CN210597325U - Anti-falling conversion device for steel enclosing purlin - Google Patents
Anti-falling conversion device for steel enclosing purlin Download PDFInfo
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- CN210597325U CN210597325U CN201921150529.6U CN201921150529U CN210597325U CN 210597325 U CN210597325 U CN 210597325U CN 201921150529 U CN201921150529 U CN 201921150529U CN 210597325 U CN210597325 U CN 210597325U
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Abstract
The utility model relates to a steel encloses purlin conversion equipment that prevents falling, including the existing hat roof beam and the existing steel of underground open cut station stake strut support system in enclose the purlin, enclose to set up wire rope between the purlin in existing hat roof beam and existing steel, wire rope upper and lower both ends are all fixed respectively to existing hat roof beam top and existing steel through fixed subassembly and enclose the purlin top, enclose at existing hat roof beam and existing steel and form effective connection between the purlin. The utility model discloses utilize existing supporting measure to enclose the steel and replace the below A-frame of purlin, solved the steel promptly and enclosed the safety problem of falling of purlin self and saved the space that the steel encloses the below A-frame of purlin, solve the difficult problem that job site side wall reinforcing bar overlap joint, ligature and waterproof operation space are not enough.
Description
Technical Field
The utility model relates to an underground traffic engineering construction technical field, concretely relates to steel encloses purlin and prevents conversion equipment that falls.
Background
With social development, pile support supporting systems are widely applied to underground open cut stations at present, but when the traditional subway supporting pile support system is constructed, the limitations of structural safety, economic benefit factors and the like are limited, and the clear distance between a steel support and a floor slab is about 1 m. The traditional pile support system has the following composition form: and the steel supports, the end steel enclosing purlin and the steel enclosing purlin are provided with triangular supports below. The conventional pile support system has problems: the triangular supports at the lower positions of the steel enclosing purlins at the end parts of the steel supports are too small in clear distance from the structural plate, so that the insufficient space for on-site lapping, binding and waterproof operation of the side wall reinforcing steel bars is often caused.
Disclosure of Invention
The utility model aims at providing a steel encloses purlin and prevents conversion equipment that falls has both solved the steel and has enclosed the safe problem of falling of purlin self and has saved the space that the steel tapping encloses the below A-frame of purlin.
The utility model discloses the technical scheme who adopts does:
the utility model provides a steel encloses purlin conversion equipment that prevents falling, includes that underground open cut station stake props existing crown beam and existing steel in the strut system of strutting encloses the purlin, its characterized in that:
and a steel wire rope is arranged between the existing crown beam and the existing steel surrounding purlin, the upper end and the lower end of the steel wire rope are respectively fixed to the top of the existing crown beam and the top of the existing steel surrounding purlin through fixing components, and effective connection is formed between the existing crown beam and the existing steel surrounding purlin.
The top of the existing crown beam is provided with an embedded steel plate, the embedded steel plate is fixed on the existing crown beam through expansion bolts, and lifting lugs are welded on the surface of the embedded steel plate and serve as fixed nodes at the upper end of the steel wire rope.
The top of the existing steel enclosing purlin is welded with a hook shaped like a Chinese character 'ji' as a fixed node at the lower end of the steel wire rope.
The two ends of the steel wire rope are respectively connected by a turn buckle and clamped by a U-shaped chuck, and the turn buckle is respectively and reliably connected with a lifting lug of the existing crown beam and a lifting hook of the existing steel purlin.
The steel wire ropes are arranged at positions every 3 meters along the existing crown beam and vertically correspond to the fixed nodes of the existing crown beam and the existing steel purlin.
The utility model has the advantages of it is following:
at present under traditional stake strut support system construction process, be difficult to solve the open cut in the same direction as being the station, the floor apart from the steel shotcrete net apart from the undersize problem, the utility model discloses utilize existing supporting measure to enclose purlin below A-frame to the steel and replace, solved the steel promptly and enclosed purlin self fall safety problem and save the space that the purlin below A-frame was enclosed in the tapping again, solve the difficult problem that job site side wall reinforcing bar overlap joint, ligature and waterproof operation space are not enough.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a cross-sectional view of an A-node embedment.
FIG. 3 is a top view of an A-node embedment.
Fig. 4 is a cross-sectional view of a B-node embedment.
Fig. 5 is a large view of a U-shaped chuck.
FIG. 6 is a perspective view of a turn buckle.
Fig. 7 is a schematic view of a steel cord prototype.
In the figure, 1-lifting lug; 2-expansion bolts; 3, pre-burying a steel plate; 4-turnbuckle; 5-U-shaped clamping heads; 6-steel wire rope; 7-a hook; 8-existing crown beam; 9-a structural top plate; 10-structural middle plate; 11-structural sidewalls; 12-existing steel purlin.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to a steel encloses purlin conversion equipment that prevents falling, enclose purlin 12 with existing steel including the existing crown beam 8 of underground open cut station stake strut support system, enclose between purlin 12 in existing crown beam 8 and existing steel and set up wire rope 6, wire rope 6 is upper and lower both ends all fixed respectively to existing crown beam 8 top and existing steel enclose purlin 12 top through fixed subassembly, enclose between purlin 12 at existing crown beam 8 and existing steel and form effective connection.
The top of the existing crown beam 8 is provided with an embedded steel plate 3, the embedded steel plate 3 is fixed on the existing crown beam 8 through an expansion bolt 2, and a lifting lug 1 is welded on the surface of the embedded steel plate 3 and serves as a fixed node at the upper end of a steel wire rope 6. The top of the existing steel purlin 12 is welded with a hook 7 in a shape like a Chinese character 'ji' as a fixed node at the lower end of the steel wire rope 6. Two ends of a steel wire rope 6 are respectively connected by a turn buckle 4 and clamped by a U-shaped clamping head 5, and the turn buckle 4 is respectively and reliably connected with a lifting lug 1 of an existing crown beam 8 and a lifting hook 7 of an existing steel surrounding purlin 12.
