CN215829995U - Construction platform convenient to large-scale factory building construction - Google Patents
Construction platform convenient to large-scale factory building construction Download PDFInfo
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- CN215829995U CN215829995U CN202120702312.2U CN202120702312U CN215829995U CN 215829995 U CN215829995 U CN 215829995U CN 202120702312 U CN202120702312 U CN 202120702312U CN 215829995 U CN215829995 U CN 215829995U
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- 238000010276 construction Methods 0.000 title claims abstract description 55
- 238000009435 building construction Methods 0.000 title claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 244000309464 bull Species 0.000 claims description 8
- 230000003028 elevating effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005286 illumination Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses a construction platform convenient for large-scale factory building construction, which comprises a transverse plate, wherein the top of the transverse plate is fixedly connected with a support column, a fixing mechanism is arranged inside the support column, the bottom of the transverse plate is provided with a lifting mechanism, the surface of the fixing mechanism is movably connected with a connecting plate, the surface of the connecting plate is movably connected with a railing, two ends of the railing are respectively provided with a groove, one side of the connecting plate extends into the groove, the surface of the connecting plate is movably connected with the inside of the groove, one side of the connecting plate is fixedly connected with a first spring, the first spring is fixedly connected with the inner wall of the groove, the top end of the railing is provided with a first through hole, the top of the connecting plate is fixedly connected with a pulling plate, the surface of the pulling plate is movably connected with the inside of the first through hole, and the bottom of the transverse plate is fixedly connected with a vertical plate. The utility model solves the problems that the construction platform has low safety, poor protection effect and the construction personnel can not construct high positions due to the fact that the height can not be adjusted.
Description
Technical Field
The utility model relates to the field of constructional engineering, in particular to a construction table convenient for construction of a large-scale factory building.
Background
The building engineering refers to an engineering entity formed by the construction of various building buildings and their auxiliary facilities and the installation of lines, pipes and equipment matched with them, wherein the building buildings refer to the engineering which has top covers, beams, columns, walls, foundations and can form internal spaces and meet the requirements of people for production, living, study and public activities.
The current construction platform can't carry out effectual protection to construction platform, and constructor probably drops from construction platform, meets accident, and the security is low, also can't adjust the height, leads to constructor can't be under construction to the eminence. Therefore, a construction platform convenient for the construction of a large factory building is required to solve the above problems.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides the construction platform convenient for the construction of the large-scale factory building, which has the advantages that the protection device can be fixed and detached, and the height can be adjusted.
The technical scheme of the utility model is as follows: a construction table convenient for large-scale factory building construction comprises a transverse plate, wherein a support column is fixedly connected to the top of the transverse plate, a fixing mechanism is arranged inside the support column, a lifting mechanism is arranged at the bottom of the transverse plate, a connecting plate is movably connected to the surface of the fixing mechanism, a rail is movably connected to the surface of the connecting plate, grooves are formed in two ends of the rail, one side of the connecting plate extends into the grooves, the surface of the connecting plate is movably connected with the inside of the grooves, a first spring is fixedly connected to one side of the connecting plate, the first spring is fixedly connected with the inner walls of the grooves, a first through hole is formed in the top end of the rail, a pulling plate is fixedly connected to the top of the connecting plate, the surface of the pulling plate is movably connected with the inside of the first through hole, and a vertical plate is fixedly connected to the bottom of the transverse plate;
the fixing mechanism comprises a U-shaped plate, a fixing plate, a first limiting groove, a second spring, a connecting rod, a clamping plate, a first support, a second support and a third support, wherein one side of the U-shaped plate is fixedly connected with one side of a supporting column, one side of the fixing plate is movably connected with the other side of the supporting column, the first limiting groove is formed in the supporting column, one end of the second spring is fixedly connected with one side of the fixing plate, the other end of the second spring is fixedly connected with the inside of the first limiting groove, one end of the connecting rod extends to the outside of the supporting column, one end of the connecting rod is fixedly connected with one side of the fixing plate, one side of the clamping plate is movably connected with the other end of the connecting rod, the surface of one end of the first support is movably connected with the inside of the clamping plate, the first support is movably connected with the inside of the U-shaped plate through a pin shaft, and the other end of the first support is movably connected with the front face of the second support through a pin shaft, the other side of the second support is movably connected with the back of a third support through a pin shaft, the third support is movably connected with the inside of the U-shaped plate through a pin shaft, and the other side of the third support is movably connected with the surface of the connecting plate;
elevating system includes support frame, bottom plate, backup pad, motor, bull stick, gear, threaded rod, kelly and pulley, the inside of support frame and the surperficial swing joint of riser, the both sides of bottom plate all with one side fixed connection of support frame, the bottom of motor and the top fixed connection of bottom plate, the bottom of threaded rod and the top fixed connection of motor, the bottom of backup pad and the top fixed connection of bottom plate, the surface of bull stick extends to the outside of backup pad and through the inside swing joint of pivot and backup pad, the inside of gear is connected with the fixed surface of bull stick, the inside of kelly is connected with the fixed surface of bull stick, the pulley passes through the fixed surface of rim plate and kelly and is connected, the inside swing joint of pulley and second spacing groove.
Pulling a pulling plate, wherein the pulling plate drives a connecting plate to move left and right, the connecting plate can be placed in a U-shaped plate by stretching through a first spring, a fixed plate is pulled, the fixed plate drives a connecting rod to move when moving, the connecting rod drives a clamping plate to move, the clamping plate drives a first support to move towards the right end, the first support drives a second support to move, the second support drives a third support to move, the fixed plate is loosened, the connecting plate can be fixed by rebounding through a second spring, a protection effect can be achieved for constructors, a motor is started, the motor drives a threaded rod to rotate, the threaded rod drives a gear to rotate, the gear drives a rotating rod to rotate, the rotating rod drives a clamping rod to move left and right through a rotating shaft, the clamping rod drives a pulley to lift, the pulley drives a vertical plate to move up and down, the height can be adjusted, and accordingly the constructors can conveniently construct high places, the problem of construction platform security low, the protective effect poor with can't adjust the height and lead to constructor to be unable to be under construction to the eminence is solved.
Utilize fixed establishment, through pulling the fixed plate, can remove the third support, remove through the third support, can fix and dismantle the connecting plate, through setting up the connecting plate, the railing, can play the guard action to the constructor, construction platform security is low has been solved, the poor problem of protective effect, utilize elevating system, through the starter motor, it rotates to drive the threaded rod, the threaded rod drives the gear and rotates, through setting up the riser, can adjust the height of construction platform, can support the diaphragm in the lift process, can be under construction to the eminence, the problem that construction platform can't adjust the height and lead to the constructor can't be under construction to the eminence has been solved, the problem that construction platform can't be adjusted to the height and lead to the constructor can't be under construction to the eminence is solved
In a further technical scheme, the top of the transverse plate is fixedly connected with a non-slip mat, and the non-slip mat is made of rubber.
Through setting up the slipmat, can make the diaphragm have skid-proof effect, prevent that constructor from slipping.
In a further technical scheme, the bottom of diaphragm is provided with the receiver, the front of receiver is articulated through the hinge to have the door plant.
Through setting up the receiver, can accomodate the instrument, make things convenient for the constructor to use.
In a further technical scheme, the top of support column fixedly connected with illumination lamp base, the top fixedly connected with light of illumination lamp base.
Through setting up light and lighting lamp base, can provide luminance at night.
In a further technical scheme, a second limiting groove is formed in the supporting frame, the surface of the vertical plate is movably connected with the inner wall of the second limiting groove, a clamping block is sleeved on the surface of the vertical plate, and the two sides of the clamping block are movably connected with the inner wall of the second limiting groove.
Through setting up second spacing groove and fixture block, and can carry on spacingly to the riser.
In a further technical scheme, the bottom fixedly connected with supporting seat of support frame, the quantity of supporting seat is two.
Through setting up the supporting seat, can support the support frame.
In a further technical scheme, a baffle is fixedly connected to the top of the bottom plate, and the interior of the baffle is movably connected with the surface of the rotating rod through a bearing.
Through setting up the baffle, can carry on spacingly to the gear.
The utility model has the beneficial effects that:
1. according to the construction platform, the fixing mechanism is utilized, the fixing plate can be pulled to move the third support, the third support can be moved, the connecting plate can be fixed and detached, the connecting plate and the railing can be arranged to protect constructors, the problems that the safety of the construction platform is low and the protection effect is poor are solved, the lifting mechanism is utilized, the threaded rod is driven to rotate by the starting motor, the threaded rod drives the gear to rotate, the height of the construction platform can be adjusted by the aid of the vertical plate, the transverse plate can be supported in the lifting process, high-place construction can be achieved, and the problem that the constructors cannot construct high places due to the fact that the height of the construction platform cannot be adjusted is solved.
2. According to the utility model, the anti-slip effect of the transverse plate can be achieved by arranging the anti-slip mat, the construction personnel can be prevented from slipping down, the tools can be stored by arranging the storage box, the use of the construction personnel is facilitated, the illumination lamp and the illuminating lamp base can be arranged, the brightness can be provided at night, the vertical plate can be limited by arranging the second limiting groove and the fixture block, the support frame can be supported by arranging the support seat, and the gear can be limited by arranging the baffle.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a structural cross-sectional view of an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of A of FIG. 2 according to the present invention;
fig. 4 is a plan view of the lifting mechanism of the present invention.
Description of reference numerals:
1. a transverse plate; 2. a support pillar; 3. a fixing mechanism; 31. a U-shaped plate; 32. a fixing plate; 33. a first limit groove; 34. a second spring; 35. a connecting rod; 36. clamping a plate; 37. a first bracket; 38. a second bracket; 39. a third support; 4. a lifting mechanism; 41. a support frame; 42. a base plate; 43. a support plate; 44. a motor; 45. a rotating rod; 46. a gear; 47. a threaded rod; 48. a clamping rod; 49. a pulley; 5. a connecting plate; 6. a railing; 7. a groove; 8. a first spring; 9. a first through hole; 10. pulling a plate; 11. a vertical plate; 12. a non-slip mat; 13. a storage box; 14. a door panel; 15. an illumination base; 16. an illuminating lamp; 17. a second limit groove; 18. a clamping block; 19. a supporting seat; 20. and a baffle plate.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example (b):
as shown in fig. 1-4, a construction platform convenient for large-scale factory building construction comprises a transverse plate 1, a support column 2 is fixedly connected to the top of the transverse plate 1, a fixing mechanism 3 is arranged inside the support column 2, a lifting mechanism 4 is arranged at the bottom of the transverse plate 1, a connecting plate 5 is movably connected to the surface of the fixing mechanism 3, a rail 6 is movably connected to the surface of the connecting plate 5, grooves 7 are respectively formed in two ends of the rail 6, one side of the connecting plate 5 extends into the grooves 7, the surface of the connecting plate 5 is movably connected with the inside of the grooves 7, a first spring 8 is fixedly connected to one side of the connecting plate 5, the first spring 8 is fixedly connected to the inner wall of the grooves 7, a first through hole 9 is formed in the top of the rail 6, a pulling plate 10 is fixedly connected to the top of the connecting plate 5, the surface of the pulling plate 10 is movably connected to the inside of the first through hole 9, and a vertical plate 11 is fixedly connected to the bottom of the transverse plate 1;
the fixing mechanism 3 comprises a U-shaped plate 31, a fixing plate 32, a first limiting groove 33, a second spring 34, a connecting rod 35, a clamping plate 36, a first support 37, a second support 38 and a third support 39, wherein one side of the U-shaped plate 31 is fixedly connected with one side of the supporting column 2, one side of the fixing plate 32 is movably connected with the other side of the supporting column 2, the first limiting groove 33 is formed in the supporting column 2, one end of the second spring 34 is fixedly connected with one side of the fixing plate 32, the other end of the second spring 34 is fixedly connected with the inside of the first limiting groove 33, one end of the connecting rod 35 extends to the outside of the supporting column 2, one end of the connecting rod 35 is fixedly connected with one side of the fixing plate 32, one side of the clamping plate 36 is movably connected with the other end of the connecting rod 35, the surface of one end of the first support 37 is movably connected with the inside of the clamping plate 36, the first support 37 is movably connected with the inside of the U-shaped plate 31 through a pin shaft, the other end of the first support 37 is movably connected with the front surface of the second support 38 through a pin shaft, the other side of the second support 38 is movably connected with the back surface of a third support 39 through a pin shaft, the third support 39 is movably connected with the inside of the U-shaped plate 31 through a pin shaft, and the other side of the third support 39 is movably connected with the surface of the connecting plate 5;
the lifting mechanism 4 comprises a support frame 41, a bottom plate 42, a support plate 43, a motor 44, a rotating rod 45, a gear 46, a threaded rod 47, a clamping rod 48 and a pulley 49, the inside of the support frame 41 is movably connected with the surface of the vertical plate 11, two sides of the bottom plate 42 are fixedly connected with one side of the support frame 41, the bottom of the motor 44 is fixedly connected with the top of the bottom plate 42, the bottom end of the threaded rod 47 is fixedly connected with the top of the motor 44, the bottom of the support plate 43 is fixedly connected with the top of the bottom plate 42, the surface of the rotating rod 45 extends to the outside of the support plate 43 and is movably connected with the inside of the support plate 43 through a rotating shaft, the inside of the gear 46 is fixedly connected with the surface of the rotating rod 45, the inside of the clamping rod 48 is fixedly connected with the surface of the rotating rod 45, the pulley 49 is fixedly connected with the surface of the clamping rod 48 through a wheel disc, and the pulley 49 is movably connected with the inside of the second limit groove 17.
The working principle of the embodiment is as follows: pulling the pulling plate 10, the pulling plate 10 drives the connecting plate 5 to move left and right, the connecting plate 5 can be placed in the U-shaped plate 31 by stretching and contracting through the first spring 8, the fixing plate 32 is pulled, the connecting rod 35 is driven to move when the fixing plate 32 moves, the connecting rod 35 drives the clamping plate 36 to move, the clamping plate 36 drives the first support 37 to move towards the right end, the first support 37 drives the second support 38 to move, the second support 38 drives the third support 39 to move, the fixing plate 32 is loosened, the connecting plate 5 can be fixed by rebounding through the second spring 34, a protection effect can be achieved for constructors, the motor 44 is started, the motor 44 drives the threaded rod 47 to rotate, the threaded rod 47 drives the gear 46 to rotate, the gear 46 drives the rotating rod 45 to rotate, the rotating rod 45 drives the clamping rod 48 to move left and right through the rotating shaft, the clamping rod 48 drives the pulley 49 to lift, the pulley 49 drives the vertical plate 11 to move up and down, can adjust highly to make constructor conveniently be under construction to the eminence, it is low to have solved construction platform security, and the protective effect is poor with can't adjust highly and lead to constructor to be unable to be under construction to the eminence.
Utilize fixed establishment 3, through pulling fixed plate 32, can remove third support 39, remove through third support 39, can fix and dismantle connecting plate 5, through setting up connecting plate 5 and railing 6, can play the guard action to the constructor, construction platform security is low has been solved, the poor problem of protective effect, utilize elevating system 4, through starter motor 44, it rotates to drive threaded rod 47, threaded rod 47 drives gear 46 and rotates, through setting up riser 11, can adjust the height of construction platform, can support diaphragm 1 in the lift in-process, can construct the eminence, the problem that construction platform can't adjust the height and lead to the constructor can't be under construction to the eminence has been solved.
In another embodiment, a non-slip mat 12 is fixedly connected to the top of the cross board 1, and the non-slip mat 12 is made of rubber.
When the constructor carries out the construction on the construction platform, can prevent that the constructor from slipping through slipmat 12.
Through setting up slipmat 12, can make the top of diaphragm 1 have skid-proof effect, prevent that the constructor from slipping.
In another embodiment, the bottom of the transverse plate 1 is provided with a storage box 13, and the front surface of the storage box 13 is hinged with a door plate 14.
When the constructor uses or places the tool, the constructor can pull the door panel 14 to take or store the tool.
Through setting up receiver 13 and door plant 14, can accomodate the instrument, make things convenient for the constructor to use.
In another embodiment, a lighting base 15 is fixedly connected to the top of the supporting column 2, and a lighting lamp 16 is fixedly connected to the top of the lighting base 15.
When the constructor performs construction at night, the constructor can perform construction by the brightness provided by the illuminating lamp 16.
By providing the illumination lamp 16 and the illumination base 15, brightness can be provided at night.
In another embodiment, the support frame 41 is provided with a second limiting groove 17 therein, the surface of the vertical plate 11 is movably connected with the inner wall of the second limiting groove 17, the surface of the vertical plate 11 is sleeved with a fixture block 18, and both sides of the fixture block 18 are movably connected with the inner wall of the second limiting groove 17.
In the lifting process, the vertical plate 11 can be limited by the second limiting groove 17 and the fixture block 18.
Through setting up second spacing groove 17 and fixture block 18, and can carry on spacingly to riser 11.
In another embodiment, the bottom of the supporting frame 41 is fixedly connected with the supporting seats 19, and the number of the supporting seats 19 is two.
During the lifting process, the supporting frame 41 can be supported by the supporting base 19.
The support bracket 41 can be supported by providing the support base 19.
In another embodiment, the top of the bottom plate 42 is fixedly connected with the baffle plate 20, and the inside of the baffle plate 20 is movably connected with the surface of the rotating rod 45 through a bearing.
When the gear 46 rotates, the gear 46 can be restricted by the shutter 20.
The gear 46 can be restricted by the shutter 20.
The working principle of the embodiment is as follows: pulling the pulling plate 10, the pulling plate 10 drives the connecting plate 5 to move left and right, the connecting plate 5 can be placed in the U-shaped plate 31 by stretching and contracting through the first spring 8, the fixing plate 32 is pulled, the connecting rod 35 is driven to move when the fixing plate 32 moves, the connecting rod 35 drives the clamping plate 36 to move, the clamping plate 36 drives the first support 37 to move towards the right end, the first support 37 drives the second support 38 to move, the second support 38 drives the third support 39 to move, the fixing plate 32 is loosened, the connecting plate 5 can be fixed by rebounding through the second spring 34, a protection effect can be achieved for constructors, the motor 44 is started, the motor 44 drives the threaded rod 47 to rotate, the threaded rod 47 drives the gear 46 to rotate, the gear 46 drives the rotating rod 45 to rotate, the rotating rod 45 drives the clamping rod 48 to move left and right through the rotating shaft, the clamping rod 48 drives the pulley 49 to lift, the pulley 49 drives the vertical plate 11 to move up and down, can adjust highly to make constructor conveniently be under construction to the eminence, it is low to have solved construction platform security, and the protective effect is poor with can't adjust highly and lead to constructor to be unable to be under construction to the eminence.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. A construction platform convenient for large-scale factory building construction comprises a transverse plate and is characterized in that a supporting column is fixedly connected with the top of the transverse plate, a fixing mechanism is arranged inside the supporting column, a lifting mechanism is arranged at the bottom of the transverse plate, the surface of the fixing mechanism is movably connected with a connecting plate, the surface of the connecting plate is movably connected with a railing, both ends of the handrail are provided with grooves, one side of the connecting plate extends to the inside of the groove, the surface of the connecting plate is movably connected with the inside of the groove, one side of the connecting plate is fixedly connected with a first spring, the first spring is fixedly connected with the inner wall of the groove, the top end of the railing is provided with a first through hole, the top of the connecting plate is fixedly connected with a pulling plate, the surface of the pulling plate is movably connected with the interior of the first through hole, and the bottom of the transverse plate is fixedly connected with a vertical plate;
the fixing mechanism comprises a U-shaped plate, a fixing plate, a first limiting groove, a second spring, a connecting rod, a clamping plate, a first support, a second support and a third support, wherein one side of the U-shaped plate is fixedly connected with one side of a supporting column, one side of the fixing plate is movably connected with the other side of the supporting column, the first limiting groove is formed in the supporting column, one end of the second spring is fixedly connected with one side of the fixing plate, the other end of the second spring is fixedly connected with the inside of the first limiting groove, one end of the connecting rod extends to the outside of the supporting column, one end of the connecting rod is fixedly connected with one side of the fixing plate, one side of the clamping plate is movably connected with the other end of the connecting rod, the surface of one end of the first support is movably connected with the inside of the clamping plate, the first support is movably connected with the inside of the U-shaped plate through a pin shaft, and the other end of the first support is movably connected with the front face of the second support through a pin shaft, the other side of the second support is movably connected with the back of a third support through a pin shaft, the third support is movably connected with the inside of the U-shaped plate through a pin shaft, and the other side of the third support is movably connected with the surface of the connecting plate;
elevating system includes support frame, bottom plate, backup pad, motor, bull stick, gear, threaded rod, kelly and pulley, the inside of support frame and the surperficial swing joint of riser, the both sides of bottom plate all with one side fixed connection of support frame, the bottom of motor and the top fixed connection of bottom plate, the bottom of threaded rod and the top fixed connection of motor, the bottom of backup pad and the top fixed connection of bottom plate, the surface of bull stick extends to the outside of backup pad and through the inside swing joint of pivot and backup pad, the inside of gear is connected with the fixed surface of bull stick, the inside of kelly is connected with the fixed surface of bull stick, the pulley passes through the fixed surface of rim plate and kelly and is connected, the inside swing joint of pulley and second spacing groove.
2. The construction platform convenient for large-scale factory building construction according to claim, wherein the top of the transverse plate is fixedly connected with a non-slip mat, and the non-slip mat is made of rubber.
3. The construction table convenient for large-scale factory building construction according to the claim, wherein a storage box is arranged at the bottom of the transverse plate, and the front surface of the storage box is hinged with a door plate through a hinge.
4. The construction platform convenient for large factory building construction according to claim, wherein a lighting lamp base is fixedly connected to the top of the supporting column, and a lighting lamp is fixedly connected to the top of the lighting lamp base.
5. The construction platform convenient for large-scale factory building construction of claim, characterized in that, a second spacing groove has been seted up to the inside of support frame, the surface of riser and the inner wall swing joint of second spacing groove, the surface cover of riser is equipped with the fixture block, the both sides of fixture block all with the inner wall swing joint of second spacing groove.
6. The construction platform convenient for large factory building construction according to claim, wherein the bottom of the supporting frame is fixedly connected with two supporting seats.
7. The construction platform convenient for large factory building construction according to claim, wherein a baffle is fixedly connected to the top of the bottom plate, and the inside of the baffle is movably connected with the surface of the rotating rod through a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120702312.2U CN215829995U (en) | 2021-04-07 | 2021-04-07 | Construction platform convenient to large-scale factory building construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120702312.2U CN215829995U (en) | 2021-04-07 | 2021-04-07 | Construction platform convenient to large-scale factory building construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215829995U true CN215829995U (en) | 2022-02-15 |
Family
ID=80187902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120702312.2U Expired - Fee Related CN215829995U (en) | 2021-04-07 | 2021-04-07 | Construction platform convenient to large-scale factory building construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215829995U (en) |
-
2021
- 2021-04-07 CN CN202120702312.2U patent/CN215829995U/en not_active Expired - Fee Related
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Granted publication date: 20220215 |