CN106216408A - A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof - Google Patents

A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof Download PDF

Info

Publication number
CN106216408A
CN106216408A CN201610861485.2A CN201610861485A CN106216408A CN 106216408 A CN106216408 A CN 106216408A CN 201610861485 A CN201610861485 A CN 201610861485A CN 106216408 A CN106216408 A CN 106216408A
Authority
CN
China
Prior art keywords
crossbeam
agc cylinder
wide
heavy plate
changing
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.)
Pending
Application number
CN201610861485.2A
Other languages
Chinese (zh)
Inventor
黄建军
刘洪斌
唐拥兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MCC5 Group Shanghai Corp Ltd
Original Assignee
MCC5 Group Shanghai Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MCC5 Group Shanghai Corp Ltd filed Critical MCC5 Group Shanghai Corp Ltd
Priority to CN201610861485.2A priority Critical patent/CN106216408A/en
Publication of CN106216408A publication Critical patent/CN106216408A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B31/00Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)

Abstract

A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder, including crossbeam support unit and two electric blocks, it is characterised in that: described crossbeam support unit includes that crossbeam, gripper shoe, gusset, base, crossbeam (1) they are length >=2060mm long strip type girder steel;The both sides of crossbeam are welded admittedly with gripper shoe (2) top, by gripper shoe vertical support crossbeam;Crossbeam and gripper shoe junction are provided with 60mm triangle reinforcement (3) and strengthen;Said two electric block (8) is arranged on crossbeam by being suspended on chain hook (7) of crossbeam both sides, and steel wire rope used for electric hoist (9) is connected with shoulder pole girder (10).The apparatus structure that the present invention has for changing wide and heavy plate mill hydraulic AGC cylinder is simple, easy to make, changes wide and heavy plate mill hydraulic AGC cylinder work progress safe and reliable, improves efficiency of construction and the advantage reducing construction cost.

