CN102071685B - Hydraulic extruding and expanding device and method for pile foundation - Google Patents
Hydraulic extruding and expanding device and method for pile foundation Download PDFInfo
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- CN102071685B CN102071685B CN201110031743A CN201110031743A CN102071685B CN 102071685 B CN102071685 B CN 102071685B CN 201110031743 A CN201110031743 A CN 201110031743A CN 201110031743 A CN201110031743 A CN 201110031743A CN 102071685 B CN102071685 B CN 102071685B
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Abstract
The invention relates to a hydraulic extruding and expanding device and a hydraulic extruding and expanding method for a pile foundation. The device comprises a connecting device and an extruding and expanding arm connected with the connecting device. The extruding and expanding arm is composed of an upper extruding and expanding arm and a lower extruding and expanding arm hinged with the upper extruding and expanding arm; and the device is characterized in that: the upper extruding and expanding arm and/or the lower extruding and expanding arm comprises a first arm, a second arm and a supporting arm; the first arm is hinged with the second arm; and one end of the supporting arm is hinged with the first arm and/or the second arm, and the other end of the supporting arm is hinged with the connecting device. If the acting force applied to the upper supporting arm or the lower supporting arm which are uniformly arranged on double-cylinder bidirectional extruding and expanding equipment along the circumference cannot be balanced in a horizontal direction, the horizontal force is transmitted to a supporting sleeve; the supporting sleeve transmits the horizontal force to a sleeve connected with an outer piston rod, and the sleeve connected with the outer piston rod transmits the force to the outer piston rod, so the horizontal force is prevented from being transmitted to an inner piston rod from the supporting sleeve to avoid bending the inner piston rod.
Description
Technical field
The present invention relates to a kind of pile foundation with extruding-spreading device and method, particularly a kind of pile foundation is with hydraulic extruding extender and method.
Background technology
At present, in basic engineering construction, normally form the stake that has load dish, load trouble through squeezed equipment; The structure of existing extruding-spreading device is: be made up of head, hydraulic pressure station control system and onboard system etc., specifically be made up of body shell, hydraulic cylinder, squeezed arm, bolt, pivot pin, packing ring etc.Squeezed arm is made up of last squeezed arm, following squeezed arm, and general upper and lower squeezed arm is made up of single worker's arm.Present squeezed equipment mainly is two-way squeezed equipment of twin-tub and the unidirectional squeezed equipment of single cylinder.The two-way squeezed situation of twin-tub is: upper arm AB and underarm BC, B movement locus following, shown in accompanying drawing 1a.
The A point, x=0, y=↓;
The B point, x=←, y=0;
The C point, x=0, y=↑;
Twin-tub is two-way when squeezed, goes up squeezed arm under the effect of hydraulic cylinder outer piston bar, goes up the end that squeezed arm links to each other with the outer piston bar and does vertical motion; Squeezed arm is under the effect of piston in hydraulic cylinder bar down; The end that following squeezed arm links to each other with inner piston rod is done vertical motion, and both do move toward one another, goes up the tie point of squeezed arm and following squeezed arm; Do horizontal movement; Along with the increase of the angle θ of squeezed arm and vertical direction, throw off mutually with the soil body near underarm on the crowded soil of pile body, can not play the effect of abundant extrusion soil; After two-way crowded indigenous equipment was squeezed into dish, dish top and the bottom outline line is symmetry basically, is that asteroid is a straightway away from pile body near pile body promptly.The compression situation of the soil body is also identical substantially about the dish, and wherein big away from the compressed degree of the soil body of pile body, load-carrying properties are good; And near the soil body of pile body, compressed degree is less relatively, and load-carrying properties are relatively poor relatively, and because compaction is low here, on coil the chamber and fall soil easily.For bearing vertical load, the dish character of the soil body down is the key factor of decision bearing capacity of single pile.During two-way extruding,, throw off mutually with the soil body, can not play the effect of abundant extrusion soil near underarm on the crowded soil of pile body along with the increase of angle, unfavorable to the raising of bearing capacity of pile foundation.
When the single cylinder one-way movement; Go up squeezed arm under the hydraulic cylinder piston rod effect; Go up the end that squeezed arm links to each other with piston rod and do vertical motion, go up the tie point of squeezed arm and time squeezed arm, below the pin joint of squeezed arm and housing be that the center of circle moves in a circle; The extruding of the unidirectional squeezed upward dish of the single cylinder chamber soil body is insufficient, and soil easily falls.
Single cylinder is unidirectional when squeezed, upper arm AB, and underarm BC, B movement locus following, shown in dotted line in the accompanying drawing 11 and accompanying drawing 1b:
The A point, x=0, y=↓;
The B point, x=←, y=↓;
The C point, x=0, y=0;
Prop up, coil chamber end face generation and face the dead zone, the easy slump of this place's soil body increases sediment; Shown in accompanying drawing 11 dotted portions, during present unidirectional crowded soil, it is motionless to squeeze native underarm lower end; Squeeze native upper arm upper end and down moved by active force, make two crowded native limbs expand outwardly extrusion soil.Obviously, squeeze native underarm and have only rotation, except rotating, also have translation and squeeze native upper arm.Load dish upper wheels profile is a curve, and the bottom is a straight line.Squeeze native upper arm seemingly,, break away from, reduce gradually with the native brachium x that contacts near the crowded native arm portion and the soil of pile body promptly along with squeezing of the increase of native arm limb with the angle θ of vertical direction to the extruding of pile peripheral earth and two-way crowded great soil group.Only rotate when native underarm is worked and squeeze, in whole crowded native process, all keep in touch (x=L, L is for squeezing the length of native underarm) with the soil body, thereby the degree that the regolith of trying to get to the heart of a matter is compressed goes up soil greatly than coiling, this vertical carrying for stake is highly beneficial.In the brachium scope, big more from the distance of pile body, the compressed degree of the soil body is high more.
Therefore, extruding-spreading device of the prior art all exists in the squeezing process squeezed arm and the soil body and breaks away from and cause near the extruding of the pile body section soil body insufficiently, makes the problem of the supporting capacity of dish chamber soil body slump, influence simultaneously easily.
Summary of the invention
Make and push inadequate problem for the squeezed arm of the squeezed equipment that solves above-mentioned prior art breaks away from the soil body, the invention provides a kind of pile foundation with hydraulic extruding extender and method near the pile body section soil body.
Technical scheme of the present invention is: a kind of pile foundation is used hydraulic extruding extender, comprises catching device and the squeezed arm that is connected with catching device; Said squeezed arm is formed by last squeezed arm with the hinged following squeezed arm of last squeezed arm; Its special character is: said squeezed arm and/or following squeezed arm comprise the first arm, second arm and support arm; The said the first arm and second arm are hinged; One end of said support arm and said the first arm and/or second arm are hinged, and the said support arm other end and catching device are hinged.
Above-mentioned catching device comprises hydraulic cylinder and is arranged at hydraulic cylinder outside supporting sleeve or housing; When said catching device was provided with supporting sleeve, the other end of said support arm and said supporting sleeve were hinged; When said catching device was provided with housing, the said support arm other end and housing were hinged.
Above-mentioned supporting sleeve is connected through the cylinder barrel of gag lever post and said hydraulic cylinder, and said gag lever post is a plurality of.
Above-mentioned catching device comprises the outer piston bar sleeve pipe that links to each other; Also can slide along supporting sleeve in the nested inside that is arranged at supporting sleeve of the continuous sleeve pipe of said outer piston bar; One end of the continuous sleeve pipe of said outer piston bar is connected with the outer piston bar of hydraulic cylinder.
Above-mentioned support arm is hinged through supporting pin and housing; Said supporting pin is connected with housing.
Above-mentioned squeezed arm is two or more; Said down squeezed arm be with last squeezed arm corresponding two or more.
The length of above-mentioned second arm is greater than the length of the first arm and support arm.
The present invention also provides the squeezed method of a kind of above-mentioned pile foundation with hydraulic extruding extender, and its special character is: this method may further comprise the steps:
1) forms the pile body straight hole;
2) extruding-spreading device is stretched in the straight hole; Its some vertical motion that links to each other with the first arm of Driven by Hydraulic Cylinder; A pin joint of support arm is that the center of circle moves in a circle with the pin joint of the support arm other end and supporting sleeve or supporting pin, thereby the tie point that drives second arm and the first arm is squeezed outward, and the first arm and the second arm pin joint are done vertical and horizontal movement simultaneously; Go up squeezed arm with squeezed arm is outwards squeezed down, form a trouble chamber;
3) regain squeezed arm, the squeezed arm of rotation extruding-spreading device makes other positions at its same absolute altitude place in straight hole squeezed;
4) repeating step 2) to step 3), accomplish the squeezed of a dish chamber.
Comprise also that after the said method step 4) step 5) vertically moves extruding-spreading device, repeating step 2), form a load trouble chamber.
