CN102493654A - Engineering machine - Google Patents
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- CN102493654A CN102493654A CN2011104329936A CN201110432993A CN102493654A CN 102493654 A CN102493654 A CN 102493654A CN 2011104329936 A CN2011104329936 A CN 2011104329936A CN 201110432993 A CN201110432993 A CN 201110432993A CN 102493654 A CN102493654 A CN 102493654A
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Abstract
The invention discloses an engineering machine comprising a chassis and a fixed rotating tower arranged on the chassis, wherein the fixed rotating tower is connected with a supporting leg device comprising a horizontal supporting leg and a first supporting leg connected to the tail end of the horizontal supporting leg; the fixed rotating tower comprises a turntable frame connected with a turntable of the engineering machine and a supporting leg frame fixed below the turntable frame, wherein the supporting leg frame comprises at least two connecting arms, and the outer end of each connecting arm is hinged with the horizontal supporting leg; any two adjacent connecting arms are intersected or extending lines of any two adjacent connecting arms are intersected; the horizontal supporting leg comprises at least two arm joints hinged in sequence, and a second driving part for driving any two adjacent arm joints to unfold and fold is arranged between the two adjacent arm joints; a root end arm joint in each arm joint is hinged with the connecting arms, a first driving part for driving the root end arm joint to unfold and fold is arranged between the root end arm joint and the connecting arms, and the first supporting leg is connected to the tail end of a tail end arm joint in each arm joint.
Description
Technical field
The present invention relates to technical field of engineering machinery, relate in particular to a kind of fixedly engineering machinery of capstan head and support leg device that comprises.
Background technology
The rotation of jib when many engineering machinery need adopt turret apparatus realization work is to guarantee the operation flexibility of jib in the engineering machinery work; And the support leg device that can in horizontal plane, rotate is being set on the capstan head, in order to realize support to engineering machinery.Turret apparatus generally includes fixedly several major parts such as capstan head, turntable and slew gear; Fixedly capstan head is the matrix that carries turntable and supporting leg as the main body of turret apparatus; Turntable can be with respect to fixing turret rotated through slew gear, thereby plays the effect that jib rotates that drives.Support leg device is articulated in fixedly capstan head usually, support and transition that it realizes engineering machinery through the expansion and the contraction of supporting leg.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of the fixedly capstan head of engineering machinery in the prior art; Fig. 2 is the structural representation of the support leg device of engineering machinery in the prior art; Briefly introduce the defective that this engineering machinery exists at work below.
In the prior art; As shown in Figure 1; Should be fixedly capstan head be the regular relatively box-structure of structure that is welded with steel plate, it is fixedly connected on the chassis of engineering machinery, turntable is installed on fixedly on the capstan head through pivoting support; Fixedly capstan head is provided with oscillating support leg mount pad 1 " with telescopic outrigger mount pad 2 ", is respectively applied for oscillating support leg and telescopic outrigger are installed.As shown in Figure 2; Supporting leg of the prior art comprise two front leg strut devices 1 ' with two rear support leg devices 2 '; Front leg strut device 1 ' comprise support arm 11 ', standard arm 12 ', supporting leg linking arm 13 ' and be fixed in body 3 ' on supporting leg framework 14 '; Support arm 11 ' with standard arm 12 ' be connected through the hinge; Standard arm 12 ' with supporting leg linking arm 13 ' hinged through hinge, supporting leg linking arm 13 ' be connected with the rotary table of concrete mixer through telescopic oil cylinder is through telescopic oil cylinder drive supporting leg linking arm 13 ' in supporting leg framework 14 ' interior telescopic moving; And then the standard of drive arm 12 ' and support arm 11 ' in supporting leg framework 14 ' interior telescopic moving; Two supporting leg frameworks 14 ' be connected with the rotary table of concrete mixer, two supporting leg frameworks 14 ' be arranged in parallel in the base both sides of concrete mixer, the same plane of and two supporting leg frameworks 14 ' be positioned at.
After engineering machinery is accomplished transportation transition, arrival job site; Save in supporting leg framework 14 ' interior moving back and forth through each arm; Add support arm 11 ' with standard arm 12 ', standard arm 12 ' with supporting leg linking arm 13 ' horizontally rotate and realize elongating or shortening of supporting leg and confirming of angle; Realize support through being connected in the vertical supporting leg that is provided with in support arm 11 ' bottom again, guarantee the job stability of concrete mixer concrete mixer.
Yet; The volume of the fixedly capstan head of above-mentioned box-structure is big, quality big, use raw material more; Its structure is heavy, and pump truck the concrete piston motion is bigger to the impact of fixing capstan head in the course of the work, the fixedly capstan head of box-structure is prone to shake; And the noise that produces is bigger, and heat dispersion is not good.In addition; The support arm 11 of above-mentioned support leg device ', standard arm 12 ' and supporting leg linking arm 13 ' be set in supporting leg framework 14 ' inside; And the telescopic oil cylinder through being located at supporting leg framework 14 ' inside is realized telescopic moving; This structure is very complicated, and manufacturing, processing, assembling and dismounting be inconvenience all, therefore causes the operating efficiency of concrete mixer lower.
In view of this; Demand urgently to above-mentioned technical problem; The fixedly capstan head of existing engineering machinery and the structure of support leg device are optimized design, make fixedly capstan head and support leg device is all simple in structure, convenient processing and manufacture, and fixedly capstan head have also that volume is little, light weight, advantage that shock resistance is good.
Summary of the invention
The technical problem that the present invention will solve is for providing a kind of engineering machinery, makes its fixedly capstan head and support leg device is simple in structure, convenient processing and manufacture, and fixedly capstan head have also that volume is little, light weight, advantage that shock resistance is good.
For solving the problems of the technologies described above; The present invention provides a kind of engineering machinery; Comprise the chassis and be located at the fixedly capstan head on the said chassis, said fixedly capstan head is connected with support leg device, and said support leg device comprises first supporting leg that horizontal support legs is terminal with being connected in said horizontal support legs;
Said fixedly capstan head comprises the turntable frame; Said turntable frame is connected with the turntable of said engineering machinery; Also comprise the supporting rack that is fixed in said turntable frame below, said supporting rack comprises at least two linking arms, and the outer end of each said linking arm is hinged with said horizontal support legs respectively; Two adjacent arbitrarily said linking arms intersect, or the extended line of two adjacent said linking arms intersects arbitrarily.
Said horizontal support legs comprises at least two hinged successively arm joints, and is provided with driving this expansion of alternate arm joint and second folding driver part between any two adjacent arm joints; In each arm joint, its butt arm saves with said linking arm hinged, and between the two, is provided with first driver part that this butt arm joint of driving launches and folds, and said first supporting leg is connected in the end that terminal arm saves in each arm joint.
Preferably, the number of said linking arm is four, and four said linking arms intersect X type supporting rack; First integral arms that the said linking arm of two positioned opposite is formed in one, second integral arms that the said linking arm of two other positioned opposite is formed in one.
Preferably, said first integral arms is surrounded by first riser, second riser, first upper cover plate and first lower cover, and said first integral arms is provided with first notch; Said second integral arms is surrounded by the 3rd riser, the 4th riser, second upper cover plate and second lower cover, and said second integral arms is provided with second notch; At the crossover location of said X type supporting rack, said first notch cooperates clamping with said second notch.
Preferably, the X type upper cover plate that said first upper cover plate and said second upper cover plate are formed in one, the X type lower cover that said first lower cover and said second lower cover are formed in one.
Preferably, interconnection place of said X type upper cover plate is provided with second through hole, and interconnection place of said X type lower cover is provided with third through-hole.
Preferably, the two ends of said first integral arms and said second integral arms are equipped with the supporting leg mount pad; Said supporting leg mount pad comprises the outwardly directed transverse slat of the upper and lower both sides of being located at said first integral arms and the said second integral arms two ends, and said transverse slat is provided with first through hole that is used for hinged said supporting leg.
Preferably, the number of said linking arm is four, and wherein two said linking arms intersect at first tie point, and two other said linking arm intersects at second tie point; Also comprise intermediate arm, the two ends of said intermediate arm are connected with first tie point, second tie point respectively.
Preferably, the number of said linking arm is four, and the end of any said linking arm is connected in the middle part of its first adjacent linking arm, and the end of its second adjacent linking arm is connected in the middle part of this linking arm, so that four linking arms surround quadrangle.
Preferably, the below of said supporting rack also is connected with support arm, and the bottom of said support arm is fixedly connected with said chassis.
Preferably, said turntable frame is fixedly connected with four said linking arms.
Preferably, said second driver part comprises second oscillating oil cylinder and linkage, is 180 ° of expansion so that can drive between the adjacent arm joint.
Preferably, first alternate arm joint and second alternate arm joint during two adjacent arms save are hinged through bearing pin, and first alternate arm saves near said fixedly capstan head; Said linkage comprises first connecting rod and second connecting rod; The butt of one end of said second oscillating oil cylinder and said first alternate arm joint is hinged; Its other end is hinged through the butt of said second connecting rod and said second alternate arm joint; One end of said first connecting rod is articulated in said second connecting rod, and it is terminal hinged that the other end and said first alternate arm save.
Preferably, said horizontal support legs comprises two arm joints, be respectively said butt arm joint and said terminal arm joint, and both is hinged through bearing pin; The butt of said butt arm joint is articulated in the side of linking arm near headstock, and when said horizontal support legs was in folded state, the end of said butt arm joint was positioned at the side near the tailstock, and said terminal arm joint is articulated in the outside of said butt arm joint.
Preferably, have a joint telescopic arm joint in each arm joint of said horizontal support legs at least, said telescopic arm joint comprises outer sleeve, is located at the inner inner sleeve of said outer sleeve and can drives the 3rd driver part that said inner sleeve moves in the inside of said outer sleeve.
Preferably, the number of said support leg device is two, and two said support leg devices are symmetrically set in the front side of said fixedly capstan head;
Said engineering machinery also comprises two rear support leg devices, and said rear support leg device comprises second supporting leg that the straight rod type supporting leg is terminal with being located at said straight rod type supporting leg, and two straight rod type supporting leg symmetries are hinged on the rear side on the said fixedly capstan head;
At the homonymy of said fixedly capstan head, said support leg device, the distance of said rear support leg device between the hinge on the said fixedly capstan head are greater than the distance of two said support leg devices between the hinge on the said fixedly capstan head.
Engineering machinery provided by the present invention, its fixedly capstan head comprise the supporting rack that is fixed in turntable frame below, supporting rack comprises at least two linking arms, the outer end of each linking arm is hinged with the supporting leg of engineering machinery respectively; Two adjacent arbitrarily linking arms intersect, or the extended line of two adjacent linking arms intersects arbitrarily; Horizontal support legs comprises at least two hinged successively arm joints, and is provided with driving this expansion of alternate arm joint and second folding driver part between any two adjacent arm joints; In each arm joint, its butt arm saves with linking arm hinged, and between the two, is provided with first driver part that this butt arm joint of driving launches and folds, and first supporting leg is connected in the end that terminal arm saves in each arm joint.
Adopt the fixedly capstan head of this structure, in the course of work, turntable is connected with the revolution of turntable frame; Supporting leg and above-mentioned linking arm is hinged; Can realize the revolution of jib and to the supporting role of complete machine, the fixedly capstan head of box-structure in the prior art of comparing, the fixedly turret structure of this structure is simplified greatly; Make that fixedly the consumptive material of capstan head reduces, heat dispersion strengthens.In addition, when work, the load on the turntable is directly delivered to fixedly capstan head through the turntable frame, and is delivered to supporting leg through linking arm, and the power conducting path is shorter, and the vibrations of generation are less; Meanwhile, the vibrations that the impact that the concrete piston motion produces brings are also less relatively, strengthened the fixedly shock resistance of capstan head.
This shows that the fixedly capstan head of this structure can play the turntable that connects engineering machinery, the effect of supporting leg equally, and have simple and compact for structurely that shock resistance is strong, thermal diffusivity characteristics preferably.
In concrete scheme; Above-mentioned first driver part can be for being located at fixedly first oscillating oil cylinder between capstan head and the butt arm joint; Second driver part can be 180 ° of expansion so that can drive between the adjacent arm joint for being located at second oscillating oil cylinder and the linkage between butt arm joint and the terminal arm joint.
Adopt this hinged foldable support leg device, only comprising that butt arm joint and the horizontal support legs that terminal arm saves are example, after engineer machinery change field finishes, arrives the job site; When needing to launch this support leg device with propping works machinery; Support leg device is in folded state, at this moment, only needs to drive above-mentioned first oscillating oil cylinder and makes its piston rod protruding; Thereby drive butt arm joint with respect to fixedly capstan head expansion; Drive second oscillating oil cylinder and make its piston rod protruding, launch with respect to butt arm joint, promptly can support leg device be extended to half extended configuration thereby drive terminal arm joint; First oscillating oil cylinder and second oscillating oil cylinder continue to stretch out forward, and when extending extreme position, support leg device is 180 ° of expansion because the acting in conjunction of second oscillating oil cylinder and linkage reaches deployed condition between the promptly adjacent arm joint.
This shows that above-mentioned supporting leg expansion mode is flexible, can select different combinations motion, find the proper supporting point in being convenient on construction ground according to field condition, respectively the saving arm and can move simultaneously of supporting leg, supporting leg launches and regains weak point consuming time; Can select the amplitude of supporting leg expansion according to the operating mode demand under the practical application scene, thus the Area of bearing of adjustment supporting leg; When engineering machinery descends center of gravity circle area occupied big in working order, overlength arm rack concrete pump truck for example, thus the expansion amplitude that needs to increase supporting leg obtains bigger Area of bearing, makes the engineering stability of engineering machinery turn on one's side avoiding more by force; Certainly, for descending the less engineering machinery of center of gravity circle area occupied in working order, only need the control supporting leg to be in half deployed condition and can satisfy the job stability requirement, to satisfy the concrete construction in the small space.In addition, support leg device provided by the invention can also carry out one-sided support according to the requirement of concrete construction environment.
Description of drawings
Fig. 1 is the structural representation of the fixedly capstan head of engineering machinery in the prior art;
Fig. 2 is the structural representation of the support leg device of engineering machinery in the prior art;
Fig. 3 is the structural representation of a kind of specific embodiment of engineering machinery provided by the present invention;
Fig. 4 is the structural representation of a kind of specific embodiment of the fixedly capstan head among Fig. 3;
Fig. 5 is the structural representation of first integral arms of supporting rack among Fig. 4;
Fig. 6 is the structural representation of second integral arms of supporting rack among Fig. 4;
Fig. 7 is the structural representation of X type upper cover plate among Fig. 4;
Fig. 8 is the structural representation of X type lower cover among Fig. 4;
Fig. 9 is the structural representation of the support arm among Fig. 4;
Figure 10 is the structure diagram of the another kind of specific embodiment of the fixedly capstan head of engineering machinery provided by the present invention;
Figure 11 is the structure diagram of another specific embodiment of the fixedly capstan head of engineering machinery provided by the present invention;
Figure 12 is the structural representation of a kind of specific embodiment of the support leg device among Fig. 3;
Vertical view when Figure 13 is in folded state for the support leg device among Figure 12;
Vertical view when Figure 14 is in half extended configuration for the support leg device among Figure 12;
Vertical view when Figure 15 is in deployed condition for the support leg device among Figure 12;
Figure 16 is the in running order vertical view of supporting mechanism of the engineering machinery of Fig. 3;
Figure 17 is the front view of Figure 16;
Figure 18 is in the vertical view of travel position for the supporting mechanism of engineering machinery among Fig. 3;
Figure 19 is the front view of Figure 18;
Figure 20 is the structural representation of the another kind of specific embodiment of the support leg device of engineering machinery provided by the present invention.
Wherein,
Component names and the corresponding relation between the Reference numeral among Fig. 1 are:
Oscillating support leg mount pad 1 "; Telescopic outrigger mount pad 2 ";
Component names and the corresponding relation between the Reference numeral among Fig. 2 are:
Front leg strut device 1 '; Support arm 11 '; Standard arm 12 '; Linking arm 13 '; Supporting leg framework 14 '; Rear support leg device 2 '; Body 3 ';
Component names and the corresponding relation between the Reference numeral among Fig. 3 to Figure 20 are:
Rear support leg device 2; Straight rod type supporting leg 21; Second supporting leg 22;
Turntable 3; Chassis 4;
The specific embodiment
Core of the present invention is for providing a kind of engineering machinery, and it is capstan head and support leg device is all simple in structure, convenient processing and manufacture fixedly, and fixedly capstan head also has little, the light weight of volume, the characteristics that shock resistance and diffusivity are good.
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. 3, Fig. 4 and Figure 12, Fig. 3 is the structural representation of a kind of specific embodiment of engineering machinery provided by the present invention; Fig. 4 is the structural representation of a kind of specific embodiment of the fixedly capstan head among Fig. 3; Figure 12 is the structural representation of a kind of specific embodiment of the support leg device among Fig. 3.
In a kind of specific embodiment, as shown in the figure, engineering machinery provided by the present invention comprises chassis 4 and is located at the fixedly capstan head 5 on the chassis 4.Fixedly capstan head 5 is connected with support leg device 1; Fixedly capstan head 5 comprises turntable frame 51, and turntable frame 51 is connected with the turntable of engineering machinery, also comprises the supporting rack that is fixed in turntable frame 51 belows; Supporting rack comprises at least two linking arms 52, and the outer end of each linking arm 52 is hinged with the supporting leg of engineering machinery respectively; Adjacent arbitrarily two linking arms 52 intersect, or the extended line of two adjacent linking arms 52 intersects arbitrarily.
The support leg device of this project machinery comprises horizontal support legs 11 and first supporting leg 12 that is connected in horizontal support legs 11 ends, and horizontal support legs 11 is used to set Area of bearing, and first supporting leg 12 is used for horizontal support legs 11 is supported in ground; Horizontal support legs 11 comprises two arm joints at least, and each arm joint is hinged successively, and butt arm joint 111 is hinged with supporting rack, and first supporting leg 12 is connected in the end of terminal arm joint 112 in each arm joint.This support leg device also comprises driver part 13; This driver part 13 comprises that being located at being used between supporting rack and the butt arm joint 111 drives expansion of butt arm joint and the first folding driver part, also comprises being located between any two adjacent arms joints being used to drive second driver part that this alternate arm joint launches and folds.
Adopt the fixedly capstan head of this structure, in the course of work, the turntable 3 of engineering machinery is connected with 51 revolutions of turntable frame; Horizontal support legs 11 and above-mentioned supporting rack is hinged; Can realize the revolution of jib and to the supporting role of complete machine, the fixedly capstan head of box-structure in the prior art of comparing, the fixedly turret structure of this structure is simplified greatly; Make that fixedly the consumptive material of capstan head reduces, heat dispersion strengthens.In addition, when work, the load on the turntable 3 of engineering machinery is directly delivered to fixedly capstan head 5 through turntable frame 51, and is delivered to supporting leg through supporting rack, and the power conducting path is shorter, and the vibrations of generation are less; Meanwhile, the vibrations that the impact that the concrete piston motion produces brings are also less relatively, strengthened the fixedly shock resistance of capstan head.
This shows that the fixedly capstan head of this structure can play the turntable that connects engineering machinery, the effect of supporting leg equally, and have simple and compact for structurely that shock resistance is strong, thermal diffusivity characteristics preferably.
In concrete scheme; First driver part of above-mentioned horizontal support legs 11 can be for being located at fixedly first oscillating oil cylinder 131 between capstan head 5 and the butt arm joint 111; Second driver part can be 180 ° of expansion so that can drive between the adjacent arm joint for being located at second oscillating oil cylinder 132 and the linkage between the adjacent two arms joint.
Adopt this hinged foldable support leg device, only comprising that the butt arm joint 111 and the horizontal support legs of terminal arm joint 112 are example, after engineer machinery change field finishes, arrives the job site; When needing to launch this support leg device with propping works machinery; Support leg device is in folded state shown in figure 13, at this moment, only needs to drive above-mentioned first oscillating oil cylinder 131 and makes its piston rod protruding; Thereby drive butt arm joint 111 with respect to fixedly capstan head 5 expansion; Drive second oscillating oil cylinder 132 and make its piston rod protruding, launch with respect to butt arm joint 111, promptly can support leg device be extended to half extended configuration shown in figure 14 thereby drive terminal arm joint 112; First oscillating oil cylinder 131 and second oscillating oil cylinder 132 continue to stretch out forward; When extending extreme position; Support leg device is 180 ° of expansion because the acting in conjunction of second oscillating oil cylinder 132 and linkage reaches deployed condition shown in figure 15 between the promptly adjacent arm joint.
This shows, can select the amplitude of supporting leg expansion according to the operating mode demand under the practical application scene, thus the Area of bearing of adjustment supporting leg; When engineering machinery descends center of gravity circle area occupied big in working order, overlength arm rack concrete pump truck for example, thus the expansion amplitude that needs to increase supporting leg obtains bigger Area of bearing, makes the engineering stability of engineering machinery turn on one's side avoiding more by force; Certainly, for descending the less engineering machinery of center of gravity circle area occupied in working order, only need the control supporting leg to be in half deployed condition and can satisfy the job stability requirement, to satisfy the concrete construction in the small space.In addition, support leg device provided by the invention can also carry out one-sided support according to the requirement of concrete construction environment.When horizontal support legs was deployed into preposition, drive first supporting leg 12 this moment was supported on the ground it downwards, realizes the support to engineering machinery.When engineering machinery fulfils assignment when being about to transport, support leg device is carried out reverse operating, can make it become folded state from deployed condition.
In addition, the support leg device expansion mode of this structure is flexible, selects the different combinations motion according to field condition, can adjust the start point between every adjacent two arms joint arbitrarily, is convenient to find on construction ground the proper supporting point; And each arm joint of supporting leg can be swung simultaneously, and this has practiced thrift the run duration that horizontal support legs launches or shrinks greatly, has improved the operating efficiency of engineering machinery.
Can find out by the above-mentioned course of work; The support leg device of this structure only need be operated first driver part and can parallel hinged horizontal support legs 11 be launched flexibly with second driver part; And operating personnel can select suitable angle, length and Area of bearing according to operating mode in expansion process; Compare supporting rack in the prior art, telescopic oil cylinder is set in the structure in the framework, support leg device provided by the present invention has characteristics simple in structure, easy accessibility.
Need to prove; The above-mentioned specific embodiment does not specifically limit the specific constructive form of supporting rack; Also limit the fixedly connected mode of capstan head 5 and concrete pump chassis, in fact, every employing linking arm 52 connection supporting legs; Play simplified structure, the fixedly capstan head that strengthens shock resistance and thermal diffusivity is all in protection scope of the present invention.
In addition; Above-mentioned support leg device 1 can only comprise butt arm joint 111 and terminal arm joint 112 these two arm joints, can also comprise a plurality of arm joints, and all arm joints are all parallel hinged; Can suitably increase the length of horizontal support legs 11 like this according to factors such as real work topographic features and concrete pumping height; Thereby select the proper supporting area, concrete mixer is supported on the most stable duty, improve the job stability of concrete mixer.Here said " Area of bearing " refers to the area that first supporting leg, 12 bottoms by a plurality of support leg devices 1 surround; Being the control area of engineering machinery supporting mechanism to ground, is not the floor area by first supporting leg, 12 actual contact of each support leg device 1.
In addition, " butt " that is occurred among this paper refers near a fixing end of capstan head 5, and " butt arm joint " refers in the horizontal support legs 11 near the fixing arm joint of capstan head 5; " end " refers to a fixedly end of capstan head 5, and " terminal arm joint " refers in the horizontal support legs 11 away from the fixing arm joint that changes 5 towers; The definition that should be appreciated that these nouns with the accompanying drawing be benchmark and definite, their appearance should not influence protection scope of the present invention.
The specific constructive form of the supporting rack of said fixing capstan head 5 can also further be set.
Please refer to Fig. 5 and Fig. 6, Fig. 5 is the structural representation of first integral arms of supporting rack among Fig. 4; Fig. 6 is the overall structure sketch map of second integral arms of supporting rack among Fig. 4.
In the another kind of specific embodiment, like Fig. 5 and shown in Figure 6, the number of above-mentioned linking arm 52 is four, and four linking arms 52 intersect X type structure; In the X type supporting rack, first integral arms that the linking arm 52 of two positioned opposite is formed in one, second integral arms that the linking arm 52 of two other positioned opposite is formed in one.
In the concrete scheme, first integral arms is surrounded by first riser 521, second riser 522, first upper cover plate and first lower cover, and first integral arms is provided with first notch 5211; Second integral arms is surrounded by the 3rd riser 529, the 4th riser 520, second upper cover plate and second lower cover, and second integral arms is provided with second notch 5201; At the crossover location of X type supporting rack, first notch 5211 cooperates clamping with second notch 5201.Adopt this form of structure, the integral arms that is surrounded by two risers and two cover plates can guarantee the intensity hinged with supporting leg, also have simultaneously simple in structure, and the characteristics of lighter weight, processing and manufacturing process convenient.In addition, cooperate the structure of clamping can guarantee the stationarity of the relative position of first integral arms and second integral arms, four linking arms 52 are on the same horizontal plane, improve the job stability of X type supporting rack through first notch 5211 and second notch 5201.
Two linking arms 52 that are oppositely arranged are set to the feasible fixedly compact conformation of capstan head of integral structure; Intensity is bigger; And fixedly capstan head is whole stressed smooth more at work; The power conducting path further shortens, thereby has further strengthened the fixedly shock resistance and the reliability of structure of capstan head.Certainly, above-mentioned first integral arms and second integral arms are not limited in above-mentioned specific constructive form, can also be the integral arms of other structures.
