SU945285A1 - Diesel hammer - Google Patents

Description

one

The invention relates to the construction and can be used in the immersion of piles, sheet piling, as well as for loosening frozen and compacted bulk soil.

A diesel hammer is known, which includes a hammer part, a guide cylinder, a shaft, a piston unit, a check valve mounted on it, connected to a source of compressed air. A disadvantage of the known hammer is the complexity of its design.

Closest to the present invention is a diesel hammer, including a working cylinder with a hammer, nap; equaling rods, piston block, mounted on the last means for blowing in the form of a tubular shaft, connected to the exhaust pipe of the base machine C2.

However, the flushing of the exhaust gases does not provide high-quality cleaning and complete combustion of the fuel.

The purpose of the invention is to improve the quality of the purge of the working cylinder.

The goal is achieved by the fact that the diesel hammer, including a worker.

 lidder with impact part, guide rods, tamper, piston unit, fixed means for blowing in the form of a tubular barrel connected to the exhaust pipe of the base machine, a JO part shaft made from an internal wine. multi-thread cutting and equipped with a curved tube, one end of which is placed concentrically in the barrel, and the other is brought out through the side

15 wall of the trunk outward.

FIG. 1 schematically shows the proposed diesel hammer; in fig. 2 node I in figure 1; in fig. 3 - view A 20 on fi 2.

Claims (1)

Diesel hammer includes rods 1, connected to each other in the upper part of the crosshead 2, and in the lower part of the piston unit 3 with the first. In the upper part of the diesel hammer on the pants 1, a cat-catcher 5 is installed with a hook 6. In the piston unit 3, a support 7 is placed with a shaft 8. On the rods 1 there is also a shock part 9 with a working cylinder 10 and a pin 11. In the upper suit is a piston 4 a nozzle 12 is built in, which is connected hydraulically with the fuel pump 13 located on the piston block 3. On the piston block 3 there is also a tubular barrel k, one end of which is made with an internal multiple-thread screw, the screw lugs 15 of which form screw channels 16, On the above pattern for now, for example, chetyrehzakhodna screw nar.ezka. The second end of the barrel H ends with a fitting 17 on which the end of the flexible hose 18 is seated. The other end of the hose, 18 is seated on the exhaust pipe of the internal-combustion engine of the base machine (not shown). The basic machine is usually a tractor, an excavator, a car, etc. They constitute the mobile base for placing the diesel hammer and the mechanisms necessary for its use on it. A tube 19 is mounted in barrel H, one end of which is directed toward the wines (| -throwing of the barrel and placed in the latter concentrically with the formation of an annular gap 20, the other end 21 is in communication with the surrounding atmosphere. Diesel hammer works as follows. It is hung on the base machine and its shaft 8 is installed on the pile 22, and the shock part 9 is in the lower position. Then the gripper cat 5 is lowered to the lower position with the help of a special cable, and the gripper hook f) pin 11. Then the gripper cat 5 is moved upward together with the part of the shock-E- in the uppermost position is automatically disengaging the hook 6 and the pin 11 and the liberation of the hammering portion 9 drops down. No income to the lowest position of the cylinder 10 is closed by a piston and a further fall of the shock part 9 is accompanied by air compression and an increase in temperature in the cylinder 10. At the lower extreme position of part 9, the fuel pump 13 is activated and fuel is injected through the nozzle 12 of the working cylinder 10. The working mixture explodes in the cylinder 10 and the shock part 9 is thrown upwards. In this case, the reaction force acts through the piston unit on the pile 22, immersing it in the ground. Jumping to a certain height, shock; the part begins to fall again and the cycle repeats. At the same time, the exhaust gases of the engine of the base machine through the exhaust pipe, hose 18 and fitting 17 enter the cavity of the barrel 1 under the pressure of the engine exhaust. Passing through the annular gap 20, they increase their speed and create a reduced pressure in the area of the end 23. Air is sucked from the surrounding atmosphere into the indicated zone of reduced pressure through the tube 19. The total gas flow moves further and enters the zone of the screw barrel cutting. In this case, the central part of the flow is occupied by clean air, and its external part is occupied by exhaust gases, mainly consisting of carbon dioxide. The passage further through the screw channels 16, the outer part of the flow is twisted. Since carbon dioxide is heavier than air, it tends to occupy its outer zone in the spun flow. Thus, clean air; the spirit that has accidentally entered the outer zone is forced to the center of the gas stream. Next, the gas flow flies out of the barrel And in the direction of B. The central part 2k of the gas port consists of pure atmospheric air. With its further movement, it blows through the cavity of the working cylinder, ensuring high efficiency of the diesel hammer operation. The externally swirled part 25 is dissipated and carbon dioxide that does not support combustion does not enter the cavity of the working cylinder 10. Thus, during the flight of the shock part 9 upwards and its subsequent return, the cylinder cavity is blown with clean atmospheric air, which leads to fuel economy and improved conditions maintenance personnel, as it eliminates the release into the atmosphere of unburned atomized fuel. The invention of the Diesel Hammer, which includes a worker, a cylinder with a striker, is directed to