CN2088124U - Multi-functional pile-enlarging device of pipe-sinking pouring pile - Google Patents

Abstract

The utility model relates to a multi-functional pile-enlarging device of pipe-sinking pouring pile equipped with an outer tube which can move axially and an internal sleeve tube which transferres the acting force. The utility model is suitable for the piling art work by hammer method, static pressure method and vibrating method, as well as the construction of calabash shape pile enlarged lengthwish, and pedestal pile with bottom enlarged. The concrete pour smoothly during the process of piling.

Description

Multi-functional pile-enlarging device of pipe-sinking pouring pile

The utility model relates to a kind of expansion stake device that enlarges the pile body or the expansion stake end along length.

Chinese patent 89217296.7 provides at the bottom of a kind of not only can enlarge but also can enlarge the expansion stake device of pile body any part, constitute by sleeve pipe, additional sleeve, flap valve, limiting plate and moveable hinge, wherein additional sleeve is fixedly set in the outside of tube ends, both flush the end, be connected with moveable hinge between flap valve and the sleeve pipe, the flap valve inboard is welded with the limiting plate of a double as reinforcing rib.Auto-closing when flap valve is marked with under the concrete situation inlet pipe at sleeve pipe in soil layer inlet pipe or sleeve pipe, when carry on the sleeve pipe or sleeve pipe in when carrying on being marked with under the concrete situation, flap valve opens automatically.This apparatus structure is simple, the pile quality height.Its defective is:

(1), be only applicable to vibratory drilling method and build stake, inapplicable for other piling methods;

(2), the flap valve amplitude of opening is subjected to structural restriction, when coming down in torrents concrete, flap valve still tilts to the axle center, the concrete that comes down in torrents is subjected to the flap valve resistance, causing comes down in torrents has some setbacks, an operating efficiency is built in influence.

The purpose of this utility model is to provide come down in torrents smoothness and construct tube-sinking cast-in-situ pile for hammering method, static pressure method, vibratory drilling method and be all suitable multi-functional tube-sinking cast-in-situ pile and expand a stake device of a kind of concrete.

The drawing explanation:

Fig. 1 is that a kind of multi-functional tube-sinking cast-in-situ pile expands stake apparatus structure schematic diagram.Be labeled as among the figure:

1---the punching block pipe

2---outer tube

21---open the axial slide on outer tube

3---pin

5---flap valve

6---connecting rod

71,72,73---hinged.

Fig. 2 is the partial sectional view of Fig. 1, and 4 for being fixed on the inner sleeve of outer tube 2 inboards among the figure.

Fig. 3 is this expansion stake device flap valve 5 closure state figure.

Below in conjunction with description of drawings, describe the particular content of this programme in detail.

The design's multi-functional tube-sinking cast-in-situ pile expands the stake device, it is significant improvement to Chinese patent 89217296.7 schemes, be applicable to that hammering method, static pressure method, vibratory drilling method construct sinking concrete filling pile, can build up the cucurbit shape stake that enlarges pile body along length, or enlarge the stake expanded bore pile at the end.As shown in Figure 1 and Figure 2, this expansion stake device comprises punching block pipe 1, outer tube 2, pin 3, inner sleeve 4, flap valve 5, connecting rod 6 and hinged 71,72,73.Wherein, adopt between outer tube 2 and the punching block pipe 1 and open at several axial slides 21 on the outer tube 2 and on being welded on punching block pipe 1 several and sell 3 and be connected, the inboard of outer tube 2 bottoms is provided with an inner sleeve 4 that is used for transfer function power, be connected with hinged 71 between the bottom of flap valve 5 middle parts and outer tube 2, one end of connecting rod 6 is connected with flap valve 5 upper ends by movable hinged 72, and the other end of connecting rod 6 adopts hinged 73 to be connected with punching block pipe 1.

Hinged 71,73 are on the sustained height respectively, and uniformly-spaced arrange, flap valve 5 adopts 3 or 4, and connecting rod 6 and axial slide 21 are selected suitable length for use, the flap valve 5 after opening, and its inboard must be on the extended line of side bus in the punching block pipe 1.The arrangement of inner sleeve 4 is shown in Fig. 2.

The pile-formation process process is identical with Chinese patent 89217296.7.

Pile crown diameter D after the expansion can estimate with following formula:

$D=\frac{\sqrt{\mathrm{n\Σhi}+\frac{\mathrm{\Σhi}}{n}}}{\mathrm{\Σhi}}\·d\·n\mathrm{(cm)}$

N in the formula---expand the end and put forward pipe pressure pipe number of repetition

Pipe height (m of unit) is carried in hi---each time

D---punching block bore (cm of unit)

η---enhancement coefficient, η=1.0～1.1

When punching block pipe 1 presses down, relatively move between outer tube 2 and the punching block pipe 1, inner sleeve 4 contacts with punching block pipe 1, and transfer function power avoids pin 3 to bear load.Fig. 3 is this expansion stake device flap valve 5 closure state figure.

With prior art relatively, the advantage of this expansion stake device is:

1, function increases, and applicability is wide, except that being applicable to the vibratory drilling method pile, also is applicable to hammering method, static pressure method pile-formation process.

2, after flap valve 5 opens, flap valve 5 inboard with punching block pipe 1 inboard in line, the concrete smooth and easy non-resistance that comes down in torrents.

Claims (4)

1, a kind of multi-functional tube-sinking cast-in-situ pile expands the stake device, comprise the punching block pipe, outer tube, flap valve and hinged, it is characterized in that: this expansion stake device is by punching block pipe 1, outer tube 2, pin 3, inner sleeve 4, flap valve 5, connecting rod 6 and hinged 71,72,73 form, wherein adopt between outer tube 2 and the punching block pipe 1 and open at several axial slides 21 on the outer tube 2 and on being welded on punching block pipe 1 several and sell 3 and be connected, inboard, outer tube 2 bottom is provided with an inner sleeve 4 that is used for transfer function power, be connected with hinged 71 between flap valve 5 middle parts and outer tube 2 bottoms, one end of connecting rod 6 is connected with flap valve 5 upper ends by hinged 72, and its other end adopts hinged 73 to be connected with punching block pipe 1.

2, according to the expansion stake device of claim 1, it is characterized in that: flap valve 5 adopts 3 or 4.

3, according to the expansion stake device of claim 1, it is characterized in that: hinged 71 and hinged 73 are on the sustained height respectively, and uniformly-spaced arrange.

4, according to the expansion stake device of claim 1, it is characterized in that: connecting rod 6 and axial slide 21 are selected suitable length for use, and flap valve 5 inboards after opening must be on the extended line of side bus in the punching block pipe 1.