CN211058256U - Full framing scaffold applied to wind tunnel body construction - Google Patents
Full framing scaffold applied to wind tunnel body construction Download PDFInfo
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- CN211058256U CN211058256U CN201921013552.0U CN201921013552U CN211058256U CN 211058256 U CN211058256 U CN 211058256U CN 201921013552 U CN201921013552 U CN 201921013552U CN 211058256 U CN211058256 U CN 211058256U
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Abstract
The utility model discloses a be applied to full hall scaffold frame of wind-tunnel body construction solves the problem that prior art scaffold frame can not satisfy wind-tunnel construction high accuracy requirement. The utility model comprises four adjustable jacking supports, four rotatable and adjustable bases, four upright posts, a plurality of cross rods and a plurality of inclined rods; the rotatable adjustable base is fixed on the ground of the construction working condition, the rotatable adjustable base is sleeved with an upright post, and the top end of the upright post is sleeved with an adjustable jacking; a plurality of turntable connecting plates are equidistantly distributed on the stand columns, a cross rod is connected between two turntable connecting plates on the same horizontal plane on two adjacent stand columns, and an inclined rod is connected between two adjacent cross rods in the vertical direction. The utility model has the advantages of simple structure and scientific and reasonable design, convenient to use synthesizes scaffold advantages such as bowl knot, gate-type, disc, has very strong stability and bearing capacity, satisfies wind-tunnel construction high accuracy requirement simultaneously, is fit for being used for wind-tunnel cave body structure construction.
Description
Technical Field
The utility model relates to a be applied to full hall scaffold frame of wind-tunnel cave body construction.
Background
Wind tunnels, in short, are devices that produce a controlled air flow, and the ultimate goal of construction is to achieve a uniform, controlled, high quality test air flow in the wind tunnel test section. The structure is special and the precision requirement is high.
In order to ensure the precision index, the quality of each process, each link and the raw materials and the surrounding materials used in the process need to be controlled, and the problem that the structural quality of the hole body does not meet the design requirements due to the accumulation of large errors, so that the construction period and the cost are lost is avoided.
Need set up the scaffold frame in wind-tunnel body work progress, current scaffold frame can not satisfy the wind-tunnel construction high accuracy requirement, therefore the full hall scaffold frame of wind-tunnel body construction is applied to in the design, synthesizes scaffold frame advantages such as bowl knot, gate-type, disc, has very strong stability and bearing capacity, satisfies the wind-tunnel construction high accuracy requirement simultaneously, is fit for being used for the construction of wind-tunnel body structure, becomes the technical problem that technical staff of the affiliated technical field awaits much and solves.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the utility model provides a full hall scaffold frame of being applied to wind-tunnel body construction, solve prior art scaffold frame and can not satisfy the problem of wind-tunnel construction high accuracy requirement.
In order to achieve the above object, the utility model adopts the following technical scheme:
the full hall scaffold applied to the construction of the wind tunnel body comprises four adjustable jacking supports, four rotatable adjustable bases, four upright posts, a plurality of cross rods and a plurality of inclined rods;
the four rotatable and adjustable bases are vertically fixed on the ground of the construction working condition, the four rotatable and adjustable bases are positioned on the same horizontal plane, and the four rotatable and adjustable bases are distributed in a square shape; each rotatable and adjustable base is sleeved with one stand column respectively, the four stand columns are distributed vertically, and the top end of each stand column is sleeved with one adjustable jacking;
the vertical columns are provided with a plurality of turntable connecting plates at equal intervals in the vertical direction, one transverse rod is connected between two turntable connecting plates on the same horizontal plane on every two adjacent vertical columns, one inclined rod is connected between every two transverse rods in the vertical direction, and all the inclined rods between every two adjacent vertical columns are distributed in parallel.
Furthermore, the stand includes a plurality of pole settings and pole setting outer tube, all the pole setting loops through the looks rigid coupling of pole setting outer tube becomes the stand, on the stand the carousel connecting plate all distributes in the pole setting.
