Formwork and safety protection device for elevator shaft construction
By combining internal and external formwork with a safety net structure, the safety protection problem of horizontal openings in aluminum formwork during elevator shaft construction was solved, achieving an efficient and safe construction process, reducing accidents and resource waste, and improving construction quality and environmental protection.
Patent Information
- Application Number
- CN202423034055.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-10
AI Technical Summary
In existing elevator shaft construction, the protection of horizontal openings in aluminum formwork is inadequate, leading to frequent accidents such as people falling from heights and objects falling on people. Traditional soft and hard protective measures are easy to fall off and difficult to dismantle, resulting in low safety.
The design adopts a combination of inner and outer templates. The safety net frame is fixed to the inner template assembly, and the steel bars are inserted into the slots and connected by anti-leakage cards and lock nuts. The ends of the safety net frame are embedded in the concrete layer. It is used in conjunction with aluminum templates to ensure that the safety net frame is not easy to fall off and is easy to disassemble.
It improved the safety of elevator shaft construction, reduced accidents, avoided damage to steel bars and grout leakage, reduced resource waste, protected the environment, and improved construction efficiency and quality.
Smart Images
Figure CN223548931U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevator shaft construction technology, specifically to a template and safety protection device for elevator shaft construction. Background Technology
[0002] With the iterative updates in construction technology, modern residential building construction is increasingly using aluminum formwork instead of traditional wooden formwork. However, due to inadequate protection at horizontal openings in aluminum formwork, incidents such as falls from heights or falling objects from these openings frequently occur during construction, posing significant safety hazards. Currently, in high-rise building construction, the commonly used horizontal safety protection measures for elevator shafts involve erecting a soft safety barrier every three floors and a hard safety barrier every six floors. This traditional approach uses large-mesh netting as soft protection and bamboo scaffolding as hard protection, resulting in poor protective effectiveness and a high risk of construction accidents. Soft protection is prone to detachment, leading to low safety, while hard protection is often installed only once at the elevator shaft opening, making disassembly difficult. Summary of the Invention
[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a template and safety protection device for elevator shaft construction, aiming to improve the protection effect and reduce construction accidents.
[0004] The technical solution adopted in this utility model is: a template and safety protection device for elevator shaft construction, including an outer template group, an inner template group and a safety net frame;
[0005] The inner template assembly is located inside the outer template assembly, and the tops of the two are flush.
[0006] The outer surface of the inner template group and the inner surface of the outer template group form an annular pouring cavity, and the pouring cavity contains a concrete layer.
[0007] The safety net frame is arranged horizontally and is connected to the inner formwork assembly on all four sides; the safety net frame covers the inner formwork assembly, and the edge of the safety net frame extends into the concrete layer of the pouring cavity.
[0008] According to the above scheme, the inner template group includes four vertically arranged first templates, which are opposite each other and connected in sequence; the top of the first templates is provided with multiple vertical slots; the safety net frame is engaged with the slots.
[0009] According to the above scheme, the safety net frame includes multiple reinforcing bars that are adapted to the slots. The multiple reinforcing bars are evenly distributed along the horizontal and vertical directions, and the horizontal reinforcing bars are perpendicularly and staggered with the vertical reinforcing bars; the reinforcing bars are inserted into the slots of the first template.
[0010] According to the above scheme, the slot is equipped with a leak-proof card; the leak-proof card includes a leak-proof part in the middle and flanges on both sides; the leak-proof part is adapted to the slot, and the two sides of the leak-proof part are respectively connected to the edges of the flanges, and the flanges are in contact with the inner surface of the first template; the lower end of the leak-proof part extends to the reinforcing bar of the slot.
[0011] According to the above scheme, threaded sections are provided on both sides of the reinforcing bar, and locking nuts are provided on the threaded sections; the threaded sections are inserted into the bottom of the slot, and the lower end of the leak-proof part is inserted between the locking nut and the inner surface of the inner template assembly.
[0012] According to the above scheme, the outer surface of the first template of the inner template group is brushed with a release agent.
[0013] According to the above scheme, the inner surface of the first template is provided with a first reinforcing rib, which is arranged at intervals along the horizontal and vertical sides of the first template.
[0014] According to the above scheme, the outer template group includes four vertically arranged second templates, which are connected in pairs to enclose each other; the inner surface of the second template is brushed with a release agent; the outer surface of the second template is provided with second reinforcing ribs, which are arranged at intervals along the horizontal and vertical sides of the second template.
[0015] According to the above scheme, both the first template and the second template are aluminum templates.
[0016] According to the above scheme, both ends of each steel bar are bent downwards and inwards to form a bend.
[0017] The beneficial effects of this utility model are as follows:
[0018] 1. This utility model features a combined design of a safety net frame and the inner and outer formwork of the elevator shaft. The safety net frame is fixed to the inner formwork assembly, and the ends of the safety net frame are embedded in the concrete layer of the pouring cavity. This design provides a safety barrier for the construction of horizontal openings in elevator shafts, effectively ensuring the safety of the elevator shaft construction process and reducing the occurrence of safety accidents during construction. Furthermore, the safety net frame is not easy to fall off, and can be cut and removed from the shaft after construction is completed, making disassembly convenient.
[0019] 2. In this utility model, the first template of the inner template group is reserved with a slot for connection with the reinforcing bar, which can avoid drilling holes on site, ensure the overall quality of the template, effectively avoid the impact of irregular template slots on construction quality, solve the problem of difficult pre-embedding of safety net frame, and ensure efficient construction and overall construction quality.
[0020] 3. In this utility model, the steel bars of the safety net frame are initially secured by being inserted into the slots of the first template, which prevents the steel bars from being damaged during installation and ensures the appearance quality after construction is completed. The design of the anti-leakage card prevents grout leakage during concrete pouring, avoids secondary construction and material waste, and also prevents grout leakage from polluting water and soil, thus playing a positive role in promoting environmental protection.
[0021] 4. In this utility model, the steel bars of the safety net frame are designed with threaded sections and cooperate with the locking nuts to achieve the connection with the inner formwork assembly. At the same time, the anti-leakage card is locked, which greatly improves the connection strength of the entire device and reduces the process of manual drilling, hole plugging and secondary concrete repair. The entire construction process is intuitive and highly operable, which can greatly shorten the construction time and effectively reduce the waste of resources. Attached Figure Description
[0022] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.
[0023] Figure 2 This is a side view illustrating the connection between the inner template assembly and the safety net frame in this embodiment.
[0024] Figure 3 This is a schematic diagram of the steel reinforcement connection between the first template and the safety net frame in this embodiment.
[0025] Figure 4 This is a schematic diagram of the arrangement of the slots on the first template in this embodiment.
[0026] Figure 5 This is a schematic diagram of the installation of the leak-proof card in this embodiment.
[0027] Figure 6 This is a schematic diagram of the locking mechanism of the leak-proof card in this embodiment.
[0028] Figure 7 This is a schematic diagram of the leak-proof card in this embodiment.
[0029] Figure 8 This is a schematic diagram of the steel reinforcement structure in this embodiment.
[0030] Figure 9 This is a schematic diagram of the template unit in this embodiment.
[0031] The components include: 1. Inner formwork assembly; 1.1 First formwork; 1.2 Slot; 1.3 First reinforcing bar; 2. Outer formwork assembly; 3. Safety net frame; 3.1 Reinforcing bar; 3.2 Elbow; 3.3 Threaded section; 4. Leak-proof card; 4.1 Leak-proof part; 4.2 Flange part; 5. Locking nut; 6. Concrete layer. Detailed Implementation
[0032] To better understand this utility model, it will be further described below with reference to the accompanying drawings and specific embodiments.
