CN221319038U - Gas tank top hoisting system - Google Patents
Gas tank top hoisting system Download PDFInfo
- Publication number
- CN221319038U CN221319038U CN202323049506.5U CN202323049506U CN221319038U CN 221319038 U CN221319038 U CN 221319038U CN 202323049506 U CN202323049506 U CN 202323049506U CN 221319038 U CN221319038 U CN 221319038U
- Authority
- CN
- China
- Prior art keywords
- gas tank
- hoisting
- fixed
- tank top
- supporting platform
- 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
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model discloses a gas tank top hoisting system, which belongs to the technical field of gas tank suspended ceilings and comprises a supporting platform, wherein a frame is fixedly arranged on the upper surface of the supporting platform, a hinge mechanism is fixedly arranged on the upper surface of the supporting platform, two hoisting assemblies are arranged on the upper surface of the supporting platform, and an anti-winding assembly is arranged on the upper surface of the hoisting assemblies; according to the utility model, due to the anti-winding assembly, the condition that a rope is wound in the working process of the hoisting equipment can be effectively avoided, so that the hoisting equipment is damaged, the working efficiency of a suspended ceiling of a gas tank is reduced, the hoisting is promoted to realize heavy lifting, the amplitude of the hoisting of the boom is changed by amplitude-variable hoisting, the working range and flexibility of the boom are increased, the monitoring device is arranged on the boom and used for monitoring the stress deformation condition and the stress change of the boom, and the frame and the support frame are arranged, so that the stress structure of the hoisting equipment is more reasonable, and the purpose of light weight is realized.
Description
Technical Field
The utility model belongs to the technical field of gas tank suspended ceilings, and particularly relates to a gas tank top hoisting system.
Background
The gas tank construction generally adopts a floating method, namely a lifting device is arranged on the top of the gas tank, and the tank body, the upright posts and the side plates are installed, so that the engineering problems of high construction cost and low efficiency of a large crane are solved.
The utility model discloses a lifting device (CN 204324748U) for installing a steel structure of a large gas storage cabinet, which comprises 2 groups of cabinet top crane systems, an annular track system and an anchoring system, wherein each cabinet top crane system comprises a hanging rod, a lifting hook, a steel wire rope, a tripod, an electric winch, a travelling frame and an auxiliary hook, the tripod and the electric winch are respectively fixed on the travelling frame, one end of the hanging rod is hinged on the travelling frame, the other end of the hanging rod is connected with the electric winch through the steel wire rope, the steel wire rope connected with the lifting hook sequentially passes through a pulley at the top end of the hanging rod and a pulley at the top end of the tripod, and finally is connected with the electric winch.
Disclosure of utility model
The utility model aims at: in order to solve the problems that stability and safety reliability are poor, long-time hoisting operation requirements cannot be met, and hoisting wall amplitude is difficult to realize in the hoisting process, the provided gas tank top hoisting system is provided.
In order to achieve the above purpose, the present utility model adopts the following technical scheme: the gas tank top hoisting system comprises a supporting platform, wherein a frame is fixedly arranged on the upper surface of the supporting platform, a hinge mechanism is fixedly arranged on the upper surface of the supporting platform, a suspension arm is fixedly arranged on the inner wall of the hinge mechanism, two hoisting assemblies are arranged on the upper surface of the supporting platform, and an anti-winding assembly is arranged on the upper surface of the hoisting assembly;
The anti-winding assembly comprises a fixed plate, a reciprocating screw is rotatably arranged on the inner wall of the fixed plate, a dredging wheel is arranged on the outer surface of the reciprocating screw in a threaded manner, and one end of the reciprocating screw extends out of the side wall of the fixed plate.
As a further description of the above technical solution:
One end of the reciprocating screw rod is fixedly provided with a first toothed chain wheel, the outer surface of the first toothed chain wheel is provided with a toothed chain in a meshed mode, and one end of the toothed chain is provided with a second toothed chain wheel in a meshed mode.
