CN201843960U - Construction machinery and arm support expansion mechanism thereof - Google Patents
Construction machinery and arm support expansion mechanism thereof Download PDFInfo
- Publication number
- CN201843960U CN201843960U CN2010206000587U CN201020600058U CN201843960U CN 201843960 U CN201843960 U CN 201843960U CN 2010206000587 U CN2010206000587 U CN 2010206000587U CN 201020600058 U CN201020600058 U CN 201020600058U CN 201843960 U CN201843960 U CN 201843960U
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- connecting rod
- jib
- arm joint
- extension means
- arm
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Abstract
The utility model discloses an arm support expansion mechanism including a first arm section (41), a second arm section (42), first connecting rod (43) and a second connecting rod (44), which are hinged in sequence, wherein a hinged end of the first connecting rod (43) with the second arm section (42) is arranged in the second arm section (42), and a hinged end of the second connecting rod (44) with the first arm section (41) is arranged in the first arm section (41); and the widths of the first connecting rod (43) and the second connecting rod (44) are both less than those of the first arm section (41) and the second arm section (42). By adopting the structure, the arm support expansion mechanism saves the external space of an arm support, and reduces the arrangement width of the arm support. The utility model further discloses construction machinery, which comprises the arm support adopting the arm support expansion mechanism. The construction machinery has the same technical effect.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly a kind of jib stretching device that is used for engineering machinery.The utility model also relates to a kind of engineering machinery that comprises this jib stretching device.
Background technique
Along with the fast development of economic construction, in recent years, all kinds of foundation engineerings of China are on the increase, and large-scale job site requires more and more higher for engineering machinery.
Concrete mixer is that a kind of pressure that utilizes is with the engineering machinery of commerical ready-mixed concrete along line transportation to specified position.It is that hydraulic piston type or squeeze concrete pump are installed on the automobile chassis, and comes delivering concrete with the folding hydraulic pressure jib of hydraulic pressure pipeline.Wherein, the hydraulic pressure jib is installed on the turntable of vehicle frame front portion usually, and can carry out luffing, complications in the course of the work and turn round three actions.Have advantages such as forms of motion is various, positioning control is accurately convenient, kinematic pair cellar area pressure is less, and the face contact is conveniently lubricated based on quadratic crank mechanism, the stretching, extension of the hydraulic pressure jib of existing concrete pump truck all realizes by quadratic crank mechanism.
Please refer to Fig. 1, Fig. 1 is the Placement schematic representation of a kind of jib stretching device in the prior art.
As shown in Figure 1, this jib extension means is made up of the first arm joint 31, second arm joint 32, first connecting rod 33, second connecting rod 34, amplitude oil cylinder 35, and its arrangement is that amplitude oil cylinder 35 left ends are contained on the first arm joint 31, and right-hand member is contained in the lower end of first connecting rod 33.One end of first connecting rod 33 is installed in the both sides of second arm joint 32; The symmetrical respectively both sides that are loaded on the first arm joint 31 of second connecting rod 34 1 ends, the other end symmetry is installed on the middle part of first connecting rod 33.During use, flexible drive by amplitude oil cylinder 35 saves 31, second arm joint 32, first connecting rod 33, the second connecting rod 34 hinged quadratic crank mechanisms of forming by the first arm, thereby realize continuous rotate of second arm joint 32, reach the purpose of jib motion relative to the first arm joint 31.
Yet, because this jib extension means adopts the connecting rod mode external with respect to jib, increased the layout width of jib, be unfavorable for the total arrangement of jib design.
Therefore, how changing the Placement of existing jib extension means, reduce the layout width of jib, make that the space distribution of jib is reasonable more, structure is compact more, is the problem that those skilled in the art need solve at present.
The model utility content
The purpose of this utility model provides a kind of jib extension means, and this jib extension means can reduce the layout width of jib, saves the space of jib outside, improves the general structure layout of jib.Another purpose of the present utility model provides a kind of engineering machinery that comprises above-mentioned jib extension means.
For solving the problems of the technologies described above, the utility model provides a kind of jib extension means, comprises hinged successively the first arm joint, the second arm joint, first connecting rod and second connecting rod; The rounded end with described second arm joint of described first connecting rod is arranged in described second arm joint, and the rounded end with described the first arm joint of described second connecting rod is arranged in the described the first arm joint; And the width of described first connecting rod and described second connecting rod all saves less than described the first arm and the width of described second arm joint.
Preferably, the rounded end with second connecting rod of described the first arm joint has trench structure, all offers the through hole that is used to install hinging shaft on the vertical plates on both sides of described trench structure.
Preferably, be provided with axle sleeve in the described through hole.
Preferably, be connected with gusset between the vertical plates on both sides of described trench structure.
Preferably, described first connecting rod is whole box-structure.
Preferably, the articulated section, two ends of described box-structure is fitted with axle sleeve respectively.
Preferably, an end that is connected with the first arm joint of described second connecting rod is described box-structure, and an end that is connected with first connecting rod is described trench structure.
Preferably, described jib extension means also comprises telescopic oil cylinder, and an end of described telescopic oil cylinder and described first connecting rod and described second connecting rod are articulated in a bit, and the other end and described the first arm joint are hinged.
Jib stretching device provided by the utility model, the rounded end with described second arm joint of first connecting rod is arranged in second arm joint, and the rounded end with the first arm joint of second connecting rod is arranged in the first arm joint; And the width of first connecting rod and second connecting rod all saves less than the first arm and the width of second arm joint.
Adopt the built-in Placement of this connecting rod, and the width that the integral width of connecting rod all saves less than arm, make the overall width of this jib extension means be no more than the width of jib, saved the space of jib outside, reduced the layout width of jib, improve the total arrangement of jib design, make jib structure compact more, thereby realized lightweight, the compactness of jib stretching device.
A kind of preferred embodiment in, above-mentioned jib stretching device also comprises telescopic oil cylinder, an end of telescopic oil cylinder and first connecting rod and second connecting rod are articulated in a bit, the other end and the first arm joint is hinged.Adopt such structure, two rounded ends of the prior art are merged into a rounded end, simplified the structure of jib stretching device greatly, also simplified the manufacturing procedure of connecting rod, reduced cost of production.
The utility model also provides a kind of engineering machinery, comprises jib, and described jib adopts above-mentioned each described jib extension means.Because above-mentioned jib extension means has above-mentioned technique effect, adopts the engineering machinery of this jib extension means also to have above-mentioned technique effect, does not repeat them here.
Preferably, described engineering machinery is specially concrete mixer.
Description of drawings
Fig. 1 is the Placement schematic representation of a kind of jib stretching device in the prior art;
Fig. 2 is the Placement schematic representation of jib stretching device provided by the utility model;
Fig. 3 is the structural representation of the first arm joint and the rounded end of connecting rod among Fig. 2;
Fig. 4 is the structural representation of the first connecting rod among Fig. 2;
Fig. 5 is the overall structure schematic representation of concrete mixer provided by the utility model.
Embodiment
Core of the present utility model provides a kind of jib extension means, and this jib extension means can reduce the layout width of jib, saves the space of jib outside, improves the general structure layout of jib.Another core of the present utility model provides a kind of engineering machinery that comprises above-mentioned jib extension means.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 2, Fig. 2 is the Placement schematic representation of jib stretching device provided by the utility model.
The jib extension means is the part of jib, is mainly used to realize the extending movement of jib.In one embodiment, as shown in Figure 2, jib extension means provided by the utility model comprises the first arm joint 41, second arm joint 42, first connecting rod 43 and second connecting rod 44, this hinged successively formation quadratic crank mechanism.During work, first connecting rod 43, second connecting rod 44 rotate, and rotate thereby drive the first arm joint 41, second arm joint 42, realize the stretching, extension and the contraction of jib.The rounded end with described second arm joint 42 of first connecting rod 43 is arranged in second arm joint 42, and the rounded end with the first arm joint 41 of second connecting rod 44 is arranged in the first arm joint 41; And the width of first connecting rod 43 and second connecting rod 44 all saves 42 width less than the first arm joint 41 and second arm.
Adopt the built-in Placement of this connecting rod, and the width that the integral width of connecting rod all saves less than arm, make the overall width of this jib extension means be no more than the width of jib, saved the space of jib outside, reduced the layout width of jib, improve the total arrangement of jib design, make jib structure compact more, thereby realized lightweight, the compactness of jib stretching device.
