SU1548344A1 - Hydraulic vibrohammer - Google Patents

Abstract

The invention relates to the construction and can be used in drilling operations during the descent and extraction of casing, piles, grooves, etc. The aim of the invention is to increase the efficiency of the vibratory hammer. The hydraulic vibrohammer comprises a housing 1 with anvils 2 and 3, a cylinder 4, a piston 5 placed in a cylinder 4 and connected to the striker 6, an exhaust valve 7 installed in the upper part of the cylinder 4, equipped with a seal 12, an exhaust channel 8 and two places on the outer and inner surfaces. The exhaust valve 7 has the ability to interact with the inner seat of the intake valve 9. The exhaust valve 7 is installed in the exhaust channel 8 of the intake valve 9, is spring-loaded relative to the latter and is made with exhaust channels Lamy 11. The internal seat 19 of the intake valve 9 is placed in the upper part of the latter, and the shank 20 of the exhaust valve 7 has the ability to interact with the striker collar 6 and a lower face. 1 hp f-ly, 4 ill.

Description

(21) 4401527 / 31-33

(22) 04/04/88

(46) 07.03.90. Vup Number 9

(71) Donetsk Polytechnic Institute

(72) A.A.Karakozov, V.I.Blinov, O.Ya.Toder and G.M. Valitov

(53) 624.155.15 (088.8) (56) Kolomoets A.V. Prevention and elimination of stickings in exploration drilling. -M .: Nedra, 1985, p. 141.

USSR Author's Certificate (R 1446240, class E 02 D 7/10, 05/04/87.

(54) HYDRAULIC VIBROMOLOT (57) The invention relates to the construction and can be used in drilling operations during the descent and extraction of casing, piles, grooves, etc. The aim of the invention is to increase the efficiency of the vibratory hammer. The hydraulic vibrohammer comprises a housing 1 with anvils 2 and 3, a cylinder 4, a piston 5 placed in a cylinder 4 and connected with a striker 6, an exhaust valve 7 mounted on the top of a cylinder 4, equipped with a seal

(L

ate

J

00 p

12, the outlet channel 8 and two seats along the outer and inner surfaces. The outlet valve 7 has the ability to interact (with the inner seat of the intake valve 9. The outlet valve 7 is installed in the outlet channel 8 of the intake valve 9, spring-loaded

The invention relates to construction and can be used in brown work during the descent and extraction of pipes, piles, grooves, etc.

The purpose of the invention is to increase the efficiency of the vibratory hammer.

FIG. 1 shows vibrohammer, non-native position; in fig. 2 - the same, b the moment of closing the exhaust valve, fca of fig. 3 - the same, after the rearrangement of slupans; in fig. 4 - the same, at the moment of disruption of the exhaust valve from the inner seat during the striker stroke.

The vibratory hammer comprises a housing 1 with an upper 2 and lower 3 anvils, a cylinder 4, a piston 5 placed in the cylinder-center 4 and connected to the striker 6, you have an outflow valve 7 installed in the exhaust channel 8 of the intake valve 9, spring-loaded with respect to the latter by spring 10 and fitted with exhaust ducts 11. An inlet valve with density 12 is installed in the upper part of cylinder 4 and spring-loaded spring 13 relative to the valve box 14 with pressure 15 and exhaust, 16 channels and low pressure chamber 17 | fines associated with the exhaust duct 16. The intake The valve 9 has two seats on the outer and inner surfaces, with the outer seat 18 interacting with the upper part of the cylinder 4, and the inner seat 19 is made in the upper part of the sleeve of the intake valve 9 with the ability to interact with the exhaust valve 7. The amount of free running q striker 6 at moves up and down is determined by the formula

bt - S

- S &

 with

issue

where Sg - the stroke of the striker 6;

of the latter and is made with exhaust ducts 11. The inner seat 19 of the intake valve 9 is located in the upper part of the latter, and the shank 20 of the exhaust valve 7 has the ability to interact with the striker 6 flange and the bottom end. 1 hp f-ly, 4 ill.

five

five

0

0 5 0 5 0

five

Dtoln

S is the distance from the lower end of the shank 20 of the exhaust valve 7 to the lower end wall 21, limiting the stroke of the exhaust valve 7 at the striker 6j, while the distance from the flange of the shank 20 of the exhaust valve 7 to the upper end wall 22 limiting the striker cavity 6, determined by the formula

 kk

SZ Sen + 5 by,

V

where Sgn is the intake stroke

valve 9.

The lower part of the striker 6, the rod 23, has a smaller diameter as compared with the piston 5 and is the second (small) stage of the differential piston.

Vibrating hammer works as follows.

In the initial state, the hammer 6 is in its lowest position, the inlet valve 9 is closed, and the exhaust valve 7 is open. The working fluid through the discharge channel 15 and the gap between the housing 1 and the cylinder 4 flows under the piston 5, which, together with the die 6, begins to move upwards. In this case, the fluid from the piston cavity of the cylinder 4 is displaced into the well through the exhaust ports 11, the exhaust port 8 and the exhaust passage 16.

After the striker 6 has passed the distance S, it interacts with its lower inner end wall 21 with the shank 20 of the exhaust valve 7 and together with the latter makes a joint movement to the distance SBbin, compressing the spring 10. When the exhaust valve 7 passes the distance SBbra, it interacts with the inner footprint 19 inlet

valve 9, closing the outlet channel 8. The pressure in the resulting closed cavity also increases under the action of the pressure differential between the super-piston cavity of the cylinder 4 and the seal 12 separated from the pressure line by the chamber 17 of the low pressure valve box 14, and also due to

the energy of the exhaust valve 7 and the JQ holding the body with the anvils, the valve three-way travel with the striker at a very small free-wheeling distance d the inlet valve 9 is detached from the top of the cylinder 4.

a lindr, a piston placed in it, connected to a striker, in which a cavity is limited at the top and bottom by the end walls, and a striker 6 strikes the top- 5 at the top of the cylinder.

her anvil 2.

Further movement of the valve group upward through the distance is carried out due to the pressure of the working fluid on it, which begins to flow 20 into the piston chamber of the piston 4. In this case, the distance from the end wall 22 to the shoulder of the shank 20 becomes equal to Sj - a, since

  (SrSB "n-a + (S # + Se" n-a) - (Sg - a) SS - a.

Since the working area of the piston 5 from above is larger than the bottom by the size of the area of the rod 23, the firing pin 6 begins to move downwards and a distance

55

a blows his top

end wall 22 on the flange of the shank 20 of the exhaust valve 7, the last separation from the seat 19. This opens the exhaust channel 8.

Then, the striker passes the distance of the poor travel a, which has an insignificant value (a - 0) and is almost equal to the free stroke upward, and strikes the lower anvil 3. In this case, the spring 13 rejects the intake valve 9 to the interaction of the outer seat 18 with the upper part of the cylinder 4, and the spring g howled

striker stroke value; the distance from the lower end of the shank to the lower end wall bounding the cavity in the striker; exhaust valve stroke

at 10 at the same time, the exhaust valve 7 returns to its initial position, at -50. At this distance from the shoulder, the tail valve of the exhaust valve moves to the exhaust valve's wick to the upper initial position in the proposed end wall, which limits the vibro-hammer significantly less. Further. The die is determined by the pattern; the work cycle of the vibratory hammer is repeated. le

The use of hydraulic vibration grinder allows to increase the efficiency due to more stable operation of the valve group, reduction of hydraulic resistance, as well as energy losses in the area

sa +

V p

where the stroke of the intake valve.

free running during the downward stroke of the hammer, which is productive when vibrating, diving piles and grooves.

but

Claims (2)

Claims of invention. Hydraulic vibrohammer, solindra, a piston placed in it, connected to a striker, in which there is a cavity limited at the top and bottom end walls, an inlet valve with a seal, an outlet channel and seats on the outer and inner surfaces interacting with the inner fitting the place of the inlet valve, the exhaust valve of the shank of which is located in the cavity of the striker and is made with a collar at the end, characterized in that, in order to increase no efficiency, the exhaust valve is made with exhaust ducts, is installed in the exhaust channel of the intake valve and is spring-loaded relative to the latter, while the inner seat of the intake valve is located in its upper part, and the tail of the exhaust valve has the ability to interact with the lower end and the shoulder with the end walls of the striker, limiting its cavity. 2. Vibrating hammer according to claim 1, characterized in that the free wheeling (a) of the striker is determined by the formula q ss - s, 6YP striker stroke value; the distance from the lower end of the shank to the lower end wall bounding the cavity in the striker; exhaust valve stroke the distance from the tail valve shoulder to the upper wall, limiting the quenching, is determined by sa + V p where the stroke of the intake valve. five # } - m with i 1L "L -4" "t- G "41 СХ1 with : -fein