Hydro-pneumatic impact device

 

The invention relates to the construction and road machines and is intended for use in static-dynamic Ripper durable and frozen soils for compaction in confined conditions, fracture of asphalt and concrete pavement of roads and other works. The device includes a housing, a piston-head, oral platoon and draining the battery, the control unit is managed through a window in the casing and valve control, the ends of which define the cavity control, communicated with the cavity drain, and zabolotnikova cavity. The device is further provided with a hydraulic accumulator and a valve connected to each other by pipelines. Valve made off with his message through the piping, check valves and channels in one of the positions with cavities drain, platoon and Zabolotnoho and the other with the cavity of the platoon. The valve control is set back to its original position by a spring, and the diameter of the piston-striker in the cavity of the platoon is greater than its diameter in the cavity drain. The invention provides reducing power requirements for the development of durable and frozen soils, soil compaction in confined conditions, destruction style=" page-break-before:always;">

The invention relates to the construction and road machines and is intended for use in static-dynamic Ripper durable and frozen soils for compaction in confined conditions, fracture of asphalt and concrete pavement of roads and other works.

Known hydro-pneumatic impact device that is closest to the technical essence and the achieved result of the present invention, comprising a housing with drain and pressure channels, the piston-head, made with belts and o-ring groove and forming with the walls of the body cavity of the platoon and the drain and the battery, the control unit is managed through a window in the housing, the ends of which define the cavity control, communicated with the cavity of the drain and zabolotnikova cavity /A. C. 846672 the USSR, MKI E 02 F 5/30, E 21, 1981/.

The disadvantage of this design is the need for an additional pump to create pressure in the pressure line, which reduces the reliability of this design increases the energy consumption on the development of soils and cannot provide a sustainable mode of hydropneumogonia.

Task - reducing energy consumption on the development of durable and frozen soils, abundant is the Technical result - improving the reliability of the device. The technical result is achieved by the fact that hydro-pneumatic impact device comprising a housing, a piston-head, made with a belt and forming with the walls of the body cavity platoon and drain, and the battery, the control unit is managed through a window in the casing and valve control, the ends of which define the cavity control, communicated with the cavity drain, and zabolotnikova cavity is further provided with a hydraulic accumulator and a valve connected to each other by piping, and the valve made off with his message through the piping, check valves and channels in one of the positions with cavities drain, platoon and Zabolotnoho, and the other with the cavity of the platoon, and the valve control is set back to its original position by a spring, and the diameter of the piston-striker in the cavity of the platoon is greater than its diameter in the cavity drain.

Spring used to return the valve to its original position, the piston-hammer is made with a single belt, the diameter of the piston-striker in the cavity of the platoon is greater than the diameter of the working cavity, to ensure Voisine piston-striker in the direction of the platoon used the energy accumulator that allows you to refuse the use of an additional pump and enables independent operation of the device from external energy sources. This increases the operational reliability of the device.

In Fig. 1, 2, 3 shows the proposed device in different operating positions, the cut.

Hydro-pneumatic impact device consists of a housing 1, a piston-striker 2, the housing of the control unit 3, the spool 4 control, hydraulic accumulator 5, the valve 6. Hydraulic accumulator 5 is connected to the valve 6 by line 7 and line 8. The valve 6 is made dip with positions I and II. The piston-hammer 2 divides the housing 1 into the cavity preparation platoon 34, cavity drain 35 and the cavity 36, the battery, filled with compressed gas from the battery 33. In case 1, a radial channel 9, which is connected through a pipeline 10 with the valve 6. The piston-hammer 2 has a belt 11. The spool 4 is made annular groove 12, and the housing 3 of the control unit - managed-through window 13.

The end face of the valve 4 control through the channel 14 formed with a housing 1 of the control cavity 37. In the housing 3 of the control unit a radial channel 15, and the casing 1 has a channel 16, which connect alost 38. The valve 4 control connected to the housing 3 of the control unit through a dual spring 19. In case 3 block is a control channel 20 connected to the valve 6 by the pipe 21. In case 1, a punch made the channel 22 and an additional radial channel 23. The channel 23 through conduit 24 communicates with the valve 6. The channel 22 through the check valve 25, pipe 26 and valve 27 is connected to the valve 6. The control cavity 37 of the channel 28 is constantly communicated with the working cavity 35. In the housing 3 of the control unit is performed, the channel 29 and the channel 30 connected by a conduit 31 through a check valve 32.

The operation of the device is as follows.

In the initial position of the piston-hammer 2 under the action of the gas of the battery 33 to the extreme left (Fig.1) position. Hydraulically operated valve 6 is in position I, in which the hydraulic accumulator 5 is connected through check valves 27 and 25 pipes 7, 8, 10, 26 and the channels 9, 22, 20 with drain cavities 35, platoon 34 and Zabolotnoho 38, as shown in Fig.1. The valve 4 control under the action of the spring 19 is in the middle position, closing (shutting off) the channels 13, 15, and 30. The control cavity 37 is connected across the p>

After application of the force of static preload to the piston-striker 2 from the left side he moves, compressing the gas in the accumulator 33, and the liquid through the channel 9, the check valve 27, the pipelines 10, 8, 7 arrives - in accumulator 5, charging him. At the same time on channel 9, the pipe 26 through the check valve 25 and the channel 22 in the cavity of a platoon of 34. At this time, the slide valve 4 control fixed, because the pressure in the control cavity 37 and Zabolotnoho cavity 38 are the same.

Upon further movement of the piston-striker channel 9 is locked by the belt 11, resulting in the flow of fluid through it stops, the pressure in the control cavity 37 increases and becomes greater than the pressure in the cavity 38, causing the spool 4, the control moves to the left, opening the channel 13. When this fluid from the control cavity 37 through the channel 14 channel 13 flows into the cavity platoon 34 and through the channel 23 and the pipe 24 into the cylinder control valve 6, switching it to the position II, as shown in Fig. 2. After the switch allocator in POS.II hydraulic accumulator 5 starts razrazhatsya, while the fluid from the hydraulic accumulator to line 7, through raspredelitel 6, the pipe 26 through the check valve 25 and the channel 22 the settlement of the water. Simultaneously, fluid from the accumulator through the pipeline 21 and the channel 20 enters zabolotnikova cavity 38, causing the slide valve 4 control move to the right, opening the channel 30. Fluid from the control cavity 37 through the channel 29, the conduit 31, through check valve 32 and the channel 30 is fed into the cavity 38, acting on the spool 4 and causing it to additionally move to the right. At the end of the platoon channel 28 is cut off, the valve 4 control is moved to its rightmost position, reporting channels 13 and 15 through the annular groove 12, as shown in Fig.3. Causing the fluid from the cavity platoon 34 through the channel 13, the annular groove 12, the channel 15, the pipe 17 through the check valve 18 and the channel 16 enters the cavity drain 35. The pressure in cavity 34 is reduced and the valve 6 takes the position I. After that, under the action of energy of a compressed gas accumulator 33, the piston-head moves to the left and to its working stroke. At the same time the pressure in the cavities 37 and 38 are aligned, the valve 4 control returns to its original position and the whole system occupies its original position.

Then the cycle repeats.

Claims

Hydro-pneumatic impact device containing the block control unit managed through a window in the casing and valve control, the ends of which define the cavity control, communicated with the cavity drain, and zabolotnikova cavity, wherein the device is further provided with a hydraulic accumulator and a valve connected to each other by piping, and the valve made off with his message through the piping, check valves and channels in one of the positions with cavities drain, platoon and Zabolotnoho and the other with the cavity of the platoon, and the valve control is set back to its original position by a spring, and the diameter of the piston-striker in the cavity of the platoon is greater than its diameter in the cavity drain.

 

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