CN203667862U - Main body structure of rotary table and rotary table - Google Patents
Main body structure of rotary table and rotary table Download PDFInfo
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- CN203667862U CN203667862U CN201320627792.6U CN201320627792U CN203667862U CN 203667862 U CN203667862 U CN 203667862U CN 201320627792 U CN201320627792 U CN 201320627792U CN 203667862 U CN203667862 U CN 203667862U
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- 238000003466 welding Methods 0.000 description 14
- 238000000034 method Methods 0.000 description 12
- 239000000463 material Substances 0.000 description 9
- 238000005056 compaction Methods 0.000 description 8
- 230000004927 fusion Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000009365 direct transmission Effects 0.000 description 2
- 238000009432 framing Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
The utility model discloses a main body structure of a rotary table and the rotary table, relates to the technical field of engineering machinery and is used for solving the problems of long weld joints andstress concentration among cover plates in the prior art. The main body structure of the rotary tablecomprises a first cover plate, a second cover plate, a third cover plate, a first vertical plate, a second vertical plate, a circle plate, a bottom plate and a rotary table back part vertical plate, wherein the first vertical plate, the second vertical plate, the circle plate and the rotary table back part vertical plate are fixed on the bottom plate; the rotary table back part vertical plate, the first vertical plate and the bottom plate are arranged longitudinally; the circle plate and the rotary table back part vertical plate are welded; the first vertical plate is welded on one side of the circle plate; the second vertical plate is arranged transversely and welded with the first vertical plate; two bulge parts at one end of the third cover plate are welded with the first cover plate and the second cover plate respectively; a mounting hole is formed among the first cover plate, the second cover plate and the third cover plate; weld joints between the first and second cover plates and the bulge parts are located above the circle plate; and the third cover plate is pressed againstthe second vertical plate and welded with the second vertical plate. According to the scheme, lengths of the weld joints can be reduced.
Description
Technical field
The utility model relates to technical field of engineering machinery, is specifically related to a kind of turn table body structure and turntable.
Background technology
Crawler type dynamic compaction machinery is the one of dynamic compaction machinery, and crawler type dynamic compaction machinery refers to the truss-type cantilever crane structure hoisting crane that adopts caterpillar band traveling chassis.Turntable is the important component part of crawler type dynamic compaction machinery.Turntable refers on crawler type dynamic compaction machinery for placing the stage apparatus of power system, power hydraulic system.Turn table body structure is that jib, the isostructural main force structure of Shears are installed on turntable.
Referring to Fig. 1-Fig. 5, the turntable 20 of crawler type dynamic compaction machinery is connected with vehicle frame by pivoting support, and rotary reducer is arranged on turntable 20, and it cogs and cooperatively interacts with the gear of pivoting support; In the time of work, power system drives rotary reducer and then drives turntable 20 to turn round.
Dynamic compaction machinery be a kind ofly circulate, the machinery of intermittent moment, owing to there being a large amount of weld seams in structure, common collapse mode is that weld fatigue destroys, and is therefore necessary turntable structure to improve, and reduces or avoids weld fatigue to destroy.
Platform-type turntable is a kind of turntable comparatively common in dynamic compaction machinery, and the stressed keystone configuration of this turntable 20 is the turn table body structure 30 that the framing members such as jib, Shears are installed.
Referring to Fig. 1-Fig. 5, turn table body structure 30 is the box flatlike structures that are welded into by first longitudinal riser 10, horizontal riser 11, second longitudinal riser 12, girth sheets 13, front shroud 14, back shroud 15 and turntable rear portion riser 16, and the horizontal riser 11 of horizontally set plays the effect of stability supporting to first of longitudinal setting longitudinal riser 10 and second longitudinal riser 12.Laterally riser 11 is horizontally installed on base plate, and the length of horizontal riser 11 is greater than the width of base plate.Laterally welding between riser 11 and first longitudinal riser 10, second longitudinal riser 12, and be formed with respectively the second weld seam d between horizontal riser 11 and first longitudinal riser 10, laterally riser 11 and second longitudinal riser 12.For the ease of part single piece work, welding, the upper cover plate of turn table body structure 30 is divided into 15 two sections of front shroud 14 and back shrouds conventionally, if front shroud 14 and back shroud 15 are only butting grooves welding, weld seam does not add reinforcement protection measure, under this special operation condition of strong rammer, easily producing weld fatigue destroys, the phenomenon such as cause that weld seam is torn, therefore while design, be all that front shroud 14 and back shroud 15 are welded with horizontal riser 11 respectively, namely form T character form structure, laterally riser 11 and front shroud 14, laterally between riser 11 and back shroud 15, be formed with respectively the first weld seam c.
At least there is following problems in prior art: turn table body structure 30 adopts existing structure, and front shroud 14 and back shroud 15 and the laterally fusion length between riser 11 are long, and welding capacity is large, and weld seam is too concentrated, easily causes and affects structural behaviour by weld residual stress.
Utility model content
One of them object of the present utility model is to propose a kind of turn table body structure and turntable, has solved the problem that weld seam is long, stress is concentrated between prior art front shroud and back shroud and horizontal riser.
Many technique effects that the utility model optimal technical scheme can produce will describe in detail later.
For achieving the above object, the utility model provides following technical scheme:
The utility model provides a kind of turn table body structure, comprises the first cover plate, the second cover plate, the 3rd cover plate, the first riser, the second riser, girth sheets, base plate and turntable rear portion riser;
Described the first riser, described the second riser, described girth sheets and described turntable rear portion riser bottom separately are all fixedly connected on described base plate, described turntable rear portion riser, described the first riser length direction are separately all consistent with the length direction of described base plate, wherein one end on described girth sheets and described turntable rear portion riser length direction is welded and fixed, and the wherein one end on described the first riser length direction is welded on the side that described girth sheets deviates from described turntable rear portion riser;
The length direction of described the second riser is consistent with the Width of described base plate, and described the second riser and described the first riser are welded and fixed;
One end of described the 3rd cover plate has the lug boss of two spaces, two described lug bosses are welded and fixed with described the first cover plate and described the second cover plate respectively, between described the first cover plate, described the second cover plate and described the 3rd cover plate, are formed with the mounting hole for detachable block is installed;
Described the first cover plate and the weld seam of described the second cover plate separately and between described lug boss are all positioned at the top of described girth sheets, and described the 3rd cover plate is pressed in the top of described the second riser, between described the 3rd cover plate and described the second riser, weld.
In preferred or optional embodiment, the quantity of described turntable rear portion riser and described the first riser is all two, and each described turntable rear portion riser and each described the first riser are arranged on respectively the both sides of described base plate along the length direction of described base plate.
In preferred or optional embodiment, described the second riser is welded between two described the first risers, vertical between two between the extension direction of maximum planes on the extension direction of maximum planes and described base plate on the extension direction of maximum planes, described the first riser on described the second riser.
In preferred or optional embodiment, the quantity of described the second riser is at least two, between each described the second riser, has gap.
In preferred or optional embodiment, described the first cover plate and described the second cover plate are all bent to form by rectangular plate.
In preferred or optional embodiment, described the 3rd cover plate is rectangular plate, two edges of wherein one end of described the 3rd cover plate on described the 3rd cover plate Width are provided with described lug boss separately, and the weld seam between each described lug boss and described the first cover plate and described the second cover plate is all straight weld.
In preferred or optional embodiment, on described the first riser on the extension direction of maximum planes and described turntable rear portion riser the extension direction of maximum planes in same plane.
In preferred or optional embodiment, on described base plate, offer two auxiliary holes, the weld seam of auxiliary hole between described girth sheets and described the first cover plate described in one of them, the wherein weld seam of auxiliary hole between described girth sheets and described the second cover plate described in another.
The utility model embodiment also provides a kind of turntable, comprises the turn table body structure that the arbitrary technical scheme of the utility model provides.
Based on technique scheme, the utility model embodiment at least can produce following technique effect:
In technique scheme, upper cover plate is divided into three of the first cover plate, the second cover plate and the 3rd cover plates, and the first cover plate, the second cover plate and the 3rd cover plate are pieced together the mounting hole that is formed for installing detachable block.With respect to the material gas cutting of front shroud centre portion being fallen in prior art, cover plate is divided into above-mentioned three parts can save material.The first cover plate and the second cover plate all with the 3rd cover plate on lug boss welding, and form respectively the first weld seam.Two lug bosses overall dimensions in baseplate width direction is less than the overall width of base plate, also make the overall width of the first cover plate and the second cover plate also be less than the overall width of base plate, fusion length between the first cover plate and the second cover plate and the 3rd cover plate is also less than the overall width of base plate so, so just make the weld seam total length between the first cover plate, the second cover plate and the 3rd cover plate be less than base plate overall width, visible above-mentioned weld seam is obviously little than the fusion length between front shroud in prior art and back shroud.In technique scheme, structure to turntable cover plate is optimized, this optimization can reduce the fusion length of crucial force part, reduce welding capacity, and then the endurance failure of minimizing weld seam, make integral structure stressed more even, improve the stock utilization of sheet material simultaneously, reduce material cost, promote the in-use performance of turn table body structure.
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 is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of prior art intermediate station;
Fig. 2 is the structural representation of prior art intermediate station agent structure;
Fig. 3 is the first weld seam schematic diagram forming between front shroud in prior art, back shroud and horizontal riser;
Fig. 4 is that existing turn table body structure is removed the structural representation after front shroud and back shroud;
Fig. 5 is the second weld seam schematic diagram laterally forming between riser, first longitudinal riser and second longitudinal riser in prior art;
The structural representation of the turn table body structure that Fig. 6 provides for the utility model embodiment;
The turn table body structure that Fig. 7 provides for the utility model embodiment is removed the structural representation after the first cover plate, the second cover plate and the 3rd cover plate;
The turn table body structure that Fig. 8 provides for the utility model embodiment is removed the schematic top plan view after the first cover plate, the second cover plate and the 3rd cover plate;
Reference numeral: 1, the first cover plate; 2, the second cover plate; 3, the 3rd cover plate; 4, the first riser; 5, the second riser; 6, girth sheets; 7, base plate; 8, turntable rear portion riser; 31, lug boss; 9, auxiliary hole; A, the first weld seam; B, the second weld seam; 10, first longitudinal riser; 11, horizontal riser; 12, second longitudinal riser; 13, girth sheets; 14, front shroud; 15, back shroud; C, the first weld seam; D, the second weld seam; 16, turntable rear portion riser; 20, turntable; 30, turn table body structure.
The specific embodiment
Can understand the distinctive points between content of the present utility model and the utility model and prior art with reference to accompanying drawing Fig. 1～Fig. 8 and word content below.Below by accompanying drawing and enumerate the mode of optional embodiment more of the present utility model, the technical solution of the utility model (comprising optimal technical scheme) is described in further detail.It should be noted that: any technical characterictic in the present embodiment, any technical scheme is all one or more in technical characterictic or the optional technical scheme of plurality of optional, cannot exhaustive all alternative technical characterictics of the present utility model and alternative technical scheme in order to describe succinct need in presents, also the embodiment that is not easy to each technical characterictic all emphasizes that it is one of optional numerous embodiments, so those skilled in the art should know: any technical characterictic in the present embodiment and any technical scheme all do not limit protection domain of the present utility model, protection domain of the present utility model should comprise that those skilled in the art do not pay the thinkable any alternate embodiments of creative work.
Technical scheme the utility model being provided below in conjunction with Fig. 6～Fig. 8 is carried out more detailed elaboration, and arbitrary technological means that the utility model is provided is replaced or any two or more technological means that the utility model is provided or technical characterictic combine mutually and the technical scheme that obtains all should be within protection domain of the present utility model.
As shown in Figure 6 to 8, the utility model embodiment provides a kind of turn table body structure, comprises the first cover plate 1, the second cover plate 2, the 3rd cover plate 3, the first riser 4, the second riser 5, girth sheets 6, base plate 7 and turntable rear portion riser 8.The first riser 4, the second riser 5, girth sheets 6 and turntable rear portion riser 8 bottom separately are all fixedly connected on base plate 7, turntable rear portion riser 8, the first riser 4 length direction are separately all consistent with the length direction of base plate 7, girth sheets 6 is welded and fixed with the wherein one end on riser 8 length directions of turntable rear portion, and the wherein one end on the first riser 4 length directions is welded on the side that girth sheets 6 deviates from turntable rear portion riser 8.The length direction of the second riser 5 is consistent with the Width of base plate 7, and the second riser 5 and the first riser 4 are welded and fixed.One end of the 3rd cover plate 3 has the lug boss 31 of two spaces, two lug bosses 31 are welded and fixed with the first cover plate 1 and the second cover plate 2 respectively, between the first cover plate 1, the second cover plate 2 and the 3rd cover plate 3, are formed with the mounting hole for detachable block (being preferably rotary reducer) is installed.The first cover plate 1 and the weld seam of the second cover plate 2 separately and between lug boss 31 are all positioned at the top of girth sheets 6, and the 3rd cover plate 3 is pressed in the top of the second riser 5, welding between the 3rd cover plate 3 and the second riser 5.
Upper cover plate is divided into 3 three of the first cover plate 1, the second cover plate 2 and the 3rd cover plates, and the first cover plate 1, the second cover plate 2 and the 3rd cover plate 3 are pieced together the mounting hole that is formed for installing detachable block.With respect to the material gas cutting of front shroud 14 centre portions being fallen in prior art, cover plate is divided into above-mentioned three parts can save material.The first cover plate 1 and the second cover plate 2 all with the 3rd cover plate 3 on lug boss 31 weld, and form respectively the first weld seam a, shown in Figure 6.Two lug bosses 31 overall dimensions on base plate 7 Widths is less than the overall width of base plate 7, also make the overall width of the first cover plate 1 and the second cover plate 2 also be less than the overall width of base plate 7, fusion length between the first cover plate 1 and the second cover plate 2 and the 3rd cover plate 3 is also less than the overall width of base plate 7 so, so just make the weld seam total length between the first cover plate 1, the second cover plate 2 and the 3rd cover plate 3 be less than base plate 7 overall widths, visible above-mentioned weld seam is obviously little than the fusion length between front shroud in prior art 14 and back shroud 15.In technique scheme, the structure of turntable cover plate is optimized, this optimization can reduce the fusion length of crucial force part, and then reduces the endurance failure of weld seam, improves the stock utilization of sheet material simultaneously, promotes the in-use performance of turn table body structure.
Herein, the quantity of turntable rear portion riser 8 and the first riser 4 is all two, is arranged on respectively the both sides of base plate 7 along the length direction of base plate 7.The first riser 4 has replaced of the prior art first longitudinal riser 10 and second longitudinal riser 12, also makes the second riser 5 shorter than horizontal riser 11 of the prior art.Between the first riser 4 and the second riser 5, form the second weld seam b, shown in Figure 7.The first riser 4 is whole plates, and the second riser 5 only connects inner both sides the first riser 4, as shown in Figure 7.The first riser 4 is as a whole, is conducive to the direct transmission of load, is conducive to weld seam stressed.
Referring to Fig. 7, the second riser 5 is welded between two the first risers 4, vertical between two between the extension direction of maximum planes on the extension direction of maximum planes and base plate 7 on the extension direction of maximum planes, the first riser 4 on the second riser 5.
Referring to Fig. 7, the quantity of the second riser 5 is at least two, between each the second riser 5, has gap.Each the second riser 5 intervals arrange, and the structure of every the second riser 5 is identical.
Referring to Fig. 6, the first cover plate 1 is identical with the structure of the second cover plate 2, and the first cover plate 1 and the second cover plate 2 are all bent to form by rectangular plate.
Referring to Fig. 6, the 3rd cover plate 3 is rectangular plate, and two edges of wherein one end of the 3rd cover plate 3 on the 3rd cover plate 3 Widths are provided with lug boss 31 separately, and the weld seam between each lug boss 31 and the first cover plate 1 and the second cover plate 2 is all straight weld.Herein particularly, the 3rd cover plate 3 and two lug bosses 31 are integral type structure.
On the first riser 4 on the extension direction of maximum planes and turntable rear portion riser 8 the extension direction of maximum planes in same plane.
For ease of the weld seam between welding girth sheets 6 and the first cover plate 1, girth sheets 6 and the second cover plate 2, herein, on base plate 7, offer two auxiliary holes 9, the weld seam of one of them auxiliary hole 9 between girth sheets 6 and the first cover plate 1, the wherein weld seam of another auxiliary hole 9 between girth sheets 6 and the second cover plate 2.
The turn table body structure that technique scheme provides, has the following advantages:
1, the first cover plate 1, the second cover plate 2 are shorter than fusion length of the prior art with the weld seam that the 3rd cover plate 3 is connected, and welding capacity is little, and the weld residual stress of generation is relatively little, and the destruction that weld defect causes is relatively few;
2, below each cover plate attachment weld, there is girth sheets 6 to support, can protect weld seam;
3, the first riser 4 is a whole plate, only carries out groove welding with the second riser 5, and welding residual stress is little, and welding deformation is little; The second riser 5 is less than the material specification in original technical scheme simultaneously, and the relatively original technical scheme welding capacity of weld seam is little, reduces costs, and saves weld time, is convenient to welding;
4, front shroud is divided into the first cover plate 1 and 2 two sections of rectangular plates of the second cover plate, and stock utilization is 100%, has reduced material cost.
The utility model embodiment also provides a kind of turntable, comprises the turn table body structure that the arbitrary technical scheme of the utility model provides.
Turntable is the key construction part that contact gets on and off, stressed complexity.For this platform-type turntable, turn table body structure is box-structure, and rigidity is strong, is out of shape littlely, is the main components of power transmission.
The turntable that technique scheme provides, has above-mentioned turn table body structure, and in turn table body structure, the length of principal weld is short, is conducive to reduce stress concentrated stressed with weld seam, is conducive to the direct transmission of load.
Above-mentioned arbitrary technical scheme disclosed in the utility model unless otherwise stated, if it discloses number range, so disclosed number range is preferred number range, any it should be appreciated by those skilled in the art: preferred number range is only the obvious or representative numerical value of technique effect in many enforceable numerical value.Because numerical value is more, cannot be exhaustive, so the utility model just discloses part numerical value with casehistory the technical solution of the utility model, and the above-mentioned numerical value of enumerating should not form the restriction of the utility model being created to protection domain.
If used the word such as " first ", " second " to limit parts herein, those skilled in the art should know: the use of " first ", " second " is only used to be convenient to describe above parts are distinguished as not having outside Stated otherwise, and above-mentioned word does not have special implication.
Simultaneously, if above-mentioned the utility model discloses or has related to parts or the framing member of connection fastened to each other, so, unless otherwise stated, be fixedly connected with and can be understood as: can dismantle and be fixedly connected with (for example using bolt or screw to connect), also can be understood as: non-removable being fixedly connected with (for example rivet, weld), certainly, connection fastened to each other also can for example, be replaced (obviously cannot adopt except integrally formed technique) by integral type structure (use foundry technique is integrally formed to be created).
In addition, in the disclosed arbitrary technical scheme of above-mentioned the utility model applied for the term that represents position relationship or shape unless otherwise stated its implication comprise and its approximate, similar or approaching state or shape.Arbitrary parts that the utility model provides can be both to be assembled by multiple independent component parts, the produced separate part of the technique that also can be one of the forming.
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 the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the field are to be understood that: still can modify or part technical characterictic is equal to replacement the specific embodiment of the present utility model; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (9)
1. a turn table body structure, is characterized in that, comprises the first cover plate, the second cover plate, the 3rd cover plate, the first riser, the second riser, girth sheets, base plate and turntable rear portion riser;
Described the first riser, described the second riser, described girth sheets and described turntable rear portion riser bottom separately are all fixedly connected on described base plate, described turntable rear portion riser, described the first riser length direction are separately all consistent with the length direction of described base plate, wherein one end on described girth sheets and described turntable rear portion riser length direction is welded and fixed, and the wherein one end on described the first riser length direction is welded on the side that described girth sheets deviates from described turntable rear portion riser;
The length direction of described the second riser is consistent with the Width of described base plate, and described the second riser and described the first riser are welded and fixed;
One end of described the 3rd cover plate has the lug boss of two spaces, two described lug bosses are welded and fixed with described the first cover plate and described the second cover plate respectively, between described the first cover plate, described the second cover plate and described the 3rd cover plate, are formed with the mounting hole for detachable block is installed;
Described the first cover plate and the weld seam of described the second cover plate separately and between described lug boss are all positioned at the top of described girth sheets, and described the 3rd cover plate is pressed in the top of described the second riser, between described the 3rd cover plate and described the second riser, weld.
2. turn table body structure according to claim 1, is characterized in that,
The quantity of described turntable rear portion riser and described the first riser is all two, and each described turntable rear portion riser and each described the first riser are arranged on respectively the both sides of described base plate along the length direction of described base plate.
3. turn table body structure according to claim 2, is characterized in that,
Described the second riser is welded between two described the first risers, vertical between two between the extension direction of maximum planes on the extension direction of maximum planes and described base plate on the extension direction of maximum planes, described the first riser on described the second riser.
4. turn table body structure according to claim 3, is characterized in that,
The quantity of described the second riser is at least two, between each described the second riser, has gap.
5. turn table body structure according to claim 1, is characterized in that,
Described the first cover plate and described the second cover plate are all bent to form by rectangular plate.
6. turn table body structure according to claim 5, it is characterized in that, described the 3rd cover plate is rectangular plate, two edges of wherein one end of described the 3rd cover plate on described the 3rd cover plate Width are provided with described lug boss separately, and the weld seam between each described lug boss and described the first cover plate and described the second cover plate is all straight weld.
7. turn table body structure according to claim 1, is characterized in that, on described the first riser on the extension direction of maximum planes and described turntable rear portion riser the extension direction of maximum planes in same plane.
8. turn table body structure according to claim 1, it is characterized in that, on described base plate, offer two auxiliary holes, the weld seam of auxiliary hole between described girth sheets and described the first cover plate described in one of them, the wherein weld seam of auxiliary hole between described girth sheets and described the second cover plate described in another.
9. a turntable, is characterized in that, comprises the arbitrary described turn table body structure of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627792.6U CN203667862U (en) | 2013-10-12 | 2013-10-12 | Main body structure of rotary table and rotary table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320627792.6U CN203667862U (en) | 2013-10-12 | 2013-10-12 | Main body structure of rotary table and rotary table |
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| Publication Number | Publication Date |
|---|---|
| CN203667862U true CN203667862U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320627792.6U Expired - Lifetime CN203667862U (en) | 2013-10-12 | 2013-10-12 | Main body structure of rotary table and rotary table |
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| Country | Link |
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| CN (1) | CN203667862U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083736A (en) * | 2017-06-05 | 2017-08-22 | 徐州徐工筑路机械有限公司 | A kind of large-scale milling machine milling room frame structure |
| CN112095706A (en) * | 2020-09-24 | 2020-12-18 | 徐州徐工挖掘机械有限公司 | Crawler excavator |
| CN112897368A (en) * | 2021-01-27 | 2021-06-04 | 三一汽车起重机械有限公司 | Crane turntable and crane |
-
2013
- 2013-10-12 CN CN201320627792.6U patent/CN203667862U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107083736A (en) * | 2017-06-05 | 2017-08-22 | 徐州徐工筑路机械有限公司 | A kind of large-scale milling machine milling room frame structure |
| CN112095706A (en) * | 2020-09-24 | 2020-12-18 | 徐州徐工挖掘机械有限公司 | Crawler excavator |
| CN112897368A (en) * | 2021-01-27 | 2021-06-04 | 三一汽车起重机械有限公司 | Crane turntable and crane |
| CN112897368B (en) * | 2021-01-27 | 2023-12-19 | 三一汽车起重机械有限公司 | Crane turntable and crane |
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