CN103526942A - Concrete pump truck and arm frame connecting mechanism thereof - Google Patents
Concrete pump truck and arm frame connecting mechanism thereof Download PDFInfo
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- CN103526942A CN103526942A CN201310441230.7A CN201310441230A CN103526942A CN 103526942 A CN103526942 A CN 103526942A CN 201310441230 A CN201310441230 A CN 201310441230A CN 103526942 A CN103526942 A CN 103526942A
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Abstract
The invention discloses a concrete pump truck and an arm frame connecting mechanism of the concrete pump truck. The arm frame connecting mechanism comprises a first extensible oil cylinder, a rotating platform and an arm frame hinged to the rotating platform, wherein the two ends of the first extensible oil cylinder are hinged to the rotating platform and the arm frame respectively. The arm frame connecting mechanism further comprises a connecting rod and an extensible mechanism, wherein a first hinge point and a second hinge point are arranged on the connecting rod, the first hinge point is hinged to the rotating platform, the second hinge point is hinged to the arm frame, one end of the extensible mechanism is hinged to the connecting rod, the other end of the extensible mechanism is hinged to the rotating platform, and the extensible mechanism is used for driving the second hinge point to rotate around the first hinge point. Due to the fact that the hinge point of the arm frame and the connecting rod can move, the rotating platform can achieve switching of two structural types, namely, the alignment non-backward bending structural type and the backward bending eccentric structural type, the large long bridge ratio of the arm frame connecting mechanism can be achieved, it can also be ensured that force is well exerted on the rotating platform, and potential safety hazards are reduced.
Description
Technical field
The present invention relates to engineering machinery field, particularly a kind of concrete mixer and jib bindiny mechanism thereof.
Background technology
Concrete mixer generally comprises pumping mechanism, slew gear, jib bindiny mechanism and the jib being integrated on chassis, is the concrete conveying equipment that integrates enforcement, pumping, cloth function.Wherein, jib bindiny mechanism comprises turntable, and one end of jib is articulated with on turntable.Renewal progress along with technology, a lot of concrete equipment company all greatly enhances bridge and compares pump truck putting forth effort exploitation, such as 3 bridge 50m, 4 bridge 60m, 5 bridge 66m etc. greatly enhances bridge becomes than pump truck the product that enterprise falls over each other exploitation, and these greatly enhance bridge and than pump truck, have that bridge number is few, lightweight, trafficability characteristic is good, low cost and other advantages.
The turntable of concrete mixer mainly contains the non-layback of the heart and the eccentric two kinds of form of structure of layback at present, feature to the non-layback structure of heart turntable is, the pin joint of jib and turntable is positioned on the centre of gyration line of turntable all the time, the turntable of this structure is stressed more even, but consider chassis cost, the layout that is unfavorable for jib, is particularly difficult to realize greatly enhancing bridge ratio; The feature of layback eccentric structure turntable is, the pin joint of jib and turntable is not to be positioned on the centre of gyration line of turntable, but the headstock direction of deflection concrete mixer, the turntable of this structure can be realized and greatly enhance bridge and compare pump truck, but the turntable of this structure is stressed very inhomogeneous, easily there is cracking and bolt fracture fault, have potential safety hazard.
Summary of the invention
In view of this, the present invention proposes a kind of jib ，Gai of bindiny mechanism jib bindiny mechanism and can realize and greatly enhance bridge ratio, can guarantee that again turntable is stressed better, reduces potential safety hazard; In addition, the present invention also provides a kind of concrete mixer that is provided with this jib bindiny mechanism.
On the one hand, the invention provides a kind of jib bindiny mechanism, comprise the first telescopic oil cylinder, turntable and jib, the two ends of described the first telescopic oil cylinder are hinged with described turntable and jib respectively; This jib bindiny mechanism also comprises connecting rod and telescoping mechanism, described connecting rod is provided with the first pin joint and the second pin joint, described the first pin joint and described turntable are hinged, described the second pin joint and described jib are hinged, one end of described telescoping mechanism and described rod hinge connection, the other end of described telescoping mechanism and described turntable are hinged; Described telescoping mechanism is used for driving described the second pin joint to rotate around described the first pin joint.
Further, be also provided with the 3rd pin joint on described connecting rod, one end of described telescoping mechanism is hinged on described the 3rd pin joint.
Further, described connecting rod is triangular structure, and described the first pin joint, the second pin joint and the 3rd pin joint lay respectively at three vertex positions of the connecting rod of described triangular structure.
Further, described telescoping mechanism is the second telescopic oil cylinder or rack-and-pinion.
Further, on the side plate of described turntable, have arc guide groove, one end of described the 3rd pin joint and telescoping mechanism is hinged with bearing pin, and described bearing pin coordinates with described arc guide groove, and described arc guide groove is offered along the movement locus of described the 3rd pin joint.
Further, the movement locus of the length of described arc guide groove and described the 3rd pin joint is equal in length.
Further, on the side plate of described turntable, have arc guide groove, described the second pin joint and jib are hinged by bearing pin, and described bearing pin coordinates with described arc guide groove, and described arc guide groove is offered along the movement locus of described the second pin joint.
Further, the peak of described turntable is lower than the extreme higher position of described the second pin joint.
Further, described connecting rod is between the biside plate of described turntable; Or the quantity of described connecting rod is two, and lay respectively at the outside of the biside plate of described turntable; Or the quantity of described connecting rod is one, and be positioned at the outside of side plate described in any one.
On the other hand, the present invention also provides a kind of concrete mixer, comprises fixedly capstan head and is arranged on the slew gear on described fixedly capstan head; This concrete mixer also comprises the jib bindiny mechanism described in above-mentioned any one, and described turntable is arranged on described slew gear.
A kind of jib provided by the invention bindiny mechanism, setting due to connecting rod and telescoping mechanism, telescoping mechanism can drive link rotate around the first pin joint, thereby can change the position of the second pin joint, change the position of the pin joint of jib and connecting rod, and then realize the switching of turntable to the non-layback of the heart and the eccentric two kinds of form of structure of layback; ，Gai jib bindiny mechanism can realize and greatly enhance bridge ratio like this, can guarantee that again turntable is stressed better, reduces potential safety hazard.Specific implementation process is, first adjust the length of the first telescopic oil cylinder and telescoping mechanism, launching jib and drive link rotates around the first pin joint, the second pin joint is positioned on the centre of gyration line of turntable, turntable is now to the non-layback structure of the heart, the turntable of this structure is stressed more even, can bear larger active force, has reduced the potential safety hazards such as the cracking that causes because of turntable unbalance stress and bolt fracture; When needs draw jib in, shrink the first telescopic oil cylinder, and drive telescoping mechanism, connecting rod is rotated around the first pin joint, the first pin joint can slowly depart from the centre of gyration line of turntable, headstock direction towards concrete mixer moves, turntable is now layback eccentric structure, because jib is now in rounding state, therefore do not need to bear too large active force, because the pin joint (i.e. the second pin joint) of jib and connecting rod has been partial to headstock direction, make the arrangement space of jib on chassis larger again, thus be conducive to realize jib greatly enhance bridge ratio.
In addition, on the side plate of turntable, have arc guide groove, and this arc guide groove is offered along the movement locus of the second pin joint or the 3rd pin joint, in the process that arc guide groove can rotate around the first pin joint at connecting rod like this, provide guide effect, make the rotation of connecting rod more steady; Moreover the movement locus of the length of arc guide groove and the second pin joint or the 3rd pin joint equal in length, makes the rotation amplitude of connecting rod be subject to position-limiting action, the variation that is conducive to telescoping mechanism length is controlled; In addition, two end positions of arc guide groove can, at connecting rod in two extreme positions, for connecting rod provides certain supporting role, can reduce the stressed of telescoping mechanism accordingly.
In addition, the height of turntable can design lowlyer than turntable of the prior art, and the peak of turntable can, lower than the extreme higher position of described the second pin joint, can change the design feature of traditional turntable like this, make turntable structure more simple, facilitate processing and manufacturing and cost-saving.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the jib of a kind of jib bindiny mechanism in the embodiment of the present invention while launching;
Fig. 2 is the structural representation of the jib of another kind of jib bindiny mechanism in the embodiment of the present invention while launching;
The structural representation when jib of Tu3Wei Tu2Zhong jib bindiny mechanism draws in;
Fig. 4 is the structural representation of the jib of another jib bindiny mechanism in the embodiment of the present invention while launching;
Fig. 5 is the structural representation of a kind of turntable in the embodiment of the present invention;
Fig. 6 is the structural representation of another turntable in the embodiment of the present invention;
Fig. 7 is the structural representation of the connecting rod of embodiment of the present invention intermediate cam shape structure.
The specific embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.1 to accompanying drawing 7 and describe the present invention in detail in conjunction with the embodiments below with reference to the accompanying drawings.
As shown in Figure 1, a kind of jib bindiny mechanism that the specific embodiment of the invention provides, comprises that the two ends of the first telescopic oil cylinder 3, turntable 2 and jib 1, the first telescopic oil cylinder 3 are hinged with turntable 2 and jib 1 respectively; This jib bindiny mechanism also comprises connecting rod 5 and telescoping mechanism 4, connecting rod 5 is provided with the first pin joint 51, the second pin joint 52 and the 3rd pin joint 53, the first pin joint 51 is hinged with turntable 2, the second pin joint 52 is hinged with jib 1, the 3rd pin joint 53 is hinged with one end of telescoping mechanism 4, and the other end of telescoping mechanism 4 and turntable 2 are hinged; Telescoping mechanism 4 is for driving the second pin joint 52 to rotate around the first pin joint 51.It should be noted that, on connecting rod 5, also can only establish the first pin joint 51 and the second pin joint 52, the first pin joint 51 is hinged with turntable 2, the second pin joint 52 is hinged with jib 1, one end of telescoping mechanism 4 is hinged on the second pin joint 52, in fact, the difference of this scheme and such scheme is, the second pin joint 52 overlaps with the position of the 3rd pin joint 53.But the stability that three pin joints are set will be higher than the scheme of only establishing two pin joints.
This jib bindiny mechanism is due to the setting of connecting rod 5 with telescoping mechanism 4, telescoping mechanism 4 can drive link 5 rotate around the first pin joint 51, thereby can change the position of the second pin joint 52, change the position of the pin joint of jib 1 and connecting rod 5, and then realize the switching of 2 pairs of non-layback of the heart of turntable and the eccentric two kinds of form of structure of layback; ，Gai jib bindiny mechanism can realize and greatly enhance bridge ratio like this, can guarantee that again turntable 2 is stressed evenly, reduces the potential safety hazard that turntable 2 crackings or bolt fracture fault are brought.The detailed process that realizes the switching of 2 pairs of non-layback of the heart of turntable and the eccentric two kinds of form of structure of layback is, first adjust the length of the first telescopic oil cylinder 3 and telescoping mechanism 4, launching jib 1 and drive link 5 rotates around the first pin joint 51, the second pin joint 52 is positioned on the centre of gyration line 6 of turntable 2 (as shown in Figure 2), turntable 2 is now to the non-layback structure of the heart, the turntable 2 of this structure is stressed more even, can bear larger active force, reduce the potential safety hazards such as the cracking that causes because of turntable 2 unbalance stress and bolt fracture, when needs draw jib 1 in, shrink the first telescopic oil cylinder 3, and drive telescoping mechanism 4, connecting rod 5 is rotated around the first pin joint 51, the second pin joint 52 can slowly depart from the centre of gyration line 6 of turntable 2, headstock direction towards concrete mixer moves (as shown in Figure 3), turntable 2 is now layback eccentric structure, because jib 1 is now in rounding state, therefore do not need to bear too large active force, again because jib 1 and the pin joint (i.e. the second pin joint 52) of connecting rod 5 have been partial to headstock direction, make the arrangement space of jib 1 on chassis larger, thereby what be conducive to realize jib 1 greatly enhances bridge ratio, extended the layout length of jib 1 on chassis.
Concrete, this telescoping mechanism 4 can have multiple way of realization, can be preferably the second telescopic oil cylinder or rack-and-pinion; Take the second telescopic oil cylinder as example, one end of the second telescopic oil cylinder is hinged on turntable 2, the other end is hinged on connecting rod 5, like this, in the process of jib 1 expansion or gathering, the second telescopic oil cylinder can partly be born the active force of the first telescopic oil cylinder 3, therefore can reduce accordingly cylinder diameter size and the stroke of the first telescopic oil cylinder 3, the space-saving layout that is simultaneously conducive to jib 1 system.In addition, between the first pin joint 51 and turntable 2, the second pin joints 52 and the two ends and connecting rod 5 and turntable 2 of jib 1, the second telescopic oil cylinder, can by bearing pin, be undertaken hinged in whole or in part.
