CN217630940U - Variable cross section minor diameter circle stair structure marks time - Google Patents
Variable cross section minor diameter circle stair structure marks time Download PDFInfo
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- CN217630940U CN217630940U CN202221627935.9U CN202221627935U CN217630940U CN 217630940 U CN217630940 U CN 217630940U CN 202221627935 U CN202221627935 U CN 202221627935U CN 217630940 U CN217630940 U CN 217630940U
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Abstract
The utility model relates to a variable cross section minor diameter circle stair structure marks time, including the bench of marking time of centre of a circle vertical location steel pipe, inward flange vertical location steel pipe, outward flange line vertical location steel pipe, horizontally connect steel pipe and fan-shaped structure, a centre of a circle vertical location steel pipe, an inward flange vertical location steel pipe and an outward flange line vertical location steel pipe pass through horizontally connect steel pipe fixed connection, and two adjacent horizontally connect steel pipe top departments are equipped with the bench of marking time. The variable cross-section minor diameter circle stair structure of marking time has the installation of convenient vertical location, directly forms the curved surface bottom plate and supports, and lofting combines with the support, avoids advantages such as dislocation that accumulative error produced.
Description
Technical Field
The utility model relates to a circle stair technical field, especially a variable cross section minor diameter circle stair structure mark time.
Background
At present, compared with a common concrete circular stair, the circular stair with variable stepping cross sections and smaller diameter is mainly characterized in that the elevation of the bottom of a stepping plate is not on the same plane, only the accuracy of the plane position of the stair can be ensured under the existing lofting technology, the height accuracy of the bottom plate of the stair on the space is difficult to ensure, errors are inevitable during artificial lofting due to the fact that the elevation needs to be continuously determined (the elevation is hung by a plumb bob, hereinafter, the elevation is called as a hanging elevation for short), if each step is repeatedly hung, the errors are continuously accumulated, and finally, repeated measurement is possibly needed, so that the time and labor cost are increased. Repeated lofting is required to be carried out when the next layer of small-diameter variable cross section round stair unwrapping wire, and the skew appears in upper and lower floor stair location in case error accumulation can lead to, influences actual construction.
Therefore, a step variable-section small-diameter round stair structure is developed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming prior art not enough and providing a variable cross section minor diameter circle stair structure of marking time, have convenient vertical location installation, directly form the curved surface bottom plate and support, lofting combines with the support, avoids the dislocation of accumulative error production, etc. advantage.
In order to achieve the purpose, the utility model adopts the technical proposal that: the utility model provides a variable cross section minor diameter circle stair structure marks time, includes centre of a circle vertical location steel pipe, inward flange vertical location steel pipe, outward flange line vertical location steel pipe, horizontally connect steel pipe and the ladder section of marking time of fan-shaped structure, the circumferencial direction of centre of a circle vertical location steel pipe is equipped with the round from inside to outside in proper order inward flange vertical location steel pipe and round outward flange line vertical location steel pipe, centre of a circle vertical location steel pipe, one inward flange vertical location steel pipe and one outward flange line vertical location steel pipe passes through horizontally connect steel pipe fixed connection, horizontally connect steel pipe sets gradually from bottom to top on the circumference of centre of a circle vertical location steel pipe, adjacent two horizontally connect steel pipe top department sets up the ladder section of marking time, adjacent two inward flange vertical location steel pipe and adjacent two set up between the outward flange line vertical location steel pipe the ladder section of marking time, ladder section both ends punishment of marking time do not is equipped with an outer curved surface and an inner curved surface.
Preferably, the shortest distance between the outer edge line vertical positioning steel pipe and the outer curved surface is L, and L is more than or equal to 0.5cm and less than or equal to 1.5cm.
Preferably, the tread bench comprises a first tread, a rest platform and a twenty-fourth tread which are arranged in the clockwise direction.
Preferably, the included angle of the first-stage step is alpha, and the alpha is more than or equal to 10 degrees and less than or equal to 15 degrees.
Preferably, the included angle of the rest platform is beta, and the beta is more than or equal to 40 degrees and less than or equal to 45 degrees.
Preferably, an included angle between the first-stage step and the twenty-fourth-stage step is theta, and the theta is greater than or equal to 0 degree and less than or equal to 90 degrees.
Preferably, the first step, the rest platform and the twenty-fourth step are all wedge-shaped structures.
Preferably, the outer diameter of the inner edge vertical positioning steel pipe is the same as that of the outer edge line vertical positioning steel pipe.
Preferably, the included angle of the sector structure of the twenty-fourth step is equal to alpha.
Preferably, the angle α =10 °.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
1. stair marking and platform plane position location are carried out through vertical location steel pipe, make things convenient for workman's formwork support system location installation.
2. The height of the original space is directly reflected on the circle center vertical positioning steel pipe, the inner side and the outer side of the stair bottom plate are highly positioned on the vertical positioning steel pipe through height positioning, and the stair bottom plate is connected through the horizontal steel pipe to directly form the support of the curved bottom plate.
3. Combine together lofting and support, the partial template support frame that forms round stair in the lofting sets up, can connect long through with vertical positioning steel pipe in addition, directly forms the lofting point position of next floor round stair, and operations such as repeated upper strata location bench elevation have simplified the lofting flow, the workman's of being convenient for operation.
4. Compared with the traditional method, the method can effectively reduce the accumulation of errors in the elevation process without continuous hoisting, and also avoids the problem of dislocation caused by error accumulation due to manual multi-paying-off of the round stairs on the upper and lower layers.
Drawings
Figure 1 is a plan view of the small-diameter stair with the variable cross-section tread of the utility model.
FIG. 2 is a steel pipe positioning layout of the step variable cross-section small-diameter round stair structure of the utility model.
Fig. 3 is an enlarged view of a portion a of fig. 2 of the present invention.
Figure 4 is the bench lofting profile of the variable cross-section minor diameter circle stair structure of marking time.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the attached drawings 1 to 4, a stepping variable-section small-diameter circular stair structure comprises a circle center vertical positioning steel pipe 1, an inner edge vertical positioning steel pipe 2, an outer edge line vertical positioning steel pipe 3, a horizontal connecting steel pipe 4 and a stepping ladder section 5 of a fan-shaped structure, wherein the circle center vertical positioning steel pipe 1, the inner edge vertical positioning steel pipe 2 and the outer edge line vertical positioning steel pipe 3 are fixedly connected through the horizontal connecting steel pipe 4.
Firstly, the projection position of the circular stair on the horizontal plane is positioned through paying off, and the circle center position, the positions of the inner side edge line and the outer side edge line of the stair section, the position of the rest platform and the positions of all steps are found. Arrange centre of a circle vertical location steel pipe 1 in centre of a circle position, with the rest platform initial point, the inside and outside edge of each mark time point sets up inward flange vertical location steel pipe 2, outward flange line vertical location steel pipe 3, determines circle stair platform section and steps on the section position, and 1cm side form interval will be reserved to this department location steel pipe position. The heights of the points are then set out on the positioning steel pipe.
Because the thickness of the bottom plate of the same step ladder section 5 is changed from the inner side to the outer side, the elevation of the bottom plate of the same step ladder section is not on the same plane but has an inclination angle, and because the height of the bottom plate of different step ladder sections 5 is changed, the whole ladder section bottom plate is actually a curved surface which is bent towards the outer side and the upper part, the height difference of the bottom plate at the inner side and the outer side is simply calculated from the section of the ladder section is infeasible, and the ladder sections at the inner side and the outer side are unfolded to calculate the height of the bottom plate. When the heights of the inner and outer side edge bottom plates are calculated, the corresponding height of the circle center can be further calculated according to the similar triangle, and the bottom plate platform line and each step line of the small-diameter step variable-section circular stair can be accurately laid out by connecting the corresponding circle center height of the step, the height of the inner side bottom plate and the height of the outer edge bottom plate through the horizontal connecting steel pipe 4. Meanwhile, the horizontal connecting steel pipe 4 can be used as a template support.
The circumference direction of centre of a circle vertical location steel pipe 1 is equipped with a round inward flange vertical location steel pipe 2 and a round outward flange line vertical location steel pipe 3 from inside to outside in proper order, lengthens centre of a circle vertical location steel pipe 1, directly forms the laying-out point position of upper round stair. The external diameter of the internal edge vertical positioning steel pipe 2 is the same as that of the external edge line vertical positioning steel pipe 3, and the installation is convenient.
The horizontally connected steel pipes 4 are sequentially arranged on the circumference of the circle center vertical positioning steel pipe 1 from bottom to top, the tops of two adjacent horizontally connected steel pipes 4 are provided with step ladders 5, the positions between two adjacent inner edge vertical positioning steel pipes 2 and two adjacent outer edge line vertical positioning steel pipes 3 are provided with the step ladders 5, and two ends of each step ladder 5 are respectively provided with an outer curved surface 510 and an inner curved surface 511.
The shortest distance between the outer edge line vertical positioning steel pipe 3 and the outer curved surface 510 is L, L is more than or equal to 0.5cm and less than or equal to 1.5cm, and the distance L is preferably 1cm, 0.5cm or 1.5cm.
The tread bench 5 comprises a first step 51, a rest platform 52 and a twenty-fourth step 53 which are arranged in the clockwise direction. The first stage step 51, the rest platform 52 and the twenty-fourth stage step 53 are all wedge-shaped structures. The rest platform 52 is a fourteenth step, 13 steps are arranged in front of the rest platform 52, 10 steps are arranged behind the rest platform 52, the circle center vertical positioning steel pipe 1 is lengthened, and a plurality of steps can be installed.
The included angle of the first-stage steps 51 is alpha, the included angle of the fan-shaped structure of the twenty-fourth-stage steps 53 is equal to alpha, the included angle of the rest platform 52 is beta, and the included angle between the first-stage steps 51 and the twenty-fourth-stage steps 53 is theta. Alpha is more than or equal to 10 degrees and less than or equal to 15 degrees, and the included angle alpha is preferably 10 degrees or 15 degrees. Beta is more than or equal to 40 degrees and less than or equal to 45 degrees, and the included angle beta is preferably 40 degrees or 45 degrees. Theta is more than or equal to 0 degree and less than or equal to 90 degrees, and the included angle theta is preferably 90 degrees, 0 degrees, 30 degrees, 45 degrees or 60 degrees. When theta =90 DEG, the round stair is provided with a 2/3 area of a full circle on a plane view. Except for the rest platform 52, the included angles of the rest steps are the same.
Lofting out circular landing initiating line and each step line through each location steel pipe, through with this parameter of height direct lofting to the centre of a circle vertical location steel pipe 1 through alignment on, the height value that need constantly pass through hanging the elevation, directly through the difference in height of marking time of every step directly obtains, has simplified the lofting flow. The steel pipes arranged for lofting are used as bottom plate template support frames of the round stairs while completing the lofting task. The primary template support frame body is erected simultaneously in the task process of initial lofting, so that the lofting process is simplified, and the construction period is shortened.
The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a variable cross section minor diameter circle stair structure marks time which characterized in that: including centre of a circle vertical location steel pipe (1), inward flange vertical location steel pipe (2), outward flange line vertical location steel pipe (3), horizontally connect steel pipe (4) and ladder section of marking time (5) of fan-shaped structure, the circumferencial direction of centre of a circle vertical location steel pipe (1) is equipped with the round from inside to outside in proper order inward flange vertical location steel pipe (2) and round outward flange line vertical location steel pipe (3), centre of a circle vertical location steel pipe (1), one inward flange vertical location steel pipe (2) and one outward flange line vertical location steel pipe (3) pass through horizontally connect steel pipe (4) fixed connection, horizontally connect steel pipe (4) set gradually from bottom to top on the circumference of centre of a circle vertical location steel pipe (1), adjacent two horizontally connect steel pipe (4) top department sets up ladder section of marking time (5), adjacent two inward flange vertical location steel pipe (2) and adjacent two set up between outward flange line vertical location steel pipe (3) ladder section of marking time (5), ladder section of marking time (5) both ends punishment do not is equipped with an outer curved surface (510) and an inner curved surface (511).
2. The stair structure with the stepping variable-section and the small-diameter circular stair structure according to claim 1, wherein the shortest distance between the outer edge line vertical positioning steel pipe (3) and the outer curved surface (510) is L, and L is more than or equal to 0.5cm and less than or equal to 1.5cm.
3. The stair structure of claim 1, wherein the stair tread sections (5) comprise a first step (51), a rest platform (52) and a twenty-fourth step (53) arranged in a clockwise direction.
4. The stair structure with the variable cross-section and the small diameter of the steps as claimed in claim 3, wherein the included angle of the first step (51) is α, and is more than or equal to 10 degrees and less than or equal to 15 degrees.
5. The stair step structure with variable cross-section and small diameter according to claim 3, wherein the angle of the rest platform (52) is β, and β is greater than or equal to 40 ° and less than or equal to 45 °.
6. The stair structure with the variable cross-section and the small diameter of the steps as claimed in claim 3, wherein the included angle between the first step (51) and the twenty-fourth step (53) is theta, and theta is greater than or equal to 0 degrees and less than or equal to 90 degrees.
7. The stair structure with the steps and the variable cross-section and the small diameter according to claim 3, wherein the first step (51), the rest platform (52) and the twenty-fourth step (53) are wedge-shaped structures.
8. The stair structure with the steps and the variable cross sections and the small diameter according to claim 1, wherein the outer diameter of the inner edge line vertical positioning steel pipe (2) is the same as that of the outer edge line vertical positioning steel pipe (3).
9. The stair structure with steps and variable cross sections and small diameter as claimed in claim 4, wherein the included angle of the sector structure of the twenty-fourth step (53) is equal to α.
10. The stair step structure with variable cross-section and small diameter as claimed in claim 4, wherein the included angle α =10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221627935.9U CN217630940U (en) | 2022-06-27 | 2022-06-27 | Variable cross section minor diameter circle stair structure marks time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221627935.9U CN217630940U (en) | 2022-06-27 | 2022-06-27 | Variable cross section minor diameter circle stair structure marks time |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217630940U true CN217630940U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221627935.9U Active CN217630940U (en) | 2022-06-27 | 2022-06-27 | Variable cross section minor diameter circle stair structure marks time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217630940U (en) |
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2022
- 2022-06-27 CN CN202221627935.9U patent/CN217630940U/en active Active
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