CN208750152U - Telescopic jib system and engineering machinery - Google Patents
Telescopic jib system and engineering machinery Download PDFInfo
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- CN208750152U CN208750152U CN201821232461.1U CN201821232461U CN208750152U CN 208750152 U CN208750152 U CN 208750152U CN 201821232461 U CN201821232461 U CN 201821232461U CN 208750152 U CN208750152 U CN 208750152U
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- 238000000034 method Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 7
- 239000004677 Nylon Substances 0.000 description 6
- 229920001778 nylon Polymers 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model relates to a kind of telescopic jib system and engineering machinery, wherein telescopic jib system comprising: the first joint arm；Second joint arm, relatively described first joint arm are mounted slidably, and the first end of second joint arm is set to the outside of first joint arm, and second end is set in first joint arm；Drag chain；First chase is slidingly disposed at the outside of first joint arm；Second chase is slidingly disposed in first chase, and its first end is pierced by first chase and is connected to second joint arm, and second end is pierced by first chase and is connected to the drag chain；And limit assembly, it is set between first chase and second chase, drives first chase mobile for realizing second chase.The cooperation of the utility model the first chase and the second chase, extends chase to the bearing length of drag chain, when effectively preventing boom frame telescopic, the problem of drag chain is worn and chase clamping stagnation risk.
Description
Technical field
The utility model relates to engineering machinery field more particularly to a kind of telescopic jib systems and engineering machinery.
Background technique
Drag chain system is widely used in boom frame telescopic class engineering mechanical device, and equipment is all external drag chain mostly
System, in order to save drag chain material, external drag chain system is generally using the chase for increasing by one section of conveying oil pipe and cable.
As shown in Fig. 1 (a), Fig. 1 (b), the first end of chase 3 ' is connected to the second joint arm 2 ', the second end of chase 3 '
It is connected to drag chain 4 ', chase 3 ' is supported by being set to the bracket 5 ' of the first joint arm 1 '.Due to long by space layout and cantilever crane
The limitation of degree, the length of chase 3 ' be it is certain, when second joint arm 2 ' is stretched out, if stretching out stroke is greater than chase 3 '
The tie point A of length, drag chain 4 ' and chase 3 ' will cross bracket 5 ', so that drag chain 4 ' is generated abrasion, and due to chase
Oil pipe, the cable weight of 3 ' and its inside, tie point A have certain sag of chain, and when the second joint arm 2 ' retraction, tie point A is just
Bracket 5 ' cannot be easily crossed, to cause catching phenomenon.
Utility model content
One of purpose of the utility model is to propose a kind of telescopic jib system and engineering machinery, to a certain extent
Solves drag chain wear problem.
Some embodiments of the utility model provides a kind of telescopic jib system comprising: the first joint arm；Second section
Arm, relatively described first joint arm are mounted slidably, and the first end of second joint arm is set to the outside of first joint arm, the
Two ends are set in first joint arm；Drag chain；First chase is slidingly disposed at the outside of first joint arm；Second pipe
Wire casing is slidingly disposed in first chase, and its first end is pierced by first chase and is connected to described second
Joint arm, second end are pierced by first chase and are connected to the drag chain；And limit assembly, it is set to first chase
Between second chase, drive first chase mobile for realizing second chase.
Optionally, first joint arm is fixed arm or telescopic arms.
Optionally, telescopic jib system further include: bracket, set on the outside of first joint arm, for holding described
One chase.
Optionally, the bracket be equipped with the first sliding block, for reduce in the first chase sliding process with the support
The friction of frame.
Optionally, the bracket includes the first bracket and the second bracket, first bracket and second tray chamber every
The one end in direction is stretched out set on nearly second joint arm of the first segment arm rest.
Optionally, first chase is equipped with first baffle, institute close to one end that second chase skids off direction
The first end for stating the second chase connects second joint arm by first support, and the first baffle is used for and described first
Frame cooperation limit.
Optionally, first chase is equipped with second baffle, and the second baffle is relative to the bracket close to described
The stretching direction of second chase, the second baffle are used to limit with the bracket.
Optionally, one end that first chase skids off direction far from second chase is equipped with third baffle, institute
Third baffle is stated for limiting with the bracket.
Optionally, the second sliding block is equipped in first chase, for reducing second chase and described first
Friction between chase.
Optionally, second sliding block includes arc shaped slider, the radian of the arc shaped slider and second chase
Outer profile matches.
Optionally, the limit assembly includes fourth gear plate inside first chase and is set to described second
Close to the block of its second end outside chase, the block is used to cooperate with the fourth gear plate and limit.
Optionally, first chase is telescopic structure comprising multiple cylindrical members, the multiple cylindrical member point
Layer is arranged, and in two neighboring cylindrical member, the cylindrical member positioned at outer layer can be driven mobile positioned at the cylindrical member of internal layer.
Some embodiments of the utility model provides a kind of engineering machinery comprising above-mentioned telescopic jib system.
Based on the above-mentioned technical proposal, the utility model at least has the advantages that
In some embodiments, telescopic jib system includes the first chase and the second chase, opposite in the second joint arm
During the first joint arm is stretched out, the second chase is driven to stretch out relative to the first chase, when the stretching of the second chase is set
After measured length, limit assembly works, and the second chase is made to drive the first chase relative to the first joint arm to the second joint arm
Direction sliding is stretched out, the cooperation of the first chase and the second chase extends chase to the bearing length of drag chain, effectively keeps away
When having exempted from boom frame telescopic, drag chain wear the problem of and chase clamping stagnation risk.
Detailed description of the invention
Attached drawing described herein is used to provide a further understanding of the present invention, and is constituted part of this application,
The exemplary embodiment of the utility model and the description thereof are used to explain the utility model, does not constitute to the improper of the utility model
It limits.In the accompanying drawings:
Fig. 1 (a) is the schematic diagram of existing telescopic jib system retracted state；
Fig. 1 (b) is the schematic diagram that existing telescopic jib system stretches out state；
Fig. 2 is the schematic diagram for the telescopic jib system retracted state that some embodiments of the utility model provide；
Fig. 3 is the schematic diagram for the telescopic jib system unfolded state that some embodiments of the utility model provide；
Fig. 4 is the axial schematic cross-sectional view for the first chase that some embodiments of the utility model provide；
Fig. 5 is the schematic cross-sectional view for the first chase vertical axial that some embodiments of the utility model provide；
Fig. 6 is the second slide block schematic diagram that some embodiments of the utility model provide；
Fig. 7 is the third slide block schematic diagram that some embodiments of the utility model provide；
Fig. 8 is the partial enlargement diagram that block is arranged in the second chase that some embodiments of the utility model provide.
Numbering in the drawing:
1 '-the first joint arm；2 '-the second joint arms；3 '-chases；4 '-drag chains；5 '-brackets；A- tie point.
The first joint arm of 1-；
The second joint arm of 2-；
The first chase of 3-；31- first baffle；32- second baffle；33- third baffle；The second sliding block of 34-；341- is fixed
Block；342- nylon slide block；35- third sliding block；351- fixing piece；352- nylon slide block；353- bolt；
The second chase of 4-；
51- block；52- fourth gear plate；
6- drag chain；
7- bracket；The first bracket of 71-；The second bracket of 72-；
8- first support；
9- guide assembly；91- guide rail；92- second support；
B- tie point.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, the technical solution in embodiment is carried out it is clear, complete
Ground description.Obviously, described embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.
Based on the embodiments of the present invention, institute obtained by those of ordinary skill in the art without making creative efforts
There are other embodiments, fall within the protection scope of the utility model.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
The limitation of novel protected range.
As shown in Figure 2 and Figure 3, the telescopic jib system provided for some embodiments of the utility model.
In some embodiments, telescopic jib system includes the first joint arm 1.Optionally, the first joint arm 1 is fixed arm, it may be assumed that
First joint arm 1 is not stretched.Alternatively, the first joint arm 1 is telescopic arms, i.e., the first joint arm 1 is scalable set on third joint arm etc..
Telescopic jib system includes the first joint arm 1 and the second joint arm 2, but is not limited to two joint arms.The utility model embodiment
The pipeline slot structure of offer can be adapted between any two joint arm.
In some embodiments, telescopic jib system includes the second joint arm 2, and opposite first joint arm 1 of the second joint arm 2 is slidably
Ground setting, the first end of the second joint arm 2 are set to the outside of the first joint arm 1, and the second end of the second joint arm 2 is set in the first joint arm 1.
In some embodiments, telescopic jib system includes drag chain 6.Further, drag chain 6 can be steel pull chain,
It can be plastics drag chain.
In some embodiments, telescopic jib system includes the first chase 3, and the first chase 3 is slidingly disposed at the
The outside of one joint arm 1.
In some embodiments, telescopic jib system include further include bracket 7, bracket 7 is set to the outside of the first joint arm 1,
Bracket 7 is slided for holding the first chase 3, the first chase 3 relative to bracket 7.
In some embodiments, the first sliding block is equipped in bracket 7, the first sliding block supports the first chase 3 for contacting, with
Reduce the friction in 3 sliding process of the first chase with bracket 7.
Further, the bottom and two sides of bracket 7 are respectively provided with the first sliding block, support the first chase 3 with contact.
In some embodiments, bracket 7 includes the first bracket 71 and the second bracket 72, the first bracket 71 and the second bracket 72
Interval is set to one end that the first joint arm 1 stretches out direction close to the second joint arm 2.First bracket 71 and the second bracket 72 are used to support simultaneously
Hold the first chase 3.
In some embodiments, telescopic jib system includes the second chase 4, and the second chase 4 is slidingly disposed at the
In one chase 3, and the first end of the second chase 4 is pierced by the first chase 3 and is connected to the second joint arm 2, the second chase 4
Second end is pierced by the first chase 3 and is connected to drag chain 6.
In some embodiments, telescopic jib system includes first support 8, and first support 8 is set to the second joint arm 2, and second
The first end of chase 4 is connected to the second joint arm 2 by first support 8.
In some embodiments, telescopic jib system includes limit assembly, and limit assembly is set to the first chase 3 and second
Between chase 4, drive the first chase 3 mobile for realizing the second chase 4.
In some embodiments, during the second joint arm 2 is stretched out relative to the first joint arm 1,4 phase of the second chase is driven
First chase 3 is stretched out, after the second chase 4 stretches out setting length, limit assembly works, and makes the second chase 4
It drives the first chase 3 to slide relative to the first joint arm 1, is slided to the stretching direction of the second joint arm 3, the first chase 3 and the
The cooperation of two chases 4 extends chase to the bearing length of drag chain 6, and the tie point B of the second chase 4 and drag chain 6 will not
Cross bracket 7, when effectively preventing boom frame telescopic, drag chain wear the problem of and chase by the risk of clamping stagnation.
In some embodiments, as shown in figure 4, the first chase 3 is equipped with close to one end that the second chase 4 skids off direction
The first end of first baffle 31, the second chase 4 connects the second joint arm 2 by first support 8, and first baffle 31 is used for and first
The cooperation limit of bracket 8.
During the second joint arm 2 retracts, first baffle 31 and the cooperation of first support 8 are limited, and the second chase 4 drives
The sliding of first chase 3.After the retraction of the second joint arm 2, first baffle 31 and the cooperation of first support 8 are limited, and prevent the first pipeline
Slot 3 is mobile to the direction of first support 8.
In some embodiments, the first chase 3 is equipped with second baffle 32, and second baffle 32 is relative to bracket 7 close to the
The stretching direction of two chases 4, second baffle 32 are used to limit with bracket 7.
During the second joint arm 2 retracts, second baffle 32 is contacted with bracket 7, shows 3 return of the first chase, no
It will continue to continue to slide to the direction far from the second joint arm 2.
In the state that the second joint arm 2 retracts, second baffle 32 and bracket 7 are limited, and prevent the first chase 3 to far from the
The direction of one bracket 8 is mobile.
First baffle 31 and the cooperation of first support 8 limit, and limit in conjunction with second baffle 32 and bracket 7, for preventing the
Under the retracted mode of two joint arms 2, the double swerve of the first chase 3, and the moving limit position of the first chase 3 is limited
System.
In some embodiments, one end that the first chase 3 skids off direction far from the second chase 4 is equipped with third baffle
33, third baffle 33 is used to limit with bracket 7.The side that third baffle 33 is used to prevent the first chase 3 from stretching out to the second joint arm 2
To being moved out the first joint arm 1.
In some embodiments, it is equipped with the second sliding block 34 in the first chase 3, the second sliding block 34 is used for and the second chase
4 contact supports, to reduce the friction between the second chase 4 and the first chase 3.
In some embodiments, the second sliding block 34 includes arc shaped slider, the radian of arc shaped slider and the second chase 4 outside
Profile matches.
In some embodiments, the second sliding block 34 is set to the interior two sides of the bottom of the first chase 3.
Optionally, as shown in fig. 6, the second sliding block 34 includes two fixed blocks 341 and nylon slide block 342, two fixed blocks
341 are fixed on the inner wall of the first chase 3, and nylon slide block 342 is arranged between two fixed blocks 341.
In some embodiments, it is equipped with third sliding block 35 in the first chase 3, third sliding block 35 is set to the first chase 3
Inner top two sides, for 4 contact slide of the second chase, to reduce rubbing between the second chase 4 and the first chase 3
It wipes.
Optionally, as shown in fig. 7, third sliding block 35 includes fixing piece 351 and nylon slide block 352, the fixation of fixing piece 351 is set
In the inner wall of the first chase 3, nylon slide block 352 is connected to fixing piece 351 by bolt 353.
In some embodiments, as shown in figure 5,3 sets of the first chase outsides in the second chase 4, the first chase 3
Internal same section is equipped with sliding block everywhere, and two the second sliding blocks 34 are respectively arranged at left and right sides of the bottom of the first chase 3, and two
Third sliding block 35 is respectively arranged at left and right sides of the top of the first chase 3, and four sliding blocks in the same section of the first chase 3 are used
In the second chase 4 of contact.
In some embodiments, limit assembly includes the fourth gear plate 52 (as shown in Figure 4) inside the first chase 3
With the block 51 (as shown in Figure 8) for being set to its close second end of 4 outside of the second chase, block 51 with fourth gear plate 52 for matching
Close limit.
In some embodiments, the second chase 4 respectively has block 51 at one close to one end two sides of drag chain 6, and block 51 is
It is welded on the second chase 4, is equipped with fourth gear plate 52 in the inside of the first chase 3, the second chase 4 is to the second joint arm
In the 2 direction sliding processes stretched out, block 51 is contacted with the fourth gear plate 52 in the first chase 3, and the second chase 4 can band
Dynamic first chase 3 is mobile simultaneously.
In some embodiments, the first chase 3 is telescopic structure comprising multiple cylindrical members, multiple cylindrical members
Layering is arranged, and in two neighboring cylindrical member, the cylindrical member positioned at outer layer can be driven mobile positioned at the cylindrical member of internal layer.
In some embodiments, the first chase 3 is telescopic structure, and it is long to the support of drag chain to extend chase
Degree, chase realizes the free extension of cantilever crane by the risk of clamping stagnation when drag chain can be effectively prevent to wear and cantilever crane being avoided to bounce back
And retraction.
In some embodiments, limit assembly includes being set in the first chase 3 and being layered to be sheathed on outside the second chase 4
At least one retracting cylinder in week.
It is equipped with the first position limiting structure, between the retracting cylinder and the second chase 4 of the second chase 4 for realizing the
Two chases 4 drive the retracting cylinder near it to slide.
It is equipped with the second position limiting structure, between the retracting cylinder and the first chase 3 of the first chase 3 for realizing most
The sliding of the first chase 3 is driven close to the retracting cylinder of the first chase 3.
Third position limiting structure is equipped between two neighboring retracting cylinder, it is flexible for realizing one in two neighboring retracting cylinder
Cylinder drives the sliding of another retracting cylinder.The retracting cylinder positioned at internal layer being specifically as follows in two neighboring retracting cylinder drives positioned at outer
The retracting cylinder sliding of layer.
In some embodiments, telescopic jib system includes guide assembly 9, and guide assembly 9 is set to outside the first joint arm 1,
Guide assembly 9 is for being oriented to the movement of drag chain 6.
Guide assembly 9 includes guide rail 91 and second support 92, and second support 92 is fixed on the cylinder lower part of the first joint arm 1,
It is used to support guide rail 91.
Guide rail 91 is arranged in the first joint arm 1, is bolted to second support 92, and guide rail 91 is used to be oriented to drag chain 6
And support.
In one embodiment, the operating process of telescopic jib system are as follows:
Under telescopic jib retracted state, the first 3 sets of chase is in 4 outside of the second chase, first baffle 31 and second gear
Plate 32 is limited between first support 8 and the first bracket 71, to limit moving left and right for the first chase 3.
Inside telescopic jib when telescopic oil cylinder movement, the first end of the second chase 4 is fixed on the of 2 arm head of the second joint arm
On one bracket 8, the second chase 4 is moved with the second joint arm 2, in 3 internal slide of the first chase, at this point, the first chase 3 is not
It is dynamic.After fourth gear plate 52 inside block 51 and the first chase 3 inside the second chase 4 contacts, 4 band of the second chase
Opposite first bracket 71 of dynamic first chase 3 and the second bracket 72 slide.
When telescopic jib is stretched over maximum position, due in the block 51 and the first chase 3 inside the second chase 4
The position-limiting action of the fourth gear plate 52 in portion, the second chase 4 is without departing from the first chase 3；And due to third baffle 33 and
The position-limiting action of two brackets 72, the first chase 3 are also slided in the first bracket 71 and the second bracket 72 always, without departing from.
When telescopic jib bounces back again, the second chase 4 first bounces back, first in first support 8 and the first chase 3
When baffle 31 contacts, the second chase 4 will drive the first chase 3 to bounce back, when the second joint arm 2 retracts to minimum position, the
Two chases 4 and the first chase 3 are all restored to reset condition.
The chase of telescopic jib system is using the double-deck or double-deck above telescopic structure, and chase is in any angle of cantilever crane
There is no the risk of clamping stagnation when can stretch and bounce back with cantilever crane synchronous extension and retraction, chase down, structure is reliable, protects drag chain
It is injury-free.
In the description of the present invention, it should be understood that being limited using the words such as " first ", " second ", " third "
Determine components, it is only for convenient for distinguishing to above-mentioned parts, there is no Stated otherwise such as, there is no special for above-mentioned word
Meaning, therefore should not be understood as the limitation to scope of protection of the utility model.
Finally it should be noted that: above embodiments are only to illustrate the technical solution of the utility model rather than limit it
System；Although the utility model has been described in detail with reference to the preferred embodiment, those of ordinary skill in the art should
Understand: specific implementation of the utility model can still be modified or is equally replaced to some technical characteristics
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (13)
1. a kind of telescopic jib system characterized by comprising
First joint arm (1)；
Second joint arm (2), relatively described first joint arm (1) are mounted slidably, and the first end of second joint arm (2) is set to institute
The outside of the first joint arm (1) is stated, second end is set in first joint arm (1)；
Drag chain (6)；
First chase (3) is slidingly disposed at the outside of first joint arm (1)；
Second chase (4) is slidingly disposed in first chase (3), and its first end is pierced by first pipeline
Slot (3) is connected to second joint arm (2), and second end is pierced by first chase (3) and is connected to the drag chain (6)；With
And
Limit assembly is set between first chase (3) and second chase (4), for realizing second pipe
Wire casing (4) drives first chase (3) mobile.
2. telescopic jib system as described in claim 1, which is characterized in that first joint arm (1) is fixed arm or can stretch
Contracting arm.
3. telescopic jib system as described in claim 1, which is characterized in that further include: bracket (7) is set to the first segment
The outside of arm (1), for holding first chase (3).
4. telescopic jib system as claimed in claim 3, which is characterized in that the bracket (7) is equipped with the first sliding block, for subtracting
Friction in few first chase (3) sliding process with the bracket (7).
5. telescopic jib system as claimed in claim 3, which is characterized in that the bracket (7) include the first bracket (71) and
Second bracket (72), first bracket (71) and second bracket (72) interval are set to first joint arm (1) close to institute
State one end that the second joint arm (2) stretch out direction.
6. telescopic jib system as described in claim 1, which is characterized in that first chase (3) is close to described second
One end that chase (4) skids off direction is equipped with first baffle (31), and the first end of second chase (4) passes through first support
(8) second joint arm (2) is connected, the first baffle (31) is used to cooperate with the first support (8) and limit.
7. telescopic jib system as claimed in claim 3, which is characterized in that first chase (3) is equipped with second baffle
(32), the second baffle (32) relative to the bracket (7) close to the stretching direction of second chase (4), described the
Two baffles (32) are used to limit with the bracket (7).
8. telescopic jib system as claimed in claim 3, which is characterized in that first chase (3) is far from described second
One end that chase (4) skids off direction is equipped with third baffle (33), and the third baffle (33) is used to limit with the bracket (7)
Position.
9. telescopic jib system as described in claim 1, which is characterized in that it is sliding to be equipped with second in first chase (3)
Block (34), for reducing the friction between second chase (4) and first chase (3).
10. telescopic jib system as claimed in claim 9, which is characterized in that second sliding block (34) includes arc shaped slider,
The radian of the arc shaped slider and the outer profile of second chase (4) match.
11. telescopic jib system as described in claim 1, which is characterized in that the limit assembly includes being set to described first
The internal fourth gear plate (52) of chase (3) and the block (51) for being set to its external close second end of second chase (4),
The block (51) is used to cooperate with the fourth gear plate (52) and limit.
12. telescopic jib system as described in claim 1, which is characterized in that first chase (3) is extension type knot
Structure comprising multiple cylindrical members, the multiple cylindrical member layering is arranged, in two neighboring cylindrical member, positioned at the cylindrical member of internal layer
The cylindrical member positioned at outer layer can be driven mobile.
13. a kind of engineering machinery, it is characterised in that: including the described in any item telescopic jib systems of such as claim 1~12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232461.1U CN208750152U (en) | 2018-07-31 | 2018-07-31 | Telescopic jib system and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821232461.1U CN208750152U (en) | 2018-07-31 | 2018-07-31 | Telescopic jib system and engineering machinery |
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| Publication Number | Publication Date |
|---|---|
| CN208750152U true CN208750152U (en) | 2019-04-16 |
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ID=66058310
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821232461.1U Active CN208750152U (en) | 2018-07-31 | 2018-07-31 | Telescopic jib system and engineering machinery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709013A (en) * | 2018-07-31 | 2018-10-26 | 徐工集团工程机械有限公司 | Telescopic jib system and engineering machinery |
| CN112627022A (en) * | 2020-11-06 | 2021-04-09 | 徐州徐工随车起重机有限公司 | Telescopic arm of cantilever type bridge inspection vehicle and bridge inspection vehicle thereof |
-
2018
- 2018-07-31 CN CN201821232461.1U patent/CN208750152U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108709013A (en) * | 2018-07-31 | 2018-10-26 | 徐工集团工程机械有限公司 | Telescopic jib system and engineering machinery |
| CN108709013B (en) * | 2018-07-31 | 2023-10-03 | 江苏徐工工程机械研究院有限公司 | Telescopic boom system and engineering machinery |
| CN112627022A (en) * | 2020-11-06 | 2021-04-09 | 徐州徐工随车起重机有限公司 | Telescopic arm of cantilever type bridge inspection vehicle and bridge inspection vehicle thereof |
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Effective date of registration: 20220722 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: Jiangsu Xugong Construction Machinery Research Institute Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |