Prefabricated stair for fabricated building

Abstract

The utility model relates to the technical field of prefabricated stairs, and discloses a prefabricated stair for an assembly type building, which comprises a stair body and a handrail arranged on the stair body, an adjusting mechanism is arranged on the stair body, and a dismounting mechanism is arranged on one side of the adjusting mechanism. The first pull rods at the upper end and the lower end of the stair body are pulled to move upwards to drive the pull plates on the left side and the right side to move, meanwhile, the pull plates have the stretching effect on the first springs, and then the pull plates drive the positioning rods to move upwards, so that the positioning rods are separated from the clamping positioning connection with the positioning holes; at the moment, a first pull rod drives a fixing plate and a sliding block to move, when the sliding block moves, a connecting sliding plate is driven to slide on the inner wall of a sliding frame, the positions of the armrests on the left side and the right side are adjusted, after the appropriate positions are adjusted, the first pull rod is loosened, at the moment, a first spring rebounds and resets, and a positioning rod is driven to be inserted into a positioning hole; and positioning is completed, and adjustment of the distance of the handrail is completed.

Description

Technical Field

[0001] The utility model belongs to the technical field of prefabricated stairs, and in particular relates to a prefabricated staircase for assembled buildings. Background Art

[0002] Stairs are important structural components in buildings. Most of the stairs in traditional buildings are cast-in-place concrete stairs. During construction, it is necessary to first support the formwork, lay steel bars, and then cast concrete. Since the stair steps are inclined and irregular in shape, it is difficult to pour concrete on site. The surface after concrete pouring is prone to be rough and uneven, and requires plastering to level it, which has a high manufacturing cost. With the continuous development of construction technology, prefabricated stair slabs have been widely used in the construction field. Prefabricated stair slabs have the characteristics of low production cost and fast construction speed.

[0003] A search of CN218205319U discloses a prefabricated staircase for assembled buildings, in which an upper stair beam and an upper platform, as well as a lower stair beam and a lower platform are fixedly connected by embedded parts, thereby achieving the effect of fixing the position of the stair body and completing the installation of the prefabricated staircase. The buffer block abuts against the bottom surface of the stair body, so that the suspended position between the bottom surface of the stair body and the bottom surface of the upper stair beam is supported. When the stair body is vibrated, part of the vibration is transmitted to the upper platform through the buffer block, thereby increasing the seismic resistance of the stair body.

[0004] The guardrail in the prefabricated staircase is directly fixedly connected to the staircase, so when a large object needs to be transported, the guardrail will block the transportation, making it difficult to transport the object and inconvenient to use.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the above technical problem that the guardrail in the prefabricated staircase is directly fixed to the staircase, so when it is necessary to transport a large volume of objects, the guardrail will block the transportation, making it difficult to transport the objects and inconvenient to use, the basic concept of the technical solution adopted by the utility model is:

[0007] A prefabricated staircase for assembled buildings, comprising a staircase body;

[0008] The handrail is arranged on the staircase body, and the staircase body is provided with an adjustment mechanism, and a disassembly mechanism is arranged on one side of the adjustment mechanism, and the adjustment mechanism includes a slider:

[0009] The top surface of the stair body is provided with a sliding groove, the outer wall of the slider is slidably connected to the inner wall of the sliding groove, the outer wall of the slider is fixedly connected to a connecting slide plate, the outer wall of the connecting slide plate is slidably connected to a sliding frame, the outer wall of the sliding frame is fixedly connected to the inner wall of the sliding groove, the outer wall of the slider is fixedly connected to a fixing plate, the top of the fixing plate is provided with a sliding hole, the inner wall of the sliding hole is slidably connected to a positioning rod, the top of the positioning rod is fixedly connected to a pull plate, the bottom end of the pull plate is fixedly connected to a first spring, the first spring is fixedly connected to the top of the fixing plate at one end away from the pull plate, the top of the fixing plate is fixedly connected to a first pull rod, and the top of the stair body is provided with a positioning hole.

[0010] As a preferred embodiment of the present utility model, the disassembly and assembly mechanism includes a second pull rod, a slot is provided at the top of the sliding block, a through hole is provided on the inner wall of the slot, the outer wall of the second pull rod is slidably connected to the inner wall of the through hole, one end of the second pull rod is fixedly connected to a fixing block, the fixing block is fixedly connected to an end of the second pull rod close to a second spring, the second spring is fixedly connected to the inner wall of the through hole at one end away from the fixing block, the bottom end of the armrest is fixedly connected to a connecting rod, a clamping hole is provided on the outer wall of the connecting rod, and the fixing block is clamped and connected to the inner wall of the clamping hole.

[0011] As a preferred embodiment of the present invention, the slide groove provided at the top of the staircase body is in an inverted "T" shape, and the outer wall of the slider fits snugly with the inner wall of the slide groove.

[0012] As a preferred embodiment of the utility model, the inner wall of the positioning hole fits snugly with the outer wall of the positioning rod, the number of the sliders is four, and the sliders form a group of two and are symmetrically distributed on the upper, lower, left and right sides of the stair body.

[0013] As a preferred embodiment of the utility model, the bottom end of the connecting rod is provided with an inclined surface, and the top end of the fixing block is provided with an inclined surface, and the outer walls of the two are fitted together.

[0014] As a preferred implementation of the utility model, the inner wall of the clamping hole provided on the outer wall of the connecting rod fits snugly with the outer wall of the fixing block.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] According to the utility model, the first pull rods at the upper and lower ends of the stair body are pulled upward to move, thereby driving the pull plates on the left and right sides to move upward. At the same time, the pull plates will drive the first spring to stretch, and then the pull plates drive the positioning rod to move upward, so that the positioning rod is disengaged from the engaged positioning connection with the positioning hole. After that, the first pull rod can be pulled to move left and right. At this time, the first pull rod drives the fixed plate and the slider to move. When the slider moves, it drives the connecting slider to slide on the inner wall of the slide frame. In this way, the position of the handrails on the left and right sides can be adjusted. When adjusted to the appropriate position, the first pull rod is released. At this time, the first spring will rebound and reset, driving the positioning rod to be inserted into the positioning hole, completing the positioning, and completing the adjustment of the handrail distance.

[0017] According to the utility model, the second pull rod is pulled to move in the directions of the left and right sides, and when the second pull rod moves, it will drive the fixed block to move. When the fixed block moves, the second spring will be squeezed and compressed. At this time, the fixed block will be disengaged from the clamping hole opened on the outer wall of the connecting rod. Then the connecting rod is pulled upward to make the connecting rod disengage from the slot at the top of the slider, so that the handrail can be disassembled, which is convenient for the staff to assemble and transport. During installation, it is only necessary to insert the connecting rod into the slot at the top of the slider. At this time, the inclined surface setting at the bottom end of the connecting rod will contact and squeeze the fixed block until the clamping hole moves to the position of the fixed block, and the second spring rebounds and resets to drive the fixed block to be inserted therein, thereby completing the installation of the handrail.

[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the attached picture:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the separation structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0023] Figure 4 This is a schematic diagram of the separation and cross-sectional structure of the disassembly and assembly mechanism of the utility model

[0024] In the figure: 1. stair body; 2. handrail; 31. adjustment mechanism; 311. slider; 312. connecting slide plate; 313. slide frame; 314. fixing plate; 315. positioning rod; 316. pull plate; 317. first spring; 318. first pull rod; 319. positioning hole; 32. disassembly and assembly mechanism; 321. second pull rod; 322. fixing block; 323. second spring; 324. connecting rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0026] like Figures 1 to 4 As shown, a prefabricated staircase for assembled buildings includes a staircase body 1, a handrail 2 arranged on the staircase body 1, an adjustment mechanism 31 is arranged on the staircase body 1, a disassembly mechanism 32 is arranged on one side of the adjustment mechanism 31, the adjustment mechanism 31 includes a slider 311, a slide groove is opened on the top surface of the staircase body 1, the outer wall of the slider 311 is slidably connected to the inner wall of the slide groove, the outer wall of the slider 311 is fixedly connected to a connecting slide 312, the outer wall of the connecting slide 312 is slidably connected to a slide frame 313, and the outer wall of the slide frame 313 is fixedly connected to the inner wall of the slide groove. The sliding block 311 is fixedly connected to the inner wall of the slide groove, and the outer wall of the slider 311 is fixedly connected to a fixing plate 314, a sliding hole is provided at the top of the fixing plate 314, a positioning rod 315 is slidably connected to the inner wall of the sliding hole, a pull plate 316 is fixedly connected to the top of the positioning rod 315, a first spring 317 is fixedly connected to the bottom end of the pull plate 316, and the end of the first spring 317 away from the pull plate 316 is fixedly connected to the top of the fixing plate 314, a first pull rod 318 is fixedly connected to the top of the fixing plate 314, and a positioning hole 319 is provided at the top of the stair body 1.

[0027] Furthermore, the slide groove opened at the top of the stair body 1 is in an inverted "T" shape, and the outer wall of the slider 311 fits well with the inner wall of the slide groove, which can better guide the slider 311 on the inner wall of the slide groove to improve the sliding stability, and at the same time, it can also limit the slider 311.

[0028] Furthermore, the inner wall of the positioning hole 319 fits well with the outer wall of the positioning rod 315, and there are four sliders 311. The sliders 311 are grouped in two and are symmetrically distributed on the upper, lower, left and right sides of the stair body 1, so as to ensure the fit of the positioning rod 315 after being inserted into the positioning hole 319, thereby improving the stability after installation. The sliders 311 are divided into four upper and lower parts, which can simultaneously install and fix the upper and lower ends of the handrail 2, thereby improving the stability after installation.

[0029] The disassembly and assembly mechanism 32 includes a second pull rod 321, a slot is provided at the top of the slider 311, a through hole is provided on the inner wall of the slot, the outer wall of the second pull rod 321 is slidably connected to the inner wall of the through hole, one end of the second pull rod 321 is fixedly connected to a fixing block 322, the end of the fixing block 322 close to the second pull rod 321 is fixedly connected to a second spring 323, the end of the second spring 323 away from the fixing block 322 is fixedly connected to the inner wall of the through hole, the bottom end of the armrest 2 is fixedly connected to a connecting rod 324, the outer wall of the connecting rod 324 is provided with a clamping hole, and the fixing block 322 is clamped and connected to the inner wall of the clamping hole.

[0030] Furthermore, a slope is provided at the bottom end of the connecting rod 324, and a slope is provided at the top end of the fixing block 322, and the outer walls of the two are fitted together, so that when the connecting rod 324 moves downward, it can contact and squeeze the top end of the fixing block 322, thereby separating the two fixing blocks 322 from each other, thereby facilitating installation.

[0031] Furthermore, the inner wall of the clamping hole formed on the outer wall of the connecting rod 324 fits snugly with the outer wall of the fixing block 322 , which can improve the stability of the fixing block 322 after it is inserted into the inner wall of the clamping hole and prevent shaking.

[0032] The implementation principle of a prefabricated staircase for assembled buildings in this embodiment is as follows: when the distance of the handrail 2 needs to be adjusted, first pull the first pull rods 318 at the upper and lower ends of the stair body 1 upward, thereby driving the pull plates 316 on the left and right sides to move upward, and at the same time, the pull plates 316 will drive the first springs 317 to stretch, and then the pull plates 316 drive the positioning rods 315 to move upward, so that the positioning rods 315 are separated from the engaged positioning connection with the positioning holes 319, and then the first pull rods 318 can be pulled to move left and right. At this time, the first pull rods 318 drive the fixing plates 314 and the sliders 311 to move, and when the sliders 311 move, they drive the connecting sliders 312 to slide on the inner walls of the slide frames 313, so that the positions of the handrails 2 on the left and right sides can be adjusted. When adjusted to the appropriate position, release the first pull rods 318, and the first springs 317 will rebound and reset, driving the positioning rods 315 to insert into the positioning holes 319, completing the positioning, and completing the adjustment of the distance of the handrails 2.