As a further description of the above technical solution:
The winding assembly comprises a supporting plate, the upper surface of the supporting plate is fixedly connected with the lower surface of the fixing plate, an installation cover is fixedly installed on the side wall of the supporting plate, a driving motor is fixedly installed on the inner wall of the installation cover, a winding column is fixedly installed at the output end of the driving motor, and one end of the winding column extends out of the side wall of the supporting plate and is fixedly connected with the side wall of the second toothed sprocket.
As a further description of the above technical solution:
The inner wall of the frame is rotatably provided with a supporting frame, one end of the supporting frame is fixedly connected with the upper surface of the supporting platform, the upper surface of the frame is fixedly provided with a mounting plate, and the side wall of the mounting plate is fixedly provided with an extension rope connecting piece.
As a further description of the above technical solution:
The fixed pulley is rotatably arranged on the inner side wall of the frame through the rotating shaft, and the fixed ring is fixedly arranged on the side wall of the frame.
As a further description of the above technical solution:
The side wall of the suspension arm is fixedly provided with a monitoring mechanism, the inner wall of the suspension arm is respectively provided with a first pulley and a second pulley through rotation of a rotating shaft, and the hoisting assembly is respectively a hoisting winch and a luffing winch.
As a further description of the above technical solution:
The inner wall of the fixed ring is fixedly provided with a steel rope, one end of the steel rope bypasses the outer surface of the first pulley and the outer surface of the fixed pulley and is fixedly connected with the outer surface of the winding column in the amplitude-variable winding assembly, the outer surface of the second pulley is slidably provided with a lifting rope, one end of the lifting rope is fixedly provided with a lifting hook, and the other end of the lifting rope is fixedly connected with the outer surface of the winding column in the lifting winding assembly.
As a further description of the above technical solution:
The upper surface of supporting platform is fixed with the locating plate, rotates through the pivot on the lateral wall of locating plate and installs the movable rod, the one end fixed mounting of movable rod has fixed cover, fixed mounting has the lifter on the inner wall of fixed cover, the one end fixed mounting of lifter has the travelling wheel.
As a further description of the above technical solution:
The lower surface of the supporting platform is rotatably provided with a rail wheel through a rotating shaft, the running wheel is positioned on the inner ring rail, and the rail wheel is positioned on the outer ring rail.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. According to the utility model, the anti-winding assembly is arranged, the second toothed chain wheel is driven to rotate along with the rotation of the winding column, the first toothed chain wheel drives the reciprocating screw rod to rotate on the inner wall of the fixed plate under the transmission of the toothed chain, and the dredging wheel is enabled to move back and forth through the threads on the outer surface along with the rotation of the reciprocating screw rod, so that the steel rope is uniformly wound on and unwound from the winding column when the steel rope is wound and unwound, the condition that the rope is wound in the working process of the hoisting equipment can be effectively avoided, the hoisting equipment is damaged, and the working efficiency of the suspended ceiling of the gas tank is reduced.
2. According to the utility model, by arranging the double hoisting assemblies, the hoisting winch realizes the hoisting of the heavy object, the amplitude-variable winch realizes the hoisting amplitude change of the boom, the operation range and the flexibility of the boom are increased, and the monitoring device is arranged on the boom and is used for monitoring the stress deformation condition and the stress change of the boom.
3. According to the utility model, the lifting device is provided with the frame and the supporting frame, so that the stress structure of the lifting device is more reasonable, the purpose of light weight is realized, and the mechanism capable of adjusting the spacing between the running wheels is arranged, so that the lifting device can adapt to the track spacing of various specifications, improves the aerial working environment and provides convenient conditions for lifting operation.
Drawings
Fig. 1 is a schematic perspective view of a gas tank top hoisting system.
Fig. 2 is a schematic perspective view of a hoisting assembly and an anti-winding assembly in a gas tank top hoisting system.
FIG. 3 is a schematic plan view of a gas tank top lifting system.
Fig. 4 is an enlarged schematic view of the gas tank top lifting system at a position a in fig. 3.
FIG. 5 is a side view of a gas tank top lifting system.
FIG. 6 is a top view of a gas tank top lifting system.
Legend description:
1. A support platform; 2. a frame; 3. a support frame; 4. a suspension arm; 5. a hoisting assembly; 51. a support plate; 52. a mounting cover; 53. winding a column; 6. an anti-wind assembly; 61. a fixing plate; 62. a reciprocating screw; 63. a dredging wheel; 64. a first toothed sprocket; 65. a toothed chain; 66. a second toothed sprocket; 7. a movable rod; 8. a fixed sleeve; 9. a lifting rod; 10. a running wheel; 11. a fixing ring; 12. a fixed pulley; 13. a monitoring mechanism; 14. a first pulley; 15. a second pulley; 16. a steel rope; 17. a hanging rope; 18. a lifting hook; 19. a rail wheel; 20. a rope connecting piece; 21. a mounting plate; 22. and a hinge mechanism.
Description of the embodiments
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-6, the present utility model provides a technical solution: the gas tank top hoisting system comprises a supporting platform 1, wherein a frame 2 is fixedly arranged on the upper surface of the supporting platform 1, a hinge mechanism 22 is fixedly arranged on the upper surface of the supporting platform 1, a suspension arm 4 is fixedly arranged on the inner wall of the hinge mechanism 22, two hoisting assemblies 5 are arranged on the upper surface of the supporting platform 1, and an anti-winding assembly 6 is arranged on the upper surface of the hoisting assemblies 5;
The anti-winding assembly 6 comprises a fixed plate 61, a reciprocating screw 62 is rotatably arranged on the inner wall of the fixed plate 61, a dredging wheel 63 is arranged on the outer surface of the reciprocating screw 62 in a threaded manner, one end of the reciprocating screw 62 extends out of the side wall of the fixed plate 61, a first toothed sprocket 64 is fixedly arranged at one end of the reciprocating screw 62, a toothed chain 65 is arranged on the outer surface of the first toothed sprocket 64 in a meshed manner, and a second toothed sprocket 66 is arranged on one end of the toothed chain 65 in a meshed manner.
The specific examples are: the second toothed sprocket 66 is driven to rotate along with the rotation of the winding post 53, the first toothed sprocket 64 drives the reciprocating screw 62 to rotate on the inner wall of the fixed plate 61 under the transmission of the toothed chain 65, and the dredging wheel 63 is driven to move back and forth through the threads on the outer surface along with the rotation of the reciprocating screw 62, so that the steel rope 16 is uniformly wound on the winding post 53 and unwound from the winding post 53 when the steel rope 16 is wound and unwound.
The hoist assembly 5 includes backup pad 51, the upper surface of backup pad 51 and the lower fixed surface of fixed plate 61 are connected, fixed mounting has mounting cup 52 on the lateral wall of backup pad 51, fixed mounting has driving motor on the inner wall of mounting cup 52, and driving motor's output fixed mounting has winding post 53, winding post 53's one end extends to the lateral wall of backup pad 51 and with the lateral wall fixed connection of second toothed sprocket 66, rotate on the inner wall of frame 2 and install support frame 3, the one end and the upper surface fixed connection of supporting platform 1 of support frame 3, the upper surface fixed mounting of frame 2 has mounting panel 21, fixed mounting has rope connecting piece 20 on the lateral wall of mounting panel 21, rotate through the pivot on the inside wall of frame 2 and install fixed pulley 12, fixed mounting has solid fixed ring 11 on the lateral wall of frame 2.
The specific examples are: the supporting platform 1 slides on the inner ring track and the outer ring track of the upper surface of the gas holder through the travelling wheel 10 and the rail wheel 19, so that the position of the whole lifting device is adjusted, a driving motor in the mounting cover 52 drives the winding column 53 to rotate on the inner wall of the supporting plate 51, the winding column 53 winds and unwinds the steel rope 16, the steel rope 16 passes through the fixed pulley 12 during winding and unwinding, then passes through the first pulley 14, and under the condition that one end of the steel rope 16 is fixed by the fixed ring 11, the suspension arm 4 rotates on the hinge mechanism 22 under the action of the first pulley 14, so that the angle between the suspension arm 4 and the supporting platform 1 is adjusted.
The monitoring mechanism 13 is fixedly mounted on the side wall of the suspension arm 4, the first pulley 14 and the second pulley 15 are respectively rotatably mounted on the inner wall of the suspension arm 4 through rotating shafts, the hoisting assembly 5 is respectively a hoisting winch and a variable amplitude winch, the steel rope 16 is fixedly mounted on the inner wall of the fixed ring 11, one end of the steel rope 16 bypasses the outer surface of the first pulley 14 and the outer surface of the fixed pulley 12 and is fixedly connected with the outer surface of a winding column 53 in the variable amplitude hoisting assembly 5, the lifting rope 17 is slidably mounted on the outer surface of the second pulley 15, a lifting hook 18 is fixedly mounted at one end of the lifting rope 17, and the other end of the lifting rope 17 is fixedly connected with the outer surface of the winding column 53 in the hoisting assembly 5.
The specific examples are: the state of the suspension arm 4 can be detected by the monitoring mechanism 13 in the adjusting process of the suspension arm 4, after the suspension arm 4 is adjusted to a proper position, the lifting hook 18 is fixed with the plate, the winding column 53 in the hoisting assembly 5 is lifted to wind the lifting rope 17, at the moment, the lifting rope 17 is uniformly wound on the winding column 53 under the action of the anti-winding assembly 6 through the second pulley 15, and meanwhile, the plate is lifted through the lifting hook 18.
The lower surface of the supporting platform 1 is rotatably provided with a rail wheel 19 through a rotating shaft, the running wheel 10 is positioned on an inner ring rail, and the rail wheel 19 is positioned on an outer ring rail.
The specific examples are: the position of the lifting device is adjusted by sliding the travelling wheels 10 and the rail wheels 19 on the inner ring rail and the outer ring rail respectively, and then the plate is put down by the same method.
The utility model also discloses a use method of the gas tank top hoisting system, which comprises the following steps:
S1, a supporting platform 1 slides on an inner ring track and an outer ring track on the upper surface of a gas cabinet through a travelling wheel 10 and a rail wheel 19, so that the position of the whole hoisting equipment is adjusted, a driving motor in a mounting cover 52 drives a winding column 53 to rotate on the inner wall of a supporting plate 51, the winding column 53 winds and unwinds a steel rope 16, the steel rope 16 passes through a fixed pulley 12 when being wound and unwound, then passes through a first pulley 14, and under the condition that one end of the steel rope 16 is fixed by a fixed ring 11, a suspension arm 4 rotates on a hinge mechanism 22 under the action of the first pulley 14, so that the angle between the suspension arm 4 and the supporting platform 1 is adjusted;
S2, driving a second toothed chain wheel 66 to rotate along with the rotation of the winding column 53, driving a reciprocating screw rod 62 to rotate on the inner wall of a fixed plate 61 by a first toothed chain wheel 64 under the transmission of a toothed chain 65, and enabling a dredging wheel 63 to move back and forth along with the rotation of the reciprocating screw rod 62 through threads on the outer surface, so that the steel rope 16 is uniformly wound on the winding column 53 and loosened from the winding column 53 when the steel rope 16 is wound and unwound, and the state of the suspension arm 4 is detected by a monitoring mechanism 13 in the adjusting process of the suspension arm 4;
S3, after the suspension arm 4 is adjusted to a proper position, fixing the lifting hook 18 and the plate, lifting the winding column 53 in the winding assembly 5 to wind the lifting rope 17, uniformly winding the lifting rope 17 on the winding column 53 through the second pulley 15 under the action of the anti-winding assembly 6, and simultaneously lifting the plate through the lifting hook 18;
S4, the position of the hoisting equipment is adjusted by sliding the travelling wheels 10 and the rail wheels 19 on the inner ring rail and the outer ring rail respectively, and then the plate is put down by the same method.
Working principle: the supporting platform 1 slides on the inner ring track and the outer ring track on the upper surface of the gas cabinet through the travelling wheel 10 and the track wheel 19, so that the position of the whole hoisting device is adjusted, a driving motor in the mounting cover 52 drives the winding column 53 to rotate on the inner wall of the supporting plate 51, the winding column 53 winds and unwinds the steel rope 16, the steel rope 16 passes through the fixed pulley 12 during winding and unwinding, then passes through the first pulley 14, under the condition that one end of the steel rope 16 is fixed by the fixed ring 11, the suspension arm 4 rotates on the hinge mechanism 22 under the action of the first pulley 14, the angle between the suspension arm 4 and the supporting platform 1 is adjusted, the second toothed sprocket 66 is driven to rotate along with the rotation of the winding column 53, the first toothed sprocket 64 drives the reciprocating screw 62 to rotate on the inner wall of the fixed plate 61 under the transmission of the toothed chain 65, the dredging wheel 63 is moved back and forth through threads on the outer surface along with the rotation of the reciprocating screw 62, so that the steel rope 16 is uniformly wound on the winding column 53 and loosened from the winding column 53 when the steel rope 16 is wound and unwound, the monitoring mechanism 13 of the suspension arm 4 detects the state of the suspension arm 4 in the adjusting process, after the suspension arm 4 is adjusted to a proper position, the lifting hook 18 is fixed with a plate, the winding column 53 in the hoisting assembly 5 is lifted to wind the lifting rope 17, at the moment, the lifting rope 17 is uniformly wound on the winding column 53 through the second pulley 15 under the action of the anti-winding assembly 6, the plate is lifted through the lifting hook 18, then the position of the lifting device is adjusted through sliding of the running wheel 10 and the track wheel 19 on the inner ring track and the outer ring track respectively, and then the plate is put down through the same method.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (9)
1. The utility model provides a gas tank top hoisting system, includes supporting platform (1), the upper surface fixed mounting of supporting platform (1) has frame (2), the upper surface fixed mounting of supporting platform (1) has hinge mechanism (22), the inner wall fixed mounting of hinge mechanism (22) has davit (4), its characterized in that: the upper surface of the supporting platform (1) is provided with two hoisting assemblies (5), and the upper surface of each hoisting assembly (5) is provided with an anti-winding assembly (6);
The anti-winding assembly (6) comprises a fixed plate (61), a reciprocating screw (62) is rotatably arranged on the inner wall of the fixed plate (61), a dredging wheel (63) is arranged on the outer surface of the reciprocating screw (62) in a threaded manner, and one end of the reciprocating screw (62) extends out of the side wall of the fixed plate (61).
2. The gas tank top hoisting system according to claim 1, wherein a first toothed sprocket (64) is fixedly installed at one end of the reciprocating screw (62), a toothed chain (65) is installed on the outer surface of the first toothed sprocket (64) in a meshed mode, and a second toothed sprocket (66) is installed on one end of the toothed chain (65) in a meshed mode.
3. The gas tank top hoisting system according to claim 2, wherein the hoisting assembly (5) comprises a supporting plate (51), the upper surface of the supporting plate (51) is fixedly connected with the lower surface of a fixed plate (61), a mounting cover (52) is fixedly installed on the side wall of the supporting plate (51), a driving motor is fixedly installed on the inner wall of the mounting cover (52), a winding column (53) is fixedly installed at the output end of the driving motor, and one end of the winding column (53) extends out of the side wall of the supporting plate (51) and is fixedly connected with the side wall of a second toothed sprocket (66).
4. A gas tank top hoisting system according to claim 3, characterized in that the inner wall of the frame (2) is rotatably provided with a supporting frame (3), one end of the supporting frame (3) is fixedly connected with the upper surface of the supporting platform (1), the upper surface of the frame (2) is fixedly provided with a mounting plate (21), and the side wall of the mounting plate (21) is fixedly provided with a rope driving connecting piece (20).
5. The gas tank top hoisting system according to claim 4, wherein a fixed pulley (12) is rotatably mounted on the inner side wall of the frame (2) through a rotating shaft, and a fixed ring (11) is fixedly mounted on the side wall of the frame (2).
6. The gas tank top hoisting system according to claim 5, wherein a monitoring mechanism (13) is fixedly installed on the side wall of the suspension arm (4), a first pulley (14) and a second pulley (15) are respectively installed on the inner wall of the suspension arm (4) in a rotating mode through a rotating shaft, and the hoisting assembly (5) is respectively a hoisting winch and a variable amplitude winch.
7. The gas tank top hoisting system according to claim 6, wherein a steel rope (16) is fixedly installed on the inner wall of the fixed ring (11), one end of the steel rope (16) bypasses the outer surface of the first pulley (14) and is fixedly connected with the outer surface of the fixed pulley (12) and the outer surface of a winding column (53) in the amplitude-variable winding assembly (5), a lifting rope (17) is slidably installed on the outer surface of the second pulley (15), a lifting hook (18) is fixedly installed at one end of the lifting rope (17), and the other end of the lifting rope (17) is fixedly connected with the outer surface of the winding column (53) in the lifting winding assembly (5).
8. The gas tank top hoisting system according to claim 7, wherein a positioning plate is fixedly arranged on the upper surface of the supporting platform (1), a movable rod (7) is rotatably arranged on the side wall of the positioning plate through a rotating shaft, a fixed sleeve (8) is fixedly arranged at one end of the movable rod (7), a lifting rod (9) is fixedly arranged on the inner wall of the fixed sleeve (8), and a travelling wheel (10) is fixedly arranged at one end of the lifting rod (9).
9. The gas tank top hoisting system according to claim 8, wherein the lower surface of the supporting platform (1) is rotatably provided with a rail wheel (19) through a rotating shaft, the running wheel (10) is located on an inner ring rail, and the rail wheel (19) is located on an outer ring rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323049506.5U CN221319038U (en) | 2023-11-13 | 2023-11-13 | Gas tank top hoisting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323049506.5U CN221319038U (en) | 2023-11-13 | 2023-11-13 | Gas tank top hoisting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221319038U true CN221319038U (en) | 2024-07-12 |
Family
ID=91807367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323049506.5U Active CN221319038U (en) | 2023-11-13 | 2023-11-13 | Gas tank top hoisting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221319038U (en) |
-
2023
- 2023-11-13 CN CN202323049506.5U patent/CN221319038U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102425145A (en) | Offshore wind turbine installation platform and hoisting device thereof | |
| CN106865422A (en) | A kind of folded truss arm hanging device for installing maintenance of wind powered generator group | |
| CN117361345A (en) | Gas tank top hoisting system and hoisting method | |
| CN221319038U (en) | Gas tank top hoisting system | |
| CN114084807A (en) | Tubular pile vacuum chuck crane and using method thereof | |
| CN219860254U (en) | Bridge crane safety warning device | |
| CN209554679U (en) | A kind of high efficiency cantilever crane | |
| CN209778050U (en) | Device capable of horizontally moving and adjusting aerial posture of blade | |
| CN210764024U (en) | Hoisting device | |
| CN2488892Y (en) | Small cart with self loading tower type machine of varying size in revolving down style | |
| CN210286537U (en) | Four-point crane for hoisting bin cover of transport ship | |
| CN219174067U (en) | Electric gantry crane | |
| CN2057658U (en) | Self-lifting type crane | |
| CN113666274A (en) | A kind of building intelligent lifting equipment | |
| CN218507351U (en) | Hoisting mechanism for freight container | |
| CN220976380U (en) | Auxiliary hoisting device for crane on tower | |
| CN220926120U (en) | Pulley block load reducing device for tower crane | |
| CN220334593U (en) | Pulley type cantilever crane | |
| CN117049408B (en) | Tower crane system for wind generating set | |
| CN218491328U (en) | Guide groove type cantilever crane | |
| CN216764111U (en) | Hoisting device for bridge installation | |
| CN218595970U (en) | Wind-powered electricity generation hoist and mount arm | |
| CN220471494U (en) | Top-drive type lifting rotary light suspender | |
| CN221140972U (en) | Anti-falling type pipeline elevator for building installation engineering | |
| CN221397025U (en) | Wind power crane without counterweight |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |