Safe anti-falling device for house building construction

Abstract

The utility model provides a safety anti-falling device for house building construction, which comprises a supporting seat, a piston buffer piece and a protective frame, the piston buffer piece and the protective frame are respectively positioned on two sides of the supporting seat, the bottom end of the protective frame is rotatably connected with the bottom end of the supporting seat, and the top end of the protective frame is connected with the piston buffer piece through a traction cable penetrating through the top end of the supporting seat. The multiple sets of mounting ropes are located on the inner side of the protection frame, and the two sides of each set of mounting ropes are connected with protection net pieces respectively. According to the utility model, a plurality of groups of protective net sheets are spliced to form the large protective net, and when the large protective net is damaged by a falling object during construction, only the damaged protective net sheet is replaced, so that the cost can be saved; when a falling object impacts the protective net piece, the piston buffering piece can reduce impact force borne by the protective frame and the protective net piece, the protective frame and the protective net piece are protected, the situation that the protective frame and the protective net piece are cracked and damaged when subjected to large impact and cannot effectively bear the falling object from high altitudes is prevented, and the service life of the protective net piece is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to a safety fall prevention device for building construction. Background Technology

[0002] During building construction, there is a risk of falls (person or object) from heights. Therefore, it is necessary to install safety fall protection nets around the construction site to protect construction workers and prevent serious accidents. Currently, most existing safety fall protection devices are based on steel poles with nylon nets suspended or stretched on them to catch falling people or objects. However, these existing devices have some functional shortcomings in practical use, mainly in the following aspects:

[0003] (1) The installation and replacement of nylon netting is inconvenient: Existing nylon netting is usually supported by the whole netting, and its binding process is relatively complicated. Once a part is damaged, the whole netting needs to be replaced, which not only increases the maintenance cost, but also reduces the construction efficiency.

[0004] (2) Insufficient buffering performance: When falling objects impact the safety net, the existing devices lack an effective buffering mechanism and cannot effectively reduce the impact force, which may lead to damage to the safety net and support structure, or even fail to fully protect the safety of falling personnel. Utility Model Content

[0005] The purpose of this utility model is to provide a safety fall arrest device for building construction, so as to solve the problems mentioned above.

[0006] The technical solution adopted by this utility model is: a safety fall arrest device for building construction, comprising:

[0007] Support base;

[0008] Piston buffers and protective frames are located on both sides of the support base, with the bottom end of the protective frame rotatably connected to the bottom end of the support base, and the top end of the protective frame connected to the piston buffers via a traction cable passing through the top end of the support base.

[0009] Several sets of installation ropes are located inside the protective frame, and each set of installation ropes has a protective net connected to both sides.

[0010] Furthermore, the support base includes:

[0011] Support column;

[0012] The first support is located at the top of the support column and has a rope hole and a fixed pulley thereon, the rope hole and the fixed pulley being used to install the traction cable;

[0013] The second support is located at the bottom of the support column and has a hinge seat mounted thereon, which is hinged to the bottom end of the protective frame.

[0014] Furthermore, the first support includes a first fixing plate and a first fixing sleeve. The bottom end of the first fixing sleeve is fitted onto the support column, the top end is connected to the first fixing plate, and a transverse tube passes through the middle. The fixed pulley includes a first fixed pulley located at the top of the first fixing plate, a second fixed pulley located at the bottom of the first fixing plate, and a third fixed pulley. The second fixed pulley and the third fixed pulley are respectively located on both sides of the transverse tube.

[0015] The second support includes a second fixing plate and a second fixing sleeve. The top end of the second fixing sleeve is fitted onto the support column, and the bottom end is connected to the second fixing plate.

[0016] Furthermore, the piston buffer includes a piston cylinder, a piston rod, and a buffer spring. The piston rod is movably disposed in the piston cylinder, with its top end extending out of the piston cylinder and connected to the traction cable, and its bottom end having a piston head located inside the piston cylinder. The piston head slides against the inner sidewall of the piston cylinder. The buffer spring is sleeved on the outside of the piston rod, with its two ends abutting against the inner top wall of the piston cylinder and the piston head, respectively.

[0017] Furthermore, the protective frame includes a first mounting rod, a second mounting rod, and two sets of sleeves. The first mounting rod and the second mounting rod are arranged in parallel, and their bottom ends are respectively hinged to the support base. The two sets of sleeves are respectively sleeved on the first mounting rod and the second mounting rod, and the two ends of the mounting rope are respectively connected to the two sets of sleeves.

[0018] Furthermore, the sleeve includes several coaxially distributed base sleeves, with the ends of adjacent base sleeves abutting each other.

[0019] Furthermore, the top ends of the first mounting rod and the second mounting rod are respectively provided with rope loops, and the bottom ends are respectively provided with limiting ring plates. The rope loops are used to connect the traction rope, and the outer diameter of the limiting ring plate is larger than the inner diameter of the sleeve.

[0020] Furthermore, the installation rope is fitted with several C-shaped buckles, and each end of the C-shaped buckle is provided with a connecting lug. The two sets of connecting lugs are locked together by connecting bolts passing through them.

[0021] Furthermore, the outer wall of the sleeve is covered with a flexible protective layer, and the outer wall of the C-shaped buckle is covered with a flexible wear-resistant layer.

[0022] The beneficial effects of this utility model are as follows: multiple sets of protective netting panels are spliced ​​together to form a large protective net. When construction debris damages the protective netting panels, the damaged panels can be replaced individually instead of replacing the entire large protective net within the protective frame, thus saving costs. When a falling object impacts the protective netting panels, the piston buffer, connected to the protective frame by a traction cable, reduces the impact force on the protective frame and netting panels, protecting them from cracking under significant impact and preventing them from effectively bearing falling objects from heights, thus extending their service life. Attached Figure Description

[0023] Figure 1 This is a usage state diagram of an embodiment of this utility model;

[0024] Figure 2 This is a structural diagram of the support base in an embodiment of this utility model;

[0025] Figure 3 This is a side view of the first support in an embodiment of this utility model;

[0026] Figure 4 This is a top view of the first support in an embodiment of this utility model;

[0027] Figure 5 This is an appendix to the embodiments of this utility model. Figure 1 Enlarged view of the structure at point A in the middle;

[0028] Figure 6 This is a connection structure diagram of the protective frame and the protective mesh in an embodiment of this utility model;

[0029] Figure 7 This is a structural diagram of the C-shaped buckle in an embodiment of this utility model;

[0030] In the picture:

[0031] 1. Support base; 1.1. Support column; 1.2. First support; 1.21. First fixing plate; 1.22. First fixing sleeve; 1.23. Rope hole; 1.3. Second support; 1.31. Second fixing plate; 1.32. Second fixing sleeve; 1.4. Hinge base;

[0032] 2. Piston buffer components; 2.1 Piston cylinder; 2.2 Piston rod; 2.3 Buffer spring; 2.4 Piston head;

[0033] 3. Protective frame; 3.1 First mounting rod; 3.2 Second mounting rod; 3.3 Foundation sleeve; 3.4 Rope threading ring; 3.5 Limiting ring plate;

[0034] 4. Traction cable;

[0035] 5. Install the rope;

[0036] 6. Protective mesh panels;

[0037] 7. Horizontal pipe;

[0038] 8. First fixed pulley;

[0039] 9. Second fixed pulley;

[0040] 10. Third fixed pulley;

[0041] 11. C-shaped buckle;

[0042] 12. Connecting ear;

[0043] 13. Connecting bolt. Detailed Implementation

[0044] The technical solutions of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0045] In the description of the embodiments of this utility model, it should be understood that the terms "top," "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise expressly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model through specific circumstances.

[0046] Reference Appendix Figure 1-7 This embodiment provides a safety fall arrest device for building construction, which includes: a support base 1, a piston buffer 2, a protective frame 3, a traction cable 4, an installation rope 5, and a protective net 6. The piston buffer 2 and the protective frame 3 are located on both sides of the support base 1, the bottom end of the protective frame 3 is rotatably connected to the bottom end of the support base 1, and the top end of the protective frame 3 is connected to the piston buffer 2 through the traction cable 4 passing through the top end of the support base 1. Several sets of installation ropes 5 are arranged inside the protective frame 3, and protective nets 6 are connected to both sides of each set of installation ropes 5.

