CN221543849U - Dual-purpose lifting appliance for engine cylinder cover - Google Patents
Dual-purpose lifting appliance for engine cylinder cover Download PDFInfo
- Publication number
- CN221543849U CN221543849U CN202323381573.7U CN202323381573U CN221543849U CN 221543849 U CN221543849 U CN 221543849U CN 202323381573 U CN202323381573 U CN 202323381573U CN 221543849 U CN221543849 U CN 221543849U
- Authority
- CN
- China
- Prior art keywords
- engine cylinder
- lifting
- plate
- mounting plate
- cylinder cover
- 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.)
- Active
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 17
- 229910052802 copper Inorganic materials 0.000 claims description 17
- 239000010949 copper Substances 0.000 claims description 17
- 230000001681 protective effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000005484 gravity Effects 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036544 posture Effects 0.000 description 1
Landscapes
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a dual-purpose lifting appliance for an engine cylinder cover, which comprises a mounting plate (2), wherein a connecting structure is arranged at the top of the mounting plate (2); lifting hook structures are respectively arranged at two ends of the mounting plate (2); a limiting structure is arranged at the bottom of the mounting plate (2); the engine cylinder cover (12) is connected with the lifting hook structure; the connecting structure is connected with a lifting hook. The dual-purpose lifting appliance for the engine cylinder cover is provided with the connecting structure, and can realize two functions of flat lifting and inclined lifting by connecting different lifting rings; the work piece is stable and the connection is stable and reliable when a worker lifts the engine cylinder cover; the working efficiency is improved while the operation safety of workers is ensured; particularly in the partial double-station working procedure, the lifting device needs to be lifted at two angles, so that frequent replacement of the lifting device in the process can be avoided, the working efficiency is further improved, and the manufacturing cost of the lifting device is reduced.
Description
Technical Field
The utility model belongs to the technical field of engine processing, and particularly relates to a dual-purpose lifting appliance for an engine cylinder cover.
Background
In the process of machining and manufacturing the engine cylinder cover, a 3-axis (XYZ) or 4-axis (XYZB) machining center is generally adopted for machining, the machining content needs to be finished in different clamping postures, and some hole systems need to be machined by clamping the top surface of the cylinder cover upwards, and then a flat lifting appliance needs to be lifted; part of the bevel hole system is needed to be lifted to the clamp with the same angle after the cylinder cover is inclined for a certain angle, the main shaft is matched to finish the processing of the special angle content, and the lifting appliance needs to be inclined for a certain angle to finish the lifting at the moment; lifting equipment used in the existing production provides a single lifting mode; the lifting appliance needs to be frequently replaced to meet the production requirement, so that the production efficiency is low; and meanwhile, the manufacturing cost of the used lifting appliances with different specifications is high.
The applicant finds that Chinese patent document with publication number of CN217947362U discloses an engine cylinder cover lifting appliance in 2022, 12 months and 2 days, which comprises a lifting frame (1), wherein the lower end of the lifting frame is fixedly connected with lifting hooks (2) which are uniformly distributed, and the surface of the lifting hooks (2) is provided with a fixed rope; the locating mechanisms are uniformly distributed and used for reducing the swing of the fixed rope, the locating mechanisms are arranged in the lifting hook, and the surfaces of the locating mechanisms penetrate through the lifting hook and are in contact with the fixed rope.
The device can not simultaneously have the function of carrying out flat suspension or accurate angle inclined suspension on the engine cylinder cover.
Disclosure of utility model
The utility model aims to provide an engine cylinder cover dual-purpose lifting appliance which simultaneously has the functions of carrying out flat lifting or accurate angle inclined lifting on an engine cylinder cover.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model comprises a mounting plate, wherein the top of the mounting plate is provided with a connecting structure; the two ends of the mounting plate are respectively provided with a lifting hook structure; a limiting structure is arranged at the bottom of the mounting plate; the engine cylinder cover is connected with the lifting hook structure; the connecting structure is connected with a lifting hook.
The connecting structure comprises a connecting plate, and a first hanging ring and a second hanging ring are respectively arranged at two ends of the connecting plate; the connecting plate is connected with the mounting plate.
A first mounting hole and a second mounting hole are respectively formed at two ends of the connecting plate; the first mounting hole is connected with the first hanging ring; the second mounting hole is connected with the second hanging ring.
The connecting plate is provided with a mounting groove; the mounting plate is arranged in the mounting groove; the connecting plate is arranged in a crossing way with the mounting plate; the first hanging ring and the second hanging ring are respectively arranged on two sides of the mounting plate.
The lifting hook structure comprises a first lifting hook and a second lifting hook; the first lifting hook and the second lifting hook are respectively arranged at two ends of the mounting plate.
A first extension plate and a second extension plate are respectively arranged at two ends of the mounting plate; the first extension plate and the second extension plate are arranged at the bottom of the mounting plate; the side face of the first extension plate is connected with the first lifting hook, and the side face of the second extension plate is connected with the second lifting hook.
The limiting structure comprises a lateral connecting plate, and one end of the lateral connecting plate is connected with the mounting plate; the other end of the lateral connecting plate is provided with a protection structure.
The lateral connecting plates are of L-shaped structures; the end part of the lateral connecting plate is connected with the bottom of the mounting plate; the lateral connecting plate is connected to the middle part of the mounting plate; the lateral connecting plate is arranged on one side, far away from the first hanging ring, of the mounting plate.
The protection structure comprises a copper block; the copper block is arranged at the end part of the lateral connecting plate; and bolts are connected between the copper blocks and the lateral connecting plates.
The top of the engine cylinder cover is provided with a first connecting hole and a second connecting hole respectively; the first lifting hook is arranged in the first connecting hole, and the second lifting hook is arranged in the second connecting hole;
The first lifting ring is arranged above the engine cylinder cover, and the first lifting ring is arranged in the middle of the engine cylinder cover; the end parts of the lateral connecting plates and the copper blocks are contacted with the top surface of the engine cylinder cover.
The beneficial effects of the application are as follows: the device comprises a mounting plate, wherein a connecting structure is arranged at the top of the mounting plate; the two ends of the mounting plate are respectively provided with a lifting hook structure; a limiting structure is arranged at the bottom of the mounting plate; the engine cylinder cover is connected with the lifting hook structure; the connecting structure is connected with a lifting hook.
The connecting structure with the lifting hook structure all with the mounting panel is connected, connecting structure is connected with machining center's lifting hook, the lifting hook structure with the engine cylinder cap is connected, can realize the work of lifting by crane of engine cylinder cap, lifts by crane easy operation, connects reliable and stable.
The connecting structure comprises a connecting plate with two ends connected with a first hanging ring and a second hanging ring; the first hanging ring is arranged above the middle part of the engine cylinder cover; a lateral connecting plate is arranged on one side, away from the first hanging ring, of the mounting plate;
When the device carries out flat hanging on the engine cylinder cover, the lifting hook structure is connected with the engine cylinder cover; the first hanging ring is hooked by the lifting hook, and the lateral connecting plate is contacted with the surface of the engine cylinder cover to provide support at the moment, so that the engine cylinder cover can be lifted straight by the device;
When the device obliquely hangs the engine cylinder cover, the lifting hook structure is connected with the engine cylinder cover; the second hanging ring is hooked by the lifting hook, at the moment, the vertical line where the lifting point is located passes through the gravity center of the engine cylinder cover, the included angle between the engine cylinder cover and the horizontal is 30 degrees, and the engine cylinder cover is consistent with the clamping angle, so that quick positioning and clamping can be realized. If the inclination angle of the cylinder cover needs to be changed, only the distance between the second hanging ring and the mounting plate needs to be changed.
The dual-purpose lifting appliance for the engine cylinder cover is provided with the connecting structure, and can realize two functions of flat lifting and inclined lifting by connecting different lifting rings; the work piece is stable and the connection is stable and reliable when a worker lifts the engine cylinder cover; the working efficiency is improved while the operation safety of workers is ensured; particularly in the partial double-station working procedure, the lifting device needs to be lifted at two angles, so that frequent replacement of the lifting device in the process can be avoided, the working efficiency is further improved, and the manufacturing cost of the lifting device is reduced.
Drawings
The utility model is described in further detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic structural view of the dual-purpose lifting appliance for the engine cylinder cover.
Fig. 2 is a schematic diagram of the operation of the engine cylinder head dual-purpose lifting appliance in a horizontal lifting mode.
Fig. 3 is a schematic diagram of the oblique lifting operation of the dual-purpose lifting appliance for the engine cylinder cover.
The labels in the above figures are:
Marked in the figure as: 1. a first lifting hook, 2, a mounting plate, 3, a copper block, 4, a lateral connecting plate, 5, a first lifting ring, 6, a second lifting ring, 7, a connecting plate, 8, second lifting hook, 9, mounting groove, 10, first extension board, 11, second extension board, 12, engine cylinder cap.
Detailed Description
The following detailed description of the embodiments of the utility model, given by way of example only, is presented in the accompanying drawings to aid those skilled in the art in a more complete, accurate and thorough understanding of the inventive concepts and aspects of the utility model, and to facilitate their practice.
The dual-purpose lifting appliance for the engine cylinder cover shown in fig. 1 comprises a mounting plate 2, wherein a connecting structure is arranged at the top of the mounting plate 2; the two ends of the mounting plate 2 are respectively provided with a lifting hook structure; the bottom of the mounting plate 2 is provided with a limit structure; the engine cylinder cover 12 is connected with the lifting hook structure; the connecting structure is connected with a lifting hook.
The connecting structure and the lifting hook structure are both connected with the mounting plate 2, the connecting structure is connected with a lifting hook of a machining center, the lifting hook structure is connected with the engine cylinder cover 12, the flat lifting and inclined lifting work of the engine cylinder cover 12 can be realized, the lifting operation is simple, and the connection is stable and reliable.
The connecting structure comprises a connecting plate 7, and a first hanging ring 5 and a second hanging ring 6 are respectively arranged at two ends of the connecting plate 7; the connection plate 7 is connected with the mounting plate 2.
The first hanging ring 5 and the second hanging ring 6 are of circular structures; the connecting plate 7 is connected with the mounting plate 2; the first lifting ring 5 and the second lifting ring 6 are connected to different positions on the connecting plate 7, when the lifting hook of the machining center hooks the first lifting ring 5, the vertical line where the lifting point of the first lifting ring 5 is located passes through the gravity center of the engine cylinder cover 12 and coincides with the vertical direction, so that the horizontal lifting operation of the engine cylinder cover 12 can be realized; when the second lifting ring 6 is hooked by the lifting hook, the vertical line where the lifting point of the second lifting ring 6 is located passes through the gravity center of the engine cylinder cover 12, and the engine cylinder cover 12 forms an included angle of 30 degrees with the horizontal direction, so that the inclined lifting operation of the engine cylinder cover 12 is realized.
The two ends of the connecting plate 7 are respectively provided with a first mounting hole and a second mounting hole; the first mounting hole is connected with the first hanging ring 5; the second mounting hole is connected with a second hanging ring 6.
The first mounting hole and the second mounting hole are through holes; the first mounting hole and the second mounting hole are arranged on the side surface of the connecting plate 7; the first hanging ring 5 and the second hanging ring 6 are both arranged in the mounting hole; the connection between the lifting ring and the connecting plate 7 is stable and reliable, and the first lifting ring 5 and the second lifting ring 6 can freely rotate on the connecting plate 7, so that the engine cylinder cover 12 can be horizontally and obliquely lifted.
The connecting plate 7 is provided with a mounting groove 9; the mounting plate 2 is placed in the mounting groove 9; the connecting plate 7 is arranged in a crossing way with the mounting plate 2; the first hanging ring 5 and the second hanging ring 6 are respectively arranged on two sides of the mounting plate 2.
The mounting plate 2 is arranged vertically to the connecting plate 7; the bottom and the side surfaces of the mounting plate 2 are embedded into the mounting groove 9, and the contact surfaces of the mounting plate 2 and the mounting groove 9 are welded; therefore, the connecting structure of the mounting plate 2 and the connecting plate 7 is effectively reinforced, and the situation that when the engine cylinder cover 12 is hoisted by using the device, the load borne by the connecting plate 7 is large, so that the connecting plate 7 and the mounting plate 2 are disassembled, and production accidents occur is avoided.
The hook structure comprises a first hook 1 and a second hook 8; the first lifting hook 1 and the second lifting hook 8 are respectively arranged at two ends of the mounting plate 2.
The first lifting hook 1 and the second lifting hook 8 are of L-shaped structures and are matched with the connecting point structure on the engine cylinder cover 12; the first lifting hooks 1 and the second lifting hooks 8 are distributed at two ends of the mounting plate 2, and the positions of the first lifting hooks and the second lifting hooks correspond to the positions of connecting points of the engine cylinder cover 12, so that the device can be stably connected with the engine cylinder cover 12.
The two ends of the mounting plate 2 are respectively provided with a first extension plate 10 and a second extension plate 11; the first extension plate 10 and the second extension plate 11 are arranged at the bottom of the mounting plate 2; the side of the first extension plate 10 is connected to the first hooks 1 and the side of the second extension plate 11 is connected to the second hooks 8.
The first extension plate 10 and the second extension plate 11 are square plates; the first extension plate 10 and the second extension plate 11 protrude downward from the bottom of the mounting plate 2; therefore, the mounting of the limit structure can be abducted, the whole structure of the device is reinforced, and the bearing capacity of the device is effectively increased.
The limiting structure comprises a lateral connecting plate 4, and one end of the lateral connecting plate 4 is connected with the mounting plate 2; the other end of the lateral connecting plate 4 is provided with a protection structure. The side direction connecting plate 4 can provide the support for the side of mounting panel 2 when this device lifts by crane, guarantees that it is perpendicular with the top surface of engine cylinder cap 12, avoids mounting panel 2 atress to rotate, leads to unable completion engine cylinder cap 12's flat crane and oblique hanging work.
The lateral connecting plate 4 is of an L-shaped structure; the end part of the lateral connecting plate 4 is connected with the bottom of the mounting plate 2; the lateral connecting plate 4 is connected to the middle part of the mounting plate 2; the lateral connecting plate 4 is arranged on the side of the mounting plate 2 remote from the first lifting ring 5.
The lateral connecting plate 4 is of an L-shaped structure and is arranged in the middle of the mounting plate 2; when the lifting hook hooks the first lifting ring 5 or the second lifting ring 6, the lateral connecting plate 4 abuts against the top surface of the engine cylinder cover 12, so that the mounting plate 2 cannot rotate along with stress; thereby, the operations of the horizontal and diagonal hanging of the engine head 12 can be completed.
The protection structure comprises a copper block 3; the copper block 3 is arranged at the end part of the lateral connecting plate 4; bolts are connected between the copper blocks 3 and the lateral connecting plates 4. The copper block 3 is of a cylindrical structure, a square mounting groove is formed in the end part of the lateral connecting plate 4, and the copper block 3 is mounted in the square mounting groove through bolts; when the device is in lifting operation, the copper block 3 is in contact with the top surface of the engine cylinder cover 12, and the top surface of the cylinder cover after finish machining is protected.
The top of the engine cylinder cover 12 is provided with a first connecting hole and a second connecting hole respectively; the first lifting hook 1 is arranged in the first connecting hole, and the second lifting hook 8 is arranged in the second connecting hole;
The first lifting ring 5 is arranged above the engine cylinder cover 12, and the first lifting ring 5 is arranged in the middle of the engine cylinder cover 12; both the end of the lateral connecting plate 4 and the copper block 3 are in contact with the top surface of the engine head 12.