Can comprise also after the said method step 4) that also step 5) vertically moves extruding-spreading device, repeating step 2) to step 4), form the squeezed of another load dish chamber.
Hydraulic extruding extender and method that the present invention provides pile foundation to use have following characteristics:
When 1, the two-way squeezed equipment of twin-tub of the present invention is worked; If along circumference evenly arrange go up support arm or down the active force that receives in the horizontal direction of support arm can not balance, then horizontal force is passed to supporting sleeve, supporting sleeve passes to the outer piston bar sleeve pipe that links to each other with horizontal force; The continuous sleeve pipe of outer piston bar reaches the outer piston bar with power; The casing profile moment of inertia is bigger because the outer piston bar links to each other, and receives curved ability strong, can avoid supporting sleeve that horizontal force is passed to like this inner piston rod is caused its bending.
2, after the two-way crowded indigenous equipment of the present invention was squeezed into dish, dish top and the bottom, chamber outline line is symmetry basically, is circular curve near pile body promptly, is straightway away from pile body, and was better relatively near pile body section soil body squeezing action.
3, behind the squeezed one-tenth dish of unidirectional crowded indigenous equipment of the present invention, on to coil the chamber be circular curve near the pile body outline line, form " native arcuation ", be straightway away from the pile body outline line, good near pile body Duan Shangpan chamber soil body squeezing action.
Description of drawings
Fig. 1 a is the movement locus of the two-way squeezed arm of the twin-tub of prior art;
Fig. 1 b is the movement locus of the unidirectional squeezed arm of the single cylinder of prior art;
Fig. 2 is an extruding-spreading device structural representation of the present invention;
Structural representation when Fig. 3 is extruding-spreading device of the present invention work;
Fig. 4,5 is a squeezed arm configuration sketch map of the present invention;
Fig. 6 is a squeezed arm movement locus sketch map of the present invention;
Fig. 7 is second kind of example structure sketch map of the present invention;
Fig. 8 is the third example structure sketch map of the present invention;
Fig. 9 is the 4th a kind of example structure sketch map of the present invention;
Figure 10 is the 5th a kind of example structure sketch map of the present invention;
Figure 11 is the unidirectional squeezed arm movement locus comparison diagram of single cylinder of the equal length of squeezed arm of the present invention and prior art;
The movement locus comparison diagram of the two-way squeezed arm of equal length twin-tub of Figure 12 squeezed arm of the present invention and prior art.
Among the figure: 1-catching device, the last squeezed arm of 2-, squeezed arm under the 3-, 4-the first arm; 5-second arm, 6-support arm, 7-supporting pin, 8-supporting sleeve; 9-outer piston bar, 10-inner piston rod, the 11-outer piston bar sleeve pipe that links to each other, the vertical hydraulic cylinder of 12-; The 13-housing, the last tray of 14-, tray under the 15-, 16-gag lever post.
The specific embodiment
Referring to Fig. 2 and 3, pile foundation of the present invention is used hydraulic extruding extender, and its preferred implementation is:
First kind of embodiment
This extruding-spreading device comprises catching device 1 and the squeezed arm hinged with catching device 1; Catching device 1 of the present invention can adopt structure of the prior art to implement; Squeezed arm of the present invention comprises squeezed arm 2 and the following squeezed arm 3 hinged with last squeezed arm 2, realizes the hinged setting of squeezed arm up and down through bearing pin; Referring to Fig. 4 and Fig. 5; Go up squeezed arm 2 or squeezed arm 3 all can be for forming by the first arm 4, second arm 5 and with the first arm 4 or second arm, 5 hinged support arms 6 down; Wherein the first arm 4 and second arm 5 are hinged; Support arm 6 is hinged with the first arm 4, and perhaps the support arm 6 and second arm 5 are hinged, perhaps also can be with support arm 6 and the first arm 4, the 5 hinged settings simultaneously of second arm.The first arm 4 of going up squeezed arm 2 is hinged with the last tray 14 of catching device 1; The first arm 4 of squeezed arm 3 is hinged with the following tray 15 of catching device 1 down; Second arm, 5 one ends and its first arm 4 of going up squeezed arm 2 are hinged, and the other end is hinged with second arm 5 of following squeezed arm 3; Catching device 1 also comprises the hydraulic cylinder of the two-way inside and outside piston rod type of twin-tub and is arranged on the outside supporting sleeve 8 of hydraulic cylinder; Supporting sleeve 8 links to each other with cylinder barrel through gag lever post 16, and the gag lever post cross section is a circular shape, and it is vertically mobile for restriction supporting sleeve 8.The number of gag lever post 16 is provided with two at least, avoids squeezed arm 2 settings and outer piston bar 9 and is provided with.Gag lever post 16 can hingedly be provided with cylinder barrel, and gag lever post 16 also is hingedly to be provided with supporting sleeve 8.Support arm 6 is divided into support arm and following support arm; The other end of last support arm and following support arm is connected in respectively on the two ends of supporting sleeve 8, and hinged setting; Catching device of the present invention also comprises the outer piston bar sleeve pipe 11 that links to each other; Wherein the continuous sleeve pipe 11 of outer piston bar is to embed to be provided with supporting sleeve 8, and continuous sleeve pipe 11 1 ends of outer piston bar link to each other with outer piston bar 9, and the other end is a free end, and the continuous sleeve pipe of outer piston bar embeds supporting sleeve 8 inside, and can be along sliding in the supporting sleeve 8.Support arm 6 is fixed with the relative main frame of pin joint and the extension bar tie point of the supporting sleeve 8 of catching device 1 during use, and the first arm 4 is done vertical motion with the tie point of catching device 1.
When squeezed equipment of the present invention is worked; If along circumference evenly arrange go up support arm or down the active force that receives in the horizontal direction of support arm can not balance, then horizontal force is passed to supporting sleeve 8, supporting sleeve 8 passes to the outer piston bar sleeve pipe 11 that links to each other with horizontal force; The continuous sleeve pipe 11 of outer piston bar reaches outer piston bar 9 with power; Sleeve pipe 11 second moment of area are bigger because the outer piston bar links to each other, and receive curved ability strong, can avoid supporting sleeve 8 that horizontal force is passed to like this inner piston rod 10 is caused its bending.If the vertical force of last support arm 6 that receives for supporting sleeve 8 and following support arm 6 can not balance; Supporting sleeve 8 passes to gag lever post 16 with power; Gag lever post 16 is passed to cylinder barrel or other standing part with power; Gag lever post 16 makes supporting sleeve 8 spacing at vertical direction, can make squeezed arm 2 and following squeezed arm 3 according to preset squeezed track work like this.
Referring to Fig. 6; The tie point of squeezed arm 2 and catching device 1 of the present invention by the tie point of Driven by Hydraulic Cylinder and down squeezed arm 3 and catching device 1 by Driven by Hydraulic Cylinder; Two tie points are done the situation of move toward one another with identical speed, and its movement locus is shown in accompanying drawing 6.Go up squeezed arm 2AB, comprise the first arm 4AD the second arm 5DB, and support arm 6DE.Following squeezed arm 3BC, comprise the first arm 4CF the second arm 5FB, and support arm 6FG, wherein the movement locus of A, B, C, D, E, F, G is following:
Go up squeezed arm 2, the A point, x=0, y=↓;
The B point, x=←, y=0;
The D point, x=←, y=↓; (circular motion);
The E point, x=0, y=0;
Following squeezed arm 3, the C point, x=0, y=↑;
The F point, x=←, y=↑; (circular motion);
The G point, x=0, y=0.
After the two-way crowded indigenous equipment of the present invention was squeezed into the load dish, dish top and the bottom outline line is symmetry basically, is circular curve near pile body promptly, is straightway away from pile body.Better near pile body section soil body squeezing action.
Second kind of embodiment
Referring to Fig. 7; The first arm 4 of squeezed arm 2 and following squeezed arm 3 of the present invention all can directly be connected in the end of outer piston bar; Be that catching device 1 comprises up and down symmetrically arranged vertical hydraulic cylinder 12, the last tray 14 of catching device 1 and following tray 15 respectively with up and down vertically the end of the outer piston bar 9 of hydraulic cylinder 12 be connected; Vertical up and down hydraulic cylinder 12 inner piston rods 10 are realized connecting.Its supporting sleeve 8 is arranged on the stage casing outer, coaxial setting of inner piston rod 10, and with inner piston rod 10 relative fixed, its movement locus can be referring to Fig. 6.
The third embodiment
Referring to Fig. 8, with above-mentioned different be that the vertical up and down hydraulic cylinder 12 of this embodiment leans on housing 13 to connect; Hydraulic cylinder is at squeezed apparatus casing 13 two ends up and down, and the stretching motion of last hydraulic cylinder orders about squeezed arm 2 and moves downward with its tie point, and the stretching motion of following hydraulic cylinder orders about down squeezed arm 3 and moves upward with its tie point.Go up that the first arm 4 links to each other with the piston rod of last hydraulic cylinder in the squeezed arm 2, following squeezed arm 3 the first arms 4 link to each other with the piston rod of following hydraulic cylinder, up and down hydraulic cylinder about the two ends of squeezed arm 3.Upper and lower support arm 6 is hinged on the housing 13 through supporting pin 7, and upper and lower support arm 6 can pass through supporting pin 7 hinged settings with housing 13, promptly goes up support arm 6 and supporting pin 7 hinged settings, promptly descends support arm 6 and supporting pin 7 hinged settings.Supporting pin 7 length directions are vertical with upper and lower squeezed arm in-plane, and its two ends link to each other with the inwall of housing 13.When upper and lower squeezed arm respectively is 2.2 go up support arm 6 can 7,2 following support arms of a shared supporting pin can a shared supporting pin 7, the shared supporting pin 7 of perhaps upper and lower support arm.The active force that supporting pin 7 will be gone up or following support arm 6 receives reaches housing 13.This housing 13 is provided with hole in the place of squeezed arm, is convenient to stretching out of squeezed arm.Squeezed arm movement locus such as Fig. 6.
The 4th kind of embodiment
Referring to Fig. 9; The last squeezed arm 2 of squeezed arm is hinged according to above-mentioned method by the first arm 4, second arm 5 and support arm 6 in this embodiment; And squeezed arm 3 can adopt existing squeezed arm down; Fixed end of support arm 6 can be hinged on the housing 13 of squeezed equipment through supporting pin 7 on it, goes up in the squeezed arm 2 that hydraulic cylinder is connected in the first arm 4 and catching device 1, and following squeezed arm 3 links to each other with catching device 1 middle shell 13 bottoms.Go up expansion arm that squeezed arm 2 is made up of the first arm 4, second arm 5 and support arm 6; Last support arm 6 is promptly gone up support arm 6 and is connected with housing 13, unidirectional crowded soil of the present invention through supporting pin 7 and housing 13 hinged settings; Last dish chamber is a circular curve near pile body; Forming " native arcuation ", is straightway away from pile body, better near pile body Duan Shangpan chamber soil body squeezing action effect.Referring to accompanying drawing 11, expression the present invention squeezed movement locus, with the difference of single cylinder one-way movement track at present, make the length of the first arm 4 and second arm, 5 sums equal present single cylinder unidirectional the length of squeezed arm 2.Dotted portion is the unidirectional squeezed track of present single cylinder; Solid line partly is the movement locus of squeezed arm up and down among the present invention; Its difference only is expansion arm that squeezed arm 2 is made up of the first arm 4, second arm 5 and support arm 6; Last support arm 6 links to each other with last support arm 6 supporting arrangements, through supporting pin 7 hinged settings.In like manner also can be with descending squeezed arm 3 to be set to the new structure of forming by the first arm 4, second arm 5 and support arm 6, and go up the squeezed arm form that squeezed arm 2 adopts prior aries, decide according to practical situations.
The 5th kind of embodiment
Referring to Figure 10; This embodiment and Fig. 2,3,7,8 difference only are that the hydraulic cylinder of present embodiment is that single cylinder is unidirectional squeezed; Go up in the squeezed arm 2 that hydraulic cylinder is connected in the first arm 4 and catching device 1, the first arm 4 links to each other with catching device 1 middle shell 13 bottoms in the following squeezed arm 3.Upper and lower support arm 6 is through supporting pin 7 and housing 13 hinged settings, and supporting pin 7 two ends link to each other with the inwall of housing 13, and following support arm 6 is similar.Two go up support arms 6 can with the hinged setting respectively of 2 supporting pin 7 bodies, also can with 1 common hinged setting of supporting pin 7 bodies, perhaps support arm 6 shared supporting pins 7 up and down.The active force that supporting pin 7 will be gone up or following support arm 6 receives reaches housing 13.
Squeezed equipment of the present invention and present existing squeezed apparatus in comparison; Its characteristics just are to coil the chamber outline line and are " circular arc " near the pile body section, for guaranteeing its squeezed effect in squeezing process, squeezed arm of the present invention; In squeezing process; Go up the first arm 4 of squeezed arm 2 and being articulated and connected a little of second arm 5, with the first arm 4 another end points and second arm, 5 another end points be end points connecting line above, rather than thereunder; The down the first arm 4 of squeezed arm 3 and the tie point of second arm 5, with the first arm 4 another end points and second arm, 5 another end points be end points connecting line below, rather than above it, the dish chamber of formation is meaningful with present Bizet mutually like this; This length for the first arm 4, second arm 5 and support arm 6 all has certain requirement.During four kinds of situation described as follows:
1) forms by the first arm 4, second arm 5 and support arm 6 with following squeezed arm 3 if go up squeezed arm 2; For upper and lower squeezed arm 2,3; If the first arm 4 is positioned on the same vertical curve with the pin joint of catching device 1 and the pin joint of support arm 6 and supporting sleeve 8 or supporting pin 7; Support arm 6 and the first arm 4, second arm 5 are simultaneously hinged, so when the length of second arm 5 length greater than the first arm 4 and support arm 6, when the length of support arm 6 is not less than the length of the first arm 4; And to be more or less the same to good; Just can form the tie point of squeezed arm 2 the first arms 4 and second arm 5, with the first arm 4 another end points and second arm, 5 another end points be end points connecting line above, following squeezed arm 3 situation are similar.The length of the first arm is to be advisable less than the length of support arm and to be more or less the same; If the first arm is too much less than support arm; Receive the influence of triangle both sides sum greater than the 3rd limit, the be articulated and connected displacement of a vertical motion of the first arm 4 and catching device 1 will receive bigger restriction.
2) form by the first arm 4, second arm 5 and support arm 6 with following squeezed arm 3 if go up squeezed arm 2; When the first arm 4 and support arm 6 hinged; The first arm 4 and the 5 hinged settings of second arm; The length of second arm 5 is greater than the length of the first arm 4 and support arm 6; The length of the first arm 4 is greater than the length of last support arm 6, if the pin joint of the first arm 4 and catching device 1 is positioned on the same vertical curve with the pin joint of support arm 6 with supporting sleeve 8 or supporting pin 7, the pin joint that is not more than the first arm 4 and support arm 6 apart from the length of the first arm 4 and the pin joint of catching device 1 when the pin joint of the first arm 4 and support arm 6 is during apart from the length of the pin joint of support arm 6 and supporting arrangement 1; And to be more or less the same to good; Just can form the first arm 4 of squeezed arm 2 and the tie point of second arm 2, with the first arm 1 another end points and second arm, 2 another end points be end points connecting line above, following squeezed arm 3 situation are similar.
3) form by the first arm 4, second arm 5 and support arm 6 with following squeezed arm 3 if go up squeezed arm 2; When second arm 5 and support arm 6 hinged; The first arm 4 and the 5 hinged settings of second arm, the length of second arm 5 are greater than the length of the first arm 4 and support arm 6, and the length of the first arm 4 is less than support arm 6; The first arm 4 is positioned on the same vertical curve with the pin joint of catching device 1 and the pin joint of support arm 6 and supporting sleeve 8 or supporting pin 7; If when the length of pin joint distance second arm 5 of second arm 5 and the first arm 4 and the pin joint of support arm 6 adds that the first arm 4 length are not more than the length of support arm 6, and, just can form the first arm 4 of squeezed arm 2 and the tie point of second arm 5 to be more or less the same to good; With the first arm 4 another end points and second arm, 5 another end points be end points connecting line above, the situation of following squeezed arm 3 is similar.
4) for having only the situation that squeezed arm 2 is the first arm 4, second arm 5 and support arm 6 compositions that goes up; Perhaps having only down, squeezed arm 3 is situation that the first arm 4, second arm 5 and support arm 6 are formed; The length of second arm 5 is greater than the length of the first arm 4; The first arm 4 is positioned on the same vertical curve with the pin joint of catching device 1 and the pin joint of support arm 6 and supporting sleeve 8 or supporting pin 7; When the length of the first arm 4 is not more than the equal in length of support arm 6, also can both form the tie point of squeezed arm 2 the first arms 4 and second arm 5, with the first arm 4 another end points and second arm, 5 another end points be end points connecting line above; Squeezed arm in like manner down.
Extruding-spreading device of the present invention is compared with the extruding-spreading device of prior art, in squeezing process, has obtained reinforcement, its squeezed better effects if near the pile body dish chamber soil body partly.Referring to Figure 12, make the first arm 4 and second arm, 5 length sums equal the length of the two-way squeezed arm of present twin-tub, the squeezed movement locus of expression the present invention, with the difference of twin-tub bidirectional-movement track at present, can find out both difference from the dash area area.To for the first arm 4 and the 5 hinged settings of second arm, the situation of support arm 6 and the first arm 4, the 5 hinged settings of second arm, in the upper and lower squeezed arm with catching device 1 in tie point; The point that links to each other with hydraulic cylinder piston rod in the squeezed arm about being specially is done vertical motion, does move toward one another between the two, reduced distances between the two; Being specially the point that the first arm 4 links to each other with catching device 1 in the squeezed arm 2 vertically moves downward under the hydraulic cylinder piston rod effect; And its pin joint vertical direction of fixed end of going up support arm does not move, and does not also move in the horizontal direction, only rotates; So just making the first arm 4 and last support arm 6 pin joints is that the center of circle moves in a circle with the fixed end pin joint of support arm 6; Make second arm 5 at the volley like this, the upper extreme point of second arm 5 not only has vertical motion, also has level to motion; And go up in the squeezed arm 2 second arm, 5 hinged settings in second arm 5 and the squeezed arm 3 down; It is because the effect of gag lever post 16 or the constraint of housing 13, and support arm 6 fixed ends are motionless at vertical direction, and second arm, 5 pin joints can only move by along continuous straight runs in second arm 5 and the squeezed arm 3 down so go up in the squeezed arm 2.Down the operating principle of squeezed arm 3 is similar, like this in squeezing process, has also obtained reinforcement near the soil body of pile body part, makes squeezed better effects if.
The present invention also provides a kind of hydraulic pressure squeezed method, and its preferred implementation is:
This method is realized by following steps:
Step 1: form the pile body straight hole; Can drive piles with existing method, form straight hole;
Step 2: extruding-spreading device is stretched in the straight hole; The point vertical motion that Driven by Hydraulic Cylinder links to each other with its first arm; The first arm and the hinged setting of second arm, support arm and the first arm and/or the hinged setting of second arm, a pin joint of support arm is that the center of circle moves in a circle with the pin joint of the support arm other end and supporting sleeve or supporting pin; Thereby the tie point that drives second arm and the first arm is squeezed outward; The first arm and the second arm pin joint are done vertical and horizontal movement simultaneously, go up squeezed arm with squeezed arm is outwards squeezed down, form a trouble chamber;
Step 3: regain squeezed arm, the squeezed arm of rotation extruding-spreading device makes other positions at its same absolute altitude place in straight hole squeezed;
Step 4: repeating step 2 is accomplished the squeezed of a dish chamber to step 3.
After step 4, carry out step 5: vertically move extruding-spreading device, repeating step 2 forms another load trouble chamber.
Perhaps also can after step 4, carry out step 5: vertically move extruding-spreading device, repeating step 2 forms the squeezed of another load dish chamber to step 4.
The length of above-mentioned second arm is greater than the length of the first arm and support arm.
The embodiment of hydraulic extruding extender of the present invention is not limited only to above-mentioned several kinds.
Claims (10)
1. a pile foundation is used hydraulic extruding extender, comprises catching device and the squeezed arm that is connected with catching device; Said squeezed arm is formed by last squeezed arm with the hinged following squeezed arm of last squeezed arm; It is characterized in that: said squeezed arm and/or following squeezed arm comprise the first arm, second arm and support arm; The said the first arm and second arm are hinged; One end of said support arm and said the first arm and/or second arm are hinged, and the said support arm other end and catching device are hinged.
2. pile foundation according to claim 1 is used hydraulic extruding extender, it is characterized in that: said catching device comprises hydraulic cylinder and is arranged at hydraulic cylinder outside supporting sleeve or housing; When said catching device was provided with supporting sleeve, the other end of said support arm and said supporting sleeve were hinged; When said catching device was provided with housing, the said support arm other end and housing were hinged.
3. pile foundation according to claim 2 is used hydraulic extruding extender, it is characterized in that: said supporting sleeve is connected through the cylinder barrel of gag lever post and said hydraulic cylinder, and said gag lever post is a plurality of.
4. pile foundation according to claim 3 is used hydraulic extruding extender, it is characterized in that: said catching device comprises the outer piston bar sleeve pipe that links to each other; Also can slide along supporting sleeve in the nested inside that is arranged at supporting sleeve of the continuous sleeve pipe of said outer piston bar; One end of the continuous sleeve pipe of said outer piston bar is connected with the outer piston bar of hydraulic cylinder.
5. pile foundation according to claim 2 is used hydraulic extruding extender, it is characterized in that: said support arm is hinged through supporting pin and housing; Said supporting pin is connected with housing.
6. use hydraulic extruding extender according to claim 1 or 2 or 3 or 4 or 5 described pile foundations, it is characterized in that: said squeezed arm is two or more; Said down squeezed arm be with last squeezed arm corresponding two or more.
7. pile foundation according to claim 6 is used hydraulic extruding extender, it is characterized in that: the length of said second arm is greater than the length of the first arm and support arm.
8. the described pile foundation of claim 1 is characterized in that: said method comprising the steps of with the squeezed method of hydraulic extruding extender:
1) forms the pile body straight hole;
2) extruding-spreading device is stretched in the straight hole; Its some vertical motion that links to each other with the first arm of Driven by Hydraulic Cylinder; A pin joint of support arm is that the center of circle moves in a circle with the pin joint of the support arm other end and supporting sleeve or supporting pin, thereby the tie point that drives second arm and the first arm is squeezed outward, and the first arm and the second arm pin joint are done vertical and horizontal movement simultaneously; Go up squeezed arm with squeezed arm is outwards squeezed down, form a trouble chamber;
3) regain squeezed arm, the squeezed arm of rotation extruding-spreading device makes other positions at its same absolute altitude place in straight hole squeezed;
4) repeating step 2) to step 3), accomplish the squeezed of a dish chamber.
9. according to right 8 described squeezed methods, it is characterized in that: comprise also afterwards that said method step 4) step 5) vertically moves extruding-spreading device, repeating step 2), form another load trouble chamber.
10. according to right 8 described squeezed methods, it is characterized in that: comprise also afterwards that said method step 4) step 5) vertically moves extruding-spreading device, repeating step 2) to step 4), form the squeezed of another load dish chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110031743A CN102071685B (en) | 2011-01-28 | 2011-01-28 | Hydraulic extruding and expanding device and method for pile foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110031743A CN102071685B (en) | 2011-01-28 | 2011-01-28 | Hydraulic extruding and expanding device and method for pile foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102071685A CN102071685A (en) | 2011-05-25 |
| CN102071685B true CN102071685B (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110031743A Expired - Fee Related CN102071685B (en) | 2011-01-28 | 2011-01-28 | Hydraulic extruding and expanding device and method for pile foundation |
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| CN (1) | CN102071685B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105696943B (en) * | 2016-04-01 | 2018-08-28 | 宏源中科（北京）基础工程有限公司 | A kind of rotary excavating extruding expanding drilling machine |
| CN105696944B (en) * | 2016-04-01 | 2018-08-28 | 宏源中科（北京）基础工程有限公司 | Three trouble squeeze equipment of one kind |
| CN115653022A (en) * | 2022-12-09 | 2023-01-31 | 广州市市政工程试验检测有限公司 | But recycle's resistance to compression resistance to plucking mechanism |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350097A (en) * | 2000-10-19 | 2002-05-22 | 贺德新 | Extruding and extending mechanism for sectional Y-shaped extruded and extended pile |
| CN1363742A (en) * | 2002-02-08 | 2002-08-14 | 王春龙 | Multifunctional squeezing-enlarging shaper |
| CN1800508A (en) * | 2004-12-31 | 2006-07-12 | 北京中阔科技有限责任公司 | Gradient pushing and enlarging device |
| CN201962669U (en) * | 2011-01-28 | 2011-09-07 | 李征 | Hydraulic squeezing and expansion device for pile foundation |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05339941A (en) * | 1992-06-05 | 1993-12-21 | Sumitomo Metal Ind Ltd | Pile expansion bottom reinforcing device |
-
2011
- 2011-01-28 CN CN201110031743A patent/CN102071685B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350097A (en) * | 2000-10-19 | 2002-05-22 | 贺德新 | Extruding and extending mechanism for sectional Y-shaped extruded and extended pile |
| CN1363742A (en) * | 2002-02-08 | 2002-08-14 | 王春龙 | Multifunctional squeezing-enlarging shaper |
| CN1800508A (en) * | 2004-12-31 | 2006-07-12 | 北京中阔科技有限责任公司 | Gradient pushing and enlarging device |
| CN201962669U (en) * | 2011-01-28 | 2011-09-07 | 李征 | Hydraulic squeezing and expansion device for pile foundation |
Non-Patent Citations (1)
| Title |
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| 贺德新,沈保汉.DX挤扩装置及DX多节挤扩桩的应用.《工业建筑》.2001,第31卷(第1期), * |
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| CN102071685A (en) | 2011-05-25 |
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