[0047] When using, first fix the support base 1 to the construction area to be protected, fix the piston buffer 2 to the non-free-air side of the construction area, place the protective frame 3 with the protective net 6 installed and the traction cable 4 pre-connected on the free-air side of the construction area, and adjust the angle between the bottom of the protective frame 3 and the support base 1 to adapt to different working conditions. Finally, connect and tighten the traction cable 4 and the piston buffer 2. The inner side of the protective frame 3 is equipped with several sets of installation ropes 5, and protective net panels 6 are connected to both sides of the installation ropes 5. Multiple sets of protective net panels 6 are spliced ​​together to form a complete large protective net to protect construction personnel. Since the installation ropes 5 are connected to the protective net panels 6 on both sides, there are no protective gaps between adjacent protective net panels 6, which can effectively ensure the safety of the operation. When a falling object damages a protective net panel 6, the damaged protective net panel 6 can be replaced individually instead of replacing the entire large protective net in the protective frame 3, which can save costs. In addition, when a falling object impacts the protective net panel 6, the protective frame 3 is connected to the piston buffer 2 through the traction cable 4. The piston buffer 2 is driven by the traction cable 4 to reduce the impact force on the protective frame 3 and the protective net panel 6, protecting the protective frame 3 and the protective net panel 6, preventing them from cracking under large impacts and failing to effectively withstand falling objects from heights, and extending their service life.

[0048] The aforementioned support base 1 includes a support column 1.1, a first support 1.2, and a second support 1.3. The first support 1.2 is located at the top of the support column 1.1 and has a rope hole 1.23 and a fixed pulley. The rope hole 1.23 and the fixed pulley are used to install the traction cable 4 and to guide and support the traction cable 4. The second support 1.3 is located at the bottom of the support column 1.1 and has a hinge seat 1.4. The hinge seat 1.4 is hinged to the bottom end of the protective frame 3 to facilitate adjustment of the tilt angle of the protective frame 3 to adapt to different construction conditions.

[0049] For ease of installation and fixation, the first support 1.2 is configured to include a first fixing plate 1.21 and a first fixing sleeve 1.22. The bottom end of the first fixing sleeve 1.22 is fitted onto the support column 1.1, and the top end is connected to the first fixing plate 1.21. The second support 1.3 is configured to include a second fixing plate 1.31 and a second fixing sleeve 1.32. The top end of the second fixing sleeve 1.32 is fitted onto the support column 1.1, and the bottom end is connected to the second fixing plate 1.31. The first fixing plate 1.21 and the second fixing plate 1.31 are respectively fixed to the top floor slab and the bottom floor slab of the construction area by anchor bolts, so that the support 1 is stably placed in the construction area and the protective effect is improved.

[0050] To better guide and support the traction cable 4 and reduce material wear, in this embodiment, a transverse tube 7 is provided through the middle of the first fixed sleeve 1.22, and the fixed pulleys are configured to include: a first fixed pulley 8 located at the top of the first fixed plate 1.21, a second fixed pulley 9 located at the bottom of the first fixed plate 1.21, and a third fixed pulley 10, with the second fixed pulley 9 and the third fixed pulley 10 located on both sides of the transverse tube 7, respectively; one end of the traction cable 4 is connected to the protective frame 3, and the other end is connected (or passes through) the first fixed pulley 8, the rope hole 1.23, the second fixed pulley 9, the transverse tube 7, and the third fixed pulley 10 in sequence, and then connected to the piston buffer 2.

[0051] The first fixed pulley 8 redirects the traction cable 4, allowing it to pass smoothly through the rope hole 1.23 and reducing direct contact between the traction cable 4 and the first fixed plate 1.21, thus reducing wear. The second fixed pulley 9 redirects the traction cable 4, allowing it to pass smoothly through the transverse tube 7 and distributing the tension of the traction cable 4, reducing local load. The third fixed pulley 10 redirects the traction cable 4, enabling it to connect with the piston buffer 2. Furthermore, by optimizing the relative heights of the second and third fixed pulleys 9 and the transverse tube 7, friction between the traction cable 4 and the transverse tube 7 can be reduced. The first fixed pulley 8, the second fixed pulley 9, and the third fixed pulley 10 work together to guide and support the traction cable 4, reducing wear and local load and extending its service life.

