CN102518309A - Arm support device and arm support type engineering machine - Google Patents
Arm support device and arm support type engineering machine Download PDFInfo
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- CN102518309A CN102518309A CN201210006093XA CN201210006093A CN102518309A CN 102518309 A CN102518309 A CN 102518309A CN 201210006093X A CN201210006093X A CN 201210006093XA CN 201210006093 A CN201210006093 A CN 201210006093A CN 102518309 A CN102518309 A CN 102518309A
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Abstract
The invention provides an arm support device used for an engineering machine. The arm support device comprises multiple segments of arm supports which are sequentially hinged, wherein the bottom end of a first-segment arm support is hinged with a turnplate of the engineering machine at a basic hinge point; when each arm support is in a folded state, the arm support device at least occupies three rows of arrangement spaces, the first-segment arm support is a straight arm support occupying a first row of arrangement space, and the other rows of arrangement spaces of the arm support device are located at two sides of the first segment arm support. The arm support device is compact in structure, sufficiently utilizes the width of a vehicle body, provides spaces for arrangement of the multiple segments of arm supports, and can fold more numbers of arm supports in the identical folding spaces, thus the total length of the arm support device is increased and the material distribution flexibility of the arm support is improved. In addition, the invention also discloses an arm support type engineering machine with the arm support device.
Description
Technical field
The present invention relates to technical field of engineering machinery, relate in particular to a kind of boom device.The invention still further relates to a kind of boom type engineering machinery with above-mentioned boom device.
Background technology
Concrete mixer is a kind of typical boom type engineering machinery, can concrete be arrived the construction work desired position along line transportation.In the course of the work, concrete mixer need through be fixed in carrier pipe on the boom device with transmission and concrete transmission to assigned address, and along with the variation of transfer position, boom device need drive carrier pipe and realize actions such as expansion, gathering and rotation.The boom device of concrete mixer generally comprises the more piece jib, and each saves between the jib and can fold.
The employed folding mode of jib of concrete mixer mainly contains foldable integral modes such as R type, Z type and RZ type at present, and wherein the boom device for the above jib of five joints basically all uses RZ type folding mode.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the folding sketch map of a kind of typical boom device in the prior art; Fig. 2 is the vertical view of boom device shown in Figure 1.
The first segment jib 1 ' of boom device is hinged with turntable; First segment jib 1 ', the second joint jib 2 ' and the 3rd joint jib 3 ' are folded into the R type; The 3rd joint jib 3 ' is the jib that turns round; The 3rd joint jib 3 ', the 4th joint jib 4 ' and the 5th joint jib 5 ' are folded into the Z type, and the 5th joint jib 5 ' is folded to the top of the 4th joint jib 4 '.Yet; The space of the 4th joint jib 4 ' top is limited; For preventing that jib from folding superelevation, in the concrete mixer of six joint arms, the 6th joint jib 6 ' and the 5th joint jib 5 ' are arranged along same horizontal direction in order in the prior art; And be folded to above the 4th joint jib 4 '; Promptly the 5th joint jib 5 ' and the 6th joint jib 6 ' are equivalent to the 5th joint jib of five joint arm pump trucks in the prior art, compare with the boom device of five joint arm pump trucks in the prior art, and the total length of the boom device of above-mentioned six joint arm pump trucks does not change in fact.
And the arrangement of boom device is unfavorable for being provided with the above jib of six joints in the prior art, and the flexibility of boom device is poor.
Therefore, how under the prerequisite that satisfies the concrete pump truck pumping demand, fully, effectively utilize folding space, realize the layout of single oil cylinder, reduce length over ends of body, and increase the total length of boom device, become the technical barrier that those skilled in the art need to be resolved hurrily.
Summary of the invention
First purpose of the present invention provides a kind of boom device, and this boom device compact conformation, space availability ratio are high, for the layout of more piece jib provides the space, thereby increases the total length of boom device, and the cloth flexibility that improves jib.Second purpose of the present invention provides a kind of boom type engineering machinery with above-mentioned boom device.
In order to realize above-mentioned first purpose, the invention provides a kind of boom device, be used for engineering machinery; Comprise hinged successively more piece jib; The butt of first segment jib and the turntable of said engineering machinery are articulated in basic pin joint, and when each said jib was in folded state, said boom device occupied three row arrangement space at least; Said first segment jib is the straight-arm frame that occupies the first row arrangement space, and each row arrangement space of other of said boom device is distributed in the both sides of first segment jib.
