CN219569400U

CN219569400U - Prefabricated stair

Info

Publication number: CN219569400U
Application number: CN202320293484.8U
Authority: CN
Inventors: 刘诚; 王海波; 任明; 廖伟; 赵鹏; 单晓雷
Original assignee: Shaanxi Zhongtian Building Industry Co ltd
Current assignee: Shaanxi Zhongtian Building Industry Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-08-22
Anticipated expiration: 2033-02-22

Abstract

The utility model relates to a prefabricated stair, which relates to the field of constructional engineering and comprises a stair main body, an embedded mechanism, a connecting assembly and a protection assembly, wherein the stair main body comprises a bottom plate and a plurality of steps, the steps are sequentially distributed along the long side direction of the bottom plate, the steps comprise a tread surface and a longitudinal supporting surface which are mutually perpendicular, and a fixing groove is reserved in the steps; the embedded mechanism is arranged below the fixed groove and comprises a fixed plate, the fixed plate is buried in the step, the connecting component comprises a fixed block, the fixed block is detachably connected with the fixed plate, the protecting component comprises a guardrail, the guardrail is vertically arranged, and the guardrail is detachably connected with the fixed block. The utility model has the effect of improving the damage of stairs.

Description

Prefabricated stair

Technical Field

The utility model relates to the field of constructional engineering, in particular to a prefabricated stair.

Background

In building construction, stairways are indispensable, and are concrete structures formed by means of concrete casting.

In the related art, in the process of stair construction, firstly, a formwork is required to be supported, a template is built into the shape of a stair, the template is fixed, then, steel bars are paved, concrete is poured in the built template structure, after the concrete is solidified, a prefabricated stair is formed, when a guardrail is required to be installed, personnel need to measure the distance between installation connecting plates on one side of the stair, afterwards, the connecting plates are fixed on one side of the stair through bolts, the guardrail is taken out, the guardrail is vertically arranged, one end of the guardrail is welded on one side, far away from a building body, of the connecting plates, and the other side of the guardrail is welded on the railing.

To the relevant technique among the above-mentioned, personnel need punch on the step of stair, later, fix the connecting plate on the stair through the corner bolt, weld the guardrail on the connecting plate again, personnel need drill the stair with the rig, can lead to the stair impaired.

Disclosure of Invention

In order to solve the problem of damage to stairs, the utility model provides a prefabricated stair.

The utility model provides a prefabricated stair which adopts the following technical scheme:

the prefabricated stair comprises a stair main body, a pre-buried mechanism, a connecting assembly and a protection assembly, wherein the stair main body comprises a bottom plate and a plurality of steps, the steps are sequentially distributed along the long side direction of the bottom plate, each step comprises a tread surface and a longitudinal supporting surface which are mutually perpendicular, and a fixing groove is reserved in each step;

the embedded mechanism is arranged below the fixed groove and comprises a fixed plate, the fixed plate is buried in the step, the connecting component comprises a fixed block, the fixed block is detachably connected with the fixed plate, the protecting component comprises a guardrail, the guardrail is vertically arranged, and the guardrail is detachably connected with the fixed block.

Through the technical scheme, when the guardrail is required to be installed, the fixed block is firstly taken out and extends into the fixed groove, then the fixed block is detachably connected with the fixed plate which is buried in the step in advance, the guardrail is taken out again, the guardrail is vertically installed, and the guardrail is detachably connected with the fixed block until the guardrail is installed.

Optionally, the pre-buried mechanism still includes fixed subassembly, fixed subassembly is located the fixed plate diapire, fixed subassembly includes two connecting rods, two the connecting rod is kept away from one side slope downward setting of fixed plate, connecting rod one end is fixed in the fixed plate.

Through adopting above-mentioned technical scheme, fixed plate one side and connecting rod fixed connection, through setting up the connecting rod, the connecting rod buries in the step, and the connecting rod is kept away from fixed plate one side slope setting, has increased embedded assembly and has buried in the steadiness in the step.

Optionally, the fixing assembly further includes two reinforcing rods, two reinforcing rods are disposed parallel to the fixing plate, and two reinforcing rods are fixed to one connecting rod respectively.

Through adopting above-mentioned technical scheme, the reinforcing rod is parallel with the fixed plate, through setting up the reinforcing rod, is favorable to increasing the embedded assembly and buries the steadiness in the step.

Optionally, the step is provided with a lifting hole on the tread surface;

the prefabricated staircase still includes the lifting assembly, the lifting assembly includes first nut and lifting rod, first nut level is fixed in the lifting hole, lifting rod threaded connection in first nut.

Through adopting above-mentioned technical scheme, when needs remove the prefabricated staircase to the position of required installation, with lifting rod one end threaded connection in first nut, later personnel are fixed with the lifting rod with the couple of crane, promote prefabricated staircase, remove prefabricated staircase to the specific position, through setting up first nut and lifting rod, be convenient for remove prefabricated staircase.

Optionally, the lifting assembly further comprises a stud, the stud is buried in the step, and the stud is in threaded connection with the first nut.

Through adopting above-mentioned technical scheme, the double-screw bolt buries in the step, and double-screw bolt one end threaded connection is in first nut, through setting up the double-screw bolt, has increased the steadiness of stair.

Optionally, the lifting assembly further comprises a boom, the boom is buried in the step, and the boom is fixed on the stud.

Through adopting above-mentioned technical scheme, the jib buries in the step, and the jib is fixed with the double-screw bolt, through setting up the jib, is favorable to increasing the steadiness of stair.

Optionally, the connecting assembly further comprises a countersunk head screw, the countersunk head screw penetrates through the fixing block and the fixing plate in sequence, and the countersunk head screw is used for fixing the fixing block and the fixing plate.

Through adopting above-mentioned technical scheme, when needing the installation fixed block, stretch into the fixed slot with the fixed block, make fixed block and fixed plate contact, afterwards, take out countersunk head screw, wear to locate fixed block and fixed plate in proper order with countersunk head screw to fixed block and fixed plate are fixed, the installation and the dismantlement of fixed block and fixed plate of being convenient for.

Optionally, the pre-embedding mechanism further comprises a fixing nut, the fixing nut is fixed on one side, far away from the fixing block, of the fixing plate, and the countersunk head screw is in threaded connection with the fixing nut.

Through adopting above-mentioned technical scheme, countersunk head screw wears to locate fixed block and fixed plate in proper order, after countersunk head screw passed the fixed plate, countersunk head screw and fixation nut threaded connection, through setting up fixation nut, countersunk head screw is convenient for to fixed block and fixed plate's fixed.

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

1. compared with the prior art, the utility model does not need to punch the stair, only needs to connect the fixed block with the fixed block which is preset to be buried in the step, and then connects the guardrail with the fixed block, thereby reducing the possibility of damage of the stair;

2. through the arrangement of the connecting rods, the connecting rods are buried in the steps, and the connecting rods are obliquely arranged towards one side far away from the fixed plate, so that the stability of the embedded assembly buried in the steps is improved;

3. through setting up the double-screw bolt, increased the steadiness of stair.

Drawings

Fig. 1 is a schematic view of the overall structure in the present embodiment;

fig. 2 is a cross-sectional view of the first view angle in the present embodiment;

FIG. 3 is an enlarged view of A in FIG. 2;

FIG. 4 is a schematic view of the overall structure of the embedded component in the present embodiment;

fig. 5 is a sectional view of the second view angle in the present embodiment;

fig. 6 is an enlarged view of B in fig. 5.

Reference numerals illustrate: 1. a stair body; 11. a bottom plate; 12. a step; 121. tread surface; 122. a support surface; 123. an anti-skid groove; 124. a boss; 1241. a fixing groove; 125. lifting holes; 2. a pre-burying mechanism; 21. a fixing plate; 22. a fixing assembly; 221. a fixed rod; 222. a connecting rod; 223. a reinforcing rod; 23. a fixing nut; 3. a connection assembly; 31. a fixed block; 32. a protection plate; 321. a countersunk hole; 33. countersunk head screws; 4. a protective assembly; 41. a connecting plate; 42. guard bars; 43. railing; 5. a lifting assembly; 51. a first nut; 52. a stud; 53. a boom; 54. and a lifting rod.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-6.

The embodiment of the utility model discloses a prefabricated stair. Referring to fig. 1, 2 and 3, a prefabricated staircase comprises a staircase body 1, a pre-buried mechanism, a connection assembly 3, a protection assembly 4 and a lifting assembly 5.

Referring to fig. 1 and 2, the stair body 1 includes a base plate 11 and a plurality of steps 12 integrally provided, the steps 12 are sequentially distributed along a long side direction of the base plate 11, the steps 12 include a tread surface 121 and a longitudinal supporting surface 122 which are perpendicular to each other, at least one anti-slip groove 123 is formed in the tread surface 121 of the steps 12, in this embodiment, the number of the anti-slip grooves 123 is two, at least one boss 124 is convexly provided on each of the tread surface 121 and the longitudinal supporting surface 122 of the steps 12, the boss 124 and the steps 12 are integrally provided, and in this embodiment, one boss 124 is provided on each of the tread surface 121 and the longitudinal supporting surface 122.

Referring to fig. 2, 3 and 4, a fixing groove 1241 is reserved on the boss 124 of the tread surface 121 on a part of the steps 12, in this embodiment, two steps 12 are spaced between two fixing grooves 1241 distributed adjacently up and down, the fixing groove 1241 is an inverted trapezoid groove, and the fixing groove 1241 extends to the steps 12 after penetrating the boss 124.

Referring to fig. 2, 3 and 4, the embedding mechanism 2 is embedded in the step 12 and located below the fixing groove 1241, the embedding mechanism 2 includes a fixing plate 21, a fixing assembly 22 and a fixing nut 23, the fixing plate 21 is horizontally arranged, the top wall of the fixing plate 21 forms the bottom wall of the fixing groove 1241, and the side wall of the fixing plate 21 is attached to the inner side wall of the fixing groove 1241.

Referring to fig. 2, 3 and 4, in the present embodiment, the number of the fixing assemblies 22 is two, the fixing assemblies 22 and the fixing nuts 23 are both located at one side of the fixing plate 21 away from the fixing groove 1241, the fixing nuts 23 are welded to one side of the fixing plate 21 away from the fixing groove 1241, the two fixing assemblies 22 are arranged side by side, and the fixing nuts 23 are located between the two fixing assemblies 22; the fixing assembly 22 comprises a fixing rod 221, two connecting rods 222 and two reinforcing rods 223, wherein the fixing rod 221 is welded on one side of the fixing plate 21 far away from a fixing groove 1241, two ends of the fixing rod 221 are respectively welded with one connecting rod 222, the connecting rods 222 are obliquely downwards arranged towards one side far away from the fixing rod 221, and the distance between the two connecting rods 222 is sequentially increased from top to bottom; the reinforcement rods 223 are arranged in parallel with the fixing rods 221, and one end of each of the two connecting rods 222, which is far away from the fixing rods 221, is welded with one reinforcement rod 223.

Referring to fig. 2, 3 and 4, the connecting assembly 3 includes a fixing block 31, a protection plate 32 and a countersunk head screw 33, in this embodiment, the longitudinal section of the fixing block 31 is in an inverted trapezoid shape, the side wall of the fixing block 31 is attached to the inner side wall of the fixing groove 1241, the fixing block 31 contacts with one side of the fixing plate 21 away from the fixing rod 221, one side of the fixing block 31 away from the fixing plate 21 is welded to the protection plate 32, the outer edge of the protection plate 32 is lapped on the top wall of the boss 124, a countersunk head hole 321 is formed in the protection plate 32, the countersunk head hole 321 penetrates through the protection plate 32 and the fixing block 31, the countersunk head screw 33 penetrates through the countersunk head hole 321, a through hole for the countersunk head screw 33 to penetrate through is formed in the fixing plate 21, and the countersunk head screw 33 penetrates through the through hole and is in threaded connection with the fixing nut 23.

Referring to fig. 4 and 5, the protection assembly 4 includes a connection plate 41, a guard rail 42 and a rail 43, the connection plate 41 is a rectangular plate, the connection plate 41 is fixedly connected to one side of the guard plate 311 away from the fixed block 31 through screws, the guard rail 42 is vertically arranged, one end of the guard rail 42 is welded to the connection plate 41, the other end is welded to the rail 43, the rail 43 is obliquely arranged, and the inclination direction of the rail 43 is consistent with that of the step 12.

Referring to fig. 5 and 6, the lifting assembly 5 includes a first nut 51, a stud 52, a boom 53 and a lifting rod 54, the step 12 is provided with at least one lifting hole 125 on the tread surface 121, and the first nut 51 is buried and fixed in the lifting hole 125; the stud 52 and the suspender 53 are buried in the step 12, the stud 52 is vertically arranged, the top of the stud 52 is in threaded connection with the first nut 51, the suspender 53 is perpendicular to the stud 52, and the suspender 53 is welded with the stud 52; the lifting rod 54 is parallel to the guardrail 42, the bottom end of the lifting rod 54 is threaded into the first nut 51, and the bottom wall of the lifting rod 54 is in contact with the top wall of the stud 52.

The implementation principle of the prefabricated stairway provided by the embodiment of the utility model is as follows: firstly, fixing a pouring template, forming a pouring die cavity by the pouring template, then, providing a fixing hole at a designated position of the pouring template, taking out a screw rod, penetrating the screw rod into the fixing hole, connecting the screw rod with a first nut 51 in a threaded manner, rotating the screw rod again to attach the first nut 51 to the inner wall of the pouring template, and then, connecting one end of a stud 52 with the first nut 51 in a threaded manner, and welding the other end of the stud 52 with a suspender 53; likewise, after the connecting hole is formed in the designated position of the pouring template, a connecting block is welded in the pouring template, the other screw rod is taken out, the screw rod sequentially penetrates through the connecting hole and the connecting block and then is in threaded connection with the fixing nut 23, the fixing plate 21 is fixed in the pouring die cavity, at the moment, concrete is poured in the pouring die cavity, after the concrete is solidified, the two screw rods are screwed, and the pouring template is removed, so that the prefabricated staircase is formed.

When the prefabricated staircase is required to be installed, one end of the lifting rod 54 is connected with the first nut 51 in a threaded mode, then the lifting rod 54 is fixed by a crane, the prefabricated staircase is moved to a position required to be installed, after the installation is completed, the lifting rod 54 is taken down, and the screw hole of the first nut 51 is plugged by concrete.

When the fixing block 31 needs to be installed, the protection plate 32 is welded on the fixing block 31, one end, far away from the protection plate 32, of the fixing block 31 is contacted with the fixing plate 21, and then the countersunk head screw 33 stretches into the countersunk head hole 321, so that the countersunk head screw 33 sequentially penetrates through the fixing block 31 and the fixing plate 21 and is connected with the fixing nut 23 in a threaded manner.

When the guard rail 42 and the rail 43 are required to be installed, the connecting plate 41 is fixedly connected to the side, away from the fixed block 31, of the guard plate 32 through screws, and then one end of the guard rail 42 is welded to the connecting plate 41, and the other end is welded to the rail 43.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. Prefabricated stairway, comprising a stairway body (1), characterized in that: the stair is characterized by further comprising an embedded mechanism (2), a connecting assembly (3) and a protection assembly (4), wherein the stair body (1) comprises a bottom plate (11) and a plurality of steps (12), the steps (12) are sequentially distributed along the long side direction of the bottom plate (11), the steps (12) comprise treading surfaces (121) and longitudinal supporting surfaces (122) which are perpendicular to each other, and fixing grooves (1241) are reserved in the steps (12);

the embedded mechanism (2) is arranged below the fixed groove (1241), the embedded mechanism (2) comprises a fixed plate (21), the fixed plate (21) is buried in the step (12), the connecting component (3) comprises a fixed block (31), the fixed block (31) is detachably connected with the fixed plate (21), the protection component (4) comprises a guardrail (42), the guardrail (42) is vertically arranged, and the guardrail (42) is detachably connected with the fixed block (31).

2. A prefabricated staircase according to claim 1, characterized in that: the embedded mechanism (2) further comprises a fixing assembly (22), the fixing assembly (22) is located on the bottom wall of the fixing plate (21), the fixing assembly (22) comprises two connecting rods (222), the two connecting rods (222) are obliquely downwards arranged towards one side far away from the fixing plate (21), and one end of each connecting rod (222) is fixed on the fixing plate (21).

3. A prefabricated staircase according to claim 2, characterized in that: the fixing assembly (22) further comprises two reinforcing rods (223), the two reinforcing rods (223) are arranged in parallel with the fixing plate (21), and the two reinforcing rods (223) are respectively fixed with one connecting rod (222).

4. A prefabricated staircase according to claim 1, characterized in that: the step (12) is provided with a lifting hole (125) on the tread (121);

prefabricated formula stair still includes hoisting assembly (5), hoisting assembly (5) include first nut (51) and lift bar (54), first nut (51) level is fixed in lifting hole (125), lift bar (54) threaded connection in first nut (51).

5. A prefabricated staircase according to claim 4, characterized in that: the lifting assembly (5) further comprises a stud (52), the stud (52) is buried in the step (12), and the stud (52) is in threaded connection with the first nut (51).

6. A prefabricated staircase according to claim 5, characterized in that: the lifting assembly (5) further comprises a hanging rod (53), the hanging rod (53) is buried in the step (12), and the hanging rod (53) is fixed to the stud (52).

7. A prefabricated staircase according to claim 1, characterized in that: the connecting assembly (3) further comprises countersunk head screws (33), the countersunk head screws (33) sequentially penetrate through the fixing blocks (31) and the fixing plates (21), and the countersunk head screws (33) are used for fixing the fixing blocks (31) and the fixing plates (21).

8. A prefabricated staircase according to claim 7, characterized in that: the embedded mechanism (2) further comprises a fixing nut (23), the fixing nut (23) is fixed on one side, far away from the fixing block (31), of the fixing plate (21), and the countersunk head screw (33) is in threaded connection with the fixing nut (23).