CN113818437A - Anti-floating anchor rod tensioning equipment - Google Patents
Anti-floating anchor rod tensioning equipment Download PDFInfo
- Publication number
- CN113818437A CN113818437A CN202111291974.6A CN202111291974A CN113818437A CN 113818437 A CN113818437 A CN 113818437A CN 202111291974 A CN202111291974 A CN 202111291974A CN 113818437 A CN113818437 A CN 113818437A
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- Prior art keywords
- movable
- floating anchor
- positioning
- clamping
- strip
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
- E02D31/12—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure against upward hydraulic pressure
Abstract
The invention discloses anti-floating anchor rod tensioning equipment which comprises a steel plate base, a transfer handle, I-shaped steel, a jack, anti-floating anchor rod reinforcing steel bars, a bolt sleeve, a positioning assembly and a clamping assembly, wherein the steel plate base is provided with a steel plate base; according to the anti-floating anchor rod tensioning device, the main body is the base formed by welding and combining the I-steel and the steel plate base, the transfer work is facilitated, the turnover use efficiency is high, the jack can be well limited in position through the positioning assembly and the clamping assembly for the jack, the working stability is guaranteed, the actual construction requirement can be met, the anti-floating anchor rod tensioning work quality is improved, the material waste can be effectively reduced, and the construction economic benefit is improved.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to an anti-floating anchor rod tensioning device.
Background
In the construction process of building foundation, the construction and application of anti-floating anchor rods are increasing day by day, and the anti-floating anchor rods are one of anti-floating measures of underground structures of building engineering, refer to structural members arranged for resisting upward displacement of buildings on the anti-floating anchor rods, are related to the height and change conditions of underground water level and are opposite to the stress direction of compression-resistant piles.
The stretch-draw of anti-floating anchor bolt often need be carried out after anti-floating anchor bolt construction is accomplished, the supporting shoe and the channel-section steel separation of traditional tensioning equipment, this is comparatively troublesome to its transport to jack equipment fixing roughness is relatively poor, and the position is firm inadequately, can produce the offset when carrying out the stretch-draw construction, can not satisfy actual construction demand, and it is low to its stretch-draw equipment turnover availability factor, leads to the construction economic benefits to be low.
Therefore, the invention provides an anti-floating anchor rod tensioning device for solving the problems.
Disclosure of Invention
The invention aims to provide anti-floating anchor rod tensioning equipment to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: an anti-floating anchor rod tensioning device comprises a steel plate base, a transfer handle, I-shaped steel, a jack, anti-floating anchor rod reinforcing steel bars, a bolt sleeve, a positioning assembly and a clamping assembly;
the anti-floating anchor rod steel bar fixing device comprises a steel plate base, wherein transfer handles are symmetrically arranged at two ends of the steel plate base in an integrated forming mode, the steel plate base is symmetrically and fixedly arranged at the bottom end of an I-shaped steel, supporting plates are arranged on the I-shaped steel in an equidistant welding mode, positioning assemblies are connected to two supporting plates arranged at the upper end of the I-shaped steel, a jack is fixedly arranged on the supporting plates through the positioning assemblies and symmetrically arranged on one side of a fixing plate, a clamping groove is formed in the other side of the fixing plate, a base plate is arranged in the clamping groove in a matched and clamped mode, an anti-floating anchor rod steel bar penetrates through the base plate and the fixing plate, and a bolt sleeve is arranged on the anti-floating anchor rod steel bar in a threaded connection mode;
the bolt sleeve is characterized in that handles are symmetrically arranged on two sides of the bolt sleeve in an integrally formed mode, and the positioning assembly is locked through the clamping assembly.
Preferably, the clamping assembly is arranged at the side position of the positioning assembly, and two groups are arranged.
Preferably, the positioning assembly comprises a positioning ring, a movable strip, a movable block, an anti-skid bump, an arc extrusion chute, a locking ring and an auxiliary convex column, the positioning ring is fixedly arranged on the supporting plate, and the positioning ring is provided with movable strips at equal intervals, one end of each movable strip is movably arranged in the arc extrusion chute, the other end of each movable strip is integrally formed with a movable block, the movable block is provided with first return springs symmetrically at the end connected with the movable strip, the other end of the first return spring is fixedly arranged in the positioning ring, the end surface of one end of the movable block is arranged to be an arc surface, the arc surface is integrally formed with anti-skid lugs at equal intervals, the arc extrusion chutes are equidistantly arranged in the locking ring, the locking ring is arranged on the positioning ring in a threaded connection way, and the locking ring is symmetrically and fixedly provided with auxiliary convex columns, and the locking ring is locked and fixed through the arranged clamping assembly.
Preferably, the arc-shaped extrusion chutes correspond to the arrangement positions of the movable strips and the movable blocks, and are arranged in the same number of groups, and four groups are arranged.
Preferably, the width of the end section of the movable strip is smaller than the width of the notch of the arc-shaped extrusion chute.
Preferably, the clamping assembly comprises a locking slot, a fixed body, a movable insert, a positioning clamp strip, a circular slot, a clamping pin and a pull ring, the locking slot is arc-shaped at equal intervals and is arranged on the outer side wall of the locking ring, the fixed body is fixedly arranged on the support plate and is arranged at the side position of the locking ring, the movable insert is movably arranged in the fixed body, the positioning clamp strip is integrally formed at one end of the movable insert, the movable insert is symmetrically provided with a second reset spring at the end connected with the positioning clamp strip, the other end of the second reset spring is fixedly arranged in the fixed body, the circular slot is arranged at one side of the movable insert, the clamping pin is movably inserted and arranged in the fixed body and is arranged at the position of the movable insert, the lugs are symmetrically arranged at the two sides of the clamping pin, and a third reset spring is arranged at one side of the lugs, the other end of the third return spring is fixedly arranged in the fixed body.
Preferably, the bayonet lock and the round bayonet lock are arranged at corresponding positions, are the same in number of groups and diameter, and are connected in a matched and clamped mode.
Preferably, the positioning clamping strip corresponds to the locking clamping groove in position, and the width of the cross section of the end part of the positioning clamping strip is equal to the width of the notch of the locking clamping groove.
Compared with the prior art, the invention has the beneficial effects that:
according to the anti-floating anchor rod tensioning device, the main body is the base formed by welding and combining the I-steel and the steel plate base, the transfer work is facilitated, the turnover use efficiency is high, the jack can be well limited in position through the positioning assembly and the clamping assembly for the jack, the working stability is guaranteed, the actual construction requirement can be met, the anti-floating anchor rod tensioning work quality is improved, the material waste can be effectively reduced, and the construction economic benefit is improved.
Drawings
FIG. 1 is a top view of a structural joint according to the present invention;
FIG. 2 is an enlarged view of a portion of the fixing plate and the backing plate shown in FIG. 1;
FIG. 3 is an enlarged view of the support plate, the positioning assembly and the clamping assembly shown in FIG. 1;
FIG. 4 is a bottom view of the structural attachment of the present invention;
FIG. 5 is an enlarged partial view of the structural joint of FIG. 4 according to the present invention;
FIG. 6 is a right side view, partially in section, of the positioning assembly and clamping assembly in accordance with the present invention;
FIG. 7 is an enlarged partial view of the structural joint of FIG. 6 according to the present invention;
FIG. 8 is a left side view, partially in section, of the positioning assembly and clamping assembly in accordance with the present invention;
fig. 9 is a partially enlarged view of the structural connection of fig. 8 according to the present invention.
