CN104627261A - Plug-in tracked chassis structure - Google Patents
Plug-in tracked chassis structure Download PDFInfo
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- CN104627261A CN104627261A CN201510082079.1A CN201510082079A CN104627261A CN 104627261 A CN104627261 A CN 104627261A CN 201510082079 A CN201510082079 A CN 201510082079A CN 104627261 A CN104627261 A CN 104627261A
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- riser
- overhanging beam
- plug
- section
- base plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/10—Bogies; Frames
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention relates to a plug-in tracked chassis structure comprising a frame and a track carrier. The frame comprises overhanging beams and a middle structure connected with the same. The track carrier comprises a square hole and inner vertical plates; the overhanging beams can be inserted into the square hole; the sectional areas of the roots, in connection with the middle structure, of the overhanging beams and the middle structure decrease from the middle structure to positions far away from the middle structure; The sections of the overhanging beams are designed in a variable form, namely, the sectional areas decrease from the middle structure to the positions far away from the middle structure, the middle structure is made transitional to the overhanging beams, sectional width of the roots of the overhanging beams is increased, stress area is enlarged, stress concentration of the roots is effectively decreased, stress distribution is more reasonable, the thickness of upper and lower cover plates need not be increased, the upper and lower cover plates need not be locally reinforced, strength level of material need not be increased either, manufacturing cost of the frame is decreased, and the frame is easier to manufacture.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly relate to a kind of plug-in type crawler body structure.
Background technology
Crawler crane refers to that hoisting operation part is arranged on crawler body, and walking relies on the hoisting crane of track unit.
Crawler body comprises vehicle frame and left and right track frame, and wherein track frame is also known as track unit, is generally made up of Side frame, traveling gear, drive wheel, caterpillar wheel, holder sprocket wheel, track adjusting wheel and caterpillar block.
For the crawler crane of little tonnage, demand to complete machine stability during in order to meet crane job, and the recoverable and complete machine width of track frame meets the demand of transport law during integral transportation, usually plug-in type connection mode is adopted between vehicle frame and track frame, as shown in Figure 1, during integral transportation, telescopic oil cylinder is regained, track frame a2 is retracted to narrow gauge travelling position, as the position A in Fig. 1; During hoisting operation, telescopic oil cylinder stretches out, and track frame a2 is extend out to broad gauge state, as the position B in Fig. 1.
Both met to make vehicle frame a1 and transmitted by pivoting support a3 load of getting on the bus; meet again the conversion of track frame a2 broad gauge and narrow gauge; vehicle frame a1 can adopt the typical structure of large H type usually; as shown in Figure 2; middle part is overall large box-structure, for the overhanging beam a4 part that track frame a2 is flexible, until overhanging beam root a5; all adopt the little box-structure of uniform cross section, to make track frame a2 can telescopic slide smoothly thereon.Correspondingly, track frame a2 is used for flexible square hole a6 and adopts typical rectangular configuration, as shown in Figure 3.
During broad gauge state when crawler body is in work, load of getting on the bus is passed to the middle part of vehicle frame by pivoting support, the overhanging beam then on vehicle frame, then is delivered to ground by track frame.The cross section of vehicle frame central structure and overhanging beam root junction significantly suddenlys change, and stiffness change gradient is very large, and the stress that this overhanging beam root just causing vehicle frame exists local is concentrated and high stress areas.
For the stress reducing the overhanging beam root place of vehicle frame is concentrated and high stress areas, the comparatively normal method adopted mainly contains two kinds at present:
Method one: the thickness strengthening upper and lower cover plates and riser, or the intensity rank improving upper and lower cover plates and riser.
Method two: increase brace panel in upper and lower cover plates and local, riser place.
But above-mentioned two kinds of methods are not too perfect, still there is following problem: first, method one strengthens upper and lower cover plates and riser thickness, but the increase of structural weight and cost will inevitably be brought like this, the groove of structure, weld seam also can be made to strengthen simultaneously, the more difficult control of welding deformation, therefore significantly promotes the manufacture difficulty of vehicle frame; Secondly, method two increases brace panel in upper and lower cover plates and local, riser place, and this method can make structure become more complicated, and box spells point and welding times increases, and manufacture difficulty increases.
Summary of the invention
The object of the invention is to propose a kind of plug-in type crawler body structure, the vehicle frame overhanging beam root solving crawler body structure in prior art hand and foot easily occurs that stress concentrates the problem excessive with stiffness change.