Need to prove; the foregoing description does not limit for the structural type of arm joint with the rounded end of connecting rod; every rounded end with described second arm joint 42 of first connecting rod 43 of can realizing is arranged in second arm joint 42; the rounded end with the first arm joint 41 of second connecting rod 44 is arranged at the structural type in the first arm joint 41, all should work as and belong to protection domain of the present utility model.The foregoing description does not limit for the cross section of connecting rod yet, and no matter whether connecting rod is the connecting rod of variable cross section, and every its width all should be worked as and belong to protection domain of the present utility model less than the width of the first arm joint 41 and second arm joint 42.
The concrete structure of the arm joint of above-mentioned jib extension means can also further be set.
Please refer to Fig. 3, Fig. 3 is the structural representation of the first arm joint and the rounded end of connecting rod among Fig. 2.
A kind of preferred embodiment in, as shown in Figure 3, in this jib extension means, the first arm joint 41 can have trench structure with the rounded end of second connecting rod 44, this trench structure has two cant boards that be arranged in parallel, all offers on two cant boards that be arranged in parallel to be used to install second through hole 412 that second arm saves first through hole 411 of 42 hinging shafts and is used to install second connecting rod 44 hinging shafts.
Adopt this trench structure, owing between two cant boards that be arranged in parallel of the first arm joint 41 certain distance is arranged, leave the space of link motion, make that the first arm joint 41 and second arm joint 42 can be hinged by the hinging shaft that is plugged in first through hole 411, the first arm joint 41 and second connecting rod 44 can be hinged by the hinging shaft that is plugged in second through hole 412, thereby realize the rounded end with second arm joint 42 of first connecting rod 43 is arranged in second arm joint 42.Save the space of jib outside, reduced the layout width of jib.
Need to prove; the rounded end with second connecting rod 44 of above-mentioned the first arm joint 41 is not limited to trench structure; can also be set to other structures; every space of leaving link motion, the structures that the rounded end with the first arm joint 41 that can realize second connecting rod 44 is arranged in the first arm joint 41 all should be in protection domain of the present utility model.Certainly; said structure also is not limited only to the first arm joint 41; second arm joint 42 also can adopt said structure with the rounded end of first connecting rod 43, and every structural type that the rounded end with described second arm joint 42 of first connecting rod 43 can be arranged in second arm joint 42 all should be in protection domain of the present utility model.
In further scheme, above-mentioned the first arm saves in first through hole 411 of 41 rounded ends and second through hole 412 can also be respectively equipped with first axle sleeve 413 and second axle sleeve 414.In the Spielpassung of through hole and hinging shaft, because hinging shaft needs to rotate continually for a long time, can cause the wearing and tearing of through hole and hinging shaft inevitably when work, must renewal part when the gap of hinging shaft and through hole may wear to a certain degree.The wearing and tearing that axle sleeve can reduce hinging shaft and through hole are set, save the cost of renewal part.Axle sleeve is generally the axle sleeve with the lower wear-resisting material of hardness, can further prolong the working life of axle sleeve like this.
In the scheme, can also be connected with gusset 415 between the vertical plates on both sides of above-mentioned trench structure more specifically.Because vertical plates on both sides be arranged in parallel, its inside is equipped with the long-time frequent hinging shaft that rotates, and makes vertical plates on both sides cause distortion easily.Use gusset 415 to connect these vertical plates on both sides that be arranged in parallel, can strengthen the intensity of vertical plates on both sides of the rounded end of the first arm joint 41 and second arm joint 42 greatly, avoided the distortion that causes owing to insufficient strength.
The concrete structure of the connecting rod of above-mentioned jib extension means can also further be set.
Please refer to Fig. 4, Fig. 4 is the structural representation of the first connecting rod among Fig. 2.
In another embodiment, as shown in Figure 3, the first connecting rod 43 of this jib extension means can have whole box-structure.This box-structure comprises horizontally disposed first steel plate, second steel plate and the 3rd steel plate, the 4th steel plate that vertically are provided with, first steel plate, second steel plate, the 3rd steel plate and the 4th steel plate connect and compose cylindrical structure, and vertically the 3rd steel plate that is provided with and the 4th steel plate are equipped with at the two end part that are positioned at cartridge type and are used to install the fourth hole 432 that second arm saves the third through-hole 431 of 42 hinging shafts and is used to install second connecting rod 44 hinging shafts; This box-structure also comprises the 3rd axle sleeve 433 and the 4th axle sleeve 434 that is plugged in the fourth hole 432 that is plugged in respectively in the third through-hole 431.
First connecting rod 43 becomes above-mentioned box-structure by the one-tenth disymmetry structure of prior art, makes first connecting rod 43 can be positioned over the inside of the trench structure of second arm joint 42, and is connected with second arm joint 42 by hinging shaft.Owing to adopt comparatively common box-structure, make the structure of first connecting rod 43 become simply simultaneously, also simplified the manufacturing operation of first connecting rod 43 greatly, thereby reduced the cost of production of jib extension means.The 3rd axle sleeve 433, the 4th axle sleeve 434 are set respectively in above-mentioned third through-hole 431, fourth hole 432, identical with the axle sleeve effect of the trench structure of above-mentioned arm joint, can reduce the wearing and tearing of hinging shaft and through hole, save the cost of renewal part.Axle sleeve is generally the axle sleeve with the lower wear-resisting material of hardness, can further prolong the working life of axle sleeve like this.
Need to prove, above-mentioned first connecting rod 43 is not limited only to box-structure as herein described, also can be other structures, for example first connecting rod 43 can be arranged to solid shaft, its two ends offer and are used for the fourth hole 432 that plug-in mounting second arm saves the third through-hole 431 of 42 hinging shafts and is used for plug-in mounting second connecting rod 44 hinging shafts.Every structural type of the connecting rod in the respective arms joint that its rounded end can be installed on is all in protection domain of the present utility model.
With the box-structure of the trench structure of above-mentioned the first arm joint 41 and first connecting rod 43 accordingly, second connecting rod 44 can be set to above-mentioned box-structure with the first arm joint 41 rounded ends that are connected, the rounded end that is connected with first connecting rod 43 can be set to above-mentioned trench structure.One end of box-structure can be positioned in the trench structure of the first arm joint 41, is connected well with the first arm joint 41 by hinging shaft; One end of trench structure can hold the box-structure of first connecting rod 43, is connected well with first connecting rod 43 by hinging shaft.
Certainly, above-mentioned jib extension means is not limited in first connecting rod 43 and is whole box, and second connecting rod 44 1 ends are that above-mentioned box-structure, the other end are above-mentioned trench structure, also the structure of first connecting rod 43, second connecting rod 44 can be exchanged.Every end of can realizing is installed in the rounded end of corresponding jib, and the structural type of the connecting rod that the other end and respective link are hinged all should be in protection domain of the present utility model.
In another preferred embodiment, as shown in Figure 2, above-mentioned jib extension means can also comprise telescopic oil cylinder 45, and it is 41 hinged that an end of this telescopic oil cylinder 45 and the first arm save, and the other end and first connecting rod 43 and second connecting rod 44 are articulated in a bit.
Adopt this structure, telescopic oil cylinder in the prior art 45 with first connecting rod 43, merge into a rounded end with two rounded ends of second connecting rod 44, can be connected three through holes of first connecting rod 43 three hinging shafts and be reduced to two through holes and connect two hinging shafts.When telescopic oil cylinder 45 stretches out or shrinks, drive first connecting rod 43 and second connecting rod 44 rotations simultaneously, rotate thereby drive the first arm joint 41 and second arm joint 42, and then the stretching, extension or the contraction of realization jib.
This shows that under the prerequisite of the function of use that does not influence transmitting movement, this structure can be simplified the structure of this jib extension means, reduce the manufacturing operation of connecting rod, reduce the cost of production of jib extension means.
The utility model also provides a kind of engineering machinery, and this project machinery comprises jib, and jib adopts above-mentioned jib extension means.Because above-mentioned jib extension means comprises above-mentioned technique effect, therefore comprise that the engineering machinery of this jib extension means also has identical technique effect, does not repeat them here.
Particularly, above-mentioned engineering machinery can be specially concrete mixer, and as shown in Figure 5, Fig. 5 is the overall structure schematic representation of concrete mixer provided by the utility model; This concrete mixer comprises jib, and jib adopts above-mentioned jib stretching device, in order to the extending movement between each arm joint of realizing jib.
More than a kind of engineering machinery provided by the utility model and jib extension means thereof are described in detail.Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. a jib extension means comprises hinged successively the first arm joint (41), second arm joint (42), first connecting rod (43) and second connecting rod (44); It is characterized in that the rounded end with described second arm joint (42) of described first connecting rod (43) is arranged in described second arm joint (42), the rounded end with described the first arm joint (41) of described second connecting rod (44) is arranged in the described the first arm joint (41); And the width of described first connecting rod (43) and described second connecting rod (44) all saves the width of (41) and described second arm joint (42) less than described the first arm.
2. jib extension means according to claim 1 is characterized in that, the rounded end with second connecting rod (44) of described the first arm joint (41) has trench structure, all offers the through hole that is used to install hinging shaft on the vertical plates on both sides of described trench structure.
3. jib extension means according to claim 2 is characterized in that, is provided with axle sleeve in the described through hole.
4. jib extension means according to claim 2 is characterized in that, is connected with gusset (415) between the vertical plates on both sides of described trench structure.
5. according to each described jib extension means of claim 1-4, it is characterized in that described first connecting rod (43) is whole box-structure.
6. jib extension means according to claim 5 is characterized in that, the articulated section, two ends of described box-structure is fitted with axle sleeve respectively.
7. jib extension means according to claim 6 is characterized in that, an end that is connected with the first arm joint (41) of described second connecting rod (44) is described box-structure, and an end that is connected with first connecting rod (43) is described trench structure.
8. according to each described jib extension means of claim 1-4, it is characterized in that, described jib extension means also comprises telescopic oil cylinder (45), one end of described telescopic oil cylinder (45) and described first connecting rod (43) and described second connecting rod (44) are articulated in a bit, and the other end and described the first arm joint (41) are hinged.
9. an engineering machinery comprises jib, it is characterized in that, described jib adopts as each described jib extension means of claim 1-8.
10. engineering machinery according to claim 9 is characterized in that described engineering machinery is specially concrete mixer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206000587U CN201843960U (en) | 2010-11-09 | 2010-11-09 | Construction machinery and arm support expansion mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206000587U CN201843960U (en) | 2010-11-09 | 2010-11-09 | Construction machinery and arm support expansion mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201843960U true CN201843960U (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206000587U Expired - Fee Related CN201843960U (en) | 2010-11-09 | 2010-11-09 | Construction machinery and arm support expansion mechanism thereof |
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| Country | Link |
|---|---|
| CN (1) | CN201843960U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287206A (en) * | 2011-07-21 | 2011-12-21 | 湖南五新重型装备有限公司 | Wet spraying machine for concrete |
| CN112081382A (en) * | 2020-09-23 | 2020-12-15 | 中联重科股份有限公司 | Arm section, arm support and mechanical equipment |
-
2010
- 2010-11-09 CN CN2010206000587U patent/CN201843960U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102287206A (en) * | 2011-07-21 | 2011-12-21 | 湖南五新重型装备有限公司 | Wet spraying machine for concrete |
| CN112081382A (en) * | 2020-09-23 | 2020-12-15 | 中联重科股份有限公司 | Arm section, arm support and mechanical equipment |
| CN112081382B (en) * | 2020-09-23 | 2021-09-03 | 中联重科股份有限公司 | Arm section, arm support and mechanical equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XUZHOU XUGONG SCHWING MACHINERY CO., LTD. Free format text: FORMER OWNER: BUILDING MACHINERY CO., LTD., XCMG CONSTRUCTION MACHINERY CO., LTD. Effective date: 20130604 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130604 Address after: 221004 No. 29, Peach Road, Xuzhou economic and Technological Development Zone, Jiangsu, Xuzhou Patentee after: XCMG Schwing Machinery Co., Ltd. Address before: 221004 No. 19 Peach Road, Xuzhou Economic Development Zone, Jiangsu, China Patentee before: Building Machinery Co., Ltd., XCMG Construction Machinery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20171109 |