In the figure: the steel plate base 1, transport handle 2, I-steel 3, backup pad 4, jack 5, fixed plate 6, draw-in groove 7, backing plate 8, anti-floating anchor rod reinforcing bar 9, bolt sleeve 10, handle 11, locating component 12, holding ring 1201, activity strip 1202, activity piece 1203, skid proof block 1204, arc extrusion chute 1205, locking ring 1206, supplementary projection 1207, chucking subassembly 13, locking draw-in groove 1301, fixed body 1302, activity inserted block 1303, location draw-in bar 1304, circular draw-in groove 1305, bayonet 1306, pull ring 1307.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, and all other embodiments obtained by a person of ordinary skill in the art without any inventive work, belong to the scope of protection of the present invention.
Referring to fig. 1 to 9, the present invention provides a technical solution: the invention relates to anti-floating anchor rod tensioning equipment which comprises a steel plate base 1, a transfer handle 2, I-shaped steel 3, a jack 5, anti-floating anchor rod reinforcing steel bars 9, a bolt sleeve 10, a positioning assembly 12 and a clamping assembly 13, wherein the anti-floating anchor rod reinforcing steel bars are fixedly connected with the steel plate base;
the steel plate base is characterized in that transfer handles 2 are symmetrically arranged at two ends of a steel plate base 1 in an integrated forming mode, the steel plate base 1 is symmetrically and fixedly arranged at the bottom end of an I-shaped steel 3, supporting plates 4 are arranged on the I-shaped steel 3 in an equidistant welding mode, positioning assemblies 12 are connected and arranged on two supporting plates 4 arranged at the upper end of the I-shaped steel 3, a jack 5 is fixedly arranged on the supporting plates 4 through the positioning assemblies 12, the jack 5 is symmetrically arranged on one side of a fixing plate 6, a clamping groove 7 is formed in the other side of the fixing plate 6, a base plate 8 is arranged in the clamping groove 7 in a matched and clamped mode, anti-floating anchor rod reinforcing steel bars 9 penetrate through the base plate 8 and the fixing plate 6, and bolt sleeves 10 are arranged on the anti-floating anchor rod reinforcing steel bars 9 in a threaded connection mode;
The positioning assembly 12 here includes a positioning ring 1201, a movable bar 1202, a movable block 1203, an anti-slip bump 1204, an arc-shaped extrusion chute 1205, a locking ring 1206, and an auxiliary convex pillar 1207, the positioning ring 1201 is fixedly disposed on the support plate 4, the movable bar 1202 is movably disposed in the positioning ring 1201 at equal intervals, one end of the movable bar 1202 is movably disposed in the arc-shaped extrusion chute 1205, the other end is integrally formed with a movable block 1203, where the arc-shaped extrusion chute 1205 is corresponding to the movable bar 1202 and the movable block 1203 in the same number of groups, four groups are disposed, where the width of the cross section of the end of the movable bar 1202 is required to be smaller than the width of the slot of the arc-shaped extrusion chute 1205, the movable block 1203 is symmetrically disposed with a first return spring at the end connected with the movable bar 1202, the other end of the first return spring is fixedly disposed in the positioning ring 1201, and the end face of one end of the movable block 1203 is disposed as an arc-shaped face, the arc-shaped surface is provided with anti-slip lugs 1204 at equal intervals, the arc-shaped extrusion chutes 1205 are arranged in the locking ring 1206 at equal intervals, the locking ring 1206 is in threaded connection with the positioning ring 1201, the auxiliary convex columns 1207 are symmetrically and fixedly arranged on the locking ring 1206, and the locking ring 1206 is locked and fixed through the arranged clamping assembly 13.
