CN111816336A - Lifting appliance and lifting method for reactor moving assembly - Google Patents
Lifting appliance and lifting method for reactor moving assembly Download PDFInfo
- Publication number
- CN111816336A CN111816336A CN202010673237.1A CN202010673237A CN111816336A CN 111816336 A CN111816336 A CN 111816336A CN 202010673237 A CN202010673237 A CN 202010673237A CN 111816336 A CN111816336 A CN 111816336A
- Authority
- CN
- China
- Prior art keywords
- moving assembly
- holding claw
- cylindrical holding
- lifting
- reactor
- 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
Links
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/02—Details of handling arrangements
- G21C19/10—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements
- G21C19/105—Lifting devices or pulling devices adapted for co-operation with fuel elements or with control elements with grasping or spreading coupling elements
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
- G21C19/20—Arrangements for introducing objects into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel
- G21C19/207—Assembling, maintenance or repair of reactor components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The invention belongs to the technical field of nuclear power station reactor maintenance, and particularly relates to a reactor moving assembly lifting appliance and a lifting method, wherein the lifting appliance comprises a cylindrical holding claw, a supporting flange, an annular boss, a supporting block, a lifting pin, a nut, a rib plate, a bearing shaft and a cap; the hoisting pin is fixedly connected with the ribbed plate through a nut, the bearing shaft penetrates through a through hole in the top of the cap and a through hole in the center of the ribbed plate and is fixedly connected with the ribbed plate, and the cap is fixedly connected with the cylindrical holding claw; the cylindrical holding claw is connected with the supporting flange through the supporting block, and an annular boss is arranged on the inner surface of the middle of the cylindrical holding claw. The invention solves the problems and hidden dangers existing in the use process of the existing lifting appliance, improves the connection convenience and reliability of the lifting appliance of the movable assembly, and avoids industrial safety and human error events in the operation process.
Description
Technical Field
The invention belongs to the technical field of nuclear power station reactor maintenance, and particularly relates to a reactor moving assembly lifting appliance and a lifting method.
Background
When the reactor unit is disassembled and overhauled, all moving components need to be unsealed, disassembled, inspected, maintained, in-service inspected, repacked, sealed and the like. The mobile assembly dismounting or reloading work needs to hoist the mobile assembly from the upper assembly stored in the upper assembly inspection well to a professional mobile assembly storage lattice in the in-pile component inspection well by using a mobile assembly lifting appliance or hoist the mobile assembly from the storage lattice back to the upper assembly. The inspection and maintenance of the movable assembly and the in-service inspection work need to use a movable assembly lifting tool to lift the movable assembly, and the movable assembly is integrally inspected on a sealing surface, a welding line, the appearance, the key size, the flexibility of a rotating part and the like of the movable assembly from top to bottom in a special overhauling hole. The maintenance work related to the moving assembly needs to use the moving assembly lifting appliance, and the using frequency of the lifting appliance is extremely high. The lifting elevation drop of the moving assembly is large, the rotating coverage range of the crane is large, and the crane moves up and down frequently, so that large-amplitude swinging can be inevitable in the lifting process. The frequent hoisting operation has higher requirements on the convenience, the connection reliability and the durability of the installation of the movable assembly lifting appliance. The working principle of the prior moving component lifting appliance is as follows: the locking nut is rotated anticlockwise by the handle to enable the locking nut to move upwards on the threaded pull rod until the 3 holding claws are opened outwards to a proper angle; placing the whole lifting appliance on the head of the moving assembly, and positioning the end cover of the lifting appliance on the head of the moving assembly, wherein the tail end of the holding claw of the lifting appliance is aligned with the lifting groove of the moving assembly; the locking nut is rotated clockwise by the handle to move downwards, the locking nut gradually locks the holding claws, and the tail ends of the holding claws hook the groove at the head of the moving assembly, so that the connection of the lifting appliance and the moving assembly is realized; the lifting lug and the crane lifting hook are connected by the lifting belt, and the moving component is lifted and transported.
The following problems or hidden troubles exist in the use process of the existing movable assembly lifting appliance: the mobile component storage shelf is designed with a plurality of storage cylinders for storing a plurality of mobile components. The interval between the adjacent storage cylinders is small, so when the movable assembly lifting appliance is connected (or detached) in the storage cylinders, the handle of the lifting appliance is blocked by the adjacent storage cylinders, and the connection (or detachment) of the lifting appliance is difficult; when the movable assembly lifting appliance is connected in the storage cylinder, the whole claw-holding part of the lifting appliance extends into the storage cylinder, whether the lifting appliance is reliably connected with the movable assembly cannot be confirmed by visual observation or other effective methods, and human errors are prone to occur; the existing lifting appliance holding claw with the movable assembly has a weak part, and the sectional area of the position is smaller. In the long-term use process of the site finding lifting appliance, the weak position can deform, the holding claw opens outwards at the position, and the potential safety hazard that the lifting appliance is connected with the moving assembly is unreliable exists.
Therefore, the reactor moving assembly lifting appliance and the lifting method are needed to be provided, so that the problems and potential safety hazards of the existing moving assembly lifting appliance are solved, and the connection convenience and reliability of the moving assembly lifting appliance are improved.
Disclosure of Invention
The invention aims to provide a reactor moving component lifting appliance and a lifting method aiming at the defects of the prior art, solves the problems and hidden dangers existing in the using process of the existing lifting appliance, improves the connection convenience and reliability of the moving component lifting appliance, and avoids industrial safety and human error events in the operation process.
The technical scheme of the invention is as follows:
a lifting appliance for a reactor moving assembly comprises a cylindrical holding claw, a supporting flange, an annular boss, a supporting block, a lifting pin, a nut, a rib plate, a bearing shaft and a cover cap; the hoisting pin is fixedly connected with the ribbed plate through a nut, the bearing shaft penetrates through a through hole in the top of the cap and a through hole in the center of the ribbed plate and is fixedly connected with the ribbed plate, and the cap is fixedly connected with the cylindrical holding claw; the cylindrical holding claw is connected with the supporting flange through the supporting block, and an annular boss is arranged on the inner surface of the middle of the cylindrical holding claw.
The cylindrical holding claw is provided with two petals, and the top of the cylindrical holding claw is provided with two semicircular holes.
The two ends of the top of the cylindrical holding claw are symmetrically provided with J-shaped key grooves, and the notches of the J-shaped key grooves are chamfers.
The cylindrical holding claw is provided with an upper observation port and a lower observation port respectively.
The lower end face of the annular boss is in a slope shape.
The supporting block is a cuboid, a through hole is formed in the lower end of the supporting block, a groove matched with the supporting block is formed in the upper portion of the supporting flange, the supporting block is placed in the groove, a through hole corresponding to the through hole of the supporting block is formed in the supporting flange, and the pin shaft penetrates through the through holes in the lower ends of the supporting flange and is welded with the supporting flange.
The lower end surface of the supporting block is arc-shaped.
And a positioning boss is arranged at the top of the outer side of the groove on the supporting flange.
The hoisting pin penetrates through the round hole in the upper part of the rib plate and is fixedly connected with the rib plate through a nut.
The lower portion of the bearing shaft is of a rectangular structure, a groove matched with the rectangular structure on the lower portion of the bearing shaft is formed in the inner surface of the top of the nut cap, and the lower portion of the bearing shaft is clamped in the groove, so that the bearing shaft and the nut cap are guaranteed not to rotate relatively.
Two fan-shaped keys are symmetrically arranged on the inner surfaces of two ends of the bottom of the cap.
The J-shaped key groove of the cylindrical holding claw is matched and connected with the fan-shaped key of the cap.
The hoisting method of the reactor moving component lifting appliance comprises the following steps:
step (1) grasping a semicircular hole part at the top of a cylindrical holding claw by two hands, enabling the two cylindrical holding claws to be outwards opened until a supporting block contacts a positioning boss, aligning a supporting flange to the head of a moving assembly, and putting down a bearing cylinder;
step (2) closing the two cylindrical clamping claws, and aligning the fan-shaped key to the notch of the J-shaped key groove to rotate clockwise to the bottom;
and (3) hanging the hanging strip on a cantilever crane hook after penetrating through the hoisting pin, and lifting the cantilever crane hook until the moving assembly is completely hoisted out of the moving assembly storage barrel.
The invention has the following beneficial effects:
(1) the invention avoids the tightening (or opening) of the holding claws of the existing lifting appliance in a thread rotating mode, adopts a mode of manually closing the two-piece cylindrical holding claws and then locking the opening by the cap, effectively saves the space and does not interfere with other equipment on site;
(2) the fan-shaped key and the J-shaped key groove are simple and convenient to connect, and time and labor are saved compared with thread rotation; the connection between the J-shaped key groove and the fan-shaped key has high reliability, and whether the hanging beam is reliably connected with the bearing cylinder body can be simply and clearly judged through the waterproof marked line on the outer surface of the cylindrical holding claw;
(3) the invention is provided with two locking fixed points of the bottom positioning flange and the top hanging beam cap, compared with the existing lifting appliance, the connection between the lifting appliance and the moving assembly is more reliable, and the occurrence of human error events is effectively avoided;
(4) the main stress bearing part of the invention is symmetrical left and right, the upper and lower sectional areas have no obvious difference, and the invention is not easy to deform after long-term use;
(5) the lifting appliance is provided with the semicircular hole, the upper observation port and the lower observation port, so that the weight of the lifting appliance is effectively reduced on the basis of not influencing the overall strength and the bearing capacity of the lifting appliance, and the lifting appliance is convenient for workers to disassemble, assemble and carry;
(6) according to the invention, the positioning flange is provided with the positioning boss, the position of the boss is designed according to the maximum opening angle limit value of the cylindrical holding claw in the moving component storage barrel, and the opening angle of the cylindrical holding claw is limited, so that the bearing barrel can be smoothly installed on the head of the moving component, and meanwhile, the bearing barrel cannot be scraped or collided with the wall of the storage barrel.
Drawings
FIG. 1 is a schematic diagram of a mobile component spreader configuration provided by the present invention;
figure 2 is a cross-sectional view a-a of a moving assembly spreader according to the present invention;
FIG. 3 is a cross-sectional view of a moving assembly spreader B-B provided by the present invention;
fig. 4 is an assembly view of a mobile component spreader in use according to the present invention;
in the figure: 1-cylindrical holding claws; 2-a support flange; 3-a pin shaft; 4-semicircular hole; 5-a key slot; 6-upper viewing port; 7-an annular boss; 8-lower viewing port; 9-a support block; 10-positioning a boss; 11-hoisting pins; 12-a nut; 13-a rib plate; 14-a load bearing shaft; 15-capping; 16-a fan key; 17-moving the assembly head; 18-a moving assembly magazine; 19-a harness; 20-cantilever crane hook.
Detailed Description
The invention is further described below with reference to the figures and examples:
as shown in fig. 1, fig. 2 and fig. 3, the reactor moving assembly hanger provided by the invention comprises a cylindrical holding claw 1, a supporting flange 2, a pin shaft 3, a semicircular hole 4, a key groove 5, an upper observation port 6, an annular boss 7, a lower observation port 8, a supporting block 9, a positioning boss 10, a hoisting pin 11, a nut 12, a rib plate 13, a bearing shaft 14, a cap 15 and a fan-shaped key 16.
The hoisting pin 11 crosses the round hole of the ribbed plate 13 and is fixedly connected with the nut 12. The lifting pin 11, the nut 12 and the rib plate 13 are combined to form a lifting lug of the whole moving assembly lifting appliance. Bearing axle 14 passes the through-hole at the top of block 15 and the through-hole of rib plate 13 center inside to with rib plate 13 welded fastening, bearing axle 14 lower part is the rectangle structure, the internal surface in block of 15 tops of block has and bearing axle 14 lower part rectangle structure matched with recess, bearing axle 14 lower part rectangle structure block is in the recess, guarantees that bearing axle (14) and block (15) do not take place relative rotation. Two fan-shaped keys 16 are symmetrically arranged on the inner surfaces of the two ends of the bottom of the cap 15.
The cylindrical holding claw 1 is provided with two petals which are combined together to form a complete cylinder. The top of each cylindrical holding claw 1 is provided with a semicircular hole 4, so that a gripping part is provided for the cylindrical holding claws 1 during installation or removal, and the cylindrical holding claws are used as state observation ports of the head 17 of the moving assembly. In addition, on the basis that the overall strength and the bearing capacity of the lifting appliance are not influenced, the semicircular holes 4 effectively reduce the weight of the lifting appliance, and workers can conveniently disassemble, assemble and carry the lifting appliance.
Two ends of the upper part of the cylindrical holding claw 1 are symmetrically provided with J-shaped key grooves 5 which are matched with fan-shaped keys 16 on the cover cap 15, so that the reliable connection of the hanging beam and the bearing cylinder body is realized. The key groove 5 with the J-shaped structure has the characteristics of convenience and reliability in connection, and can judge whether the key groove is connected in place through visual or simple marking, so that human errors can be effectively avoided. And chamfering treatment is carried out at the notch of the J-shaped key groove 5, so that the fan-shaped key 16 and the notch can be conveniently centered and installed.
The cylindrical holding claw 1 is provided with an upper observation port 6 and a lower observation port 8, so that the weight of the lifting appliance is effectively reduced on the basis of not influencing the overall strength and the bearing capacity of the lifting appliance, and the lifting appliance is convenient for workers to disassemble, assemble and carry.
The inner surface of the cylindrical holding claw 1 is provided with an annular boss 7, and when the moving component is hoisted, the annular boss 7 is clamped at the position of a middle groove of the head 17 of the moving component. A slope is formed between the lower end face of the annular boss 7 and the inner surface of the cylindrical holding claw 1, so that the installation process is smoother. When the moving component lifting appliance is connected or detached in the moving component storage barrel 18, a worker effectively checks the relative position of the annular boss 7 and the lifting point of the head 17 of the moving component through the upper observation port 6, and the relative position serves as an important basis for judging the reliable connection between the cylindrical holding claw 1 and the moving component.
The lower extreme welding of claw 1 is embraced to the tube-shape has supporting shoe 9, and supporting shoe 9 is the cuboid, and the lower extreme is opened there is the through-hole, and support flange 2 upper surface is opened has the recess with supporting shoe 9 matched with, and supporting shoe 9 places in the recess, realizes that support flange 2 and tube-shape are embraced claw 1's connection. The supporting flange 2 is provided with a through hole corresponding to the through hole of the supporting block 9, and the pin shaft 3 penetrates through the through holes at the lower ends of the supporting flange 2 and the supporting block 9 and is welded with the supporting flange 2. The lower end face of the supporting block 9 is arc-shaped, so that the supporting block 9 can rotate on the pin shaft 3, and the opening and closing of the cylindrical holding claw 1 are realized.
The top of the outer side of the groove of the supporting flange 2 is provided with a positioning boss 10, and the positioning boss 10 limits the opening angle of the cylindrical holding claw 1, so that the cylindrical holding claw 1 is smoothly installed on the head 17 of the moving assembly, and meanwhile, the cylindrical holding claw 1 cannot be scraped or collided with the storage barrel 18 of the moving assembly.
The cylindrical holding claw 1 and the supporting flange 2 form a bearing cylinder part of the moving component lifting appliance.
The invention has many advantages, the fan-shaped key 16 in the moving component lifting appliance is simply and conveniently connected with the J-shaped key groove 5, the bottom supporting flange 2 and the cover cap 15 are provided with two locking fixed points, compared with the prior lifting appliance, the connection is more reliable, and the occurrence of human error events is effectively avoided. The lifting appliance for the movable assembly is mainly stressed and bears by the annular boss 7 and the parts above the annular boss, and the parts are bilaterally symmetrical and are not easy to deform after long-term use.
As shown in fig. 4, the present invention also provides a method for hoisting a reactor moving assembly hanger, which comprises the following steps:
step (1), grabbing the part of a semicircular hole 4 at the top of a cylindrical holding claw 1 by two hands, enabling the two-piece cylindrical holding claw 1 to be outwards opened until a supporting block 9 contacts a positioning boss 10, aligning a supporting flange 2 to a head 17 of a moving assembly, and lowering a bearing cylinder;
step (2) folding the two-piece cylindrical holding claw 1, checking the relative position of the annular boss 7 and the lifting point of the head 17 of the moving assembly through the upper observation port 6, and aligning the fan-shaped key 16 to the notch of the J-shaped key groove 5 to rotate clockwise to the bottom;
and (3) hanging the hanging strip 19 on an on-site cantilever crane hook 20 after penetrating through the hoisting pin 11, and lifting the cantilever crane hook 20 until the moving assembly is completely lifted out of the moving assembly storage barrel 18.
The invention solves the problems and hidden troubles of the prior lifting appliance, improves the connection convenience and reliability of the lifting appliance of the movable assembly, and effectively avoids industrial safety and human error events in the operation process. The project can be popularized and applied in the related work of the same type of units.
The present invention has been described in detail with reference to the embodiments, but the present invention is not limited to the embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art. The prior art can be adopted in the content which is not described in detail in the invention.
Claims (13)
1. The utility model provides a reactor removes subassembly hoist which characterized in that: the lifting appliance comprises a cylindrical holding claw (1), a support flange (2), an annular boss (7), a support block (9), a lifting pin (11), a nut (12), a ribbed plate (13), a bearing shaft (14) and a cover cap (15); the hoisting pin (11) is fixedly connected with the ribbed plate (13) through a nut (12), the bearing shaft (14) penetrates through a through hole in the top of the cap (15) and a through hole in the center of the ribbed plate (13) and is fixedly connected with the ribbed plate (13), and the cap (15) is fixedly connected with the cylindrical holding claw (1); the cylindrical holding claw (1) is connected with the supporting flange (2) through the supporting block (9), and the inner surface of the middle part of the cylindrical holding claw (1) is provided with an annular boss (7).
2. A reactor moving assembly spreader according to claim 1, wherein: the cylindrical holding claw (1) is provided with two petals, and the top of the cylindrical holding claw is provided with two semicircular holes (4).
3. A reactor moving assembly spreader according to claim 2, wherein: two ends of the top of the cylindrical holding claw (1) are symmetrically provided with J-shaped key grooves (5), and notches of the J-shaped key grooves (5) are chamfers.
4. A reactor moving assembly spreader according to claim 3, wherein: the cylindrical holding claw (1) is provided with an upper observation port (6) and a lower observation port (8) respectively.
5. A reactor moving assembly spreader according to claim 4, wherein: the lower end face of the annular boss (7) is in a slope shape.
6. A reactor moving assembly spreader according to claim 5, wherein: the supporting block (9) is a cuboid, a through hole is formed in the lower end of the supporting block, a groove matched with the supporting block (9) is formed in the upper portion of the supporting flange (2), the supporting block (9) is placed in the groove, a through hole corresponding to the through hole of the supporting block (9) is formed in the supporting flange (2), and the pin shaft (3) penetrates through the through holes in the lower ends of the supporting flange (2) and the supporting block (9) and is welded with the supporting flange (2).
7. A reactor moving assembly spreader according to claim 6, wherein: the lower end surface of the supporting block (9) is arc-shaped.
8. A reactor moving assembly spreader according to claim 7, wherein: and a positioning boss (10) is arranged at the top of the outer side of the groove on the supporting flange (2).
9. A reactor moving assembly spreader according to claim 8, wherein: the hoisting pin (11) penetrates through a round hole in the upper part of the rib plate (13) and is fixedly connected with the round hole through a nut (12).
10. A reactor moving assembly spreader according to claim 9, wherein: the lower portion of the bearing shaft (14) is of a rectangular structure, a groove matched with the rectangular structure on the lower portion of the bearing shaft (14) is formed in the inner surface of the top of the cover cap (15), the lower portion of the bearing shaft (14) is clamped in the groove, and the bearing shaft (14) and the cover cap (15) are guaranteed not to rotate relatively.
11. A reactor moving assembly spreader according to claim 10, wherein: two fan-shaped keys (16) are symmetrically arranged on the inner surfaces of the two ends of the bottom of the cap (15).
12. A reactor moving assembly spreader according to claim 11, wherein: the J-shaped key groove (5) of the cylindrical holding claw (1) is matched and connected with the fan-shaped key (16) of the cap (15).
13. A method of lifting a reactor moving assembly spreader according to any one of claims 1 to 12, the method including the steps of:
step (1), grabbing the position of a semicircular hole (4) in the top of a cylindrical holding claw (1) by two hands, enabling the two-petal cylindrical holding claw (1) to be outwards opened until a supporting block (9) contacts a positioning boss (10), aligning a supporting flange (2) to a head (17) of a moving assembly, and lowering a bearing cylinder;
step (2) folding the two-petal cylindrical holding claw (1), aligning the fan-shaped key (16) with the notch of the J-shaped key groove (5) and rotating clockwise to the bottom;
and (3) hanging the hanging strip (19) on a cantilever crane hook (20) after penetrating through the hoisting pin (11), and lifting the cantilever crane hook (20) until the moving assembly is completely hoisted out of the moving assembly storage barrel (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010673237.1A CN111816336A (en) | 2020-07-14 | 2020-07-14 | Lifting appliance and lifting method for reactor moving assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010673237.1A CN111816336A (en) | 2020-07-14 | 2020-07-14 | Lifting appliance and lifting method for reactor moving assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111816336A true CN111816336A (en) | 2020-10-23 |
Family
ID=72842371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010673237.1A Pending CN111816336A (en) | 2020-07-14 | 2020-07-14 | Lifting appliance and lifting method for reactor moving assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111816336A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI781773B (en) * | 2021-09-27 | 2022-10-21 | 行政院原子能委員會核能研究所 | Containers hoister |
-
2020
- 2020-07-14 CN CN202010673237.1A patent/CN111816336A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI781773B (en) * | 2021-09-27 | 2022-10-21 | 行政院原子能委員會核能研究所 | Containers hoister |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111816336A (en) | Lifting appliance and lifting method for reactor moving assembly | |
| CN212516591U (en) | Lifting appliance for reactor moving assembly | |
| CN207877121U (en) | A kind of equipment for supporting patient with burn of steel box-girder | |
| CN203837920U (en) | Protective cover for engine shaft coupling | |
| CN102070076A (en) | Pincer-cutting grab bucket | |
| CN103663095A (en) | Herringbone overturn lifting appliance for cylinder body bobbin core set | |
| CN205616448U (en) | Perpendicular hydro -cylinder of wheel crane activity landing leg hoist and mount frock that can be general | |
| CN212559099U (en) | Hoisting tool for dual-fuel diesel engine cylinder body | |
| CN215402654U (en) | Be applied to turning device of sealed quiet ring of EPR unit main pump | |
| CN220055028U (en) | Container | |
| CN213112159U (en) | Hoisting accessory is used to large-scale storage tank anti-wind circle | |
| CN219174027U (en) | Lifting appliance structure | |
| CN215666560U (en) | Special tool for hoisting baffle plate of sintering machine trolley | |
| CN220264957U (en) | Overturning lifting equipment | |
| CN115164085B (en) | Gas holder dismantling construction method | |
| CN218595873U (en) | Marine large-scale butterfly valve lift by crane appurtenance | |
| CN215558292U (en) | Engine cylinder block overhead hoist | |
| CN211004262U (en) | Manhole cover rotating suspension arm | |
| CN213503674U (en) | Transport case lifts by crane corner fittings | |
| CN216625086U (en) | Column type view becomes convenient to hoist and mount | |
| CN218708580U (en) | Connecting lifting appliance for spraying of top surface of upright column jack | |
| CN219526022U (en) | Single-piece hoisting gripping apparatus for sodium-cooled fast reactor simulation assembly | |
| CN115384966B (en) | Marine container with full-automatic locking loading and unloading corner fitting | |
| CN221350555U (en) | Device for load test of fuel assembly lifting appliance | |
| CN216807762U (en) | Direct-drive permanent magnet motor shell installation lifting appliance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |