CN107720538A - Intelligent three-dimensional warehouse hanger locking apparatus - Google Patents
Intelligent three-dimensional warehouse hanger locking apparatus Download PDFInfo
- Publication number
- CN107720538A CN107720538A CN201711087025.XA CN201711087025A CN107720538A CN 107720538 A CN107720538 A CN 107720538A CN 201711087025 A CN201711087025 A CN 201711087025A CN 107720538 A CN107720538 A CN 107720538A
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- China
- Prior art keywords
- suspension hook
- intelligent
- locking apparatus
- body framework
- pushing mechanism
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000000725 suspension Substances 0.000 claims abstract description 97
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims description 16
- 230000008450 motivation Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 32
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 239000010727 cylinder oil Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/28—Duplicate, e.g. pivoted, members engaging the loads from two sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The present invention provides a kind of intelligent three-dimensional warehouse hanger locking apparatus, it is arranged on spreader body framework, including swinging suspension hook and pushing mechanism, the swing suspension hook is arranged on spreader body framework by the first bearing pin, the pushing mechanism first end is installed in rotation on spreader body framework, second end is with swinging suspension hook rotation connection, the swing suspension hook can be under pushing mechanism effect around the first bearing pin positive and negative rotation, switch between open and closed positions, and a position is remained at by pushing mechanism.According to being actually needed for production, it is determined whether the locking carried out between suspender and material frame connects, easy to maintenance；And when without using suspension hook is swung, open position is kept it in, is avoided interference with, improves the security reliability of equipment.
Description
Technical field
The invention belongs to metallurgical warehouse for finished product smart three-dimensional warehouse system technical field, more particularly to a kind of intelligent three-dimensional storehouse
Storehouse hanger locking apparatus.
Background technology
With the progress and development of society, the control technology of modernization be increasingly dissolved into modernization production technology it
In, nobody intelligent overhead crane control system due to it efficiently, safety, economic dispatch many advantages, be increasingly used in storehouse
In room scheduling system.
At present, for metallurgical finished product (including：Coil of strip, section bar etc.) the intelligent handling technology that routinizes have been obtained for extensively
Using, significant effect, the purpose of cost efficiency is realized.As client goes out to the utilization ratio and coil of strip in warehouse, is put in storage effect
Rate requires more and more higher, has begun to make for the type solid frame intelligent repository of coil of strip and section bar input at present abroad
With.At present, foreign countries' hanger locking apparatus used by the type solid frame intelligent repository used, using mechanical self-locking
Device, the apparatus structure is simple, cost is relatively low.But equally exist deficiency：Self-locking device slideway is easily recessed caused by abrasion
Hole, causes self-locking not to be automatically performed, causes part locking device to fail normal work, cause material frame to tumble, cause safe thing
Therefore and slideway safeguard cumbersome in device interior；Meanwhile self-locking device adaptability is poor, often acting once must just realize
90 ° rotation, when that need not rotate, be only only completed steel coil handling action when, implement just it is cumbersome, influence automation behaviour
Make.
Therefore, it is highly desirable to explore a kind of intelligent three-dimensional warehouse hanger locking apparatus, improves unmanned core process dress
Standby reliability and maintainability, while adapt to the demand of various working.
The content of the invention
The deficiencies in the prior art in view of the above, it is an object of the invention to provide a kind of intelligent three-dimensional warehouse suspender lock
Tight device, various working is adapted to, improve the security reliability of equipment.
In order to achieve the above objects and other related objects, technical solution of the present invention is as follows：
A kind of intelligent three-dimensional warehouse hanger locking apparatus, is arranged on spreader body framework, including swings suspension hook and promotion
Mechanism, the swing suspension hook are arranged on spreader body framework by the first bearing pin, and the pushing mechanism first end is rotationally
On spreader body framework, the second end can act on swinging suspension hook rotation connection, the swing suspension hook in pushing mechanism
Under around the first bearing pin positive and negative rotation, switch between open and closed positions, and one is remained at by pushing mechanism
Individual position.
Because spreader body has two kinds of operating modes, the first is by suspender steel coil lifting；Second is together with material frame one
Play handling；Without using swing suspension hook during steel coil lifting, therefore to allow swing suspension hook to be maintained at open position, avoid interference with；Together with
Material frame together handling when, need to be maintained in its closed position swing suspension hook and sling material frame, by pushing mechanism drive swing suspension hook,
Realize being actually needed according to production, it is determined whether the locking carried out between suspender and material frame connects, easy to maintenance；And not
During using swinging suspension hook, open position is kept it in, is avoided interference with, improves the security reliability of equipment.
Further, the swing suspension hook middle and upper part is arranged on spreader body framework by first bearing pin, and swing is hung
Hook upper end is rotatablely connected by the second bearing pin and pushing mechanism, and the pushing mechanism first end is rotatably installed in by the 3rd bearing pin
On spreader body framework.
Further, it is additionally provided between the spreader body framework and swing suspension hook for making swing suspension hook be maintained at opening
The maintaining body of position.Tensed by maintaining body and swing suspension hook, that is, realize the locking connection between suspender and material frame, simultaneously
Avoid pushing mechanism such as hydraulic cylinder or cylinder oil pressure it is insufficient when, swing suspension hook under gravity, it is automatic to slide lock
Tight material frame, cause when suspender discharging, indivedual suspension hooks tangle material frame, cause to tumble, cause the accident, and improve the peace of equipment
Full reliability.
Further, the maintaining body is extension spring, and extension spring one end is connected with spreader body framework, the other end with
Suspension hook is swung to be connected.
Further, described extension spring one end is connected with spreader body framework by the 4th bearing pin, and the other end is hung with swing
In the middle part of hook or bottom is connected by the 5th bearing pin.
Further, the maintaining body and pushing mechanism are positioned at the same side or not homonymy for swinging suspension hook.
Further, the epimere for swinging suspension hook in vertical direction when being included in open position and it is intilted under
Section, when swing suspension hook is rocked to closed position, the hypomere for swinging suspension hook is swung out to vertical position.
Further, it is provided with the spreader body framework corresponding to the opening for swinging hook-open position and closed position
Position detection switch and close stance detection switch.Swing whether suspension hook runs in place for real-time judge, control is provided for control system
Information processed.
Further, the open position detection switch is close to suspension hook top is swung, and the close stance detection switch is close to swing
Suspension hook bottom.
Further, the pushing mechanism is hydraulic cylinder, cylinder or electric pushrod.
As described above, the beneficial effects of the invention are as follows：The device drives by using pushing mechanism and swings suspension hook, realizes root
According to being actually needed for production, it is determined whether the locking carried out between suspender and material frame connects, easy to maintenance；It is being equipped with swing simultaneously
Suspension hook is provided with standby tight extension spring, tenses and swings suspension hook, had both realized the locking connection between suspender and material frame, and had avoided simultaneously
Hydraulic cylinder or cylinder oil pressure it is insufficient when, swing suspension hook under gravity, it is automatic to slide locking material frame, cause to hang
When having discharging, indivedual suspension hooks tangle material frame, cause to tumble, cause the accident, and improve the security reliability of equipment.
Brief description of the drawings
Fig. 1 is that the smart three-dimensional storehouse hanger locking apparatus of the present invention is applied to the schematic diagram of suspender；
Fig. 2 is that the schematic diagram that suspension hook is connected with material frame is swung in the present invention；
Fig. 3 is the smart three-dimensional storehouse hanger locking apparatus schematic diagram of the present invention.
Piece mark explanation
In figure：1- assembly pulleys；2- open position detection switch；3- guiders；4- frameworks；5- clamps；6- close stances detect
Switch；7- locking devices；8- fixed pin shafts；9- material frames；
71- swings suspension hook；72- pushing mechanisms；The bearing pins of 73- first；The bearing pins of 74- second；The bearing pins of 75- the 3rd；76- stretches bullet
Spring；The bearing pins of 77- the 4th；The bearing pins of 78- the 5th.
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
Embodiment
As shown in Figure 1 to Figure 3, a kind of intelligent three-dimensional warehouse hanger locking apparatus, it is arranged on spreader body framework, is used for
Locking under various operating modes.In this example by taking coil of strip stereo type warehouse as an example, wherein spreader body includes assembly pulley 1, guider
3rd, framework 4；The structures such as clamp 5, the spreader body belong to prior art, repeated no more.
The locking device 7 includes swinging suspension hook 71, pushing mechanism 72, the first bearing pin 73, the second bearing pin 74 and the 3rd pin
Axle 75, it is the hook portion for slinging material frame 9 to swing the lower end of suspension hook 71.First bearing pin 73 is arranged on spreader body framework 4, is used for
Support is provided to swing suspension hook 71, the middle and upper part of suspension hook 71 is swung and is rotatably installed in by the first bearing pin 73 on spreader body framework 4,
And swing suspension hook 71 can surround the positive and negative rotation of the first bearing pin 73.It is hydraulic cylinder in this example, gas can be used in other embodiment
Cylinder or electric pushrod.
The first end of pushing mechanism 72 is installed in rotation on spreader body framework 4 by the 3rd bearing pin 75, is promoted
Second end of mechanism 72 is rotatablely connected with swinging suspension hook 71 by the second bearing pin 74, and the swing suspension hook 71 can be in pushing mechanism
Around the positive and negative rotation of the first bearing pin 73 under 72 effects, so as to switch between open and closed positions, and pass through pushing mechanism
72 remain at a position.The fixed pin shaft 8 coordinated during for lifting by crane with swinging suspension hook 71 is provided with material frame 9, being passed through
Connection between suspender and material frame 9 is realized using the fixed pin shaft 8 swung in the locking material frame 9 of suspension hook 71, it is simple in construction, it is easy to tie up
Shield.
Wherein open position refers to, swing suspension hook 71 backward it is (inside) gathering when curling position；Closed position refers to put
The operating position of dynamic suspension hook 71, that is, swing suspension hook 71 and swung out by curling position to operating position.It is open position shown in Fig. 1
Put.
Because spreader body has two kinds of operating modes, the first is by suspender steel coil lifting；Second is together with material frame 9 one
Play handling；Without using swing suspension hook 71 during steel coil lifting, therefore to allow swing suspension hook 71 to be maintained at open position, avoid interference with；
During together with 9 handling of material frame, it need to be maintained in its closed position swing suspension hook 71 and sling material frame 9；Suspension hook 71 is swung by pushing away
The drive ring of motivation structure 72 rotates around the first bearing pin 73 being installed on spreader body framework 4, can be according to the reality of production task
It is necessary to determine whether to start locking device.It is easy to maintenance；And when without using suspension hook 71 is swung, keep it in open position
Put, avoid interference with, improve the security reliability of equipment.
Beaten preferably, being additionally provided between spreader body framework and swing suspension hook 71 for being maintained at swing suspension hook 71
The maintaining body of open position (curling position).
Wherein, maintaining body is extension spring 76, and the one end of extension spring 76 passes through the 4th bearing pin 77 with spreader body framework 4
Connection, the other end are connected with swinging the middle part of suspension hook 71 or bottom by the 5th bearing pin 78.By extension spring 76, pendulum is awarded all the time
Dynamic suspension hook 71 backward standby strains at power, avoids hydraulic cylinder pressure relief from causing to swing suspension hook 71 to fall under gravity and tangle material frame 9,
Cause security incident.
Wherein the 4th bearing pin 77 is arranged on spreader body framework 4, for connecting extension spring 76, is carried to swing suspension hook 71
Incense clamp force.5th bearing pin 78, which is arranged on, to be swung on suspension hook 71, for connecting extension spring 76, is provided to swing suspension hook 71 for tight
Power.Pushing mechanism 72 is used for the needs according to production, overcomes the standby clamp force of extension spring 76, and driving swings suspension hook 71 along first
The positive and negative rotation of bearing pin 73.
Maintaining body and pushing mechanism 72 homonymy positioned at the same side for swinging suspension hook 71 or not, for ease of arrangement in this example
With it is compact-sized, by extension spring 76 and pushing mechanism 72 be arranged on swing suspension hook 71 the same side, swing suspension hook 71 inwardly put
It is dynamic to open, closing is swung out, extension spring 76 and pushing mechanism 72 are arranged on the inner side for swinging suspension hook 71.
Preferably, it is provided with spreader body framework corresponding to the opening for swinging the open position of suspension hook 71 and closed position
Position detection switch 2 and close stance detection switch 6.Swing whether suspension hook 71 runs in place for real-time judge, carried for control system
For control information.
Wherein, the epimere for swinging suspension hook 71 in vertical direction when being included in open position and it is intilted under
Section, when swing suspension hook 71 is rocked to closed position, the hypomere for swinging suspension hook 71 is swung out to vertical position.
Open position detection switch 2 is close to the top of suspension hook 71 is swung, and close stance detection switch 6 is close to swing suspension hook 71 bottom.
The operation principle of the present invention is as follows：
When needing together with 9 handling of material frame, suspender is begun to decline after running to directly over material frame 9, when passing through
After absolute value encoder control suspender on sling lifting elevator declines in place, hydraulic cylinder starts to retract, and driving swing is hung
Hook 71 is outwards rotated, and extension spring 76 is elongated, and is awarded and is swung the rearward pulling force of suspension hook 71, when on spreader body framework 4
After all close stance detection switch 6 sense signal, show swing suspension hook 71 be rotated in place, suspender starts to be lifted, and with material frame 9
On fixed pin shaft connection, drive the Integral lifting of material frame 9 to specified location.Suspender begins through absolute value encoder control
After declining in place, hydraulic cylinder stretches out, and drives swing suspension hook 71 to reset, extension spring 76 resets, while is always maintained at awarding swing
The certain rearward pulling force of suspension hook 71, after all open position detection switch 2 on spreader body framework sense signal, table
Obvious dynamic suspension hook 71 is rotated in place, and suspender can be lifted off.
When only steel coil lifting, after suspender is run to directly over material frame 9, begin to decline, when by located at suspender
After lifting the absolute value encoder control suspender decline in place on elevator, locking device remains stationary as, located at spreader body framework
On all open position detection switch 2 sense signal；Then clamp clamp coil of strip, suspender lifting and by steel coil handling to finger
Positioning is put.
As described above, the beneficial effects of the invention are as follows：The device drives by using pushing mechanism 72 swings suspension hook 71, real
Now being actually needed according to production, it is determined whether the locking carried out between suspender and material frame 9 connects, easy to maintenance；Simultaneously with
The standby suspension hook 71 that swings is provided with standby tight extension spring 76, tenses and swings suspension hook 71, had both realized the locking between suspender and material frame 9
Connection, while avoid when hydraulic cylinder oil pressure deficiency, swinging suspension hook 71, automatic slide locks material frame under gravity
9, cause when suspender discharging, indivedual suspension hooks tangle material frame 9, cause to tumble, cause the accident, and the safety for improving equipment can
By property.
Any person skilled in the art can all be carried out under the spirit and scope without prejudice to the present invention to above-described embodiment
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from disclosed spirit with
All equivalent modifications completed under technological thought or change, it should be covered by the claim of the present invention.
Claims (10)
1. a kind of intelligent three-dimensional warehouse hanger locking apparatus, is arranged on spreader body framework, it is characterised in that：Hung including swinging
Hook and pushing mechanism, the swing suspension hook are arranged on spreader body framework by the first bearing pin, the pushing mechanism first end
It is installed in rotation on spreader body framework, the second end can promote with swinging suspension hook rotation connection, the swing suspension hook
Around the first bearing pin positive and negative rotation under mechanism effect, switch between open and closed positions, and kept by pushing mechanism
A position wherein.
2. intelligent three-dimensional warehouse according to claim 1 hanger locking apparatus, it is characterised in that：On in the swing suspension hook
Portion is arranged on spreader body framework by first bearing pin, is swung suspension hook upper end and is rotated by the second bearing pin and pushing mechanism
Connection, the pushing mechanism first end are rotatably installed on spreader body framework by the 3rd bearing pin.
3. intelligent three-dimensional warehouse according to claim 1 hanger locking apparatus, it is characterised in that：The spreader body framework
The maintaining body for making swing suspension hook be maintained at open position is additionally provided between swing suspension hook.
4. intelligent three-dimensional warehouse according to claim 3 hanger locking apparatus, it is characterised in that：The maintaining body is drawing
Spring is stretched, extension spring one end is connected with spreader body framework, and the other end is connected with swinging suspension hook.
5. intelligent three-dimensional warehouse according to claim 4 hanger locking apparatus, it is characterised in that：Described extension spring one end
It is connected with spreader body framework by the 4th bearing pin, the other end is connected with swinging suspension hook middle part or bottom by the 5th bearing pin.
6. intelligent three-dimensional warehouse according to claim 3 hanger locking apparatus, it is characterised in that：The maintaining body and push away
Motivation structure homonymy positioned at the same side for swinging suspension hook or not.
7. the intelligent three-dimensional warehouse hanger locking apparatus according to claim 1-6 any one, it is characterised in that：The pendulum
Epimere in vertical direction and intilted hypomere when dynamic suspension hook is included in open position, closing is rocked to when swinging suspension hook
During position, the hypomere for swinging suspension hook is swung out to vertical position.
8. intelligent three-dimensional warehouse according to claim 1 hanger locking apparatus, it is characterised in that：The spreader body framework
On be provided with corresponding to the open position detection switch and close stance detection switch for swinging hook-open position and closed position.
9. intelligent three-dimensional warehouse according to claim 8 hanger locking apparatus, it is characterised in that：The open position detection is opened
Close close to suspension hook bottom is swung, the close stance detection switch is close to swing suspension hook top.
10. intelligent three-dimensional warehouse according to claim 8 hanger locking apparatus, it is characterised in that：The pushing mechanism is
Hydraulic cylinder, cylinder or electric pushrod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711087025.XA CN107720538B (en) | 2017-11-07 | 2017-11-07 | Intelligent stereoscopic warehouse lifting appliance locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711087025.XA CN107720538B (en) | 2017-11-07 | 2017-11-07 | Intelligent stereoscopic warehouse lifting appliance locking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107720538A true CN107720538A (en) | 2018-02-23 |
| CN107720538B CN107720538B (en) | 2023-11-28 |
Family
ID=61222867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711087025.XA Active CN107720538B (en) | 2017-11-07 | 2017-11-07 | Intelligent stereoscopic warehouse lifting appliance locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107720538B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484966A (en) * | 2019-01-04 | 2019-03-19 | 袁雪峰 | A kind of tubular pole suspender |
| CN114275476A (en) * | 2021-12-24 | 2022-04-05 | 河南黎明重工科技股份有限公司 | Separated bulk material air rail transport rail car |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741284A (en) * | 1993-07-27 | 1995-02-10 | Dainippon Printing Co Ltd | Rolling device for roll |
| JP2000169077A (en) * | 1998-12-08 | 2000-06-20 | Mitsubishi Heavy Ind Ltd | Boxy object positioning device |
| KR20040033864A (en) * | 2002-10-16 | 2004-04-28 | 주식회사 포스코 | An apparatus for automatically connecting coil lifter with a hook of crane |
| CN203715056U (en) * | 2013-12-21 | 2014-07-16 | 东风柳州汽车有限公司 | Automatic switching sling for car body |
| CN105819329A (en) * | 2016-05-26 | 2016-08-03 | 中冶赛迪工程技术股份有限公司 | Intelligent steel coil clamp |
-
2017
- 2017-11-07 CN CN201711087025.XA patent/CN107720538B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0741284A (en) * | 1993-07-27 | 1995-02-10 | Dainippon Printing Co Ltd | Rolling device for roll |
| JP2000169077A (en) * | 1998-12-08 | 2000-06-20 | Mitsubishi Heavy Ind Ltd | Boxy object positioning device |
| KR20040033864A (en) * | 2002-10-16 | 2004-04-28 | 주식회사 포스코 | An apparatus for automatically connecting coil lifter with a hook of crane |
| CN203715056U (en) * | 2013-12-21 | 2014-07-16 | 东风柳州汽车有限公司 | Automatic switching sling for car body |
| CN105819329A (en) * | 2016-05-26 | 2016-08-03 | 中冶赛迪工程技术股份有限公司 | Intelligent steel coil clamp |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109484966A (en) * | 2019-01-04 | 2019-03-19 | 袁雪峰 | A kind of tubular pole suspender |
| CN109484966B (en) * | 2019-01-04 | 2023-09-12 | 袁雪峰 | Tubular pile lifting appliance |
| CN114275476A (en) * | 2021-12-24 | 2022-04-05 | 河南黎明重工科技股份有限公司 | Separated bulk material air rail transport rail car |
| CN114275476B (en) * | 2021-12-24 | 2023-10-24 | 河南黎明重工科技股份有限公司 | Separated bulk material empty rail transport rail car |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107720538B (en) | 2023-11-28 |
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