Temporary protection device for horizontal opening of elevator shaft

Abstract

The utility model belongs to the technical field of building construction, and provides a temporary protection device aiming at the potential safety hazard that a simple protection net at a horizontal opening of an elevator shaft is insufficient in bearing and easy to slip under the simultaneous pouring process of wall columns, beams and slabs. The device is composed of a platform frame, a protective net, hanging rings and a supporting mechanism, the protective net and the hanging rings are arranged on the platform frame, and the bottom supporting mechanism is connected with a steel pipe main keel of an elevator shaft shear wall formwork supporting system; the supporting mechanism comprises a vertical supporting part and an inclined supporting part, the vertical supporting part is detachable, convenient to transport and install and adjustable in length to adapt to different construction environments, and the inclined supporting part forms a triangular structure through a long supporting pipe to enhance the bearing capacity. The two are matched to form a stable supporting system to disperse load; compared with the prior art, the device is high in bearing capacity and stability and capable of preventing personnel from falling off, the lifting rings are convenient to lift and install, and reliable safety protection is provided for construction workers.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically a temporary protective device for horizontal openings in elevator shafts. Background Technology

[0002] In the current field of building construction, the technique of simultaneously casting walls, columns, beams, and slabs is being widely used to improve the integrity and seismic performance of building structures. This integral casting method has significant advantages in shortening the construction period and improving construction efficiency, but it also places higher demands on all aspects of the construction process.

[0003] During the construction of the main structure, the challenge of protecting the area around the elevator shaft becomes apparent when the shear wall formwork is completed and the roof slab construction begins. According to construction safety regulations, effective protective measures must be taken for the horizontal openings of the elevator shaft to ensure the safety of construction workers. However, the common practice on construction sites at this stage is to place simple protective netting on top of the formwork around the elevator shaft. But because the formwork itself is thin and lacks strength and rigidity, the simple protective netting is insufficient in terms of load-bearing capacity and fails to meet safety standards. At the same time, the contact area between the simple protective netting and the formwork is too small, making it prone to slippage in actual use, thus posing a significant safety hazard on the construction site. There is an urgent need for a safer, more stable, and quickly installable protective device to solve this problem. Utility Model Content

[0004] The present invention aims to solve the above problems and thus provide a temporary protective device for horizontal openings in elevator shafts.

[0005] The technical solution adopted by this utility model to solve the aforementioned problem is:

[0006] A temporary protective device for a horizontal opening in an elevator shaft includes a platform frame connected by multiple horizontal and vertical bars. A protective net is installed on the upper surface of the platform frame, and lifting rings are provided at the four corners. A support mechanism is connected to the bottom of the platform frame, and the bottom end of the support mechanism is connected to the main steel pipe keel in the shear wall formwork support system of the elevator shaft.

[0007] Furthermore, the support mechanism includes a vertical support section and an inclined support section. The vertical support section is installed at the junction of the second horizontal bar on the upper and lower sides of the platform frame and the first vertical bar on the left and right sides. The inclined support section is installed at the junction of the second horizontal bar on the upper and lower sides of the platform frame and the second vertical bar on the left and right sides, and the two inclined support sections connected on the same horizontal bar are arranged symmetrically. This allows the support mechanism to form a stable support system at the bottom of the platform frame. The vertical support section and the inclined support section cooperate with each other to provide support force to the platform frame from different directions, distribute the load in all directions, enhance the overall stability and reliability of the protective device, and effectively ensure construction safety under various construction conditions.

[0008] Furthermore, the vertical support consists of a connecting seat, connecting bolts, a short support tube, an adjusting screw, and a channel plate. The connecting seat is fixedly connected to the platform frame, the short support tube is connected to the connecting seat via connecting bolts, the inner wall of the bottom end of the short support tube has internal threads, the adjusting screw is threadedly connected to the short support tube, and the side of the channel plate away from the opening direction is fixedly connected to the bottom end of the adjusting screw. The detachable connection type facilitates disassembly during transportation and storage, reduces space occupation, and allows construction personnel to quickly assemble on-site, improving installation efficiency.

[0009] Furthermore, the inclined support consists of a connecting seat, connecting bolts, a long support tube, an adjusting screw, and a channel plate. The connecting seat is fixedly connected to the platform frame, and the long support tube is connected to the connecting seat via connecting bolts. The inner wall of the bottom end of the long support tube has internal threads, and the adjusting screw is threadedly connected to the long support tube. The side of the channel plate away from the opening direction is fixedly connected to the bottom end of the adjusting screw. The long support tube is relatively long and inclined, forming a triangular support structure at the corner of the platform frame. Utilizing the good stability of the triangle, the load borne by the platform frame is evenly distributed and transferred to the keel, avoiding excessive local stress and effectively improving the load-bearing capacity of the protective device.

[0010] Compared with the prior art, the outstanding features of this utility model, which adopts the above technical solution, are:

[0011] This utility model combines a platform frame with a protective net to form a stable protective plane that can reliably bear various loads during construction. Compared to simple protective nets placed on thin formwork, which are prone to insufficient load-bearing capacity, its load-bearing capacity is significantly improved. The protective net can prevent people and objects from falling, ensuring the safety of construction workers. The lifting rings at the four corners of the platform frame facilitate the use of hoisting equipment to lift and install the protective device. The support mechanism at the bottom of the platform frame is connected to the main steel pipe keel in the elevator shaft shear wall formwork support system, forming a stable support system at the bottom of the platform frame. This changes the previous situation where the contact area between the simple protective net and the formwork was small and prone to slippage, making the protective device less likely to shift during construction and providing a safer and more reliable protective environment for construction workers. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main body of the present utility model in its usage state.

[0013] Figure 2 This is a top view of an embodiment of the present utility model.

[0014] Figure 3 This is an embodiment of the present utility model. Figure 2 Schematic diagram of the AA surface structure;

[0015] Figure 4 This is an embodiment of the present utility model. Figure 2 Schematic diagram of the mid-BB surface structure;

[0016] Figure 5 This is an embodiment of the present utility model. Figure 2 Schematic diagram of the C-plane structure;

[0017] The following are marked in the diagram: 1. Elevator shaft shear wall; 2. Top slab; 3. Steel pipe main keel; 4. Timber secondary keel; 5. Formwork; 6. Platform frame; 7. Vertical support; 8. Inclined support; 9. Connecting seat; 10. Short support pipe; 11. Long support pipe; 12. Adjusting screw; 13. Channel plate; 14. Connecting bolt; 15. Lifting ring; 16. Protective net. Detailed Implementation

[0018] The present invention will be further described below with reference to embodiments, the purpose of which is only to better understand the content of the present invention. Therefore, the examples given do not limit the scope of protection of the present invention.

[0019] Referring to Figures 1-5, a temporary protective device for a horizontal opening in an elevator shaft includes a platform frame 6 composed of multiple horizontal and vertical bars. The size of the platform frame 6 is adapted to the size of the horizontal opening in the elevator shaft to ensure that there is no obstruction above the top slab 2. A protective net 16 is installed on the upper surface of the platform frame 6, and lifting rings 15 are provided at the four corners. A support mechanism is connected to the bottom of the platform frame 6, and the bottom end of the support mechanism is connected to the main steel pipe keel 3 in the elevator shaft shear wall formwork support system. The elevator shaft shear wall formwork support system includes formwork 5 on both sides of the elevator shaft shear wall 1, wooden secondary keels 4 on the outside of the formwork 5, tie bolts penetrating the two formwork 5, and main steel pipe keels 3 on the upper and lower sides of the tie bolts.

[0020] The support mechanism includes a vertical support 7 and an inclined support 8. The vertical support 7 is installed at the junction of the second horizontal bar on the upper and lower sides and the first vertical bar on the left and right sides of the platform frame 6. The inclined support 8 is installed at the junction of the second horizontal bar on the upper and lower sides and the second vertical bar on the left and right sides of the platform frame 6, and the two inclined support 8 connected on the same horizontal bar are arranged symmetrically. This makes the support mechanism form a stable support system at the bottom of the platform frame 6. The vertical support 7 and the inclined support 8 cooperate with each other to provide support force to the platform frame 6 from different directions, distribute the load in all directions, enhance the overall stability and reliability of the protective device, and effectively ensure construction safety under various construction conditions.

[0021] The vertical support 7 consists of a connecting seat 9, connecting bolts 14, a short support tube 10, an adjusting screw 12, and a channel plate 13. The connecting seat 9 is fixedly connected to the platform frame 6, and the short support tube 10 is connected to the connecting seat 9 via the connecting bolts 14. This detachable connection facilitates disassembly during transportation and storage, reduces space occupation, and allows construction personnel to quickly assemble on-site, improving installation efficiency. The bottom inner wall of the short support tube 10 has internal threads, and the adjusting screw 12 is threadedly connected to the short support tube 10. The length of the support tube can be flexibly adjusted according to the actual position and height of the keel on the construction site, allowing the protective device to better adapt to different construction environments and ensuring installation accuracy. The side of the channel plate 13 away from the opening direction is fixedly connected to the bottom end of the adjusting screw 12. Its channel structure can tightly engage with the keel, increasing the contact area, improving friction, preventing the protective device from sliding up and down during use, further enhancing the stability of the protective device, and providing reliable safety for construction personnel.

[0022] The inclined support part 8 consists of a connecting seat 9, connecting bolts 14, a long support tube 11, an adjusting screw 12, and a channel plate 13. The connecting seat 9 is fixedly connected to the platform frame 6. The long support tube 11 is connected to the connecting seat 9 through the connecting bolts 14. The inner wall of the bottom end of the long support tube 11 is provided with internal threads. The adjusting screw 12 is threadedly connected to the long support tube 11. The side of the channel plate 13 away from the opening direction is fixedly connected to the bottom end of the adjusting screw 12. The functions of the connecting seat 9, connecting bolts 14, and channel plate 13 are similar to those of the vertical support part 7, realizing a stable connection and reliable keel engagement. The long support tube 11 is relatively long and inclined, forming a triangular support structure at the corner of the platform frame 6. Utilizing the good stability of the triangle, the load borne by the platform frame 6 is evenly distributed and transferred to the keel, avoiding excessive local stress and effectively improving the load-bearing capacity of the protective device.

[0023] This utility model combines a platform frame with a protective net to form a stable protective plane that can reliably bear various loads during construction. Compared to simple protective nets placed on thin formwork, which are prone to insufficient load-bearing capacity, its load-bearing capacity is significantly improved. The protective net prevents personnel and objects from falling, ensuring the safety of construction workers. The lifting rings at the four corners of the platform frame facilitate the use of hoisting equipment to lift and install the protective device. The support mechanism at the bottom of the platform frame is connected to the main steel keel in the elevator shaft shear wall formwork support system, forming a stable support system at the bottom of the platform frame. This changes the previous situation where the contact area between the simple protective net and the formwork was small and prone to slippage, making the protective device less likely to shift during construction and providing a safer and more reliable protective environment for construction workers.

[0024] The above description is only a preferred embodiment of the present utility model and does not limit the scope of the present utility model. All equivalent changes made based on the content of the present utility model specification and its drawings are included within the scope of the present utility model.

Claims

1. A temporary protection device for an elevator shaft horizontal opening, comprising a platform frame connected by a plurality of crossbars and longitudinal bars, characterized in that: The platform frame is equipped with a protective net on its upper surface, and lifting rings are set at the four corners. A support mechanism is connected to the bottom of the platform frame, and the bottom end of the support mechanism is connected to the main steel pipe keel in the elevator shaft shear wall formwork support system.

2. The elevator shaft horizontal opening temporary protection device according to claim 1, characterized in that: The support mechanism includes a vertical support and an inclined support. The vertical support is installed at the junction of the second horizontal bar on the upper and lower sides of the platform frame and the first vertical bar on the left and right sides. The inclined support is installed at the junction of the second horizontal bar on the upper and lower sides of the platform frame and the second vertical bar on the left and right sides, and the two inclined support parts connected on the same horizontal bar are arranged symmetrically.

3. The elevator shaft horizontal opening temporary protection device according to claim 2, characterized in that: The vertical support consists of a connecting seat, connecting bolts, a short support tube, an adjusting screw, and a channel plate. The connecting seat is fixedly connected to the platform frame, the short support tube is connected to the connecting seat through the connecting bolts, the inner wall of the bottom end of the short support tube is provided with internal threads, the adjusting screw is threadedly connected to the short support tube, and the side of the channel plate away from the opening direction is fixedly connected to the bottom end of the adjusting screw.

4. The elevator shaft horizontal opening temporary protection device of claim 2, wherein: The inclined support consists of a connecting seat, connecting bolts, a long support tube, an adjusting screw, and a channel plate. The connecting seat is fixedly connected to the platform frame, the long support tube is connected to the connecting seat through the connecting bolts, the inner wall of the bottom end of the long support tube is provided with internal threads, the adjusting screw is threadedly connected to the long support tube, and the side of the channel plate away from the opening direction is fixedly connected to the bottom end of the adjusting screw.

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