For achieving the above object, the invention provides a kind of plug-in type crawler body structure, comprise vehicle frame and track frame, the intermediate structure that wherein said vehicle frame comprises overhanging beam and is connected with described overhanging beam, described hole, the track frame side of comprising and inner side riser, described overhanging beam can insert in described side hole, and the sectional area of the root that described overhanging beam is connected with described intermediate structure is according to from described intermediate structure to the direction away from described intermediate structure from large to small.
Further, described overhanging beam comprises the first riser, outer panel, upper cover plate and lower cover, wherein said first riser is bending structure at the root position that described overhanging beam is connected with described intermediate structure, and described upper cover plate and described lower cover and described first riser adapt to gentle transition.
Further, described side hole surrounded by top board, the second riser, the 3rd riser and base plate, and described side hole adapts near the cross section of the root that the cross section of described intermediate structure side is connected with described overhanging beam and described intermediate structure.
Further, described top board, described second riser, described 3rd riser and described base plate all do not exceed the described inner side riser of described track frame.
Further, described top board, described second riser, described 3rd riser and described base plate all exceed described inner side riser, the cross section that wherein said top board, described second riser, described 3rd riser and described base plate do not exceed the part of described inner side riser is uniform cross section, and the cross section that described top board, described second riser, described 3rd riser and described base plate exceed the part of described inner side riser is the variable section that the cross section of the root be connected with described overhanging beam and described intermediate structure adapts.
Further, the part that described top board, described second riser, described 3rd riser and described base plate do not exceed described inner side riser is formed in one with the part exceeding described inner side riser.
Further, not exceed the part of described inner side riser separate with the part exceeding described inner side riser and be fixedly connected with for described top board, described second riser, described 3rd riser and described base plate.
Further, described top board, described second riser, described 3rd riser and described base plate exceed the top of the part of described inner side riser and both sides are provided with door-plate, for reinforcing the box in described side hole.
Further, described 3rd riser is provided with first with the junction of described inner side riser and is connected otic placode, the described outer panel of described overhanging beam is also provided with the second connection otic placode, and described first connection otic placode and described second is connected otic placode and is connected by connecting panel.
Based on technique scheme, the present invention is variable section by the Cross section Design of the overhanging beam root by vehicle frame, namely, sectional area is according to from intermediate structure to the direction away from intermediate structure from large to small, make intermediate structure gently can be transitioned into overhanging beam like this, add the section width of overhanging beam root, increase area of thrust surface, the stress of effective reduction root is concentrated, distribution of stress is more reasonable, do not need the thickness increasing upper cover plate and lower cover, do not need to carry out local strengthening on upper cover plate and lower cover yet, and the intensity rank of material is also without the need to improving, reduce manufacturing cost and the manufacture difficulty of vehicle frame.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of vehicle frame and track frame plug-in connection in prior art.
Fig. 2 is the structural representation of vehicle frame in prior art.
Fig. 3 is the local structure schematic diagram of track frame in prior art.
Fig. 4 is the structural representation of a vehicle frame of the present invention embodiment.
Fig. 5 is the structural representation of a track frame of the present invention embodiment.
Fig. 6 is the inner structure schematic diagram of track frame in Fig. 5.
Fig. 7 is the assembling schematic diagram of track frame in vehicle frame and Fig. 5 in Fig. 4.
In figure: a1-vehicle frame, a2-track frame, a3-pivoting support, a4-overhanging beam, a5-overhanging beam root, hole, a6-side, position when A-track frame is retracted, position when B-track frame stretches out, 1-vehicle frame, 2-track frame, 3-overhanging beam, 4-intermediate structure, 5-first riser, 6-upper cover plate, 7-lower cover, hole, 8-side, 9-top board, 10-second riser, 11-base plate, riser inside 12-, 13-door-plate, 14-outer panel, 15-first connects otic placode, and 16-second connects otic placode, 17-the 3rd riser.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, term " " center ", " transverse direction ", " longitudinal direction ", " front ", " afterwards ", " left side ", " right side ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
In order to the vehicle frame overhanging beam root solving crawler body structure in prior art easily occurs that stress concentrates the problem excessive with stiffness change, the invention provides a kind of plug-in type crawler body structure, comprise vehicle frame 1 and track frame 2, as shown in Figure 4 and Figure 6, the intermediate structure 4 that described vehicle frame 1 comprises overhanging beam 3 and is connected with described overhanging beam 3, hole, described track frame 2 side of comprising 8 and inner side riser 12, described overhanging beam 3 can insert in described side hole 8, the sectional area of the root that described overhanging beam 3 is connected with described intermediate structure 4 is according to from described intermediate structure 4 to the direction away from described intermediate structure 4 from large to small.
