CN103670283A

CN103670283A - Transverse-broaching device

Info

Publication number: CN103670283A
Application number: CN201310742557.8A
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: 2014-03-26
Anticipated expiration: 2033-12-30

Abstract

The invention discloses a transverse-broaching device. The transverse-broaching device is provided with a rotating shaft, and is characterized in that the transverse-broaching device further comprises a rotating table, an earth cutting arm and a telescopic arm, the rotating table is driven by the rotating shaft to rotate, the outer contour of the earth cutting arm is an arc, the fixed end of the earth cutting arm is hinged and fixed to the rotating table through a hinge shaft, the other end of the earth cutting arm is hinged to the telescopic end of the telescopic arm through a hinge shaft, and the fixed end of the telescopic arm is fixedly connected with the rotating table. The transverse-broaching device has the advantages that the transverse-broaching device is simple in structure and capable of carrying out transverse broaching on any position of a pile body, the earth cutting arm can be driven by the telescopic arm to unfold outwards at any time so as to adjust and enlarge radii as required, and the earth cutting arm is stable in stressed structure, not prone to damage and high in broaching efficiency.

Description

Laterally widen device

Technical field

The present invention relates to Counterboring apparatus, be 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.

At present, can at the bottom of grout pile, carry out the device of reaming, 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, under the centrifugal action that during boring, this aerofoil profile brill sheet produces in drilling rod rotation, automatically open, 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 difficult, 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 object of the invention 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 object of the invention 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.

Described telescopic arm consists of hydraulic jack and the pumping plant that is connected with described hydraulic jack rodless cavity, 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.

Advantage of the present invention is 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, to adjust as required, widen radius, cut native arm force structure stable, not fragile, and reaming efficiency is higher.

Accompanying drawing explanation

Fig. 1 is laterally widen device floor map in the present invention;

Fig. 2 is laterally widen device elevational schematic view in the present invention;

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

Fig. 4 is the inverted T-shaped pile schematic diagram that in the present invention, laterally widen device applies.

The specific embodiment

Below in conjunction with accompanying drawing, by embodiment, feature of the present invention and other correlated characteristic are described in further detail, 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 horizontal drill bit of special use, 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 rotation, 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 is 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, to change, cut native arm 3 movable ends apart from the distance of rotating disk 1 central point, 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 to its outline arc length, suitably adjust 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 the circumference that native arm 3 is positioned at rotating disk 1; When 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 and cuts the movable end of native arm 3 and the distance between rotating disk 1 central point; Wait reaching, cut native arm 3 and be outwards expanded to required widening after radius, the rodless cavity in 8 pairs of hydraulic jacks 7 of pumping plant carries out pressurize, so that cut when native arm 3 is cut soil and widened, can obtain the stable stressed strong point.

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, by pumping plant 8, in the rodless cavity of hydraulic jack 7, pressurize, make piston rod 6 protruding, to drive, cut native arm 3 and take hinge 2 and outwards launch as rotating shaft, when 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 rotations, cuts native arm 3 and is revolved and dug operation by 4 pairs of soil bodys of its sharp cutting teeth, 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 when 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, when laterally widen is cut the earth, cuts native arm not easily damaged, and the cutting teeth shoveling efficiency arranging is thereon higher;

(3) from the native arm of cutting of horizontal spreading, can revolve the stake end enlarged body of digging any thickness, flexibility is larger, and can only revolve from vertical flared blade in prior art, digs 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 described telescopic arm consists of hydraulic jack and the pumping plant that is connected with described hydraulic jack rodless cavity, 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.