[0033] When the armrest 2 needs to be disassembled, the second pull rod 321 can be pulled to move in the directions of the left and right sides. When the second pull rod 321 moves, it will drive the fixing block 322 to move. When the fixing block 322 moves, the second spring 323 will be squeezed and compressed. At this time, the fixing block 322 will be disengaged from the card hole opened on the outer wall of the connecting rod 324, and then the connecting rod 324 is pulled upward to make the connecting rod 324 disengage from the slot at the top of the slider 311, so that the armrest 2 can be disassembled, which is convenient for the staff to assemble and transport. During installation, it is only necessary to insert the connecting rod 324 into the slot at the top of the slider 311. At this time, the inclined surface setting at the bottom end of the connecting rod 324 will contact and squeeze the fixing block 322 until the card hole moves to the position of the fixing block 322, and the second spring 323 rebounds and resets to drive the fixing block 322 to be inserted therein, thereby completing the installation of the armrest 2.

Claims

1. A prefabricated staircase for assembled buildings, comprising a staircase body (1); The handrail (2) provided on the staircase body (1) is characterized in that: The staircase body (1) is provided with an adjustment mechanism (31), one side of the adjustment mechanism (31) is provided with a disassembly mechanism (32), and the adjustment mechanism (31) comprises a sliding block (311): A sliding groove is provided on the top surface of the staircase body (1); the outer wall of the slider (311) is slidably connected to the inner wall of the sliding groove; the outer wall of the slider (311) is fixedly connected to a connecting slider (312); the outer wall of the connecting slider (312) is slidably connected to a sliding frame (313); the outer wall of the sliding frame (313) is fixedly connected to the inner wall of the sliding groove; the outer wall of the slider (311) is fixedly connected to a fixing plate (314); a sliding hole is provided at the top of the fixing plate (314); a positioning rod (315) is slidably connected to the inner wall of the sliding hole; the top of the positioning rod (315) is fixedly connected to a pull plate (316); the bottom end of the pull plate (316) is fixedly connected to a first spring (317); one end of the first spring (317) away from the pull plate (316) is fixedly connected to the top of the fixing plate (314); the top of the fixing plate (314) is fixedly connected to a first pull rod (318); and a positioning hole (319) is provided at the top of the staircase body (1).

2. The prefabricated staircase for assembled buildings according to claim 1, characterized in that: The disassembly and assembly mechanism (32) comprises a second pull rod (321), a slot is provided at the top of the slider (311), a through hole is provided on the inner wall of the slot, the outer wall of the second pull rod (321) is slidably connected to the inner wall of the through hole, one end of the second pull rod (321) is fixedly connected to a fixing block (322), an end of the fixing block (322) close to the second pull rod (321) is fixedly connected to a second spring (323), an end of the second spring (323) away from the fixing block (322) is fixedly connected to the inner wall of the through hole, and the bottom end of the handrail (2) is fixedly connected to a connecting rod (324), a clamping hole is provided on the outer wall of the connecting rod (324), and the fixing block (322) is clamped and connected to the inner wall of the clamping hole.

3. The prefabricated staircase for assembled buildings according to claim 1, characterized in that: The slide groove provided at the top of the staircase body (1) is in an inverted "T" shape, and the outer wall of the sliding block (311) fits snugly with the inner wall of the slide groove.

4. The prefabricated staircase for assembled buildings according to claim 1, characterized in that: The inner wall of the positioning hole (319) fits snugly with the outer wall of the positioning rod (315), the number of the sliding blocks (311) is four, and the sliding blocks (311) are arranged in a group of two in a symmetrical structure and are distributed on the upper, lower, left and right sides of the staircase body (1).

5. The prefabricated staircase for assembled buildings according to claim 2, characterized in that: The bottom end of the connecting rod (324) is provided with an inclined surface, and the top end of the fixing block (322) is provided with an inclined surface, and the outer walls of the two are fitted against each other.

6. The prefabricated staircase for assembled buildings according to claim 2, characterized in that: The inner wall of the clamping hole formed on the outer wall of the connecting rod (324) fits snugly with the outer wall of the fixing block (322).

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