CN108590205B - Device and method for adjusting installation position of steel structure stiff steel column - Google Patents
Device and method for adjusting installation position of steel structure stiff steel column Download PDFInfo
- Publication number
- CN108590205B CN108590205B CN201810609639.8A CN201810609639A CN108590205B CN 108590205 B CN108590205 B CN 108590205B CN 201810609639 A CN201810609639 A CN 201810609639A CN 108590205 B CN108590205 B CN 108590205B
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- auxiliary device
- adjusting
- steel column
- column
- panel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 134
- 239000010959 steel Substances 0.000 title claims abstract description 134
- 238000009434 installation Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000002146 bilateral effect Effects 0.000 claims 2
- 239000003351 stiffener Substances 0.000 description 10
- 230000001276 controlling effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a device and a method for adjusting the installation position of a steel structure stiff steel column. The adjusting device comprises an auxiliary device base; a connecting surface is arranged below the auxiliary device base, and a connecting hole is formed in the connecting surface; an adjusting surface is arranged above the auxiliary device base, and an adjusting bolt is arranged on the adjusting surface; the auxiliary device base is fixedly connected with the column head of the lower section steel column to be installed through a connecting surface; when the upper steel column and the lower steel column are installed, the adjusting bolt is abutted against the bottom of the upper steel column; the connecting surface and the adjusting surface are positioned on different planes, and the connecting surface is close to the installation plane of the lower section steel column. The position of the steel column is adjusted, the installation accuracy of the steel column is improved, and the engineering quality is ensured.
Description
Technical Field
The invention relates to a device and a method for adjusting the position of a steel structure during the field installation of a cross-shaped steel column and an H-shaped steel column.
Background
The steel structure cross or H-shaped stiff steel column is installed on site, the node method of the connecting plate is only provided in the prior art, but the position adjustment measure for the steel column is not provided, the hoisting operation efficiency is low during the on-site installation, and the installation accuracy of the steel column cannot be ensured.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a device capable of effectively improving hoisting operation efficiency and adjusting the position of a steel column.
In order to achieve the purpose, the invention provides a device for adjusting the installation position of a steel structure stiffness steel column, which is used for performing field auxiliary installation on the stiffness cross-shaped or H-shaped steel column; the position adjusting device comprises an auxiliary device base; a connecting surface I is arranged below the auxiliary device base, and a mounting hole I is formed in the connecting surface I; an adjusting surface I is arranged above the auxiliary device base, and an adjusting bolt I is arranged on the adjusting surface I; the auxiliary device base is fixedly connected with the column head of the lower section steel column to be installed through a connecting surface I; when the upper steel column and the lower steel column are installed, the adjusting bolt is abutted against the bottom of the upper steel column; the connecting surface I and the adjusting surface I are positioned on different planes, and the connecting surface I is close to the installation plane of the lower section steel column.
The adjustment of the plane position of the upper section steel column is carried out by controlling the screwing degree of the adjusting bolt I of the auxiliary device base.
Further, a plurality of auxiliary device bases are arranged on the column head of the lower section steel column to be installed, positioning grooves are formed between all auxiliary device bases arranged at the column head position of the same steel column, and the shape of the notch is matched with the structure of the steel column.
The positioning of the upper section steel column is conveniently carried out through the positioning groove, so that the efficiency of hoisting operation is improved.
Further, the position adjusting device of the invention also comprises an auxiliary device support; the auxiliary device support comprises two mutually perpendicular connecting surfaces II and an adjusting surface II; the auxiliary device support is connected with the upper section steel column through a connecting surface II; an adjusting bolt II is arranged on the adjusting surface II; when the upper steel column and the lower steel column are installed, the adjusting bolt II is abutted against the upper surface of the corresponding auxiliary device base on the lower steel column.
And the verticality of the upper section steel column is adjusted by controlling the screwing degree of the adjusting bolt II of the auxiliary mounting support.
Further, when the steel column to be installed is a cross-shaped steel column, 8 auxiliary device bases are arranged at the column head position of the lower section steel column, are respectively positioned at four corners of the cross-shaped steel column, are distributed on two sides, and form a cross-shaped positioning groove which is opened upwards through gaps among the 8 auxiliary device bases; the number of auxiliary device supports is 8, and the auxiliary device supports are arranged at the corresponding positions of the auxiliary device bases of the lower part of the upper section steel column and the lower section steel column.
Further, the auxiliary device base comprises a groove plate, a connecting panel I, an adjusting panel I, a middle stiffening rib, an upper stiffening rib and a side stiffening rib I; the upper stiffening ribs and the middle stiffening ribs are arranged in parallel, and the groove plates are respectively and vertically connected with the middle parts of the upper stiffening ribs and the middle stiffening ribs; the two side surfaces of the auxiliary device base are provided with side stiffening ribs I which are respectively and vertically connected with the two ends of the upper stiffening rib and the middle stiffening rib; the adjusting panel I is fixedly arranged between the upper stiffening rib and the middle stiffening rib to form an adjusting surface I of the auxiliary device base; the connecting panel I is fixedly arranged below the middle stiffening rib to form a connecting surface I of the auxiliary device base; adjusting panel I and connecting panel I parallel arrangement just lie in different planes, and connecting panel I is located the outside.
Further, the auxiliary device support comprises a connecting panel II, an adjusting panel II and a side stiffening rib II; the connecting panel II and the adjusting panel II are mutually perpendicular to form a connecting surface II and an adjusting surface II respectively; the two side stiffening ribs II are respectively arranged on two sides of the auxiliary device support and are vertically connected with two ends of the connecting panel II and the adjusting panel II.
Further, the auxiliary device support also comprises a plate bottom stiffening rib; the stiffening rib at the bottom of the plate is vertically arranged below the adjusting panel II and fixedly connected with the connecting panel II.
Further, two adjusting bolts I are symmetrically arranged on the auxiliary device base along the center left and right, and two adjusting bolts II are symmetrically arranged on the adjusting panel II of the auxiliary device support along the center left and right.
The invention also provides an adjusting method of the steel structure stiffness steel column installation position adjusting device, which comprises the following steps:
when the auxiliary device base is only provided, firstly, the auxiliary device base is installed at the position corresponding to the column head of the lower section steel column, the auxiliary device base and the lower section steel column are fixed through the installation hole I by bolts, and an upward opening positioning groove is formed among the auxiliary device bases; then hoisting the upper steel cutting column, adjusting the direction to fall into the opening positioning groove, and installing a connecting lug plate for temporary fixation; and (3) screwing an adjusting bolt I of the auxiliary device base to enable the adjusting bolt I to abut against the lower part of the upper section steel column, and adjusting the plane position of the upper section steel column by adjusting the adjusting bolt I of the auxiliary device base.
When the auxiliary device base and the auxiliary device support are arranged at the same time, the auxiliary device base is firstly installed at the corresponding position of the lower section steel column head, the auxiliary device base and the lower section steel column are fixed through the installation hole I by bolts, and an upward opening positioning groove is formed among the auxiliary device bases; then hoisting the upper steel cutting column, adjusting the direction to fall into the opening positioning groove, and installing a connecting lug plate for temporary fixation; the auxiliary device supports are respectively arranged at the corresponding positions of the lower parts of the upper section steel columns; and adjusting bolts I and II on the auxiliary device base and the auxiliary device support are screwed respectively to enable the auxiliary device base and the auxiliary device support to respectively abut against the lower part of the upper section steel column and the upper surface of the auxiliary device base, and the plane position and the perpendicularity of the upper section steel column are adjusted through adjusting the adjusting bolts I and II on the auxiliary device base and the auxiliary device support respectively.
Compared with the prior art, the invention has the following advantages:
1. the position of the steel column is accurately regulated by using the bolts, so that the installation accuracy of the steel column is improved, and the engineering quality is ensured;
2. meanwhile, the opening positioning groove formed by the base of the auxiliary device improves the hoisting efficiency of the steel column and ensures that the hoisting operation is safer;
3. the adjusting device is simple in structure, convenient to install, and easy to operate and adjust the installation steel column.
Drawings
FIG. 1 is a schematic structural view of the steel structure stiff steel column installation position adjusting device of the present invention in example 1;
FIG. 2 is a side view of the adjustment device of FIG. 1;
FIG. 3 is a schematic view of the installation of the device for adjusting the installation position of the steel column of the steel structure according to the present invention in example 1;
FIG. 4 is a top view of the installed lower section steel column of FIG. 3;
FIG. 5 is a schematic view of the structure of the steel structure stiff steel column installation position adjusting device of the present invention in example 1;
FIG. 6 is a schematic structural view of an auxiliary device support of the steel structure stiff steel column mounting position adjusting device of the present invention in example 2;
fig. 7 is a partial sectional view of the adjusting device of embodiment 2 in the installation adjustment.
In the figure, the steel column is cut up in 1-upper section, steel column is cut down in 2-lower section, 3-auxiliary device base, 31-frid, 32-connection panel I, 33-adjustment panel I, 34-middle stiffener, 35-upper stiffener, 36-side stiffener I, 37-adjusting bolt I, 38-mounting hole I, 4-auxiliary device support, 41-adjustment panel II, 42-connection panel II, 43-side stiffener II, 44-adjusting bolt II, 45-plate bottom stiffener, 46-mounting hole II, 5-connection ear plate.
Description of the embodiments
The present invention will be described in detail with reference to the accompanying drawings.
Example 1
As shown in fig. 1, the device for adjusting the installation position of the stiff steel column of the steel structure adopts an auxiliary device base 3, and the auxiliary device base 3 comprises a groove plate 31, a connecting panel i 32, an adjusting panel i 33, a middle stiffening rib 34, an upper stiffening rib 35, side stiffening ribs i 36 and adjusting bolts i 37, and is combined with fig. 2. The upper stiffeners 35 and the middle stiffeners 34 are arranged in parallel, and the channel plates 31 are respectively connected with the middle parts of the upper stiffeners 35 and the middle stiffeners 34 in a vertical manner, and the upper ends of the channel plates extend outwards. The number of the side stiffening ribs I36 is two, and the side stiffening ribs I are arranged on the two sides of the base of the auxiliary device and are respectively and vertically connected with the two ends of the upper stiffening rib and the two ends of the middle stiffening rib. The adjusting panel I33 is fixedly arranged between the upper stiffening rib 35 and the middle stiffening rib 34, and the connecting panel I32 is fixedly arranged below the middle stiffening rib 34. The adjusting panel I33 is arranged in parallel with the connecting panel I32 and located on different planes, and the connecting panel I32 is located on the outer side. Two adjusting bolts I37 are symmetrically arranged on the adjusting panel I33. The connecting panel I32 is provided with a mounting hole I38.
Taking the installation and adjustment of the cross steel column as an example, combining with the illustration of fig. 3 and 4, the reserved holes are reserved at four corners of the lower steel column 2, then an auxiliary device base 3 is arranged in a double-sided distribution manner, 8 auxiliary device bases 3 are arranged in total, the corresponding installation holes I38 and the reserved holes are penetrated through by bolts for fixing, at the moment, the connecting panel I32 is tightly attached to the lower steel column 2, and a certain interval is reserved between the adjusting panel I33 and the lower steel column 2. The 8 auxiliary device bases 3 are provided with cross-shaped upward opening positioning grooves (the structure is also applicable to H-shaped steel columns, the difference is that the corresponding formed opening positioning grooves are H-shaped), the upper steel column is hoisted, and the adjusting direction falls into the opening positioning grooves. After the upper section steel column 1 is in place, the attachment lugs 5 are mounted for temporary fixation, as shown in fig. 5. At this time, the adjusting bolt I37 is screwed on to make the adjusting bolt I abut against the upper section steel column 1, and then the plane position of the upper section steel column 1 is adjusted by adjusting the screwing degree of the adjusting bolt I37.
Example 2
In this embodiment, on the basis of embodiment 1, an auxiliary device support 4 is added to the adjusting device, as shown in fig. 6. The auxiliary device support 4 comprises a connecting panel II 42, an adjusting panel II 41, side stiffening ribs II 43, adjusting bolts II 44 and plate bottom stiffening ribs 45. The connection panel II 42 and the adjustment panel II 41 are arranged perpendicular to each other. Two adjusting bolts II 44 are symmetrically arranged on the adjusting panel II 41. The two side stiffening ribs II 43 are respectively arranged at two sides of the auxiliary device support 4 and are vertically connected with two ends of the connecting panel II 42 and the adjusting panel II 41. The stiffening ribs 45 are vertically arranged below the adjusting panel II 41 and fixedly connected with the connecting panel II 42. The connection panel II 42 is provided with a mounting hole II 46.
When the installation adjustment is performed, after the upper steel cutoff column 1 and the lower steel cutoff column 2 in embodiment 1 are temporarily fixed by the connecting lug plate 5, the auxiliary device support 4 is installed: the four corners of the lower part of the upper section steel column 1 are also provided with reserved holes, 8 auxiliary device supports 4 are respectively arranged above the corresponding auxiliary device bases 3, and the auxiliary device supports are fixed on the upper section steel column 1 through bolts passing through the corresponding reserved holes and mounting holes II 46. At this time, as shown in fig. 7, the adjusting bolt ii 44 is located directly above the upper stiffener 35 of the corresponding auxiliary device chassis 3. The verticality of the upper section steel column 1 is adjusted by adjusting the screwing degree of the adjusting bolt II 44.
Claims (6)
1. The device for adjusting the installation position of the rigid steel column of the steel structure carries out field auxiliary installation on the rigid cross-shaped or H-shaped steel column; the method is characterized in that: the position adjusting device comprises an auxiliary device base; a connecting surface I is arranged below the auxiliary device base, and a mounting hole I is formed in the connecting surface I; an adjusting surface I is arranged above the auxiliary device base, and an adjusting bolt I is arranged on the adjusting surface I; the auxiliary device base is fixedly connected with the column head of the lower section steel column to be installed through a connecting surface I; when the upper steel column and the lower steel column are installed, the adjusting bolt I is abutted against the bottom of the upper steel column; the connecting surface I and the adjusting surface I are positioned on different planes, and the connecting surface I is close to the mounting plane of the lower section steel column; a plurality of auxiliary device bases are arranged on the column head of the lower section steel column to be installed, positioning grooves are formed between all auxiliary device bases arranged at the column head position of the same steel column, and the shape of the notch is matched with the structure of the steel column; the position adjusting device also comprises an auxiliary device support; the auxiliary device support comprises two mutually perpendicular connecting surfaces II and an adjusting surface II; the auxiliary device support is connected with the upper section steel column through a connecting surface II; an adjusting bolt II is arranged on the adjusting surface II; when the upper steel column and the lower steel column are installed, the adjusting bolt II is abutted against the upper surface of the corresponding auxiliary device base on the lower steel column; the auxiliary device base comprises a groove plate, a connecting panel I, an adjusting panel I, a middle stiffening rib, an upper stiffening rib and a side stiffening rib I; the upper stiffening ribs and the middle stiffening ribs are arranged in parallel, and the groove plates are respectively and vertically connected with the middle parts of the upper stiffening ribs and the middle stiffening ribs; the two side faces of the auxiliary device base are provided with side stiffening ribs I which are respectively and vertically connected with the two ends of the upper stiffening rib and the middle stiffening rib; the adjusting panel I is fixedly arranged between the upper stiffening rib and the middle stiffening rib to form the adjusting surface I; the connecting panel I is fixedly arranged below the middle stiffening rib to form the connecting surface I; the adjusting panel I is arranged in parallel with the connecting panel I and positioned on different planes, and the connecting panel I is positioned on the outer side; the auxiliary device support comprises a connecting panel II, an adjusting panel II and side stiffening ribs II; the connecting panel II and the adjusting panel II are mutually perpendicular to each other to form the connecting surface II and the adjusting surface II respectively; the two side stiffening ribs II are respectively arranged on two sides of the auxiliary device support and are vertically connected with two ends of the connecting panel II and two ends of the adjusting panel II.
2. The steel structure stiff steel column mounting position adjustment device according to claim 1, characterized in that: when the steel column to be installed is a cross-shaped steel column, 8 auxiliary device bases are arranged at the column head position of the lower section steel column, are respectively positioned at four corners of the cross-shaped steel column, are distributed on two sides, and form a cross-shaped positioning groove which is opened upwards through gaps among the 8 auxiliary device bases; the number of the auxiliary device supports is 8, and the auxiliary device supports are arranged at the corresponding positions of the auxiliary device bases of the lower part and the lower part of the upper steel cutting column.
3. The steel structure stiff steel column mounting position adjustment device according to claim 1, characterized in that: the auxiliary device support also comprises a plate bottom stiffening rib; the stiffening rib at the bottom of the plate is vertically arranged below the adjusting panel II of the auxiliary device support and fixedly connected with the connecting panel II of the auxiliary device support.
4. A steel structure stiff steel column mounting position adjustment device according to claim 3, characterized in that: the adjusting panel I of auxiliary device base is gone up along central bilateral symmetry and is equipped with two adjusting bolt I, and the adjusting panel II of auxiliary device support is gone up along central bilateral symmetry is equipped with two adjusting bolt II.
5. A method for adjusting the installation position of a steel structure stiff steel column by using the steel structure stiff steel column adjusting device as claimed in claim 1, which is characterized in that: firstly, installing the auxiliary device base at the corresponding position of the lower section steel column head, fixing the auxiliary device base and the lower section steel column through a bolt passing through the installation hole I, and forming an upward opening positioning groove between the auxiliary device bases; then hoisting the upper steel cutting column, adjusting the direction to fall into the opening positioning groove, and installing a connecting lug plate for temporary fixation; and (3) screwing an adjusting bolt I of the auxiliary device base to enable the adjusting bolt I to abut against the lower part of the upper section steel column, and adjusting the plane position of the upper section steel column by adjusting the adjusting bolt I of the auxiliary device base.
6. A method for adjusting the installation position of a steel structure stiff steel column by using the steel structure stiff steel column adjusting device as claimed in claim 1, which is characterized in that: firstly, installing the auxiliary device base at the corresponding position of the lower section steel column head, fixing the auxiliary device base and the lower section steel column through a bolt passing through the installation hole I, and forming an upward opening positioning groove between the auxiliary device bases; then hoisting the upper steel cutting column, adjusting the direction to fall into the opening positioning groove, and installing a connecting lug plate for temporary fixation; the auxiliary device supports are respectively arranged at the corresponding positions of the lower parts of the upper section steel columns; and the adjusting bolt I on the auxiliary device base and the adjusting bolt II on the auxiliary device support are respectively screwed to respectively abut against the lower part of the upper section steel column and the upper surface of the auxiliary device base, and the plane position and the verticality of the upper section steel column are respectively adjusted by adjusting the adjusting bolt I of the auxiliary device base and the adjusting bolt II of the auxiliary device support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609639.8A CN108590205B (en) | 2018-06-13 | 2018-06-13 | Device and method for adjusting installation position of steel structure stiff steel column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810609639.8A CN108590205B (en) | 2018-06-13 | 2018-06-13 | Device and method for adjusting installation position of steel structure stiff steel column |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108590205A CN108590205A (en) | 2018-09-28 |
| CN108590205B true CN108590205B (en) | 2024-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810609639.8A Active CN108590205B (en) | 2018-06-13 | 2018-06-13 | Device and method for adjusting installation position of steel structure stiff steel column |
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| Country | Link |
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| CN (1) | CN108590205B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112629508A (en) * | 2020-12-30 | 2021-04-09 | 上海建工五建集团有限公司 | Z-axis positioning device and positioning method for stiff steel column |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202544423U (en) * | 2012-04-19 | 2012-11-21 | 中国建筑第四工程局有限公司 | Hoisting structure of supporting steel column |
| CN202925954U (en) * | 2012-11-29 | 2013-05-08 | 未来（徐州）节能建筑系统有限公司 | Steel structure factory building assembly |
| CN203247859U (en) * | 2013-05-16 | 2013-10-23 | 中国十七冶集团有限公司 | Alignment device for butt joint perpendicularity of large steel columns |
| CN204917664U (en) * | 2015-09-28 | 2015-12-30 | 浙江中南建设集团钢结构有限公司 | Repeatedly usable's lifting device |
| CN206289993U (en) * | 2016-10-12 | 2017-06-30 | 中国建筑第八工程局有限公司 | Steel column butt joint misalignment of axe aligning tool |
| CN107795019A (en) * | 2017-10-18 | 2018-03-13 | 北京工业大学 | A kind of T-shaped cover plate connecting device of assembling type steel structure Special-Shaped Column bean column node |
| CN208329657U (en) * | 2018-06-13 | 2019-01-04 | 南通四建集团有限公司 | A kind of steel construction rigid steel pile installation site regulating device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8418997B2 (en) * | 2009-10-23 | 2013-04-16 | Frank Bastone | Extendable support column |
-
2018
- 2018-06-13 CN CN201810609639.8A patent/CN108590205B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202544423U (en) * | 2012-04-19 | 2012-11-21 | 中国建筑第四工程局有限公司 | Hoisting structure of supporting steel column |
| CN202925954U (en) * | 2012-11-29 | 2013-05-08 | 未来（徐州）节能建筑系统有限公司 | Steel structure factory building assembly |
| CN203247859U (en) * | 2013-05-16 | 2013-10-23 | 中国十七冶集团有限公司 | Alignment device for butt joint perpendicularity of large steel columns |
| CN204917664U (en) * | 2015-09-28 | 2015-12-30 | 浙江中南建设集团钢结构有限公司 | Repeatedly usable's lifting device |
| CN206289993U (en) * | 2016-10-12 | 2017-06-30 | 中国建筑第八工程局有限公司 | Steel column butt joint misalignment of axe aligning tool |
| CN107795019A (en) * | 2017-10-18 | 2018-03-13 | 北京工业大学 | A kind of T-shaped cover plate connecting device of assembling type steel structure Special-Shaped Column bean column node |
| CN208329657U (en) * | 2018-06-13 | 2019-01-04 | 南通四建集团有限公司 | A kind of steel construction rigid steel pile installation site regulating device |
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| Publication number | Publication date |
|---|---|
| CN108590205A (en) | 2018-09-28 |
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