It should be noted that, connecting rod 5 can have various shape, the linkage of three hole connecting rods or many two hole connecting rod assemblies for example, as shown in Figure 7, connecting rod 5 preferably can be for the connecting rod 5(tri-hole connecting rods of triangular structure a kind of), the connecting rod 5 of this triangular structure has three angles, and the first pin joint 51, the second pin joint 52 and the 3rd pin joint 53 are separately positioned on above-mentioned three angles.Due to the deadweight of jib 1 and the weight of material conveying, cause connecting rod 5 will bear larger active force, adopt all-in-one-piece three hole bar linkage structures, bulk strength is higher, is conducive to stability and the safety of jib 1 expansion and the process of gathering in.
In addition, connecting rod 5 can, between turntable 2 biside plates 21, also can be positioned at biside plate 21 outsides; When jib 1 is longer, connecting rod 5 need to bear larger active force, and 5, two connecting rods 5 of connecting rod that two triangular structures now can be set are hinged with two side plates 21 respectively, can better meet so long-armed the demand that 1 weight is large.
In addition, because jib 1 is transportable with the pin joint of connecting rod 5, and the weight ratio of jib 1 is larger, therefore in the expansion of jib 1 and gathering process, may there is wild effect, therefore can on the side plate 21 of turntable 2, have arc guide groove 7(as shown in Fig. 2, Fig. 3 and Fig. 5), the 3rd pin joint 53 is hinged with bearing pin with one end of telescoping mechanism 4, bearing pin coordinates with arc guide groove 7, the bearing of trend of arc guide groove 7 is identical with the movement locus of the 3rd pin joint 53, and institute's shape gathering sill 7 is offered along the movement locus of the 3rd pin joint 53; Like this, in the process that arc guide groove 7 can rotate around the first pin joint 51 at connecting rod 5, provide guide effect, make the rotation of connecting rod 5 more steady.The rotation amplitude of connecting rod 5 can be controlled by the stroke of telescoping mechanism 4, but for the anglec of rotation or the amplitude of control link 5 more easily, the length of arc guide groove 7 can be become equate with the Design of length of the movement locus of the 3rd pin joint 53, make the rotation amplitude of connecting rod 5 be subject to position-limiting action, the variation that is conducive to so the flexible limiting length of telescoping mechanism 4 is controlled; Two of arc guide groove 7 end positions can, at connecting rod 5 in two extreme positions, for connecting rod 5 provides certain supporting role, can reduce the stressed of telescoping mechanism 4 accordingly in addition.It should be noted that, can offer arc guide groove 7 along the movement locus of the second pin joint 52 yet, the same with above of action principle, does not repeat them here.
Moreover, because jib 1 and the pin joint of connecting rod 5 can move, having changed turntable 2 connected mode traditional with jib 1, jib 1 is not directly hinged with turntable 2, but is undertaken hinged by connecting rod 5; Like this, the pin joint of connecting rod 5 and turntable 2 can be positioned at the bottom of turntable 2, therefore the height of turntable 2 can design lowlyer than turntable 2 of the prior art, the peak that is turntable 2 can be lower than the extreme higher position (as shown in Figure 4 and Figure 6) of described the second pin joint 52, can change the design feature of traditional turntable 2 like this, make turntable 2 structures more simple, facilitate processing and manufacturing and cost-saving.
The specific embodiment of the invention also provides a kind of concrete mixer, this concrete mixer comprises fixing capstan head and is arranged on the slew gear on fixing capstan head, this concrete mixer also comprises that the turntable 2 of above-mentioned any one ，Gai of jib bindiny mechanism jib bindiny mechanism is arranged on slew gear.In above-mentioned jib bindiny mechanism, because jib 1 and the pin joint of connecting rod 5 can move, make turntable 2 can realize the switching to the non-layback of the heart and the eccentric two kinds of form of structure of layback, therefore, this concrete mixer not only can be realized and greatly enhance bridge ratio, make the layout of jib 1 more reasonable and practical, can guarantee that again turntable 2 is stressed better, reduce potential safety hazard.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1.Yi Zhong jib bindiny mechanism, comprise the first telescopic oil cylinder (3), turntable (2) and jib (1), the two ends of described the first telescopic oil cylinder (3) are hinged with described turntable (2) and jib (1) respectively, it is characterized in that, also comprise connecting rod (5) and telescoping mechanism (4), described connecting rod (5) is provided with the first pin joint (51) and the second pin joint (52), described the first pin joint (51) is hinged with described turntable (2), and described the second pin joint (52) is hinged with described jib (1); One end of described telescoping mechanism (4) and described connecting rod (5) are hinged, and the other end of described telescoping mechanism (4) and described turntable (2) are hinged; Described telescoping mechanism (4) is for driving described the second pin joint (52) to rotate around described the first pin joint (51).
2. jib according to claim 1 bindiny mechanism, is characterized in that, on described connecting rod (5), be also provided with the 3rd pin joint (53), one end of described telescoping mechanism (4) is hinged on described the 3rd pin joint (53).
3. jib according to claim 2 bindiny mechanism, it is characterized in that, described connecting rod (5) is triangular structure, and described the first pin joint (51), the second pin joint (52) and the 3rd pin joint (53) lay respectively at three vertex positions of the connecting rod (5) of described triangular structure.
4. jib according to claim 1 bindiny mechanism, is characterized in that, described telescoping mechanism (4) is the second telescopic oil cylinder or rack-and-pinion.
5. jib according to claim 2 bindiny mechanism, it is characterized in that, on the side plate (21) of described turntable (2), have arc guide groove (7), described the 3rd pin joint (53) is hinged with bearing pin with one end of telescoping mechanism (4), described bearing pin coordinates with described arc guide groove (7), and described arc guide groove (7) is offered along the movement locus of described the 3rd pin joint (53).
6. jib according to claim 5 bindiny mechanism, is characterized in that, the movement locus of the length of described arc guide groove (7) and described the 3rd pin joint (53) equal in length.
7. according to the jib bindiny mechanism described in claim 1-4 any one, it is characterized in that, on the side plate (21) of described turntable (2), have arc guide groove (7), described the second pin joint (52) is hinged by bearing pin with jib (1), described bearing pin coordinates with described arc guide groove (7), and described arc guide groove (7) is offered along the movement locus of described the second pin joint (52).
8. according to the jib bindiny mechanism described in claim 1-4 any one, it is characterized in that, the peak of described turntable (2) is lower than the extreme higher position of described the second pin joint (52).
9. according to the jib bindiny mechanism described in claim 1-6 any one, it is characterized in that, described connecting rod (5) is positioned between the biside plate (21) of described turntable (2); Or the quantity of described connecting rod (5) is two, and lay respectively at the outside of the biside plate (21) of described turntable (2); Or the quantity of described connecting rod (5) is one, and be positioned at the outside of side plate (21) described in any one.
10. a concrete mixer, comprises fixedly capstan head and is arranged on the slew gear on described fixedly capstan head, it is characterized in that, also comprises the jib bindiny mechanism described in claim 1-9 any one, and described turntable (2) is arranged on described slew gear.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310441230.7A CN103526942B (en) | 2013-09-25 | 2013-09-25 | Concrete mixer and jib bindiny mechanism thereof |
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| CN201310441230.7A CN103526942B (en) | 2013-09-25 | 2013-09-25 | Concrete mixer and jib bindiny mechanism thereof |
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| CN103526942A true CN103526942A (en) | 2014-01-22 |
| CN103526942B CN103526942B (en) | 2016-04-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103526942B (en) * | 2013-09-25 | 2016-04-06 | 三一汽车制造有限公司 | Concrete mixer and jib bindiny mechanism thereof |
| CN109025309A (en) * | 2018-11-12 | 2018-12-18 | 上海建工集团股份有限公司 | A kind of concrete spreader, jacking type concrete distributing device and its application method |
| CN114737763A (en) * | 2022-03-15 | 2022-07-12 | 中联重科股份有限公司 | Arm support system, control method and engineering machinery |
| WO2024036930A1 (en) * | 2022-08-16 | 2024-02-22 | 湖南五新隧道智能装备股份有限公司 | Arch frame grabbing mechanism |
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| CN103526942B (en) | 2016-04-06 |
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Denomination of invention: Concrete pump truck and arm frame connecting mechanism thereof Effective date of registration: 20200318 Granted publication date: 20160406 Pledgee: Business Department of Hunan Branch of China Construction Bank Co., Ltd. Pledgor: HUNAN SANY INTELLIGENT CONTROL EQUIPMENT Co.,Ltd. Registration number: Y2020980000821 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20211217 Granted publication date: 20160406 Pledgee: Business Department of Hunan Branch of China Construction Bank Co.,Ltd. Pledgor: Sany Automobile Manufacturing Co.,Ltd. Registration number: Y2020980000821 |