On the basis of said structure, the specific constructive form of above-mentioned supporting rack can also be set further.Please refer to Fig. 7 and Fig. 8, Fig. 7 is the structural representation of X type upper cover plate among Fig. 4; Fig. 8 is the structural representation of X type lower cover among Fig. 4.
In the scheme further, the X type lower cover 527 that X type upper cover plate 526, the first lower covers that above-mentioned first upper cover plate and second upper cover plate can be formed in one and second lower cover can be formed in one.In the concrete scheme, can earlier first riser 521 and second riser 5252 be surrounded first barrel-like structure, the 3rd riser 529 and the 4th riser 520 are surrounded second barrel-like structure; First notch 5211 that opening makes progress is set in the corresponding position of first riser 521 and second riser 5252, second notch 5201 that Open Side Down is set in the corresponding position of the 3rd riser 529 and the 4th riser 520; Then first barrel-like structure and second barrel-like structure are cooperated clamping in first notch 5211, second notch, 5201 positions, form X type barrel-like structure; Corresponding X type upper cover plate 526, the X type lower cover 527 installed in the upper and lower both sides of X type barrel-like structure finally forms above-mentioned X type supporting rack at last.Like this; X type upper cover plate 526 and X type lower cover 527 cover the upper surface and the lower surface of supporting rack respectively, and this makes the intensity of linking arm 52 further increase, and its structure is compact and reasonable more; At work bigger support force can be provided, further strengthen its intensity and shock resistance.
Further in the scheme, the upper cover plate 526 of above-mentioned X type and the infall of lower cover 527 can also be provided with second through hole 5261 and third through-hole 5271 respectively.When the slewing equipment in being installed on turntable frame 51 is hydraulic control, in the passage that second through hole 5261 that can the transfer pipeline of slewing equipment etc. be arranged on turntable frame 51 belows and third through-hole 5271 form.This arrangement makes that fixedly capstan head comprises more spatial accommodation, has the topology layout advantage of reasonable.
What specify is; " the X type " that occurs among this paper is to describe the shape that four linking arms 52 intersect the supporting rack that forms from macroscopic view; Be not to refer in particular to the X type that the diagonal angle in twos on the geometric meaning equates, but comprise that four angles all equate, the diagonal angle equates or equal " the X types " of unequal general reference of four angles in twos.Therefore, above-mentioned four linking arms 52 intersect in the X type supporting rack that forms, and can two relative linking arms 52 linearly be provided with, and also can above-mentioned two relative linking arms 52 be the broken line setting; In the specific embodiment of the integral arms that above-mentioned relative two linking arms 52 are formed in one; Can an integral arms be set to rectilinear form; Also can an integral arms be set to broken line shape, the user can select the concrete form of X type supporting rack voluntarily according to self needs, actual working environment.
In addition, the front end of above-mentioned turntable frame 51 can also be welded with the installing rack 511 of the reducer that is used to connect engineering machinery, can reducer directly be installed on the front end of turntable frame 51 like this, has made things convenient for the installation of reducer.
In scheme further, can also be fixed with between above-mentioned first riser 521 and second riser 522 between a plurality of gusset 525, the three risers 529 and the 4th riser 520 and also can be fixed with a plurality of gussets 525.Adopt gusset 525 can further increase the intensity of linking arm 52, guarantee its job stability and reliability.
In the another kind of specific embodiment, the two ends of above-mentioned first integral arms and second integral arms are equipped with the supporting leg mount pad, and supporting leg is hinged on the supporting leg mount pad.Particularly, the supporting leg mount pad comprises the outwardly directed transverse slat 524 of the upper and lower both sides of being located at first integral arms and the second integral arms two ends, and transverse slat 524 is provided with first through hole 5241 of the bearing pin that is used for hinged supporting leg.Adopt this structure; When needs are installed supporting leg on fixing capstan head; Only need the end of supporting leg is positioned between the transverse slat 524 of upper and lower both sides, plug-in mounting runs through the vertical bearing pin of supporting leg in above-mentioned first through hole 5241 then, is equipped with the limiting component that supporting restriction bearing pin moves up and down again; Can realize supporting leg and the fixedly installation of capstan head easily, unloading process gets final product on the contrary.This shows, adopt this supporting leg mount pad simple in structure, can realize the installation and removal of supporting leg easily, realize the hinged of fixedly capstan head and supporting leg with comparatively simple mode.Certainly, above-mentioned supporting leg mount pad is not limited in this form of structure, can also be other structures.
The specific constructive form of above-mentioned supporting rack can also further be set.
In the another kind of specific embodiment, above-mentioned X type supporting rack is not limited in and comprises four linking arms 52 and the two integrated form of structure relatively, can also four linking arms be the supporting rack of absolute construction.The user can select as required voluntarily.
In the another kind of specific embodiment; The said fixing capstan head can also only comprise two linking arms 52; Promptly fixedly the part of capstan head still adopts the box structure of prior art; And be connected with two linking arms 52 above that, concrete, two linking arms 52 can be located at fixedly front side, rear side, left side or the right side of capstan head.With respect to prior art, simplified the fixedly structure of capstan head, the supporting rack of these structures can be realized reducing the power conducting path equally, reduces to vibrate, strengthen the function of thermal diffusivity.
In the another kind of specific embodiment, above-mentioned supporting rack can also only comprise that 52, two linking arms 52 of two above-mentioned linking arms are located at that fixedly all can in front side, rear side, left side or the right side of capstan head.The supporting rack of these structures can be realized reducing the power conducting path equally, reduces to vibrate, strengthen the function of thermal diffusivity.
In the another kind of specific embodiment, shown in figure 10, Figure 10 is the structure diagram of the another kind of specific embodiment of fixedly capstan head provided by the present invention; The number of linking arm 52 is four, and wherein two linking arms 52 intersect at first tie point, and two other linking arm 52 intersects at second tie point; Also comprise intermediate arm 528, the two ends of intermediate arm 528 are connected with first tie point, second tie point respectively.
The structure that adopts intermediate arm 528 to connect each linking arm 52 can guarantee each linking arm 52 connection stability; Capstan head can suitably extend fixedly again along the length of the length direction of intermediate arm 528; Be applicable to the engineering machinery of different parameters requirement; Make and the length that when engineering machinery reaches identical Area of bearing, can suitably shorten each supporting leg play the effect of saving cost of production.
In the another kind of specific embodiment, shown in figure 11, Figure 11 is another structure diagram of embodiment more specifically of fixedly capstan head provided by the present invention; The number of the linking arm 52 of above-mentioned supporting rack is four, and the end of any linking arm 52 is connected in the middle part of its first adjacent linking arm, and the end of its second adjacent linking arm is connected in the middle part of this linking arm, surrounds quadrangle at four linking arms 52.
Adopt this structure, each linking arm 52 is adjacent linking arm and connects in many places, can further guarantee the intensity and the job stability of supporting rack.Need to prove that " middle part of linking arm " is not the middle part of refering in particular to linking arm here, but general reference is removed the two-end-point optional position in addition of linking arm.
Please refer to Fig. 9, Fig. 9 is the structural representation of the support arm among Fig. 4.
In the another kind of specific embodiment, as shown in Figure 9, above-mentioned supporting rack below is connected with support arm 53; The lower end of support arm is supported in chassis 4.Adopt this form of structure; Promptly adopt four support arms 53 fixedly the supporting rack of capstan head 5 support certain altitude; This makes four supporting racks centres form hollow structure; This has strengthened the fixedly performance of ventilation and heat dispersion of capstan head 5 greatly, and this space of four supporting rack formation can be used for placing the less parts of other volumes such as fuel tank.This shows that the fixedly capstan head 5 of this structure has compact conformation, and is rationally distributed, and can strengthen the ventilation and heat performance of self.
Certainly, the above-mentioned specific embodiment does not limit the concrete supporting way that support arm 53 is supported in the concrete pump chassis yet, and it can adopt the mode of welding to be fixedly connected, and can also adopt bolt etc. to be fixedly connected on the chassis.Said fixing capstan head 5 is not limited in the said structure form; For example can also the fixing lower surface of the supporting rack of capstan head 5 directly be welded on the chassis 4; Make the vertically highly lower of fixing capstan head 5 like this, further reduce the focus of work of concrete mixer, have job stability preferably.
In the another kind of specific embodiment, in the supporting rack that comprises four linking arms 52, above-mentioned turntable frame 1 can all be fixedly connected with four linking arms 52.Like this, turntable frame 51 is connected with supporting rack in many places, can further strengthen the fixedly intensity of capstan head, guarantees its job stability.
In the concrete scheme, above-mentioned turntable frame 51 can be fixedly connected with supporting rack.For example, the two can be welded in one.Sum up; In the said fixing capstan head 5; All parts all can adopt welding manner to be adjacent parts and be fixedly connected, and the fixedly capstan head 5 that is welded in one has simple in structure, the advantage of convenient processing and manufacture; Guarantee that fixedly capstan head 5 intensity are bigger, and can save a large amount of various coupling assemblings such as bolt and nut.Certainly, in the said fixing capstan head 5, also can adopt adjacent component to be fixedly connected through bolted mode, this fixed connection mode has the characteristics of convenient disassembly.
Further in the scheme, in the above-mentioned supporting rack, can be fixed with stiffener 523 between every adjacent two linking arms 52.Similar with the effect of gusset 525, stiffener 523 can further strengthen the intensity of supporting rack, guarantees in the turntable rotation process the fixedly job stability of capstan head.
The concrete connected mode of aforementioned link mechanism can also further be set.
More specifically, shown in figure 12, defining here that two arms joints in two adjacent arms joints are divided into is first alternate arm joint and second alternate arm joint, and the two is hinged through bearing pin 113, and first alternate arm saves the fixedly capstan head 5 near engineering machinery; Aforementioned link mechanism comprises first connecting rod 133 and second connecting rod 134; The butt of one end of second oscillating oil cylinder 132 and first alternate arm joint is hinged; Its other end is hinged through the butt of second connecting rod 134 and second alternate arm joint; One end of first connecting rod 133 is articulated in second connecting rod 134, and it is terminal hinged that the other end and first alternate arm save.
Adopt the connected mode of this hydraulic cylinder and linkage combination; Oscillating oil cylinder is when the terminal arm joint 112 of driving folds or launches with respect to butt arm joint 111; Linkage has also played the effect of supporting butt arm joint 111 ends; And make that terminal arm joint 112 is more flexible with respect to the motion of butt arm joint 111, strengthened the job stability and the flexibility of support leg device.
Certainly, aforementioned link mechanism is not limited in above-mentioned connected mode, can also first connecting rod 133, second connecting rod 134 and second oscillating oil cylinder, 132 these threes be articulated on the same jointed shaft.Everyly realize through second oscillating oil cylinder 132 and linkage that support leg device that adjacent two arms joint is 180 ° of expansion all should be worked as and belong in protection scope of the present invention.
What specify is, the driving mechanism of above-mentioned support leg device also is not limited only to oscillating oil cylinder, and in the another kind of specific embodiment, above-mentioned first driver part and/or second driver part can also be the gear drive of fluid motor-driven.For example; Hydraulic motor is connected in fixedly on the capstan head 5; On hydraulic motor output shaft, connect driving gear, driving gear is engaged with driven gear, and this driven gear is connected with butt arm joint 111; Then the output speed of hydraulic motor can drive butt arm joint 111 with respect to fixedly capstan head 5 expansion or folding after the transmission of power of gear mechanism.Certainly; Above-mentioned driver part 13 can also be other structures; For example can realize the expansion of each arm joint or folding with the chain-drive mechanism of fluid motor-driven, every horizontal support legs 11 that can drive all should be worked as with respect to fixing capstan head 5 driver parts 13 folding or expansion and belonged in protection scope of the present invention.
The concrete folding mode of the horizontal support legs 11 of above-mentioned support leg device can also further be set.
In the another kind of specific embodiment, shown in figure 18, Figure 18 is the vertical view of the travel position of the supporting mechanism of engineering machinery among Fig. 3; The butt of above-mentioned butt arm joint 111 is articulated in the front side of supporting rack, and horizontal support legs 11 is when being in folded state, and the end of butt arm joint 111 is located at the side near the tailstock, and terminal arm joint 112 is articulated in the outside of butt arm joint 111.
Adopt this folding mode; When engineering machinery needs support leg device to launch,, and be example with the left lower horizontal supporting leg among Figure 18 like Figure 13, Figure 14 and Figure 15; Drive first oscillating oil cylinder 131 and make the elongation of its length, butt arm joint 111 clockwise rotates expansion with respect to fixing capstan head 5; Meanwhile can drive second oscillating oil cylinder 132 and make its length elongation, terminal arm joint 112 rotates counterclockwise expansion with respect to butt arm joint 111.
Such rotation direction makes the leg 11 of level in rotation process; The vestige near linear that the end of terminal arm joint 112 streaks; Terminal arm joint 112 is articulated in the inboard of butt arm joint 111 in the prior art of comparing; Terminal arm joint 112 need streak the folding mode of bigger circular arc when horizontal support legs 11 launched; The horizontal support legs 11 of this folding mode has the advantage of saving the space, makes engineering machinery still can launch freely and close up in less work-yard, strengthens its labor aptitude greatly.In addition; The butt of butt arm joint 111 is articulated in the fixedly front side of capstan head 5; And the end of butt arm joint 111 is located at the rear side of butt, like this horizontal support legs 11 upon deployment, butt arm joint 111 with respect to fixing capstan head 5 in the rear side expansion of the driver's cabin of engineering machinery; Can not interfere, have the space layout advantage of reasonable with driver's cabin.
Certainly, the leg 11 of above-mentioned level is not limited in the folding mode of said structure, can also be other folding mode.
Need to prove that the noun of locality that occurs among this paper " preceding " refers to the direction that the engineering machinery tailstock points to headstock, the i.e. dextrosinistral direction of Figure 18; The noun of locality " back " is then opposite, i.e. from left to right direction among Figure 18; In addition, " clockwise " and " counterclockwise " also be with concrete accompanying drawing serve as the basis set up, their appearance should not influence protection scope of the present invention.
The specific constructive form of above-mentioned horizontal support legs 11 can also further be set.Please refer to Figure 20, Figure 20 is the structural representation of the another kind of specific embodiment of the support leg device of engineering machinery provided by the present invention.
In the another kind of specific embodiment, in each arm joint of above-mentioned support leg device 1, exist a joint to be the telescopic arm joint at least.Shown in figure 20; The terminal arm joint 112 of this horizontal support legs 11 is the telescopic arm joint; It comprises outer sleeve 1122 and inner sleeve 1121; The inside of inner sleeve 1121 telescopically suits and outer sleeve 1122, this telescopic arm joint also comprise driving inner sleeve 1121 sleeve 1122 inner the 3rd driver parts that move outside.Like this, after each arm joint launches relatively, can also be protruding with respect to outer sleeve 1122 through inner sleeve 1121, thus realize bigger Area of bearing, further strengthen the job stability of concrete mixer.Certainly, can also other arm joint be set to the telescopic arm joint in the above-mentioned horizontal support legs 11.
In the scheme, above-mentioned telescopic arm joint can be terminal arm joint more specifically, certainly, can also perhaps be articulated in any insert jib section between butt arm joint and the terminal arm joint for butt arm joint.
The specific constructive form of the support leg device of above-mentioned engineering machinery can also further be set.
Please refer to Figure 16 to Figure 19, Figure 16 is the in running order vertical view of supporting mechanism of the engineering machinery of Fig. 3; Figure 17 is the front view of Figure 16; Figure 18 is in the vertical view of travel position for the supporting mechanism of engineering machinery among Fig. 3; Figure 19 is the front view of Figure 18.
Further, above-mentioned concrete mixer adopts the number of above-mentioned support leg device 1 to be two, and two support leg devices 1 are symmetrically set in the fixedly front side of capstan head 5.
In addition, above-mentioned engineering machinery can also comprise two rear support leg devices 2, and rear support leg device 2 comprises straight rod type supporting leg 21 and is located at straight rod type supporting leg 21 terminal 22, two straight rod type supporting leg 21 symmetries of second supporting leg and is hinged on the rear side on the fixing capstan head 5; At the fixing homonymy of capstan head 5, support leg device 1, rear support leg device 2 distance between the hinge on the fixing capstan head 5 is greater than the distance of two support leg devices 1 between the hinge on the fixing capstan head 5.
Preceding side leg adopts hinged foldable support leg device 1, back side leg to adopt the engineering machinery of straight rod type supporting leg 21; Both made full use of the space of the length direction of engineering machinery; Guarantee that again the car load width of concrete mixer can not exceed the width on chassis; Have compact conformation, rationally distributed, and it is lower to make processing cost.Certainly, above-mentioned support leg device 1 can also all adopt above-mentioned hinged foldable support leg device with four supporting legs of concrete mixer not only for the front side that is installed on concrete mixer.
In addition; Adopt this with the bigger leg structure of distance setting between the rear support leg device 2 of support leg device 1 and its homonymy; When concrete mixer in that its left and right sides gradient is bigger when waiting in other extreme terrain environment operation, front leg strut device 1 that can it is one-sided, rear support leg device 2 launch, and the front leg strut device of opposite side, back straight rod type supporting leg 21 still keep folded state to be located at fixedly capstan head 5 one sides; Thereby realize one-sided support function; Avoided to realize one-sided support defective because the front leg strut of homonymy and rear support leg distance are too near in the prior art, further enlarged the scope of application of concrete mixer, strengthened its job stability and reliability.
In the another kind of specific embodiment, above-mentioned two horizontal support legs 11 and two straight rod type supporting legs 21 all are articulated in four jiaos of fixing capstan head 5 through vertical bearing pin 113, and four vertically highly identical.Adopt this structure; The supporting leg of promptly being located at 5 four jiaos of fixing capstan heads can be not arranged in a crossed manner; Many intersections stack the support leg device 1 of (for example X type), two-layer setting in the prior art of comparing, and this supporting mechanism only comprises individual layer support leg device 1, therefore can utilize vertical space to increase the cross-sectional height of the arm joint of horizontal support legs 11; Thereby suffered stress when effectively reducing supporting leg and supporting further increases the job stability of concrete mixer; In addition, the support leg devices such as existing X type of comparing, of the present invention leg length do not receive the restriction of concrete pump vehicle-width, makes the length of supporting mechanism suitably to extend, so the engineering machinery of said structure has compact conformation, rationally distributed advantage.
More specifically, above-mentioned engineering machinery can be specially concrete mixer.Need to prove; The above-mentioned specific embodiment only is the useful technique effect that example has specifically been introduced the engineering machinery that comprises above-mentioned support leg device 1 with the concrete mixer; In fact, above-mentioned support leg device 1 only for being used for concrete mixer, can also not be used for Other Engineering machineries such as crane.
More than a kind of engineering machinery provided by the present invention has 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 (15)
1. engineering machinery; Comprise chassis (4) and be located at the fixedly capstan head (5) on the said chassis (4); Said fixedly capstan head (5) is connected with support leg device (1), and said support leg device (1) comprises horizontal support legs (11) and is connected in terminal first supporting leg (12) of said horizontal support legs (11); It is characterized in that,
Said fixedly capstan head (5) comprises turntable frame (51); Said turntable frame (51) is connected with the turntable (3) of said engineering machinery; Also comprise the supporting rack that is fixed in said turntable frame (51) below; Said supporting rack comprises at least two linking arms (52), and the outer end of each said linking arm (52) is hinged with said horizontal support legs (11) respectively; Adjacent arbitrarily two said linking arms (52) intersect, or the extended line of adjacent two said linking arms (52) intersects arbitrarily;
Said horizontal support legs (11) comprises at least two hinged successively arm joints, and is provided with driving this expansion of alternate arm joint and second folding driver part between any two adjacent arm joints; In each arm joint; Its butt arm joint (111) is hinged with said linking arm (52); And between the two, be provided with first driver part that drives this butt arm joint (111) expansion and fold, and said first supporting leg (12) is connected in the end of terminal arm joint (112) in each arm joint.
2. engineering machinery according to claim 1 is characterized in that, the number of said linking arm (52) is four, and four said linking arms (52) intersect X type supporting rack; First integral arms that the said linking arm (52) of two positioned opposite is formed in one, second integral arms that the said linking arm (52) of two other positioned opposite is formed in one.
3. engineering machinery according to claim 2 is characterized in that, said first integral arms is surrounded by first riser (521), second riser (522), first upper cover plate and first lower cover, and said first integral arms is provided with first notch (5211);
Said second integral arms is surrounded by the 3rd riser (529), the 4th riser (520), second upper cover plate and second lower cover, and said second integral arms is provided with second notch (5201);
At the crossover location of said X type supporting rack, said first notch (5211) cooperates clamping with said second notch (5201).
4. engineering machinery according to claim 3 is characterized in that, the X type upper cover plate (526) that said first upper cover plate and said second upper cover plate are formed in one, the X type lower cover (527) that said first lower cover and said second lower cover are formed in one.
5. engineering machinery according to claim 4 is characterized in that, interconnection place of said X type upper cover plate (526) is provided with second through hole (5261), and interconnection place of said X type lower cover (527) is provided with third through-hole (5271).
6. engineering machinery according to claim 2 is characterized in that, the two ends of said first integral arms and said second integral arms are equipped with the supporting leg mount pad; Said supporting leg mount pad comprises the outwardly directed transverse slat (524) of the upper and lower both sides of being located at said first integral arms and the said second integral arms two ends, and said transverse slat (524) is provided with first through hole (5241) that is used for hinged said supporting leg.
7. engineering machinery according to claim 1 is characterized in that, the number of said linking arm (52) is four, and wherein two said linking arms (52) intersect at first tie point, and two other said linking arm (52) intersects at second tie point; Also comprise intermediate arm (528), the two ends of said intermediate arm (528) are connected with first tie point, second tie point respectively.
8. engineering machinery according to claim 1; It is characterized in that; The number of said linking arm (52) is four; The end of any said linking arm (52) is connected in the middle part of its first adjacent linking arm, and the end of its second adjacent linking arm is connected in the middle part of this linking arm, so that four linking arms (52) surround quadrangle.
9. according to each described engineering machinery of claim 1-8, it is characterized in that the below of said supporting rack also is connected with support arm (53), the bottom of said support arm (53) is fixedly connected with said chassis (4).
10. according to each described engineering machinery of claim 2-8, it is characterized in that; Said turntable frame (51) is fixedly connected with four said linking arms (52).
11., it is characterized in that said second driver part comprises second oscillating oil cylinder (132) and linkage according to each described engineering machinery of claim 1-8, be 180 ° of expansion so that can drive between the adjacent arm joint.
12. engineering machinery according to claim 11 is characterized in that, first alternate arm joint and second alternate arm joint during two adjacent arms save are hinged through bearing pin (113), and first alternate arm saves near said fixedly capstan head (5); Said linkage comprises first connecting rod (133) and second connecting rod (134); The butt of one end of said second oscillating oil cylinder (132) and said first alternate arm joint is hinged; Its other end is hinged with the butt of said second alternate arm joint through said second connecting rod (134); One end of said first connecting rod (133) is articulated in said second connecting rod (134), and it is terminal hinged that the other end and said first alternate arm save.
13., it is characterized in that said horizontal support legs (11) comprises two arm joints, be respectively said butt arm joint (111) and said terminal arm joint (112), and both is hinged through bearing pin (113) according to each described engineering machinery of claim 1-8; The butt of said butt arm joint (111) is articulated in the side of linking arm (52) near headstock; At said horizontal support legs (11) when being in folded state; The end of said butt arm joint (111) is positioned at the side near the tailstock, and said terminal arm joint (112) is articulated in the outside of said butt arm joint (111).
14. according to each described engineering machinery of claim 1-8; It is characterized in that; At least there is a joint telescopic arm joint in each arm joint of said horizontal support legs (11); Said telescopic arm joint comprises outer sleeve (1122), is located at the inner inner sleeve (1121) of said outer sleeve (1122) and can drives the 3rd driver part that said inner sleeve (1121) moves in the inside of said outer sleeve (1122).
15., it is characterized in that the number of said support leg device (1) is two according to each described engineering machinery of claim 1-8, two said support leg devices (1) are symmetrically set in the front side of said fixedly capstan head (5);
Said engineering machinery also comprises two rear support leg devices (2); Said rear support leg device (2) comprises straight rod type supporting leg (21) and is located at terminal second supporting leg (22) of said straight rod type supporting leg (21) that two straight rod type supporting legs (21) symmetry is hinged on the rear side on the said fixedly capstan head (5);
At the homonymy of said fixedly capstan head (5), said support leg device (1), the distance of said rear support leg device (2) between the hinge on the said fixedly capstan head (5) are greater than the distance of two said support leg devices (1) between the hinge on the said fixedly capstan head (5).
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| CN103010179A (en) * | 2012-12-10 | 2013-04-03 | 三一重工股份有限公司 | Engineering machinery outrigger and concrete pump truck |
| 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 |
| CN103612621A (en) * | 2013-11-25 | 2014-03-05 | 中联重科股份有限公司 | Engineering vehicle and supporting leg device thereof |
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| CN111188414B (en) * | 2018-11-15 | 2021-06-18 | 国网湖南省电力有限公司 | Modular living room |
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| CN111851290A (en) * | 2020-07-27 | 2020-10-30 | 内蒙古农业大学 | Geotechnical bridge railing concrete pouring device capable of shifting in four directions |
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