CN107178340A - Beam structure and rig - Google Patents
Beam structure and rig Download PDFInfo
- Publication number
- CN107178340A CN107178340A CN201710564463.4A CN201710564463A CN107178340A CN 107178340 A CN107178340 A CN 107178340A CN 201710564463 A CN201710564463 A CN 201710564463A CN 107178340 A CN107178340 A CN 107178340A
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- bending plate
- beam structure
- plate
- foreboard
- outer arm
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- 238000005452 bending Methods 0.000 claims abstract description 142
- 238000005553 drilling Methods 0.000 abstract description 12
- 238000013461 design Methods 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention discloses a kind of beam structure and rig, it is related to engineering machinery field, to optimize beam structure, on the premise of its bearing capacity is ensured, realizes its lightweight.The beam structure is used to be installed on rig outer arm, and the beam structure is configured to be flat with the loading end that rig outer arm is connected, and the beam structure is raised away from the direction of the rig outer arm.Above-mentioned beam structure, it is used to being configured to the loading end that rig outer arm is connected flat, whole beam structure is curved, this curved structure has very high Anti-pull-press, antitorque and bending rigidity and intensity, therefore construction weight and the rigidity of structure, the design contradiction of intensity can be solved, be conducive to truck-mounted drilling rig outer arm light-weight design, and ensure the operational security and stability of vehicle.
Description
Technical field
The present invention relates to engineering machinery field, and in particular to a kind of beam structure and rig.
Background technology
According to national " 13 " development plan, need to accelerate development water energy, geothermal energy, biomass energy in the industry, open in order
Right to mine, active development natural gas, coal bed gas, shale gas equal energy source are put, therefore the demand to vehicle-mounted deep drilling rig is increasing.Car
The rig structure stress for carrying deep drilling rig is complicated, is subjected to along the tension and compression and torsion in telescopic direction, wherein outer arm sill knot
Structure is subject to the main carriers of boring tower torsion, is also subject to what boring tower was moved integrally as the important composition structure of rig structure
Main stress carrier.When actual job is punched, the Lower Crossbeam Structure is located at outer arm bottom.Vehicle-mounted deep drilling rig punching is deep in recent years
Degree is more and more deeper, and required moment of torsion is increasing, and the weight of boring tower is increasingly weighed, the Anti-pull-press of outer arm Lower Crossbeam Structure, bending resistance, anti-
Turn round performance and there is potential safety hazard, influence the stability of vehicle.
Outer arm Lower Crossbeam Structure used in existing vehicle-mounted deep drilling rig is horizontal stroke under the box-structure that flat board is welded into, outer arm
Girder construction is welded to lift its rigidity, intensity with arm body again after mainly mutually being welded by flat board, front and rear flat board and perpendicular gusset up and down.
Inventor has found, at least there are following problems in the prior art：Weight is that can vehicle-mounted deep drilling rig go up the straight of road
Index is connect, the vehicle that weight exceedes national standard can not go up road.Upper and lower, the forward and backward box plate of existing outer arm Lower Crossbeam Structure
All it is flat board, need to increase board dimension thickness could be so that Lower Crossbeam Structure meets rigidity and intensity requirement.But, increase sheet material
Dimensional thickness can cause its construction weight to lay particular stress on, and influence the light-weight design of outer arm sill.Further, since existing vehicle-mounted depth
The design of well rig outer arm Lower Crossbeam Structure is unreasonable, and outer arm sill rigidity, intensity are weaker, causes vehicle-mounted deep drilling rig boring tower real
Lower Crossbeam Structure torsional deflection is very big during the operation of border, and weld seam is easily torn.
The content of the invention
One of purpose of the present invention is to propose a kind of beam structure and rig, to optimize beam structure, is being ensured
On the premise of its bearing capacity, its lightweight is realized.
To achieve the above object, the invention provides following technical scheme：
The invention provides a kind of beam structure, for being installed on rig outer arm, the beam structure is configured to
The loading end being connected with rig outer arm is flat, and the beam structure is raised away from the direction of the rig outer arm.
In an alternate embodiment of the invention, the beam structure includes upper bending plate, lower bending plate and connecting plate, the upper bending
Plate and the lower bending plate are connected by the connecting plate, and the upper bending plate is identical with the wrap direction of the lower bending plate.
In an alternate embodiment of the invention, the connecting plate includes front and rear panels, the foreboard and the back plate all have with
The upper bending plate and the bending structure of the lower bending plate matching, the foreboard and the back plate are erected on the upper bending plate
Between the lower bending plate.
In an alternate embodiment of the invention, the foreboard and the back plate are all raised, and the foreboard and the back plate
Protrusion direction it is opposite.
In an alternate embodiment of the invention, beam structure also includes middle bending plate；
The protrusion direction of the middle bending plate and the protrusion direction of the foreboard on the contrary, and the two ends of the middle bending plate with
The foreboard connection, the middle bending plate is located between the upper bending plate and the lower bending plate；Or, the middle bending plate
Protrusion direction and the back plate protrusion direction on the contrary, and the two ends of the middle bending plate be connected with the back plate, it is described in
Bending plate is located between the upper bending plate and the lower bending plate.
In an alternate embodiment of the invention, beam structure also includes gusset, and the gusset is perpendicular to the foreboard.
In an alternate embodiment of the invention, the quantity at least two of the gusset, each gusset is arranged at intervals.
In an alternate embodiment of the invention, beam structure also includes otic placode, and the otic placode is erected on the outside of the foreboard, the ear
Plate is provided with mounting hole.
In an alternate embodiment of the invention, the otic placode includes two, and two otic placodes are vertical relative to the upper bending plate
It is symmetrical arranged to center line.
In an alternate embodiment of the invention, the upper bending plate and/or the lower bending plate are arches.
Another embodiment of the present invention provides a kind of rig, including rig outer arm and any technical scheme of the invention are provided
Beam structure, the beam structure is installed on rig outer arm, and the transversary is away from the direction of the rig outer arm
It is raised.
Based on above-mentioned technical proposal, the embodiment of the present invention can at least produce following technique effect：
Above-mentioned beam structure, it is used to be configured to flat, whole beam structure with the loading end that rig outer arm is connected
It is curved, this curved structure has very high Anti-pull-press, antitorque and bending rigidity and intensity, therefore can solve construction weight and knot
Structure rigidity, the design contradiction of intensity, are conducive to truck-mounted drilling rig outer arm light-weight design, and ensure the operational security of vehicle with it is steady
It is qualitative.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 beam structure scheme of installations provided in an embodiment of the present invention；
Fig. 2 beam structure dimensional structure diagrams provided in an embodiment of the present invention；
Fig. 3 beam structure decomposition texture schematic diagrams provided in an embodiment of the present invention；
Fig. 4 is the decomposing schematic representation of connecting plate provided in an embodiment of the present invention and middle bending plate；
Fig. 5 is foreboard main structure diagram provided in an embodiment of the present invention；
Fig. 6 is upper bending plate provided in an embodiment of the present invention and lower bending plate structure schematic diagram.
Reference：
1st, loading end；2nd, upper bending plate；3rd, lower bending plate；4th, connecting plate；41st, foreboard；42nd, back plate；5th, middle bending plate；6、
Gusset；7th, otic placode；8th, beam structure；9th, rig outer arm；10th, lower plate；61st, gusset；62nd, gusset；63rd, gusset；64th, gusset；65、
Gusset；66th, gusset；67th, gusset；68th, gusset；71st, otic placode；72nd, otic placode.
Embodiment
Illustrated in more detail with reference to Fig. 1~Fig. 6 technical schemes provided the present invention.
Referring to Fig. 1 and Fig. 2, the embodiment of the present invention provides a kind of beam structure 8, for being installed on rig outer arm 9.Outside rig
Multiple crossbeams can be set on arm 9, beam structure 8 provided in an embodiment of the present invention is more preferably as Lower Crossbeam Structure, installed in rig
The middle and lower part of outer arm 9.Beam structure 8 is configured to curved, but is flat for the loading end 1 that is connected with rig outer arm 9, and
Beam structure 8 is raised away from the direction of rig outer arm 9.
Loading end 1 can be arc, bent or other curved shape.
Above-mentioned beam structure 8, its loading end 1 for being used to be connected with rig outer arm 9 is configured to flat, whole crossbeam knot
Structure 8 is curved, and this curved structure has very high Anti-pull-press, antitorque and bending rigidity and intensity, therefore can solve construction weight
With the rigidity of structure, the design contradiction of intensity, be conducive to the light-weight design of truck-mounted drilling rig outer arm 9, and ensure the job safety of vehicle
Property and stability.
Referring to Fig. 3 and Fig. 6, beam structure 8 includes upper bending plate 2, lower bending plate 3 and connecting plate 4.Upper bending plate 2 is with
Bending plate 3 is connected by connecting plate 4, and upper bending plate 2 is identical with the wrap direction of lower bending plate 3, the side of the lower indent of bending plate 3
The downside of lower bending plate 3 in the gap of rig outer arm 9, i.e. Fig. 3.Region 101 is empty.
Referring to Fig. 3 and Fig. 6, further, beam structure 8 also includes lower plate 10, and lower plate 10 has two pieces, located at lower bending plate
3 longitudinal two ends.Lower plate 10 and lower bending plate 3 are collectively forming the supporting surface of the bottom of beam structure 8, are arranged so that lower bending plate
3 are more prone to processing and manufacturing.Certainly, it is corresponding for also directly lower bending plate 3 being shaped to upper bending plate 2, i.e.,
Same length.
Referring to Fig. 3, further, connecting plate 4 includes foreboard 41 and back plate 42.Foreboard 41 and back plate 42 all have and upper folding
Bent plate 2 and the bending structure of lower bending plate 3 matching.Foreboard 41 and back plate 42 are erected between bending plate 2 and lower bending plate 3.
Specifically, foreboard 41 and back plate 42 are in addition to opposite projection, and its edge contacted with upper bending plate 2 and lower bending plate 3 is curved
Folding, to be brought into close contact with upper bending plate 2 and lower bending plate 3.Foreboard 41 and back plate 42 are about what is erected, the upper He of bending plate 2
Lower bending plate 3 is generally horizontally disposed, the approximate horizontal area for not accounting for bending plate 2 and the bending of lower bending plate 3 herein
Domain.
Fig. 5 understands the structure for illustrating foreboard 41, and the structure of back plate 42 is also similar, and simply protrusion direction is opposite.From
Fig. 5 is it is clear that the middle part of foreboard 41 is bending, and the bending place and the shape of upper bending plate 2 and lower bending plate 3 are matched somebody with somebody
Close.
Referring to Fig. 3, in order to further improve Anti-pull-press, antitorque, bending rigidity and the intensity of beam structure 8, the He of foreboard 41
Back plate 42 is all raised, and foreboard 41 is opposite with the protrusion direction of back plate 42.Referring to Fig. 4, foreboard 41 and back plate 42 are all
It is central raised, and protrusion direction is opposite.
Referring to Fig. 3, upper bending plate 2 and the entirety of lower bending plate 3 all arch upward generally upwards, and foreboard 41 has and upper bending plate 2
The bending structure matched with lower bending plate 3.Back plate 42 also has the bending structure matched with upper bending plate 2 and lower bending plate 3.Separately
Outside, the protrusion direction of foreboard 41 and back plate 42 is on the contrary, performance is the middle part of foreboard 41 and back plate 42 in figure 3 all to crossbeam knot
The outer projection of structure 8.The beam structure Final 8 degree and rigidity so formed is higher.
Referring to Fig. 3 and Fig. 4, beam structure 8 also includes middle bending plate 5, and the protrusion direction of middle bending plate 5 is convex with foreboard 41
Rise in the opposite direction, and the two ends of the middle bending plate 5 are connected with foreboard 41, middle bending plate 5 is located at upper bending plate 2 and lower bending plate
Between 3.
Referring to Fig. 3 and Fig. 4, the protrusion direction of middle bending plate 5 is opposite with the protrusion direction of foreboard 41, projection with back plate 42
Direction is identical.Middle bending plate 5 compares short, and its length probably corresponds to the length of central raised section of foreboard 41.The two ends of middle bending plate 5
It is connected with the bossing of foreboard 41.
Another set-up mode of middle bending plate 5 is as follows：The protrusion direction of middle bending plate 5 and the protrusion direction phase of back plate 42
Instead, it is identical with the protrusion direction of foreboard 41, and the two ends of the middle bending plate 5 are connected with back plate 42, middle bending plate 5 is located at upper folding
Between bent plate 2 and lower bending plate 3.Middle bending plate 5 compares short, and its length probably corresponds to the length of central raised section of back plate 42.In
The two ends of bending plate 5 are connected with the bossing of back plate 42.
In the present embodiment by taking latter approach as an example.The beam structure 8 of which formation, with very high Anti-pull-press, resists
Turn round and bending rigidity and intensity.
Referring to Fig. 3, in the present embodiment, beam structure 8 also includes gusset 6, and gusset 6 is approximately perpendicular to foreboard 41.Gusset 6 can
With the Anti-pull-press for further increasing beam structure 8, antitorque and bending rigidity and intensity.
Referring to Fig. 3, the quantity of gusset 6 can be with least two, and each gusset 6 is arranged at intervals.In the present embodiment, there is provided many
Root gusset 6, each gusset 6 is generally parallel, and four ribs plate 6, respectively muscle are provided with the high spot of foreboard 41 and back plate 42
Plate 63,64,65,66, this four ribs plate 6 can increase the Anti-pull-press of high spot, antitorque and bending strength and rigidity well.
Referring to Fig. 3, beam structure 8 also includes otic placode 7, and otic placode 7 is erected on the outside of foreboard 41, and otic placode 7 is approximately perpendicular to
Bending plate 2.Otic placode 7 is provided with mounting hole, to realize the installation of miscellaneous part.
Referring to Fig. 2, in the present embodiment, otic placode 7 includes two, respectively otic placode 71 and otic placode 72, otic placode 71 and otic placode 72
Longitudinal centre line L relative to upper bending plate 2 is symmetrical arranged.
Referring to Fig. 1 to Fig. 3, a specific embodiment is described below.Rig outer arm 9 can set two beam structures 8, according to setting
The difference of position, the carrying situation of each beam structure 8 is also different.The beam structure 8 of the present embodiment is suitable for being arranged on lower section,
Alternatively referred to as Lower Crossbeam Structure.
By taking direction shown in Fig. 2 as an example, the Lower Crossbeam Structure be bilateral symmetry, mainly by upper bending plate 2, back plate 42,
Lower plate 6, foreboard 41, middle bending plate 5, lower bending plate 3, lower plate 19, gusset 6 and otic placode 7 are welded.Wherein, gusset 6 includes muscle
Plate 61, gusset 62, gusset 63, gusset 64, gusset 65, gusset 66, gusset 67 and gusset 68.Otic placode 7 includes otic placode 71 and otic placode
72。
By back plate 42 inside beam structure 8, foreboard 41, gusset 62, gusset 67 is mutually welded, and makes to form hexagon knot in the middle of it
Middle hexagonal structure is divided into small quadrangle and triangular structure by structure, middle bending plate 5, enables outer arm Lower Crossbeam Structure more
Tension and compression and bending are born well.
In the present embodiment, upper bending plate 2, lower bending plate 3 are all arch bending plate, and the structure can improve outer arm sill knot
The anti-twisting property of structure.
It should be noted that upper bending plate 2, lower bending plate 3 is not limited to arch bending plate, each bending plate bending times are not
Limit, bending angle is not limited, and the middle number of bending plate 5 can increase according to arrangement space, reduce.
Referring to Fig. 3, back plate 42, foreboard 41 and middle bending plate 5 are all arches, and the structure can improve outer arm Lower Crossbeam Structure
Anti-pull-press and bending ability.It should be noted that the arch angle of foreboard 41, middle bending plate 5 and back plate 42 is not limited, arch
Number is not limited, also can be without arch.
Said structure can solve the current vehicle-mounted Lower Crossbeam Structure rigidity of deep drilling rig outer arm 9, strength problem, and under realizing
The lightweight of beam structure.The center section of beam structure 8 is by upper bending plate 2, back plate 42, foreboard 41, middle bending plate 5 and lower bending
The welding of plate 3 forms polygon, improves rigidity, the intensity of outer arm Lower Crossbeam Structure.Centre splicing shape is not limited to hexagon, can be
Other polygons.
Above-mentioned technical proposal, using topology optimization design, is combined using the multiple structural forms of flat board, bending plate, altogether
With the vehicle-mounted sill novel layouts structure of deep drilling rig outer arm 9 is formed, its structure is not only lightweight, and with very high tension
Pressure, antitorque and bending rigidity and intensity, can effectively solve construction weight and the rigidity of structure, the design contradiction of intensity, be conducive to car
The light-weight design of deep drilling rig outer arm 9 is carried, and ensures the operational security and stability of vehicle.
Another embodiment of the present invention provides a kind of rig, including the beam structure 8 that any technical scheme of the invention is provided,
Beam structure 8 is installed on rig outer arm 9, and transversary is raised away from the direction of rig outer arm 9.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown is only for ease of the description present invention and simplifies description, rather than indicates or infer the device of meaning
Or element must have specific orientation, be specific azimuth configuration and operation, thus it is not intended that in present invention protection
The limitation of appearance.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic,
But these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (11)
1. a kind of beam structure, for being installed on rig outer arm (9), it is characterised in that the beam structure is configured to
The loading end (1) being connected with rig outer arm (9) is flat, and the beam structure is away from the side of the rig outer arm (9)
To projection.
2. beam structure according to claim 1, it is characterised in that the beam structure includes upper bending plate (2), lower folding
Bent plate (3) and connecting plate (4), the upper bending plate (2) and the lower bending plate (3) are connected by the connecting plate (4), described
Upper bending plate (2) is identical with the wrap direction of the lower bending plate (3).
3. beam structure according to claim 2, it is characterised in that the connecting plate (4) includes foreboard (41) and back plate
(42), the foreboard (41) and the back plate (42) all have what is matched with the upper bending plate (2) and the lower bending plate (3)
Bending structure, the foreboard (41) and the back plate (42) be erected on the upper bending plate (2) and the lower bending plate (3) it
Between.
4. beam structure according to claim 3, it is characterised in that the foreboard (41) and the back plate (42) are all convex
Rise, and the protrusion direction of the foreboard (41) and the back plate (42) is opposite.
5. beam structure according to claim 3, it is characterised in that also including middle bending plate (5)；
The protrusion direction of the middle bending plate (5) and the protrusion direction of the foreboard (41) are on the contrary, and the middle bending plate (5)
Two ends are connected with the foreboard (41), the middle bending plate (5) be located at the upper bending plate (2) and the lower bending plate (3) it
Between；Or, the protrusion direction of the middle bending plate (5) is with the protrusion direction of the back plate (42) on the contrary, and the middle bending plate
(5) two ends are connected with the back plate (42), and the middle bending plate (5) is located at the upper bending plate (2) and the lower bending plate
(3) between.
6. beam structure according to claim 3, it is characterised in that also including gusset (6), the gusset (6) perpendicular to
The foreboard (41).
7. beam structure according to claim 6, it is characterised in that the quantity at least two of the gusset (6), each institute
State gusset (6) interval setting.
8. beam structure according to claim 2, it is characterised in that also including otic placode (7), the otic placode (7) is erected on
On the outside of the foreboard (41), the otic placode (7) is provided with mounting hole.
9. beam structure according to claim 8, it is characterised in that the otic placode (7) includes two, two otic placodes
(7) longitudinal centre line relative to the upper bending plate (2) is symmetrical arranged.
10. beam structure according to claim 2, it is characterised in that the upper bending plate (2) and/or the lower bending
Plate (3) is arch.
11. a kind of rig, it is characterised in that including any described beam structure of rig outer arm (9) and claim 1-10, institute
State beam structure and be installed on the rig outer arm (9), and the transversary is convex away from the direction of the rig outer arm (9)
Rise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564463.4A CN107178340B (en) | 2017-07-12 | 2017-07-12 | Crossbeam structure and rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710564463.4A CN107178340B (en) | 2017-07-12 | 2017-07-12 | Crossbeam structure and rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107178340A true CN107178340A (en) | 2017-09-19 |
| CN107178340B CN107178340B (en) | 2020-03-20 |
Family
ID=59837654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710564463.4A Active CN107178340B (en) | 2017-07-12 | 2017-07-12 | Crossbeam structure and rig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107178340B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2233643A2 (en) * | 2009-03-27 | 2010-09-29 | Hitachi Construction Machinery Co., Ltd | Two-member connecting device, in particular for a multi-boom hydraulic excavator |
| CN203667798U (en) * | 2013-10-28 | 2014-06-25 | 丹东港集团有限公司 | Light-weight high-strength cross beam lifting appliance |
| CN204729030U (en) * | 2015-06-05 | 2015-10-28 | 湖南三一石油科技有限公司 | Oil drilling and extracting equipment, iron driller and boom device thereof |
| CN205151548U (en) * | 2015-11-05 | 2016-04-13 | 徐工集团工程机械股份有限公司 | Hoist compensating beam and hoist |
| CN106379824A (en) * | 2016-09-30 | 2017-02-08 | 沈阳建筑大学 | Supporting structure of tower crane |
| CN106467275A (en) * | 2015-08-18 | 2017-03-01 | 徐工集团工程机械股份有限公司 | A kind of basic arm attachment structure and with car arm-folding crane |
-
2017
- 2017-07-12 CN CN201710564463.4A patent/CN107178340B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2233643A2 (en) * | 2009-03-27 | 2010-09-29 | Hitachi Construction Machinery Co., Ltd | Two-member connecting device, in particular for a multi-boom hydraulic excavator |
| CN203667798U (en) * | 2013-10-28 | 2014-06-25 | 丹东港集团有限公司 | Light-weight high-strength cross beam lifting appliance |
| CN204729030U (en) * | 2015-06-05 | 2015-10-28 | 湖南三一石油科技有限公司 | Oil drilling and extracting equipment, iron driller and boom device thereof |
| CN106467275A (en) * | 2015-08-18 | 2017-03-01 | 徐工集团工程机械股份有限公司 | A kind of basic arm attachment structure and with car arm-folding crane |
| CN205151548U (en) * | 2015-11-05 | 2016-04-13 | 徐工集团工程机械股份有限公司 | Hoist compensating beam and hoist |
| CN106379824A (en) * | 2016-09-30 | 2017-02-08 | 沈阳建筑大学 | Supporting structure of tower crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107178340B (en) | 2020-03-20 |
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