CN110965750A - Liftable full hall scaffold - Google Patents
Liftable full hall scaffold Download PDFInfo
- Publication number
- CN110965750A CN110965750A CN202010031965.2A CN202010031965A CN110965750A CN 110965750 A CN110965750 A CN 110965750A CN 202010031965 A CN202010031965 A CN 202010031965A CN 110965750 A CN110965750 A CN 110965750A
- Authority
- CN
- China
- Prior art keywords
- rack
- snake
- transverse
- longitudinal
- tilt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/18—Scaffolds primarily resting on the ground adjustable in height
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G1/00—Scaffolds primarily resting on the ground
- E04G1/02—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension [1D] only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means
- E04G1/04—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension [1D] only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section
- E04G1/06—Scaffolds primarily resting on the ground composed essentially of members elongated in one dimension [1D] only, e.g. poles, lattice masts, with or without end portions of special form, connected together by any means the members being exclusively poles, rods, beams, or other members of similar form and simple cross-section comprising members with rod-like or tubular portions fitting together end to end, with or without separate connecting pieces
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Catching Or Destruction (AREA)
Abstract
The invention discloses a liftable all-round scaffold which comprises a stand column, wherein a leg reinforcing plate is connected to the bottom of the stand column, an anti-tilt structure is installed on the lower portion of the stand column, a longitudinal snake rack is sleeved on the outer side of the upper portion of the stand column, a transverse snake rack is connected between the middle portions of the longitudinal snake rack, a platform plate is installed above a platform supporting cross beam, a guardrail is connected with the transverse snake rack through a universal buckle, a top wheel seat is installed at the top end of the stand column, a steel wire rope is wound on the surface of the top wheel seat, the tail end of the steel wire rope is fixed with the longitudinal snake rack through a connecting piece, and the head end. According to the invention, the vertical columns, the longitudinal snake rack, the transverse snake rack, the top wheel seat, the steel wire rope and the winch are matched with each other, so that the whole scaffold is convenient to lift, the height of the scaffold is adjusted, the construction work is convenient to carry out, the operation is simple and easy, and the safety of workers standing on the platform plate is further ensured through the interaction of the anti-tilting structure and the guardrail, and safety accidents are avoided.
Description
Technical Field
The invention relates to the technical field of scaffolds, in particular to a liftable full hall scaffold.
Background
Along with the development of science and technology, many difficult and complicated problems at high altitude are treated, the existing high-altitude operation equipment on the market is various in types and more complete in matching, the technology in the aspect is mature day by day, and the scaffold is used as one of the main forces of the high-altitude operation equipment. The scaffold refers to various supports which are erected for workers to operate and solve vertical and horizontal transportation on a construction site and are used in places where external walls, interior decoration or high floor heights cannot be directly constructed. The scaffold has the characteristics of portability, flexibility, convenient transportation and the like. However, the scaffold in the prior art is inconvenient to lift, the height of the scaffold needs to be continuously built upwards, the scaffold is inconvenient to operate, the safety performance of the scaffold is low, and personal safety is threatened.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the liftable full scaffold, which effectively solves the problems that the scaffold in the prior art is inconvenient to lift, the height adjustment needs to be continuously built upwards, the operation is inconvenient, the safety performance is low, and the personal safety is threatened.
In order to achieve the purpose, the invention provides the following technical scheme: including the stand, the bottom of stand is connected with the leg reinforcing plate, the anti-tilt structure is installed to the lower part of stand, vertical little snake frame has been cup jointed in the upper portion outside of stand, be connected with the little frame of horizontal snake between the middle part of vertical little frame of snake, be connected with platform supporting beam between the little frame of horizontal snake, the landing slab is installed to platform supporting beam's top, the guardrail is installed to the top of the little frame of horizontal snake, the guardrail is connected through universal knot with the little frame of horizontal snake, the top wheel seat is installed on the top of stand, the surface winding of top wheel seat has wire rope, wire rope's end is fixed through the connecting piece with the little frame of vertical snake, wire rope's head end is connected with the capstan winch, one side of capstan winch.
Preferably, the anti-tilt structure comprises an anti-tilt rack, a linkage rack, a sliding block with a handle and a clamping piece, the anti-tilt rack is connected with the sliding block with the upright post through the handle, the linkage rack is connected above the anti-tilt rack, and the linkage rack is fixedly connected with the anti-tilt rack through the clamping piece.
Preferably, an inclined stay bar is connected between one seventh of the bottom of the transverse snake rack and the bottom of the longitudinal snake rack, the inclined stay bar is connected with the longitudinal snake rack through a fixing lug and a shaft pin, and the inclined stay bar is connected with the transverse snake rack through a rotating buckle.
Preferably, adjustable casters are installed below the upright columns, and the number of the adjustable casters is four.
Preferably, hooks are welded at two ends of the platform plate.
Preferably, the vertical snake rack is formed by welding the snake rack and a plurality of connecting accessories, fixing plates are welded at two ends of the vertical snake rack, and the fixing plates are connected with the transverse snake rack through bolts.
Preferably, the surface of the upright post is provided with a scale.
Preferably, the anti-tilt structure, the longitudinal snake-shaped frame, the transverse snake-shaped frame and the platform supporting cross beam are all members made of aluminum alloy materials.
According to the invention, the vertical columns, the longitudinal snake rack, the transverse snake rack, the top wheel seat, the steel wire rope and the winch are matched with each other, so that the whole scaffold is convenient to lift, the height of the scaffold is adjusted, the construction work is convenient to carry out, the operation is simple and easy, and the safety of workers standing on the platform plate is further ensured through the interaction of the anti-tilting structure and the guardrail, and safety accidents are avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is an inverted view of the present invention.
Fig. 3 is a side view of the present invention.
Fig. 4 is a top view of the present invention.
Reference numbers in the figures: 1. a column; 2. a leg reinforcing plate; 3. an anti-tilt structure; 301. an anti-roll rack; 302. a linkage sheet rack; 303. a slider with a handle; 304. a fastener; 4. a longitudinal snake rack; 5. transverse snake racks; 6. a diagonal brace; 7. fixing the ear; 8. a fixing plate; 9. a platform plate; 10. a platform support beam; 11. a guardrail; 12. a top wheel seat; 13. a wire rope; 14. a connecting member; 15. a winch; 16. a handle; 17. a universal buckle; 18. adjustable caster wheels; 19. a winch fixing frame; 20. a shaft pin; 21. and (6) rotating the buckle.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 4.
In the first embodiment, as shown in fig. 1, 2, 3 and 4, the present invention includes an upright column 1, a leg reinforcing plate 2 is connected to the bottom of the upright column 1, an anti-tilt structure 3 is installed on the lower portion of the upright column 1, a longitudinal snake rack 4 is sleeved on the outer side of the upper portion of the upright column 1, a transverse snake rack 5 is connected between the middle portions of the longitudinal snake racks 4, a platform supporting beam 10 is connected between the transverse snake racks 5, a platform plate 9 is installed above the platform supporting beam 10, a guardrail 11 is installed above the transverse snake rack 5, the guardrail 11 is connected with the transverse snake rack 5 through a universal buckle 17, a top wheel seat 12 is installed on the top end of the upright column 1, a steel wire rope 13 is wound on the surface of the top wheel seat 12, the tail end of the steel wire rope 13 is fixed to the longitudinal snake rack 4 through a connecting member 14, the head end of the steel wire rope 13 is connected with a winch 15, one side of the winch, firstly, the whole scaffold is moved to a construction site through an adjustable caster 18, then according to construction conditions, a handle 16 is shaken simultaneously, a steel wire rope 13 slides in a top wheel seat 12, a winch 15 is controlled to wind or send out the steel wire rope 13, the tail end of the steel wire rope 13 is connected with a longitudinal snake rack 4 through a connecting piece 14, so that the longitudinal snake rack 4 is driven to move up and down on an upright post 1, the longitudinal snake rack 4, a transverse snake rack 5 and a platform supporting cross beam 10 are connected together, a platform plate 9 is driven to move together along with the ascending or descending of the longitudinal snake rack 4, a scale is arranged on the surface of the upright post 1, the scale on the upright post 1 corresponds to an indicated numerical value, the ascending and descending levelness of the platform plate 9 is improved, a linkage sheet frame 302 of an anti-inclining structure 3 is connected with the transverse snake rack 5, further, the anti-inclining structure 3 slides on the upright post 1 through a sliding block 303 with a handle, then rise the space of landing slab 9 below whenever and can hold when a set of anti-tilt structure 3, increase and connect a set of anti-tilt structure 3, anti-tilt structure 3 can regard as the ladder, supply operating personnel to climb from top to bottom, anti-tilt structure 3 can strengthen holistic fastness, further guarantee the security that the staff stood on landing slab 9 with guardrail 11's cooperation, stop the incident, whole scaffold frame is convenient for height-adjusting, the liftable makes things convenient for going on of construction work, the operation is simple and easy.
Second embodiment, on the basis of first embodiment, by fig. 1, fig. 2 and fig. 3 show, anti-tilt structure 3 includes anti-tilt rack 301, linkage rack 302, take slider 303 and fastener 304, anti-tilt rack 301 is connected slider 303 through taking with stand 1, the top of anti-tilt rack 301 is connected with linkage rack 302, linkage rack 302 passes through fastener 304 fixed connection with anti-tilt rack 301, anti-tilt structure 3 can strengthen holistic fastness, take the perpendicularity that slider 303 can stabilize stand 1 when platform board 9 goes up and down, reach anti-tilt effect, when the space that rises to platform board 9 below can hold a set of anti-tilt structure 3, increase and connect a set of anti-tilt structure 3, anti-tilt structure 3 can regard as the ladder, supply operating personnel to climb up and down.
In the third embodiment, based on the first embodiment, as shown in fig. 1, 2 and 3, an inclined strut 6 is connected between one seventh of the bottom of the transverse snake rack 5 and the bottom of the longitudinal snake rack 4, the inclined strut 6 is connected with the longitudinal snake rack 4 through a fixing lug 7 and a shaft pin 20, the inclined strut 6 is connected with the transverse snake rack 5 through a rotating buckle 21, one end of the inclined strut 6 with the rotating buckle 21 is fixed on the transverse snake rack 5, the other end of the inclined strut 6 is placed in the fixing lug 7, a fixing hole on the inclined strut 6 is aligned with a fixing hole on the fixing lug 7, the shaft pin 20 penetrates through the fixing hole and the fixing hole to fix the inclined strut 6, and the stability of the whole scaffold can be further improved by the inclined strut 6.
In the fourth embodiment, on the basis of the first embodiment, as shown in fig. 2 and 3, adjustable casters 18 are installed below the upright 1, the number of the adjustable casters 18 is four, and the adjustable casters 18 facilitate the movement of the whole scaffold.
Fifth, on the basis of first embodiment, the welding of the both ends of the landing slab 9 has the couple, with the couple of landing slab 9 collude on platform supporting beam 10 and horizontal little frame 5 can, be convenient for the installation and the dismantlement of landing slab 9.
Sixth embodiment, on the basis of first embodiment, given by fig. 1 and 2, vertical little snake frame 4 is by little snake frame and several kinds of attachment weld forming, and the both ends of vertical little snake frame 4 all weld fixed plate 8, and fixed plate 8 passes through bolted connection with horizontal little snake frame 5, passes the bolt and is connected with the preformed hole on horizontal little snake frame 5 through the preformed hole on the fixed plate 8, and the installation and the dismantlement between horizontal little snake frame 5 and vertical little snake frame 4 are convenient for.
Seventh embodiment, on the basis of first embodiment, the surface of the column 1 is provided with a scale, so that the scale on the column 1 corresponds to the indicated numerical value, and the levelness of the lifting of the platform plate 9 is improved.
In the eighth embodiment, on the basis of the first embodiment, the anti-tilt structure 3, the longitudinal clip frame 4, the transverse clip frame 5 and the platform supporting beam 10 are all members made of an aluminum alloy material, so that the important parts of the whole scaffold have excellent strength, and the firmness of the scaffold is ensured.
The working principle is as follows: when the invention is used, firstly, the whole scaffold is moved to a construction site through the adjustable caster 18, then according to the construction condition, the handle 16 is simultaneously shaken, the steel wire rope 13 slides in the top wheel seat 12, the winch 15 is controlled to wind or send out the steel wire rope 13, the tail end of the steel wire rope 13 is connected with the longitudinal snake rack 4 through the connecting piece 14, so as to drive the longitudinal snake rack 4 to move up and down on the upright post 1, the longitudinal snake rack 4, the transverse snake rack 5 and the platform supporting beam 10 are connected together, the platform plate 9 is driven to move together along with the ascending or descending of the longitudinal snake rack 4, the surface of the upright post 1 is provided with a scale, the scale on the upright post 1 corresponds to the numerical value indicated on the scale, the ascending and descending levelness of the platform plate 9 is improved, the linkage rack 302 of the anti-inclining structure 3 is connected with the transverse snake rack 5, and the perpendicularity of the upright post 1 can be, reach and prevent the tilt effect, the area lets prevent that incline structure 3 slides on stand 1 to slider 303, go up and down along with horizontal snake son frame 5 together, every time rise to the space of landing slab 9 below can hold when a set of structure 3 of preventing inclining, increase and connect a set of structure 3 of preventing inclining, prevent that incline structure 3 can regard as the ladder, supply operating personnel to climb from top to bottom, prevent that incline structure 3 can strengthen holistic fastness, further guarantee the security that the staff stands on landing slab 9 with guardrail 11's cooperation, stop the incident, whole scaffold frame is convenient for height-adjusting, the liftable makes things convenient for going on of construction work, the operation is simple and easy.
Compared with the prior art, the invention has the following advantages: 1) firstly, the vertical column 1, the longitudinal snake frame 4, the transverse snake frame 5, the top wheel seat 12, the steel wire rope 13 and the winch 15 are matched with each other, so that the whole scaffold is convenient to lift, the height of the scaffold is adjusted, the construction work is convenient to carry out, and the operation is simple and easy; 2) secondly, through the mutual action of the anti-tilting structure 3 and the guardrail 11, the safety of the worker standing on the platform plate 9 is further ensured, and safety accidents are avoided.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a liftable full hall scaffold, includes stand (1), its characterized in that: the bottom of the upright post (1) is connected with a leg reinforcing plate (2), the lower part of the upright post (1) is provided with an anti-tilting structure (3), the outer side of the upper part of the upright post (1) is sleeved with a longitudinal snake rack (4), a transverse snake rack (5) is connected between the middle parts of the longitudinal snake racks (4), a platform supporting cross beam (10) is connected between the transverse snake racks (5), a platform plate (9) is arranged above the platform supporting cross beam (10), a guardrail (11) is arranged above the transverse snake rack (5), the guardrail (11) is connected with the transverse snake rack (5) through a universal buckle (17), a top wheel seat (12) is arranged at the top end of the upright post (1), a steel wire rope (13) is wound on the surface of the top wheel seat (12), the tail end of the steel wire rope (13) is fixed with the longitudinal snake rack (4) through a connecting piece (14), the head end of the steel wire rope (, a handle (16) is arranged on one side of the winch (15), and a winch fixing frame (19) is arranged on the rear side of the winch (15).
2. The liftable full hall scaffold of claim 1, which is characterized in that: the anti-tilt structure (3) comprises an anti-tilt rack (301), a linkage rack (302), a band handle sliding block (303) and a clamping piece (304), the anti-tilt rack (301) is connected with the upright post (1) through the band handle sliding block (303), the linkage rack (302) is connected above the anti-tilt rack (301), and the linkage rack (302) is fixedly connected with the anti-tilt rack (301) through the clamping piece (304).
3. The liftable full hall scaffold of claim 1, which is characterized in that: an inclined stay bar (6) is connected between one seventh of the bottom of the transverse snake rack (5) and the bottom of the longitudinal snake rack (4), the inclined stay bar (6) is connected with the longitudinal snake rack (4) through a fixing lug (7) and a shaft pin (20), and the inclined stay bar (6) is connected with the transverse snake rack (5) through a rotating buckle (21).
4. The liftable full hall scaffold of claim 1, which is characterized in that: adjustable casters (18) are installed below the upright post (1), and the number of the adjustable casters (18) is four.
5. The liftable full hall scaffold of claim 1, which is characterized in that: hooks are welded at two ends of the platform plate (9).
6. The liftable full hall scaffold of claim 1, which is characterized in that: the vertical snake rack (4) is formed by welding the snake rack and a plurality of connecting accessories, fixing plates (8) are welded at two ends of the vertical snake rack (4), and the fixing plates (8) are connected with the transverse snake rack (5) through bolts.
7. The liftable full hall scaffold of claim 1, which is characterized in that: the surface of the upright post (1) is provided with a scale.
8. The liftable full hall scaffold of claim 1, which is characterized in that: the anti-tilt structure (3), the longitudinal snake-shaped frame (4), the transverse snake-shaped frame (5) and the platform supporting cross beam (10) are all members made of aluminum alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010031965.2A CN110965750A (en) | 2020-01-13 | 2020-01-13 | Liftable full hall scaffold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010031965.2A CN110965750A (en) | 2020-01-13 | 2020-01-13 | Liftable full hall scaffold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110965750A true CN110965750A (en) | 2020-04-07 |
Family
ID=70038209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010031965.2A Pending CN110965750A (en) | 2020-01-13 | 2020-01-13 | Liftable full hall scaffold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110965750A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796528A (en) * | 2021-02-23 | 2021-05-14 | 中冶建工集团重庆钢结构有限公司 | Construction method for high-altitude in-situ splicing of large-span steel truss |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB167516A (en) * | 1920-11-04 | 1921-08-18 | Walter Samuel Boughey | Improvements in mechanically elevated scaffold staging and carrier for building or other purposes |
| GB8521101D0 (en) * | 1985-08-22 | 1985-09-25 | Murray G | Extendable tower |
| KR20140005879U (en) * | 2013-05-09 | 2014-11-20 | 대우조선해양 주식회사 | Steering and adjustable height type of foot operatable movable working platform |
| CN206110628U (en) * | 2016-10-12 | 2017-04-19 | 曹振华 | Portable lift |
| CN209163402U (en) * | 2018-07-27 | 2019-07-26 | 中铁十四局集团有限公司 | A mobile operating platform |
| CN209653337U (en) * | 2018-09-29 | 2019-11-19 | 四川达虹宇建筑工程有限公司 | A kind of movable Scaffold for building |
| CN211548676U (en) * | 2020-01-13 | 2020-09-22 | 珠海及力高空作业设备有限公司 | Liftable full hall scaffold |
-
2020
- 2020-01-13 CN CN202010031965.2A patent/CN110965750A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB167516A (en) * | 1920-11-04 | 1921-08-18 | Walter Samuel Boughey | Improvements in mechanically elevated scaffold staging and carrier for building or other purposes |
| GB8521101D0 (en) * | 1985-08-22 | 1985-09-25 | Murray G | Extendable tower |
| KR20140005879U (en) * | 2013-05-09 | 2014-11-20 | 대우조선해양 주식회사 | Steering and adjustable height type of foot operatable movable working platform |
| CN206110628U (en) * | 2016-10-12 | 2017-04-19 | 曹振华 | Portable lift |
| CN209163402U (en) * | 2018-07-27 | 2019-07-26 | 中铁十四局集团有限公司 | A mobile operating platform |
| CN209653337U (en) * | 2018-09-29 | 2019-11-19 | 四川达虹宇建筑工程有限公司 | A kind of movable Scaffold for building |
| CN211548676U (en) * | 2020-01-13 | 2020-09-22 | 珠海及力高空作业设备有限公司 | Liftable full hall scaffold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112796528A (en) * | 2021-02-23 | 2021-05-14 | 中冶建工集团重庆钢结构有限公司 | Construction method for high-altitude in-situ splicing of large-span steel truss |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209873572U (en) | A temporary navigable lifting station with adjustable vertical lifting height | |
| CN212129843U (en) | Construction equipment scaffold | |
| CN211548676U (en) | Liftable full hall scaffold | |
| CN213626572U (en) | Tool type external cantilever operation platform | |
| CN212957538U (en) | Roof flower frame beam and outer wall decoration construction movable operation platform | |
| AU2020100560B4 (en) | A shroud | |
| CN110965750A (en) | Liftable full hall scaffold | |
| CN205822747U (en) | Architectural engineering scaffold | |
| CN216811541U (en) | Rail transit tunnel climbing operation platform | |
| CN111155754B (en) | Automatic elevator shaft jacking platform and using method thereof | |
| CN213039199U (en) | Movable anti-falling ladder stand | |
| CN210337912U (en) | Electrified construction ladder car of adjustable level railway | |
| CN210563298U (en) | Interior decoration is with multi-level high decoration and fitment operation platform | |
| CN113059524A (en) | Auxiliary propeller dismounting tool, dismounting method and mounting method | |
| CN109537868B (en) | Portable operation platform for hoisting assembled main beams | |
| CN217128907U (en) | Scaffold frame for building engineering construction convenient to material loading | |
| CN213774373U (en) | Construction platform convenient to remove | |
| CN214531799U (en) | Building external climbing type building construction operation platform | |
| CN210685328U (en) | All-steel Attached Lifting Scaffolding | |
| CN221422604U (en) | Movable maintenance platform | |
| CN210459915U (en) | Combined operation platform | |
| CN221461744U (en) | Safety frame for building construction | |
| CN209293376U (en) | A scaffolding platform for high-altitude and efficient construction | |
| CN215484490U (en) | Telescopic scaffold | |
| CN210457254U (en) | Tower crane frame |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200407 |
|
| RJ01 | Rejection of invention patent application after publication |