The clamping assembly 13 here comprises a locking slot 1301, a fixed body 1302, a movable insert block 1303, a positioning strip 1304, a circular slot 1305, a pin 1306, and a pull ring 1307, the locking slot 1301 is equidistantly and arcuately arranged on the outer side wall of the locking ring 1206, the fixed body 1302 is fixedly arranged on the support plate 4 and is arranged at the side position of the locking ring 1206, the movable insert block 1303 is movably arranged in the fixed body 1302, the positioning strip 1304 is integrally formed at one end of the movable insert block 1303, the positioning strip 1304 corresponds to the locking slot 1301, the cross-sectional width of the end of the positioning strip 1304 is equal to the width of the notch of the locking slot 1301, the movable insert block 1303 is symmetrically provided with a second return spring at the end connected with the positioning strip 1304, the other end of the second return spring is fixedly arranged in the fixed body 1302, the circular slot 1305 is arranged at one side of the movable insert block 1303, the bayonet lock 1306 is movably inserted into the fixed body 1302 and arranged at the side position of the movable insertion block 1303, the bayonet lock 1306 and the circular bayonet lock 1305 are correspondingly arranged, the number of the arranged groups is the same, the diameter of the arranged groups is equal, the bayonet lock 1306 and the circular bayonet lock are matched and clamped, protruding pieces are symmetrically arranged on two sides of the bayonet lock 1306 in an integrally formed mode, a third return spring is arranged on one side of each protruding piece in an integrally formed mode, and the other end of the third return spring is fixedly arranged in the fixed body 1302.
The working principle is as follows: when the anti-floating anchor rod tensioning construction is carried out, the bottom end of a jack 5 is placed in a positioning ring 1201 on a support plate 4, then an auxiliary convex column 1207 drives a locking ring 1206 to rotate, so that an arc-shaped extrusion inclined groove 1205 in the locking ring 1206 extrudes a movable strip 1202, the movable strip 1202 further pushes a movable block 1203 to clamp and lock the side wall of the jack 5, an anti-slip bump 1204 arranged on the end face of the movable block 1203 is used for improving the clamping stability of the movable strip, further the position stability of the jack 5 is improved, next, a movable insert 1303 is pressed, the movable insert 1303 pushes a positioning clamping strip 1304 to be clamped into a locking clamping groove 1301 at the corresponding position of the locking ring 1206, further, the position of the locking ring 1206 is locked, meanwhile, a circular clamping groove 1305 arranged on one side of the movable insert 1303 reaches a clamping position 1306 position, and the clamping pin 1306 is clamped into the circular clamping groove 1305 under the action of a third return spring, make activity inserted block 1303 position locking, and then can accomplish fast to jack 5's locking work, moreover, the steam generator is simple in operation, high durability and convenient use, and when jack 5 placed the holding ring 1201 on relevant position in, anti-floating anchor bar 9 is passed at the fixed plate 6 center of setting, later pass anti-floating anchor bar 9 with backing plate 8 and with its draw-in groove 7 on fixed plate 6 in, screw the cover on anti-floating anchor bar 9 with bolt sleeve 10 again at last, extrude backing plate 8 can, can carry out anti-floating anchor bar stretch-draw work after that.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an anti-floating anchor rod tensioning equipment which characterized in that: the anti-floating anchor rod steel bar transportation device comprises a steel plate base (1), a transportation handle (2), an I-shaped steel (3), a jack (5), an anti-floating anchor rod steel bar (9), a bolt sleeve (10), a positioning assembly (12) and a clamping assembly (13);
the two ends of the steel plate base (1) are integrally formed and symmetrically provided with transfer handles (2), the steel plate bases (1) are symmetrically and fixedly arranged at the bottom end of the I-shaped steel (3), the I-shaped steel (3) is equidistantly welded with supporting plates (4), and two support plates (4) arranged at the upper end of the I-shaped steel (3) are connected with a positioning component (12), the jack (5) is fixedly arranged on the support plate (4) through a positioning component (12), the jacks (5) are symmetrically arranged on one side of the fixed plate (6), the other side of the fixed plate (6) is provided with a clamping groove (7), the clamping groove (7) is provided with a backing plate (8) in a matched and clamped mode, the anti-floating anchor rod steel bar (9) penetrates through the backing plate (8) and the fixing plate (6), and the anti-floating anchor rod steel bar (9) is provided with a bolt sleeve (10) in a threaded connection way;
the bolt sleeve is characterized in that handles (11) are symmetrically arranged on two sides of the bolt sleeve (10) in an integrally formed mode, and the positioning assembly (12) is locked through the arranged clamping assembly (13).
2. An anti-floating anchor tensioning apparatus according to claim 1, wherein: the clamping assembly (13) is arranged at the side position of the positioning assembly (12) and is provided with two groups.
3. An anti-floating anchor tensioning apparatus according to claim 1, wherein: the positioning assembly (12) comprises a positioning ring (1201), a movable strip (1202), a movable block (1203), an anti-skidding convex block (1204), an arc-shaped extrusion chute (1205), a locking ring (1206) and an auxiliary convex column (1207), wherein the positioning ring (1201) is fixedly arranged on the supporting plate (4), the movable strip (1202) is movably arranged in the positioning ring (1201) at an equal distance, one end of the movable strip (1202) is movably arranged in the arc-shaped extrusion chute (1205), the movable block (1203) is integrally formed at the other end of the movable strip, first return springs are symmetrically arranged at the ends, connected with the movable strip (1202), of the movable blocks (1203) in an integrated manner, the other ends of the first return springs are fixedly arranged in the positioning ring (1201), the end face of one end of each movable block (1203) is arranged to be an arc-shaped face, the anti-skidding convex blocks (1204) are integrally formed on the arc-shaped face at equal distances, the arc-shaped extrusion chute (1205) is equidistantly arranged in the locking ring (1206), the locking ring (1206) is arranged on the positioning ring (1201) in a threaded connection mode, auxiliary convex columns (1207) are symmetrically and fixedly arranged on the locking ring (1206), and the locking ring (1206) is locked and fixed through the arranged clamping assembly (13).
4. An anti-floating anchor tensioning apparatus according to claim 3, wherein: the arc-shaped extrusion chute (1205) corresponds to the arrangement positions of the movable strip (1202) and the movable block (1203), the number of the arranged groups is the same, and four groups are arranged.
5. An anti-floating anchor tensioning apparatus according to claim 4, wherein: the width of the end section of the movable bar (1202) is less than the width of the slot opening of the arc extrusion chute (1205).
6. An anti-floating anchor tensioning apparatus according to claim 3, wherein: the clamping assembly (13) comprises a locking clamping groove (1301), a fixed body (1302), a movable inserting block (1303), a positioning clamping strip (1304), a circular clamping groove (1305), a clamping pin (1306) and a pull ring (1307), wherein the locking clamping grooves (1301) are equidistantly arranged on the outer side wall of the locking ring (1206) in an arc shape, the fixed body (1302) is fixedly arranged on the supporting plate (4) and is arranged at the side position of the locking ring (1206), the movable inserting block (1303) is movably arranged in the fixed body (1302), one end of the movable inserting block (1303) is integrally provided with the positioning clamping strip (1304), the movable inserting block (1303) is integrally and symmetrically provided with a second reset spring at the end connected with the positioning clamping strip (1304), the other end of the second reset spring is fixedly arranged in the fixed body (1302), one side of the movable inserting block (1303) is provided with the circular clamping groove (1305), and the clamping pin (1306) is movably inserted and arranged in the fixed body (1302), and the locking pin is arranged at the side position of the movable insertion block (1303), the two sides of the locking pin (1306) are integrally and symmetrically provided with protruding pieces, one side of each protruding piece is integrally and symmetrically provided with a third return spring, and the other end of each third return spring is fixedly arranged in the fixed body (1302).
7. An anti-floating anchor tensioning apparatus according to claim 6, wherein: the bayonet pins (1306) and the circular bayonet slots (1305) are corresponding in arrangement position, identical in arrangement number and diameter arrangement, and are connected in a matched clamping mode.
8. An anti-floating anchor tensioning apparatus according to claim 6, wherein: the positioning clamping strip (1304) corresponds to the locking clamping groove (1301) in arrangement position, and the section width of the end part of the positioning clamping strip (1304) is equal to the width of the groove opening of the locking clamping groove (1301).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111291974.6A CN113818437A (en) | 2021-11-03 | 2021-11-03 | Anti-floating anchor rod tensioning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111291974.6A CN113818437A (en) | 2021-11-03 | 2021-11-03 | Anti-floating anchor rod tensioning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113818437A true CN113818437A (en) | 2021-12-21 |
Family
ID=78919415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111291974.6A Withdrawn CN113818437A (en) | 2021-11-03 | 2021-11-03 | Anti-floating anchor rod tensioning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113818437A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114515932A (en) * | 2022-04-01 | 2022-05-20 | 山东中建八局投资建设有限公司 | Butt joint device and butt joint method for steel structure beams |
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| JP2005133396A (en) * | 2003-10-29 | 2005-05-26 | Anderson Technology Kk | Load adjusting type jack device and anchoring method using the device |
| CN102839692A (en) * | 2012-09-14 | 2012-12-26 | 中建一局集团第五建筑有限公司 | Combined tool for anti-pulling test of raft anti-floating anchor and test method |
| CN103510552A (en) * | 2013-10-12 | 2014-01-15 | 青岛理工大学 | Creep test loading device for non-metal anti-floating anchor |
| CN107621412A (en) * | 2017-09-30 | 2018-01-23 | 青岛理工大学 | A kind of quick pull-out test device of the nonmetallic anti-float anchor rod of enlarged footing |
| CN112744451A (en) * | 2021-01-18 | 2021-05-04 | 党继民 | Heavy coil of strip commodity circulation is with transporting external member |
| CN213682241U (en) * | 2020-05-11 | 2021-07-13 | 湖北省建筑工程质量监督检验测试中心 | Anti-floating anchor rod static load test system |
| CN113530001A (en) * | 2021-08-12 | 2021-10-22 | 中建八局第二建设有限公司 | Pier type shock insulation support and construction method thereof |
| CN113565119A (en) * | 2021-08-19 | 2021-10-29 | 潍坊学院 | High-rise building steel-concrete foundation structure capable of reducing settlement and construction process |
-
2021
- 2021-11-03 CN CN202111291974.6A patent/CN113818437A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005133396A (en) * | 2003-10-29 | 2005-05-26 | Anderson Technology Kk | Load adjusting type jack device and anchoring method using the device |
| CN102839692A (en) * | 2012-09-14 | 2012-12-26 | 中建一局集团第五建筑有限公司 | Combined tool for anti-pulling test of raft anti-floating anchor and test method |
| CN103510552A (en) * | 2013-10-12 | 2014-01-15 | 青岛理工大学 | Creep test loading device for non-metal anti-floating anchor |
| CN107621412A (en) * | 2017-09-30 | 2018-01-23 | 青岛理工大学 | A kind of quick pull-out test device of the nonmetallic anti-float anchor rod of enlarged footing |
| CN213682241U (en) * | 2020-05-11 | 2021-07-13 | 湖北省建筑工程质量监督检验测试中心 | Anti-floating anchor rod static load test system |
| CN112744451A (en) * | 2021-01-18 | 2021-05-04 | 党继民 | Heavy coil of strip commodity circulation is with transporting external member |
| CN113530001A (en) * | 2021-08-12 | 2021-10-22 | 中建八局第二建设有限公司 | Pier type shock insulation support and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114515932A (en) * | 2022-04-01 | 2022-05-20 | 山东中建八局投资建设有限公司 | Butt joint device and butt joint method for steel structure beams |
| CN114515932B (en) * | 2022-04-01 | 2023-11-17 | 山东中建八局投资建设有限公司 | Butt joint device and butt joint method for steel structure beams |
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Application publication date: 20211221 |
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| WW01 | Invention patent application withdrawn after publication |