CN108708749A - A kind of rollover stand bracing means - Google Patents
A kind of rollover stand bracing means Download PDFInfo
- Publication number
- CN108708749A CN108708749A CN201810467443.XA CN201810467443A CN108708749A CN 108708749 A CN108708749 A CN 108708749A CN 201810467443 A CN201810467443 A CN 201810467443A CN 108708749 A CN108708749 A CN 108708749A
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- Prior art keywords
- curved
- curved rod
- connecting pole
- rollover stand
- hole
- Prior art date
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 239000003351 stiffener Substances 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 4
- 230000007306 turnover Effects 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
- E21D11/406—Placing endless lining elements, e.g. from reels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of rollover stand bracing means, the segment overturning bracing means of the present invention can greatly improve stability of the section of jurisdiction in overturning, ensure the safety of construction, the present invention is by being arranged curved rod, and curved rod is inserted into the curved hole of section of jurisdiction, and curved rod is connected on turnover device using iron chain, safety when overturning can be improved, and curved rod has preferable stability in curved hole, it can effectively prevent unexpectedly occurring, in addition, the present invention devises multiple embodiments to curved rod, the safety used can more be improved using the design of bend pipe, the effectively stability of enhancing segment overturning.
Description
Technical field
The present invention relates to a kind of rollover stand bracing means, belong to section of jurisdiction ruggedized equipment technical field.
Background technology
In the prior art, section of jurisdiction usually used at present is manually bundled on concrete pipe sheet by steel wire rope
, it is then lifted to vehicle up direction, then by manually adjusting direction, slowly put down after so that section of jurisdiction is tilted, its concave surface is made to stop upward
In required position.However, the large-scale components such as section of jurisdiction overturning generally existing storage space is nervous at present, using steel wire rope as the gold of representative
The rigid Current Collector Sleave such as category equal hoisting and hangings problem more to the damage of section of jurisdiction contact point.Moreover, section of jurisdiction is larger because itself conducting oneself with dignity, every piece
About 5 tons or so of section of jurisdiction, inertia is larger in artificial switching process, and flip angle cannot be controlled well, is easy to be formed larger
Breakage of colliding with, seriously affect the water resistance of section of jurisdiction.
In this regard, occurring the segment overturning device for being specifically applied to segment overturning at present, this device is usually to utilize to turn over
Pivoted frame, and driven using hydraulic cylinder, this rollover stand so that the overturning of section of jurisdiction is more convenient simple.But section of jurisdiction is being turned over
When being overturn on pivoted frame, since the weight of section of jurisdiction is very big, inertia is very big in switching process so that its in overturning still
It is unstable, therefore, a kind of bracing means of rollover stand how is designed, to improve stability of the section of jurisdiction when being overturn on rollover stand
And fastness, there is extremely important effect for the construction of section of jurisdiction.
The present invention improves section of jurisdiction when being overturn on rollover stand in view of the above problems, provide a kind of rollover stand bracing means
Stability and fastness.
Invention content
To achieve the above object, the present invention provides the following technical solutions：A kind of rollover stand bracing means comprising reinforce
Frame, support base, support plate, iron chain and curved rod stiffener assembly, the support base are fixed at rollover stand one end, the reinforcement
Frame is welded and fixed the other end being arranged in the rollover stand, and the support base is vertically arranged with close to one end of the hog frame
Support plate, the hog frame welding are arranged in the support plate, and the combination of the vertical direction of the support plate and support base adds
Strong frame and rollover stand constitute diameter triangular structure, and the bevel edge that the hog frame is right angled triangle；It is characterized in that,
When overturning, section of jurisdiction setting is on the support base and support plate；
The curved rod stiffener assembly includes at least curved rod, iron chain and iron locking fixed board；
The iron locking fixed board is fixed in the hog frame or support plate, and iron locking fixed board is located at far
Side from the section of jurisdiction；
One end of the iron chain is fixed on the iron locking fixed board；
The other end of the iron chain connects the end of the curved rod；
In overturning, the curved rod, which stretches into, to be plugged in the curved hole of section of jurisdiction.
Further, preferably, one end of the connection iron chain of the curved rod is provided with the connection iron chain
Clamping ring；
It is attached using dismountable connection type between the clamping ring and the iron chain.
Further, preferably, the curved rod is arcuate structure, the curved rod is arranged close to the side of the clamping ring
There is the limit shaft shoulder that the insertion depth to the curved rod is limited；
The both ends in the curved hole of the section of jurisdiction are respectively arranged with the ladder hole slot more than curved rod diameter, and curved rod stretches into the curved hole
Afterwards, the ladder hole slot inner sleeve is equipped with upper elastic collision gum cover and lower elastic collision gum cover, by upper elastic collision gum cover under
Elastic collision gum cover increases curved rod withdrawal force.
Further, it links together preferably, being used between the clamping ring and the iron chain and just tearing connection component open,
Wherein, the connection component of just tearing open includes connecting pole one, connecting pole two, locking lasso and clamp spring, wherein the connecting pole one
One end is connected to the clamping ring, and one end of the connecting pole two is connected to the iron chain, the other end of the connecting pole one
Be provided with the hook one of L-type, the other end of the connecting pole two is provided with the hook two of L-type, the hook one and hook two it
Between be connected together together, the place that is connected together between the connecting pole one and connecting pole two and connecting pole one and connecting pole two
It is the cylindrical structure of same diameter, positioning shaft shoulder is provided on the connecting pole two, the outer cover of the connecting pole one is equipped with
The locking lasso, the lock sleeve snare is located at this and is connected together after being connected together between the connecting pole one and connecting pole two
Place, and one end of the locking lasso carries out axially position by the positioning shaft shoulder, the other end of the locking lasso is by clamp spring
Positioning, the clamp spring are arranged on the jump-ring slot of the connecting pole one.
Further, preferably, one end far from the clamping ring is additionally provided with fastener hole, the fastening in the curved rod
After the curved hole of the section of jurisdiction is stretched out in hole, and the curved rod stretches into the curved hole in place, fastener is inserted on the fastener hole, it is described
The size of fastener is more than the curved pore diameter size.
Further, preferably, curved rod in the curved rod stiffener assembly using with loosen the winding pipe assembly of effect come
Instead of.
Further, preferably, the winding pipe assembly includes bend pipe and multiple fins, each fin is arranged in described
On the excircle of bend pipe, and the angle of the fin and the axis of the bend pipe is arranged for variable, after being inserted into the curved hole, leads to
The fin is crossed to prevent the loosening of bend pipe.
Further, it preferably, the bend pipe is internally provided with the identical curved hole of curvature therewith, can be slided in the curved hole
Dynamic is provided with inner prop, and the position that the fin is located on the bend pipe is provided with inclined radial hole slot, and the inner prop stretches into
To make the inner end of the fin hingedly be arranged on the hinged circle on the inner prop in the radial direction hole slot, described in sliding
Inner prop makes the fin leak out the length variation of the bend pipe outer wall.
Further, preferably, the outside of the limit shaft shoulder of the bend pipe is provided with the tune extended along its axis direction
Slot is saved, slidable adjusting block is set in the regulating tank, the adjusting block is fixed on the inner prop, passes through the tune
Locking nub drives the axial direction of the inner prop to move, and sets between the top of the inner prop and the curved bore ends cell wall of the bend pipe
It is equipped with tension spring.
Compared with prior art, the beneficial effects of the invention are as follows：
The segment overturning bracing means of the present invention can greatly improve stability of the section of jurisdiction in overturning, ensure the peace of construction
Quan Xing, the present invention is inserted by the way that curved rod is arranged, and by curved rod in the curved hole of section of jurisdiction, and curved rod is connected to overturning using iron chain
On device, safety when overturning can be improved, and curved rod has preferable stability in curved hole, can effectively prevent accident
Generation the safety used can more be improved using the design of bend pipe in addition, the present invention devises multiple embodiments to curved rod
Property, effectively enhance the stability of segment overturning.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of rollover stand bracing means of the present invention；
Fig. 2 is a kind of structural schematic diagram of the curved rod of rollover stand bracing means of the present invention；
Fig. 3 is a kind of upper elastic collision gum cover of rollover stand bracing means of the present invention and lower elastic collision gum cover structural representation
Figure；
Fig. 4 is that a kind of present invention rollover stand bracing means just tears connecting component structure schematic diagram open；
Fig. 5 is a kind of winding pipe assembly structural schematic diagram of rollover stand bracing means of the present invention；
Fig. 6 is a kind of winding pipe assembly partial enlargement structural representation of rollover stand bracing means of the present invention；
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 6 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of rollover stand bracing means comprising hog frame 2,
Support base 5, support plate 4, iron chain 6 and curved rod stiffener assembly, the support 5 is fixed at 1 one end of rollover stand, described to add
Strong frame 2 is welded and fixed the other end being arranged in the rollover stand 1, and one end of the close hog frame 2 of the support base 5 is vertical
It is provided with support plate 4, the welding of the hog frame 2 is arranged in the support plate 4, the vertical side of the support plate 4 and support base 5
To combination, hog frame 2 and rollover stand 1 constitute diameter triangular structure, and the hog frame 2 is the oblique of right angled triangle
Side；It is characterized in that,
When overturning, the setting of section of jurisdiction 8 is on the support base 5 and support plate 4；
The curved rod stiffener assembly includes at least curved rod 7, iron chain 6 and iron locking fixed board 3；
The iron locking fixed board 3 is fixed in the hog frame 2 or support plate 4, and iron locking fixed board 3
In the side far from the section of jurisdiction；
One end of the iron chain 6 is fixed on the iron locking fixed board 3；
The other end of the iron chain 6 connects the end of the curved rod 7；
In overturning, the curved rod 7, which stretches into, to be plugged in the curved hole of section of jurisdiction.
In the present embodiment, one end of the connection iron chain of the curved rod is provided with the connection for connecting the iron chain
Circle 10；It is attached using dismountable connection type between the clamping ring and the iron chain.
As more preferably embodiment, the curved rod is arcuate structure, and the curved rod is set close to the side of the clamping ring
It is equipped with the limit shaft shoulder 9 limited to the insertion depth of the curved rod；
The both ends in the curved hole of the section of jurisdiction are respectively arranged with the ladder hole slot more than curved rod diameter, and curved rod stretches into the curved hole
Afterwards, the ladder hole slot inner sleeve is equipped with upper elastic collision gum cover 15 and lower elastic collision gum cover 16, passes through upper elastic collision gum cover
15 and lower elastic collision gum cover 16 increase curved rod withdrawal force.
As more preferably embodiment, one is connected to using just tearing connection component open between the clamping ring and the iron chain
It rises, wherein the connection component of just tearing open includes connecting pole 1, connecting pole 2 17, locking lasso 13 and clamp spring 12, wherein institute
The one end for stating connecting pole 1 is connected to the clamping ring, and one end of the connecting pole 2 17 is connected to the iron chain, described
The other end of connecting pole one is provided with the hook 1 of L-type, and the other end of the connecting pole two is provided with the hook 2 19 of L-type,
Be connected together between the hook 1 and hook 2 19 together, the connecting pole one and connecting pole two and connecting pole one with
The place of being connected together between connecting pole two is the cylindrical structure of same diameter, and positioning shaft shoulder is provided on the connecting pole two
14, the outer cover of the connecting pole one is equipped with the locking lasso 13, is connected together between the connecting pole one and connecting pole two
The locking lasso 13 is set in the place that is connected together afterwards, and one end of the locking lasso 13 is carried out by the positioning shaft shoulder 14
The other end of axially position, the locking lasso is positioned by clamp spring 12, and the clamp spring in the connecting pole one is arranged in the clamp spring 12
On slot.
Wherein, as more preferably embodiment, in order to further improve the security can, in the curved rod far from the clamping ring
One end is additionally provided with fastener hole 11, and the fastener hole 11 stretches out the curved hole of the section of jurisdiction, and the curved rod stretches into the curved hole and arrives
Behind position, fastener is inserted on the fastener hole, the size of the fastener is more than the curved pore diameter size.
As more preferably embodiment, curved rod in the curved rod stiffener assembly is using with loosening the winding pipe assembly of effect come generation
It replaces.The winding pipe assembly includes bend pipe 24 and multiple fins 25, and each fin 25 is arranged in the excircle of the bend pipe 24
On, and the angle of the axis of the fin and the bend pipe is that variable is arranged, behind the insertion curved hole, by the fin come
Prevent the loosening of bend pipe.The bend pipe 24 is internally provided with the identical curved hole of curvature therewith, is slidably set in the curved hole
It is equipped with inner prop 23, the position that the fin is located on the bend pipe is provided with inclined radial hole slot 26, and the inner prop stretches into institute
It states in radial hole slot 26 to make the inner end of the fin 25 hingedly be arranged on the hinged circle 27 on the inner prop, passes through sliding
The inner prop makes the fin leak out the length variation of the bend pipe outer wall.
As more preferably embodiment, the outside of the limit shaft shoulder of the bend pipe is provided with the adjusting extended along its axis direction
Slot, the interior slidable adjusting block 22 of setting of the regulating tank, the adjusting block are fixed on the inner prop, pass through the tune
Locking nub drives the axial direction of the inner prop to move, and sets between the top of the inner prop and the curved bore ends cell wall of the bend pipe
It is equipped with tension spring 21.
The segment overturning bracing means of the present invention can greatly improve stability of the section of jurisdiction in overturning, ensure the peace of construction
Quan Xing, the present invention is inserted by the way that curved rod is arranged, and by curved rod in the curved hole of section of jurisdiction, and curved rod is connected to overturning using iron chain
On device, safety when overturning can be improved, and curved rod has preferable stability in curved hole, can effectively prevent accident
Generation the safety used can more be improved using the design of bend pipe in addition, the present invention devises multiple embodiments to curved rod
Property, effectively enhance the stability of segment overturning.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
Understanding without departing from the principles and spirit of the present invention can carry out these embodiments a variety of variations, modification, replace
And modification, the scope of the present invention is defined by the appended.
Claims (9)
1. a kind of rollover stand bracing means comprising hog frame, support base, support plate, iron chain and curved rod stiffener assembly, it is described
Support base is fixed at rollover stand one end, and the hog frame is welded and fixed the other end being arranged in the rollover stand, the branch
Support seat is vertically arranged with support plate close to one end of the hog frame, and the hog frame welding is arranged in the support plate,
Combination, hog frame and the rollover stand of the vertical direction of the support plate and support base constitute diameter triangular structure, and described
Hog frame is the bevel edge of right angled triangle；It is characterized in that,
When overturning, section of jurisdiction setting is on the support base and support plate；
The curved rod stiffener assembly includes at least curved rod, iron chain and iron locking fixed board；
The iron locking fixed board is fixed in the hog frame or support plate, and iron locking fixed board is located remotely from institute
State the side of section of jurisdiction；
One end of the iron chain is fixed on the iron locking fixed board；
The other end of the iron chain connects the end of the curved rod；
In overturning, the curved rod, which stretches into, to be plugged in the curved hole of section of jurisdiction.
2. a kind of rollover stand bracing means according to claim 1, it is characterised in that：The connection iron lock of the curved rod
One end of chain is provided with the clamping ring for connecting the iron chain；
It is attached using dismountable connection type between the clamping ring and the iron chain.
3. a kind of rollover stand bracing means according to claim 2, it is characterised in that：The curved rod is arcuate structure, institute
That states curved rod is provided with the limit shaft shoulder limited to the insertion depth of the curved rod close to the side of the clamping ring；
The both ends in the curved hole of the section of jurisdiction are respectively arranged with the ladder hole slot more than curved rod diameter, after curved rod stretches into the curved hole,
The ladder hole slot inner sleeve is equipped with upper elastic collision gum cover and lower elastic collision gum cover, passes through upper elastic collision gum cover and lower elasticity
Gum cover is collided to increase curved rod withdrawal force.
4. a kind of rollover stand bracing means according to claim 2, it is characterised in that：The clamping ring and the iron chain
Between linked together using just tearing connection component open, wherein the connection component of just tearing open includes connecting pole one, connecting pole two, lock
Fixed circle and clamp spring, wherein one end of the connecting pole one is connected to the clamping ring, and one end of the connecting pole two is connected to
The other end of the iron chain, the connecting pole one is provided with the hook one of L-type, and the other end of the connecting pole two is provided with L
The hook two of type is connected together together between the hook one and hook two, the connecting pole one and connecting pole two and even
The cylindrical structure that the place of being connected together between column one and connecting pole two is same diameter is connect, it is fixed to be provided on the connecting pole two
The outer cover of the position shaft shoulder, the connecting pole one is equipped with the locking lasso, and company is engaged between the connecting pole one and connecting pole two
It connects the rear lock sleeve snare and is located at the place that is connected together, and one end of the locking lasso is carried out axially by the positioning shaft shoulder
The other end of positioning, the locking lasso is positioned by clamp spring, and the clamp spring is arranged on the jump-ring slot of the connecting pole one.
5. a kind of rollover stand bracing means according to claim 3, it is characterised in that：Far from the connection in the curved rod
One end of circle is additionally provided with fastener hole, and the fastener hole stretches out the curved hole of the section of jurisdiction, and the curved rod stretches into the curved hole and arrives
Behind position, fastener is inserted on the fastener hole, the size of the fastener is more than the curved pore diameter size.
6. a kind of rollover stand bracing means according to claim 3, it is characterised in that：It is curved in the curved rod stiffener assembly
Stick is replaced using with loosening the winding pipe assembly of effect.
7. a kind of rollover stand bracing means according to claim 3, it is characterised in that：The winding pipe assembly include bend pipe and
Multiple fins, each fin are arranged on the excircle of the bend pipe, and the angle of the fin and the axis of the bend pipe
Degree is that variable is arranged, and after being inserted into the curved hole, the loosening of bend pipe is prevented by the fin.
8. a kind of rollover stand bracing means according to claim 3, it is characterised in that：The bend pipe is internally provided with therewith
The identical curved hole of curvature, inner prop is slidably provided in the curved hole, and the position that the fin is located on the bend pipe is set
It is equipped with inclined radial hole slot, the inner prop stretches into the radial hole slot to make the inner end of the fin hingedly be arranged in institute
It states on the hinged circle on inner prop, is changed by sliding the length that the inner prop so that the fin leaks out the bend pipe outer wall.
9. a kind of rollover stand bracing means according to claim 3, it is characterised in that：Outside the limit shaft shoulder of the bend pipe
Portion is provided with the regulating tank extended along its axis direction, and slidable adjusting block, the adjusting block is arranged in the regulating tank
It is fixed on the inner prop, drives the axial direction of the inner prop to move by the adjusting block, the top of the inner prop
It is provided with tension spring between portion and the curved bore ends cell wall of the bend pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810467443.XA CN108708749B (en) | 2018-05-10 | 2018-05-10 | A kind of rollover stand bracing means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810467443.XA CN108708749B (en) | 2018-05-10 | 2018-05-10 | A kind of rollover stand bracing means |
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| Publication Number | Publication Date |
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| CN108708749A true CN108708749A (en) | 2018-10-26 |
| CN108708749B CN108708749B (en) | 2019-07-26 |
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ID=63869016
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810467443.XA Active CN108708749B (en) | 2018-05-10 | 2018-05-10 | A kind of rollover stand bracing means |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29713510U1 (en) * | 1997-07-30 | 1998-08-27 | Krones Ag Hermann Kronseder Maschinenfabrik, 93073 Neutraubling | Rotary filler |
| JP3250656B2 (en) * | 1997-01-14 | 2002-01-28 | 株式会社椿本チエイン | Transport chains |
| CN201195661Y (en) * | 2008-03-27 | 2009-02-18 | 中国二十冶建设有限公司 | Permanent deflection-proof sheet metal sling |
| CN206126660U (en) * | 2016-10-26 | 2017-04-26 | 中铁一局集团天津建设工程有限公司 | Simple and easy hoist in section of jurisdiction |
-
2018
- 2018-05-10 CN CN201810467443.XA patent/CN108708749B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3250656B2 (en) * | 1997-01-14 | 2002-01-28 | 株式会社椿本チエイン | Transport chains |
| DE29713510U1 (en) * | 1997-07-30 | 1998-08-27 | Krones Ag Hermann Kronseder Maschinenfabrik, 93073 Neutraubling | Rotary filler |
| CN201195661Y (en) * | 2008-03-27 | 2009-02-18 | 中国二十冶建设有限公司 | Permanent deflection-proof sheet metal sling |
| CN206126660U (en) * | 2016-10-26 | 2017-04-26 | 中铁一局集团天津建设工程有限公司 | Simple and easy hoist in section of jurisdiction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108708749B (en) | 2019-07-26 |
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Address after: Xianglushan Town Government, Lihe Avenue, Xianglushan Town, Yiyang County, Luoyang City, Henan Province, 471000 Patentee after: Luoyang Chengtou Engineering Construction Co.,Ltd. Address before: Xianglushan Town Government, Lihe Avenue, Xianglushan Town, Yiyang County, Luoyang City, Henan Province, 471000 Patentee before: LUOYANG ZHONGTIAN GREEN COMPONENT Co.,Ltd. |
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