The cross section of overhanging beam, specifically, its implication is after overhanging beam is crosscut, the cross section of gained after namely along upper cover plate to the crosscut of lower cover direction, and its area is not definite value, is change.Overhanging beam of the prior art generally adopts the little box-structure of uniform cross section, although track frame telescopic slide smoothly thereon can be made like this, but the cross section, junction of the intermediate structure of vehicle frame and overhanging beam root also can be caused significantly to suddenly change simultaneously, make stiffness change gradient herein very large, cause stress to concentrate.After the Cross section Design of overhanging beam root is variable section by the present invention, namely, sectional area is according to from intermediate structure to the direction away from intermediate structure from large to small, make intermediate structure gently can be transitioned into overhanging beam like this, increase the section width of overhanging beam root, increase area of thrust surface, the stress of effective reduction root is concentrated, distribution of stress is more reasonable, do not need the thickness increasing upper cover plate and lower cover, do not need to carry out local strengthening on upper cover plate and lower cover yet, and the intensity rank of material is also without the need to improving, reduce manufacturing cost and the manufacture difficulty of vehicle frame.
How to change as sectional area, can multiple choices be had, as long as the stressing conditions of overhanging beam root can be improved.Preferably, the sectional area of described overhanging beam 3 diminishes to the direction away from described intermediate structure 4 gradually according to from described intermediate structure 4.Namely, from the root of overhanging beam, move to the direction away from intermediate structure, the transverse cross-sectional area of overhanging beam is more and more less, make like this to be unlikely to have too large sudden change from intermediate structure to the part of overhanging beam transition, little by little be transitioned into overhanging beam from middle frame structure, effectively can improve stressing conditions, avoid stress to concentrate.
More preferably, the sectional area of described overhanging beam 3 first remains unchanged to the direction away from described intermediate structure 4 according to from described intermediate structure 4 after diminishing gradually greatly.Namely, from the root of overhanging beam, move to the direction away from intermediate structure, the transverse cross-sectional area of overhanging beam is more and more less before this, then remain unchanged, as sectional area from where remain unchanged, can be according to actual needs, can ensure track frame can on vehicle frame telescopic slide smoothly, stress can be reduced again and concentrate as best.
In one embodiment, described overhanging beam 3 comprises the first riser 5, outer panel 14, upper cover plate 6 and lower cover 7, the root position that wherein said first riser 5 is connected with described intermediate structure 4 at described overhanging beam 3 is bending structure, and described upper cover plate 6 and described lower cover 7 adapt to gentle transition with described first riser 5.
Overhanging beam of the prior art generally adopts the little box-structure of uniform cross section, the present invention adopts variable cross-section box type structure, the simplest embodiment is the first riser bending by forming box-structure, the implication of bending is when the final section box-structure of overhanging beam is connected with the intermediate structure of vehicle frame, first riser is not vertical with the straight plate in the side of intermediate structure, but the θ that has a certain degree, as shown in Figure 4, the section width of overhanging beam root can be increased like this, improve stressing conditions.After first riser bending, outer panel can still keep original shape, does not need bending, but upper cover plate and lower cover need to increase hypotenuse thereupon, and adopts great circle arc structure in the junction with intermediate structure, to make its gentle transition.
As shown in Figure 6, described side hole 8 surrounded by top board 9, second riser 10, the 3rd riser 17 and base plate 11, and described side hole 8 adapts near the cross section of the root that the cross section of described intermediate structure 4 side is connected with described overhanging beam 3 and described intermediate structure 4.
In order to the variable section phase coadaptation with overhanging beam root, the cross section in hole, side also needs the variable section being designed to match with overhanging beam root section, namely square hole is change along the area of the transverse cross-sectional in riser direction, and such guarantee track frame is stretched smoothly by square hole and slidably reciprocates on vehicle frame.
Hole, side be designed with very large alerting ability, as long as the overhanging beam of vehicle frame can insert the square hole of track frame, and realize relative sliding between the two.Such as, described top board 9, described second riser 10, described 3rd riser 17 and described base plate 11 all do not exceed the described inner side riser 12 of described track frame 2.That is, hole, side is still designed to form as shown in Figure 3, second riser, the 3rd riser and base plate all do not exceed the scope of inner side riser, hole, side is still a cavity of track frame inside, unlike, in order to adapt to the variable section of the root of overhanging beam, hole, side is also designed to variable section, namely the sectional area in square hole is change, this form track frame can bounce back to most narrow gauge state, namely when track frame is regained, the gap between track frame and central frame beam structure is minimum, and during integral transportation, track frame is regained and complete machine width can be made to meet the demand of transport law.
Also has a kind of form in addition, namely described top board 9, described second riser 10, described 3rd riser 17 and described base plate 11 all exceed described inner side riser 12, the cross section that described top board 9, described second riser 10, described 3rd riser 17 and described base plate 11 do not exceed the part of described inner side riser 12 is uniform cross section, the cross section that described top board 9, described second riser 10, described 3rd riser 17 and described base plate 11 exceed the part of described inner side riser 12 be with described overhanging beam 3 with and the variable section that adapts of the cross section of root that is connected of described intermediate structure 4.The square hole of this form is the part in track frame inside is uniform cross section, the part of stretching out riser scope inside track frame is the variable section adapted with overhanging beam root, namely, as shown in Figure 7, second riser bending, make it to adapt with the first riser of overhanging beam, and the outer panel of the 3rd riser and overhanging beam adapts, do not need bending, like this, the part of stretching out can adapt to the changes of section of overhanging beam root better, the stress reducing overhanging beam root is concentrated, improve stressing conditions, meet the requirement of counter stress reasonable layout, when track frame is retracted to travelling position, meet while complete machine width meets the demand of transport law, also the demand that track frame is not interfered with vehicle frame overhanging beam root can be met.
In one embodiment, the part that described top board 9, described second riser 10, described 3rd riser 17 and described base plate 11 do not exceed described inner side riser 12 is formed in one with the part exceeding described inner side riser 12.In this embodiment, do not exceed part and exceed part one-body molded, so that manufacture, can also reducing between parts simultaneously and connect like this, avoiding by connecting the firm problem of parts caused.
In another embodiment, not exceed the part of described inner side riser 12 separate with the part exceeding described inner side riser 12 and be fixedly connected with for described top board 9, described second riser 10, described 3rd riser 17 and described base plate 11.In this embodiment, not exceeding part and exceeding part is separate two parts, between the two can by being welded to connect and local strengthening, the benefit of such design minimally to transform existing side hole, namely minimum to the change in side hole of the prior art, still existing side hole can be utilized, as long as increase by one section of variable section part adapted with overhanging beam again in the end in the party hole, so only need carry out slight change to existing side hole can the variable section design in hole, the side of realization, save operation, cost-saving, the interference problem between track frame and vehicle frame can also be avoided.
In addition, as shown in Figure 5, above the part exceeding described inner side riser 12 at described top board 9, described second riser 10, described 3rd riser 17 and described base plate 11 and both sides can be provided with door-plate 13, for reinforcing the box in described side hole 8.Arrange door-plate with both sides above sponson after, this door-plate can play the effect of the box-structure that hole, reinforcing side is formed well, thus the stressing conditions of hole, the side of improvement box.
In addition, first can also be provided with at described 3rd riser 17 with the junction of described inner side riser 12 and be connected otic placode 15, the described outer panel 14 of described overhanging beam 3 is also provided with the second connection otic placode 16, described first connection otic placode 15 and described second is connected otic placode 16 and is connected by connecting panel.Wherein connecting panel can also be set to guide rail, stretches out and retract to facilitate track frame.
As shown in Figure 6, be the assembling schematic diagram of vehicle frame of the present invention embodiment and a track frame embodiment, also can as the structural representation of a plug-in type crawler body structure of the present invention embodiment.As seen from the figure, when assembling, vehicle frame inserts the square hole of track frame, and track frame can slidably reciprocate smoothly on vehicle frame, when track frame is regained, first connection otic placode and second is connected otic placode and is connected by connecting panel, or when connecting panel is guide rail, regained with track frame by guide rail, when hoisting crane needs operation, track frame stretches out, and the guide rail between the first connecting panel and the second connecting panel also elongates thereupon.
By the explanation of the multiple embodiments to plug-in type crawler body structure of the present invention, can see that plug-in type crawler body constructive embodiment of the present invention can solve the excessive problem of overhanging beam Root Stress well, vehicle frame overhanging beam root of the present invention adopts variable section structure, make the transition of overhanging beam root and central frame beam structure milder, the stress of effective reduction root is concentrated, reduce upper cover plate, the stress gradient of lower cover and the first riser, reduce the stress gradient variation range of structure herein, make upper cover plate, the distribution of stress of lower cover and the first riser is more reasonable, Material Strength rank is also without the need to improving, and effectively can control manufacturing cost and the manufacture difficulty of vehicle frame.The square hole correspondence of track frame is designed to variable section structure, to meet the demand of not interfering with vehicle frame overhanging beam root when track frame is retracted to travelling position.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (9)
1. a plug-in type crawler body structure, it is characterized in that, comprise vehicle frame (1) and track frame (2), the intermediate structure (4) that wherein said vehicle frame (1) comprises overhanging beam (3) and is connected with described overhanging beam (3), described track frame (2) hole, the side of comprising (8) and inner side riser (12), described overhanging beam (3) can insert in described side hole (8), the sectional area of the root that described overhanging beam (3) is connected with described intermediate structure (4) is according to from described intermediate structure (4) to the direction away from described intermediate structure (4) from large to small.
2. plug-in type crawler body structure according to claim 1, it is characterized in that, described overhanging beam (3) comprises the first riser (5), outer panel (14), upper cover plate (6) and lower cover (7), the root position that wherein said first riser (5) is connected with described intermediate structure (4) at described overhanging beam (3) is bending structure, and described upper cover plate (6) and described lower cover (7) adapt to gentle transition with described first riser (5).
3. plug-in type crawler body structure according to claim 2, it is characterized in that, described side hole (8) surrounded by top board (9), the second riser (10), the 3rd riser (17) and base plate (11), and described side hole (8) adapts near the cross section of the root that the cross section of described intermediate structure (4) side is connected with described overhanging beam (3) and described intermediate structure (4).
4. plug-in type crawler body structure according to claim 3, it is characterized in that, described top board (9), described second riser (10), described 3rd riser (17) and described base plate (11) all do not exceed described inner side riser (12) of described track frame (2).
5. plug-in type crawler body structure according to claim 3, it is characterized in that, described top board (9), described second riser (10), described 3rd riser (17) and described base plate (11) all exceed described inner side riser (12), wherein said top board (9), described second riser (10), the cross section that described 3rd riser (17) and described base plate (11) do not exceed the part of described inner side riser (12) is uniform cross section, described top board (9), described second riser (10), the cross section that described 3rd riser (17) and described base plate (11) exceed the part of described inner side riser (12) is the variable section that the cross section of the root be connected with described overhanging beam (3) and described intermediate structure (4) adapts.
6. plug-in type crawler body structure according to claim 5, it is characterized in that, the part that described top board (9), described second riser (10), described 3rd riser (17) and described base plate (11) do not exceed described inner side riser (12) is formed in one with the part exceeding described inner side riser (12).
7. plug-in type crawler body structure according to claim 5, it is characterized in that, it is separate with the part exceeding described inner side riser (12) and be fixedly connected with that described top board (9), described second riser (10), described 3rd riser (17) and described base plate (11) do not exceed the part of described inner side riser (12).
8. plug-in type crawler body structure according to claim 5, it is characterized in that, described top board (9), described second riser (10), described 3rd riser (17) and described base plate (11) exceed the top of the part of described inner side riser (12) and both sides are provided with door-plate (13), for reinforcing the box of described side hole (8).
9. plug-in type crawler body structure according to claim 3, it is characterized in that, described 3rd riser (17) is provided with first with the junction of described inner side riser (12) and is connected otic placode (15), the described outer panel (14) of described overhanging beam (3) is also provided with the second connection otic placode (16), described first connection otic placode (15) is connected otic placode (16) with described second and is connected by connecting panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510082079.1A CN104627261B (en) | 2015-02-15 | 2015-02-15 | A kind of plug-in type crawler body structure |
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| CN201510082079.1A CN104627261B (en) | 2015-02-15 | 2015-02-15 | A kind of plug-in type crawler body structure |
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| CN104627261A true CN104627261A (en) | 2015-05-20 |
| CN104627261B CN104627261B (en) | 2017-08-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111703516A (en) * | 2020-06-16 | 2020-09-25 | 常州市华谷机械科技有限公司 | Longitudinal beam structure of crawler frame and manufacturing process thereof |
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| CN111703516B (en) * | 2020-06-16 | 2022-03-29 | 常州市华谷机械科技有限公司 | Longitudinal beam structure of crawler frame and manufacturing process thereof |
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| CN104627261B (en) | 2017-08-08 |
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