Preferably, when each said jib was in folded state, said boom device occupied three row arrangement space, and wherein, secondary series arrangement space, the 3rd row arrangement space are distributed in the both sides of first segment jib;
In each said jib the first adjacent jib is set and the second adjacent jib is articulated and connected, the first adjacent jib occupies the secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; The said first adjacent jib comprises first straight arm section and second straight arm section that is rotationally connected, and said second straight arm section can be with respect to first straight arm section around the predetermined angle of both rotational.
Preferably, be provided with rotary flange between said first straight arm section and second straight arm section, both are rotationally connected through rotary flange.
Preferably, the said second adjacent jib is near the afterbody of said boom device, and the second adjacent jib and the hinged end of second straight arm section are bend.
Preferably, said bend comprises the 3rd straight arm section and first section of turning round, and the 3rd straight arm section and second straight arm section are hinged; When each said jib was in folded state, the 3rd straight arm section was folded to the first row arrangement space.
Preferably, said bend is the arc-shaped bend structure.
Preferably, with respect to said basic pin joint, the pin joint of the said first adjacent jib and the said second adjacent jib is near driver's cabin one side of said engineering machinery.
Preferably, with respect to said basic pin joint, being rotationally connected a little of first straight arm section and second straight arm section near driver's cabin one side of said engineering machinery.
Preferably, said boom device comprises six joint jibs at least, and the said first adjacent jib, the second adjacent jib are respectively the 5th joint jib, the 6th joint jib; The 3rd joint jib is the jib that turns round that occupies two row arrangement space, comprises the 4th straight arm section, second section of turning round and the 5th straight arm section;
First segment jib, the second joint jib, the 4th straight arm section occupy the first row arrangement space, and the 5th straight arm section, the 4th joint jib, the 5th joint jib occupy the secondary series arrangement space, and the 6th joint jib occupies the 3rd row arrangement space.
Preferably, first segment jib, the second joint jib, the 3rd joint jib are folded into the R type, and the second joint jib, the 3rd joint jib, the 4th joint jib are folded into the Z type, and the 4th joint jib and the 5th joint jib are arranged along same length direction.
Preferably, also comprise the 7th the joint jib, said the 7th the joint jib occupies the 3rd row arrangement space, and be folded to said the 6th the joint jib above or below.
Boom device provided by the present invention; Be used for engineering machinery, comprise hinged successively more piece jib, the butt of first segment jib and the turntable of said engineering machinery are articulated in basic pin joint; When each said jib is in folded state; Said boom device occupies three row arrangement space at least, and said first segment jib is the straight-arm frame that occupies the first row arrangement space, and each row arrangement space of other of said boom device is distributed in the both sides of first segment jib.
When boom device provided by the present invention folded, each column distribution of other in the boom device had made full use of the arrangement space of first segment jib both sides in the both sides in the occupied space of first segment jib; Promptly make full use of the space of width of the carbody direction, compared with prior art, the boom device compact conformation among this paper; Make full use of width of the carbody; For the layout of more piece jib provides the space, in identical folding space, number that can foldable arm rack is more; Thereby increased the total length of boom device, and avoided through increasing the vehicle bridge number to improve Performance Match problem and the expensive problem that jib length causes; And when in same folding space, arranging the jib of identical joint number, respectively saving jib in this boom device can the bigger space of distribution ratio, can on jib, increase transmission or driving mechanism, helps improving the cloth flexibility of jib.
Additionally, the arrangement of the boom device among the present invention can be alleviated the problem of prior art boom device arranged off-centre on car body, helps increasing the stability that vehicle is exercised.
In order to realize above-mentioned second purpose; The present invention also provides a kind of boom type engineering machinery; Comprise the chassis and be arranged at the boom device on the said chassis; Said boom device is above-mentioned each described boom device, because above-mentioned boom device has above-mentioned technique effect, the engineering machinery with this boom device also should have the corresponding techniques effect.