[0033] like Figure 1 and Figure 2 The template and safety protection device shown are for elevator shaft construction, including an outer template group 2, an inner template group 1 and a safety net frame 3;
[0034] The inner template group 1 is located inside the outer template group 2, and the tops of the two are flush.
[0035] An annular pouring cavity 6 is formed between the outer surface of the inner template group 1 and the inner surface of the outer template group 2, and the pouring cavity 6 contains a concrete layer.
[0036] The safety net frame 3 is arranged horizontally and is connected to the inner formwork group 1 on all four sides; the safety net frame 3 covers the inner formwork group 1, and the edge of the safety net frame 3 extends into the concrete layer of the pouring cavity 6.
[0037] In this invention, concrete is poured into the pouring cavity 6 to form a concrete layer; the four sides of the safety net frame 3 extend into the concrete layer to achieve the pre-embedded fixation of the safety net frame 3, which can effectively prevent the safety net frame 3 from falling off.
[0038] In this invention, the cross-sections of the outer template group 2 and the inner template group 1 are both square, which is compatible with the elevator shaft structure; correspondingly, the casting cavity 6 is also square and annular.
[0039] Preferably, such as Figures 3-6 As shown, the inner template group 1 includes four vertically arranged first templates 1.1, which are opposite each other and connected in sequence; the top of the first template 1.1 is provided with multiple vertical slots 1.2; the safety net frame 3 is engaged with the slots 1.2.
[0040] In this utility model, the safety net frame 3 includes multiple steel bars 3.1 that are adapted to the slot 1.2. The multiple steel bars 3.1 are evenly distributed along the transverse and longitudinal directions, and the transverse steel bars 3.1 and the longitudinal steel bars 3.1 are perpendicularly and intersectingly connected; the steel bars 3.1 are inserted into the slot 1.2 of the first template 1.1.
[0041] In this utility model, both ends of each reinforcing bar 3.1 are bent downwards and inwards to form bends 3.2, such as... Figure 8 As shown.
[0042] Preferably, the card slot 1.2 is equipped with a leak-proof card 4; such as Figure 5 and Figure 7As shown, the leak-proof card 4 includes a leak-proof part 4.1 in the middle and flange parts 4.2 on both sides; the leak-proof part 4.1 is adapted to the slot 1.2, and the top of the leak-proof part 4.1 is flush with the top of the first template 1.1; the two sides of the leak-proof part 4.1 are respectively connected to the edges of the flange parts 4.2, and the flange parts 4.2 are attached to the inner surface of the first template 1.1; the lower end of the leak-proof part 4.1 extends to the reinforcing bar 3.1 of the slot 1.2.
[0043] Preferably, the reinforcing bar 3.1 is provided with a threaded section 3.3, and a locking nut 5 is provided on the threaded section 3.3; the threaded section 3.3 is adapted to the slot 1.2 (fitting into the bottom of the slot 1.2), and the lower end of the leak-proof part 4.1 is fitted between the locking nut 5 and the inner surface of the inner template group 1, so that the reinforcing bar 3.1 is fixed and the leak-proof card 4 is locked by the locking nut 5.
[0044] In this utility model, both the inner template group 1 and the outer template group 2 are square structures, which are adapted to the size of the elevator shaft; the outer surface of the first template 1.1 of the inner template group 1 is brushed with a release agent; the inner surface of the first template 1.1 is provided with a first reinforcing rib 1.3, which is arranged at intervals along the horizontal and vertical directions of the first template 1.1; the slot 1.2 is opened at the top of the first template 1.1, and the number of slots 1.2 is adapted to the number of steel bars 3.1 in the safety net frame 3 in that direction.
[0045] Preferably, the outer template group 2 includes four vertically arranged second templates, which are connected in pairs to enclose each other; the inner surface of the second template is brushed with a release agent; and the outer surface of the second template is provided with second reinforcing ribs, which are arranged at intervals along the horizontal and vertical sides of the second template.
[0046] In this utility model, both the first template 1.1 and the second template are aluminum templates.
[0047] Example
[0048] like Figure 1The diagram shows a formwork and safety protection device for elevator shaft construction, comprising an outer formwork assembly 2, an inner formwork assembly 1, and a safety net frame 3. The outer formwork assembly 2 and the inner formwork assembly 1 have square cross-sections, with the inner formwork assembly 1 located inside the outer formwork assembly 2. The outer formwork assembly 2 is formed by four first formwork panels 1.1 vertically connected in sequence, and the inner formwork assembly 1 is formed by four second formwork panels vertically connected in sequence. An annular pouring cavity 6 is formed between the inner formwork assembly 1 and the outer formwork assembly 2, into which a concrete layer (for the elevator shaft structure) is poured. The reinforcing bars 3.1 of the safety net frame 3 are secured in slots 1.2 at the top of the first formwork panel 1.1 and locked with locking nuts 5. The slots 1.2 are equipped with anti-leakage clips 4, which are secured with locking nuts 5. The reinforcing bars 3.1 of the safety net frame 3 have elbows 3.2 at both ends, which are embedded in the concrete layer. The first formwork panel 1.1 adopts the following... Figure 9 The template units shown are assembled sequentially. Each template unit has two slots 1.2 at the top. The two slots 1.2 are located at 1 / 3 of the width direction. The length of each slot 1.2 is 150mm. The anchorage length of the steel bar 3.1 of the safety net frame 3 (the length of the steel bar 3.1 embedded in the concrete layer) meets the requirements of the standard.
[0049] The construction process of this embodiment includes the prefabrication of the inner formwork assembly 1, safety net frame 3, and leak-proof cards 4 in the factory in the early stage. After the outer formwork assembly 2 is installed on site, the inner formwork assembly 1 is installed, then the safety net frame 3 is fixed, and the leak-proof cards 4 are set. Locking nuts 5 are used to fix the safety net frame 3 and tighten the leak-proof cards 4. Then, concrete is poured between the inner formwork assembly 1 and the outer formwork assembly 2. After the concrete reaches the set strength, the inner formwork assembly 1 and the leak-proof cards 4 are removed in sequence according to the order of "install first, then remove; last installed, first removed", thus completing the construction of the safety net frame 3. The safety net frame 3 is set every three layers. The specific construction process is as follows:
[0050] 1. Component fabrication: The steel bars 3.1 of the safety net frame 3 are A6 plain round steel bars 3.1, and each end of the steel bar 3.1 is provided with a threaded section 3.3 (the threaded section 3.3 is inserted into the vertical groove); the first template 1.1 of the inner template group 1 and the second template of the outer template group 2 are both aluminum templates. The first template 1.1 of the inner template group 1 is based on the existing aluminum template with a slot 1.2. The size of the slot 1.2 is adapted to the steel bars 3.1 of the safety net frame 3; the leak-proof card 4 is made according to the size of the slot 1.2 of the inner template group 1. After confirming the size, it is prefabricated in the factory.
[0051] 2. Template installation: After the outer template group 2 is installed, the inner template group 1 is installed in the elevator shaft area. The installation method is the same as that of the outer template group 2. After installation, reinforcement is carried out. In this embodiment, the installation of the inner template group 1 and the outer template group 2 can be carried out using existing construction methods.
[0052] 3. Safety net frame 3 pre-embedded: After the inner formwork group 1 is installed and reinforced, the prefabricated safety net frame 3 is placed on top of the inner formwork group 1, so that the steel bars 3.1 of the safety net frame 3 correspond to the positions of the slots 1.2 on the upper part of the inner formwork group 1. Press the safety net frame 3 down so that the steel bars 3.1 of the safety net frame 3 are locked at the bottom of the slots 1.2.
[0053] 4. Fixing the leak-proof card 4: The slot 1.2 of the inner formwork group 1 is fixed with the leak-proof card 4. The outer side of the leak-proof part 4.1 of the leak-proof card 4 (that is, the side close to the pouring cavity 6) is coated with a release agent. The lower end of the leak-proof part 4.1 extends to the steel bar 3.1 of the safety net frame 3. The two flanges 4.2 of the leak-proof card 4 are attached to the inner surface of the inner formwork group 1.
[0054] 5. Overall reinforcement: After the leak-proof card 4 is installed, the safety net frame 3 is reinforced with locking nuts 5 (the locking nuts 5 are compatible with the threaded section 3.3 of the safety net frame 3). At the same time, the locking nuts 5 are used to clamp and fix the leak-proof card 4 to ensure the integrity of the concrete pouring process.
[0055] 6. Concrete pouring: Pour a layer of concrete into the pouring cavity 6 formed by the inner formwork group 1 and the outer formwork group 2; during the concrete pouring process, check the positioning of the inner formwork group 1 and the safety net frame 3 from time to time, and adjust any loose parts in time to ensure the overall quality of the safety net frame 3.
[0056] 7. Overall dismantling: After the concrete reaches the set strength, the inner formwork group 1, the outer formwork group 2 and the leak-proof card 4 are dismantled as a whole, while the safety net frame 3 is retained, and the overall construction is completed.
[0057] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0058] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A formwork and safety protection device for elevator shaft construction, characterized in that, Includes outer formwork assembly, inner formwork assembly, and safety net frame; The inner template assembly is located inside the outer template assembly, and the tops of the two are flush. The outer surface of the inner template group and the inner surface of the outer template group form an annular pouring cavity, and the pouring cavity contains a concrete layer. The safety net frame is arranged horizontally and is connected to the inner formwork assembly on all four sides; the edges of the safety net frame extend into the concrete layer of the pouring cavity.
2. The template and safety protection device as described in claim 1, characterized in that, The inner template group includes four vertically arranged first templates, which are opposite each other and connected in sequence; the top of the first templates is provided with multiple vertical slots; the safety net frame is engaged with the slots.
3. The template and safety protection device as described in claim 2, characterized in that, The safety net frame includes multiple reinforcing bars that fit the slots. The reinforcing bars are evenly spaced along the horizontal and vertical directions, and the horizontal reinforcing bars are perpendicularly intersecting with the vertical reinforcing bars.
4. The template and safety protection device as described in claim 3, characterized in that, The slot is equipped with a leak-proof card; the leak-proof card includes a leak-proof part in the middle and flanges on both sides; the leak-proof part is adapted to the slot, and the two sides of the leak-proof part are respectively connected to the edges of the flanges, and the flanges are in contact with the inner surface of the first template; the lower end of the leak-proof part extends to the reinforcing bar of the slot.
5. The template and safety protection device as described in claim 4, characterized in that, The reinforcing bar is provided with a threaded section, and a locking nut is provided on the threaded section; the threaded section is inserted into the bottom of the groove, and the lower end of the leak-proof part is inserted between the locking nut and the inner surface of the inner template assembly.
6. The template and safety protection device as described in any one of claims 2 to 5, characterized in that, The outer surface of the first template of the inner template group is brushed with a release agent.
7. The template and safety protection device as described in claim 6, characterized in that, The inner surface of the first template is provided with a first reinforcing rib, which is arranged at intervals along the horizontal and vertical sides of the first template.
8. The template and safety protection device as described in claim 7, characterized in that, The outer template group includes four vertically arranged second templates, which are connected in pairs to enclose each other; the inner surface of the second template is brushed with a release agent; the outer surface of the second template is provided with second reinforcing ribs, which are arranged at intervals along the horizontal and vertical sides of the second template.
9. The template and safety protection device as described in claim 8, characterized in that, Both the first template and the second template are aluminum templates.
10. The template and safety protection device as described in claim 3, characterized in that, Both ends of each reinforcing bar are bent downwards and inwards to form bends.