The steel wire ropes 6 are arranged at positions every 3 meters along the existing crown beam 8 and vertically correspond to the fixed nodes of the existing crown beam 8 and the existing steel purlin 12.
The component parameters are specifically:
the steel wire rope is characterized by comprising Q235B embedded steel plates (300 × 16 mm), expansion bolts (M16 × 140), Q235B lifting lugs (t =16mm, r =50mm, h =150 mm), M27-OO type turn-and-turn bolts, 304 stainless steel wire ropes (16 mm thick 7 × 19), wire rope bayonets (∅ 16U type clamping heads) and Q235B round steel (diameter 20 lifting hooks).
Pre-burying measures: pre-burying Q235B steel plates (300 × 16 mm) above the existing concrete crown beam, and arranging one position every 3 meters; the upper part of the embedded steel plate is reliably connected with the existing concrete crown beam (driven into the concrete crown beam by 100 mm) by using expansion bolts (M16 × 140); double-sided welding is adopted between the Q235B steel plate lifting lugs (t =14mm, r =50mm, h =150 mm) and the steel plates, the height of a welding seam is 8mm, and the distance between the lifting lugs and the steel plates is the same; on the steel purlin at the vertical position corresponding to the embedded steel plate, the height of a welding seam of Q235B round steel (with the diameter of 20 lifting hooks) welded on two sides is 8mm, and one part is arranged every 3 m;
connection measures are as follows: the end parts of the steel wire ropes are clamped by 3 steel wire rope bayonets (∅ 16U-shaped chucks) respectively by using 304 stainless steel wire ropes (16 mm thick 7 x 19) and then are connected with M27-OO-shaped turn buckle bolts, and then the steel wire ropes are reliably connected with the lifting lugs on the crown beam and the lifting hooks on the steel purlins respectively by using M27-OO-shaped turn buckle bolts.
1. Construction working conditions are as follows: after the side wall below the steel support reaches the design strength and the scaffold of the structural slab below the steel support is erected, the device is applied to the structural slab under the construction working condition before concrete pouring.
2. Whether the steel support at the replacement position has pre-stress loss or not is checked before the device is applied, the axial force of the steel support is ensured to be within the design requirement range, and the steel support is ensured to be tightly attached to the steel enclosing purlin.
3. The triangular support is dismantled after a replacement device is constructed, the dismantling length is not more than 6m each time, and the stress state of the steel wire rope is checked repeatedly before dismantling, so that the surrounding purlin is ensured to have supporting points.
The utility model discloses enclose purlin below A-frame to the steel on the basis of utilizing the existing enclosure measure in scene to replace, solved the steel promptly and enclosed the safety problem of falling of purlin self and saved the steel tapping and enclose the space of purlin below A-frame to this satisfies job site side wall reinforcing bar overlap joint, ligature and waterproof operation requirement.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (5)
1. The utility model provides a steel encloses purlin conversion equipment that prevents falling, includes that existing crown beam (8) and existing steel in the system are enclosed to the open cut station stake brace support in the underground enclose purlin (12), its characterized in that:
a steel wire rope (6) is arranged between an existing crown beam (8) and an existing steel surrounding purlin (12), the upper end and the lower end of the steel wire rope (6) are respectively fixed to the top of the existing crown beam (8) and the top of the existing steel surrounding purlin (12) through fixing components, and effective connection is formed between the existing crown beam (8) and the existing steel surrounding purlin (12).
2. The anti-falling conversion device for the steel purlin of claim 1, wherein:
the top of the existing crown beam (8) is provided with an embedded steel plate (3), the embedded steel plate (3) is fixed on the existing crown beam (8) through an expansion bolt (2), and a lifting lug (1) is welded on the surface of the embedded steel plate (3) and serves as a fixed node at the upper end of a steel wire rope (6).
3. The anti-falling conversion device for the steel purlin of claim 2, wherein:
the top of the existing steel purlin (12) is welded with a hook (7) in a shape like a Chinese character 'ji' as a fixed node at the lower end of the steel wire rope (6).
4. The anti-falling conversion device for the steel purlin of claim 3, wherein:
two ends of a steel wire rope (6) are respectively connected by a turn buckle (4) and clamped by a U-shaped clamping head (5), and the turn buckle (4) is respectively and reliably connected with a lifting lug (1) of an existing crown beam (8) and a lifting hook (7) of an existing steel surrounding purlin (12).
5. The anti-falling conversion device for the steel purlin of claim 4, wherein:
the steel wire ropes (6) are arranged at positions every 3 meters along the existing crown beam (8) and vertically correspond to the fixed nodes of the existing crown beam (8) and the existing steel purlin (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921150529.6U CN210597325U (en) | 2019-07-22 | 2019-07-22 | Anti-falling conversion device for steel enclosing purlin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921150529.6U CN210597325U (en) | 2019-07-22 | 2019-07-22 | Anti-falling conversion device for steel enclosing purlin |
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| Publication Number | Publication Date |
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| CN210597325U true CN210597325U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921150529.6U Active CN210597325U (en) | 2019-07-22 | 2019-07-22 | Anti-falling conversion device for steel enclosing purlin |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306563A (en) * | 2019-07-22 | 2019-10-08 | 中铁第一勘察设计院集团有限公司 | Steel purlin fall arrest conversion equipment |
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2019
- 2019-07-22 CN CN201921150529.6U patent/CN210597325U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110306563A (en) * | 2019-07-22 | 2019-10-08 | 中铁第一勘察设计院集团有限公司 | Steel purlin fall arrest conversion equipment |
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