An assembled stair edge self-locking type protective fence

Abstract

The utility model discloses an assembled stair temporary edge self -locking type protective fence, including a plurality of stand, two adjacent stand between being equipped with two horizontal block subassembly setting in upside and downside, be equipped with self -locking subassembly on the stand, and the horizontal block subassembly is connected through the self -locking subassembly between the stand, and the bottom of stand is equipped with connecting component, and two upside and downside horizontal block subassembly between being equipped with reinforcing component, through the self -locking subassembly in, spring pushes the positioning column and the positioning hole of horizontal block subassembly and is connected, forms stable self -locking structure, can resist external force impact, avoids horizontal block subassembly and stand accidental uncoupling, and the protection reliability is improved obviously, through the bar, can control the positioning column telescopic fast, realizes horizontal block subassembly and the quick assembly and disassembly of stand, and the connecting component is adjusted by screw rod and is clamped, can be fixed on the stair step fast, need not welding or complex bolt operation, and the installation time is greatly shortened, and the cover of anti -drop piece and the convex column form annular cavity, limit the bar displacement, avoid the positioning column and separate the through -hole because of accidental stress.

Description

Technical Field

[0001] This utility model relates to the field of building construction safety protection technology, and in particular to a prefabricated staircase edge self-locking protective railing. Background Technology

[0002] Staircase edge guardrails are a key facility for construction safety protection. Their core function is to effectively enclose the edges of stairs during the construction phase to prevent construction workers from falling accidentally and to ensure work safety.

[0003] In existing technologies, such as the telescopic guardrail for staircases disclosed in CN222759436U, although the connection between the support column and the staircase is achieved through structures such as threaded rods and fixing plates, there are obvious defects in the connection design between the horizontal bar and the vertical post: it adopts a simple locking block and slot structure with limited locking depth and lacks self-locking function. In the complex environment of building construction, the guardrail is often subjected to external forces such as collisions with construction materials and people leaning on it, which can easily cause the locking block and slot to detach, resulting in loosening of the connection between the horizontal bar and the vertical post, a significant decrease in the overall structural stability, and difficulty in continuously performing its protective function, posing a serious safety hazard.

[0004] In addition, traditional guardrails are mostly installed by welding or bolting, which not only has low installation and disassembly efficiency, but also causes damage to the components due to repeated disassembly and assembly, making them difficult to reuse and increasing construction costs.

[0005] Therefore, there is an urgent need for a prefabricated stair edge protection railing that is self-locking, has a firm connection, is easy to install, and is reusable. Utility Model Content

[0006] The purpose of this utility model is to provide a prefabricated staircase edge self-locking protective railing to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A prefabricated staircase edge-locking guardrail includes multiple posts, with two horizontal guard assemblies arranged vertically between two adjacent posts. Each post has a self-locking assembly, and the horizontal guard assemblies are connected to the posts via the self-locking assemblies. A connecting assembly is located at the bottom of each post, and a reinforcing assembly is located between the two vertically arranged horizontal guard assemblies. The guardrail is further characterized by:

[0009] The column has a through hole, one side of the inner cavity of the through hole is connected to a through groove, and one side of the inner cavity of the through groove is connected to a recess.

[0010] The self-locking assembly includes a spring, two positioning posts and a lever. The spring is located in the inner cavity of the through hole and is fixedly connected between the two positioning posts. The positioning posts are slidably connected to the inner cavity of the through hole, and one end of the positioning post extends through to the outside of the upright and engages with the end of the crossbar assembly. One end of the lever is integrally formed with the positioning post, and the other end extends through the through groove into the inner cavity of the groove.

[0011] As a preferred technical solution, the crossbar assembly includes a crossbar, two sleeves and a positioning hole. The two sleeves are respectively located at both ends of the crossbar, the positioning hole is opened at the end of the crossbar, and the end of the positioning post away from the spring is engaged with the inner cavity of the corresponding positioning hole.

[0012] As a preferred technical solution, the sleeve includes a sleeve and a clamp. The sleeve is threaded onto the end of the crossbar, and the clamp is fixedly connected to the end of the sleeve facing the column and fits against the surface of the column.

[0013] As a preferred technical solution, the self-locking assembly further includes an anti-detachment component placed in the groove, wherein the groove and the central axis of the through hole are arranged perpendicular to each other, and the through hole and the central axis of the crossbar are on the same straight line.

[0014] As a preferred technical solution, the anti-detachment component includes a cover disposed in the inner cavity of the groove, the inner cavity of the cover is integrally formed with a protruding post, and an annular cavity is formed between the inner wall surface of the cover and the outer surface of the protruding post, and the end of the lever away from the positioning post is inserted into the annular cavity.

[0015] As a preferred technical solution, the inner wall of the groove is provided with an internal thread, and the outer surface of the cover is provided with an external thread. The cover is threadedly connected to the inner cavity of the groove through the engagement of the external thread and the internal thread.

[0016] As a preferred technical solution, the clamp is provided with a clearance groove that is compatible with the cover.

[0017] As a preferred technical solution, the connecting assembly includes a base, a screw, and a clamping plate. The base is fixedly connected to the bottom end of the column. The screw is threaded through one side of the top of the base. The clamping plate is slidably connected to the inner cavity of the base. The bottom end of the screw is rotatably connected to the top of the clamping plate. A placement cavity for stair steps is formed between the bottom of the clamping plate and the bottom of the inner wall of the base.

[0018] As a preferred technical solution, the reinforcement component includes an X-shaped frame, T-shaped protrusions, and supports. The X-shaped frame is located between two vertically arranged crossbars. One T-shaped protrusion is fixedly connected to each of the four ends of the X-shaped frame. One support is fixedly connected to each end of the crossbar surface, corresponding to the T-shaped protrusions. The T-shaped protrusions are slidably connected to the inner cavity of the corresponding support. The support is located between two sleeves on the crossbar.

[0019] As a preferred technical solution, a limiting ring is integrally formed on the surface of the socket, and one side of the limiting ring contacts the T-shaped protrusion near the socket.

[0020] This utility model has at least the following beneficial effects:

[0021] This application utilizes a self-locking assembly where a spring pushes the positioning post to engage with the positioning hole of the crossbar assembly, forming a stable self-locking structure that resists external impacts and prevents the crossbar assembly from accidentally detaching from the upright, significantly improving protection reliability. A lever allows for quick control of the positioning post's extension and retraction, enabling rapid assembly and disassembly of the crossbar assembly and upright. The connecting assembly, via a screw-adjustable clamp, can be quickly fixed to the stair steps without welding or complex bolting, greatly reducing installation time. The anti-detachment component's cover and protrusion form an annular cavity, limiting lever displacement and preventing the positioning post from accidentally detaching from the through hole due to force. Simultaneously, the cover and groove are threadedly connected, preventing the anti-detachment component from loosening itself. All components are detachable, allowing for individual replacement after wear, eliminating the need for complete scrapping and reducing construction costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is an exploded view of the structure of the column and crossbar assembly of this utility model;

[0024] Figure 3 This is an exploded view of the structure of the crossbar assembly and the reinforcing assembly of this utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of the column and self-locking assembly of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the self-locking component of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the socket of this utility model.

[0028] In the diagram: 100, column; 110, through hole; 120, through groove; 130, groove; 200, crossbar assembly; 210, crossbar; 220, socket; 221, sleeve; 2211, limit ring; 222, clamp; 2221, clearance groove; 230, positioning hole; 300, self-locking assembly; 310, spring; 320, positioning post; 330, lever; 340, anti-detachment component; 341, cover; 342, protruding post; 400, connecting assembly; 410, base; 420, screw; 430, clamping plate; 500, reinforcing assembly; 510, X-frame; 520, T-shaped protrusion; 530, support. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6 This utility model provides a prefabricated staircase edge-locking guardrail, including multiple posts 100, crossbar assemblies 200, self-locking assemblies 300, connecting assemblies 400, and reinforcing assemblies 500. Two crossbar assemblies 200 are arranged vertically between two adjacent posts 100. The self-locking assemblies 300 are mounted on the posts 100 and connected to the posts 100 via the self-locking assemblies 300. The connecting assemblies 400 are located at the bottom of the posts 100. The reinforcing assemblies 500 are located between the two vertically arranged crossbar assemblies 200. Each post 100 has a through hole 110, one side of which is connected to a through groove 120, and one side of which is connected to a recess 130. The self-locking assembly 300 includes a spring 3. 10. Two positioning posts 320 and a lever 330, with a spring 310 located in the inner cavity of the through hole 110 and fixedly connected between the two positioning posts 320. The positioning posts 320 are slidably connected to the inner cavity of the through hole 110, with one end extending through to the outside of the column 100 and engaging with the end of the crossbar assembly 200. One end of the lever 330 is integrally formed with the positioning posts 320, and the other end extends through the through groove 120 into the inner cavity of the groove 130. The spring 310 pushes the positioning posts 320 to engage with the crossbar assembly 200, achieving automatic locking between the crossbar assembly 200 and the column 100, solving the problem of easy loosening in traditional snap-fit ​​structures. At the same time, the lever 330 design provides an operating fulcrum for subsequent quick assembly and disassembly, laying the foundation for the convenience and stability of the overall structure.