Furthermore, the two ends of the vertical rod are respectively provided with a vertical rod opposite through hole, correspondingly, the two ends of the vertical rod outer sleeve are also respectively provided with a vertical rod outer sleeve opposite through hole, one of the top end of the vertical rod and the other of the bottom end of the vertical rod are respectively sleeved with the two ends of one vertical rod outer sleeve, the vertical rod outer sleeve opposite through holes at the two ends of the vertical rod outer sleeve are respectively matched with the vertical rod opposite through holes on the two vertical rods, and the vertical rod outer sleeve and the vertical rod are respectively arranged in the vertical rod opposite through hole and the vertical rod outer sleeve opposite through hole in a penetrating mode through a vertical rod connecting pin in a penetrating mode.
Furthermore, the rotatable and adjustable base comprises a square bottom plate and a base sleeve connecting rod vertically fixed to the center of the top surface of the bottom plate, the base sleeve connecting rod is sleeved in the vertical rod at the bottommost end of the corresponding stand column, a bolt hole is formed in each of four corners of the bottom plate, and the rotatable and adjustable base is fixed with the ground under the construction working condition through four bolts.
Furthermore, the adjustable jacking comprises a jacking part and a jacking part sleeve connecting rod vertically fixed in the center of the bottom surface of the jacking part, and the jacking part sleeve connecting rod is sleeved in the vertical rod at the topmost end of the corresponding upright column.
Furthermore, circumference equidistance is equipped with four joint pieces on the carousel connecting plate, every a joint hole has been seted up on the joint piece respectively, the both ends of horizontal pole are equipped with a connecting block respectively, the outer end of connecting block transversely seted up one with joint piece assorted joint piece inserting groove, the connecting block from last to down seted up with the corresponding joint piece inserting groove in joint hole, the carousel connecting plate passes through joint piece joint is inserted into the horizontal pole tip in the joint piece inserting groove of connecting block, joint hole with it has the joint piece to peg graft in the joint piece inserting hole, the joint piece be used for with the joint piece with the connecting block lock solid.
Furthermore, two ends of the cross rod are respectively provided with a cross rod threaded hole which is penetrated oppositely, two ends of the inclined rod are respectively provided with an inclined rod threaded hole which is penetrated oppositely, and the inclined rod is arranged in the inclined rod threaded hole and the cross rod threaded hole in a penetrating manner through bolts and is fixed with the cross rod.
Furthermore, the distance between two adjacent turntable connecting plates on the same upright post is 500mm, and the length of the transverse rod is 300mm, 600mm, 900mm or 1200 mm; the vertical rods are made of Q345B materials, and all the cross rods, all the adjustable jacking brackets, all the inclined rods, all the vertical rod connecting pins, all the rotatable adjustable bases, all the turntable connecting plates and all the vertical rod outer sleeves are made of Q235 materials.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model has the advantages of simple structure and scientific and reasonable design, convenient to use synthesizes scaffold advantages such as bowl knot, gate-type, disc, has very strong stability and bearing capacity, satisfies wind-tunnel construction high accuracy requirement simultaneously, is fit for being used for wind-tunnel cave body structure construction.
Drawings
Fig. 1 is the utility model discloses full hall scaffold structure sketch map.
Fig. 2 is a schematic view of the vertical rod structure of the present invention.
Fig. 3 is a schematic view of the cross bar structure of the present invention.
Fig. 4 is a schematic view of the structure of the upright rod outer sleeve of the present invention.
Fig. 5 is a schematic view of the slanting rod structure of the present invention.
Fig. 6 is a schematic view of the adjustable jacking structure of the present invention.
Fig. 7 is a schematic view of the structure of the rotatable and adjustable base of the present invention.
Fig. 8 is a schematic view of the structure of the turntable connecting plate of the present invention.
Fig. 9 is a schematic view of the structure of the clamping block of the present invention.
Fig. 10 is a plan view of the full shelf according to the embodiment of the present invention.
Figure 11 is the utility model discloses the vertical section of hole body full hall scaffold in the example.
Fig. 12 is the pre-pressing and stacking diagram of the first partial full scaffold in the example of the utility model.
Fig. 13 is a second partial full shelf set-up view in an example of the present invention.
Fig. 14 is a view of the second part of the full-hall frame preloading pile in the example of the present invention.
Figure 15 is the example of the utility model discloses but the rotatable adjustable support view of bottom plate swash plate adoption.
Fig. 16 is a view of the rotatable and adjustable support for the top plate sloping plate of the embodiment of the present invention.
Fig. 17 is a view of a horizontal adjustable brace bar in an example of the present invention.
Fig. 18 is an installation schematic diagram of a vertical rod on the sloping plate in the example of the present invention.
Fig. 19 is a schematic view of another viewing angle for installing the vertical rod on the sloping plate according to the embodiment of the present invention.
Fig. 20 is a schematic view of the three-dimensional structure of the cross bar of the present invention.
Wherein, the names corresponding to the reference numbers are:
1-vertical rod, 2-horizontal rod, 3-adjustable jacking, 4-diagonal rod, 5-vertical rod connecting pin, 6-rotatable adjustable base, 7-turntable connecting plate, 8-vertical rod outer sleeve, 9-vertical column, 10-bottom plate, 11-base sleeve rod, 12-jacking piece, 13-jacking piece sleeve connecting rod, 14-clamping piece, 15-clamping hole, 16-connecting block, 17-clamping piece inserting groove, 18-clamping block inserting hole, 19-clamping block, 20-bolt hole, 21-horizontal rod threaded hole and 22-diagonal rod threaded hole.
Detailed Description
The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.
As shown in fig. 1-9, fig. 20, the utility model provides a be applied to full hall scaffold frame of wind-tunnel cave body construction, simple structure, design scientific and reasonable, convenient to use synthesizes scaffold frame advantages such as bowl is detained, gate-type, disc, has very strong stability and bearing capacity, satisfies wind-tunnel construction high accuracy requirement simultaneously, is fit for being used for wind-tunnel cave body structure construction. The utility model comprises four adjustable jacking supports 3, four rotatable adjustable bases 6, four upright posts 9, a plurality of cross rods 2 and a plurality of inclined rods 4, wherein the length of each cross rod 2 is 300mm, 600mm, 900mm or 1200 mm; the four rotatable and adjustable bases 6 are vertically fixed on the ground of the construction working condition, the four rotatable and adjustable bases 6 are positioned on the same horizontal plane, and the four rotatable and adjustable bases 6 are distributed in a square shape; each rotatable and adjustable base 6 is sleeved with one upright post 9, the four upright posts 9 are vertically distributed, and the top end of each upright post 9 is sleeved with one adjustable jacking 3.
Stand 9 equidistant distribution has a plurality of carousel connecting plate 7, same root on vertical direction adjacent two on the stand 9 interval between the carousel connecting plate 7 is 500mm, adjacent two be connected with one between two carousel connecting plates 7 that lie in same horizontal plane on the stand 9 horizontal pole 2, adjacent two on vertical direction be connected with one between horizontal pole 2 down tube 4 lies in adjacent two on vertical direction between the stand 9 all down tube 4 parallel distribution. Two opposite-penetrating cross rod threaded holes 21 are formed in two ends of the cross rod 2 respectively, opposite-penetrating inclined rod threaded holes 22 are formed in two ends of the inclined rod 4 respectively, and the inclined rod 4 is arranged in the inclined rod threaded holes 22 and the cross rod threaded holes 21 in a penetrating mode through bolts and fixed with the cross rod 2.
Upright 9 includes a plurality of pole settings 1 and pole setting outer tube 8, all pole setting 1 loops through 8 looks rigid couplings of pole setting outer tube become upright 9, on the upright 9 carousel connecting plate 7 all distributes in pole setting 1 is last, pole setting 1 adopts the Q345B material to make. Rotatable adjustable base 6 is including being square bottom plate 10 and vertical fixation in the base cup joint pole 11 in the top surface central authorities of bottom plate 10, base cup joint pole 11 cup joints in corresponding stand 9 bottommost in pole setting 1, a bolt hole 20 has been seted up respectively to the four corners department of bottom plate 10, rotatable adjustable base 6 is fixed mutually with construction operating mode ground through four bolts. The adjustable jacking 3 comprises a jacking part 12 and a jacking part sleeve connecting rod 13 vertically fixed in the center of the bottom surface of the jacking part 12, and the jacking part sleeve connecting rod 13 is sleeved in the vertical rod 1 at the topmost end of the corresponding upright post 9.
The both ends of pole setting 1 are equipped with a pole setting respectively and to perforating, correspondingly, a pole setting outer tube is also seted up respectively at the both ends of pole setting outer tube 8 to perforating, one the top and another of pole setting 1 the bottom of pole setting 1 respectively with one the both ends of pole setting outer tube 8 cup joint mutually, and the pole setting outer tube at pole setting outer tube 8 both ends is to the perforating cooperation with the pole setting in two poles setting is to the perforating respectively, pole setting outer tube 8 with pole setting 1 is worn to establish respectively at supporting pole setting and is to the perforating in the pole setting outer tube looks rigid coupling through pole setting connecting pin 5. All the cross rods 2, all the adjustable jacking 3, all the inclined rods 4, all the upright rod connecting pins 5, all the rotatable adjustable bases 6, all the turntable connecting plates 7 and all the upright rod outer sleeves 8 are made of Q235 materials.
The utility model discloses establish a carousel connecting plate every 500mm in the pole setting, every connecting plate all can connect the horizontal pole in four directions, and the horizontal pole uses 300mm as the modulus, can set up to the horizontal pole of multiple specifications such as 300mm, 600mm, 900mm, 1200mm according to the on-the-spot needs.
The utility model discloses full hall scaffold technical parameter, support frame design pole setting maximum spacing 1500 × 1500mm, minimum spacing 1000 × 1000mm, the support body stride is 1500mm, the support body stride is the distance between every layer of scaffold (between the horizon bar), free end length is less than or equal to 600 mm. supporting beam is two 12# double channel steel, support frame bottom pole distance of sweeping floor is less than or equal to 500mm, the pole of sweeping floor refers to the partly of scaffold engineering, the pole of sweeping floor is 200mm from ground, connect the horizon bar of pole setting root, divide into vertical and horizontal pole of sweeping floor, play scaffold stabilization effect, horizontal pole of sweeping floor is in vertical pole of sweeping floor below, pass to the basis through horizontal pole of sweeping floor to the pole, full hall scaffold pole setting lower part adds and establishes 250mm wide, the backing plate that 40mm is thick, the backing plate is laid along support body pole full length.
The utility model also provides a method of setting up of full hall scaffold frame of being applied to wind-tunnel cave body construction, including following step:
and 8, repeating the step 6 and the step 7, building layer by layer until the building height is reached, and finally, respectively installing an adjustable jacking on the top ends of the four topmost vertical rods, and accurately adjusting the adjustable jacking to the design height.
The utility model discloses the flow of setting up of full hall scaffold does: acceptance of support frame foundation → construction measurement and positioning → installation of adjustable base adjustment to design height → installation of vertical rod, horizontal rod → installation of ground sweeping rod → installation of diagonal rod → leveling of horizontal ruler → installation of vertical rod connecting piece → installation of the last step of vertical rod, horizontal rod → installation of diagonal rod, horizontal diagonal rod → installation of adjustable top support, adjustment to design height → acceptance of support frame.
The full framing scaffold of the present invention is illustrated by way of example as shown in fig. 10-18.
As shown in fig. 10 and 11, for the full hall scaffold, typesetting is performed in advance, each rod is accurately positioned, and the frame body is perpendicular to the hole wall formwork, so that the formwork support frame is conveniently and vertically connected with the frame body.
As shown in fig. 12, the full framing scaffold is erected in two parts, the first part is erected from the foundation to the lower inclined plate, the first part of the frame body adopts a phi 48 x 2.7 common steel pipe scaffold, after the construction of the first part of the frame body and the formwork is completed, a preloading mode is adopted, so that the support frame completes inelastic deformation before concrete pouring, and elastic deformation is measured, and the preloading force of preloading is the dead weight of the concrete structure with unit length of the bottom plate structure and the live load during concrete pouring.
As shown in fig. 13, after the construction of the bottom plate and the lower inclined plate structure is completed, the full framing scaffold inside the hole and the operating frame outside the hole are erected, after the wall formwork is reinforced, one end of the adjustable brace is fixed with the wall main keel through a bolt, and the other end of the adjustable brace is connected with the full framing cross rod through a fastener, so that the wall and the frame body are integrated, and the perpendicularity of the wall is ensured.
As shown in fig. 14, after the construction of the wall concrete structure is completed, the top sloping plate and the top plate are laid, and after the laying, the preloading of the full-hall frame body inside the hole body is carried out by adopting a preloading mode. And after unloading, arching is carried out according to the elastic deformation and the self deformation of the concrete structure, so as to ensure that the concrete reaches the design requirement after forming.
As shown in fig. 15-18, full hall scaffold quality control measures.
As shown in fig. 15 and 16, the bottom plate and the top plate of the hole body are inclined planes, and the adjustable support is attached to the structural surface by adopting the rotatable and adjustable support and the adjustable rotatable jacking, so that an additional conversion seat is not required to be added, and the uneven settlement of the frame body caused by the fact that the upright rod is not attached to the structural surface is avoided.
As shown in fig. 17, the adjustable brace rod of level is set up to the internal portion in hole, and brace rod one end passes through the bolt with wall body main joist to be fixed, and one end passes through the fastener with the horizontal steel pipe of support body to be connected, improves the wholeness of support body and wall body, has guaranteed the straightness that hangs down of wall body.
As shown in fig. 18 and 19, a counter-pull screw is reserved on the bottom inclined plate, and the pull rod penetrates through a hole reserved in the channel steel to fix the double-channel steel on the upper surface of the bottom inclined plate. And a steel plate corner plate with the thickness of 10mm is welded at the upper part of the channel steel to provide a bearing surface for the vertical rod base.
The above embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the protection scope of the present invention, but all the insubstantial changes or modifications made in the spirit and the idea of the main design of the present invention, the technical problems solved by the embodiment are still consistent with the present invention, and all should be included in the protection scope of the present invention.
Claims (8)
1. The full hall scaffold applied to wind tunnel body construction is characterized by comprising four adjustable jacking supports (3), four rotatable adjustable bases (6), four upright posts (9), a plurality of cross rods (2) and a plurality of inclined rods (4);
the four rotatable and adjustable bases (6) are vertically fixed on the ground of a construction working condition, the four rotatable and adjustable bases (6) are positioned on the same horizontal plane, and the four rotatable and adjustable bases (6) are distributed in a square shape; each rotatable and adjustable base (6) is sleeved with one upright post (9), the four upright posts (9) are vertically distributed, and the top end of each upright post (9) is sleeved with one adjustable jacking (3);
the vertical column (9) is provided with a plurality of turntable connecting plates (7) at equal intervals in the vertical direction, two adjacent turntable connecting plates (7) on the same horizontal plane on the vertical column (9) are connected with one cross rod (2), two adjacent cross rods (2) in the vertical direction are connected with one diagonal rod (4), and all diagonal rods (4) between the two adjacent vertical columns (9) are distributed in parallel in the vertical direction.
2. The full hall scaffold applied to wind tunnel body construction according to claim 1, wherein the upright (9) comprises a plurality of uprights (1) and upright outer sleeves (8), all the uprights (1) are fixedly connected into the upright (9) through the upright outer sleeves (8), and the turntable connecting plates (7) on the uprights (9) are all distributed on the uprights (1).
3. The full framing scaffold applied to wind tunnel construction according to claim 2, wherein two ends of the vertical rod (1) are respectively provided with a vertical rod through hole, correspondingly, two ends of the vertical rod outer sleeve (8) are respectively provided with a vertical rod outer sleeve through hole, the top end of one vertical rod (1) and the bottom end of the other vertical rod (1) are respectively sleeved with two ends of one vertical rod outer sleeve (8), the vertical rod outer sleeve through holes at two ends of the vertical rod outer sleeve (8) are respectively matched with the vertical rod through holes on the two vertical rods, and the vertical rod outer sleeve (8) and the vertical rod (1) are respectively penetrated through the corresponding vertical rod through hole and the vertical rod outer sleeve through hole by the vertical rod connecting pin (5) and are fixedly connected.
4. The full framing scaffold applied to wind tunnel body construction according to claim 3, wherein the rotatable and adjustable base (6) comprises a square bottom plate (10) and a base sleeve connecting rod (11) vertically fixed in the center of the top surface of the bottom plate (10), the base sleeve connecting rod (11) is sleeved in the vertical rod (1) at the bottom end of the corresponding upright post (9), a bolt hole (20) is respectively formed in each of four corners of the bottom plate (10), and the rotatable and adjustable base (6) is fixed with the ground under construction conditions through four bolts.
5. The full framing scaffold applied to wind tunnel body construction according to claim 4, wherein the adjustable jacking (3) comprises a jacking member (12) and a jacking member extension rod (13) vertically fixed at the center of the bottom surface of the jacking member (12), and the jacking member extension rod (13) is sleeved in the vertical rod (1) at the topmost end of the corresponding upright post (9).
6. The full hall scaffold applied to wind tunnel body construction according to claim 5, wherein four clamping pieces (14) are arranged on the turntable connecting plate (7) at equal intervals in the circumferential direction, each clamping piece (14) is respectively provided with a clamping hole (15), two ends of the cross rod (2) are respectively provided with a connecting block (16), the outer end of each connecting block (16) is transversely provided with a clamping piece inserting groove (17) matched with the clamping piece (14), the connecting block (16) is provided with clamping block inserting holes (18) corresponding to the clamping holes (15) from top to bottom, the turntable connecting plate (7) is clamped into the clamping piece inserting grooves (17) of the connecting blocks (16) at the end parts of the cross rod (2) through the clamping pieces (14), and clamping blocks (19) are inserted into the clamping holes (15) and the clamping block inserting holes (18), the clamping block (19) is used for locking the clamping sheet (14) and the connecting block (16).
7. The full hall scaffold applied to wind tunnel body construction according to claim 6, wherein two ends of the cross rod (2) are respectively provided with a cross rod threaded hole (21) which is penetrated through, two ends of the diagonal rod (4) are respectively provided with a diagonal rod threaded hole (22) which is penetrated through, and the diagonal rod (4) is arranged in the diagonal rod threaded hole (22) and the cross rod threaded hole (21) through bolts in a penetrating manner and fixed with the cross rod (2).
8. The full hall scaffold applied to wind tunnel body construction according to claim 7, wherein the distance between two adjacent turntable connecting plates (7) on the same upright post (9) is 500mm, and the length of the cross bar (2) is 300mm, 600mm, 900mm or 1200 mm; the upright rod (1) is made of Q345B material, and all the cross rods (2), all the adjustable jacking brackets (3), all the inclined rods (4), all the upright rod connecting pins (5), all the rotatable adjustable bases (6), all the turntable connecting plates (7) and all the upright rod outer sleeves (8) are made of Q235 material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921013552.0U CN211058256U (en) | 2019-07-02 | 2019-07-02 | Full framing scaffold applied to wind tunnel body construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921013552.0U CN211058256U (en) | 2019-07-02 | 2019-07-02 | Full framing scaffold applied to wind tunnel body construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211058256U true CN211058256U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921013552.0U Expired - Fee Related CN211058256U (en) | 2019-07-02 | 2019-07-02 | Full framing scaffold applied to wind tunnel body construction |
Country Status (1)
| Country | Link |
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| CN (1) | CN211058256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259073A (en) * | 2019-07-02 | 2019-09-20 | 中国建筑第八工程局有限公司 | Full hall scaffold and its erection method applied to wind tunnel body construction |
| CN112942825A (en) * | 2021-02-03 | 2021-06-11 | 浙江吉祥建设集团有限公司 | Formwork support structure and construction method thereof |
-
2019
- 2019-07-02 CN CN201921013552.0U patent/CN211058256U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259073A (en) * | 2019-07-02 | 2019-09-20 | 中国建筑第八工程局有限公司 | Full hall scaffold and its erection method applied to wind tunnel body construction |
| CN112942825A (en) * | 2021-02-03 | 2021-06-11 | 浙江吉祥建设集团有限公司 | Formwork support structure and construction method thereof |
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Granted publication date: 20200721 Termination date: 20210702 |
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| CF01 | Termination of patent right due to non-payment of annual fee |