CN102556011A - Supporting leg structure and engineering machine with same - Google Patents
Supporting leg structure and engineering machine with same Download PDFInfo
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- CN102556011A CN102556011A CN2012100199904A CN201210019990A CN102556011A CN 102556011 A CN102556011 A CN 102556011A CN 2012100199904 A CN2012100199904 A CN 2012100199904A CN 201210019990 A CN201210019990 A CN 201210019990A CN 102556011 A CN102556011 A CN 102556011A
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Abstract
The invention discloses a supporting leg structure for engineering machinery, which comprises a connecting arm, at least two supporting legs and driving parts, wherein the connecting arm is mounted on the engineering machinery, the supporting legs are hinged to the outer end of the connecting arm, and the driving parts are used for driving the supporting legs to swing. The length of the supporting structure can be evidently reduced as compared with that in the prior art while bearing capacity and stability of the supporting structure are guaranteed, no large-area site is needed, and the requirements of construction on small sites can be met. The supportability and tipping resistance of the supporting structure are higher when the supporting structure is as long as the supporting structure in the prior art, and bearing capacity is enhanced since supporting points are increased. Placing form of front supporting legs can be more flexible, and site adaptability is better. The invention further discloses an engineering machine with the supporting leg structure.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of leg structure of construction machinery and equipment.The invention still further relates to a kind of construction machinery and equipment with above-mentioned leg structure.
Background technology
Construction machinery and equipment has support system usually, and in order to functions such as support car load, car load go, what realize supporting role mainly is the leg structure of support system.With the concrete pump truck is example, and its bracing or strutting arrangement generally comprises four supporting legs that are positioned at the chassis, and during operation, two front leg struts stretch out forward, and two rear support legs stretch out backward in addition, are without loss of generality, and following is that example is introduced with the concrete pump truck.
Please refer to Fig. 1, Fig. 1 is the distribution schematic diagram of concrete pump truck supporting leg in the prior art, also shown is polygon and the round position relation of body gravity that supporting leg strong point line forms.
The support system of concrete pump truck is provided with first front leg strut 11 and second front leg strut 12, and first rear support leg 13 and 14, four supporting legs of second rear support leg are installed on the fixedly capstan head place on chassis.The expansion form of the outrigger arm of supporting leg and start point, length all can be adjusted; To keep the stability of car load; Require supporting leg to have reasonable structure form, enough structural mechanical property and effective support scope in the design of concrete pump truck, to guarantee its load-carrying capacity and whole vehicle stability.
When need supporting, four outrigger arms (telescopic boom) elongation, reach Len req after, oil cylinder stretches out, and is supported in ground.The expansion form of four outrigger arms generally has: two front leg strut X types, two rear support leg oscillating-types; Two front leg strut V-types, two rear support leg oscillating-types etc.First front leg strut 11 shown in Figure 1 and second front leg strut 12 are V-type, can stretch, and first rear support leg 13 and second rear support leg 14 can be swung, and move to suitable position support thereby drive supporting leg, satisfy stability requirement.
Can know by foregoing; Concrete pump truck is generally 4 supports (four supporting leg); According to mechanics principle, during operation, must guarantee that car load center of gravity circle falls within (quadrangle formation bearing surface in four formed quadrangles of supporting leg strong point line; Be safety zone), can effectively prevent tumbling of car body.Suppose that pump truck front leg strut and rear support leg length are certain; A, B, C, D are respectively the strong point of pump truck first front leg strut 11, second front leg strut 12, first rear support leg 13, second rear support leg 14 among the figure; Constitute the quadrangle bearing surface by four strong points; Do vertical line from the line (CA, AB, BD, BC) of the round mind-set 4 adjacent supports points of the center of gravity of concrete pump truck, this vertical line and strong point line and center of gravity circle all have intersection point, can obtain four intersection points (intersection point) with strong point line; Be made as M, R, S, N; Be made as Q, E, F, G with cooresponding four intersection points of center of gravity circle, intersection point M is made as L1 to the distance of intersection point Q, and intersection point R respectively is made as L2, L3, L4 to intersection point F, intersection point N to the distance of intersection point G to intersection point E, point of intersection S; L1, L2, L3, L4 are the minor increment that the cooresponding strong point links to the center of gravity circle, then can obtain the minimum value Lmin=min (L1, L2, L3, L4) of this quadrangle areal of support to the round line of center of gravity.
Keep the prerequisite of pump truck stability to be: during the jib revolution, machine gravity is positioned at areal of support all the time, and promptly the shortest distance at this areal of support edge of the round line-spacing of center of gravity should be greater than zero, otherwise will cause the pump truck unstability or tumble.
Promptly satisfy following relational expression:
Lmin=min (L1, L2, L3, L4) >=0, i.e. Li >=0 (i=1,2,3,4).
By finding out among Fig. 1; First front leg strut 11 is P with the intersection point of center of gravity circle; Can find out for guaranteeing Lmin >=0; The supporting leg part (the dash area AP among Fig. 1) that first front leg strut 11 exceeds intersection point P head and shoulders above the center of gravity circle, the part that exceeds is not utilized effectively, there is same problem in other supporting legs.Be that pump truck leg structure of the prior art exists following technical matters:
The first, in order to realize load-carrying capacity and guarantee stability that existing leg length is long, is underutilized, and redundancy occurred;
The second, in order to satisfy stability, when the supporting leg extension elongation is long, need take the larger area place, under the condition of limited of space, place, pump truck is not easy to operation.
In view of this, how improving the leg structure of support system, make it stably support car load and obtain fully effectively utilizing, is those skilled in the art's technical issues that need to address.
Summary of the invention
The object of the invention is for providing a kind of leg structure; This leg structure comprises connecting arm and at least two supporting legs; Then propping up leg length can obtain fully effectively utilizing; Satisfy durability requirements, and take less place, the construction machinery and equipment with this support system can be applied to the limited occasion of working space.Another object of the present invention provides a kind of construction machinery and equipment that comprises support system.
For reaching first purpose of the present invention, the present invention provides a kind of leg structure of construction machinery and equipment, comprises the connecting arm that is installed on the said construction machinery and equipment, and at least two supporting legs that are articulated in said connecting arm outer end; Said leg structure also comprises the drive element that is used to drive said supporting leg swing.
Preferably, hinged first supporting leg and second supporting leg in the outer end of said connecting arm; Has predetermined distance between the hinge axes of first supporting leg and second supporting leg.
Preferably, first supporting leg, second supporting leg are swung in two swinging planes.
Preferably, coaxial hinged first supporting leg in the outer end of said connecting arm and second supporting leg, and first supporting leg, second supporting leg are swung in two swinging planes.
Preferably, said drive element comprises first oil cylinder, second oil cylinder and connecting rod mechanism, to drive said first supporting leg, second supporting leg to the same side of said connecting arm swing.
Preferably, an end of said first oil cylinder is articulated in said connecting arm, and the other end is articulated in said first supporting leg; Said connecting rod mechanism comprises first connecting rod and second connecting rod; One end of said first connecting rod, second connecting rod is articulated in said connecting arm, second supporting leg respectively; One end of said second oil cylinder is articulated in said connecting arm, and the other end of said second oil cylinder, first connecting rod, second connecting rod is hinged through jointed shaft.
Preferably, said connecting arm is made up of joint arm flexible relatively successively more than the one-level.
Preferably, said supporting leg comprises the hold-down arm that outrigger arm is terminal with being arranged on outrigger arm, and said outrigger arm is made up of joint arm flexible relatively successively more than the one-level.
Leg structure provided by the invention has connecting arm and the supporting leg that is positioned at the connecting arm outer end; Under the prerequisite that guarantees load-carrying capacity and stability, the effective length of leg structure can shorten compared to prior art, makes that leg structure has obtained fully effectively utilizing; During operation; Need not to take the larger area place, also can keep the stable of car load, thereby make the construction machinery and equipment can operation in limited space with this supporting construction; Satisfy the construction demand in narrow and small place, make the field of application of construction machinery and equipment more extensive; And,, strengthened load-carrying capacity because the strong point number of leg structure increases compared to prior art; In addition, leg structure is made up of connecting arm and supporting leg, and it is more flexible that it puts form, can adapt to wider site requirements.Or discuss from another angle; When the equal in length of supporting leg in the effective length of leg structure and the prior art; The bearing surface area that leg structure forms in this programme is bigger than supporting leg bearing surface area in the prior art; The supporting capacity and the anti-tipping ability that promptly have this leg structure are stronger, and boundary of works area is wider.
For reaching another object of the present invention, the present invention also provides a kind of construction machinery and equipment, comprises the leg structure that is arranged on said construction machinery and equipment, and said leg structure is above-mentioned each described leg structure.Because above-mentioned support system has above-mentioned technique effect, the construction machinery and equipment with this support system also has identical technique effect.
Preferably, said construction machinery and equipment comprises fixedly capstan head, is equipped with said leg structure in the both sides of said fixedly capstan head, and said leg structure is located at the front portion of said construction machinery and equipment; The both sides of said fixedly capstan head are equipped with edge and the breach that said construction machinery and equipment length direction extends, and are positioned at the gap position of a corresponding side after the supporting leg in the leg structure of both sides is regained.
Preferably, the front portion of said fixedly capstan head is provided with first guide groove and second guide groove, and the connecting arm of both sides leg structure is installed in respectively in said first guide groove and second guide groove, and can in guide groove separately, slide.
Preferably, said first guide groove and second guide groove be arranged crosswise spatially, and on the short transverse of said fixedly capstan head, staggers mutually; Perhaps, said first guide groove and second guide groove are arranged at sustained height, and two guide groove apart arrangement or V-shaped layout.
Description of drawings
Fig. 1 is the distribution schematic diagram of concrete pump truck supporting leg in the prior art, also shown is polygon and the round position relation of body gravity that supporting leg strong point line forms;
Fig. 2 is in the structure principle chart of collapsed state for leg structure in a kind of specific embodiment of concrete pump truck leg structure provided by the present invention;
Fig. 3 is in the structure principle chart of deployed condition for leg structure among Fig. 2;
Fig. 4 is that the position of supporting leg strong point line and body gravity circle among Fig. 3 concerns scheme drawing;
Fig. 5 is in the structure principle chart of deployed condition for leg structure in the another kind of specific embodiment of concrete pump truck leg structure provided by the present invention.
The specific embodiment
Core of the present invention is for providing a kind of leg structure; This leg structure comprises connecting arm and at least two supporting legs; Then propping up leg length can obtain fully effectively utilizing; Satisfy durability requirements, and take less place, the construction machinery and equipment with this support system can be applied to the limited occasion of working space.Another core of the present invention provides a kind of construction machinery and equipment that comprises support system.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is done further detailed description below in conjunction with accompanying drawing and specific embodiment.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is in the structure principle chart of collapsed state for leg structure in a kind of specific embodiment of concrete pump truck leg structure provided by the present invention; Fig. 3 is in the structure principle chart of deployed condition for leg structure among Fig. 2.
Support system in this specific embodiment has two rear support legs and two front leg struts; Front leg strut shown in Fig. 2 and Fig. 3 and rear support leg all are distributed in the both sides of axis, chassis; Be without loss of generality; With the concrete pump truck is example, and the front leg strut of concrete pump truck and rear support leg all are arranged at the fixedly left and right sides of capstan head 100, chassis.
Among this embodiment; Two front leg struts include connecting arm and the supporting leg that is positioned at the connecting arm outer end; As shown in Figure 3, left front supporting leg 21 has the left connecting arm 213 that is installed on fixing capstan head 100 places and first left branch leg 211 and second left branch leg 212 that are articulated in left connecting arm 213 outer ends, equally; Right front supporting leg 22 also comprise right connecting arm 223, the first right supporting leg 221 and the second right supporting leg 222 (described in the literary composition about be axis, chassis two side directions, about in Fig. 2 and Fig. 3, showing as).First supporting leg and second supporting leg are all hinged with connecting arm, and promptly first supporting leg and second supporting leg are the oscillating-type supporting leg, and after connecting arm moved to assigned address, first supporting leg and second supporting leg were swung as required and put in place, and support cylinder stretches out and is supported in ground.
And based on durability requirements; The distance that every adjacent two strong points of front leg strut and rear support leg link to the round heart of concrete pump truck center of gravity is all greater than the center of gravity radius of a circle; The shortest distance that promptly links to round week of center of gravity is greater than zero; Wherein, the front leg strut strong point comprises the strong point of its each supporting leg of connecting arm outer end.
Understand in conjunction with Fig. 4; Fig. 4 is that the position of supporting leg strong point line and concrete pump truck center of gravity circle among Fig. 3 concerns scheme drawing; This figure is with six leg structures of solid line performance present embodiment; Also show front leg strut structure of the prior art by a dotted line, so that the front leg strut structure of prior art front leg strut mechanism and this programme is distinguished in contrast.
After front leg strut and rear support leg all reach the desired location; If the strong point of first left branch leg 211 and second left branch leg 212 is respectively A1, A2; The strong point of the first right supporting leg 221 and the second right supporting leg 222 is respectively B1, B2; The strong point of first rear support leg 23 and second rear support leg 24 is respectively C1, D1, then connects the adjacent supports point successively, can obtain the hexagon bearing surface that each supporting leg forms.By the round heart of center of gravity respectively to the hexagon bearing surface sideline (line of supporting leg adjacent supports point; Be B1A1, A1A2, A2D1, D1C1, C1B2, B2B1) make vertical line; Can obtain hexagon areal of support sideline and the pairing shortest distance of the round line of center of gravity respectively; Be made as L1 ', L2 ', L3 ', L4 ', L5 ', L6 ', and try to achieve the shortest distance Smin '=min (L1 ', L2 ', L3 ', L4 ', L5 ', L6 ') in this hexagon areal of support sideline of the round line-spacing of center of gravity.
For satisfying pump truck stability, the shortest distance in this hexagon areal of support sideline of the round line-spacing of car load center of gravity should satisfy:
Smin '=min (L1 ', L2 ', L3 ', L4 ', L5 ', L6 ') >=0, be Li ' >=0 (i=1,2,3; 4,5,6) (satisfy this condition; The distance that is car load center of gravity to hexagon bearing surface sideline is all greater than the center of gravity radius of circle, and promptly the center of gravity circle falls in the bearing surface).
As can be seen from Figure 4; Compare with the leg structure of prior art; Under the prerequisite that guarantees Smin ' >=0; Left front supporting leg 21 and right front supporting leg 22 are significantly less than front leg strut length of the prior art to the effective length (length that connecting arm root to a supporting leg is terminal) of the round heart of center of gravity, are promptly guaranteeing that bearing surface can hold on the basis of center of gravity circle, and the length of this programme front leg strut can obviously reduce compared to prior art.
Can know according to above-mentioned analysis; Under the prerequisite that guarantees load-carrying capacity and stability; The length of front leg strut can be fully effectively used among the present invention; And compared to prior art, because the strong point number of front leg strut increases (each front leg strut connecting arm outer end connects two supporting legs, has two strong points); Under almost increasing complete vehicle weight (in Fig. 4, the length of a front leg strut is roughly suitable in the overall length of left connecting arm 213, first left branch leg 211 and second left branch leg 212 and the prior art) prerequisite, do not strengthened load-carrying capacity; Further; Because the length of front leg strut is shorter, during operation, need not to take the larger area place; Also can keep the stable of car load; Thereby make the construction machinery and equipment can operation in limited space, satisfy the construction demand in narrow and small place, make the field of application of construction machinery and equipment more extensively improve the place comformability with this supporting construction.And leg structure is made up of three parts, and it is more flexible that it puts form, and is flexible better, can adapt to wider site requirements.
Or from another angle and opinion, when the length of left front supporting leg 21 and right front supporting leg 22 all with prior art in during the equal in length of front leg strut, the bearing surface area of two front leg strut formation is bigger than supporting leg bearing surface area in the prior art in this programme.The supporting capacity and the anti-tipping ability of support system that promptly has this supporting leg arrangement is stronger, and boundary of works area is wider.
In addition, the left connecting arm 213 among Fig. 4 is the concertina type supporting leg flexible with respect to construction machinery and equipment with right connecting arm 223, and left connecting arm 213 and right connecting arm 223 are spatially; Can intersect and be the X-shaped distribution; Or V-shaped distribution, when then leg structure was regained, connecting arm was recoverable in the car body.The connecting arm of front leg strut can also be made up of two-stage or the joint arm that stretches relatively more than the two-stage; The outrigger arm of two supporting legs of its outer end also can be made up of one-level or the flexible relatively outrigger arm more than the one-level; Promptly the connecting arm of this leg structure and supporting leg partly are Collapsible structure, and alerting ability is stronger.
When concrete pump truck changes off working state over to; As shown in Figure 2; Left side connecting arm 213 and right connecting arm 223 withdrawals (dotted portion among the figure), the left side that first left branch leg 211, second left branch leg 212 can close at car body, the right side that the first right supporting leg 221 and the second right supporting leg 222 close at car body; First rear support leg 23 and second rear support leg 24 also correspondingly close at the car body both sides respectively; Because the length of the supporting leg of connecting arm outer end can be shorter, when supporting leg is regained the car body both sides, can not interfere with rear support leg; When car body gets into operating condition (Fig. 3), left connecting arm 213 stretches out with right connecting arm 223, and each supporting leg of connecting arm outer end can be expanded to the optimum position respectively, and is supported on the ground.Certainly; The connecting arm of front leg strut adopts oscillating-type also can realize the object of the invention; And connecting arm is comparatively preferred scheme with respect to car body is flexible, and at this moment, front leg strut has the advantage of oscillating-type supporting leg and concertina type supporting leg concurrently; The concertina type connecting arm has guaranteed the intensity and the stability of leg structure, and the oscillating-type supporting leg of its outer end has the alerting ability of putting again concurrently.
In the foregoing description, the jointed shaft of each supporting leg of connecting arm outer end is positioned at the diverse location place of connecting arm in the front leg strut structure, promptly has predetermined distance between the axis of jointed shaft, is convenient to the withdrawal and the expansion of supporting leg.At this moment, each supporting leg of connecting arm outer end is swung in different swinging planes, then the swing of each supporting leg and withdrawal can not interfered each other; Certainly; When each supporting leg is swung, rationally control the swing path of each supporting leg in same plane, also can realize the object of the invention.
In fact, the jointed shaft of each supporting leg also can coaxially be provided with, and at this moment, each supporting leg of same front leg strut is swung in two swinging planes, and during withdrawal, each supporting leg is laminated in a side of car body, can not increase the width of car body.In order to guarantee car load wide regulation and be convenient to the withdrawal of supporting leg that can on the fixedly capstan head 100 that leg structure is installed, breach 101 be set, breach 101 extends along the construction machinery and equipment length direction; When then the supporting leg of connecting arm is retracted to fixedly capstan head 100 both sides; Just be positioned at this breach 101 places, can understand with reference to Fig. 2, when left and right sides leg structure is the combined structure of connecting arm and supporting leg; In the fixing both sides of capstan head 100 breach 101 is set all; So that the supporting leg of both sides all is recoverable to breach 101 places, make complete vehicle structure more compact, satisfy the width demand.
The drive element that drives the rotation of oscillating-type supporting leg can be a driving oil cylinder.As shown in Figure 3, be example with right front supporting leg 22, drive element comprises first oil cylinder 31, second oil cylinder 32 and the connecting rod mechanism.One end of first oil cylinder 31 is articulated in connecting arm 23, and the other end is articulated in the second right supporting leg 22; Connecting rod mechanism comprises first connecting rod 33 and second connecting rod 34; One end of first connecting rod 33, second connecting rod 34 is articulated in the first right supporting leg 21, connecting arm 23 respectively; It is hinged through jointed shaft that one end of second oil cylinder 32 is articulated in the other end of connecting arm 23, the second oil cylinders 32, first connecting rod 33, second connecting rod 34.This kind type of drive can guarantee that each supporting leg of connecting arm outer end can be rocked to the same side, is convenient to regain the layout of supporting leg.At this moment, connecting arm can be preferably with respect to fixedly capstan head 100 is flexible, then connecting arm can be retractable to fixedly in the capstan head 100; Fixedly in the capstan head 100 guide groove that supplies connecting arm to insert can be set; As can be seen from Figure 2, fixedly capstan head 100 front part sides connecting arms insert fixedly capstan head 100 in-to-ins, first guide groove and second guide groove, during two guide groove spatial destributions; Can arranged crosswise; And on the short transverse of fixing capstan head 100, stagger, promptly be X-shaped and arrange, so that two connecting arm mutually noninterferes ground inserts and stretches out.Perhaps, first guide groove that fixedly is provided with in the capstan head 100 is in sustained height and separates setting with second guide groove, is provided with such as splayed setting or H shape, or is in sustained height and V-shaped layout.
Certainly, also can oil cylinder be set so that each supporting leg of connecting arm outer end is folding to rolling to each side of connecting arm, such as two oil cylinders are set, the two ends of an oil cylinder connect a connecting arm and a supporting leg respectively, and the two ends of another oil cylinder connect connecting arm and another supporting leg respectively.The individual supporting leg of connecting arm outer end is rolled to each side when folding to connecting arm, and for ease of the withdrawal of leg structure, connecting arm can be taked the pivotally attached mode with fixing capstan head 100, and promptly whole leg structure is retracted to the fixedly both sides of capstan head 100.
Drive element also can be motor, please refer to Fig. 5, and Fig. 5 is in the structure principle chart of deployed condition for leg structure in the another kind of specific embodiment of concrete pump truck leg structure provided by the present invention.With right front supporting leg 22 is example, and the first right supporting leg 21 has first CD-ROM drive motor, 42, the second right supporting legs 22 and has second CD-ROM drive motor 41, and it is easier that the installation of motor and control compare to driving oil cylinder.
To the foregoing description, left front supporting leg 21 includes connecting arm and two supporting legs with right front supporting leg 22, also can only left front supporting leg 21 or right front supporting leg 22 wherein one comprise connecting arm and two supporting legs; Certainly; Two front leg struts are preferably symmetrical structure, make that support is more stable, when having two above front leg struts; Each front leg strut all can adopt this kind combined structure, and rear support leg equally also can adopt the combined leg structure of this kind.In fact, the outer end of connecting arm can also connect the supporting leg more than three or three, is satisfying under the identical stability requirement; The number of supporting leg is many more, and the length of each leg structure can be shorter (or under the certain situation of leg structure length, the bearing surface area that front leg strut and rear support leg form is maximum); Certainly, because the restriction of complete vehicle weight, and the length of leg structure needs greater than the center of gravity radius of a circle; The outer end of leg structure connecting arm is provided with two supporting legs and is comparatively desirable scheme; Compared to prior art, under the situation that increases complete vehicle weight hardly, can shorten the length of leg structure to greatest extent.
Except above-mentioned leg structure, the present invention also provides a kind of construction machinery and equipment, comprises the leg structure that is arranged on the construction machinery and equipment, and described supporting construction is the described supporting construction of above-mentioned arbitrary embodiment.Because above-mentioned leg structure has above-mentioned technique effect, the construction machinery and equipment with this leg structure also has identical technique effect, does not give unnecessary details at this.
More than a kind of leg structure provided by the present invention and construction machinery and equipment with this leg structure have been carried out detailed introduction.Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (12)
1. the leg structure of a construction machinery and equipment is characterized in that, comprises the connecting arm that is installed on the said construction machinery and equipment, and at least two supporting legs that are articulated in said connecting arm outer end; Said leg structure also comprises the drive element that is used to drive said supporting leg swing.
2. the leg structure of construction machinery and equipment according to claim 1 is characterized in that, hinged first supporting leg and second supporting leg in the outer end of said connecting arm; Has predetermined distance between the hinge axes of first supporting leg and second supporting leg.
3. the leg structure of construction machinery and equipment according to claim 2 is characterized in that, first supporting leg, second supporting leg are swung in two swinging planes.
4. the leg structure of construction machinery and equipment according to claim 1 is characterized in that, coaxial hinged first supporting leg in the outer end of said connecting arm and second supporting leg, and first supporting leg, second supporting leg are swung in two swinging planes.
5. according to the leg structure of each described construction machinery and equipment of claim 2-4, it is characterized in that said drive element comprises first oil cylinder, second oil cylinder and connecting rod mechanism, to drive said first supporting leg, second supporting leg to the same side of said connecting arm swing.
6. the leg structure of construction machinery and equipment according to claim 5 is characterized in that, an end of said first oil cylinder is articulated in said connecting arm, and the other end is articulated in said first supporting leg; Said connecting rod mechanism comprises first connecting rod and second connecting rod; One end of said first connecting rod, second connecting rod is articulated in said connecting arm, second supporting leg respectively; One end of said second oil cylinder is articulated in said connecting arm, and the other end of said second oil cylinder, first connecting rod, second connecting rod is hinged through jointed shaft.
7. the leg structure of construction machinery and equipment according to claim 5 is characterized in that, said connecting arm is made up of joint arm flexible relatively successively more than the one-level.
8. according to the leg structure of each described construction machinery and equipment of claim 1 to 7, it is characterized in that said supporting leg comprises the hold-down arm that outrigger arm is terminal with being arranged on outrigger arm, said outrigger arm is made up of joint arm flexible relatively successively more than the one-level.
9. a construction machinery and equipment comprises the leg structure that is arranged on the said construction machinery and equipment, it is characterized in that, said leg structure is each described leg structure of claim 1 to 8.
10. construction machinery and equipment according to claim 9 is characterized in that said construction machinery and equipment comprises fixedly capstan head, is equipped with said leg structure in the both sides of said fixedly capstan head, and said leg structure is located at the front portion of said construction machinery and equipment; The both sides of said fixedly capstan head are equipped with edge and the breach that said construction machinery and equipment length direction extends, and are positioned at the gap position of a corresponding side after the supporting leg in the leg structure of both sides is regained.
11. construction machinery and equipment according to claim 10; It is characterized in that; The front portion of said fixedly capstan head is provided with first guide groove and second guide groove, and the connecting arm of both sides leg structure is installed in respectively in said first guide groove and second guide groove, and can in guide groove separately, slide.
12. construction machinery and equipment according to claim 11 is characterized in that, said first guide groove and second guide groove be arranged crosswise spatially, and on the short transverse of said fixedly capstan head, staggers mutually; Perhaps, said first guide groove and second guide groove are arranged at sustained height, and two guide groove apart arrangement or V-shaped layout.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013091329A1 (en) * | 2011-12-21 | 2013-06-27 | 湖南三一智能控制设备有限公司 | Engineering machinery and stabilizer structure thereof |
| CN106706333A (en) * | 2016-12-13 | 2017-05-24 | 北汽福田汽车股份有限公司 | Concrete pump truck stability test method |
| CN110271978A (en) * | 2019-05-31 | 2019-09-24 | 中联重科股份有限公司 | Support device, engineering machine, control method and control system |
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| EP0357988A2 (en) * | 1988-09-07 | 1990-03-14 | Putzmeister-Werk Maschinenfabrik Gmbh | Mobile concrete pump |
| EP1005436B1 (en) * | 1997-08-21 | 2002-02-27 | PUTZMEISTER Aktiengesellschaft | Mobile work machine with telescopic supporting legs |
| US20080053301A1 (en) * | 2004-12-28 | 2008-03-06 | Giat Industries | Weapon system able to equip a light vehicle and process to implement such a weapon system |
| CN2801569Y (en) * | 2005-04-30 | 2006-08-02 | 徐州重型机械有限公司 | Front-extension rear oscillating support of concrete pump car |
| CN1799908A (en) * | 2005-12-30 | 2006-07-12 | 三一重工股份有限公司 | Telescopic support leg for travel machine and concrete pump truck with the same |
| CN201254167Y (en) * | 2008-08-21 | 2009-06-10 | 三一重工股份有限公司 | Outrigger and engineer machine with the same |
| CN202448957U (en) * | 2011-12-30 | 2012-09-26 | 三一重工股份有限公司 | Engineering machinery and landing leg thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013091329A1 (en) * | 2011-12-21 | 2013-06-27 | 湖南三一智能控制设备有限公司 | Engineering machinery and stabilizer structure thereof |
| CN106706333A (en) * | 2016-12-13 | 2017-05-24 | 北汽福田汽车股份有限公司 | Concrete pump truck stability test method |
| CN110271978A (en) * | 2019-05-31 | 2019-09-24 | 中联重科股份有限公司 | Support device, engineering machine, control method and control system |
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| CN102556011B (en) | 2015-02-18 |
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