[0052] Reference Appendix Figure 5 The piston buffer 2 includes a piston cylinder 2.1, a piston rod 2.2, and a buffer spring 2.3. The piston rod 2.2 is movably mounted in the piston cylinder 2.1, with its top end extending out of the piston cylinder 2.1 and connected to the traction cable 4. The bottom end is equipped with a piston head 2.4 located inside the piston cylinder 2.1, and the piston head 2.4 slides against the inner wall of the piston cylinder 2.1. The buffer spring 2.3 is sleeved on the outside of the piston rod 2.2, with its two ends abutting against the inner top wall of the piston cylinder 2.1 and the piston head 2.4, respectively. When an object falls from a height, the double buffering mechanism of the piston buffer 2 reduces the impact force on the protective frame 3 and the protective net 6, thus protecting the protective frame 3 and the protective net 6.

[0053] The aforementioned dual buffering mechanism includes: Since the piston cylinder 2.1 is a sealed space, when the protective frame 3 is impacted and pulls the traction cable 4, the piston rod 2.2 moves upward, causing the piston head 2.4 to move upward as well. The volume of the space below the piston head 2.4 increases, while the total gas volume remains constant. According to Boyle's Law (at constant temperature, the volume of a gas is inversely proportional to its pressure), the air pressure below the piston head 2.4 drops sharply. This sudden drop in air pressure generates a downward reaction force, which offsets part of the external force, thus providing a buffering effect—this is the first layer of buffering. When the piston head 2.4 moves upward, the buffer spring 2.3 is subjected to upward compressive force and begins to contract. The contraction of the buffer spring 2.3 absorbs some energy, further reducing the impact of the external force. The elastic deformation of the spring effectively disperses and absorbs the impact force, making the impact on the entire system more stable—this is the second layer of buffering. As the impact decreases, the traction cable 4 slowly returns to its original position slightly. After the falling object is removed, the buffer spring 2.3 returns to its original position, causing the traction cable 4 to fully return to its original position.

[0054] Reference Appendix Figure 6 The protective frame 3 includes a first mounting rod 3.1, a second mounting rod 3.2, and two sets of sleeves. The first mounting rod 3.1 and the second mounting rod 3.2 are arranged in parallel, and their bottom ends are connected to different hinge seats 1.4. The two sets of sleeves are respectively fitted onto the first mounting rod 3.1 and the second mounting rod 3.2, and the two ends of the installation rope 5 are respectively connected to the two sets of sleeves. The sleeves can be put on or taken off from the top of the first mounting rod 3.1 or the second mounting rod 3.2, making installation and disassembly convenient. Multiple sets of installation ropes 5 can be arranged along the axial direction of the sleeves to install multiple sets of protective netting 6 along the axial direction of the sleeves, forming a large protective net in the protective frame 3. When a part of the protective netting 6 is damaged, only the damaged part of the protective netting 6 can be replaced, reducing costs.

[0055] In addition, the bushing can be configured as several coaxially distributed base bushings 3.3, with the ends of adjacent base bushings 3.3 abutting each other. If a base bushing 3.3 is damaged, only the damaged part of the base bushing 3.3 can be replaced, reducing costs.

[0056] In this embodiment, the top ends of the first mounting rod 3.1 and the second mounting rod 3.2 are respectively provided with rope loops 3.4, and the bottom ends are respectively provided with limiting ring plates 3.5. The rope loops 3.4 are used to connect the traction cable 4. The outer diameter of the limiting ring plate 3.5 is larger than the inner diameter of the sleeve. On the one hand, the limiting ring plate 3.5 can isolate the sleeve from the hinge seat 1.4 to prevent mutual obstruction. On the other hand, the plate surface of the limiting ring plate 3.5 is perpendicular to the axis of the sleeve, which can provide better support for the sleeve.

[0057] To facilitate the installation and removal of the protective netting 6, several C-shaped buckles 11 are fitted onto the installation rope 5. Each C-shaped buckle 11 has a connecting ear 12 at both ends, and the two sets of connecting ears 12 are locked together by connecting bolts 13 inserted through them. When installing the protective netting 6, one end of the connecting ear 12 is passed through the protective netting 6, and then the two connecting ears 12 are connected and locked together. The side end of the protective netting 6 can be tied to the sleeve with ropes, or a larger C-shaped buckle 11 can be fitted onto the sleeve and connected to the protective netting 6 in the same way to prevent any gaps between the side wall of the sleeve and the protective netting 6.

[0058] To protect people or objects from falling from heights, the outer wall of the sleeve is covered with a flexible protective layer to prevent rigid scraping of people or objects, while the outer wall of the C-shaped buckle 11 is covered with a flexible wear-resistant layer to reduce wear on the protective mesh 6 and improve its service life.

