CN209799022U - semicircular bolt clamping ring component - Google Patents
semicircular bolt clamping ring component Download PDFInfo
- Publication number
- CN209799022U CN209799022U CN201822244098.1U CN201822244098U CN209799022U CN 209799022 U CN209799022 U CN 209799022U CN 201822244098 U CN201822244098 U CN 201822244098U CN 209799022 U CN209799022 U CN 209799022U
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- Prior art keywords
- semicircular
- bolt
- round steel
- shaped
- semi
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- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 122
- 239000010959 steel Substances 0.000 claims abstract description 122
- 238000009434 installation Methods 0.000 claims abstract description 6
- 238000010276 construction Methods 0.000 abstract description 14
- 239000000463 material Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000002390 adhesive tape Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000009739 binding Methods 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 108010068370 Glutens Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 235000021312 gluten Nutrition 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
A semicircular bolt clamping ring component comprises a semicircular round steel bolt, a semicircular plastic pipe and a reversed V-shaped clamping piece, wherein thread sections are arranged at two ends of the semicircular round steel bolt, the tail ends of two vertical surfaces of the reversed V-shaped clamping piece are provided with a left connecting section and a right connecting section which are extended and parallel to the top surface, mounting holes are respectively formed in the left connecting section and the right connecting section, the semicircular round steel bolt is sleeved in the semicircular plastic pipe in a mounting state, and the thread sections at two ends of the semicircular round steel bolt extend into the left mounting hole and the right mounting hole of the reversed V-shaped clamping piece and are connected through nuts; the construction method for fixing the overhanging I-shaped steel by using the snap ring assembly comprises the steps of construction preparation, manufacturing of the semicircular bolt snap ring assembly, installation of the semicircular bolt embedded part, concrete pouring, installation of the overhanging I-shaped steel and recovery of the semicircular bolt. The snap ring component has the advantages of simple structure and low cost, the construction method for fixing the overhanging I-beam by using the snap ring component is safe and reliable, labor and material are saved, the snap ring component is easy to recover, and the design requirement of safety and stability of the overhanging I-beam can be met.
Description
Technical Field
The utility model relates to a construction equipment especially relates to a semi-circular bolt snap ring subassembly that is used for fixed I-steel construction of encorbelmenting.
Background
In the construction of a main structure of a site building, before an overhanging type outer frame is not erected, overhanging I-shaped steel of the outer frame needs to be erected, and after finishing the decoration project of the outer wall of the building, the outer frame is dismantled and the I-shaped steel is dismantled; the I-steel must be fixed to the I-steel that sets up the outrigger, and the I-steel that encorbelments of fixed outrigger generally adopts "U" shape bolt snap ring built-in fitting at present, and the pre-buried mode of "U" shape bolt snap ring built-in fitting generally has two kinds:
1. Direct pre-buried formula "U" shape bolt snap ring built-in fitting, promptly: the U-shaped bolt snap ring with the required height is machined, the mechanical teeth are cut at the two tail ends of the snap ring, the U-shaped bolt snap ring is embedded in the specified position of the I-shaped steel to be overhung, the U-shaped bolt snap ring is bound with floor slab ribs and gluten to be fixed (the position is ensured to be correct and the U-shaped bolt snap ring is perpendicular to a floor slab), the I-shaped steel is placed in the U-shaped bolt snap ring after concrete is poured (the concrete meets the hardness requirement), and the two tail ends of the U-shaped bolt snap ring are connected through an angle steel press block and fixed through nuts, so that the purpose of fixing the overhung I-shaped.
the pre-embedding technology has the following defects:
(1) the material waste is more: the U-shaped bolt clamping ring embedded part cannot be detached, recycled and taken out for reuse after being used, and does not meet the requirements of green energy-saving concept;
(2) the labor consumption is more: after the U-shaped bolt clamping ring embedded part is used, the part of the embedded part, which exceeds the floor slab, needs to be manually cut, and the cut part cannot be reused, so that the waste of materials such as round steel, grinding wheels and the like is caused, and a large amount of manpower and material resources are consumed;
(3) influence floor waterproof function: round steel left in the floor after the U-shaped bolt snap ring embedded part is cut is easy to rust and corrode when meeting water, and hidden danger that water leakage of the floor is possibly caused is left.
2. run through floor formula "U" shape bolt snap ring built-in fitting. Namely: after the floor slab template is installed and the floor slab reinforcing steel bars are bound, a plastic pipe is placed at a preset position and bound by the U-shaped reinforcing steel bars to fix the position, the U-shaped round steel embedded part is placed in the plastic pipe upside down, after concrete is poured (the concrete is hardened to meet the requirement), the floor slab template is dismantled, I-shaped steel penetrates through the U shape, and then the floor slab bottom is connected by an angle steel pressing block and fixed by nuts.
the pre-embedding technology has the following defects:
(1) The construction is inconvenient: the U-shaped bolt snap ring embedded part needs to be additionally provided with a U-shaped steel bar for fixing a plastic pipe before concrete is poured, after the concrete is poured, the I-shaped steel needs to penetrate through the U-shaped middle part when placed, cannot be hoisted by a tower crane, and needs to be constructed on the top of the next floor when dismantled, so that inconvenience is brought to construction;
(2) Long time lag: the U-shaped bolt clamp ring embedded part needs to meet the requirement of complete hardening of floor slab concrete, a floor slab template can be disassembled, the U-shaped bolt clamp ring can be reinforced, the waiting time is long, and construction is not facilitated;
(3) influence floor waterproof function: after the U-shaped bolt clamp ring embedded part is used and removed, the position of the plastic pipe can form a hole, and a water leakage point is easily formed due to improper post-treatment, so that the floor is not favorable for water prevention.
SUMMERY OF THE UTILITY MODEL
an object of the utility model is to provide a semi-circular bolt snap ring subassembly for fixing I-steel construction of encorbelmenting to overcome the above-mentioned not enough that prior art exists.
The utility model adopts the technical proposal that:
A semicircular bolt clamping ring component comprises a semicircular bolt embedded part and a clamping part shaped like a Chinese character 'ji', wherein the semicircular bolt embedded part comprises a semicircular round steel bolt and a semicircular plastic pipe, the semicircular round steel bolt is of an open semicircular structure made of round steel, the middle of the open semicircular round steel is a semicircular section, the two ends of the open semicircular round steel are thread sections, the diameter of threads of the thread sections is slightly smaller than that of the round steel, and the opening width of the semicircular round steel bolt, namely the diameter of the semicircular section is larger than that of an outer frame cantilever I-shaped steel to be fixed;
the semicircular diameter of the semicircular plastic pipe corresponds to the diameter of the semicircular section of the semicircular round steel bolt, the aperture of the semicircular plastic pipe is slightly larger than the diameter of the semicircular round steel bolt, the semicircular round steel bolt is sleeved in the semicircular plastic pipe in an installation state, and the thread sections at the two ends of the semicircular round steel bolt are exposed out of the outer end of the semicircular plastic pipe;
the 'n' -shaped clamping piece is of an open 'n' -shaped structure made of flat steel, the top surface of the 'n' -shaped clamping piece is perpendicular to two vertical surfaces, the width and the height of the 'n' -shaped opening are both larger than the width and the height of an outer frame cantilever I-shaped steel to be fixed, the tail ends of the two vertical surfaces of the 'n' -shaped clamping piece are provided with extended connecting sections parallel to the top surface, mounting holes are respectively formed in the connecting sections, the central distance between the mounting hole in the left connecting section and the mounting hole in the right connecting section corresponds to the opening width of a semicircular round steel bolt, and the thread sections at the two ends of the semicircular round steel bolt of the semicircular bolt embedded part extend into the left mounting hole and the right mounting hole of the 'n' -shaped clamping piece and are connected through nuts in the mounting state.
the further technical scheme is as follows:
the semicircular plastic pipe is a semicircular PVC plastic pipe.
Since the technical scheme is used, the utility model relates to a semicircular bolt snap ring subassembly has following beneficial effect:
1. The semicircular bolt snap ring component has the advantages that the structure is simple, the cost is low, the overhanging I-shaped steel is fixed by the semicircular bolt snap ring component, the labor and the materials are saved, the design requirement of the original design on the safety and the stability of the overhanging I-shaped steel can be met, the semicircular bolt snap ring component (the semicircular round steel bolt and the U-shaped tightening piece) is easy to recycle, the influence on the structure is less after the recycling, and the requirements of engineering material saving and economic application are met;
2. The semicircular PVC plastic pipe is used as a sleeve of the semicircular round steel bolt, and the exposed section of the semicircular round steel bolt and the connecting position of the semicircular round steel bolt and the semicircular plastic pipe are wrapped by the transparent adhesive tape, so that the semicircular bolt can be effectively prevented from contacting concrete, the damage to the assembly is reduced to the greatest extent, and the semicircular round steel bolt can be conveniently recycled;
3. the semicircular round steel bolt is coated with a release agent before being placed into the semicircular plastic pipe, so that the bolt can be smoothly taken out in a side-rotating manner during dismantling;
4. Saving material, saving labour: the semicircular bolt snap ring component does not need to be cut after being used, so that steel and grinding wheels required by cutting can be saved, and labor consumed by round steel cutting can be saved;
5. Effectively reduce and prevent that the floor from leaking: after the semicircular bolt snap ring assembly is used, the semicircular bolt can be taken out, the waterproof function of a floor slab cannot be influenced because round steel is embedded in the floor slab (the round steel is easily rusted and corroded when the round steel is embedded in the floor slab when meeting water, so that the waterproof function of the floor slab cannot be influenced because the holes of the semicircular plastic pipe left in the floor slab are filled with mortar; when the semicircular bolt embedded part is installed, the semicircular bolt embedded part is vertical to the template, meanwhile, the thickness of a protective layer of 10mm is ensured between the lower surface of the semicircular plastic pipe and the template, and water leakage at the position of the floor slab embedded semicircular plastic pipe can be effectively prevented.
the technical features of a semicircular bolt snap ring assembly of the present invention will be further described with reference to the accompanying drawings and examples.
drawings
FIG. 1 is a schematic view of a tapping round steel;
FIG. 2 is a schematic view of a semicircular bolt structure;
FIG. 3 is a schematic view of a semi-circular bolt embedment structure for wrap sealing;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;
FIG. 5 is a schematic structural view of a "n" shaped fastener;
fig. 6 is a schematic view of a semicircular bolt snap ring assembly of the present invention;
FIG. 7 is a schematic view of a semicircular bolt embedment structure mounted on a template;
FIG. 8 is a schematic structural view of a semicircular bolt embedded part after floor slab concrete is poured;
Fig. 9 is a schematic structural view of a semicircular bolt snap ring assembly used for fixing an overhanging i-shaped steel;
FIG. 10 is a schematic structural view of a hole after removal of an overhanging I-shaped steel, a reversed V-shaped hoop and a semicircular bolt;
FIG. 11 is a schematic structural view of hole-filling mortar;
In the figure:
1-tapping round steel, 2-semicircular round steel bolt, 21-thread section, 22-semicircular section, R-semicircular radius, 3-inverted V-shaped tightening piece, 31-top surface, 32-upright surface, 33-left and right connecting sections, 34-mounting hole, 4-transparent adhesive tape, 5-nut, 6-gasket, 7-elastic sheet, 8-release agent, 9-semicircular plastic pipe, 10-reinforcing rib, 11-iron nail, 12-template, 13-concrete, 14-I-steel, 15-cement mortar and 16-wood wedge.
Detailed Description
a semicircular bolt clamping ring component comprises a semicircular bolt embedded part and a clamping part 3 shaped like a Chinese character 'ji', wherein the semicircular bolt embedded part comprises a semicircular round steel bolt 2 and a semicircular plastic pipe 9, the semicircular round steel bolt is an open semicircular structure made of round steel, the middle of the open semicircular round steel is a semicircular section 22, the two ends of the open semicircular round steel are thread sections 21, the diameter of threads of the thread sections is slightly smaller than that of the round steel, and the opening width of the semicircular round steel bolt, namely the diameter of the semicircular section is larger than that of an outer frame cantilever I-steel 14 to be fixed;
the semicircular diameter of the semicircular plastic pipe corresponds to the diameter of the semicircular section of the semicircular round steel bolt, the aperture of the semicircular plastic pipe is slightly larger than the diameter of the semicircular round steel bolt, the semicircular round steel bolt is sleeved in the semicircular plastic pipe in an installation state, and the thread sections at the two ends of the semicircular round steel bolt are exposed out of the outer end of the semicircular plastic pipe;
the 'n' -shaped clamp part 3 is of an open 'n' -shaped structure made of flat steel, the top surface 31 of the 'n' -shaped clamp part is perpendicular to two vertical surfaces 32, the width and the height of the 'n' -shaped opening are both larger than the width and the height of an outer frame cantilever I-steel 14 to be fixed, the tail ends of the two vertical surfaces of the 'n' -shaped clamp part are provided with extended connecting sections 33 parallel to the top surface, the connecting sections are respectively provided with mounting holes 34, the central distance between the mounting hole on the left connecting section and the mounting hole on the right connecting section corresponds to the opening width of a semicircular round steel bolt, and the thread sections at the two ends of the semicircular round steel bolt of the semicircular bolt embedded part extend into the left and right mounting holes of the 'n' -shaped clamp part and are connected through nuts 5 in the mounting state.
the semicircular plastic pipe 9 is a semicircular PVC plastic pipe.
the construction method for fixing the overhanging I-shaped steel by using the semicircular bolt clamping ring component comprises the following steps:
s1, construction preparation
S11, installing the template according to the special construction scheme of the template, erecting a template supporting system strictly according to the standard requirement, and entering the next procedure after the template supporting system is qualified;
s12, determining the specification of the cantilever I-shaped steel according to the approved construction scheme special for the cantilever scaffold, and designing the specification and the size of the semicircular bolt clamping ring assembly according to the specification of the cantilever I-shaped steel;
S13, determining the placement position of the I-steel and the pre-embedded position of the semicircular bolt clamping ring assembly according to the requirements of the special project of the cantilever scaffold on a floor template needing to be provided with the cantilever I-steel, and obviously marking the template;
s2, manufacturing a semicircular bolt clamping ring component
s21, taking a section of round steel material and a section of flat steel material respectively, and enabling the lengths of the sections to accord with the specification and the size of the semicircular bolt clamping ring component designed in the step S12;
s22, cutting threads at two ends of the round steel material by using a thread cutting machine to obtain cut-thread round steel 1, wherein the diameter of the cut threads is slightly smaller than that of the round steel, and the diameter of the threads is consistent with the specification of a matched nut 5;
s23, bending the slotted round steel 1 into a semicircular round steel bolt 2 by using a steel bar bending machine, wherein the diameter of the semicircular section of the semicircular round steel bolt conforms to the specification and the size of the semicircular bolt clamping ring component designed in the step S12;
s24, bending the flat steel into a reversed V-shaped clamping piece 3 by using a steel bar bending machine, wherein the tail ends of two vertical surfaces 32 of the reversed V-shaped clamping piece form a left connecting section 33 and a right connecting section 33 which extend outwards and are parallel to the top surface 31 of the reversed V-shaped clamping piece;
s25, mounting holes 34 are respectively formed in the left connecting section and the right connecting section, the distance between the mounting hole in the left connecting section and the mounting hole in the right connecting section is determined according to the opening width of the semicircular round steel bolt, and the size of the mounting hole is slightly larger than the diameter of the round steel in the thread section;
s3, installing semicircular bolt embedded part
s31, coating a release agent 8 on the whole section of the semicircular round steel bolt, screwing the semicircular round steel bolt into a semicircular plastic pipe 9 to enable the thread sections 21 at two ends to be exposed out of the outer end of the semicircular plastic pipe hole 9, and screwing a nut 5 on the thread sections 21;
s32, installing the semi-circular bolt embedded part manufactured in the step S31 according to the embedded position of the semi-circular bolt clamping ring component determined in the step S13, and fixing the position of the semi-circular bolt embedded part by using iron nails and binding wires;
s33, winding, binding and sealing the exposed thread section 21 of the semicircular round steel bolt and the position where the semicircular round steel bolt is connected with the semicircular plastic pipe 9 by using a transparent adhesive tape 4 to prevent concrete from polluting the thread and prevent cement mortar from flowing into the semicircular plastic pipe;
s34, arranging two reinforcing ribs 10 at two slightly deviated sides of the middle of the semicircle of the semicircular bolt embedded part, wherein the reinforcing ribs are longitudinally arranged perpendicular to the snap ring assembly and are fixedly connected with floor slab bottom ribs through binding wires;
s4, pouring concrete
s41, checking whether the position of the semicircular bolt embedded part is correct or not and whether the connection is stable or not;
S42, pouring floor concrete, wherein overtime vibration cannot be carried out when the floor concrete is poured to the position of the semicircular bolt embedded part;
s43, after pouring is finished, manual adjustment is timely carried out, and the semicircular bolt embedded part is perpendicular to a floor slab;
s5, mounting overhanging I-shaped steel
s51, removing the transparent adhesive tape 4 wound and bound on the semicircular bolt embedded part and screwing out the nut 5;
S52, hoisting the I-shaped steel to enable the I-shaped steel to fall between two thread sections of the semicircular bolt embedded part;
S53, installing the inverted-V-shaped tightening hoop member 3 to be buckled on the I-shaped steel, respectively sleeving a thread section of the semicircular round steel bolt into the installation holes on the left side and the right side of the inverted-V-shaped tightening hoop member, adding an elastic sheet 7 and a gasket 6 on the thread section, and screwing a nut 5;
s54, adjusting the position of the I-shaped steel, screwing the nut, and finally fastening and fixing the I-shaped steel and the gap between the two vertical surfaces of the inverted V-shaped fastening hoop by using a wood wedge 16;
S6, dismantling the overhanging I-shaped steel and recycling the semicircular bolt
When the overhanging I-steel is to be dismantled after finishing the decoration stage of the building, the steps are as follows:
S61, removing the nut, the gasket and the elastic sheet, and then removing the reversed V-shaped tightening piece;
s62, hoisting and detaching the cantilever I-shaped steel;
s63, screwing out a semicircular round steel bolt from the middle side of the semicircular plastic pipe, and recycling for later use;
and S64, filling cement mortar into the semicircular plastic pipe hole, and plastering and pressing the surface of the hole.
And S32, when the semicircular bolt embedded parts are installed, the semicircular bolt embedded parts are ensured to be perpendicular to the template, and meanwhile the thickness of a protective layer with the distance of 10mm from the lower surface of the semicircular plastic pipe to the template is ensured, so that water leakage at the positions of the floor slab embedded semicircular plastic pipes is effectively prevented.
Claims (2)
1. A semicircular bolt snap ring assembly is characterized in that: the semi-circular bolt embedded part comprises a semi-circular bolt embedded part and a clamping part (3) shaped like a Chinese character 'ji', wherein the semi-circular bolt embedded part comprises a semi-circular round steel bolt (2) and a semi-circular plastic pipe (9), the semi-circular round steel bolt is of an open semi-circular structure made of round steel, the middle of the open semi-circular round steel is a semi-circular section (22), the two ends of the open semi-circular round steel are provided with thread sections (21), the diameter of threads of the thread sections is slightly smaller than that of the round steel, and the opening width of the semi-circular round steel bolt, namely the diameter of the semi-circular section is larger than the;
the semicircular diameter of the semicircular plastic pipe (9) corresponds to the diameter of the semicircular section of the semicircular round steel bolt (2), the aperture of the semicircular plastic pipe is slightly larger than the diameter of the semicircular bolt round steel, the semicircular round steel bolt is sleeved in the semicircular plastic pipe in an installation state, and the thread sections at the two ends of the semicircular round steel bolt are exposed out of the outer end of the semicircular plastic pipe;
the 'n' -shaped clamping piece (3) is of an open 'n' -shaped structure made of flat steel, the top surface (31) of the 'n' -shaped clamping piece is perpendicular to two vertical surfaces (32), the width and the height of the 'n' -shaped opening are both larger than the width and the height of an outrigger I-shaped steel (14) to be fixed, the tail ends of the two vertical surfaces of the 'n' -shaped clamping piece are provided with extended connecting sections (33) parallel to the top surface, the connecting sections are respectively provided with mounting holes (34), the central distance between the mounting hole on the left connecting section and the mounting hole on the right connecting section corresponds to the opening width of the semicircular round steel bolt, and the thread sections at the two ends of the semicircular round steel bolt of the semicircular bolt embedded piece extend into the left and right mounting holes of the 'n' -shaped clamping piece and are connected through nuts (5) in the mounting state.
2. a half-round bolt snap ring assembly as claimed in claim 1, wherein: the semicircular plastic pipe (9) is a semicircular PVC plastic pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244098.1U CN209799022U (en) | 2018-12-29 | 2018-12-29 | semicircular bolt clamping ring component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822244098.1U CN209799022U (en) | 2018-12-29 | 2018-12-29 | semicircular bolt clamping ring component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209799022U true CN209799022U (en) | 2019-12-17 |
Family
ID=68819085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822244098.1U Expired - Fee Related CN209799022U (en) | 2018-12-29 | 2018-12-29 | semicircular bolt clamping ring component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209799022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763571A (en) * | 2018-12-29 | 2019-05-17 | 广西建工集团第五建筑工程有限责任公司 | It is a kind of semicircle bolt snap ring assemblies and with its fix overhanging I-steel construction method |
| CN111519770A (en) * | 2020-05-06 | 2020-08-11 | 中铁建设集团有限公司 | Improved construction method for manufacturing and positioning U-shaped ring of discharging platform |
-
2018
- 2018-12-29 CN CN201822244098.1U patent/CN209799022U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763571A (en) * | 2018-12-29 | 2019-05-17 | 广西建工集团第五建筑工程有限责任公司 | It is a kind of semicircle bolt snap ring assemblies and with its fix overhanging I-steel construction method |
| CN111519770A (en) * | 2020-05-06 | 2020-08-11 | 中铁建设集团有限公司 | Improved construction method for manufacturing and positioning U-shaped ring of discharging platform |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 |