CN212957330U

CN212957330U - Prefabricated staircase

Info

Publication number: CN212957330U
Application number: CN202021536503.8U
Authority: CN
Inventors: 凡旗伟; 赵钧峰; 黄磊; 王钲川; 陆文斌
Original assignee: Jiangsu Lanhai Residential Industry Co ltd
Current assignee: Jiangsu Lanhai Residential Industry Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-04-13
Anticipated expiration: 2030-07-29

Abstract

The utility model relates to a prefabricated staircase, including the stair body, the stair body includes the top step body, the bottom step body, the inclined ladder body and the fixed step body that sets up on the inclined ladder body surface, the top step body, the bottom step body, shaping is pour to inclined ladder body and step body homogeneous body, the step body including the level setting trample the face and with trample the face looks vertically holding surface, the internal pre-buried a plurality of steel bars that hang of step, it is the screw-thread steel to hang the steel bar, hang the steel bar perpendicular to and trample the face, hang a terminal surface and trample a face looks parallel and level of steel bar, hang the steel bar that draws and go deep into the internal one end department of step and seted up the one-level connecting hole, wear to be equipped with the one-level dowel in the one-level connecting hole, the one-level dowel is perpendicular with hanging the steel bar, one-level dowel and hanging steel bar fixed connection, hang. This application has the fastness that improves and hangs the reinforcing bar and be connected with prefabricated stair to improve the effect of the security of prefabricated stair hoist and mount operation.

Description

Prefabricated staircase

Technical Field

The application relates to the field of building prefabricated parts, in particular to a prefabricated staircase.

Background

The stairs are important members for vertical traffic between floors in the building. The stair in the traditional building mostly adopts the cast-in-place concrete stair of job site, need formwork, lay the reinforcing bar when the construction, then pour the concrete, this kind of cast-in-place construction stair's construction form, the construction process is complicated, consumes a large amount of manual works, produces building rubbish easily simultaneously.

Relevant notice number is CN208455983U Chinese utility model patent, and it discloses a prefabricated staircase for building, including the prefabricated staircase body, the prefabricated staircase body includes top step body, bottom step body, inclined ladder body and step body, top step body and bottom step body set up respectively at the top and the bottom of inclined ladder body, and inclined ladder body surface between top step body and the bottom step body goes up evenly distributed and is provided with the step body, and the step body that is close to bottom step body or top step body is gone up the pre-buried vertical built-in fitting that has a set of be used for convenient hoist and mount, and the pre-buried horizontal built-in fitting that has a set of be used for convenient upset, drawing of patterns on the inclined ladder body lateral wall that is close to bottom step body or top step body. The utility model discloses structural arrangement is reasonable, can improve prefabricated staircase's the positioning accuracy degree, makes things convenient for drawing of patterns, upset and the installation of whole stair.

Aiming at the related technologies, the inventor thinks that the prefabricated staircase is hoisted and installed by the longitudinal embedded parts in the installation process, and the longitudinal embedded parts bear the gravity of the prefabricated staircase and are easy to fall off from the prefabricated staircase body.

SUMMERY OF THE UTILITY MODEL

In order to improve the security when lifting by crane prefabricated staircase and carrying out the installation operation, this application provides a prefabricated staircase.

The application provides a prefabricated staircase adopts following technical scheme:

a prefabricated staircase comprises a staircase body, wherein the staircase body comprises a top step body, a bottom step body, an inclined staircase body and a step body fixedly arranged on the surface of the inclined staircase body, one end of the inclined staircase body in the length direction is fixedly connected with the top step body, the other end of the inclined staircase body in the length direction is fixedly connected with the bottom step body, the top step body, the bottom step body, the inclined staircase body and the step body are integrally cast, the step body comprises a treading surface and a supporting surface, the supporting surface is horizontally arranged, the supporting surface is vertical to the treading surface, a plurality of hanging and pulling reinforcing steel bars are pre-embedded in the step body, the hanging and pulling reinforcing steel bars are threaded steel, the hanging and pulling reinforcing steel bars are vertical to the treading surface, one end surface of each hanging and pulling reinforcing steel bar is flush with the treading surface, one end of each hanging and pulling reinforcing steel bar extending into the step body is provided with one-, the one-level dowel bar is perpendicular to the lifting steel bar, the one-level dowel bar is fixedly connected with the lifting steel bar, and a lifting hole used for being connected with a lifting ring is formed in one end face, far away from the one-level dowel bar, of the lifting steel bar.

Through adopting above-mentioned technical scheme, will hang and draw the reinforcing bar pre-buried in prefabricated stair, when the staff hoists prefabricated stair the installation, with rings and lifting eye threaded connection. Hang and draw the reinforcing bar to adopt the screw-thread steel, increase and hang the frictional force who draws reinforcing bar and prefabricated staircase, hang the afterbody of drawing the reinforcing bar and set up the one-level dowel bar, further improve and hang the fastness of being connected between drawing reinforcing bar and the prefabricated staircase to when making to hoist prefabricated staircase, prefabricated staircase is difficult for droing, has improved the security of lifting by crane.

Preferably, be provided with a plurality of support reinforcement in the step body, it is a plurality of support reinforcement is along the mutual parallel arrangement of the width direction of oblique ladder body, and is a plurality of support reinforcement is equipped with a plurality of rows along the length direction of oblique ladder body, support reinforcement includes horizontal muscle and erects the muscle, horizontal muscle and perpendicular muscle mutually perpendicular and fixed connection, horizontal muscle parallels with the face of stepping on, it parallels with the holding surface to erect the muscle.

Through adopting above-mentioned technical scheme, the structural strength of the step body can be improved to the support reinforcement, and on the one hand, when lifting by crane the installation, the pre-buried steel bar that draws that hangs in the step body is difficult for coming off from the step body, and on the other hand has strengthened the bearing capacity of the step body to improve the product property ability of prefabricated staircase.

Preferably, set up the mounting groove that is used for installing the railing on stepping on the tread, the bottom surface of mounting groove sets up the steel sheet, the steel sheet is fixed with a plurality of anchor bars with the one side of the bottom surface of mounting groove laminating mutually, the anchor bar is pre-buried in the inside of the step body, the anchor bar is evenly arranged along the length direction of steel sheet.

Through adopting above-mentioned technical scheme, the mounting groove provides the space for the installation of railing, has made things convenient for staff's railing installation operation, and steel sheet and anchor bar are used for improving the intensity of mounting groove bottom to improve the stability and the fastness of installation between railing and the prefabricated staircase.

Preferably, a plurality of anti-skidding grooves are formed in the tread surface, the anti-skidding grooves are arranged in parallel, and the anti-skidding grooves extend along the width direction of the inclined ladder body.

Through adopting above-mentioned technical scheme, anti-skidding recess is used for increasing the frictional force of people when walking on prefabricated stair to improve prefabricated stair's safety in utilization.

Preferably, be provided with first steel framework in the inclined ladder body, first steel framework includes a plurality of first steel framework and a plurality of first splice bar of mutual parallel arrangement, and is a plurality of first steel framework is square, and is a plurality of first steel framework arranges along the length direction of inclined ladder body, each first splice bar and each first steel framework fixed connection.

Through adopting above-mentioned technical scheme, set up first steel framework in the inclined ladder body, a plurality of first steel framework and a plurality of first splice bar interconnect are the netted structure in space, can transmit the whole face of the inclined ladder body with the power dispersion that a certain point received in the inclined ladder body, have effectively improved the overall structure's of the inclined ladder body intensity and anti bending capability to improve the product property ability of prefabricated staircase.

Preferably, the inside of the top step body and the bottom step body is fixedly provided with a second steel bar framework, the second steel bar framework comprises a plurality of second steel bar frames and a plurality of second connecting bars, the second steel bar frames are parallel to each other, the second steel bar frames are square, the second steel bar frames are arranged along the width direction of the inclined ladder body, and the second connecting bars are fixedly connected with the second steel bar frames and are perpendicular to each other.

Through adopting above-mentioned technical scheme, set up second steel framework in the inside of the top step ladder and the bottom step body, effectively improve the structural stability and the intensity of the top step body and the bottom step body.

Preferably, a plurality of positioning holes are formed in the top step body and the bottom step body.

Through adopting above-mentioned technical scheme, the staff can adopt the mode of round pin axle to cooperate with the locating hole when carrying out the installation of prefabricated stair, realizes the quick location of prefabricated stair, has improved the installation convenience of prefabricated stair.

Preferably, a plurality of drawing of patterns reinforcing bars have been pre-buried in the inclined ladder body, drawing of patterns reinforcing bar adopts screw-thread steel, and is a plurality of drawing of patterns reinforcing bar is located inclined ladder body length direction's one side, the axis of drawing of patterns reinforcing bar is mutually perpendicular with inclined ladder body length direction's a side, a terminal surface and inclined ladder body length direction's a side looks parallel and level of drawing of patterns reinforcing bar, the drawing of patterns reinforcing bar is deepened one end department of inclined ladder body and has been seted up the second grade connecting hole, wear to be equipped with the second grade dowel in the second grade connecting hole, the second grade dowel is mutually perpendicular with the drawing of patterns reinforcing bar, second grade dowel and drawing of patterns reinforcing bar fixed connection, the drawing of patterns hole that is used for.

