CN203373730U - Dynamic-compactor boom and dynamic compactor - Google Patents
Dynamic-compactor boom and dynamic compactor Download PDFInfo
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- CN203373730U CN203373730U CN201320404023.XU CN201320404023U CN203373730U CN 203373730 U CN203373730 U CN 203373730U CN 201320404023 U CN201320404023 U CN 201320404023U CN 203373730 U CN203373730 U CN 203373730U
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- arm
- dynamic compaction
- jib
- compaction machinery
- boom
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Abstract
The utility model relates to a dynamic-compactor boom and a dynamic compactor. The dynamic-compactor boom comprises a bottom boom section, a plurality of middle boom sections and a top boom section, wherein the bottom boom section, the middle boom sections and the top boom section are sequentially connected in series; the bottom boom section, the middle boom sections and the top boom section are respectively a truss type boom section which is mainly composed of upper main chord members, lower main chord members, diagonal web members and transverse connecting rods, and all the boom sections are connected through hinge pins; the cross sectional areas of the dynamic-compactor boom are uniformly and linearly increased from the top boom section to the bottom boom section. The dynamic-compactor boom can solve the problems of vibration and fatigue of high-energy-level dynamic compactors in the prior art, and meanwhile machining processes and disassembly and assembly problems of the boom are considered.
Description
Technical field
The utility model relates to engineering machinery field, relates in particular to a kind of dynamic compaction machinery jib and is provided with the dynamic compaction machinery of this dynamic compaction machinery jib.
Background technology
Along with the quickening of Urbanization in China, to have carried out and reclaimed fields from the sea in a large number, fried mountain reclamation, add that China's collapsible loess district and bury district distribute extensively, so dynamic consolidation construction machinery will be to maximization, seriation development.Jib is the key operation parts of dynamic compaction machinery, by jib, slings and unloads hammer ram, realizes the compacting to ground.Existing crawler type dynamic compaction machinery jib is derived from the jib of crawler crane mostly.Along with large development of ramming energy crawler type dynamic compaction machinery, the series of problems such as the jib design brought, production, installation, transportation, use, seriously restricting the development of dynamic compaction machinery.Especially the problem of the bounce-back vibration of the jib in the dynamic compaction machinery operation process, not only can shorten application life of jib, more can increase the insecurity of strong rammer operation.Therefore be necessary very much to design a kind of specialty, safe and reliable dynamic compaction machinery jib.
The anti-back inclining mechanism used in dynamic consolidation construction machinery is also similar to the anti-back inclining mechanism of crawler crane boom.As shown in Figure 1 and Figure 2, this jib generally is comprised of coxopodite arm 1 ', some middle node arms 2 ', epimerite arm 3 ' and anti-back inclining mechanism 4 ', between each arm joint and arm save and prevent between back inclining mechanism 4 ' all adopting bearing pin to be connected.Although the jib shown in Fig. 1 and Fig. 2 has higher intensity and good stability, when falling, hammer ram can inevitably produce bounce-back, and the larger double vibrations of amplitude under the effect of anti-back inclining mechanism 4 ', stop gradually.But this vibration not only can be shortened the application life of jib, also can increase the danger of strong rammer operation.That is to say, the vibration-isolating effect of this jib is not good enough.
In addition, also have a kind of dynamic compaction machinery jib of triangle section in prior art, as shown in Figure 3, Figure 4, a whole set of jib is comprised of some main chords 5 ', some web members 6 ', epimerite arm 7 ' and anti-back inclining mechanism 8 '.Wherein: connect by bearing pin between main chord 5 ' and epimerite arm 7 ', connect by bearing pin between anti-back inclining mechanism 8 ' and main chord 5 ', all connect by flange between main chord 5 ' and between main chord 5 ' and web member 6 '.Jib shown in Fig. 3 and Fig. 4 has a main chord due to mask thereafter, this main chord has almost extended to top from the bottom of jib, therefore, this main chord also has the function of anti-hypsokinesis concurrently, together with anti-back inclining mechanism 8 ', integral arms is erected to an effect of anti-hypsokinesis preferably.But, because the agent structure of jib has adopted the flange connection, the processing and manufacturing, mounting and dismounting that therefore causes this jib be more complicated all.
The utility model content
The purpose of this utility model is dynamic compaction machinery jib and the dynamic compaction machinery that proposes a kind of safe and reliable and easy accessibility, and it can improve vibration and the fatigue problem of large energy level dynamic compaction machinery in prior art, takes into account processing technology and the dismounting problem of jib simultaneously.
For achieving the above object, the utility model provides following technical scheme:
A kind of dynamic compaction machinery jib, comprise a coxopodite arm, several middle node arms and an epimerite arm, and described coxopodite arm, middle node arm and epimerite arm sequentially are connected in series; Described coxopodite arm, middle node arm and epimerite arm are respectively the joint arm of the truss structure mainly be comprised of upper main chord, lower main chord, diagonal web member and tranverse connecting rod, and, be bearing pin between each described joint arm and connect; The cross-sectional area of described dynamic compaction machinery jib is even linear the increase from described epimerite arm to being changed to of described coxopodite arm.
Further, each described middle node arm is terrace with edge structure or pyramidal structure.
Further, described coxopodite arm, middle node arm and epimerite arm also comprise respectively the reinforcement connecting rod, and described reinforcement connecting rod is along the diagonal setting of the framework at described terrace with edge structure or pyramidal structure bottom surface and place, side.
Further, an end of the upper main chord in described coxopodite arm is connected with the upper main chord in described middle node arm, and the other end of the upper main chord in described coxopodite arm is for being connected with dynamic compaction machinery chassis bearing pin.
Further, described coxopodite arm also comprises oil cylinder, and an end of described oil cylinder is connected with the upper main chord in described middle node arm by the upper main chord in described coxopodite arm, and the other end of described oil cylinder is for being connected with dynamic compaction machinery chassis bearing pin.
Further, described coxopodite arm has two hinge ears for being connected with dynamic compaction machinery chassis bearing pin.
Further, on described epimerite arm, lifting tackle and spacing pulley are installed.
The utility model also provides a kind of dynamic compaction machinery, and it comprises the dynamic compaction machinery jib in the various embodiments described above.
Arbitrary technical scheme based in technique scheme, the utility model embodiment at least can produce following technique effect:
Due to the utility model at the coxopodite arm, middle node arm and epimerite arm sequentially are connected in series on the architecture basics of jib of formation, by the coxopodite arm, middle node arm and epimerite arm are arranged to respectively mainly by upper main chord, lower main chord, the joint arm of the truss structure that diagonal web member and tranverse connecting rod form, it is larger that truss structure has a Rigidity and strength, sling height and the advantage that the pressure of member is reduced greatly, and, each saves between arm the bearing pin connected mode that the arm retained in common jib saves form of structure and arm internode, therefore there is good manufacturability and disassembly easily.The utility model is according to the stressed situation about increasing gradually from the top to bottom that presents on the whole of jib, by the even linear increase from the epimerite arm to being changed to of coxopodite arm of the cross-sectional area of dynamic compaction machinery jib, with dynamic compaction machinery jib common in prior art two in front cross section and middle uniform section structure comparatively speaking, this structure in the utility model can reduce the stress ratio of jib in operation process, therefore not only the strength and stiffness of jib can have more reasonably been distributed, and more save material, weight is lighter, thereby the intensity in the time of can farthest guaranteeing the operation of jib strong rammer, stability and fatigue life.
In addition, one end of the upper main chord in the coxopodite arm is connected with the upper main chord in the middle node arm, the other end of the upper main chord in the coxopodite arm is for being connected with dynamic compaction machinery chassis bearing pin, unload the hammer process in the strong rammer operation, whole jib will rebound, and in this process, the upper main chord in coxopodite arm and middle node arm extends to top from the bottom of whole jib always, therefore can also play the effect of anti-hypsokinesis, but, on existing market, common jib need to rely on anti-back inclining mechanism to reduce bounce-back, therefore, the utility model compared with prior art can save the use of anti-back inclining mechanism.
Moreover, because the utility model also comprises oil cylinder, and an end of oil cylinder is connected with the upper main chord in the middle node arm by the upper main chord in the coxopodite arm, the other end of oil cylinder is for being connected with dynamic compaction machinery chassis bearing pin, and the utility model carries out luffing by oil cylinder, for the available technology adopting rope luffing, the flexibility of oil cylinder is little, and storage power is less, and the bounce produced while therefore unloading hammer is less, not only safer, and more be conducive to guarantee fatigue life of jib.
The accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model, for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
The structural representation that Fig. 1 is a kind of dynamic compaction machinery jib in prior art;
The top view that Fig. 2 is Fig. 1;
The structural representation that Fig. 3 is another kind of dynamic compaction machinery jib in prior art;
The right view that Fig. 4 is Fig. 3;
The structural representation of the embodiment that Fig. 5 is dynamic compaction machinery jib provided by the utility model;
The top view that Fig. 6 is Fig. 5;
Force analysis schematic diagram and schematic cross-section that Fig. 7 is dynamic compaction machinery jib provided by the utility model;
The structural representation that Fig. 8 is middle node arm one embodiment of the present utility model;
The left view that Fig. 9 is Fig. 8;
The structural representation that Figure 10 is another embodiment of middle node arm in the utility model;
The left view that Figure 11 is Figure 10;
The differentiation schematic diagram that Figure 12-16 are connected with anti-back inclining mechanism for dynamic compaction machinery jib in prior art;
Two kinds of working state schematic representations that Figure 17 and Figure 18 are dynamic compaction machinery jib in the utility model;
The structural representation that Figure 19 is epimerite arm in the utility model.
The specific embodiment
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
In description of the present utility model, it will be appreciated that, term " " center ", " vertically ", " laterally ", " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", orientation or the position relationship of indications such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as the restriction to the utility model protection domain.
In the strong rammer operation, pull out in the process of hammer and lifting, the suffered moment of flexure of jib increases to the coxopodite arm gradually from the epimerite arm, the utility model is just for the stressing conditions of dynamic compaction machinery jib, coxopodite arm, middle node arm and epimerite arm are arranged to respectively to the joint arm of truss structure, the cross-sectional area of dynamic compaction machinery jib are arranged to evenly linear the increase simultaneously from the epimerite arm to the variation of coxopodite arm.
As shown in Figure 5, Figure 6, the dynamic compaction machinery jib that the present embodiment provides comprises a coxopodite arm 1, several middle node arms 2 and an epimerite arm 3 with the part that in prior art, dynamic compaction machinery jib (as depicted in figs. 1 and 2) commonly used is identical, coxopodite arm 1, middle node arm 2 and epimerite arm 3 order serial connections.Coxopodite arm 1, middle node arm 2 and epimerite arm 3 are respectively the joint arm of the truss structure mainly is comprised of upper main chord, lower main chord, diagonal web member and tranverse connecting rod, and each saves what all adopt between arm is the bearing pin connection.
The part that in the dynamic compaction machinery jib that the present embodiment provides and prior art, dynamic compaction machinery jib (as depicted in figs. 1 and 2) commonly used distinguishes is: the cross-sectional area of dynamic compaction machinery jib is even linear the increase from epimerite arm 3 to being changed to of coxopodite arm 1.Below from theoretical angle, the strength and stiffness of jib provided by the utility model are analyzed.
As shown in Figure 7, according to GB/T3811-2008 " hoist design specification ", jib is carried out to the strength and stability analysis.
1, intensity is calculated
The stress at a certain section A-A place is:
Wherein:
F is loading force G and wire rope power F
sin making a concerted effort of jib length direction, due to the multiplying power relation, generally much bigger than G.
M is G and F
sthe moment of flexure sum produced at the section A-A place, i.e. M=G*x+F
s* a, wherein G*x plays major effect to the size of M.
Four main chord sectional area sums that A is the section A-A place.
W
xfor module of anti-bending section, the jib sectional dimension is larger, W
xlarger.
In all cross sections along the brachium direction,
be constant, from the top to bottom, the arm of force x of load G is increasing jib gradually, and M is increasing gradually, and for this reason, based on equicohesive design principles, the utility model makes W
xalso increase gradually, even cross section increases gradually.Therefore, the jib that cross section increases gradually from the top to bottom has more rational intensity distribution.
2, stability is calculated
Wherein: j
1, j
2with C, be all the coefficient relevant to stability.For jib, its numerical value at each section is more or less the same.
F is loading force G and wire rope power F
sin making a concerted effort of jib length direction, due to the multiplying power relation, general G compares F
smuch bigger.
M is G and F
sthe moment of flexure sum produced at the section A-A place, i.e. M=G*x+F
s* a, wherein G*x plays major effect to the size of M.
Four main chord sectional area sums that A is the section A-A place.
W
xfor module of anti-bending section, the jib sectional dimension is larger, W
xlarger.
With the strength analysis process in the same manner, at jib in each cross section from the top to bottom,
be constant, M increases gradually, for this reason, based on etc. the design principles of rigidity, the utility model makes W
xalso increase gradually, even cross section increases gradually.Therefore, the jib that cross section increases gradually from the top to bottom has more rational rigidity to distribute.
And in the prior art shown in Fig. 3 and Fig. 4, the dynamic compaction machinery jib comprises some main chords 5 ', some web members 6 ', epimerite arm 7 ' and anti-back inclining mechanism 8 ', between each main chord 5 ' and each main chord 5 ' and web member 8 ', be to be formed by connecting one by one by flange.Briefly, each component of the jib in Fig. 3 and Fig. 4 are more open, and flange connection processing and dismounting are all cumbersome, and jib of the present utility model be take the arm joint as module, by bearing pin, connects, and processing and dismounting are all more convenient.
As shown in Fig. 8-11, coxopodite arm 1 in the utility model, middle node arm 2 and epimerite arm 3 are respectively the joint arm of the truss structure mainly be comprised of upper main chord 21, lower main chord 22, diagonal web member 23 and tranverse connecting rod 24, and link into an integrated entity by the mode of welding.Each middle node arm 2 can be terrace with edge structure (as shown in Figure 8, Figure 9), can be also pyramidal structure (as shown in Figure 10, Figure 11), that is to say, the cross section of middle node arm 2 can be trapezoidal, can be also triangle.
Jib integral body in the utility model is divided into the joint arm of several truss structures, and each saves between arm and connects by bearing pin, and processing technology is simple, and mounting and dismounting are convenient.
In above-described embodiment, coxopodite arm 1, middle node arm 2 and epimerite arm 3 also comprise respectively strengthens connecting rod 25, strengthens the diagonal setting of connecting rod 25 along the framework at terrace with edge structure or pyramidal structure bottom surface and place, side.Can form triangle frame like this, whole truss structure is more firm.
As shown in Figure 12-Figure 16, if will prevent the hinge of back inclining mechanism A on jib (i.e. hinge in anti-hypsokinesis) by coxopodite arm B gradually apicad arm move.The upper hinge of anti-back inclining mechanism A is the closer to epimerite arm C, and the vibration produced when jib O unloading rebounds is just less.But, from figure, also can find out, the upper hinge of anti-back inclining mechanism A is the closer to epimerite arm C, and its length is longer, and stability is just poorer.For this reason, between anti-back inclining mechanism A and jib O, can connect several web members D, form the structure as Figure 16.The structure of Figure 16 is more perfect function, but from manufacture and dismounting, complicated and uneconomical.
For these reasons, the utility model is used for an end of the upper main chord in coxopodite arm 1 to be connected with dynamic compaction machinery chassis bearing pin, the other end of upper main chord is connected with the upper main chord 21 in middle node arm 2, thus form one complete and from the bottom of jib extend to always top main chord.Thus, on this main chord the strong rammer operation unload the process that hammer, whole jib will rebound, will have the effect of anti-hypsokinesis concurrently.With jib (as depicted in figs. 1 and 2) common on existing market, need dependence to prevent that back inclining mechanism reduces bounce-back and compares, the utility model compared with prior art can save the use of anti-back inclining mechanism.
In the various embodiments described above, coxopodite arm 1 can also comprise oil cylinder 4, and an end of oil cylinder 4 is connected with the upper main chord in middle node arm 2 by the upper main chord in coxopodite arm 1, and the other end of oil cylinder 4 is for being connected with dynamic compaction machinery chassis bearing pin.By oil cylinder 4, jib can be realized luffing.
As shown in Figure 17, Figure 18, Figure 17 and Figure 18 have meaned two kinds of work ranges of dynamic compaction machinery jib provided by the utility model.In Figure 17, the work range of jib is 6250mm, and the length of oil cylinder 4 is 1710mm.By the change in length by oil cylinder 4, to 1922mm, make the work range of jib change to 7820mm, reach the work range of Figure 18.Once the work range of jib is definite, the length of oil cylinder 4 remain unchanged.Carry out luffing with common jib by variable-amplitude steel wire rope, and the utility model carrys out luffing by oil cylinder, with respect to wire rope, the flexibility of oil cylinder is little, and storage power is little, and the bounce produced while therefore unloading is little, so not only safer, and more be conducive to guarantee fatigue life of jib.
As shown in Figure 6, in the various embodiments described above, the bottom of coxopodite arm 1 has two hinge ears 5, for being connected with dynamic compaction machinery chassis bearing pin.Like this, coxopodite arm 1 of the present utility model will have three fulcrums, support also comparatively firmly, and safety is higher.
As shown in Fig. 5, Figure 19, in the various embodiments described above, lifting tackle 6 and leading block 7 also are installed on epimerite arm 3.
The utility model also provides a kind of dynamic compaction machinery, and this dynamic compaction machinery comprises the dynamic compaction machinery jib in the various embodiments described above.The other parts of described dynamic compaction machinery can be with reference to prior art, and this paper no longer launches to describe.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although with reference to preferred embodiment, the utility model is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or the part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not breaking away from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope that the utility model asks for protection.
Claims (8)
1. a dynamic compaction machinery jib, comprise a coxopodite arm, several middle node arms and an epimerite arm, and described coxopodite arm, middle node arm and epimerite arm sequentially are connected in series; It is characterized in that:
Described coxopodite arm, middle node arm and epimerite arm are respectively the joint arm of the truss structure mainly be comprised of upper main chord, lower main chord, diagonal web member and tranverse connecting rod, and, be bearing pin between each described joint arm and connect;
The cross-sectional area of described dynamic compaction machinery jib is even linear the increase from described epimerite arm to being changed to of described coxopodite arm.
2. dynamic compaction machinery jib as claimed in claim 1 is characterized in that:
Each described middle node arm is terrace with edge structure or pyramidal structure.
3. dynamic compaction machinery jib as claimed in claim 2 is characterized in that:
Described coxopodite arm, middle node arm and epimerite arm also comprise respectively the reinforcement connecting rod, and described reinforcement connecting rod is along the diagonal setting of the framework at described terrace with edge structure or pyramidal structure bottom surface and place, side.
4. dynamic compaction machinery jib as claimed in claim 3 is characterized in that:
One end of the upper main chord in described coxopodite arm is connected with the upper main chord in described middle node arm, and the other end of the upper main chord in described coxopodite arm is for being connected with dynamic compaction machinery chassis bearing pin.
5. dynamic compaction machinery jib as claimed in claim 3 is characterized in that:
Described coxopodite arm also comprises oil cylinder, and an end of described oil cylinder is connected with the upper main chord in described middle node arm by the upper main chord in described coxopodite arm, and the other end of described oil cylinder is for being connected with dynamic compaction machinery chassis bearing pin.
6. dynamic compaction machinery jib as described as claim 4 or 5 is characterized in that:
Described coxopodite arm has two hinge ears for being connected with dynamic compaction machinery chassis bearing pin.
7. dynamic compaction machinery jib as claimed in claim 6 is characterized in that:
Lifting tackle and spacing pulley are installed on described epimerite arm.
8. a dynamic compaction machinery is characterized in that:
Comprise dynamic compaction machinery jib as described as any one in claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320404023.XU CN203373730U (en) | 2013-07-05 | 2013-07-05 | Dynamic-compactor boom and dynamic compactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320404023.XU CN203373730U (en) | 2013-07-05 | 2013-07-05 | Dynamic-compactor boom and dynamic compactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203373730U true CN203373730U (en) | 2014-01-01 |
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ID=49836275
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320404023.XU Expired - Lifetime CN203373730U (en) | 2013-07-05 | 2013-07-05 | Dynamic-compactor boom and dynamic compactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203373730U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306264A (en) * | 2013-07-05 | 2013-09-18 | 徐工集团工程机械股份有限公司 | Dynamic compactor boom and dynamic compactor |
| CN105033555A (en) * | 2015-08-31 | 2015-11-11 | 南车石家庄车辆有限公司 | Dynamic compactor moving arm combination tool |
-
2013
- 2013-07-05 CN CN201320404023.XU patent/CN203373730U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306264A (en) * | 2013-07-05 | 2013-09-18 | 徐工集团工程机械股份有限公司 | Dynamic compactor boom and dynamic compactor |
| CN103306264B (en) * | 2013-07-05 | 2016-08-17 | 徐工集团工程机械股份有限公司 | A kind of dynamic compactor arm frame and dynamic compaction machinery |
| CN105033555A (en) * | 2015-08-31 | 2015-11-11 | 南车石家庄车辆有限公司 | Dynamic compactor moving arm combination tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140101 |