A kind of preferred scheme, when each said jib was in folded state, said boom device occupied three row arrangement space, and wherein, secondary series arrangement space, the 3rd row arrangement space are distributed in the both sides of first segment jib; In each said jib, the first adjacent jib and the second adjacent jib are articulated and connected, and the first adjacent jib occupies the secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; The first adjacent jib comprises be rotationally connected first straight arm section and second straight arm section, and said second straight arm section can be with respect to first straight arm section around the predetermined angle of both rotational.Through this jib set-up mode; In the boom device expansion process; First straight arm section rotates predetermined angle thereby drive the second adjacent jib that is in the 3rd row arrangement space, so that the second alternate arm chord position is in the top of the vertical position of the first adjacent jib with respect to the rotational of second straight arm section around both; And then the jib that respectively saves of second adjacent jib place row launched successively, be convenient to that the overlength jib is opened or folding in smaller space.
A kind of preferred scheme is provided with rotary flange between said first section and said second section, and both are rotationally connected through said rotary flange; Rotary flange weight is low weight, not only can reduce jib weight, and institute takes up space smaller, operation flexibility and reliability than higher.
Description of drawings
Fig. 1 is the folding sketch map of a kind of typical boom device in the prior art;
Fig. 2 is the vertical view of boom device shown in Figure 1;
Fig. 3 is in the structural representation of folded state for boom device in a kind of practical implementation provided by the present invention;
Fig. 4 is the vertical view of boom device shown in Figure 3;
Fig. 5 is boom device expansion process shown in Figure 3 state diagram constantly;
Fig. 6 is a vertical view shown in Figure 5.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 1 and Fig. 2:
First segment jib 1 '; The second joint jib 2 '; The 3rd joint jib 3 '; The 4th joint jib 4 '; The 5th joint jib 5 '; The 6th joint jib 6 '.
Wherein, the corresponding relation between Reference numeral and the component names is among Fig. 3 to Fig. 7:
The specific embodiment
The object of the invention purport is for providing a kind of boom device, and this boom device compact conformation, space availability ratio are high, for the layout of more piece jib provides the space, thereby increases the total length of boom device, and the cloth flexibility that improves jib.In addition, the another object of the present invention purport is that a kind of boom type engineering machinery that comprises above-mentioned boom device is provided.
Be without loss of generality, this paper is applied as example with boom device on concrete mixer, introduce technical scheme of the present invention, it will be understood by those skilled in the art that and does not also get rid of the application of the present invention on other boom type engineering machinery.
In order to make those skilled in the art better understand technical scheme of the present invention, the present invention is done further detailed description below in conjunction with the accompanying drawing and the specific embodiment.
Please referring to Fig. 3 to Fig. 6, Fig. 3 is in the structural representation of folded state for boom device in a kind of practical implementation provided by the present invention; Fig. 4 is the vertical view of boom device shown in Figure 3; Fig. 5 is boom device expansion process shown in Figure 3 state diagram constantly; Fig. 6 is a vertical view shown in Figure 5.
Boom device provided by the present invention is used for engineering machinery, and it comprises hinged successively more piece jib, between adjacent two joint jibs, generally can be provided with telescopic oil cylinder, is used to carry out the expansion of jib or draws action in.
In this application; The butt of first segment jib 1 and the turntable of engineering machinery 8 are articulated in basic pin joint; When each said jib is in folded state; This boom device is folded into three row at least, and said first segment jib 1 is for occupying the straight-arm frame of the first row arrangement space, and each row arrangement space of other of this boom device is distributed in the both sides of first segment jib 1.
When boom device provided by the present invention folded, each column distribution of other in the boom device had made full use of the space of first segment jib 1 both sides in the both sides in first segment jib 1 occupied space; Promptly make full use of the space of width of the carbody direction, compared with prior art, the boom device compact conformation among this paper; Make full use of width of the carbody; For the layout of more piece jib provides the space, in identical folding space, number that can foldable arm rack is more; Thereby increased the total length of boom device, and avoided through increasing the vehicle bridge number to improve Performance Match problem and the expensive problem that jib length causes; And when in same folding space, arranging the jib of identical joint number, respectively saving jib in this boom device can the bigger space of distribution ratio, can on jib, increase transmission or driving mechanism, helps improving the cloth flexibility of jib.
The arrangement of the boom device among the present invention can be alleviated the problem of prior art boom device arranged off-centre on car body, helps increasing the stability that vehicle is exercised.