Description

A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof
Technical field
The present invention relates to a kind of wide and heavy plate mill hydraulic AGC cylinder, specifically, be a kind of for changing wide and heavy plate mill liquid The device of pressure AGC cylinder and using method thereof.
Background technology
Wide and heavy plate mill hydraulic AGC cylinder plays the important function ensureing thickness of slab tolerance.AGC cylinder the most still uses tradition Push-up, owing to Push-up cylinder body is positioned at milling train base cross members, working environment is quite severe, stands for a long time in production process The sewage produced and the flushing of sump oil, during cylinder body upwardly roll keeps roll line stable, due to roll weight Amount is relatively big, makes the natural frequency of AGC cylinder, i.e. response frequency increased on the basis of own frequency, the synthesis of these factors Greatly reduce the service life of cylinder body, the deviation that cylinder body produces, directly affects the quality of sheet material.Wide and heavy plate mill hydraulic pressure AGC cylinder gross weight there are about more than 30 tons altogether, and position special replacing difficulty is very big.The side changing rolling mill AGC cylinder now used at present Method step is many, with duration, takies manpower, equipment (driving) many.
Therefore the known mode changing rolling mill AGC cylinder also exists above-mentioned all inconvenience and problem.
Summary of the invention
The purpose of the present invention, is to propose a kind of safe and reliable device for changing wide and heavy plate mill hydraulic AGC cylinder.
The purpose of the present invention, is to propose a kind of safe and reliable device for changing wide and heavy plate mill hydraulic AGC cylinder Using method.
For achieving the above object, the technical solution of the present invention is:
A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder, wide and heavy plate mill hydraulic AGC cylinder is arranged on two mill housings In the melt pit of bottom, two mill housings are L-shaped, and positioned opposite, and wide and heavy plate mill hydraulic AGC cylinder is in L-type mill housing Centre position, includes crossbeam support unit and two electric blocks for changing the device of wide and heavy plate mill hydraulic AGC cylinder, and it is special Levy and be:
Described crossbeam support unit includes crossbeam, gripper shoe, gusset, base, and crossbeam is length >=2060mm long strip type girder steel;Greatly The both sides of beam are welded admittedly with gripper shoe top, by gripper shoe vertical support crossbeam;Crossbeam and gripper shoe junction are provided with 60mm triangle Shape reinforcement is strengthened;Consolidating gusset with thick 70mm bottom gripper shoe admittedly to weld, firm gusset bottom is welded admittedly with thick 90mm connecting plate;Even The down either side of fishplate bar top with splayed base respectively is welded admittedly, forms firm hoisting bracket;
Said two electric block is arranged on crossbeam by being suspended on the chain hook of crossbeam both sides, is used for hanging electric block Position is polished into circular arc;Steel wire rope used for electric hoist is connected with shoulder pole girder, if shoulder pole girder is provided with bolt stem, bolt can be with For the bolt hole coupling connected on AGC cylinder body.
The device being used for changing wide and heavy plate mill hydraulic AGC cylinder of the present invention can also use following technical measures to enter One step realizes.
Being previously described for changing the device of wide and heavy plate mill hydraulic AGC cylinder, wherein said crossbeam uses thick 120mm steel plate to cut Cut and make.
It is previously described for changing the device of wide and heavy plate mill hydraulic AGC cylinder, the long 1600mm of wherein said gripper shoe, thickness 60mm。
It is previously described for changing the device of wide and heavy plate mill hydraulic AGC cylinder, wherein said electric block lifting capacity >=20t.
A kind of device using method for changing wide and heavy plate mill hydraulic AGC cylinder, it is characterised in that comprise the following steps:
A, change wide and heavy plate mill hydraulic AGC cylinder with 50t driving and movable hydraulic pressure unit in wide and heavy plate mill workshop by being used for Device is put on work roll changing guide rail, will be used for changing the device of wide and heavy plate mill hydraulic AGC cylinder with workroll change Push mill stand, it is ensured that for change the base of the device of wide and heavy plate mill hydraulic AGC cylinder correctly with the L-type milling train of both sides Memorial archway contacts, and after the device stable in placement for changing wide and heavy plate mill hydraulic AGC cylinder, operative employee opens melt pit cover plate, Then utilize conveying roller changing rig by shoulder pole girder and the high-strength bolt having 4 M42 being used for being connected on AGC cylinder body by cylinder body and Shoulder pole girder connects fixing;
B, respectively dismounting AGC cylinder protective cover and stepped plate;
C, with the jack of two 100t by AGC cylinder bottom seat top pine, then equipment connector is connected with the spiral shell of AGC cylinder It is fixing that keyhole makes AGC cylinder connect, then by slinging AGC cylinder together with sensor board with 2 20t electric blocks;
D, AGC cylinder is winched to certain altitude the base cross members of equipment connector recess and special hanger is stopped after cooperating Lifting;
E, roll change buggy is pushed AGC cylinder bottom portion after, cylinder body is placed on dolly, due to special hanger and equipment connector phase Button, while being pulled out by cylinder body, special hanger removes simultaneously, winches to specific bit with driving and put after being transported to void spaces.
The device using method being used for changing wide and heavy plate mill hydraulic AGC cylinder of the present invention can also use following technology Measure realizes further.
Aforesaid method, wherein said sensor board is connected with steel wire rope, and is arranged on the top of shoulder pole girder.
After using technique scheme, the device and method tool for changing wide and heavy plate mill hydraulic AGC cylinder of the present invention Have the advantage that
1, simple, easy to make for changing the apparatus structure of wide and heavy plate mill hydraulic AGC cylinder;
2, change wide and heavy plate mill hydraulic AGC cylinder work progress safe and reliable, utilize hanging apparatus by AGC cylinder from melt pit steadily Hang out to position of platform, improve efficiency of construction;
3, shorten replacing construction, reduce manpower, equipment investment, be beneficial to carry out other overhauling projects simultaneously, increase work efficiency, fall Low construction risk, saves the repair time, thus reduces construction cost.
Accompanying drawing explanation
Fig. 1 is the crossbeam support unit structural representation of the embodiment of the present invention;
Fig. 2 is the side view of Fig. 1;
Fig. 3 is the apparatus structure schematic diagram for changing wide and heavy plate mill hydraulic AGC cylinder of the embodiment of the present invention;
Fig. 4 is the device use view for changing wide and heavy plate mill hydraulic AGC cylinder of the embodiment of the present invention.
In figure: 1 crossbeam, 2 gripper shoes, 3 reinforcements, 4 consolidate gusset, 5 connecting plates, 6 bases, 7 chain hooks, 8 electronic calabashes Reed, 9 steel wire ropes, 10 shoulder pole girders, 11 bolts, 12 sensor boards, 13L type mill housing, 14 hydraulic AGC cylinders, 15 melt pits.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is illustrated further.
Embodiment 1
The device for changing wide and heavy plate mill hydraulic AGC cylinder of the present invention, wide and heavy plate mill hydraulic AGC cylinder is arranged on two milling trains In the melt pit of memorial archway bottom, two mill housings are L-shaped, and positioned opposite, and wide and heavy plate mill hydraulic AGC cylinder is in L-type milling train board The centre position in mill, includes crossbeam support unit and two electric blocks for changing the device of wide and heavy plate mill hydraulic AGC cylinder.
Referring now to the crossbeam support unit structural representation that Fig. 1 and Fig. 2, Fig. 1 are the embodiment of the present invention, Fig. 2 is Fig. 1's Side view.As it can be seen, described crossbeam support unit includes that crossbeam, gripper shoe, gusset, base, crossbeam 1 are long 2060mm strip Section steel beam;The both sides of crossbeam are welded admittedly with gripper shoe 2 top, by gripper shoe vertical support crossbeam;Crossbeam sets with gripper shoe junction 60mm triangle reinforcement 3 is had to strengthen;Consolidate the solid weldering of gusset 4, firm gusset bottom and thick 90mm with thick 70mm bottom gripper shoe 2 The solid weldering of connecting plate 5;The down either side of connecting plate 5 top with splayed base 6 respectively is welded admittedly, forms firm hoisting bracket; Described crossbeam uses thick 120mm steel plate to be cut into.The long 1600mm of described gripper shoe, thick 60mm.
Fig. 3 is the apparatus structure schematic diagram for changing wide and heavy plate mill hydraulic AGC cylinder of the embodiment of the present invention.Described two Individual electric block 8 is arranged on crossbeam by being suspended on the chain hook 7 of crossbeam both sides, is used for hanging the polishing of electric block position In the arc-shaped;Steel wire rope 9 used for electric hoist is connected with shoulder pole girder 10, and shoulder pole girder is provided with four bolts 11, and bolt can be with AGC cylinder For the bolt hole coupling connected on body.Described electric block lifting capacity is 20t.
Embodiment 2
The device using method for changing wide and heavy plate mill hydraulic AGC cylinder of the present invention, comprises the following steps:
A, change wide and heavy plate mill hydraulic AGC cylinder with 50t driving and movable hydraulic pressure unit in wide and heavy plate mill workshop by being used for Device is put on work roll changing guide rail, will be used for changing the device of wide and heavy plate mill hydraulic AGC cylinder with workroll change Push mill stand, it is ensured that roll for changing the base 6 correctly L-type with both sides of the device of wide and heavy plate mill hydraulic AGC cylinder Machine memorial archway contacts, and after the device stable in placement for changing wide and heavy plate mill hydraulic AGC cylinder, operative employee opens melt pit lid Plate, then utilizes conveying roller changing rig to be incited somebody to action with the high-strength bolt having 4 M42 being used for being connected on AGC cylinder body by shoulder pole girder 10 Cylinder body and shoulder pole girder connect fixing;
B, respectively dismounting AGC cylinder protective cover and stepped plate;
C, with the jack of two 100t by AGC cylinder bottom seat top pine, then equipment connector bolt 11 is connected AGC cylinder It is fixing that bolt hole makes AGC cylinder connect, then by slinging AGC cylinder together with sensor board 12 with 2 20t electric blocks;
D, AGC cylinder is winched to certain altitude the base cross members of equipment connector recess and special hanger is stopped after cooperating Lifting;
E, roll change buggy is pushed AGC cylinder bottom portion after, cylinder body is placed on dolly, due to special hanger and equipment connector phase Button, while being pulled out by cylinder body, special hanger removes simultaneously, winches to specific bit with driving and put after being transported to void spaces.Described biography Sensor plate 12 is connected with steel wire rope 9, and is arranged on the top of shoulder pole girder 10.
The present invention has substantive distinguishing features and significant technological progress, and being used for of the present invention changes wide and heavy plate mill hydraulic pressure The device of AGC cylinder and using method thereof, utilize hanging apparatus to hang out AGC cylinder to position of platform from melt pit, improves construction effect Rate, reduces construction risk, saves the repair time, reduces personnel and puts into and equipment investment, thus reduce construction cost, improves simultaneously Production efficiency of equipment.
Above example is used for illustrative purposes only, rather than limitation of the present invention, about the technology people of technical field Member, without departing from the spirit and scope of the present invention, it is also possible to make various conversion or change.Therefore, all equivalents Technical scheme also should belong to scope of the invention, should be limited by each claim.

Claims (6)

1., for changing a device for wide and heavy plate mill hydraulic AGC cylinder, wide and heavy plate mill hydraulic AGC cylinder is arranged on two milling train boards In the melt pit of bottom, mill, two mill housings are L-shaped, and positioned opposite, and wide and heavy plate mill hydraulic AGC cylinder is in L-type mill housing Centre position, include crossbeam support unit and two electric blocks for the device changing wide and heavy plate mill hydraulic AGC cylinder, its It is characterised by:
Described crossbeam support unit includes that crossbeam, gripper shoe, gusset, base, crossbeam (1) are length >=2060mm strip shaped steel Beam;The both sides of crossbeam are welded admittedly with gripper shoe (2) top, by gripper shoe vertical support crossbeam;Crossbeam is provided with gripper shoe junction 60mm triangle reinforcement (3) strengthens;Gripper shoe (2) bottom and thick 70mm consolidate the solid weldering of gusset (4), and firm gusset bottom is with thick The solid weldering of 90mm connecting plate (5);The down either side of connecting plate (5) top with splayed base (6) respectively is welded admittedly, is formed firm Hoisting bracket;
Said two electric block (8) is arranged on crossbeam by being suspended on chain hook (7) of crossbeam both sides, is used for hanging electricity Dynamic calabash position is polished into circular arc;Steel wire rope used for electric hoist (9) is connected with shoulder pole girder (10), and shoulder pole girder is provided with some spiral shells Bolt (11), bolt can mate for the bolt hole being connected with on AGC cylinder body.
2. the device for changing wide and heavy plate mill hydraulic AGC cylinder as claimed in claim 1, it is characterised in that described crossbeam Thick 120mm steel plate is used to be cut into.
3. the device for changing wide and heavy plate mill hydraulic AGC cylinder as claimed in claim 1, it is characterised in that described support The long 1600mm of plate, thick 60mm.
4. the device for changing wide and heavy plate mill hydraulic AGC cylinder as claimed in claim 1, it is characterised in that described electronic Hoist amount >=20t.
5. the device using method for changing wide and heavy plate mill hydraulic AGC cylinder as claimed in claim 1, its feature exists In comprising the following steps:
A, change wide and heavy plate mill hydraulic AGC cylinder with 50t driving and movable hydraulic pressure unit in wide and heavy plate mill workshop by being used for Device is put on work roll changing guide rail, will be used for changing the device of wide and heavy plate mill hydraulic AGC cylinder with workroll change Push mill stand, it is ensured that for change the base (6) of the device of wide and heavy plate mill hydraulic AGC cylinder correctly with the L-type of both sides Mill housing contacts, and after the device stable in placement for changing wide and heavy plate mill hydraulic AGC cylinder, operative employee opens melt pit lid Plate, then utilizes conveying roller changing rig by shoulder pole girder (10) and the high-strength bolt having 4 M42 for being connected on AGC cylinder body Cylinder body and shoulder pole girder are connected fixing;
B, respectively dismounting AGC cylinder protective cover and stepped plate;
C, with the jack of two 100t by AGC cylinder bottom seat top pine, then by equipment connector with bolt (11) connect AGC cylinder Bolt hole to make AGC cylinder connect fixing, then by slinging AGC cylinder together with sensor board (12) with 2 20t electric blocks;
D, AGC cylinder is winched to certain altitude the base cross members of equipment connector recess and special hanger is stopped after cooperating Lifting;
E, roll change buggy is pushed AGC cylinder bottom portion after, cylinder body is placed on dolly, due to special hanger and equipment connector phase Button, while being pulled out by cylinder body, special hanger removes simultaneously, winches to specific bit with driving and put after being transported to void spaces.
6. the device using method for changing wide and heavy plate mill hydraulic AGC cylinder as claimed in claim 5, it is characterised in that Described sensor board (12) is connected with steel wire rope (9), and is arranged on the top of shoulder pole girder (10).
CN201610861485.2A 2016-09-29 2016-09-29 A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof Pending CN106216408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610861485.2A CN106216408A (en) 2016-09-29 2016-09-29 A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610861485.2A CN106216408A (en) 2016-09-29 2016-09-29 A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof

Publications (1)

Publication Number Publication Date
CN106216408A true CN106216408A (en) 2016-12-14

Family

ID=58075957

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610861485.2A Pending CN106216408A (en) 2016-09-29 2016-09-29 A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof

Country Status (1)

Country Link
CN (1) CN106216408A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107282642A (en) * 2017-06-21 2017-10-24 江阴兴澄特种钢铁有限公司 Four-roller stove rolls up reversable mill automatic thickness control device Replacement procedure
CN107671124A (en) * 2017-09-12 2018-02-09 宁波宝新不锈钢有限公司 A kind of replacing options of large-scale AGC hydraulic cylinders
CN111015580A (en) * 2020-01-07 2020-04-17 山东建筑大学 Horizontal roller hydraulic cylinder replacing tool for section steel rolling mill and using method
CN111546298A (en) * 2020-04-26 2020-08-18 浙江龙盛薄板有限公司 Multifunctional AGC cylinder maintenance platform
CN113428779A (en) * 2021-05-24 2021-09-24 中国二十冶集团有限公司 Installation method for upper cylinder of rolling mill in limited space

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633668C5 (en) * 1996-08-21 2004-04-01 Voith Paper Patent Gmbh Process for changing a roller and roller changing tool
CN201164853Y (en) * 2007-11-22 2008-12-17 中国第一重型机械集团公司 Press type AGC cylinder fixing and changing apparatus
CN201692987U (en) * 2010-06-02 2011-01-05 鞍钢建设集团有限公司 Movable bracket for installing and replacing rolling mill screwdown device
CN202207709U (en) * 2011-08-11 2012-05-02 二重集团(德阳)重型装备股份有限公司 Special attachment for replacing rolling mill stepped shims and lower hydraulic AGC device
CN206104558U (en) * 2016-09-29 2017-04-19 五冶集团上海有限公司 A device for changing width heavy plate mill hydraulic pressure AGC jar

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19633668C5 (en) * 1996-08-21 2004-04-01 Voith Paper Patent Gmbh Process for changing a roller and roller changing tool
CN201164853Y (en) * 2007-11-22 2008-12-17 中国第一重型机械集团公司 Press type AGC cylinder fixing and changing apparatus
CN201692987U (en) * 2010-06-02 2011-01-05 鞍钢建设集团有限公司 Movable bracket for installing and replacing rolling mill screwdown device
CN202207709U (en) * 2011-08-11 2012-05-02 二重集团(德阳)重型装备股份有限公司 Special attachment for replacing rolling mill stepped shims and lower hydraulic AGC device
CN206104558U (en) * 2016-09-29 2017-04-19 五冶集团上海有限公司 A device for changing width heavy plate mill hydraulic pressure AGC jar

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107282642A (en) * 2017-06-21 2017-10-24 江阴兴澄特种钢铁有限公司 Four-roller stove rolls up reversable mill automatic thickness control device Replacement procedure
CN107671124A (en) * 2017-09-12 2018-02-09 宁波宝新不锈钢有限公司 A kind of replacing options of large-scale AGC hydraulic cylinders
CN111015580A (en) * 2020-01-07 2020-04-17 山东建筑大学 Horizontal roller hydraulic cylinder replacing tool for section steel rolling mill and using method
CN111015580B (en) * 2020-01-07 2022-02-01 山东建筑大学 Horizontal roller hydraulic cylinder replacing tool for section steel rolling mill and using method
CN111546298A (en) * 2020-04-26 2020-08-18 浙江龙盛薄板有限公司 Multifunctional AGC cylinder maintenance platform
CN111546298B (en) * 2020-04-26 2022-06-07 浙江龙盛薄板有限公司 Multifunctional AGC cylinder maintenance platform
CN113428779A (en) * 2021-05-24 2021-09-24 中国二十冶集团有限公司 Installation method for upper cylinder of rolling mill in limited space

Similar Documents

Publication Publication Date Title
CN106216408A (en) A kind of device for changing wide and heavy plate mill hydraulic AGC cylinder and using method thereof
CN106978784B (en) A kind of Long span highway suspension bridge Demolition Construction method
CN203526204U (en) Device for replacing rolling mill pressing head frame and pressing head
CN201791755U (en) Automatic tilter for aluminum coils
CN111717798A (en) Multi-machine cooperative hoisting system and process for box girder of over-built railway cutting highway bridge
CN106644714A (en) Heavy-load testing device
CN102335677A (en) Quick replacement device and replacement method for stand roller of heavy plate mill
CN204747073U (en) Conveyor is changed to slab band rolling mill AGC pneumatic cylinder
CN206104558U (en) A device for changing width heavy plate mill hydraulic pressure AGC jar
CN201793312U (en) Auxiliary device for overturning large articles with end flanges
CN207618912U (en) A kind of device for replacing overhead traveling crane towing cable pulley sheave
CN213288605U (en) Slab turns over base instrument
CN203330385U (en) Mould-opening hoisting and overturning device for sand-coated casting of steel mould
CN109052150A (en) Suspender and its application method for Fast Installation mill housing
CN103101842B (en) Deep well equipment installation and maintenance travelling crane
CN106744281A (en) A kind of Portable Automatic hot finished steel pipe suspender
CN106760617B (en) A kind of inspection platform translation construction method
CN217921003U (en) Device for improving hoisting efficiency of steel plate entering and exiting finished product warehouse
CN215154845U (en) Special vehicle for lifting ultra-long top beam into well
CN206033022U (en) Tower section of thick bamboo hoist
CN206256382U (en) It is a kind of to suspend purlin car in midair for the triangle that Wavelike steel webplate is installed
CN218201818U (en) Two girder construction bale handle hoist
CN204778378U (en) Fixed hoist and mount portal frame
CN214690098U (en) Sunken ship salvage roller frame
CN219489348U (en) Large-scale concrete precast column hoist and mount axle dismantles and equips

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20161214