CN219906775U - Hoisting portal frame for mechanical engineering - Google Patents
Hoisting portal frame for mechanical engineering Download PDFInfo
- Publication number
- CN219906775U CN219906775U CN202321125906.7U CN202321125906U CN219906775U CN 219906775 U CN219906775 U CN 219906775U CN 202321125906 U CN202321125906 U CN 202321125906U CN 219906775 U CN219906775 U CN 219906775U
- Authority
- CN
- China
- Prior art keywords
- hoisting
- supporting
- rods
- shaped sliding
- groups
- 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
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
The utility model relates to the technical field of hoisting equipment, in particular to a hoisting portal frame for mechanical engineering, which supports during hoisting, improves the stability during hoisting, adjusts the hoisting position, improves the convenience during use and improves the flexibility of equipment; the device comprises two bases and two groups of moving wheels, wherein the bottom ends of the bases are symmetrically provided with two supporting legs, and the two groups of moving wheels are respectively and rotatably arranged on the supporting legs to drive the bases to move; still include altitude mixture control mechanism, supporting mechanism, adjustment mechanism and hoisting mechanism, altitude mixture control mechanism includes two branches, two hydraulic telescoping rods, two telescopic links and two sets of support diagonal bars, and altitude mixture control mechanism installs the top at the base, and adjustment mechanism includes back timber, T shape slider, threaded rod and driving motor, and adjustment mechanism installs on altitude mixture control mechanism's top, and hoisting mechanism installs on adjustment mechanism, and supporting mechanism installs the inside at the base.
Description
Technical Field
The utility model relates to the technical field of hoisting equipment, in particular to a hoisting portal frame for mechanical engineering.
Background
The novel small-sized lifting portal frame is developed according to the requirements of daily production, equipment conveying, warehouse in and out, heavy equipment lifting and maintenance and material transportation of middle and small factories, and is suitable for manufacturing molds, steam repair factories, mines, civil construction sites and lifting field platforms. According to the technical scheme, the portal frame for highway engineering construction transportation is provided by the prior art publication No. CN209052305U and comprises a fixing plate and a top frame, wherein the fixing plate is vertically arranged on the outer walls of the lower ends of the left side and the right side of the top frame, the fixing plate is fixedly connected with the top frame through nuts, a transportation protection device is added on the portal frame for highway engineering construction transportation and is divided into two identical two halves, the two identical two halves are respectively arranged on the inner opposite walls of the middle and lower sections of the two main supports, T-shaped sliding grooves are respectively arranged in the opposite interiors of the two main supports, and the T-shaped sliding blocks at the outer ends of the transportation protection devices of the two halves are fixedly arranged in the T-shaped sliding grooves, so that the transportation protection device can be adjusted in a vertical sliding mode, and equipment lifted by a lifting motor can be effectively protected from shaking in the transportation process to cause damage. But do not support equipment when lifting by crane, universal removal wheel is easy to remove, and the danger is higher, can not adjust the position of lifting by crane, and the result of use is not good.
Disclosure of Invention
In order to solve the technical problems, the utility model provides the lifting portal frame for mechanical engineering, which is used for supporting during lifting, improving the stability during lifting, adjusting the lifting position, improving the convenience during use and improving the flexibility of equipment.
The utility model relates to a hoisting portal frame for mechanical engineering, which comprises two bases and two groups of moving wheels, wherein the bottom ends of the bases are symmetrically provided with two supporting legs, and the two groups of moving wheels are respectively and rotatably arranged on the supporting legs to drive the bases to move; the lifting mechanism is arranged on the adjusting mechanism, and the supporting mechanism is arranged in the base; through two sets of movable wheel drive equipment free movement, move to lift by crane the position after, support the base through supporting mechanism, make movable wheel and ground break away from the contact, support equipment, stability when improving hoist and mount can be to lifting by crane the altitude mixture control through altitude mixture control mechanism, be convenient for hoist and mount highly different material, can be to lifting by crane the position through adjustment mechanism and adjust, convenience when improving the use, the flexibility of improvement equipment.
Preferably, the height adjusting mechanism comprises two supporting rods, two hydraulic telescopic rods, two telescopic rods and two groups of supporting inclined rods, wherein the two supporting rods are respectively and fixedly arranged at the top ends of the two bases, a sliding groove is formed in the top of each supporting rod, the two telescopic rods are respectively and slidably arranged in the sliding groove, the hydraulic telescopic rods are respectively and internally arranged in the sliding grooves, the top ends of the hydraulic telescopic rods are fixedly connected with the bottom ends of the telescopic rods, the middle parts of the side walls of the front end and the rear end of each supporting rod are respectively and fixedly provided with the supporting inclined rods, the other ends of the supporting inclined rods are respectively and fixedly connected with the top ends of the bases, and the adjusting mechanism is arranged at the top ends of the telescopic rods; starting the hydraulic telescopic link, can adjusting the extension length of telescopic link on the branch top to adjust hoist and mount height, strengthen supporting branch through supporting the diagonal bar, improve the security, be convenient for hoist and mount highly different material, improve application scope, can reduce the volume of equipment, be convenient for transport.
Preferably, the adjusting mechanism comprises a top beam, T-shaped sliding blocks, a threaded rod and a driving motor, wherein the left end and the right end of the top beam are respectively and fixedly arranged at the top ends of the two telescopic rods, the bottom end of the top beam is provided with a T-shaped sliding groove, the T-shaped sliding blocks are slidably arranged in the T-shaped sliding grooves, the threaded rod is rotatably arranged in the T-shaped sliding grooves, the T-shaped sliding blocks are spirally arranged on the outer wall of the threaded rod, the right end of the threaded rod passes through the T-shaped sliding grooves and is fixedly connected with the output end of the driving motor, the driving motor is fixedly arranged on the right side wall of the top beam, and the lifting mechanism is arranged at the bottom end of the T-shaped sliding blocks; and the driving motor is started, the driving motor drives the threaded rod to rotate, and the threaded rod rotates to drive the T-shaped sliding block to move in the T-shaped sliding groove, so that the lifting position is adjusted, the working range is improved, and the flexibility of equipment is improved.
Preferably, the hoisting mechanism comprises a lifting box, a winding disc, a partition plate, a gear motor, steel wires and a lifting hook, wherein the top end of the lifting box is fixedly arranged at the bottom end of a T-shaped sliding block, the partition plate is fixedly arranged in the middle of the winding disc, the winding disc is rotatably arranged between the inner side wall of the lifting box and the left side wall of the partition plate, the gear motor is fixedly arranged on the right side wall of the partition plate, the output end of the gear motor penetrates through the partition plate to be connected with the winding disc, the steel wires are wound on the winding disc, an opening is formed in the bottom end of the lifting box, and the steel wires penetrate through the opening to be connected with the lifting hook; the lifting hook is connected with the material, the gear motor is started, the gear motor drives the winding disc to rotate, the winding disc rotates to retract and release the steel wire, the material can be lifted and transported, the service efficiency of the equipment is improved, and the working pressure of workers is reduced.
Preferably, the supporting mechanism comprises two double-output-shaft motors, two groups of sleeves, two groups of screw rods, two groups of fixed blocks, two groups of second hydraulic telescopic rods and two groups of supporting plates, the inside of the base is provided with mounting grooves, the two double-output-shaft motors are respectively and fixedly arranged in the mounting grooves, the sleeve is respectively and fixedly arranged at the output shafts at the two ends of the double-output-shaft motors, the screw rods are screwed in the sleeves, the screw rods slide to penetrate through the front end and the rear end of the mounting grooves and fixedly arranged with the fixed blocks, the second hydraulic telescopic rods are arranged on the fixed blocks, and the supporting plates are fixedly arranged at the bottom ends of the second hydraulic telescopic rods; after moving to the hoisting position, the double-output-shaft motor is started, the double-output-shaft motor drives the sleeve to rotate, so that the screw rod stretches out in the sleeve, the screw rod drives the fixed block to stretch out at the front end and the rear end of the base, the second hydraulic telescopic rod is started simultaneously, the second hydraulic telescopic rod drives the supporting plate to move downwards to be in contact with the ground, the movable wheel is separated from the ground, stability during hoisting is guaranteed, and safety is improved.
Preferably, the device also comprises two hanging rings and a tensioning cable, wherein the two hanging rings are respectively and fixedly arranged at one ends of the two bases opposite to each other, hooks are arranged at two ends of the tensioning cable, and the two ends of the tensioning cable are connected with the hanging rings through the hooks; when hoisting, the hooks at two ends of the tensioning cable are connected with the hanging rings, the two bases are tensioned, the two bases are prevented from moving to two sides due to downward pressing of the top beam, equipment damage is caused, and practicability is improved.
Compared with the prior art, the utility model has the beneficial effects that: through two sets of movable wheel drive equipment free movement, move to lift by crane the position after, support the base through supporting mechanism, make movable wheel and ground break away from the contact, support equipment, stability when improving hoist and mount can be to lifting by crane the altitude mixture control through altitude mixture control mechanism, be convenient for hoist and mount highly different material, can be to lifting by crane the position through adjustment mechanism and adjust, convenience when improving the use, the flexibility of improvement equipment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the front view of the present utility model;
FIG. 3 is a schematic view of a front cross-sectional structure of the present utility model;
FIG. 4 is a schematic view of a left-hand cross-sectional structure of the present utility model;
FIG. 5 is a schematic view of the bottom structure of the present utility model;
the reference numerals in the drawings: 1. a base; 2. a moving wheel; 3. a support rod; 4. a hydraulic telescopic rod; 5. a telescopic rod; 6. supporting the diagonal rod; 7. a top beam; 8. a T-shaped slider; 9. a threaded rod; 10. a driving motor; 11. a jack box; 12. a winding disc; 13. a partition plate; 14. a speed reducing motor; 15. a steel wire; 16. a lifting hook; 17. a double output shaft motor; 18. a sleeve; 19. a screw rod; 20. a fixed block; 21. a second hydraulic telescoping rod; 22. a support plate; 23. hanging rings; 24. the cable is tensioned.
Detailed Description
In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. This utility model may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
As shown in fig. 1, 2, 4 and 5, two supporting legs are symmetrically arranged at the bottom end of a base 1, two groups of moving wheels 2 are respectively and rotatably arranged on the supporting legs to drive the base 1 to move, two supporting rods 3 are respectively and fixedly arranged at the top ends of the two bases 1, a sliding groove is formed at the top of each supporting rod 3, two telescopic rods 5 are respectively and slidably arranged in the sliding groove, a hydraulic telescopic rod 4 is respectively and fixedly connected with the top ends of the hydraulic telescopic rods 4, supporting diagonal rods 6 are respectively and fixedly arranged in the middle parts of the side walls of the front end and the rear end of each supporting rod 3, the other ends of the supporting diagonal rods 6 are respectively and fixedly connected with the top ends of the base 1, the left end and the right end of a top beam 7 are respectively and fixedly arranged at the top ends of the two telescopic rods 5, a T-shaped sliding groove is formed at the bottom end of the top beam 7, a T-shaped sliding block 8 is slidably arranged in the T-shaped sliding groove, the threaded rod 9 is rotatably arranged in the T-shaped sliding groove, the T-shaped sliding block 8 is screwed on the outer wall of the threaded rod 9, the right end of the threaded rod 9 passes through the T-shaped sliding groove and is fixedly connected with the output end of the driving motor 10, the driving motor 10 is fixedly arranged on the right side wall of the top beam 7, the lifting mechanism is arranged at the bottom end of the T-shaped sliding block 8, the inside of the base 1 is provided with mounting grooves, the two double-output-shaft motors 17 are respectively fixedly arranged in the mounting grooves, the output shafts at the two ends of the double-output-shaft motors 17 are respectively fixedly provided with a sleeve 18, a screw rod 19 is screwed in the sleeve 18, the screw rod 19 penetrates through the front end and the rear end of the mounting groove in a sliding manner, a fixed block 20 is fixedly arranged, a second hydraulic telescopic rod 21 is arranged on the fixed block 20, and the bottom end of the second hydraulic telescopic rod 21 is fixedly provided with a supporting plate 22;
the two groups of movable wheels 2 drive equipment to freely move, after moving to a lifting position, the double-output shaft motor 17 is started, the double-output shaft motor 17 drives the sleeve 18 to rotate, so that the screw rod 19 stretches out in the sleeve 18, the screw rod 19 drives the fixed block 20 to stretch out at the front end and the rear end of the base 1, meanwhile, the second hydraulic telescopic rod 21 is started, the second hydraulic telescopic rod 21 drives the supporting plate 22 to move downwards to be in contact with the ground, the movable wheels 2 are separated from the ground, stability during lifting is guaranteed, safety is improved, the hydraulic telescopic rod 4 is started, the stretching length of the telescopic rod 5 at the top end of the supporting rod 3 can be adjusted, lifting height is adjusted, supporting of the supporting rod 3 is enhanced through the supporting inclined rod 6, safety is improved, materials with different heights are convenient to lift, the application range is improved, the size of the equipment can be reduced, transportation is facilitated, the driving motor 10 is started, the driving motor 10 drives the threaded rod 9 to rotate, the T-shaped sliding block 8 is driven to move in the T-shaped sliding groove, the lifting position is adjusted, the working range is improved, and the flexibility of the equipment is improved.
As shown in fig. 2 and 3, the hoisting mechanism comprises a lifting box 11, a winding disc 12, a partition plate 13, a gear motor 14, a steel wire 15 and a lifting hook 16, wherein the top end of the lifting box 11 is fixedly arranged at the bottom end of a T-shaped sliding block 8, the partition plate 13 is fixedly arranged in the middle of the winding disc 12, the winding disc 12 is rotatably arranged between the inner side wall of the lifting box 11 and the left side wall of the partition plate 13, the gear motor 14 is fixedly arranged on the right side wall of the partition plate 13, the output end of the gear motor 14 passes through the partition plate 13 to be connected with the winding disc 12, the steel wire 15 is wound on the winding disc 12, an opening is formed at the bottom end of the lifting box 11, the steel wire 15 passes through the opening to be connected with the lifting hook 16, two hanging rings 23 and a tensioning cable 24 are respectively and fixedly arranged at the opposite ends of the two bases 1, hooks are respectively arranged at two ends of the tensioning cable 24, and two ends of the tensioning cable 24 are connected with the hanging rings 23 through the hooks;
the lifting hook 16 is connected with materials, the gear motor 14 is started, the gear motor 14 drives the winding disc 12 to rotate, the winding disc 12 rotates to retract and release the steel wires 15, the materials can be lifted and transported, the service efficiency of equipment is improved, working pressure of workers is reduced, when the lifting is carried out, hooks at two ends of the tensioning cable 24 are connected with the hanging rings 23, the two bases 1 are tensioned, the two bases 1 are prevented from being moved to two sides due to downward pressing of the top beam 7, equipment damage is caused, and practicability is improved.
As shown in fig. 1 to 5, when the mechanical engineering lifting portal frame disclosed by the utility model works, firstly, equipment is moved to a lifting position by a moving wheel 2, then a double-output-shaft motor 17 is started, the double-output-shaft motor 17 drives a sleeve 18 to rotate, so that a screw rod 19 stretches out in the sleeve 18, the screw rod 19 drives a fixed block 20 to stretch out at the front end and the rear end of a base 1, meanwhile, a second hydraulic telescopic rod 21 is started, the second hydraulic telescopic rod 21 drives a supporting plate 22 to move downwards to be in contact with the ground, the moving wheel 2 is separated from the ground, then, a hydraulic telescopic rod 4 is started, the stretching length of the telescopic rod 5 at the top end of a supporting rod 3 can be adjusted, so that the lifting height is adjusted, a driving motor 10 is started, the driving motor 10 drives a threaded rod 9 to rotate, a T-shaped sliding block 8 is driven to move in a T-shaped sliding groove, so that the lifting position is adjusted, a lifting hook 16 is connected with materials, a speed reducing motor 14 is started, the speed reducing motor 14 drives a winding disc 12 to rotate, the winding disc 12 is wound and the steel wire 15 is wound and released, two ends of a tensioning cable 24 are connected with a hanging ring 23, and when lifting is lifted, the two bases 1 are tensioned, and lifted and transported.
The driving motor 10, the gear motor 14 and the double-output shaft motor 17 of the hoisting portal frame for mechanical engineering are purchased in the market, and can be installed and operated by a person skilled in the art according to the attached use instruction without creative labor of the person skilled in the art.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.
Claims (6)
1. The lifting portal frame for the mechanical engineering comprises two bases (1) and two groups of moving wheels (2), wherein two supporting legs are symmetrically arranged at the bottom end of the base (1), and the two groups of moving wheels (2) are respectively and rotatably arranged on the supporting legs to drive the base (1) to move; the lifting device is characterized by further comprising a height adjusting mechanism, a supporting mechanism, an adjusting mechanism and a lifting mechanism, wherein the height adjusting mechanism is arranged at the top end of the base (1), the adjusting mechanism is arranged at the top end of the height adjusting mechanism, the lifting mechanism is arranged on the adjusting mechanism, and the supporting mechanism is arranged in the base (1).
2. The hoisting portal frame for mechanical engineering according to claim 1, wherein the height adjusting mechanism comprises two supporting rods (3), two hydraulic telescopic rods (4), two telescopic rods (5) and two groups of supporting diagonal rods (6), the two supporting rods (3) are respectively and fixedly installed at the top ends of the two bases (1), the tops of the supporting rods (3) are provided with sliding grooves, the two telescopic rods (5) are respectively and slidably installed in the sliding grooves, the hydraulic telescopic rods (4) are respectively installed in the sliding grooves, the top ends of the hydraulic telescopic rods (4) are fixedly connected with the bottom ends of the telescopic rods (5), the middle parts of the side walls of the front end and the rear end of the supporting rods (3) are respectively and fixedly installed with the supporting diagonal rods (6), the other ends of the supporting diagonal rods (6) are respectively and fixedly connected with the top ends of the bases (1), and the adjusting mechanism is installed at the top ends of the telescopic rods (5).
3. The hoisting portal frame for mechanical engineering according to claim 2, wherein the adjusting mechanism comprises a top beam (7), a T-shaped sliding block (8), a threaded rod (9) and a driving motor (10), the left end and the right end of the top beam (7) are respectively and fixedly installed at the top ends of the two telescopic rods (5), the bottom end of the top beam (7) is provided with a T-shaped sliding groove, the T-shaped sliding block (8) is slidably installed in the T-shaped sliding groove, the threaded rod (9) is rotatably installed in the T-shaped sliding groove, the T-shaped sliding block (8) is screwed on the outer wall of the threaded rod (9), the right end of the threaded rod (9) penetrates through the T-shaped sliding groove and is fixedly connected with the output end of the driving motor (10), the driving motor (10) is fixedly installed on the right side wall of the top beam (7), and the hoisting mechanism is installed at the bottom end of the T-shaped sliding block (8).
4. A hoisting portal frame for mechanical engineering according to claim 3, characterized in that the hoisting mechanism comprises a hoisting box (11), a winding disc (12), a partition plate (13), a gear motor (14), a steel wire (15) and a lifting hook (16), wherein the top end of the hoisting box (11) is fixedly arranged at the bottom end of the T-shaped sliding block (8), the partition plate (13) is fixedly arranged in the middle of the winding disc (12), the winding disc (12) is rotatably arranged between the inner side wall of the hoisting box (11) and the left side wall of the partition plate (13), the gear motor (14) is fixedly arranged on the right side wall of the partition plate (13), the output end of the gear motor (14) penetrates through the partition plate (13) to be connected with the winding disc (12), the steel wire (15) is wound on the winding disc (12), the bottom end of the hoisting box (11) is provided with an opening, and the steel wire (15) penetrates through the opening to be connected with the lifting hook (16).
5. The hoisting portal frame for mechanical engineering according to claim 1, wherein the supporting mechanism comprises two double-output-shaft motors (17), two groups of sleeves (18), two groups of screw rods (19), two groups of fixing blocks (20), two groups of second hydraulic telescopic rods (21) and two groups of supporting plates (22), the inside of the base (1) is provided with mounting grooves, the two double-output-shaft motors (17) are respectively and fixedly mounted in the mounting grooves, the sleeve (18) is respectively and fixedly mounted at two output shafts at two ends of the double-output-shaft motors (17), screw rods (19) are screwed in the sleeves (18), the screw rods (19) penetrate through the front end and the rear end of the mounting grooves in a sliding mode, the fixing blocks (20) are fixedly mounted, the second hydraulic telescopic rods (21) are mounted on the fixing blocks (20), and the supporting plates (22) are fixedly mounted at the bottom ends of the second hydraulic telescopic rods (21).
6. The hoisting portal frame for mechanical engineering according to claim 1, further comprising two hanging rings (23) and a tensioning cable (24), wherein the two hanging rings (23) are respectively and fixedly installed at opposite ends of the two bases (1), hooks are arranged at two ends of the tensioning cable (24), and two ends of the tensioning cable (24) are connected with the hanging rings (23) through the hooks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321125906.7U CN219906775U (en) | 2023-05-11 | 2023-05-11 | Hoisting portal frame for mechanical engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321125906.7U CN219906775U (en) | 2023-05-11 | 2023-05-11 | Hoisting portal frame for mechanical engineering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219906775U true CN219906775U (en) | 2023-10-27 |
Family
ID=88466052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321125906.7U Active CN219906775U (en) | 2023-05-11 | 2023-05-11 | Hoisting portal frame for mechanical engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219906775U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118771178A (en) * | 2024-07-03 | 2024-10-15 | 合肥市春华起重机械有限公司 | A mechanical arm hoisting equipment for crane production |
-
2023
- 2023-05-11 CN CN202321125906.7U patent/CN219906775U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118771178A (en) * | 2024-07-03 | 2024-10-15 | 合肥市春华起重机械有限公司 | A mechanical arm hoisting equipment for crane production |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219906775U (en) | Hoisting portal frame for mechanical engineering | |
| CN117303197A (en) | Movable hanging bracket | |
| CN108792999A (en) | Automate upper mold grabbing device | |
| CN205159918U (en) | Transmission line elevating gear | |
| CN113735012B (en) | A installation device that is arranged in factory building construction high altitude structure | |
| CN108706471A (en) | A kind of large-sized gantry hangs the method for dismounting of rigid leg | |
| CN102582669A (en) | Striding type hand truck | |
| CN213802631U (en) | Portal frame is used in construction of municipal administration road bridge | |
| CN2755282Y (en) | Apparatus for restoring machines from comprehensive coal face | |
| CN211549703U (en) | A split tunnel construction trolley | |
| CN210048418U (en) | Portable hoisting support is built to bridge | |
| CN113086825B (en) | Concrete pipe pile hoist device | |
| CN220467380U (en) | Lifting device of gantry crane | |
| CN209635797U (en) | Novel large reactor rotates die device | |
| CN218841513U (en) | Auxiliary fixed factory building construction hoisting device | |
| CN213202110U (en) | Mining hydraulic frame formula hoisting accessory | |
| CN211664594U (en) | Movable hoisting equipment | |
| CN222098585U (en) | Silo cleaning machine | |
| CN114920168A (en) | Auxiliary mounting bracket for electric power engineering | |
| CN201200990Y (en) | Platform for shaft-exchanging operation | |
| CN218642353U (en) | Engineering frame for mounting electromechanical equipment | |
| CN114835013B (en) | Small-lifting-distance crane for hoisting template and mold | |
| CN224185816U (en) | Traction lifting type building electromechanical installation operation platform | |
| CN222331405U (en) | Hoisting device for movable combined electrical appliance air chamber | |
| CN221187014U (en) | Precast box girder tensioning trolley |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |