RU12175U1 - DEVICE FOR DIPPING PIPES IN SOIL - Google Patents

Abstract

1. A device for immersing pipes in the soil, containing a percussion mechanism with a striker and a working body and an adapter made of bulk material and placed in a clogged pipe restricting the adapter in the radial direction, characterized in that it is equipped with a piston limiting the adapter in the axial direction and installed in a clogged pipe with the possibility of interaction with the working body. 2. The device according to claim 1, characterized in that the piston is stationary connected to the working body. The device according to claim 1, characterized in that the piston is equipped with an extension cord fixedly connected to it, which is covered by an adapter. The device according to claim 1, characterized in that the working body is covered by an adapter. The device according to claim 3, characterized in that the adapter is located behind the percussion mechanism, the tail of which is connected to the piston extension.

Description

Device for immersing pipes in the ground

The proposed utility model relates to the field of construction equipment and is intended for immersion and drawing into the ground pipes for various purposes (pipelines, piles, casings, etc.).

Known devices for driving pipes into the ground, including a percussion mechanism and a transmission link (adapter), which transfers the energy of the impact from the percussion mechanism to the pipe. In this case, the adapter can be made in the form of a sleeve (see AS USSR No. 607902, E02F 5/18, BI No. 19, 1978) or in the form of a composite sleeve with internal and external conical surfaces, which is made of disks fastened by fixing elements (see AS USSR No. 1097762, E02F5 / 18, BI No. 22, 1984).

Known devices have the following disadvantages. The impact energy is transferred directly to the end face of the pipe to be hammered and concentrated on a small area, and the transmission

the blow is hard. This leads to the destruction of the end of the pipe and does not allow clogging non-metallic pipes, and also complicates the clogging of metal due to technologically unacceptable deformations of the end. In addition, adapters are difficult to perform. When pipes are clogged with these devices, a lot of noise is generated, that is, working conditions worsen and environmental requirements are violated. In addition, the transmission of shock through the rear end of the pipe leads to the fact that the shock impulse, passing along its entire length, is substantially damped, and this significantly reduces the possibility of clogging of long pipes and pipes of large diameter.

The closest analogue in technical essence and the achieved result is a pipe clogging device (see brochure of the company FRANKIPFAHL BAUGESELLSCHAFT M.V.N. - a copy is attached), containing a percussion mechanism (coper) with a freely falling woman, which is simultaneously a drummer and a working body mounted on a cable and striking the adapter - made in the form of a cork made of dry concrete or gravel, placed in a clogged pipe.

When the pipes are clogged with this device, shock transmission is less rigid than through a metal adapter, since the shock pulse is transmitted to the pipe through bulk material over a large area of the side surface of the tube. In this case, the impact is transmitted almost directly to the front end of the pipe that is introduced into the soil without loss along its length, which is much more efficient than through its rear end. Due to the transmission of the shock through the bulk material of the adapter, the noise arising during clogging is largely suppressed.

This solution has the following disadvantages. The direct transfer of shock from the headstock to an adapter made of bulk material allows only pipes with an inner diameter close to the diameter of the head to be driven in. Due to the lack of guides that center the drummer coaxially to the clogged pipe, the drummer swings and contacts the pipe walls, which prevents clogging of non-metal pipes due to the possibility of damage. The device allows you to hammer pipes only vertically downwards and cannot hammer them obliquely or horizontally, since the drummer (woman) makes a working stroke (falls) under the action of

dead weight, not forced. In addition, there is no possibility of drawing pipes into the ground.

The technical problem solved by the proposed utility model is the expansion of the scope, that is, the achievement of the ability to immerse pipes of various

lateral dimensions, made of various materials, not only vertically, but also obliquely and horizontally, and tighten them into the ground. The problem is solved by introducing a rigid intermediate element, restricting it; its adapter in the axial direction and transmitting the impact from the working body to the adapter, eliminating the contact of the hammer with the hammer pipe and the possibility of placing the adapter behind the shock mechanism.

The problem is solved in that the device for immersing pipes in the ground, containing a percussion mechanism with a striker and a working body and an adapter made of bulk material and placed in a clogged pipe restricting the adapter in the radial direction, it is proposed to provide a piston limiting the adapter in the axial direction and installed in a clogged pipe with the possibility of interaction with the working body. Piston

excludes direct contact of the working body with the bulk material of the adapter and ensures the transfer of shock load on the entire surface of the adapter, regardless of the transverse size and configuration of the working body. Due to this, it becomes possible to use a percussion mechanism for immersing pipes into the ground, the striker of which is placed inside it, for example, a jackhammer. The drummer of such a mechanism does not come into contact with the clogged pipe and does not damage it, which allows clogging non-metallic pipes. In addition, the drummer of such a mechanism makes a forced stroke, and not under the influence of its own weight, which makes it possible to immerse pipes not only vertically downwards, but also horizontally and obliquely. Since the diameter of the piston may differ from the diameter of the working body, it becomes possible clogging of pipes with an inner diameter of both large and smaller diameter of the working body. In addition, the presence of a piston makes it possible to stir the adapter behind the percussion mechanism while maintaining the direction of the blows forward along the axis of the device, and this allows the pipes to be pulled into the ground for

moving forward percussion mechanism. All this extends the scope of the device.

The piston can be fixedly connected to the working body. This increases the efficiency of transmission of shock from the working body to the adapter.

The piston may be provided with an extension cord fixedly connected to it, which is enclosed by an adapter. This facilitates the fixation and centering of the working body of self-propelled shock devices (pneumatic punches) in a clogged pipe, as the extension cord is crimped in the adapter.

The working body may be covered by an adapter. It also facilitates the fixation and centering of the working body relative to the clogged pipe, which is important when using self-propelled percussion devices (pneumatic punch) as a percussion mechanism. In addition, the longitudinal dimensions of the device are significantly reduced, which increases the convenience of its use in the cramped conditions of laying underground passages.

The adapter can be placed behind the percussion mechanism, the tail of which is connected to the extension

piston. This allows the pipes to be pulled into the ground behind the pneumatic punch moving in front.

The essence of the proposed utility model is illustrated by examples of specific performance and drawings, where:

-Fig. 1 shows a general view of a device for immersing pipes in soil with a piston in the form of a disk;

-Fig. 2 - the same with a mushroom-shaped piston;

-Fig. 3 - the same with the piston, made at the same time with the working body of the percussion mechanism;

-Fig. 4 - the same with a piston equipped with an extension cord, which is covered by an adapter;

-Fig. 5 - the same with the working body of the percussion mechanism covered by the adapter;

-Fig. 6 is a general view of a device for tightening pipes into the ground.

The proposed device for immersing pipes (metal, plastic, asbestos-cement, casings, piles, etc.) in the soil consists of a percussion mechanism 1 (Fig. 1, these can be known reversible and non-reversible pneumatic punches, jack hammers and concrete breakers with pneumatic and other types of drives, diesel hammers and

etc.), inside of which with the possibility of forced axial movement along the guides, for example, inside the body of the percussion mechanism 1, a drummer 2 is installed, which interacts with the working body 3. Next, a piston 4 is placed forward along the axis of the device, limiting the adapter 5 in the rear axial direction made of bulk material, such as sand or soil. The adapter 5 is placed inside the clogged pipe 6, limiting it in the radial direction. The piston 4 is made in the form of a disk with a recess for abutting the end face of the working body 3. The piston 4 can be fixedly connected to the working body 3. The immobility of the connection can be ensured by jamming the working body 3 in the bore of the piston 4 (figure 2), by performing the piston 4 at the same time with the working body 3 (Fig.Z) or in another way, for example, by welding. When using a self-propelled impact device

(pneumatic punch) as a percussion mechanism 1 the role of the working body 3 performs the body of the pneumatic punch (figure 2, 46). The piston 4 may be made in a Fibo shape (figure 2) with a conical hole in the part of a smaller diameter, while the angle of inclination of the generatrix of the conical hole is less

