A convenient elevator shaft guardrail without nails

Abstract

The utility model provides a kind of free to sell nail convenient type elevator shaft guardrail, including guardrail, and the longitudinal mid-axis of guardrail is provided with several shaft inner wall limiting components, including the base of the longitudinal mid-axis of guardrail, the one end of base away from guardrail is provided with a U type metal clamping groove, first telescopic rod group can be rotatably arranged in U type metal clamping groove, first telescopic rod group is used to top pressure elevator shaft inner side wall;Several wellhead wall limiting components are set to the lateral two end side walls of guardrail, including the arc steel sheet buckle of several groups of symmetric setting being set to the lateral two sides of guardrail, second telescopic rod group is provided in arc steel sheet buckle, and second telescopic rod group is used to top pressure elevator wellhead side wall.It is top pressure elevator shaft inner side wall by shaft inner wall limiting component, then it is top pressure elevator wellhead side wall by wellhead wall limiting component, form bidirectional mechanical self-locking structure, need not be drilled on structural wall and be fixed, completely avoid the damage to concrete wall body.

Description

Technical Field

[0001] This utility model relates to a convenient elevator shaft guardrail that does not require pins. Background Technology

[0002] With the rapid development of my country's economy and urban construction, and the continuous improvement of people's living standards, residential communities are springing up everywhere. Modern residential buildings are generally around 90 meters high. Edge protection at elevator shaft openings is a necessary measure to ensure the safety of construction workers. Traditional guardrails are fixed to the structural wall with pins. When secondary structural construction is carried out at the elevator shaft opening, the guardrails inevitably need to be removed to facilitate masonry construction. Using pins for fixing not only causes certain damage to the structure but also increases the workload for laborers to dismantle and install guardrails. Therefore, this invention addresses the problems of cumbersome dismantling and installation of guardrails and damage to the structure by designing a pin-free, convenient elevator shaft guardrail. This allows for quick installation of elevator shaft opening guardrails without pins, saving installation and dismantling time and protecting the structure from damage. Utility Model Content

[0003] This invention provides a convenient elevator shaft safety railing that requires no pins, which can effectively solve the above-mentioned problems.

[0004] This utility model is implemented as follows:

[0005] A pin-free, portable elevator shaft safety railing includes:

[0006] guardrails, and

[0007] Several well wall limiting components are set at the longitudinal central axis of the guardrail, including a base set at the longitudinal central axis of the guardrail. A U-shaped metal slot is provided at the end of the base away from the guardrail. A first telescopic rod group is rotatably set in the U-shaped metal slot. The first telescopic rod group is used to press against the inner side wall of the elevator shaft.

[0008] Several wellhead wall limiting components are installed on the horizontal side walls of the guardrail, including several sets of symmetrically arranged arc-shaped steel plate buckles on both sides of the guardrail. A second telescopic rod group is installed inside the arc-shaped steel plate buckle, and the second telescopic rod group is used to press against the side wall of the elevator wellhead.

[0009] As a further improvement, the number of the well wall limiting components is 2 to 3 sets, and the 2 to 3 sets of well wall limiting components are arranged longitudinally at equal intervals on the fixed rod at the central axis of the guardrail.

[0010] As a further improvement, the first telescopic rod assembly includes a first telescopic rod connected to a U-shaped metal slot and a second telescopic rod that can be slidably sleeved within the first telescopic rod.

[0011] As a further improvement, the U-shaped metal slot and the first telescopic rod assembly are fixed by a pin.

[0012] As a further improvement, the U-shaped metal slot and the first telescopic rod assembly are fixed by a limiting component. The limiting component includes a limiting rod, which comprises a round rod portion and a square rod portion. A toothed fixing portion is provided between the round rod portion and the square rod portion. A pin is provided on the square rod portion. The first telescopic rod is disposed in the U-shaped metal slot, with a first receiving groove on one side wall and a second receiving groove on the other end. A connecting hole is provided between the first receiving groove and the second receiving groove, and the connecting hole is close to the first receiving groove. One end of the bottom wall is provided with a toothed meshing part corresponding to the toothed fixing part. Above the U-shaped metal slot is a circular hole that penetrates the side wall of the base and corresponds to the round rod part. Below the U-shaped metal slot is a square hole that penetrates the side wall of the base and corresponds to the square rod part. When the limiting rod passes through the circular hole and the connecting hole in sequence, the square rod part is fitted with a limiting spring that is accommodated in the second accommodating groove. A pin is installed at the bottom of the limiting rod so that the spring is located between the bottom wall of the second accommodating groove and the pin, and then the square rod part is positioned in the square hole.

[0013] As a further improvement, a handle is provided above the limiting rod.

[0014] As a further improvement, the number of wellhead wall limiting components is 4 to 6 sets, and the 4 to 6 sets of wellhead wall limiting components are symmetrically arranged in pairs on the horizontal side walls of the guardrail.

[0015] As a further improvement, the second telescopic rod assembly includes a third telescopic rod that is snapped into the arc-shaped steel plate, and a fourth telescopic rod that is slidably fitted into the third telescopic rod.

[0016] As a further improvement, a rubber stopper is provided at the end of both the second and fourth telescopic rods.

[0017] The beneficial effects of this utility model are: when installing elevator shaft guardrails, the inner wall of the elevator shaft is first pressed against the inner side wall by the inner wall limiting component, and then the side wall of the elevator shaft opening is pressed against the opening by the opening wall limiting component, forming a two-way mechanical self-locking structure. There is no need to drill holes in the structural wall for fixing, thus completely avoiding damage to the concrete wall. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0019] Figure 1This is a three-dimensional structural diagram of the convenient, pin-free elevator shaft guardrail of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the inner wall limiting component of the convenient, pin-free elevator shaft guardrail of this utility model.

[0021] Figure 3 This is an exploded structural diagram of the limiting component of the pinless portable elevator shaft guardrail of this utility model.

[0022] Figure 4 This is a cross-sectional structural diagram of the limiting component of the pinless portable elevator shaft guardrail of this utility model.

[0023] The accompanying diagrams are labeled as follows:

[0024] 10. Guardrails;

[0025] 20. Well inner wall limiting assembly; 21. Base; 211. U-shaped metal slot; 2111. First receiving slot; 2112. Second receiving slot; 2113. Connecting hole; 2114. Toothed meshing part; 2115. Round hole; 2116. Square hole; 22. First telescopic rod assembly; 221. First telescopic rod; 222. Second telescopic rod; 23. Limiting assembly; 231. Limiting rod; 2311. Round rod part; 2312. Square rod part; 2313. Toothed fixing part; 2314. Pin; 2315. Limiting spring; 2316. Handle;

[0026] 30. Wellhead wall limiting assembly; 31. Arc-shaped steel plate buckle; 32. Second telescopic rod assembly; 321. Third telescopic rod; 322. Fourth telescopic rod; 33. Rubber plug. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0028] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Reference Figure 1 As shown, a pinless, portable elevator shaft guardrail 10 includes a guardrail 10 and several shaft inner wall limiting components 20 disposed at the longitudinal central axis of the guardrail 10. The guardrail includes a base 21 disposed at the longitudinal central axis of the guardrail 10. A U-shaped metal slot 211 is provided at the end of the base 21 away from the guardrail 10. A first telescopic rod group 22 is rotatably disposed within the U-shaped metal slot 211. The first telescopic rod group 22 is used to press against the inner wall of the elevator shaft. The rotatable first telescopic rod group 22 facilitates adjustment of its position and provides pressure.

[0030] It also includes several wellhead wall limiting components 30 set on the side walls at both ends of the guardrail 10 in the horizontal direction, including several sets of symmetrically arranged arc-shaped steel plate buckles 31 set on both sides of the guardrail 10 in the horizontal direction. The arc-shaped steel plate buckles 31 are provided with a second telescopic rod group 32, which is used to press against the side wall of the elevator wellhead.

[0031] The number of the well wall limiting components 20 is 2 to 3 sets, and the 2 to 3 sets of well wall limiting components 20 are arranged longitudinally at equal intervals on the fixed rod at the central axis of the guardrail 10. In this embodiment, the number of the well wall limiting components 20 is 2 sets. The 2 sets of longitudinally equidistant well wall limiting components 20 form a multi-point support, which disperses the force on the guardrail and avoids the risk of overturning caused by single-point overload.

[0032] Reference Figure 2 As shown, in this embodiment, the first telescopic rod assembly 22 includes a first telescopic rod 221 connected to a U-shaped metal slot 211 and a second telescopic rod 222 slidably sleeved within the first telescopic rod 221. The sleeved structure of the first telescopic rod 221 and the second telescopic rod 222 ensures both adjustment accuracy and redundant load-bearing capacity, ensuring no deformation under extreme loads.

[0033] In one embodiment, the U-shaped metal slot 211 and the first telescopic rod assembly 22 are fixed by a pin.

[0034] Reference Figures 3-4As shown, in another embodiment, the U-shaped metal slot 211 and the first telescopic rod assembly 22 are fixed by a limiting component 23. The limiting component 23 includes a limiting rod 231, which includes a round rod portion 2311 and a square rod portion 2312. A toothed fixing portion 2313 is provided between the round rod portion 2311 and the square rod portion 2312. A pin 2314 is provided on the square rod portion 2312. The first telescopic rod 221 is disposed in the U-shaped metal slot 211. One end of its sidewall is provided with a first receiving groove 2111, and the other end is provided with a second receiving groove 2112. A connecting hole 2113 is provided between the first receiving groove 2111 and the second receiving groove 2112. The connecting hole 2113 is close to the first receiving groove 2111. One end of the bottom wall is provided with a toothed engagement part 2114 corresponding to the toothed fixing part 2313. Above the U-shaped metal slot 211, there is a circular hole 2115 that penetrates the side wall of the base 21 and corresponds to the round rod part 2311. Below the U-shaped metal slot 211, there is a square hole 2116 that penetrates the side wall of the base 21 and corresponds to the square rod part 2312. When the limiting rod 231 passes through the circular hole 2115 and the connecting hole 2113 in sequence, the square rod part 2312 is fitted with a limiting spring 2315 that is accommodated in the second accommodating groove 2112. A pin 2314 is installed on the bottom of the limiting rod 231, so that the spring is located between the bottom wall of the second accommodating groove 2112 and the pin 2314, and then the square rod part 2312 is located in the square hole 2116. During use, simply lifting the limiting rod 231 adjusts the rotation of the first telescopic rod assembly 22. Releasing the limiting rod 231 causes it to quickly fall under the action of the limiting spring 2315, allowing the toothed fixing part 2313 to engage with the toothed meshing part 2114, thus completing the fixation. Compared to a pin, this structure provides better fastening. The limiting spring 2315 continuously provides downward pressure, ensuring the toothed structure remains tightly engaged and preventing movement of the first limiting rod assembly 22 due to a loose pin. Furthermore, the toothed fixing part 2313 provides a limiting condition perpendicular to the width direction of the guardrail 10, further increasing the reliability of the fixation. A handle 2316 is provided above the limiting rod 231 to facilitate lifting the limiting rod 231.

[0035] Reference Figure 1 As shown, the number of wellhead wall limiting components 30 is 4 to 6 sets, and the 4 to 6 sets of wellhead wall limiting components 30 are symmetrically arranged in pairs on the transverse side walls of the guardrail 10. The second telescopic rod group 32 includes a third telescopic rod 321 disposed within the arc-shaped steel plate buckle 31, and a fourth telescopic rod 322 slidably sleeved within the third telescopic rod 321. In this embodiment, the number of wellhead wall limiting components 30 is 4 sets, symmetrically arranged in pairs on the transverse side walls of the guardrail 10.

[0036] Both the second telescopic rod 222 and the fourth telescopic rod 322 are equipped with a rubber plug 33 at their ends. On the one hand, the rubber has a high coefficient of friction with concrete, which prevents the telescopic rod from slipping. On the other hand, the rubber plug 33 can buffer the top pressure and prevent the steel pipe from scratching the plaster layer of the wall.

