RU2535562C2 - Device to submerge pipes into soil - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: device to submerge pipes into soil comprises a body, a striker placed in a body, a head part coupled with the body, a facility to limit movement of the head part relative to the body. Additionally it is equipped with an elastic element installed between the body and the head part, and coupling of the head part with the body is made with a gap.

EFFECT: increased efficiency of pipe submersion with increase of device resource.

4 cl, 2 dwg

Description

The present invention relates to the field of construction equipment and is intended mainly for immersion in the soil of metal pipes, mainly with trenchless laying of underground utilities.

Known pulsed pneumatic device for clogging pipes (AS USSR No. 1036857, IPC E02F 5/18, published in BI No. 31 for 1983), comprising a housing with a hammer, an air distribution mechanism and a mating head associated with the housing. The shock impulse transmitted by the drummer to the head of the device, passing through the body, is transmitted to the pipe and ensures high efficiency of the pipe immersion. The disadvantage of the device as. No. 1036857 is that part of the pulse when passing through the body is spent on its deformation. In addition, the body of the known device experiences significant tensile stresses due to the fact that the body is fixed to the pipe by the tail part, and a blow is applied to the head part. This significantly reduces the durability of the housing.

Closest to the proposed is a device for immersing pipes in the ground (RF patent No. 2135692, IPC E02D 7/02, E02F 5/18, publ. 08/27/1999), including a housing, a drummer housed in the housing and a head portion associated with the housing. In this case, the coupling of the head part with the housing is made with the possibility of disconnection at the time of impact and subsequent connection by means of a pulling element.

This embodiment of the device provides the removal of shock loads from the housing and the transmission of the shock pulse directly from the head to the pipe. This increases the efficiency of immersion pipes and the durability of the housing.

The disadvantage of the device according to the patent of the Russian Federation No. 2135692 is the occurrence at the time of impact of the gap between the housing and the head part. When this occurs, the leakage of compressed air from the idling chamber, which slows the movement of the drummer at idle and, therefore, reduces the efficiency of the device.

The technical problem solved by the invention is to increase the efficiency of immersion of pipes while increasing the resource of the device.

The problem is solved in that the device for immersion in the soil of the pipes, including the body, the drummer housed in the body, the head part mating with the body, and the head part moving restriction means relative to the body are further provided with an elastic element installed between the body and the head part, and the head part mating with the housing is made with a gap.

The pairing of the head part with the body with a gap ensures the removal of shock loads from the body, and the elastic element installed between the body and the head part ensures the tightness of the idling chamber and simultaneously dampens the shock loads on the body. In this case, the entire shock impulse is transmitted from the head to the clogged pipe, and the movement of the drummer at idle does not slow down, which leads to an increase in the efficiency of the pipe immersion. At the same time, the resource of the device is increased due to the fact that the shock pulse is spent only on useful work and does not load the case.

For even more reliable sealing of the idling chamber and removal of shock loads from the housing, it is advisable to install the elastic element with preliminary compression.

It is advisable to restrict the movement of the head relative to the body in the form of rods that close the connection of the head with the body. This will allow to maintain high efficiency of the device with a simple technology for its manufacture, which helps to solve the technical problem.

It is advisable to restrict the movement of the head part relative to the body in the form of a radial groove on the outer surface of the body, the corresponding radial groove on the inner surface of the head part and the balls movably mounted in the groove formed by the grooves. This design will ensure the compactness of the device while maintaining high efficiency of its work, which also contributes to the solution of the technical problem.

The invention is illustrated by drawings, in which Fig. 1 shows a longitudinal section of a device with means for restricting the movement of the head relative to the body in the form of rods that close the connection of the head with the body; figure 2 is a longitudinal section of a device with means for restricting the movement of the head relative to the housing in the form of spherical recesses in the housing and the head and a ball movably mounted in the recesses.

A device for immersing pipes in the soil (Fig. 1, Fig. 2) includes a head part 1, a body 2, inside which a drummer 3 is installed, which strikes the head part 1. The connection of the head part 1 with the body 2 is made with a gap, and the head is moved part 1 relative to the housing 2 is limited by means 4. Between the head part 1 and the housing 2 is installed an elastic element 5. Compressed air is supplied to the device through the duct 6. The device with the head part 1 is rigidly attached to the clogged pipe 7.

Means 4 of restricting the movement of the head part 1 relative to the housing 2 can be made in the form of rods 8, closing the connection of the head part 1 with the housing 2 (Fig. 1).

It is also possible the execution of means 4 for restricting the movement of the head part 1 relative to the housing 2 in the form of a radial groove 9 on the outer surface of the housing 2, the corresponding radial groove 10 on the inner surface of the head part 1 and the balls 11 movably mounted in the grooves formed by the grooves (Fig. 2) .

The proposed device operates as follows.

Under the action of compressed air supplied through the duct 6, the striker 3 makes reciprocating movements in the housing 2 and strikes the head part 1 of the device, forming in it a shock pulse of a certain amplitude and duration. Through the head part 1, the shock pulse is transmitted to the end face of the driven pipe 7, immersing the pipe 7 in the ground. Since the pairing of the head part 1 and the body 2 is made with a gap, and an elastic element 5 is installed between the body 2 and the head part 1, the shock pulse is not transmitted to the body 2, but, passing through the head part 1, is transmitted to the driven pipe 7, maintaining its amplitude and duration, which contributes to the efficiency of immersion of the pipe and increase the resource of the housing 2. The tool 5 restricts the movement of the head part 1 relative to the body 2, preventing the flight of the head part 1 from the body 2.

In the case of the execution of the means 4 in the form of rods, the movement of the head part 1 relative to the housing 2 is limited by the length of the rods 8.

In the case of the execution of the means 4 in the form of a radial groove 9 on the outer surface of the housing 2 of the corresponding radial groove 10 on the inner surface of the head part 1 and balls 11 movably mounted in the raceway formed by the grooves, the movement of the head part 1 relative to the housing 2 is limited by the gap between the walls of the grooves 9 and 10 and the outer surface of the balls 11.

After striking the head part 1, the striker 3 begins to move in the opposite direction under the action of pressure in the idling chamber 12. In this case, due to the elastic element 5, the pressure in the idle chamber 12 remains the same as at the time of striking, and the movement of the striker 3 reverse direction does not slow down.

Next, the cycle of the device is repeated until the pipe 7 is immersed in the ground by a predetermined amount.

After immersing the pipe 7 in the ground, the device is switched to the reverse mode. The drummer begins to strike at the rear end of the housing 2, moving it in the opposite direction. Due to the rods 8 or balls 11 in the same direction, the movement of the head part 1 occurs. In this case, the head part 1 is released from the pipe 7.

Claims (4)

1. A device for immersing pipes in the ground, including a housing, a drummer housed in the housing, a head associated with the housing, means for restricting the movement of the head relative to the housing, characterized in that it is further provided with an elastic element installed between the housing and the head, and the interface the head part with the housing is made with a gap. 2. The device according to claim 1, characterized in that the elastic element is installed with preliminary compression. 3. The device according to any one of claims 1 or 2, characterized in that the means for restricting the movement of the head part relative to the body is made in the form of rods that close the connection of the head part with the body. 4. The device according to any one of claims 1 or 2, characterized in that the means for restricting the movement of the head part relative to the body are made in the form of a radial groove on the outer surface of the body, a radial groove in response thereto, on the inner surface of the head part and movably mounted in the groove formed by the grooves rolling balls.

Images