CN102518309B - 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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- CN102518309B CN102518309B CN201210006093.XA CN201210006093A CN102518309B CN 102518309 B CN102518309 B CN 102518309B CN 201210006093 A CN201210006093 A CN 201210006093A CN 102518309 B CN102518309 B CN 102518309B
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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 arm support type engineering machinery with above-mentioned boom device.
Background technology
Concrete mixer is a kind of typical arm support type engineering machinery, concrete can be transported to construction work desired position along pipeline.In the course of the work, concrete mixer need to by be fixed on carrier pipe on boom device by concrete conveyance to assigned address, and along with the variation of transfer position, boom device need to drive carrier pipe to realize the actions such as expansion, gathering and rotation.The boom device of concrete mixer generally comprises more piece jib, and each saves between jib and can fold.
The folding mode that the jib of concrete mixer uses at present mainly contains the foldable integral modes such as R type, Z-type and RZ type, and wherein the boom device for the above jib of five joints is substantially all used RZ type folding mode.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the folding schematic diagram of a kind of typical boom device in prior art; Fig. 2 is the top view of the boom device shown in Fig. 1.
The first segment jib 1 ' of boom device is hinged with turntable, first segment jib 1 ', second section jib 2 ' and the 3rd joint jib 3 ' are folded into 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 Z-type, and the 5th joint jib 5 ' is folded to the top of the 4th joint jib 4 '.Yet, the limited space of the 4th joint jib 4 ' top, for preventing arm support folding superelevation, in prior art, six save in the concrete mixer of arms, the 6th joint jib 6 ' and the 5th joint jib 5 ' are arranged in turn along same level direction, and be folded to above the 4th joint jib 4 ', 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 prior art, compare with the boom device of five joint arm pump trucks in prior art, 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 arranging jibs more than six joints in prior art, the flexibility of boom device is poor.
Therefore, how meeting under the prerequisite of 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 those skilled in the art's technical barrier urgently to be resolved hurrily.
Summary of the invention
First object of the present invention is to provide a kind of boom device, and this boom device compact conformation, space availability ratio are high, for the layout of more piece jib provides space, thereby increases the total length of boom device, and the cloth flexibility that improves jib.Second object of the present invention is to provide a kind of arm support type engineering machinery with above-mentioned boom device.
In order to realize above-mentioned first object, the invention provides a kind of boom device, for engineering machinery, comprise successively hinged more piece jib, the butt of first segment jib and the turntable of described engineering machinery are articulated with basic pin joint, and when jib described in each is during in folded state, described boom device at least occupies three row arrangement space, described first segment jib is the straight arm frame that occupies first row arrangement space, and each row arrangement space of other of described boom device is distributed in the both sides of first segment jib.
Preferably, when jib described in each is during in folded state, described boom device occupies 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;
The first adjacent jib is set in jib described in each and the second adjacent jib is articulated and connected, the first adjacent jib occupies secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; Described the first adjacent jib comprises the first straight arm section and the second straight arm section being rotationally connected, and described the second straight arm section can rotate predetermined angle around both axis with respect to the first straight arm section.
Preferably, between described the first straight arm section and the second straight arm section, be provided with rotary flange, both are rotationally connected by rotary flange.
Preferably, described the second adjacent jib is near the afterbody of described boom device, and the second adjacent jib and the hinged end of the second straight arm section are bend.
Preferably, described bend comprises the 3rd straight arm section and the first turning section, and the 3rd straight arm section and the second straight arm section are hinged; Described in each, jib is when folded state, and the 3rd straight arm section is folded to first row arrangement space.
Preferably, described bend is arc-shaped bend structure.
Preferably, with respect to described basic pin joint, the pin joint of described the first adjacent jib and described the second adjacent jib is near driver's cabin one side of described engineering machinery.
Preferably, with respect to described basic pin joint, the first straight arm section and the second straight arm section be rotationally connected some driver's cabin one side near described engineering machinery.
Preferably, described boom device at least comprises six joint jibs, and described the 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, the second turning section and the 5th straight arm section;
First segment jib, second section jib, the 4th straight arm section occupy first row arrangement space, and the 5th straight arm section, the 4th joint jib, the 5th joint jib occupy secondary series arrangement space, and the 6th joint jib occupies the 3rd row arrangement space.
Preferably, first segment jib, second section jib, the 3rd joint arm support folding are R type, and second section jib, the 3rd joint jib, the 4th joint arm support folding are Z-type, and the 4th joint jib and the 5th joint jib are arranged along same length direction.
Preferably, also comprise the 7th joint jib, described the 7th joint jib occupies the 3rd row arrangement space, and be folded to described the 6th joint jib above or below.
Boom device provided by the present invention, for engineering machinery, comprise successively hinged more piece jib, the butt of first segment jib and the turntable of described engineering machinery are articulated with basic pin joint, when jib described in each is during in folded state, described boom device at least occupies three row arrangement space, and described first segment jib is the straight arm frame that occupies first row arrangement space, and each row arrangement space of other of described boom device is distributed in the both sides of first segment jib.
When boom device provided by the present invention folds, each column distribution of other in boom device is in the both sides in the occupied space of first segment jib, take full advantage of the arrangement space of first segment jib both sides, make full use of the space of width of the carbody direction, compared with prior art, boom device compact conformation herein, make full use of width of the carbody, for the layout of more piece jib provides space, in identical folding space, number that can foldable arm rack is more, thereby increased the total length of boom device, and avoided the Performance Match problem and the expensive problem that cause to improve jib length by increasing vehicle bridge number, and when arranging the jib of identical joint number in same folding space, respectively saving jib in this boom device can the larger space of distribution ratio, can increase transmission or driving mechanism on jib, is conducive to improve the cloth flexibility of jib.
Additionally, the arrangement of the boom device in the present invention can be alleviated the problem of prior art boom device arranged off-centre on car body, is conducive to increase the stability that vehicle is exercised.
In order to realize above-mentioned second object, the present invention also provides a kind of arm support type engineering machinery, comprise chassis and be arranged at the boom device on described chassis, described boom device is the boom device described in above-mentioned any one, because above-mentioned boom device has above-mentioned technique effect, the engineering machinery with this boom device also should have corresponding technique effect.
A preferred scheme, when jib described in each is during in folded state, described boom device occupies 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; Described in each, in jib, the first adjacent jib and the second adjacent jib are articulated and connected, and the first adjacent jib occupies secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; The first adjacent jib comprises and is rotationally connected the first straight arm section and the second straight arm section, and described the second straight arm section can rotate predetermined angle around both axis with respect to the first straight arm section.By this jib set-up mode, in boom device expansion process, with respect to the second straight arm section, the axis around both rotates the first straight arm section, thereby drive the second adjacent jib that is in the 3rd row arrangement space to rotate predetermined angle, so that the second adjacent jib is positioned at the top of the vertical position of the first adjacent jib, and then the jib that respectively saves of the second adjacent jib column is launched successively, be convenient to that overlength jib is opened in smaller space or folding.
A preferred scheme, is provided with rotary flange between described first paragraph and described second segment, and both are rotationally connected by described rotary flange; Rotary flange weight is low weight, not only can reduce jib weight, and institute take up space smaller, operation flexibility and reliability higher.
Accompanying drawing explanation
Fig. 1 is the folding schematic diagram of a kind of typical boom device in prior art;
Fig. 2 is the top view of boom device shown in Fig. 1;
Fig. 3 is the structural representation of boom device in folded state in a kind of concrete enforcement provided by the present invention;
Fig. 4 is the top view of boom device shown in Fig. 3;
Fig. 5 is the state diagram constantly of boom device expansion process shown in Fig. 3;
Fig. 6 is the top view shown in Fig. 5.
Wherein, in Fig. 1 and Fig. 2, the corresponding relation between Reference numeral and component names is:
First segment jib 1 '; Second section jib 2 '; The 3rd joint jib 3 '; The 4th joint jib 4 '; The 5th joint jib 5 '; The 6th joint jib 6 '.
Wherein, in Fig. 3 to Fig. 6, the corresponding relation between Reference numeral and component names is:
First segment jib 1; Second section jib 2; The 3rd joint jib 3; The 4th joint jib 4; The 5th joint jib 5; The 6th joint jib 6.
The specific embodiment
Object purport of the present invention is for a kind of boom device is provided, and this boom device compact conformation, space availability ratio are high, for the layout of more piece jib provides space, thereby increases the total length of boom device, and the cloth flexibility that improves jib.In addition, another object of the present invention purport is for providing a kind of arm support type engineering machinery that comprises above-mentioned boom device.
Without loss of generality, herein with boom device, on concrete mixer, be applied as example, introduce technical scheme of the present invention, it will be understood by those skilled in the art that and also do not get rid of the application of the present invention on other arm support type engineering machineries.
In order to make those skilled in the art better understand technical scheme of the present invention, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 3 to Fig. 6, Fig. 3 is the structural representation of boom device in folded state in a kind of concrete enforcement provided by the present invention; Fig. 4 is the top view of boom device shown in Fig. 3; Fig. 5 is the state diagram constantly of boom device expansion process shown in Fig. 3; Fig. 6 is the top view shown in Fig. 5.
Boom device provided by the present invention, for engineering machinery, it comprises successively hinged more piece jib, between adjacent two joint jibs, generally can be provided with telescopic oil cylinder, for carrying out the expansion of jib or drawing action in.
In this application, the butt of first segment jib 1 and the turntable of engineering machinery 8 are articulated with basic pin joint, when jib described in each is during in folded state, this boom device is at least folded into three row, described first segment jib 1 is for occupying the straight arm frame of 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 folds, each column distribution of other in boom device is in the both sides in first segment jib 1 occupied space, take full advantage of the space of first segment jib 1 both sides, make full use of the space of width of the carbody direction, compared with prior art, boom device compact conformation herein, make full use of width of the carbody, for the layout of more piece jib provides space, in identical folding space, number that can foldable arm rack is more, thereby increased the total length of boom device, and avoided the Performance Match problem and the expensive problem that cause to improve jib length by increasing vehicle bridge number, and when arranging the jib of identical joint number in same folding space, respectively saving jib in this boom device can the larger space of distribution ratio, can increase transmission or driving mechanism on jib, is conducive to improve the cloth flexibility of jib.
The arrangement of the boom device in the present invention can be alleviated the problem of prior art boom device arranged off-centre on car body, is conducive to increase the stability that vehicle is exercised.
A kind of preferred embodiment in, when jib described in each is during in folded state, described boom device occupies 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.
Described in each, in jib, definition the first adjacent jib and the second adjacent jib are articulated and connected, and the first adjacent jib occupies secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; Described the first adjacent jib comprises the first straight arm section and the second straight arm section, and the second straight arm section and the second adjacent jib are hinged, and described the second straight arm section can rotate predetermined angle around both axis with respect to the first straight arm section.By above-mentioned jib set-up mode, in boom device expansion process, with respect to the second straight arm section, the axis around both rotates the first straight arm section, thereby drives the 3rd row arrangement space at the second adjacent jib place to stride across first segment jib, and is positioned at the homonymy of the first adjacent jib; Above-mentioned rotation predetermined angular can be 90 degree, can be also the numerical value of 90 degree left and right.
This preferred embodiment in, according to real space situation, set suitable rotation predetermined angular, when boom device carries out jib expansion from folded state, can first drive the second straight arm section around both axis, to rotate predetermined angular relative to the first straight arm section, thereby drive the 3rd row arrangement space at the second adjacent jib place to stride across first segment jib, make each row arrangement space of this boom device all be positioned at the homonymy of first segment jib 1.In concrete application process, relative the first straight arm section of the second straight arm section is around both axis 90-degree rotations, drive the 3rd row arrangement space at the second adjacent jib place to turn to the top of the first adjacent jib, make this boom device in two row arrangement space, and then the jib that respectively saves of the second adjacent jib column is launched successively; When boom device completes pumpdown and folds, only aforesaid operations need be carried out to reverse operating, can complete the folding of jib; This set-up mode is convenient to that jib is opened in smaller space or is folding.
A kind of preferred embodiment in, between the first straight arm section and the second straight arm section, can be provided with rotary flange 9, both are rotationally connected by rotary flange 9, rotary flange 9 weight are low weight, not only can reduce jib weight, and institute take up space smaller, operation flexibility and reliability higher.
Certainly, the counterrotating realization of the first straight arm section and the second straight arm section also can be realized by miscellaneous part, the setting that is nested of the first straight arm section and the second straight arm section can also be set, and in both overlapping regions, the modes such as floating bearing be set.It should be noted that the first straight arm section or the 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 described boom device, and the hinged end of the second adjacent jib and the second straight arm section is bend, described in each, jib is under folded state, by the bend of the second adjacent jib end, realize the connection of secondary series arrangement space and the 3rd row arrangement space, so that the second adjacent jib strides across first segment jib and is arranged in the 3rd row arrangement space.
In the various embodiments described above, bend can comprise the 3rd straight arm section and the first turning section, and the 3rd straight arm section and the second straight arm section are hinged; Described in each, jib, when folded state, arranges the 3rd straight arm section and first segment jib 1 and all occupies first row arrangement space; By bend is rationally set, can make full use of the space of the occupied row of first segment jib 1 front-end and back-end, suitably lengthen the length of the second adjacent jib.
Certainly, also can be set to arc-shaped bend structure by bend, which processing technology is fairly simple, and the second adjacent jib is easily processed.
A kind of preferred embodiment in, with respect to described 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 described basic pin joint, being rotationally connected of the first straight arm section and the second straight arm section a little can be near driver's cabin one side of described engineering machinery.
By 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 corresponding the 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.
In order further to increase the balance of boom device car body when the folded state, because this boom device is arranged in the both sides of first segment jib 1, can be by the basic pin joint of the butt of first segment jib 1 and turntable 8 on the width of engineering machinery, the cheap amount of the centre of gyration of its relative turntable is zero, be convenient to each uniform stressed of each arm support folding aftercarriage, further improve eccentricity issues, increase the safety of Vehicle Driving Cycle.
On the basis of above-mentioned boom device, in specific 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 joint jib 5, the 6th joint jib 6; The 3rd joint jib 3, for occupying the jib that turns round of two row arrangement space, comprises the 4th straight arm section, the second turning section and the 5th straight arm section; First segment jib 1, second section jib 2, the 4th straight arm section occupy first row arrangement space, and the 5th straight arm section, the 4th joint jib 4, the 5th joint jib 5 occupy secondary series arrangement space, and the 6th joint jib 6 occupies the 3rd row arrangement space; The 5th joint jib 5 comprises that the first straight arm section 51 and second straight arm section 52, the first straight arm sections 51 that can be rotationally connected around its axis are connected by rotary part with the second straight arm section 52, and both the hinged the 4th save jib 4 and the 6th joint jib 6 respectively; The 6th joint jib 6 is bend with the end that the 5th joint jib 5 is connected, this bend can comprise the 3rd straight arm section 61 and the first turning section 63, the 3rd straight arm section 61 and the second straight arm section 52 are hinged, for convenience of description, the straight arm section that is arranged in the 3rd row arrangement space in the 6th joint jib 6 is defined as to the 6th straight arm section 62, by being set, realizes bend the connection 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.
In the above-described embodiments, when boom device is under folded state, please refer to Fig. 3 and Fig. 4; When carrying out jib expansion, can first drive relative first straight arm section 51 of the second straight arm section 52 of the 5th joint jib 5 around its axis 90-degree rotation, the 6th joint jib 6 being connected with the second straight arm section 52 turns to the vertical position top of the 5th joint jib 5 simultaneously, then respectively save jib and launch successively, please refer to Fig. 5 and Fig. 6; When boom device completes pumpdown and folds, only aforesaid operations need be carried out to reverse operating, can complete 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 residing first row arrangement space of described first segment jib 1, secondary series arrangement space is connected with the 6th joint jib 6 by the 5th joint jib 5 with the 3rd row arrangement space, the 3rd joint jib 3 can be the jib that turns round, the folding mode that has provided several boom devices below, particular content is as described below.
In the first specific embodiment, first segment jib 1, second section jib 2, the 3rd joint jib 3 can be folded into R type, and second section jib 2, the 3rd joint jib 3, the 4th joint jib 4 can be folded into Z-type.
In the second specific embodiment, first segment jib 1, second section jib 2, the 3rd joint jib 3 also can be folded into Z-type, second section jib 2, the 3rd joint jib 3, the 4th joint jib 4 can be folded into R type, the 3rd joint jib 3, the 4th joint jib 4, the 5th joint jib 5 also can be folded into 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 first segment jib 1 and second section jib 2, and the 5th joint jib 5 and the 6th joint jib 6 can be taked the description setting in the various embodiments described above.
No matter take which kind of folding mode, with prior art six joint jibs, the 6th joint jib 6 is arranged on same length direction and is compared with the 5th joint jib 5, in the present embodiment, the 6th joint jib 6 can be arranged in separately one and lists, be conducive to increase 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, second section jib 2, the 3rd joint jib 3 can be folded into R type, second section jib 2, the 3rd joint jib 3, the 4th joint jib 4 can be folded into Z-type, the 4th joint jib 4 and the 5th joint jib 5 can be arranged along same length direction, in this jib arrangement, the 5th joint jib 5 can lengthen as far as possible, make its folding rear portion can be arranged in the top of concrete mixer driver's cabin, not only can utilize driver's cabin superjacent air space to lengthen the brachium of the 5th joint jib 5 and the 6th joint jib 6, and the bracing or strutting arrangement of jib can be set on driver's cabin roof, increase the stability of jib in folded state.
In a kind of preferred embodiment, on above-mentioned each boom device architecture basics, can continue to increase jib number, boom device can comprise at least seven joint jibs, the 7th joint jib 7 is between described the 6th joint residing the 3rd row arrangement space of jib 6 and described first segment jib 1 first row arrangement space of living in, can further make full use of the space between 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 upside or the downside of the 6th joint jib 6, as long as can realize smoothly, launches.
Only with the arrangement of several representative boom devices, be described herein, more the folding mode of more piece jib will not enumerate at this.
Certainly, in described boom device, the quantity of jib is not only confined to seven joint jibs herein, it 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 in above-mentioned arbitrary embodiment, the arrangement of the 7th joint jib 7 and the 8th joint jib can need to arrange according to the use of concrete mixer, for example, when jib is during in folded state, the 8th joint jib is arranged in downside or the upside of the 7th joint jib 7 or is folded in same level, compare with the concrete mixer of seven joint boom devices, eight joint jibs have higher operation flexibility.
In various embodiments of the present invention, after so-called R type folds and is in this group foldable arm rack, the folding direction of the relatively last joint jib of a joint jib is all identical; After so-called Z-type folds and is in this group foldable arm rack, the folding direction of the relatively last joint jib of a joint jib is contrary successively.
The present invention also provides a kind of arm support type engineering machinery, comprises chassis and is arranged at the boom device on described chassis, and described 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 corresponding technique effect.
A kind of preferred embodiment in, above-mentioned arm support type engineering machinery can be concrete mixer.
In addition, the technical characterictic of other parts of this concrete mixer can, referring to prior art, not repeat them here.
Above a kind of boom device provided by the present invention and arm support type engineering machinery are described in detail.The above is only the description of the preferred embodiment of invention; should be understood that; finiteness due to literal expression; and objectively there is unlimited concrete structure; for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. a boom device, for engineering machinery, comprise successively hinged more piece jib, the butt of first segment jib (1) and the turntable of described engineering machinery are articulated with basic pin joint, it is characterized in that, described first segment jib (1) is for occupying the straight arm frame of first row arrangement space, and each row arrangement space of other of described boom device is distributed in the both sides of first segment jib (1);
When jib described in each is during in folded state, described boom device occupies 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);
The first adjacent jib is set in jib described in each and the second adjacent jib is articulated and connected, the first adjacent jib occupies secondary series arrangement space, and the second adjacent jib occupies the 3rd row arrangement space; Described the first adjacent jib comprises the first straight arm section and the second straight arm section being rotationally connected, and described the second straight arm section can rotate predetermined angle around both axis with respect to the first straight arm section.
2. boom device according to claim 1, is characterized in that, between described the first straight arm section and the second straight arm section, is provided with rotary flange, and both are rotationally connected by rotary flange.
3. boom device according to claim 1, is characterized in that, described the second adjacent jib is near the afterbody of described boom device, and the second adjacent jib and the hinged end of the second straight arm section are bend.
4. boom device according to claim 2, is characterized in that, described the second adjacent jib is near the afterbody of described boom device, and the second adjacent jib and the hinged end of the second straight arm section are bend.
5. boom device according to claim 3, is characterized in that, described bend comprises the 3rd straight arm section and the first turning section, and the 3rd straight arm section and the second straight arm section are hinged; Described in each, jib is when folded state, and the 3rd straight arm section is folded to first row arrangement space.
6. according to the boom device described in claim 3, it is characterized in that, described bend is arc-shaped bend structure.
7. according to the boom device described in claim 1 to 6 any one, it is characterized in that, with respect to described basic pin joint, the pin joint of described the first adjacent jib and described the second adjacent jib is near driver's cabin one side of described engineering machinery.
8. boom device according to claim 7, is characterized in that, with respect to described basic pin joint, the first straight arm section and the second straight arm section be rotationally connected some driver's cabin one side near described engineering machinery.
9. according to the boom device described in claim 1 to 6 any one, it is characterized in that, described boom device at least comprises six joint jibs, and described the first adjacent jib, the second adjacent jib are respectively the 5th joint jib (5), the 6th joint jib (6); The 3rd joint jib (3), for occupying the jib that turns round of two row arrangement space, comprises the 4th straight arm section, the second turning section and the 5th straight arm section;
First segment jib (1), second section jib (2), the 4th straight arm section occupy first row arrangement space, the 5th straight arm section, the 4th joint jib (4), the 5th joint jib (5) occupy 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), second section jib (2), the 3rd joint jib (3) are folded into R type, second section jib (2), the 3rd joint jib (3), the 4th joint jib (4) are folded into Z-type, and the 4th joint jib (4) is arranged along same length direction with the 5th joint jib (5).
11. boom devices according to claim 9, is characterized in that, also comprise the 7th joint jib (7), described the 7th joint jib (7) occupies the 3rd row arrangement space, and be folded to described the 6th joint jib (6) above or below.
12. 1 kinds of engineering machinery, comprise chassis and are arranged at the boom device on described chassis, it is characterized in that, described boom device is the boom device described in claim 1-11 any one.
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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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| 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 |
| CN114517578B (en) * | 2020-11-20 | 2023-04-28 | 三一汽车制造有限公司 | Work vehicle |
| CN115142678B (en) * | 2021-03-31 | 2024-02-06 | 三一汽车制造有限公司 | Arm support device and engineering machinery |
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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 |
| ITMI20050434A1 (en) * | 2005-03-17 | 2006-09-18 | Stefano Baiardo | EXTENSIBLE DEVICE FOR CONCRETE DISTRIBUTION |
| 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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| CN102518309A (en) | 2012-06-27 |
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