[0059] Compared with the prior art, the beneficial effects of this utility model include: multiple sets of protective netting panels 6 are spliced ​​together to form a large protective net. When construction debris damages the protective netting panel 6, the damaged protective netting panel 6 can be replaced individually instead of replacing the entire large protective net in the protective frame 3, which can save costs. When a falling object impacts the protective netting panel 6, since the protective frame 3 is connected to the piston buffer 2 through the traction cable 4, the piston buffer 2 is driven by the traction cable 4 to reduce the impact force on the protective frame 3 and the protective netting panel 6, protecting the protective frame 3 and the protective netting panel 6, preventing them from cracking when subjected to a large impact and thus failing to effectively withstand falling objects from heights, and extending their service life.

[0060] Although embodiments of the present invention 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 the present invention, the scope of which is defined by the appended claims and their equivalents.

[0061] The above are preferred embodiments of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A safety fall arrest device for building construction, characterized in that, include: Support base; Piston buffers and protective frames are located on both sides of the support base, with the bottom end of the protective frame rotatably connected to the bottom end of the support base, and the top end of the protective frame connected to the piston buffers via a traction cable passing through the top end of the support base. Several sets of installation ropes are located inside the protective frame, and each set of installation ropes has a protective net connected to both sides.

2. The safety fall arrest device for building construction according to claim 1, characterized in that, The support base includes: Support column; The first support is located at the top of the support column and has a rope hole and a fixed pulley thereon, the rope hole and the fixed pulley being used to install the traction cable; The second support is located at the bottom of the support column and has a hinge seat mounted thereon, which is hinged to the bottom end of the protective frame.

3. The safety fall arrest device for building construction according to claim 2, characterized in that, The first support includes a first fixed plate and a first fixed sleeve. The bottom end of the first fixed sleeve is fitted onto the support column, the top end is connected to the first fixed plate, and a transverse tube passes through the middle. The fixed pulley includes a first fixed pulley located at the top of the first fixed plate, a second fixed pulley located at the bottom of the first fixed plate, and a third fixed pulley. The second fixed pulley and the third fixed pulley are respectively located on both sides of the transverse tube. The second support includes a second fixing plate and a second fixing sleeve. The top end of the second fixing sleeve is fitted onto the support column, and the bottom end is connected to the second fixing plate.

4. The safety fall arrest device for building construction according to any one of claims 1-3, characterized in that, The piston buffer includes a piston cylinder, a piston rod, and a buffer spring. The piston rod is movably disposed in the piston cylinder, with its top end extending out of the piston cylinder and connected to the traction cable. The bottom end is provided with a piston head located inside the piston cylinder, and the piston head slides against the inner sidewall of the piston cylinder. The buffer spring is sleeved on the outside of the piston rod, with its two ends respectively abutting against the inner top wall of the piston cylinder and the piston head.

5. The safety fall arrest device for building construction according to claim 4, characterized in that, The protective frame includes a first mounting rod, a second mounting rod, and two sets of sleeves. The first mounting rod and the second mounting rod are arranged in parallel, and their bottom ends are respectively hinged to the support base. The two sets of sleeves are respectively sleeved on the first mounting rod and the second mounting rod, and the two ends of the mounting rope are respectively connected to the two sets of sleeves.

6. The safety fall arrest device for building construction according to claim 5, characterized in that, The sleeve includes several coaxially distributed base sleeves, with the ends of adjacent base sleeves abutting each other.

7. The safety fall arrest device for building construction according to claim 6, characterized in that, The first mounting rod and the second mounting rod are respectively provided with rope loops at their top ends and limit ring plates at their bottom ends. The rope loops are used to connect the traction ropes, and the outer diameter of the limit ring plates is larger than the inner diameter of the sleeve.

8. The safety fall arrest device for building construction according to any one of claims 5-7, characterized in that, The installation rope is fitted with several C-shaped buckles, and each of the two ends of the C-shaped buckles is provided with a connecting lug. The two sets of connecting lugs are locked together by connecting bolts passing through them.

9. The safety fall arrest device for building construction according to claim 8, characterized in that, The outer wall of the sleeve is covered with a flexible protective layer, and the outer wall of the C-shaped buckle is covered with a flexible wear-resistant layer.

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