Through adopting above-mentioned technical scheme, when carrying out the manufacturing of prefabricated stair, pour the concrete in the template of prefabricated stair, need carry out the drawing of patterns after the concrete solidifies. The lifting ring is connected with the threaded hole of the demoulding steel bar, so that the worker can conveniently carry out demoulding operation. The one end of drawing of patterns reinforcing bar sets up the second dowel bar and drawing of patterns reinforcing bar adopts the screw-thread steel, improves the stability and the fastness of being connected between drawing of patterns reinforcing bar and the prefabricated stair.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the hanging and pulling steel bars and the first-level joint bars, the hanging and pulling operation of workers is facilitated, and the hanging and pulling steel bars are more firmly connected with the prefabricated staircase, so that the hanging safety is improved;

2. by arranging the first steel bar framework and the second steel bar framework, the strength of the whole structure of the prefabricated staircase is effectively improved, and the product quality is improved;

3. through setting up the mounting groove, provide the operation space for the installation of railing, improve the convenience of installation.

Drawings

Fig. 1 is a schematic view of the overall structure of a prefabricated staircase according to the embodiment.

Fig. 2 is a schematic view of the internal structure of a prefabricated staircase according to the embodiment.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Description of reference numerals: 1. a stair body; 2. a top step body; 21. positioning holes; 22. a second steel bar frame; 221. a second reinforcement frame; 222. a second connecting rib; 3. a bottom step body; 4. an inclined ladder body; 41. a first steel bar frame; 411. a first reinforcement frame; 412. a first connecting rib; 42. demolding the reinforcing steel bars; 421. secondary steel bar inserting; 422. demoulding holes; 5. a step body; 51. treading the tread; 511. an anti-slip groove; 52. a support surface; 53. hoisting and pulling the steel bars; 531. first-level steel bars are inserted; 532. hoisting holes; 54. supporting the reinforcing steel bars; 541. transverse ribs; 542. erecting ribs; 55. mounting grooves; 551. a steel plate; 552. and (6) anchoring the ribs.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses prefabricated staircase. Referring to fig. 1, the prefabricated staircase includes a staircase body 1, and the staircase body 1 includes a top step body 2, a bottom step body 3, an inclined staircase body 4, and a step body 5 fixedly disposed on the surface of the inclined staircase body 4. 4 length direction's of oblique ladder body one end and the 2 fixed connection of top step body, 4 length direction's of oblique ladder body the other end and the 3 fixed connection of bottom step body, this top step body 2, bottom step body 3, oblique ladder body 4 and 5 homogeneous pouring of step body are shaped.

Referring to fig. 1 and 2, the top step body 2 and the bottom step body 3 are respectively provided with a plurality of positioning holes 21, and the number of the positioning holes 21 may be two. The inside of the top step body 2 and the bottom step body 3 is all fixed and is provided with second steel framework 22, and second steel framework 22 includes a plurality of second steel reinforcement frames 221 and a plurality of second splice bar 222, and a plurality of second steel reinforcement frames 221 are square, and a plurality of second steel reinforcement frames 221 are parallel to each other and arrange along the width direction of inclined ladder body 4, and each second splice bar 222 and second steel reinforcement frame 221 fixed connection and both mutually perpendicular.

Referring to fig. 1 and 2, be provided with first steel framework 41 in the inclined ladder body 4, first steel framework 41 includes a plurality of first splice bars 412 and a plurality of first steel framework 411, a plurality of first steel framework 411 parallel arrangement each other, and a plurality of first steel framework 411 are arranged along the length direction of inclined ladder body 4, and a plurality of first splice bars 412 extend the setting along the length direction of inclined ladder body 4, fixed connection between a plurality of first splice bars 412 and the first steel framework 411.

Referring to fig. 1 and 3, a plurality of stripping steel bars 42 are embedded in the inclined ladder body 4, and the number of the stripping steel bars 42 may be two. Demoulding reinforcing bar 42 is the deformed steel bar, demoulding reinforcing bar 42 sets up in 4 length direction's of oblique ladder body one side, demoulding reinforcing bar 42 perpendicular to 4 length direction's of oblique ladder body one side, a terminal surface and 4 length direction's of oblique ladder body one side parallel and level mutually of demoulding reinforcing bar 42, demoulding reinforcing bar 42 gos deep into the one end department of oblique ladder body 4 and has seted up the second grade connecting hole, wear to be equipped with second grade dowel 421 in the second grade connecting hole, second grade dowel 421 and demoulding reinforcing bar 42 fixed connection and mutually perpendicular, demoulding reinforcing bar 42 keeps away from the terminal surface of second grade dowel 421 and offers the drawing of patterns hole 422 that is used for being connected with rings.

Referring to fig. 1 and 2, the step body 5 includes a stepping surface 51 horizontally disposed and a supporting surface 52 perpendicular to the stepping surface 51, the stepping surface 51 is provided with a plurality of anti-slip grooves 511, and the anti-slip grooves 511 are disposed in parallel and extend in the width direction of the inclined ladder body 4. Step on and offer the mounting groove 55 that is used for installing the railing on the face 51, the bottom surface of mounting groove 55 is provided with steel sheet 551, and fixed a plurality of anchor bars 552 that are parallel to each other that are provided with on the steel sheet 551, and anchor bar 552 is pre-buried in the step body 5, and a plurality of anchor bars 552 are arranged along the length direction of inclined ladder body 4.

Referring to fig. 1 and 3, a plurality of hanging steel bars 53 are pre-buried in the step body 5, hanging steel bar 53 adopts the screw-thread steel to make, a plurality of hanging steel bar 53 can be four, four hanging steel bar 53 along this prefabricated staircase's focus symmetric distribution, hanging steel bar 53 is deep into the one end department of step body 5 and has been seted up the one-level connecting hole, wear to be equipped with one-level dowel 531 in the one-level connecting hole, one-level dowel 531 with hanging steel bar 53 fixed connection and both mutually perpendicular, hanging steel bar 53 keeps away from one-level dowel 531's a terminal surface and offers the lewis hole 532 that is used for being connected with rings. Be provided with a plurality of support reinforcement 54 in the step body 5, a plurality of support reinforcement 54 are along the mutual parallel arrangement of width direction of inclined ladder body 4, and a plurality of support reinforcement 54 are equipped with a plurality of rows along the length direction of inclined ladder body 4, and in this embodiment, a plurality of support reinforcement 54 are provided with two rows. The support bar 54 comprises a transverse bar 541 and a vertical bar 542, the transverse bar 541 and the vertical bar 542 are perpendicular to each other and fixedly connected, the transverse bar 541 is parallel to the treading surface 51, and the vertical bar 542 is parallel to the support surface 52.

The implementation principle of this application embodiment prefabricated staircase does: the staff establishes the template according to prefabricated staircase's overall dimension, with pre-buried in the template such as first steel framework 41, second steel framework 22, hang and draw reinforcing bar 53, drawing of patterns reinforcing bar 42, the staff pours concrete in the template, and after the concrete solidifies, the staff is connected rings and drawing of patterns reinforcing bar 42, takes out prefabricated staircase from the template through the equipment that lifts by crane. The second-level dowel bars 421 enable the connection between the demoulding steel bars 42 and the prefabricated staircase to be firmer. When the installation of prefabricated stair is carried out on the scene, need lift the installation with prefabricated stair, the staff is connected rings and hangs pulling reinforcement 53, can lift prefabricated stair through lifting by crane equipment, easy to assemble. The first-level dowel bar 531 enables the hanging steel bar 53 to be more firmly connected, and improves the lifting safety. First steel reinforcement frame 411 and second steel reinforcement frame 221 effectively improve the overall structure's of prefabricated stair intensity and stability, improve the product quality of this prefabricated stair. When hoisting this prefabricated staircase, locating hole 21 makes things convenient for the staff to realize the quick location of prefabricated staircase. After the prefabricated staircase is installed, the installation of the handrail needs to be carried out, the installation groove 55 provides a space for the installation of the handrail, and the convenience for installing the handrail is improved. The steel plate 551 and the anchor bars 552 are used for improving the firmness of connection between the handrail and the prefabricated staircase. The anti-skidding groove 511 on the step body 5 is used for increasing friction, and improves the safety in use of the prefabricated staircase.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a prefabricated staircase, includes stair body (1), stair body (1) includes the top step body (2), the bottom step body (3), the oblique ladder body (4) and fixed step body (5) of setting on the oblique ladder body (4) surface, the one end and the top step body (2) fixed connection of the oblique ladder body (4) length direction, the other end and the bottom step body (3) fixed connection of the oblique ladder body (4) length direction, the shaping is pour to the same body of the top step body (2), the bottom step body (3), the oblique ladder body (4) and the step body (5), its characterized in that: step body (5) set up including the level step on tread (51) and with step on tread (51) looks vertically holding surface (52), pre-buried a plurality of hanging steel bar (53) that draw in step body (5), hanging steel bar (53) is the screw-thread steel, hanging steel bar (53) perpendicular to is trampled face (51), hang a terminal surface and trample face (51) looks parallel and level of steel bar (53), hang steel bar (53) and go deep into the one end department in step body (5) and seted up the one-level connecting hole, wear to be equipped with one-level dowel bar (531) in the one-level connecting hole, one-level dowel bar (531) and hanging steel bar (53) are mutually perpendicular, one-level dowel bar (531) and hanging steel bar (53) fixed connection, hang and draw on steel bar (53) keep away from one-level dowel bar (531) the terminal surface and offer on the hand hole (532) that are used for being connected with rings.

2. A prefabricated staircase according to claim 1, characterized in that: be provided with a plurality of support reinforcement (54) in the step body (5), it is a plurality of support reinforcement (54) are along the mutual parallel arrangement of width direction of oblique ladder body (4), and is a plurality of support reinforcement (54) are equipped with a plurality of rows along the length direction of oblique ladder body (4), support reinforcement (54) are including horizontal muscle (541) and perpendicular muscle (542), horizontal muscle (541) and perpendicular muscle (542) mutually perpendicular and fixed connection, horizontal muscle (541) and trample face (51) parallel, it parallels with holding surface (52) to erect muscle (542).

3. A prefabricated staircase according to claim 1, characterized in that: the mounting groove (55) used for mounting the railing is formed in the tread surface (51), the steel plate (551) is arranged on the bottom surface of the mounting groove (55), a plurality of anchor bars (552) are fixedly arranged on one surface, which is attached to the bottom surface of the mounting groove (55), of the steel plate (551), the anchor bars (552) are embedded in the step body (5), and the anchor bars (552) are uniformly distributed along the length direction of the steel plate (551).

4. A prefabricated staircase according to claim 3, characterized in that: a plurality of anti-skidding grooves (511) are formed in the tread surface (51), the anti-skidding grooves (511) are arranged in parallel, and the anti-skidding grooves (511) extend along the width direction of the inclined ladder body (4).

5. A prefabricated staircase according to claim 1, characterized in that: be provided with first steel framework (41) in oblique ladder body (4), first steel framework (41) are including a plurality of first steel framework (411) and a plurality of first connecting rib (412) of mutual parallel arrangement, and are a plurality of first steel framework (411) are square, and are a plurality of first steel framework (411) are arranged along the length direction of oblique ladder body (4), each first connecting rib (412) and each first steel framework (411) fixed connection.

6. A prefabricated staircase according to claim 1, characterized in that: the inside of the top step body (2) and the bottom step body (3) is all fixed and is provided with second steel reinforcement frame (22), second steel reinforcement frame (22) are including a plurality of second steel reinforcement frames (221) and a plurality of second splice bar (222) of mutual parallel arrangement, and are a plurality of second steel reinforcement frame (221) are square, and are a plurality of second steel reinforcement frame (221) are arranged along the width direction of oblique ladder body (4), each second splice bar (222) and each second steel reinforcement frame (221) fixed connection and both mutually perpendicular.

7. A prefabricated staircase according to claim 6, characterized in that: the top step body (2) and the bottom step body (3) are respectively provided with a plurality of positioning holes (21).

8. A prefabricated staircase according to claim 1, characterized in that: a plurality of demoulding steel bars (42) are embedded in the inclined ladder body (4), the demoulding steel bars (42) are made of deformed steel bars, the demoulding steel bars (42) are positioned on one side of the inclined ladder body (4) in the length direction, the axial line of the demoulding reinforcing steel bar (42) is vertical to one side surface of the inclined ladder body (4) in the length direction, one end surface of the demoulding steel bar (42) is flush with one side surface of the inclined ladder body (4) in the length direction, one end of the demoulding steel bar (42) which is deep into the inclined ladder body (4) is provided with a secondary connecting hole, a secondary dowel bar (421) penetrates through the secondary connecting hole, the secondary dowel bar (421) is vertical to the demoulding steel bar (42), the secondary steel bar inserting (421) is fixedly connected with the demoulding steel bar (42), and the end face, far away from the secondary steel bar inserting (421), of the demoulding steel bar (42) is provided with a demoulding hole (422) used for being connected with the hanging ring.