The first connecting hole is a blank cavity hole below a3 rd gear shaft cover of the engine cylinder cover 12; the second connecting hole is a blank cavity hole below a 5 th gear shaft cover of the engine cylinder cover 12; the first lifting ring 5 is arranged above the middle point of the engine cylinder cover 12, and when the first lifting ring 5 is hooked for lifting, the device can enable the engine cylinder cover 12 to finish the flat lifting operation; the end part of the lateral connecting plate 4 is contacted with the top surface of the engine cylinder cover 12, so that the mounting plate 2 can be ensured not to deflect; the copper block 3 is in contact with the top surface of the engine head 12 to provide protection for the top surface of the finished engine head 12.
The specific working procedure of the utility model is as follows:
When the engine cylinder cover 12 is horizontally hung, the device connects the first hanging ring 5 with the first connecting hole and connects the second hanging ring 6 with the second connecting hole; the first hanging ring 5 is hooked by using a lifting hook of a machining center, at the moment, the lateral connecting plate 4 provides support for the surface contact of the engine cylinder cover 12, and the vertical line of the lifting point of the first hanging ring 5 passes through the gravity center of the engine cylinder cover 12 and coincides with the vertical direction; the device can vertically hoist the engine cylinder cover 12;
When the device is used for obliquely hanging the engine cylinder cover 12, the second hanging ring 6 is hooked by the hanging hook, at the moment, the vertical line where the hanging point is located passes through the gravity center of the engine cylinder cover 12, the included angle between the engine cylinder cover 12 and the horizontal is 30 degrees, and the angle is consistent with the clamping angle, so that quick positioning and clamping can be realized. If the inclination angle of the cylinder cover needs to be changed, only the distance between the second hanging ring 6 and the mounting plate 2 needs to be changed.
The utility model is described above by way of example with reference to the accompanying drawings. It will be clear that the utility model is not limited to the embodiments described above. As long as various insubstantial improvements are made using the method concepts and technical solutions of the present utility model; or the utility model is not improved, and the conception and the technical scheme are directly applied to other occasions and are all within the protection scope of the utility model.
Claims (10)
1. The utility model provides a dual-purpose hoist of engine cylinder cap which characterized in that: the device comprises a mounting plate (2), wherein a connecting structure is arranged at the top of the mounting plate (2); lifting hook structures are respectively arranged at two ends of the mounting plate (2); a limiting structure is arranged at the bottom of the mounting plate (2); the engine cylinder cover (12) is connected with the lifting hook structure; the connecting structure is connected with a lifting hook.
2. The engine cylinder head dual-purpose hanger according to claim 1, wherein: the connecting structure comprises a connecting plate (7), and a first hanging ring (5) and a second hanging ring (6) are respectively arranged at two ends of the connecting plate (7); the connecting plate (7) is connected with the mounting plate (2).
3. The engine cylinder head dual-purpose hanger according to claim 2, wherein: a first mounting hole and a second mounting hole are respectively formed at two ends of the connecting plate (7); the first mounting hole is connected with the first hanging ring (5); the second mounting hole is connected with the second hanging ring (6).
4. The engine cylinder head dual-purpose hanger according to claim 3, wherein: the connecting plate (7) is provided with a mounting groove (9); the mounting plate (2) is arranged in the mounting groove (9); the connecting plate (7) is arranged in a crossing way with the mounting plate (2); the first hanging ring (5) and the second hanging ring (6) are respectively arranged on two sides of the mounting plate (2).
5. The engine cylinder head dual-purpose hanger according to claim 2, wherein: the hook structure comprises a first hook (1) and a second hook (8); the first lifting hook (1) and the second lifting hook (8) are respectively arranged at two ends of the mounting plate (2).
6. The engine cylinder head dual-purpose hanger of claim 5, wherein: a first extension plate (10) and a second extension plate (11) are respectively arranged at two ends of the mounting plate (2); the first extension plate (10) and the second extension plate (11) are arranged at the bottom of the mounting plate (2); the side face of the first extension plate (10) is connected with the first lifting hook (1), and the side face of the second extension plate (11) is connected with the second lifting hook (8).
7. The engine cylinder head dual-purpose hanger of claim 6, wherein: the limiting structure comprises a lateral connecting plate (4), and one end of the lateral connecting plate (4) is connected with the mounting plate (2); the other end of the lateral connecting plate (4) is provided with a protection structure.
8. The engine cylinder head dual-purpose hanger of claim 7, wherein: the lateral connecting plates (4) are L-shaped structures; the end part of the lateral connecting plate (4) is connected with the bottom of the mounting plate (2); the lateral connecting plate (4) is connected to the middle part of the mounting plate (2); the lateral connecting plate (4) is arranged on one side, far away from the first hanging ring (5), of the mounting plate (2).
9. The engine cylinder head dual-purpose hanger of claim 8, wherein: the protective structure comprises a copper block (3); the copper block (3) is arranged at the end part of the lateral connecting plate (4); and a bolt is connected between the copper block (3) and the lateral connecting plate (4).
10. The engine cylinder head dual-purpose hanger of claim 9, wherein: the top of the engine cylinder cover (12) is provided with a first connecting hole and a second connecting hole respectively; the first lifting hook (1) is arranged in the first connecting hole, and the second lifting hook (8) is arranged in the second connecting hole;
The first lifting ring (5) is arranged above the engine cylinder cover (12), and the first lifting ring (5) is arranged in the middle of the engine cylinder cover (12); the end parts of the lateral connecting plates (4) and the copper blocks (3) are contacted with the top surface of the engine cylinder cover (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323381573.7U CN221543849U (en) | 2023-12-12 | 2023-12-12 | Dual-purpose lifting appliance for engine cylinder cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323381573.7U CN221543849U (en) | 2023-12-12 | 2023-12-12 | Dual-purpose lifting appliance for engine cylinder cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221543849U true CN221543849U (en) | 2024-08-16 |
Family
ID=92251461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323381573.7U Active CN221543849U (en) | 2023-12-12 | 2023-12-12 | Dual-purpose lifting appliance for engine cylinder cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221543849U (en) |
-
2023
- 2023-12-12 CN CN202323381573.7U patent/CN221543849U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN221543849U (en) | Dual-purpose lifting appliance for engine cylinder cover | |
| CN203889888U (en) | Steel plate hoisting clamp | |
| CN203006751U (en) | Side-balance hoisting tool for large revolving body air cylinder head | |
| CN103010944A (en) | Lateral balancing lifting tool for large-scale rotary cylinder | |
| CN112479036B (en) | Upright column overturning mechanism and overturning method for horizontal machining center | |
| CN213976614U (en) | Special supplementary hoist device of construction | |
| CN215439324U (en) | Hoisting tool for connecting rod of WINGD type marine diesel engine | |
| CN113734956A (en) | Lifting tool for cylindrical grinding machine workbench | |
| CN217627094U (en) | Hoisting device for overturning and overhauling water guide mechanism | |
| CN222273853U (en) | Lifting tool structure for loading and unloading equipment | |
| CN207046669U (en) | Lifting tool capable of being accurately adjusted | |
| CN219860130U (en) | Pump guard board auxiliary dismounting device | |
| CN216583769U (en) | A concrete block hoist for building engineering | |
| CN215711061U (en) | Clamping ring lifting appliance of chamfering machine for spiral submerged arc welded pipe | |
| CN214456351U (en) | Hoisting apparatus for building engineering | |
| CN218613829U (en) | A installation device for loop wheel machine round pin axle | |
| CN220578699U (en) | Hoisting lengthening device for vertical member | |
| CN216399467U (en) | Device for quickly disassembling and assembling gear milling cutter head for large-modulus high-speed gear milling machine tool | |
| CN211496582U (en) | Novel lifting appliance | |
| CN220131716U (en) | Lifting appliance for lifting aluminum titanium boron casting crystallization wheel | |
| CN215439289U (en) | Gear horizontal machining and mounting lifting appliance | |
| CN221370351U (en) | Novel reverse hanging electric hoist protection device | |
| CN222082209U (en) | Combined hook structure | |
| CN220300178U (en) | Movable hoisting device for rapidly installing steel column head | |
| CN216613726U (en) | Fan-shaped roller way hoisting frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |