CN113323300A - Beam type stair convenient to demould and manufacturing method thereof - Google Patents
Beam type stair convenient to demould and manufacturing method thereof Download PDFInfo
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- CN113323300A CN113323300A CN202110490083.7A CN202110490083A CN113323300A CN 113323300 A CN113323300 A CN 113323300A CN 202110490083 A CN202110490083 A CN 202110490083A CN 113323300 A CN113323300 A CN 113323300A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 44
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 239000004567 concrete Substances 0.000 claims description 20
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 4
- 206010016807 Fluid retention Diseases 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
- E04F11/025—Stairways having stringers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/04—Producing shaped prefabricated articles from the material by tamping or ramming
- B28B1/045—Producing shaped prefabricated articles from the material by tamping or ramming combined with vibrating or jolting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/065—Removing the shaped articles from moulds by applying electric current or other means of discharging, e.g. pneumatic or hydraulic discharging means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
- E04F11/02—Stairways; Layouts thereof
- E04F11/022—Stairways; Layouts thereof characterised by the supporting structure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention discloses a beam type stair convenient for demoulding, which comprises steps, an oblique beam, a platform beam and a platform plate, wherein the steps are supported on the oblique beam, the oblique beam and the platform plate are supported on the platform beam, and the platform beam is supported on a bearing wall; the steps positioned at the two ends are provided with pin key reserved openings and reinforcing rib reserved openings, pin keys are arranged in the pin key reserved openings, reinforcing ribs are arranged in the reinforcing rib reserved openings, and the reinforcing ribs are arranged along the back of the steps and are matched with the shapes of the steps; and an installation hoisting point position and a transportation hoisting point position are also arranged along the edge of the step. This beam type stair structure is ingenious, and the drawing of patterns is convenient, can effectively improve the preparation efficiency, reduces operating personnel's intensity of labour, reduces the cost of manufacture simultaneously. The method for manufacturing the beam type stair convenient to demold is used for manufacturing the beam type stair convenient to demold, and also has the advantages of convenience in demolding, capability of effectively improving manufacturing efficiency and reducing labor intensity of operators.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a beam type stair convenient for demoulding and a manufacturing method thereof.
Background
The stair is not only an important component of building engineering, but also a green channel for saving lives when an earthquake occurs, and the damage and the blockage of the stair can cause serious influence on earthquake rescue and personnel evacuation, so that casualties are caused, and property loss is increased. In order to enhance the safety performance of the building structure and promote the development pace of the industrialized and modernized building industry, the assembled building structure is gradually popularized by starting with an assembled stair with low cost difference and technical difficulty according to the principle of simplicity to complexity and easiness to difficulty so as to promote the improvement of the technological level of the assembled domestic engineering construction.
The basic types of fabricated staircases are: the large and medium assembled stairway and the small component assembled stairway; large and medium assembled stair: in the building engineering, the large and medium assembled staircases can greatly reduce the number of components, a large hoisting tool is needed in the installation process, the construction speed is improved, and the labor intensity is reduced. The floor section plates and the platforms are processed together to form an integral component which is a large component assembly type stair, a hollow component can be used, and a solid component can also be used. The middle-sized component fabricated stairway is generally manufactured separately into a rest platform and a bench and then installed. The platform beam is arranged separately or the platform beam and the platform plate are combined into a component, and the platform is generally a channel plate. Small component fabricated stairway: the small-sized component assembly type stair has the advantages of small component size, light weight, easiness in manufacturing and the like, and has the defects of low construction speed, more wet operation and suitability for areas with poor construction conditions.
According to the structural form and the stress point, the fabricated concrete stair is mainly divided into a plate stair and a beam stair. Generally, when the horizontal projection span of the stair section is less than or equal to 3m, a plate stair is preferably adopted; when the distance exceeds 3m, the plate type stairs are not economical, and the beam type stairs are preferably adopted. The plate type stairs are: the combined type terrace comprises a terrace plate, a platform beam and a terrace plate, and has the advantages of smooth lower surface, convenient construction formwork support and light appearance; the thickness of the bench plate is 1/25-1/30 of the span. Beam type stairs: the cast-in-place stair railing is composed of steps, an oblique beam, a platform plate and a platform beam, wherein the oblique beam can be arranged below the steps or above the steps, and a cast-in-place stair railing plate can be used for replacing the oblique beam to form the railing plate beam type stair. According to the width of the stair sections, the stair sections of the beam type stairs can adopt a double-beam type or a single-beam type.
