Device for the formation of bored piles

 

(57) Abstract:

The invention relates to industrial and civil construction and can be used in the construction in rocky soil pile foundations and deep foundations. The invention consists in that the device for the formation of bored piles, including suspended to the base car guide with mounted therein an electric motor connected to the drilling tool rotary, electric motor associated with a drilling tool, made in the form located on its Central axis of the bit, through the Central shaft of the gearbox, which is kinematically connected to the peripheral walls, at least part of which is fixed additional drilling tools in the form of peripheral bits, and the gearbox is mounted the mechanism of rotation of its body fixed relative to the housing of the motor of the Central toothed wheel, connected to slave peripheral gears shafts and located underneath the Central pinion, which is connected via parasitic gear with a driven gear fixed on the peripheral shafts mounted in the bearings of the cor is th bit is not less than 0.05 radius of rotation of the Central bit and installed with adjustable depending on the category of a ground offset value relative to his height. In this case, the housing may be made cylindrical prismatic go with a vertical through-channels, isolated from the body cavity of the gears. The device extends the technological capabilities and provides increased pace of work on the education of bored piles. 1 C. p. F.-ly, 2 Il.

The invention relates to industrial and civil construction and can be widely used in construction in rocky soil pile foundations and deep foundations.

The closest known is a device for the formation of bored piles, including suspended to the base car guide with mounted therein an electric motor connected to the drilling tool rotational steps (see ed.St. USSR N 1350253, CL E 02 D 5/38, 1985).

The known device has low productivity due to the adopted process, inherent in its design.

The objective of the invention is to increase productivity by reducing process downtime.

This is achieved by the fact that the device for the formation of bored piles, including suspended to the base machine voltage, the electric motor is connected with the drilling tool, made in the form located on its Central axis of the bit, through the Central shaft of the gearbox, which is kinematically connected to the peripheral walls, at least part of which is fixed additional drilling tools in the form of peripheral bits, and the gearbox is mounted the mechanism of rotation of its body fixed relative to the housing of the motor of the Central toothed wheel connected with the slave peripheral gears shafts and located underneath the Central pinion, which is connected via parasitic gear with a driven gear fixed on the peripheral shafts mounted in the bearings of the gear case, moreover, the peripheral bit installed with an overlap in terms of the circle of rotation of the Central bit is not less than 0.05 radius of rotation of the Central drill bit with adjustable depending on the category of a ground offset relative to his height. When the housing is cylindrical or prismatic with a vertical through-channels, isolated from the cavity of the housing.

In Fig. 1 shows a General view of the device the Finance bored piles is a suspension unit and contains suspended to the base car guide 1 with mounted therein an electric motor 2, connected to the drilling tool rotational steps. The electric motor 2 is connected with the drilling tool, made in the form located on its Central axis bit 3, through the Central shaft 4 of the gear 5, which is kinematically connected to the peripheral shafts 6, at least part of which is fixed additional drilling tools in the form of peripheral bits 7. The gear 5 is mounted the mechanism of rotation of its body fixed relative to the housing of the electric motor 2 of the Central toothed wheel 8 connected with the driven gears 9 peripheral shafts and located underneath the Central pinion 10, which is connected via parasitic gear 11 with the driven gear 12, fixed on the peripheral shaft 13 mounted in bearings of the housing 5. Peripheral bit 7 installed with an overlap in terms of the circle of rotation of the Central bit 3 is not less than 0.05 radius of rotation of the Central bit 3, with adjustable depending on the category of a ground offset value relative to his height. When the housing 5 is made of a cylindrical or prismatic with a vertical through-channels 16 isolated from the cavity of the spring Assembly established the basic machine in position for the formation of wells under the bored pile. Mounted on the guide motor 2 transmits drilling tools such as drill bits 3 and 7 rotational motion. The rotation is transmitted to the bit 3 through the Central shaft 4 of the gear 5, which is kinematically connected with the peripheral rollers 6. The housing 5 is driven by a motor 2, the transmitting torque of the Central toothed wheel 8 connected with the driven gears 9 peripheral shafts. Thus, the peripheral bit 7 set with overlap in terms of the circle of rotation of the Central bit 3 is not less than 0.05 radius of rotation of the Central bit 3, simultaneously perform both rotational movement about their axes in the direction of rotation of the bit 3 and the rotational movement about the axis of the bit 3. The possibility of regulation, depending on the type of soil the amount of relative displacement of bits 3 and 7 in height provides optimum performance conditions. This also contributes to the implementation of rotating in the direction of rotation of the bits of the housing 5 of a cylindrical or prismatic with a vertical through-channels 14, isolated from the cavity of the housing. The issue developed breed is the

Thus, the proposed embodiment of the device greatly enhances its technological capabilities and provides increased pace of work on the education of bored piles.

1. Device for the formation of bored piles, including suspended to the base car guide with mounted therein an electric motor connected to the drilling tool rotational steps, characterized in that the electric motor is connected with the drilling tool, made in the form located on its Central axis of the bit, through the Central shaft of the gearbox, which is kinematically connected to the peripheral walls, at least part of which is fixed additional drilling tools in the form of peripheral bits, and the gearbox is mounted a rotation mechanism with stationary relative to the housing of the motor of the Central toothed wheel connected with the slave peripheral gears shafts, located underneath the Central pinion, which is connected via parasitic gear with a driven gear fixed on the peripheral shafts mounted in the bearings of the gear case, and peripheral bit installed with an overlap in terms of HN with the possibility of regulation depending on the category of a ground offset value relative to his height.

2. The device under item 1, characterized in that the housing is cylindrical or prismatic with a vertical through-channels, isolated from the cavity of the housing.

 

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FIELD: building structures, particularly shallow foundations.

SUBSTANCE: method involves creating well by ground excavation, introducing preparatory portion of hardening material in well hollow including calculated part of hardening material; arranging explosive charge in lower well part; securing explosive charge; blowing explosive charge up to create cavity for widened foundation post part; crushing and widening above calculated part after explosion; introducing additional portion of hardening concrete in well up to 4/5 of well height; filling it with calculated part of above material portion. Concrete for casting is used as preparatory hardening material.

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Pile // 2263746

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FIELD: building, particularly to create bored piles in cased wells during building and building structure foundation erection.

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