RU93095U1 - HYDRAULIC SHOCK DEVICE - Google Patents

Abstract

 A hydraulic shock device, comprising a housing with a gas accumulator, chambers with liquid, a piston-striker, a distribution unit, characterized in that it is equipped with displacement sensors, piston-striker speeds and an electronic duty cycle control unit, while the displacement and speed sensors are in communication with an electronic duty cycle control unit, which is in communication with the distribution unit of the hydropercussion device.

Description

The utility model relates to construction, mining, road engineering, in particular, to hydraulic percussion devices used as replaceable attachments of active action to the basic machines for the development of soils (demolition, ramming) by impulse loads.

A hydraulic shock device is known (USSR Author's Certificate No. 685819, class E.21C 3/20, E02F 9/22, 1979), which includes a body, a hammer, a distribution unit with an elastic locking and regulating element, cocking and overflow chambers.

The disadvantage of this device is the limited possibility of its application, due to the fact that the stroke size of the striker depends on the longitudinal dimensions of the cylindrical elastic locking-regulating element.

A percussion device is also known (USSR Author's Certificate No. 1369887, class B25D 17/00, 1988), which contains a source of shock pulses in the form of a cam with mirror-mounted working surfaces located on the axis of the cam, a working tool.

The disadvantage of this device is the complexity of the design of the percussion device, the inability to control the magnitude of the stroke of the tool when performing various types of work.

The closest solution known from the technical nature is a hydropercussion device (USSR Author's Certificate No. 863854, class E21C 3/20, E02F 9/22, 1981), comprising a housing, an air accumulator, a hammer, pistons, a distribution unit with a cylindrical shut-off -regulating element, cocking, overflow chambers made outside of the locking-regulating element.

However, such a hydraulic percussion device does not transfer all the kinetic energy of the hammer to the developed soil, since soil development occurs within the limited stroke of the hammer of the hydraulic shock device. This reduces the efficiency of the hydropercussion device, the productivity and efficiency of soil development.

The objective of this utility model is to increase the efficiency of a hydropercussion device, the productivity and efficiency of soil development.

To solve this problem, the hydraulic percussion device is equipped with displacement sensors, piston-striker speed sensors and an electronic duty cycle control unit, while displacement and speed sensors are in electrical communication with the duty cycle electronic control unit. The electronic duty cycle control unit is in electrical communication with the distribution unit of the hydraulic impact device.

The essence of the utility model is illustrated in the figure, which shows the proposed hydraulic impact device.

A hydraulic shock device consists of a housing (1) with a gas battery (2), a cocking (3), overflow (4) chamber, a striking piston (5), a distribution unit (6) of a hydraulic shock device.

The hydraulic shock device also includes a displacement sensor (7) of the piston-striker, a speed sensor (8) of the piston-striker and an electronic duty cycle control unit (9). These sensors are in electrical communication with the electronic duty cycle control unit (9). The electronic operating cycle control unit (9) is in electrical communication with the distribution unit (6) of the hydraulic device, the positions of which correspond to: B - the platoon of the piston-hammer (5), P - the working stroke of the piston-hammer

The operation of the device is as follows. From the pump of the base machine (for example, an excavator), the working fluid through the distribution unit (6) is supplied to the cocking chamber (3) of the hydraulic shock device. There is an idle stroke (platoon) of the striking piston (5) and gas compression in the gas accumulator (2) of the hydraulic hammer. At the end of the platoon, under the action of the compressed gas of the accumulator (2), the piston-striker (5) makes a working stroke, displacing the working fluid from the cocking chamber (3) into the overflow chamber (4) and acts on the developed soil. In this case, using displacement sensors (7) and a speed sensor (8), the displacement and speed of the striking piston (5) are measured. Signals from displacement sensors (7) and speed (8) are transmitted to the electronic duty cycle control unit (9).

In the electronic duty cycle control unit (9), the actual values of the speed and displacement of the striking piston (5) are compared with the set values and, if they coincide, the signal from the electronic duty cycle control unit (9) is fed to the distribution unit (6) of the hydraulic shock device for platoon (idling) of the striking piston (5). Next, the cycle of the hydropercussion devices is repeated.

The use of sensors for the movement of the hammer, the speed of the hammer and the electronic operating cycle control unit allows you to transfer all the kinetic energy of the piston-hammer to the developed soil. This increases the efficiency of the hydropercussion device, productivity and efficiency of soil development.

Claims (1)

A hydraulic shock device, comprising a housing with a gas accumulator, chambers with liquid, a piston-striker, a distribution unit, characterized in that it is equipped with displacement sensors, piston-striker speeds and an electronic duty cycle control unit, while the displacement and speed sensors are in communication with an electronic duty cycle control unit, which is in communication with the distribution unit of the hydropercussion device.