The existing beam type stair is difficult to demold in the manufacturing process, and a stair lower beam cannot be smoothly separated from a mold, so that the manufacturing is time-consuming and long, the manufacturing efficiency is influenced, and the popularization and the application of the beam type stair in the technical field of building engineering are not facilitated.
Disclosure of Invention
In order to overcome the defects in the prior art, the first invention aims to provide the beam type stair convenient for demolding, the beam type stair is ingenious in structure and convenient to demold, the manufacturing efficiency can be effectively improved, the labor intensity of operators is reduced, the manufacturing cost is reduced, and the beam type stair is beneficial to popularization and application in the technical field of building engineering. The second invention aims to provide a manufacturing method of the beam type stair convenient for demoulding, the manufacturing method is used for manufacturing the beam type stair convenient for demoulding, and the beam type stair also has the advantages of convenience in demoulding, capability of effectively improving manufacturing efficiency and reducing labor intensity of operators.
The beam type stair convenient to demold and the manufacturing method of the beam type stair convenient to demold are technically related to each other and belong to the same invention concept.
In order to realize the first object, the invention adopts the following technical scheme that the beam type stair convenient for demoulding comprises steps, an inclined beam, a platform beam and a platform plate, wherein the steps are supported on the inclined beam, the inclined beam and the platform plate are supported on the platform beam, and the platform beam is supported on a bearing wall; the steps positioned at the two ends are provided with pin key reserved openings and reinforcing rib reserved openings which are communicated with the back of the steps, pin keys are arranged in the pin key reserved openings, reinforcing ribs are arranged in the reinforcing rib reserved openings, and the reinforcing ribs are arranged along the back of the steps and are matched with the shape of the steps; four installation hanging point positions and a plurality of transportation hanging point positions are further arranged along the edge of the step, the four installation hanging point positions are distributed at four corners of the whole beam type stair, and the transportation hanging point positions are arranged at equal intervals along the edge of the step; and annular bolts are embedded in the installation lifting point positions, and the lifting appliance realizes the horizontal lifting demoulding of the beam type stairs by lifting and pulling the annular bolts.
As a preferable aspect of the present invention, the positions of the resultant force of the suspension points of the four installation suspension point positions coincide with the center of gravity of the step.
As a preferable scheme of the invention, the installation hoisting point is a bolt hole with threads, and the opening is arranged in a flaring manner.
As the preferable scheme of the invention, the two ends of each step are provided with transportation lifting point positions, and the transportation lifting point positions are arranged close to the central line position of the step.
As a preferable scheme of the invention, a plurality of pin keys are arranged in each step.
As a preferable scheme of the invention, the number of the pin keys is three, and the distance between every two pin keys is arranged at equal intervals.
As the preferable scheme of the invention, the tread surface close to the tread side surface is provided with the anti-skid belts, and the two anti-skid belts are arranged in parallel.
As a preferable scheme of the invention, the anti-skid belt is arranged in a concave manner.
As the preferable scheme of the invention, the pin key reserved port and the reinforcing rib reserved port are matched and arranged and are arranged on the steps at two ends.
Compared with the prior art, the invention has the following advantages: according to the beam type stair convenient to demold, the installation hanging point position and the transportation hanging point position are preset, so that the demolding efficiency can be effectively improved, the manufacturing efficiency of the stair is further improved, the labor intensity of operators is reduced, the manufacturing cost is reduced, and the beam type stair is beneficial to popularization and application in the technical field of building engineering.
In order to realize the second invention purpose, the invention adopts the following technical scheme that the manufacturing method of the beam type stair convenient for demoulding is used for manufacturing the beam type stair convenient for demoulding, and comprises the following steps: s1, selecting a flat vertical die; s2, bending the steel bar; s3, eliminating rust, water rust and oil stains at the welding part before welding the steel bar, and straightening or cutting off a twisted part at the end part of the steel bar; s4, setting varieties, specifications, quantities and positions of the reinforcing steel bars, accessories and embedded parts in the reinforcing steel bar finished product as required; s5, the steel bar framework is lightly placed into a horizontal and vertical mold, the steel bar framework cannot be moved after being placed into the horizontal and vertical mold, the steel bar is straight and free of damage when being placed into the mold, and oil stains, particles or flaky old rust cannot be formed on the surface of the steel bar framework; s6, manufacturing the steel bars into a steel bar mesh; s6, manufacturing concrete, detecting the slump, the cohesiveness and the water retention of the concrete, and reserving pin keys and reinforcing ribs; s7, manufacturing steps to form a bench board, and after the bench board is cast and molded, performing surface pressing treatment again before initial setting; and S8, when the strength of the concrete reaches 20MPa, the bench boards are horizontally hung and demoulded through the annular bolts in the four-point installation hoisting points.
Compared with the prior art, the invention has the following advantages: the manufacturing method of the beam type stair convenient to demold has the advantages of being convenient to demold, capable of effectively improving manufacturing efficiency and reducing labor intensity of operators.
Drawings
FIG. 1 is a top view of a beam stair for facilitating demolding in the embodiment;
FIG. 2 is a side view of the structure of a girder type staircase for facilitating demolding in the embodiment;
FIG. 3 is a schematic structural view of a step in a beam stair for facilitating demolding in the embodiment;
FIG. 4 is a cross-sectional view of the structure at 1-1 in FIG. 3;
FIG. 5 is a cross-sectional view of the structure at 2-2 in FIG. 3;
FIG. 6 is a schematic structural diagram of a mounting hanging point position in the beam type stair convenient for demolding in the embodiment;
FIG. 7 is a schematic structural diagram of a transportation hanging point position in the beam type stair convenient for demolding in the embodiment;
FIG. 8 is a schematic structural diagram of a transportation hanging point position in the beam type stair convenient for demolding in the embodiment;
FIG. 9 is a partial schematic structural view of a step in a beam stair for facilitating demolding in the embodiment;
FIG. 10 is a partial schematic view of a step in a beam stair for facilitating demolding in the embodiment.
Reference numerals: 1. stepping; 2. an oblique beam; 3. a platform beam; 4. a platform plate; 5. installing a hanging point position; 6. a pin key reserved opening; 7. a reinforcing rib reserved opening; 8. transporting the hoisting point position; 9. a pin key; 10. reinforcing ribs; 11. an anti-slip belt.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
Example (b): as shown in fig. 1 to 10, the girder type staircase convenient for demoulding comprises steps 1, an oblique girder 2, a platform girder 3 and a platform plate 4, wherein the steps 1 are supported on the oblique girder 2, the oblique girder 2 and the platform plate 4 are supported on the platform girder 3, and the platform girder 3 is supported on a bearing wall. A plurality of 1 formation bench boards of marking time, in order to guarantee the structural strength of bench board, guarantee life, the above-mentioned 1 of marking time that is located both ends is seted up and is reserved mouthful 6 and the strengthening rib reservation mouth 7 with 1 back of the body that link up mutually of marking time, install cotter 9 in the mouth 6 is reserved to the above-mentioned cotter, furthermore, in order to guarantee every structural strength who marks time 1, all be equipped with a plurality of cotters 9 in every step above-mentioned 1 of marking time, cotter 9 in this embodiment is three, distance equidistance between two liang of above-mentioned cotter 9 sets up. Further, in order to guarantee the structural strength of the bench board and guarantee the service life of the bench board, a reinforcing rib 10 is arranged in the reinforcing rib reserved opening 7, and the reinforcing rib 10 is arranged along the back of the step 1 and is matched with the step 1 in shape to form a bent shape.
The demoulding difficulty of the existing beam type stair in the manufacturing process, the lower stair beam can not be smoothly separated from a mould, the manufacturing is time-consuming and long, the manufacturing efficiency is influenced, the popularization and the application of the beam type stair in the technical field of building engineering are not facilitated, in order to solve the problems, an installation hoisting point position 5 and a transportation hoisting point position 8 are further arranged at the edge of the step 1 along the step, an annular bolt is arranged in the installation hoisting point position 5, a lifting appliance adjusts the hoisting position of the stair through a hand hoist by lifting the annular bolt, and the flat-hanging demoulding of the beam type stair is realized.
In order to realize the installation at different angles, ensure the accuracy of the installation angle and reduce the operation difficulty, the installation hoisting points 5 are arranged in a plurality of numbers, the installation hoisting points 5 in the embodiment are four, the four installation hoisting points 5 are arranged along the integral corners of the beam type stair, and during the hoisting, the resultant force positions of the hoisting points of the four installation hoisting points 5 coincide with the gravity center of the step 1, so as to ensure the stability of the stair section plate in the hoisting process.
In order to facilitate the transportation of the stair section plates, the two ends of each step of the step 1 are respectively provided with a transportation lifting point position 8, the transportation lifting point positions 8 are arranged close to the central line position of the step 1, the transportation lifting at different positions can be realized, and the probability of damage of the stair in the lifting process is reduced.
In order to facilitate the use, be equipped with anti-skidding area 11 on 1 surface of above-mentioned marking time, above-mentioned anti-skidding area 11 is the indent setting, and anti-skidding area 11 sets up to two, and parallel arrangement each other between two anti-skidding areas 11, and anti-skidding area 11 is close to the border setting of marking time 1, plays the effect that anti-skidding and anti-falling.
In the embodiment, the beam type stair convenient for demolding can effectively improve demolding efficiency by presetting the installation hoisting point position and the transportation hoisting point position, so that the manufacturing efficiency of the stair is improved, the labor intensity of operators is reduced, the manufacturing cost is reduced, and the popularization and the application of the beam type stair in the technical field of building engineering are facilitated.
A method for manufacturing a beam stair convenient for demoulding is used for manufacturing the beam stair convenient for demoulding, and comprises the following steps:
s1, prefabricating the reinforced concrete beam type stair sections, and adopting a flat vertical mold to facilitate demolding operation;
s2, bending the steel bar, wherein the hook and the bending of the steel bar are in accordance with the relevant regulations in the acceptance criteria of the construction quality of the concrete structure engineering;
s3, eliminating rust, water rust, oil stain and the like at the welding part before welding the steel bar, straightening or cutting off the twisted part at the end part of the steel bar, and flattening the surface of the welding line after welding without the defects of burning, cracking and the like;
s4, enabling the varieties, specifications, quantities and positions of the reinforcing steel bars, accessories and embedded parts in the finished reinforcing steel bar products to meet relevant standard specifications;
s5, the steel bar framework is lightly placed into a horizontal and vertical mold, the steel bar framework cannot be moved after being placed into the horizontal and vertical mold, the steel bar is straight and free of damage when being placed into the mold, and oil stains, particles or flaky old rust cannot be formed on the surface of the steel bar framework;
s6, manufacturing the steel bars into a steel bar mesh;
s6, preparing concrete, wherein the concrete is required to be uniformly stirred, consistent in color and good in workability, the slump of the concrete is required to be detected at a stirring or pouring place, the cohesiveness and the water retention of the concrete are visually checked disc by disc, and the pin keys 9 and the reinforcing ribs 10 are reserved; the total time of concrete transportation, pouring and intermittence is not more than the initial setting time of the concrete; concrete should be poured and formed continuously, a proper vibration mode is selected according to production conditions, the vibration time is that the concrete surface stops sinking or the sinking is not obvious, bubbles on the concrete surface are not generated obviously, the concrete fills the corner part of the mould with mortar bubbles on the surface, the concrete fills the corner part of the mould with mortar and the mortar is discharged, and leakage vibration or over vibration is avoided;
s7, manufacturing the step 1 to form a bench board, and after the bench board is cast and molded, performing surface pressing treatment again before initial setting;
and S8, when the concrete strength reaches 20MPa, the bench boards are horizontally hung and demoulded through the annular bolts in the four-point installation hoisting point 5.
The manufacturing method of the beam type stair convenient to demold in the embodiment also has the advantages of being convenient to demold, capable of effectively improving manufacturing efficiency and reducing labor intensity of operators.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: 1. stepping; 2. an oblique beam; 3. a platform beam; 4. a platform plate; 5. installing a hanging point position; 6. a pin key reserved opening; 7. a reinforcing rib reserved opening; 8. transporting the hoisting point position; 9. a pin key; 10. reinforcing ribs; 11. non-slip bands, etc., but do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to the spirit of the present invention.
Claims (10)
1. A beam type stair convenient for demolding comprises steps (1), an oblique beam (2), a platform beam (3) and a platform plate (4), wherein the steps (1) are supported on the oblique beam (2), the oblique beam (2) and the platform plate (4) are supported on the platform beam (3), and the platform beam (3) is supported on a bearing wall; the method is characterized in that: the mark steps (1) positioned at two ends are provided with pin key reserved openings (6) and reinforcing rib reserved openings (7) communicated with the back parts of the mark steps (1), pin keys (9) are installed in the pin key reserved openings (6), reinforcing ribs (10) are arranged in the reinforcing rib reserved openings (7), and the reinforcing ribs (10) are arranged along the back parts of the mark steps (1) and are matched with the shape of the mark steps (1); four installation hoisting point positions (5) and a plurality of transportation hoisting point positions (8) are further arranged along the edge of the step (1), the four installation hoisting point positions (5) are distributed at four corners of the whole beam type stair, and the plurality of transportation hoisting point positions (8) are arranged at equal intervals along the edge of the step (1); an annular bolt is embedded in the installation hanging point position (5), and the horizontal hanging demoulding of the beam type stair is realized by the hanging ring bolt of the hanger.
2. The easy-to-demold beam stair of claim 1, wherein: the positions of the resultant force of the lifting points of the four mounting lifting point positions (5) are superposed with the gravity center of the step (1).
3. The easy-to-demold beam stair of claim 2, wherein: the installation hoisting point (5) is a bolt hole with threads, and the opening is arranged in an outward expansion mode.
4. The easy-to-demold beam stair of claim 1, wherein: and two ends of each step (1) are respectively provided with a transportation lifting point location (8), and the transportation lifting point locations (8) are arranged close to the central line position of the step (1).
5. The easy-to-demold beam stair of claim 1, wherein: a plurality of pin keys (9) are arranged in each step (1).
6. The easy-to-demold beam stair of claim 5, wherein: the number of the pin keys (9) is three, and the distance between every two pin keys (9) is arranged at equal intervals.
7. A beam stair facilitating demoulding according to claim 1 or 6, wherein: the surface of the step (1) close to the side surface of the step (1) is provided with anti-skid belts (11), and the two anti-skid belts (11) are arranged in parallel.
8. The easy-to-demold beam stair of claim 7, wherein: the anti-skid belt (11) is arranged in an inwards concave manner.
9. The easy-to-demold beam stair of claim 1, wherein: the pin key reserved port (6) and the reinforcing rib reserved port (7) are matched and arranged and are arranged on the steps (1) at two ends.
10. A method for manufacturing a demoulding-convenient beam stair, which is used for manufacturing the demoulding-convenient beam stair as claimed in any one of claims 1 to 9, and is characterized in that: the method comprises the following steps: s1, selecting a flat vertical die; s2, bending the steel bar; s3, eliminating rust, water rust and oil stains at the welding part before welding the steel bar, and straightening or cutting off a twisted part at the end part of the steel bar; s4, setting varieties, specifications, quantities and positions of the reinforcing steel bars, accessories and embedded parts in the reinforcing steel bar finished product as required; s5, the steel bar framework is lightly placed into a horizontal and vertical mold, the steel bar framework cannot be moved after being placed into the horizontal and vertical mold, the steel bar is straight and free of damage when being placed into the mold, and oil stains, particles or flaky old rust cannot be formed on the surface of the steel bar framework; s6, manufacturing the steel bars into a steel bar mesh; s6, manufacturing concrete, detecting the slump, the cohesiveness and the water retention of the concrete, and reserving the pin keys (9) and the reinforcing ribs (10); s7, manufacturing the step (1) to form a bench board, and after the bench board is cast and molded, performing surface pressing treatment again before initial setting; and S8, when the concrete strength reaches 20MPa, the bench boards are horizontally hung and demoulded through the annular bolts in the four-point installation hanging point positions (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110490083.7A CN113323300A (en) | 2021-05-06 | 2021-05-06 | Beam type stair convenient to demould and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110490083.7A CN113323300A (en) | 2021-05-06 | 2021-05-06 | Beam type stair convenient to demould and manufacturing method thereof |
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| CN113323300A true CN113323300A (en) | 2021-08-31 |
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| CN202110490083.7A Pending CN113323300A (en) | 2021-05-06 | 2021-05-06 | Beam type stair convenient to demould and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113146800A (en) * | 2021-04-22 | 2021-07-23 | 邓申付 | Pouring forming method for high-strength reinforced concrete prefabricated staircase |
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