CN203685036U

CN203685036U - Transverse widener

Info

Publication number: CN203685036U
Application number: CN201320880417.2U
Authority: CN
Inventors: 钱寅星; 赵斌; 翁志坚
Original assignee: China Railway 24th Bureau Group Co Ltd; Fujian Railway Construction Co Ltd of China Railway 24th Bureau Group Co Ltd
Current assignee: China Railway 24th Bureau Group Co Ltd; Fujian Railway Construction Co Ltd of China Railway 24th Bureau Group Co Ltd
Priority date: 2013-12-30
Filing date: 2013-12-30
Publication date: 2014-07-02
Anticipated expiration: 2023-12-30

Abstract

The utility model discloses a transverse widener. The transverse widener is provided with a rotary shaft and is characterized by also comprising a turntable, a soil cutting arm and a telescopic arm; the rotary shaft drives the turntable to rotate; the outer profile of the soil cutting arm is arc; the fixing end of the soil cutting arm is hinged, connected and fixed with the turntable by a hinge shaft; the other end of the soil cutting arm is connected with the telescopic end of the telescopic arm by a hinge shaft; the fixing end of the telescopic arm is fixedly connected with the turntable. The transverse widener has the advantages that the transverse widener is simple in structure, horizontal hole widening operation can be performed at any position of a pile body, the soil cutting arm can be outwards unfolded under the driving of the telescopic arm to widen the radius according to needs, the stress structure of the soil cutting arm is stable without easy damage and the hole widening efficiency is high.

Description

Laterally widen device

Technical field

The utility model relates to Counterboring apparatus, is specifically related to a kind of for expanding the laterally widen device of castinplace pile pile body or stake bottom.

Background technology

Prefabricated tubular pile is that a kind of speed of application is fast, the stake type of reliable in quality, but for piling difficulty in the stratum such as silt and flour sand, be difficult for being pressed onto required stratum, thereby can not give full play to the effect of its geologic structure middle-end load, larger bearing capacity of single pile can not be provided, in many regional highrise buildings, cannot promote the use of, and have to adopt the bored pile that speed of application is slow, cost is high.In order to improve the bearing capacity of bored pile, reaming is carried out at the stake end to castinplace pile in the stake type of particular design.

The device that can carry out reaming at present at the bottom of grout pile, mainly to be rotated to realize reaming by the blade can in the vertical direction opening is set on drilling rod, a kind of reaming bit described in patent CN03223512.7, this device comprises drilling rod and drill bit, two aerofoil profiles are installed on drill bit and bore sheet, it is hinged by pin and drill bit that aerofoil profile is bored sheet, and its cutting edge is angled with vertical line under nature, when boring, this aerofoil profile brill sheet rotates under the centrifugal action producing and automatically opens at drilling rod, original aperture is further formed to expanded hole.The shortcoming of this type of reaming bit is: in drilling rod rotary course, it is uncontrollable that its aerofoil profile is bored sheet opening angle, adjusts size difficulty, cannot form the expanded hole of different-diameter, and its to bore sheet be mechanical type blade, stressed poor, more fragile.

Summary of the invention

The purpose of this utility model is according to above-mentioned the deficiencies in the prior art part, a kind of laterally widen device is provided, this laterally widen device is by being laterally hinged with the fixed end of cutting native arm to be fixed on turning cylinder rotating disk, the other end and telescopic arm are hinged, under the driving of telescopic arm, make to cut native arm and there is certain activity space, can adjust as required the required radius of widening.

The utility model object realizes and being completed by following technical scheme:

A kind of laterally widen device, described laterally widen utensil has a turning cylinder, described in it is characterized in that, widening device also comprises rotating disk, cuts native arm and telescopic arm, wherein said turning cylinder drives described turntable rotation, it is described that to cut native arm outline curved, its fixed end is articulated and connected fixing by hinge and described rotating disk, its other end is articulated and connected by the telescopic end of hinge and a telescopic arm, and the fixed end of described telescopic arm is fixedly connected with described rotating disk.

Described cutting has some compact arranged cutting teeths on native arm outline.

Described outline arc length of cutting native arm is not more than 1/3 of described base outline girth.

The described pin joint of cutting native arm and described rotating disk is positioned at described disk edge.

The pumping plant that described telescopic arm is connected by hydraulic jack and with described hydraulic jack rodless cavity forms, the cylinder body of described hydraulic jack is fixed on described rotating disk as the fixed end of telescopic arm, the piston rod end of described hydraulic jack as telescopic end with described in cut native arm one end and be articulated and connected.

Described telescopic arm is mechanical retractable arm.

The utility model has the advantages that, this laterally widen device is simple in structure, can carry out horizontal ream operation in pile body any position, under telescopic arm drives, cut native arm and can outwards launch thereupon, widen radius to adjust as required, cut native arm force structure stable, not fragile, and reaming efficiency is higher.

Brief description of the drawings

Fig. 1 is laterally widen device floor map in the utility model;

Fig. 2 is laterally widen device elevational schematic view in the utility model;

Fig. 3 has two floor map of cutting native arm on laterally widen device in the utility model;

The inverted T-shaped pile schematic diagram that Fig. 4 applies for laterally widen device in the utility model.

Detailed description of the invention

Feature of the present utility model and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:

As Fig. 1-4, in figure, mark 1-12 is respectively: rotating disk 1, hinge 2, cut native arm 3, cutting teeth 4, hinge 5, piston rod 6, hydraulic jack 7, pumping plant 8, turning cylinder 9, pile body 10, enlarged body 11, telescopic arm 12.

Embodiment: the present embodiment is specifically related to a kind of laterally widen device, and its principle is: in conjunction with the power part of existing rotary drilling rig, design a kind of special horizontal drill bit, enable to carry out the operation of widening of stake bottom, hole.

As shown in Figure 1, 2, this laterally widen utensil has a turning cylinder 9, this turning cylinder 9 rotary drilling rig power part existing with its top connects to obtain motive power, the bottom of turning cylinder 9 is a rotating disk 1 in the form of annular discs, turning cylinder 9 is for driving rotating disk 1 to rotate, and the external diameter of this rotating disk 1 is identical with bored hole stake diameter, on the upper surface of rotating disk 1 or soffit, be laterally horizontally disposed with one and cut native arm 3, this fixed end of cutting native arm 3 is hinged fixing by hinge 2 and rotating disk 1, both pin joints are positioned at the edge of rotating disk 1, the movable end of cutting native arm 3 is hinged fixing by hinge 5 and the telescopic end of telescopic arm 12, the fixed end of telescopic arm 12 and rotating disk 1 fix, telescopic arm 12 extending or shorten, there is certain extending space, therefore this movable end of cutting native arm 3 is under the driving of telescopic arm 12, can be rotated around hinge 2, cut the distance of native arm 3 movable ends apart from rotating disk 1 central point to change, be widening radius and can adjusting under the driving of telescopic arm 12 of laterally widen device.

As shown in Figure 1, 2, this outline of cutting native arm 3 is curved, and its outline side has compact arranged cutting teeth 4, in order to cutting soil; In the present embodiment, the outline arc length of cutting native arm 3 is 1/3 of rotating disk 1 circumference, certainly also can suitably adjust its outline arc length according to the required radius of widening of reality.

As shown in Figure 1, 2, the body of rod of telescopic arm 12 elongates or shortens and can be driven by the mode of hydraulic pressure or machinery, specifically adopt in the present embodiment hydraulic driving mode, be that telescopic arm 12 is specifically constituted by hydraulic jack 7 and pumping plant 8, pumping plant 8 is connected with the rodless cavity of hydraulic jack 7, the cylinder body of hydraulic jack 7 is fixed on rotating disk 1, and its piston rod 6 ends are with to cut native arm 3 hinged by hinge 5.When this laterally widen device is during in original state, the stroke of hydraulic jack 7 inner piston rods 6 is zero, cuts native arm 3 and be positioned at the circumference of rotating disk 1; In the time that laterally widen device is in running order, the movable end of native arm 3 is cut in the jacking under the hydraulic action of pumping plant 8 of piston rod 6 in hydraulic jack 7, it is outwards launched, until reach the required radius of widening, this is widened radius and is the distance between movable end and rotating disk 1 central point of cutting native arm 3; Cut native arm 3 and be outwards expanded to required widening after radius wait reaching, pumping plant 8 carries out pressurize to the rodless cavity in hydraulic jack 7, can obtain the stable stressed strong point so that cut when native arm 3 is cut soil and widened.

Utilize the laterally widen device in the present embodiment to apply inverted T-shaped pile as shown in Figure 4, specifically comprise the steps:

(1) as shown in Figure 4, boring point is determined in setting-out, utilizes existing rotary drilling rig to carry out mechanical hole building, completes the hole of cylindrical pile body 10;

(2) as shown in Fig. 1,2,4, the hole for the treatment of pile body 10 revolve dig complete after, above carry drilling rod, dismantle its former drill bit, replace with the laterally widen device described in the present embodiment, transfer afterwards to the bottom of pile body 10;

(3) as shown in Fig. 1,2,4, pressurize in the rodless cavity of hydraulic jack 7 by pumping plant 8, make piston rod 6 protruding, cutting native arm 3 with driving outwards launches taking hinge 2 as rotating shaft, in the time cutting native arm 3 and reach the required radius of widening apart from the distance between rotating disk 1 central point, pumping plant 8 stops pressurizeing in the rodless cavity of hydraulic jack 7, then takes pressurize operation;

(4) as shown in Fig. 1,2,4, under the support of piston rod 6, to cut native arm 3 and can obtain the stable stressed strong point, force structure is stable; Start rotary drilling rig, rotating shaft 9 is rotated thereupon and is driven rotating disk 1 and cuts native arm 3 and rotate, and cuts native arm 3 and by its sharp cutting teeth 4, the soil body is revolved and digs operation, to form the horizontal hole of enlarged body 11;

(5) as shown in Figure 4,, after pile hole construction, determine as required whether below arranges the specification of reinforcing cage and reinforcing cage, last concreting pile.

It should be noted that, the native arm quantity of cutting being installed in the present embodiment on rotating disk is not defined as one, in order to increase laterally widen shoveling efficiency, as shown in Figure 3, can on rotating disk 1, increase by one group accordingly and cut native arm assembly, this group increasing cuts native arm assembly and original to cut native arm assembly identical, and cutting the direction that native arm 3 launches for two should be consistent, so that two are cut native arm 3 and can act synergistically in the time widening shoveling.

Laterally widen utensil in the present embodiment has following beneficial effect:

(1) laterally widen device is simple in structure, and manufacturing cost is lower;

(2) the native arm of cutting of horizontally set is supported by hydraulic jack, and force structure is stable, in the time that laterally widen is cut the earth, cuts native arm not easily damaged, and setting cutting teeth shoveling efficiency is thereon higher;

(3) can revolve the stake end enlarged body of digging any thickness from the native arm of cutting of horizontal spreading, flexibility is larger, digs and can only revolve from vertical flared blade in prior art the stake end enlarged body that thickness is larger, and flexibility is less, and blade stress performance is not good, is more easily damaged.

Claims

1. a laterally widen device, described laterally widen utensil has a turning cylinder, described in it is characterized in that, widening device also comprises rotating disk, cuts native arm and telescopic arm, wherein said turning cylinder drives described turntable rotation, it is described that to cut native arm outline curved, its fixed end is articulated and connected fixing by hinge and described rotating disk, its other end is articulated and connected by the telescopic end of hinge and a telescopic arm, and the fixed end of described telescopic arm is fixedly connected with described rotating disk.

2. a kind of laterally widen device according to claim 1, cuts described in it is characterized in that and on native arm outline, has some compact arranged cutting teeths.

3. a kind of laterally widen device according to claim 1, the outline arc length of cutting native arm described in it is characterized in that is not more than 1/3 of described base outline girth.

4. a kind of laterally widen device according to claim 1, the pin joint of cutting native arm and described rotating disk described in it is characterized in that is positioned at described disk edge.

5. a kind of laterally widen device according to claim 1, it is characterized in that the pumping plant that described telescopic arm is connected by hydraulic jack and with described hydraulic jack rodless cavity forms, the cylinder body of described hydraulic jack is fixed on described rotating disk as the fixed end of telescopic arm, the piston rod end of described hydraulic jack as telescopic end with described in cut native arm one end and be articulated and connected.

6. a kind of laterally widen device according to claim 1, is characterized in that described telescopic arm is mechanical retractable arm.