on the charging chamber, while the diaphragm is mounted on the larger diameter step the striker hole of the sleeve is connected to the drain, its end part of a larger diameter faces the striker, a cavity formed in the body by the end portion of the sleeve of a larger diameter and Lanz connected to the cavity of said hydraulic accumulator which, through a check valve connected to the pressure line, and the cavity formed in the housing end portion of the smaller diameter sleeve and its flange is connected to the power chamber. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 629334, cl. E 21 C 3/20, 1976 (prototype).