self-jamming angle, due to which the working body 3 of the shock mechanism 1 is fixedly installed (stuck) in the conical hole. In the latter case, the impact mechanism 1 is placed inside the pipe 6, and its tail part 7 is installed in the centering support 8. The piston 4 can also be made in the form of a flat ring (Fig. 5). An extension cord 9 can be fixedly connected to the piston 4 (FIG. 4). The fixed connection of the piston 4 and the extension 9 can be carried out by performing them at the same time (figure 4) or by fixing. In the presence of an extension cord 9, there is no need to use a centering support 8, which receives recoil force, since the extension cord 9 performs its functions, and, in addition, the required length of the adapter 5 and, accordingly, the dimensions of the device are reduced. In the General case, the length of the adapter 5 should be at least 5-6 of its diameters. If the adapter 5 has an annular cross section (Figs. 4-6), then its length can be reduced by reducing the volume of compressible bulk material and the corresponding increase in stresses. If you directly install the working body 3 so that it is covered by the adapter 5 (figure 5), limited by the piston 4,

then the function of the extension cord 9 is performed by the working body 3 itself and this, in addition to reducing the dimensions, simplifies the entire structure, creating the same positive effect in the work. Placing the adapter 5 behind the impact mechanism 1, the tail of which is connected to the extension 9 of the piston 4, covered by the adapter 5 (Fig.6), allows you to tighten the pipe 6 into the ground.

When vertically and inclinedly clogging large pipes 6 and, accordingly, when using heavy impact mechanisms 1, for example, diesel hammers, the latter can be mounted on a pile driver (not shown in the figure).

The proposed device operates as follows.

An adapter 5 (FigL-3) made of granular material is placed in the pipe 6, then a piston 4 is installed, through which the hammer 2 is struck through the working body 3 of the percussion mechanism 1 (Fig. 1), which moves axially inside the specified percussion mechanism 1. Under the influence of axial impacts, the piston 4 compresses the adapter 5 in the axial direction. Since the bulk material of the adapter 5 in the radial direction is limited by the inner surface of the pipe 6, the effect

dilatancy leads to the emergence of significant radial forces of the lateral dimension and, accordingly, significant friction forces distributed but on the inner side surface of the pipe 6. Due to this, shocks through the adapter 5 are transmitted to the side surface of the pipe 6 and it moves in the ground in the direction of impact. The stable state of the adapter 5 is ensured by the support of the soil entering the internal cavity of the pipe 6 through its open front end. The recoil forces arising from the operation of the impact mechanism 1 can be perceived by the effort of the working operator (Figs. 1, 3 — the operator is not shown in FIG.), Mounted in the pipe 6 by the centering support 8 (Fig. 2), and also by the extension cord 9 ( 4), or by the working body 3 (the body of the percussion mechanism 1 - Figs. 5 and 6) due to friction forces along their lateral surface arising due to compression of the adapter 5 (Figs. 4, 5) or soil (Fig. 6) )

In the case of thin-walled, especially

non-metallic pipes 6, which can be damaged by significant radial forces of the lateral thrust, it is recommended that the pipe 6 be mounted outside in place

placing adapter 5 bandage 10, preventing its destruction (Fig. 1).

To tighten the pipes 6 into the ground, the extension cord 9 of the piston 4 is attached to the tail part 7 of the impact mechanism I, in fact, to the tail part of the working body 3 (Fig.6). In this case, the percussion mechanism 1, moving in the ground, draws the pipe 6 along with it into the ground. The stable state of the bulk material of the adapter 5 is provided by the soil entering the internal cavity of the pipe 6 (Fig.6).

From the above description it is clear that the proposed technical solution allows you to expand the possibilities of using the device, that is, pipes 6 of various transverse sizes, made of various materials, not only vertically, but also obliquely and horizontally, and draw them into the ground.

Claims (5)

1. A device for immersing pipes in the soil, containing a percussion mechanism with a striker and a working body and an adapter made of bulk material and placed in a clogged pipe restricting the adapter in the radial direction, characterized in that it is equipped with a piston limiting the adapter in the axial direction and installed in a clogged pipe with the possibility of interaction with the working body.  2. The device according to claim 1, characterized in that the piston is stationary connected to the working body.  3. The device according to claim 1, characterized in that the piston is equipped with an extension cord fixedly connected to it, which is covered by an adapter.  4. The device according to claim 1, characterized in that the working body is covered by an adapter. 5. The device according to claim 3, characterized in that the adapter is located behind the percussion mechanism, the tail of which is connected to the piston extension.