Device for sinking wells and expansion of existing holes

 

The invention relates to a device for sinking wells and expansion of existing holes and can be used in construction, for example, when laying underground utilities. The device includes an actuator, connected by an intermediate shaft with a working body containing sequentially deployed and installed eccentric relative to the axis of rotation of the conical and cylindrical rollers. Work the body in the form of sequentially installed on the axis of rotation of the removable modules - module-reverse, driver wells, module forward stroke and tip. The shaper is well made of cylindrical rollers of the same diameter. Modules forward and reverse moves are made of cylindrical rollers of different diameter or tapered rollers, with the rollers of the modules installed in the order of decreasing diameters in the direction of the ends of the working body. The invention provides improved performance driving. 2 C.p. f-crystals, 1 Il.

The invention relates to a device for sinking wells and expansion of existing holes and can be used in construction, for example, when laying underground communications is practical rinks, installed eccentric one after the other on a common shaft (see swarsensky Century as making holes in soil by drifting. - Novosibirsk. 1982.- S. 25; Bobylev L. M., Bobylev, A. L.. Prokhorenko, because the borehole expanders in the field of trenchless technology. - Robt.- 2001.- No. 5.- S. 36-39).

During the rotation and axial feed shaft working body rollers obkatyvalisj on their faces, forming the walls of the well. Each subsequent rink is rolled in the previous rink area of the borehole, increasing the diameter of the latter. When you reverse the drive device working body out of the hole.

During the reverse course of this device is its grip, carried out through the trailing edge of the last ice rink, slightly, so that when the output from the well working body is prone to slippage, which significantly complicates and slows down its withdrawal from the well.

In addition, hard molded design of the known device does not allow its Assembly/disassembly directly on the site that in certain situations, for example, if necessary, rapid increase or decrease the diameter of the hole, requires the suspension and, ultimately, leads to an increase will continue the work with the body, consisting of deployed and installed eccentric relative to the axis of rotation cone for forward movement and cylindrical to reverse rollers (see swarsensky Century as making holes in soil by drifting. - Novosibirsk. 1982.- S. 25-26).

The axis of the rollers deployed in the transverse and offset from the longitudinal plane relative to the axis of the working body so that the rotation of the latter rollers roll along a helical line, and the working body is screwed into the ground, forming the well. When reversing device special reversing rollers, in a certain way located relatively to the axis of rotation, move along borehole walls on the opposite helix, whereby the efficiency of the output device from the well increases.

In practice, however, the walls of the well depending on the type and humidity of the soil in varying degrees, tend to lose form, “float” and fall off, so when you reverse the course of the working fluid reversing rollers of cylindrical shape often gets jammed that causes it to stop sinking and wasteful energy loss, reduce productivity and damage the device.

In addition, in the construction of the known device does not provide the possibility of operation the TA, etc. operations), which, given the time needed to transport the device to the shop and back increases the duration of penetration.

The present invention is to improve the performance of penetration by eliminating slippage and jamming of the device when the output from the well and allow its rapid Assembly/disassembly directly at the place of work.

The problem is solved due to the fact that the device for sinking wells and expansion of existing holes, including the drive, connected by an intermediate shaft with a working body containing sequentially deployed and installed eccentric relative to the axis of rotation of the conical and cylindrical rollers, the working body composed of sequentially installed on the axis of rotation of the removable modules - module-reverse, driver wells, module forward stroke and tip, while the shaper is well made of cylindrical rollers of the same diameter, and the modules in the forward and backward moves is made of cylindrical rollers of different diameter or tapered rollers, moreover rollers modules are installed in order of decreasing diameters in the direction of the two rinks each.

The tip of the working body, depending on the soil type and/or type of work performed in the form of a cone, drill.

The intermediate shaft is made telescopic or consists of sochlenennykh rods, providing the possibility of increasing its length.

The drive motor is mounted on rails for movement thereon in the direction of the well.

The drawing shows a General view of the device.

The device comprises an engine 1, guide 2, the intermediate shaft 3, a working body of the handpiece 4, module forward stroke 5, driver wells 6 and module-reverse 7.

The device operates as follows.

Before you begin in the center of the mouth of future wells are stuck in the ground, the tip 4 of the working body, connecting the past, directly or through an intermediate shaft 3 to the engine 1 (engine can be used a normal drill), and then by pressing with some force on the working body in the longitudinal direction, turn on the engine and perform the initial drilling of the working body in the ground.

During the rotation of the working body of rollers stroke module 5 slide on their faces, rolling well, and at the same time lane is formirovala wells 6 form and seal the borehole wall.

To improve the accuracy of penetration and maintenance of facilities operation and engine mounted on the rails 2, the length of which is equal to the length of the at least one rod of the intermediate shaft. With the deepening of the working body in the borehole, the engine stopped, disconnect it from the intermediate shaft and away from guides back then by connecting to the intermediate shaft 3, at least one extension rod increasing its length, is connected to the shaft of the engine and continue driving.

For the conclusion of the working body of the wells reversiruyut engine device. During the rotation of the working body in the opposite direction rollers module reverse 7 roll for unwinding in the direction of the wellhead helix, providing a loosening of the working body from the well. The running rollers module 7 in the form of a truncated cone, the smaller base of which is directed towards the wellhead avoids jamming of the working body at the back of the course even in the presence of defects wells (deformation and vplyvania walls, shattering the ground and others). However, the equality of the large diameters of the bases of the reversing rollers the diameter of the hole eliminates prokelisia working body easily removable from the functional modules by reducing the unproductive time of its Assembly/disassembly provides performance improvements sinking.

It is known that in practice, the structure and properties of the soil along the borehole may change considerably. As a consequence, in the process of drilling is often required to change the configuration of the working body (shape, size and relative positions of rollers, the type of tip, etc). In contrast to the known drifters, the construction of the device enables rapid modification of the working body in accordance with changing conditions penetrations directly in the workplace, which ultimately increases the productivity of penetration.

When laying underground utilities traversed in the well, usually you want to start a cable, wire or pipe. To perform the specified operation modules a forward stroke and driver wells may be excluded from the working body and the tip is mounted a gripping device, which in the well during reverse motion of the working body is wound to the desired object. This reduces the energy consumption of the working body and increases the efficiency of the device as a whole.

Technical and technological possibilities of the inventive device the following example illustrates its practical application.

Socratease of rod length 750 mm each.

The purpose of the operations: directed rectilinear puncture soil (loam) with a length of 12 m below the road at a depth of 3 m

After determining the direction of the bore, the actuator has been switched on and the initial pressing of the operator of the working body of the latter securely driving themselves into the ground, moving a rod of the intermediate shaft and the drive, without the application of external effort.

Test results:

- vertical and horizontal displacement of the centre of the well from the calculated direction of the length of penetration did not exceed 10 mm:

the time of penetration with the recording process stops 75 min;

- ROP - 12 m/h at engine speed of 60 rpm:

- the entire length of the drilling borehole diameter not less than 80 mm, bore free from soil and has a dense wall.

Claims

1. Device for sinking wells and expansion of existing holes, including the drive, connected by an intermediate shaft with a working body containing conical and cylindrical rollers, consistently deployed and installed eccentric relative to the axis of rotation, characterized in that the working body composed of sequentially installed on the axis vrei this shaper wells made of cylindrical rollers of the same diameter, and the modules in the working and return strokes is made of cylindrical rollers of different diameters or tapered rollers, with the rollers of the modules installed in the order of decreasing diameters in the direction of the ends of the working body.

2. Device for sinking wells and expansion of existing holes under item 1, characterized in that the tip of the working body in the form of a drill.

3. Device for sinking wells and expansion of existing holes under item 1, characterized in that the tip of the working body in the form of a conical nozzle.

 

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