[0037] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A pin-free, portable elevator shaft safety railing, characterized in that, include: Guardrail (10), and Several well wall limiting components (20) are set at the longitudinal central axis of the guardrail (10), including a base (21) set at the longitudinal central axis of the guardrail (10). A U-shaped metal slot (211) is provided at the end of the base (21) away from the guardrail (10). A first telescopic rod group (22) is rotatably arranged in the U-shaped metal slot (211). The first telescopic rod group (22) is used to press against the inner wall of the elevator shaft. Several wellhead wall limiting components (30) are set on the side walls of the two horizontal ends of the guardrail (10), including several sets of symmetrically arranged arc-shaped steel plate buckles (31) on both sides of the guardrail (10). The arc-shaped steel plate buckles (31) are provided with a second telescopic rod group (32), which is used to press against the side wall of the elevator wellhead.

2. The pinless portable elevator shaft guardrail according to claim 1, characterized in that, The number of the well inner wall limiting components (20) is 2 to 3 sets, and the 2 to 3 sets of well inner wall limiting components (20) are arranged longitudinally at equal intervals on the fixed rod at the central axis of the guardrail (10).

3. The pinless portable elevator shaft guardrail according to claim 2, characterized in that, The first telescopic rod assembly (22) includes a first telescopic rod (221) connected to a U-shaped metal slot (211) and a second telescopic rod (222) slidably sleeved within the first telescopic rod (221).

4. A pinless, portable elevator shaft guardrail according to claim 3, characterized in that, The U-shaped metal slot (211) and the first telescopic rod assembly (22) are fixed by a pin.

5. A pinless, portable elevator shaft guardrail according to claim 2, characterized in that, The U-shaped metal slot (211) and the first telescopic rod assembly (22) are fixed by a limiting component (23). The limiting component (23) includes a limiting rod (231), which includes a round rod portion (2311) and a square rod portion (2312). A toothed fixing portion (2313) is provided between the round rod portion (2311) and the square rod portion (2312). A pin (2314) is provided on the square rod portion (2312). The first telescopic rod (221) is located in the U-shaped metal slot (211). One end of the side wall is provided with a first receiving groove (2111), and the other end is provided with a second receiving groove (2112). A connecting hole (2113) is provided between the first receiving groove (2111) and the second receiving groove (2112). The connecting hole (2113) is located near the bottom wall of the first receiving groove (2111). There is a toothed engagement part (2114) corresponding to the toothed fixing part (2313). A circular hole (2115) corresponding to the round rod part (2311) is provided above the U-shaped metal slot (211) and penetrates the side wall of the base (21). A square hole (2116) corresponding to the square rod part (2312) is provided below the U-shaped metal slot (211) and penetrates the side wall of the base (21). When the limiting rod (231) is sequentially When passing through the circular hole (2115) and the connecting hole (2113), the square rod part (2312) is fitted with a limiting spring (2315) that is accommodated in the second accommodating groove (2112). A pin (2314) is installed on the bottom of the limiting rod (231), so that the spring is located between the bottom wall of the second accommodating groove (2112) and the pin (2314), and then the square rod part (2312) is located in the square hole (2116).

6. A pinless, portable elevator shaft guardrail according to claim 5, characterized in that, A handle (2316) is provided above the limiting rod (231).

7. A pin-free, portable elevator shaft guardrail according to claim 3, characterized in that, The number of wellhead wall limiting components (30) is 4 to 6 sets, and the 4 to 6 sets of wellhead wall limiting components (30) are symmetrically arranged in pairs on the horizontal side walls of the guardrail (10).

8. A pinless, portable elevator shaft guardrail according to claim 7, characterized in that, The second telescopic rod assembly (32) includes a third telescopic rod (321) disposed within the arc-shaped steel plate buckle (31), and a fourth telescopic rod (322) slidably sleeved within the third telescopic rod (321).

9. A pin-free, portable elevator shaft guardrail according to claim 8, characterized in that, A rubber plug (33) is provided at the end of both the second telescopic rod (222) and the fourth telescopic rod (322).

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