A kind of preferred embodiment in, when each said jib was in folded state, said boom device occupied three row arrangement space, wherein, secondary series arrangement space, the 3rd row arrangement space are distributed in the both sides of first segment jib 1.
In each said jib, define the first adjacent jib and the second adjacent jib is articulated and connected, the first adjacent jib occupies the secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; The said first adjacent jib comprises first straight arm section and second straight arm section, and second straight arm section and the second adjacent jib are hinged, and said second straight arm section can be with respect to first straight arm section around the predetermined angle of both rotational.Through above-mentioned jib set-up mode; In the boom device expansion process; First straight arm section is with respect to the rotational of second straight arm section around both, thereby the 3rd row arrangement space that drives the second adjacent jib place strides across the first segment jib, and is positioned at the homonymy of the first adjacent jib; Above-mentioned rotation predetermined angular can be 90 degree, also can be the numerical value about 90 degree.
This preferred embodiment in; Set suitable rotation predetermined angular according to the real space situation; When boom device carries out jib when launching from folded state; Can drive the axis rotation predetermined angular of relative first straight arm section of second straight arm section earlier, thereby the 3rd row arrangement space that drives the second adjacent jib place strides across the first segment jib, makes each row arrangement space of this boom device all be positioned at the homonymy of first segment jib 1 around both.In the concrete application process; Relative first straight arm section of second straight arm section revolves around both axis and turn 90 degrees; The 3rd row arrangement space that drives the second adjacent jib place turns to the top of the first adjacent jib; Make this boom device be in two row arrangement space, and then the jib that respectively saves of the second adjacent jib place row is launched successively; When boom device completion pumpdown folds, only need aforesaid operations is carried out reverse operating, can accomplish the folding of jib; This set-up mode is convenient to that jib is opened or is folding in smaller space.
A kind of preferred embodiment in; Can be provided with rotary flange 9 between first straight arm section and second straight arm section; Both are rotationally connected through rotary flange 9; Rotary flange 9 weight are low weight, not only can reduce jib weight, and institute takes up space smaller, operation flexibility and reliability than higher.
Certainly, the counterrotating realization of first straight arm section and second straight arm section also can realize by miscellaneous part, and the setting that is nested of first straight arm section and second straight arm section can also be set, and in both coincidence zones modes such as floating bearing is set.Need to prove that first straight arm section or second straight arm section can also be according to the concrete further segmentations of folding convenient situation.
Particularly; The second adjacent jib is near the afterbody of said boom device; And the hinged end of the second adjacent jib and second straight arm section is a bend, is under the folded state at each said jib, through the bend of the second alternate arm frame end portion; Realize being connected of secondary series arrangement space and the 3rd row arrangement space, so that the second adjacent jib strides across the first segment jib and is arranged in the 3rd row arrangement space.
Among above-mentioned each embodiment, bend can comprise the 3rd straight arm section and first section of turning round, and the 3rd straight arm section and second straight arm section are hinged; When each said jib is in folded state, the 3rd straight arm section and first segment jib 1 is set all occupies the first row arrangement space; Through the space that bend can make full use of first segment jib 1 occupied row front-end and back-end rationally being set, the length of the second adjacent jib that suitably extends.
Certainly, also can be set to the arc-shaped bend structure by bend, this mode processing technology is fairly simple, and the second adjacent jib is processed easily.
A kind of preferred embodiment in, with respect to said basic pin joint, the pin joint of the first adjacent jib and the second adjacent jib can be near driver's cabin one side of engineering machinery.In another preferred embodiment, with respect to said basic pin joint, being rotationally connected of first straight arm section and second straight arm section a little can be near driver's cabin one side of said engineering machinery.
Through above-mentioned set-up mode; The first adjacent jib can extend near driver's cabin one side to basic pin joint, thereby increases the length of the first adjacent jib, and the length of the corresponding second adjacent jib has also obtained increase; Make full use of the space of driver's cabin top, thereby increase the total length of boom device.
The balance of car body when being in folded state in order further to increase boom device; Because this boom device is arranged in the both sides of first segment jib 1; Can be on the width of engineering machinery with the basic pin joint of the butt of first segment jib 1 and turntable 8, the cheap amount of the centre of gyration of its relative turntable is zero, it is evenly stressed to be convenient to folding each one of aftercarriage of each jib; Further improve eccentricity issues, increase the safety of vehicle '.