[0031] The crossbar assembly 200 includes a crossbar 210, two sleeves 220, and a positioning hole 230. The two sleeves 220 are respectively located at both ends of the crossbar 210, and the positioning hole 230 is opened at the end of the crossbar 210. The end of the positioning post 320 away from the spring 310 is engaged with the inner cavity of the corresponding positioning hole 230. Through the precise docking of the positioning hole 230 and the positioning post 320, the coaxiality of the connection between the two ends of the crossbar assembly 200 and the column 100 is ensured, and the connection is prevented from loosening due to misalignment. At the same time, the sleeves 220 provide transition support for the fit between the crossbar 210 and the column 100, enhancing the lateral force stability.

[0032] The sleeve 220 includes a sleeve 221 and a clamp 222. The sleeve 221 is threaded onto the end of the crossbar 210, and the clamp 222 is fixedly connected to the end of the sleeve 221 facing the column 100 and is in contact with the surface of the column 100. The threaded sleeve 221 can flexibly adjust the fit between the clamp 222 and the column 100 to adapt to different column diameters or surface precisions. The tight fit between the clamp 222 and the surface of the column 100 increases the contact area, distributing the force of the crossbar 210 to the surface of the column 100, reducing local stress concentration, and improving the overall resistance to deformation.

[0033] The self-locking assembly 300 also includes an anti-disengagement component 340 placed in the groove 130. The groove 130 and the central axis of the through hole 110 are perpendicular to each other, and the central axis of the through hole 110 and the crossbar 210 are on the same straight line. The anti-disengagement component 340 restricts the excessive displacement of the lever 330 and prevents the positioning pin 320 from disengaging from the through hole 110 due to accidental force, thereby enhancing the reliability of self-locking. The collinearity of the axis of the through hole 110 and the crossbar 210 ensures that there is no off-center load when the positioning pin 320 is engaged in the positioning hole 230, avoiding component wear caused by long-term use and extending service life.

[0034] The anti-slip component 340 includes a cover 341 disposed in the inner cavity of the groove 130. The inner cavity of the cover 341 is integrally formed with a protrusion 342. An annular cavity is formed between the inner wall surface of the cover 341 and the outer surface of the protrusion 342. The end of the lever 330 away from the positioning post 320 is inserted into the annular cavity. The annular cavity provides space for the lever 330 to move while preventing the lever 330 from sliding accidentally in the through groove 120 through the limiting effect of the cover 341 and the protrusion 342, ensuring that the positioning post 320 is always in a locked state.

[0035] The inner wall of the groove 130 is provided with an internal thread, and the outer surface of the cover 341 is provided with an external thread. The cover 341 is threadedly connected to the inner cavity of the groove 130 through the engagement of the external thread and the internal thread. The threaded connection enables the cover 341 to be detachably fixed, which is convenient for later maintenance or disassembly and assembly. At the same time, the self-locking characteristic of the thread engagement can prevent the cover 341 from loosening in the vibration environment, ensuring that the anti-detachment function is effective for a long time.

[0036] The clamp 222 has a relief groove 2221 that is compatible with the cover 341; this avoids structural interference between the clamp 222 and the cover 341, ensures that the clamp 222 can fit tightly against the surface of the column 100, and does not affect the installation and removal of the cover 341, thus improving the compatibility between components.

[0037] The connecting component 400 includes a base 410, a screw 420, and a clamping plate 430. The base 410 is fixedly connected to the bottom end of the column 100. The screw 420 is threaded through one side of the top of the base 410. The clamping plate 430 is slidably connected to the inner cavity of the base 410. The bottom end of the screw 420 is rotatably connected to the top of the clamping plate 430 through a bearing. A placement cavity for the stair steps is formed between the bottom of the clamping plate 430 and the bottom of the inner wall of the base 410. The height of the clamping plate 430 can be adjusted by the screw 420 so that the placement cavity can accommodate stair steps of different thicknesses, improving the versatility of the device. The clamping and fixing of the clamping plate 430 and the base 410 does not damage the stair structure, making it suitable for temporary protection scenarios. Moreover, the installation and disassembly are convenient and leave no construction traces.

[0038] The reinforcement component 500 includes an X-shaped frame 510, T-shaped protrusions 520, and supports 530. The X-shaped frame 510 is located between two vertically arranged crossbars 210. One T-shaped protrusion 520 is fixedly connected to each of the four ends of the X-shaped frame 510. One support 530 is fixedly connected to each end of the surface of the crossbar 210, corresponding to the T-shaped protrusions 520. The T-shaped protrusions 520 are slidably connected to the inner cavity of the corresponding support 530. The support 530 is located between two sleeves 221 on the crossbar 210. The X-shaped frame 510 forms a triangular stable structure, connecting the upper and lower crossbars 210 into an integral force-bearing system, significantly improving the guardrail's resistance to lateral impact. The sliding fit between the T-shaped protrusions 520 and the support 530 facilitates quick assembly, and the support 530 is located between the two sleeves 221, avoiding interference with the connecting parts 220 and optimizing the spatial layout.

[0039] Among them, the surface of the sleeve 220 is integrally formed with a limiting ring 2211, one side of which contacts the T-shaped protrusion 520 near the sleeve 220; the limiting ring 2211 restricts the sliding displacement of the T-shaped protrusion 520 in the support 530, preventing the X-shaped frame 510 from detaching from the crossbar 210 due to external impact, and ensuring that the reinforcement component 500 continues to function; at the same time, the limiting ring 2211 is integrally formed with the sleeve 221, which simplifies the structure and improves the limiting reliability.

[0040] The working principle of this utility model is as follows:

[0041] Installation and fixing: Place the base 410 at the bottom of the column 100 on the stair step, rotate the screw 420 to push the clamping plate 430 down, so that the clamping plate 430 and the bottom of the base 410 form a clamping force, and fix the column 100 to the edge of the stair.

[0042] The crossbar assembly 200 is connected to the reinforcing assembly 500; the T-shaped protrusions 520 at the four ends of the X-shaped frame 510 are slid into the supports 530 of the upper and lower crossbars 210 to form an X-shaped support; then the sleeve thread of the sleeve 220 is threaded onto the end of the crossbar 210, so that the limiting ring 2211 restricts the sliding of the T-shaped protrusions 520 and enhances the overall structural strength.

[0043] The crossbar assembly 200 is connected to the column 100: the positioning post 320 is pushed towards the center by the lever 330 in the groove 130, and the spring 310 is compressed to make the positioning post 320 retract into the through hole 110; the end of the crossbar 210 is aligned with the column 100, so that the clamp 222 fits against the surface of the column 100, the clearance groove 2221 is aligned with the groove 130, the lever 330 is released, the spring 310 returns to its original position and pushes the positioning post 320 into the positioning hole 230 of the crossbar 210 to achieve a self-locking connection;

[0044] Anti-detachment: The cover 341 is threaded into the groove 130, and its annular cavity restricts the displacement of the lever 330 to prevent the positioning post 320 from accidentally detaching;

[0045] Disassembly procedure: Rotate the cover 341 in the reverse direction to disengage it from the groove 130, and move the lever 330 to retract the positioning post 320, thus removing the crossbar assembly 200; rotate the sleeve 221 to disengage it from the end of the crossbar 210, move the crossbar 210, and the crossbar 210 will drive the support 530 to move, so that the support 530 is disengaged from the T-shaped protrusion 520, thus separating the crossbar assembly 200 from the reinforcing assembly 500; rotate the screw 420 to move the clamp 430 upward, and the column 100 can be removed from the stair steps, completing the overall disassembly.

[0046] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated staircase edge-locking protective railing, characterized in that, The system includes multiple uprights (100), with two vertically arranged crossbar assemblies (200) between two adjacent uprights (100). Each upright (100) has a self-locking assembly (300), and the crossbar assemblies (200) are connected to the uprights (100) via the self-locking assembly (300). A connecting assembly (400) is located at the bottom of each upright (100), and a reinforcing assembly (500) is located between the two vertically arranged crossbar assemblies (200). The column (100) has a through hole (110), one side of the inner cavity of the through hole (110) is connected to a through groove (120), and one side of the inner cavity of the through groove (120) is connected to a groove (130). The self-locking assembly (300) includes a spring (310), two positioning posts (320) and a lever (330). The spring (310) is located in the inner cavity of the through hole (110) and is fixedly connected between the two positioning posts (320). The positioning posts (320) are slidably connected to the inner cavity of the through hole (110), and one end extends through to the outside of the column (100) and engages with the end of the crossbar assembly (200). One end of the lever (330) is integrally formed with the positioning post (320), and the other end extends through the through groove (120) into the inner cavity of the groove (130).

2. The prefabricated staircase edge-locking protective railing according to claim 1, characterized in that: The crossbar assembly (200) includes a crossbar (210), two sleeves (220) and a positioning hole (230). The two sleeves (220) are respectively located at both ends of the crossbar (210). The positioning hole (230) is opened at the end of the crossbar (210), and the end of the positioning post (320) away from the spring (310) is engaged in the inner cavity of the corresponding positioning hole (230).

3. The prefabricated staircase edge-locking protective railing according to claim 2, characterized in that: The sleeve (220) includes a sleeve (221) and a clamp (222). The sleeve (221) is threaded onto the end of the crossbar (210), and the clamp (222) is fixedly connected to the end of the sleeve (221) facing the column (100) and is in contact with the surface of the column (100).

4. The prefabricated staircase edge-locking protective railing according to claim 3, characterized in that: The self-locking assembly (300) also includes an anti-detachment component (340) placed in a groove (130), wherein the groove (130) and the central axis of the through hole (110) are perpendicular to each other, and the central axis of the through hole (110) and the crossbar (210) are on the same straight line.

5. The prefabricated staircase edge-locking protective railing according to claim 4, characterized in that: The anti-detachment component (340) includes a cover (341) disposed in the inner cavity of the groove (130). The inner cavity of the cover (341) is integrally formed with a protrusion (342). An annular cavity is formed between the inner wall surface of the cover (341) and the outer surface of the protrusion (342). The end of the lever (330) away from the positioning post (320) is inserted into the annular cavity.

6. The prefabricated staircase edge-locking protective railing according to claim 5, characterized in that: The inner wall of the groove (130) is provided with an internal thread, and the outer surface of the cover (341) is provided with an external thread. The cover (341) is threadedly connected to the inner cavity of the groove (130) through the engagement of the external thread and the internal thread.

7. The prefabricated staircase edge-locking protective railing according to claim 5, characterized in that: The clamp (222) is provided with a relief groove (2221) that is compatible with the cover (341).

8. The prefabricated staircase edge-locking protective railing according to claim 1, characterized in that: The connecting assembly (400) includes a base (410), a screw (420), and a clamping plate (430). The base (410) is fixedly connected to the bottom end of the column (100). The screw (420) is threaded through one side of the top of the base (410). The clamping plate (430) is slidably connected to the inner cavity of the base (410). The bottom end of the screw (420) is rotatably connected to the top of the clamping plate (430). A stair step placement cavity is formed between the bottom of the clamping plate (430) and the bottom of the inner wall of the base (410).

9. The prefabricated staircase edge-locking protective railing according to claim 3, characterized in that: The reinforcement component (500) includes an X-shaped frame (510), a T-shaped protrusion (520), and a support (530). The X-shaped frame (510) is located between two horizontal bars (210) arranged vertically. The T-shaped protrusion (520) is fixedly connected to each of the four ends of the X-shaped frame (510). The support (530) is fixedly connected to each end of the surface of the horizontal bar (210) and is arranged corresponding to the T-shaped protrusion (520). The T-shaped protrusion (520) is slidably connected to the inner cavity of the corresponding support (530). The support (530) is located between two sleeves (221) on the horizontal bar (210).

10. The prefabricated staircase edge-locking protective railing according to claim 9, characterized in that: The surface of the socket (220) is integrally formed with a limiting ring (2211), one side of which contacts a T-shaped protrusion (520) near the socket (220).

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