On the basis of above-mentioned boom device, in concrete design, a kind of boom device that the present invention proposes can comprise at least six joint jibs, and the first adjacent jib, the second adjacent jib are respectively the 5th and save jib 5, the 6th joint jib 6; The 3rd joint jib 3 comprises the 4th straight arm section, second section of turning round and the 5th straight arm section for occupying the jib that turns round of two row arrangement space; First segment jib 1, the second joint jib 2, the 4th straight arm section occupy the first row arrangement space, and the 5th straight arm section, the 4th joint jib the 4, the 5th save jib 5 and occupy the secondary series arrangement space, and the 6th joint jib 6 occupies the 3rd row arrangement space; The 5th joint jib 5 comprises that first straight arm section 51 that can connect around its rotational and second straight arm section, 52, the first straight arm sections 51 are connected through rotary part with second straight arm section 52, and both difference the hinged the 4th save jibs 4 and the 6th and save jib 6; The 6th joint jib 6 is a bend with the end that the 5th joint jib 5 is connected; This bend can comprise the 3rd straight arm section 61 and first section of turning round 63; The 3rd straight arm section 61 and second straight arm section 52 are hinged; For the convenience of describing; The straight arm section that is arranged in the 3rd row arrangement space in the 6th joint jib 6 is defined as the 6th straight arm section 62, realizes being connected of secondary series arrangement space and the 3rd row arrangement space, so that the 6th joint jib 6 strides across first segment jib 1 and is arranged in the 3rd row arrangement space through bend is set.
In the above-described embodiments, when boom device is under the folded state, please refer to Fig. 3 and Fig. 4; When carrying out the jib expansion; Second straight arm section, 52 relative first straight arm sections 51 that can drive the 5th joint jib 5 earlier revolve around its axis and turn 90 degrees; The 6th joint jib 6 that is connected with second straight arm section 52 simultaneously turns to the vertical position top of the 5th joint jib 5; Respectively save jib then and launch successively, please refer to Fig. 5 and Fig. 6; When boom device completion pumpdown folds, only need aforesaid operations is carried out reverse operating, can accomplish the folding of jib.
In a kind of specific embodiment; Boom device can comprise at least six joint jibs; Secondary series arrangement space and the 3rd row arrangement space are positioned at the both sides of the said first segment jib 1 residing first row arrangement space, and the secondary series arrangement space is connected with the 6th joint jib 6 through the 5th joint jib 5 with the 3rd row arrangement space, and the 3rd joint jib 3 can be the jib that turns round; Provided the folding mode of several kinds of boom devices below, particular content is described below.
In first kind of specific embodiment, first segment jib 1, the second joint jib the 2, the 3rd save jib 3 and can be folded into the R type, and the second joint jib the 2, the 3rd saves jib 3, the 4th joint jib 4 can be folded into the Z type.
In second kind of specific embodiment; First segment jib 1, the second joint jib the 2, the 3rd save jib 3 and also can be folded into the Z type; The second joint jib the 2, the 3rd saves jib 3, the 4th joint jib 4 can be folded into the R type; The 3rd joint jib the 3, the 4th saves jib 4, the 5th joint jib 5 also can be folded into the Z type; At this moment the link position of the 5th joint jib 5 and the 6th joint jib 6 is near the hinged end of the first segment jib 1 and the second joint jib 2, and the 5th joint jib 5 and the 6th joint jib 6 can be taked the description setting among above-mentioned each embodiment.
No matter take which kind of folding mode; With prior art six joint jibs the 6th joint jib 6 and the 5th being saved jib 5 is arranged on the same length direction and compares; The 6th joint jib 6 can be arranged in one separately and lists in the present embodiment; Help increasing the length of the 5th joint jib 5 and the 6th joint jib 6, thereby increase the total length of boom device, the operation field of widening concrete mixer.
A kind of preferred embodiment in; First segment jib 1, the second joint jib the 2, the 3rd save jib 3 and can be folded into the R type; The second joint jib 2, the 3rd joint jib 3, the 4th joint jib 4 can be folded into the Z type, and the 4th joint jib 4 can arrange along same length direction with the 5th joint jib 5, and the 5th saves jib 5 and can extend as far as possible in this jib arrangement; Make its folding back part can be arranged in the top of concrete mixer driver's cabin; Not only can utilize the driver's cabin superjacent air space brachium of the 5th joint jib 5 and the 6th joint jib 6 that extends, and the bracing or strutting arrangement of jib can be set on the driver's cabin roof, the increase jib is in the stability of folded state.
In a kind of preferred embodiment; On above-mentioned each boom device architecture basics; Can continue to increase the jib number, boom device can comprise at least seven joint jibs, and the 7th joint jib 7 is between said the 6th joint jib 6 residing the 3rd row arrangement space and the said first segment jib 1 first row arrangement space of living in; Can further make full use of the space between the two row jibs, increase the integrally-built compactedness of boom device.
Certainly, the 7th joint jib 7 can also occupy the 3rd row arrangement space by the 7th joint jib 7, and is arranged in the upside or the downside of the 6th joint jib 6, launches smoothly as long as can realize.
Only be described with the arrangement of several kinds of representative boom devices among this paper, more the folding mode of more piece jib is enumerated at this no longer one by one.
Certainly, described in this paper in the boom device quantity of jib not only be confined to seven joint jibs, can also be more piece jib more; For example eight save jibs; In the boom device of eight joint jibs, the folding mode of the first seven joint jib can be the folding mode of describing among above-mentioned arbitrary embodiment, and the arrangement of the 7th joint jib 7 and the 8th joint jib can be arranged according to the use needs of concrete mixer; For example when jib is in folded state; The 8th joint jib is arranged in the downside or the upside of the 7th joint jib 7 or is folded on the same horizontal plane, compares with the concrete mixer of seven joint boom devices, and eight joint jibs have than higher operation flexibility.
In various embodiments of the present invention, it is all identical that so-called R type folds the folding direction that is one joint jib last relatively joint jib in back in this group foldable arm rack; It is opposite successively that so-called Z type folds the folding direction that is one joint jib last relatively joint jib in back in this group foldable arm rack.
The present invention also provides a kind of boom type engineering machinery, comprises the chassis and is arranged at the boom device on the said chassis, and said boom device is the boom device described in above-mentioned arbitrary embodiment.Because above-mentioned boom device has above-mentioned technique effect, the engineering machinery with this boom device also should have the corresponding techniques effect.
A kind of preferred embodiment in, above-mentioned boom type engineering machinery can be concrete mixer.
In addition, the technical characterictic of other parts of this concrete mixer can repeat no more at this referring to prior art.
More than a kind of boom device provided by the present invention and boom type engineering machinery have been carried out detailed introduction.The above only is the description of the preferred implementation of invention; Should be pointed out that finiteness, and objectively have unlimited concrete structure owing to literal expression; For those skilled in the art; Under the prerequisite that does not break away from the principle of the invention, can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (12)
1. a boom device is used for engineering machinery, comprises hinged successively more piece jib; The butt of first segment jib (1) and the turntable of said engineering machinery are articulated in basic pin joint; It is characterized in that when each said jib was in folded state, said boom device occupied three row arrangement space at least; Said first segment jib (1) is for occupying the straight-arm frame of the first row arrangement space, and each row arrangement space of other of said boom device is distributed in the both sides of first segment jib (1).
2. boom device according to claim 1 is characterized in that, when each said jib was in folded state, said boom device occupied three row arrangement space, and wherein, secondary series arrangement space, the 3rd row arrangement space are distributed in the both sides of first segment jib (1);
In each said jib the first adjacent jib is set and the second adjacent jib is articulated and connected, the first adjacent jib occupies the secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; The said first adjacent jib comprises first straight arm section and second straight arm section that is rotationally connected, and said second straight arm section can be with respect to first straight arm section around the predetermined angle of both rotational.
3. boom device according to claim 2 is characterized in that, is provided with rotary flange between said first straight arm section and second straight arm section, and both are rotationally connected through rotary flange.
4. according to claim 2 or 3 described boom devices, it is characterized in that the said second adjacent jib is near the afterbody of said boom device, and the second adjacent jib and the hinged end of second straight arm section are bend.
5. boom device according to claim 4 is characterized in that, said bend comprises the 3rd straight arm section and first section of turning round, and the 3rd straight arm section and second straight arm section are hinged; When each said jib was in folded state, the 3rd straight arm section was folded to the first row arrangement space.
6. according to claim 2 a described boom device, it is characterized in that said bend is the arc-shaped bend structure.
7. according to each described boom device of claim 2 to 6, it is characterized in that with respect to said basic pin joint, the pin joint of the said first adjacent jib and the said second adjacent jib is near driver's cabin one side of said engineering machinery.
8. boom device according to claim 7 is characterized in that, with respect to said basic pin joint, and being rotationally connected a little of first straight arm section and second straight arm section near driver's cabin one side of said engineering machinery.
9. according to each described boom device of claim 2 to 8, it is characterized in that said boom device comprises six joint jibs at least, the said first adjacent jib, the second adjacent jib are respectively the 5th joint jib (5), the 6th joint jib (6); The 3rd joint jib (3) comprises the 4th straight arm section, second section of turning round and the 5th straight arm section for occupying the jib that turns round of two row arrangement space;
First segment jib (1), the second joint jib (2), the 4th straight arm section occupy the first row arrangement space, and the 5th straight arm section, the 4th joint jib (4), the 5th joint jib (5) occupy the secondary series arrangement space, and the 6th joint jib (6) occupies the 3rd row arrangement space.
10. boom device according to claim 9; It is characterized in that; First segment jib (1), the second joint jib (2), the 3rd joint jib (3) are folded into the R type; The second joint jib (2), the 3rd joint jib (3), the 4th joint jib (4) are folded into the Z type, and the 4th joint jib (4) is arranged along same length direction with the 5th joint jib (5).
11. boom device according to claim 9 is characterized in that, also comprise the 7th the joint jib (7), said the 7th the joint jib (7) occupies the 3rd row arrangement space, and be folded to said the 6th the joint jib (6) above or below.
12. an engineering machinery comprises the chassis and is arranged at the boom device on the said chassis, it is characterized in that, said boom device is each described boom device of claim 1-11.
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| CN201210006093.XA CN102518309B (en) | 2012-01-10 | 2012-01-10 | Arm support device and arm support type engineering machine |
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| CN201210006093.XA CN102518309B (en) | 2012-01-10 | 2012-01-10 | Arm support device and arm support type engineering machine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103416121A (en) * | 2013-07-15 | 2013-12-04 | 现代农装株洲联合收割机有限公司 | Double-layer folding method and mechanism and land leveler |
| WO2022105234A1 (en) * | 2020-11-20 | 2022-05-27 | 三一汽车制造有限公司 | Operation vehicle |
| CN115142678A (en) * | 2021-03-31 | 2022-10-04 | 三一汽车制造有限公司 | Arm support device and engineering machinery |
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| DE3445130A1 (en) * | 1984-12-11 | 1986-02-20 | Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen | Multi-armed concrete-distributing device |
| WO2006097827A2 (en) * | 2005-03-17 | 2006-09-21 | Stefano Baiardo | Extendible device to distribute concrete |
| CN201738589U (en) * | 2010-08-19 | 2011-02-09 | 三一重工股份有限公司 | Arm support system and concrete pump truck |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3445130A1 (en) * | 1984-12-11 | 1986-02-20 | Maschinenfabrik Walter Scheele GmbH & Co KG, 4750 Unna-Massen | Multi-armed concrete-distributing device |
| WO2006097827A2 (en) * | 2005-03-17 | 2006-09-21 | Stefano Baiardo | Extendible device to distribute concrete |
| CN201738589U (en) * | 2010-08-19 | 2011-02-09 | 三一重工股份有限公司 | Arm support system and concrete pump truck |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103416121A (en) * | 2013-07-15 | 2013-12-04 | 现代农装株洲联合收割机有限公司 | Double-layer folding method and mechanism and land leveler |
| CN103416121B (en) * | 2013-07-15 | 2016-08-10 | 现代农装株洲联合收割机有限公司 | A kind of double-layer folding method and double-layer folding mechanism thereof and land leveller |
| WO2022105234A1 (en) * | 2020-11-20 | 2022-05-27 | 三一汽车制造有限公司 | Operation vehicle |
| CN115142678A (en) * | 2021-03-31 | 2022-10-04 | 三一汽车制造有限公司 | Arm support device and engineering machinery |
| CN115142678B (en) * | 2021-03-31 | 2024-02-06 | 三一汽车制造有限公司 | Arm support device and engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102518309B (en) | 2014-11-19 |
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