Horizontal opening protection modular device

Abstract

The present application relates to construction safety protection technology field, especially point to a kind of horizontal hole protection modular device, solve the complex installation process, installation slow, affect construction efficiency problems when the protection device in prior art moves to upper layer horizontal hole.A kind of horizontal hole protection modular device, including support frame, support frame is equipped with protection plate, support frame includes multiple bottom beams, the end of bottom beam is hinged with load-bearing foot, and the hinge hole of load-bearing foot is eccentric arrangement;Protection plate upper surface is equipped with foldable protection component.The beneficial effects generated by the present application are: when lifting the protection device, load-bearing foot is rotated under the action of wall, so that load-bearing foot closely slides up along the wall, after the protection device is moved to the predetermined position, the wall releases the limit of load-bearing foot, and the load-bearing foot is automatically rotated and overlapped to the edge of the reserved hole or horizontal hole on the wall due to the eccentric weight design of load-bearing foot, so that the installation of horizontal hole protection device is quickly completed.

Description

Technical Field

[0001] This invention relates to the field of safety protection technology for construction supplies, and in particular to a modular device for protecting horizontal openings. Background Technology

[0002] Construction safety is paramount, but civil engineering projects often require numerous horizontal openings. To prevent objects from falling into these openings and striking workers below, protective devices must be installed on the outside of these openings. Current technology typically involves wedging two wooden beams into the opening and covering it with thick plywood. While this method provides adequate protection, installing the wooden beams is inconvenient. It requires measuring the opening dimensions and selecting beams of appropriate length, which also increases the workload during disassembly. Furthermore, the resulting protective measures cannot be reused and are costly in terms of materials.

[0003] Patent CN116641569A discloses a horizontal opening protection device, including a rectangular protective plate, a limiting component, a height adjustment component, a clamping component, and a fence component. The limiting component includes a limiting rod slidably connected to the protective plate. The height adjustment component includes a height adjustment rod, which is slidably connected to the limiting rod. The clamping component includes a clamping rod, which is rotatably connected to the height adjustment rod. The fence component includes four sets of guardrails evenly distributed around the protective plate. This protection device is fixed to the inner wall of the horizontal opening by the limiting component, thus protecting the opening. However, its operation is complex. When raising the device from a lower to an upper horizontal opening, it needs to be completely retracted, meaning the limiting component, height adjustment component, clamping component, and fence component must all be returned to their original positions. After the device reaches the upper horizontal opening, it must be unfolded for installation, severely impacting installation efficiency and construction progress. Summary of the Invention

[0004] This invention proposes a modular device for protecting horizontal openings, which solves the problems of complex and slow installation process when the protective device is moved to the upper-level horizontal opening, thus affecting construction efficiency in the prior art.

[0005] The technical solution of this invention is implemented as follows:

[0006] A modular device for protecting horizontal openings includes a support frame with a protective plate mounted on it. The support frame includes multiple bottom beams, each with a load-bearing leg hinged to its end. The hinge holes of the load-bearing legs are eccentrically arranged. The upper surface of the protective plate has foldable protective components. The support frame provides support for the protective plate, enabling it to shield and protect the horizontal opening. Specifically, when the protective device is lifted, the load-bearing legs rotate under the action of the wall, causing them to slide upwards against the wall. After the protective device reaches a predetermined position, the wall's restriction on the load-bearing legs is released. Due to their eccentric weight design, the load-bearing legs automatically rotate and engage with a pre-reserved position on the wall or the edge of the horizontal opening, quickly completing the installation of the horizontal opening protection device and improving installation efficiency. Furthermore, the protective components on the protective plate can prevent workers from accidentally climbing onto the protective plate, ensuring worker safety.

[0007] The load-bearing leg includes an integrally connected load-bearing leg and a counterweight leg. A hinge hole is located between the load-bearing leg and the counterweight leg, and the inner surfaces of the load-bearing leg and the counterweight leg are perpendicular to each other. The load-bearing leg can rotate around the hinge hole. When the wall surface of the horizontal opening removes the restriction on the load-bearing leg, under the action of the counterweight leg, the load-bearing leg rotates around the hinge hole, making the inner surface of the load-bearing leg horizontal and the inner surface of the counterweight leg vertical. This allows the load-bearing leg to overlap the reserved position on the wall surface or the edge of the horizontal opening. At the same time, the counterweight leg will contact the wall surface to limit the load-bearing leg, thus realizing the support of the load-bearing leg for the bottom beam.

[0008] The angle between the outer and inner sides of the load-bearing leg is A, and the angle A ranges from 10° to 80°. The angle A affects the structural strength and overlap length of the load-bearing leg. If the angle A is too small, the structural strength of the load-bearing leg will be low, and the load-bearing leg is prone to breakage. If the angle A is too large, the overlap length of the load-bearing leg at the reserved position on the wall or the edge of the horizontal opening will be shortened, which may lead to unstable overlap of the load-bearing leg and the falling of the protective device.

[0009] The inner surfaces of the load-bearing legs and counterweight legs are respectively provided with anti-slip pads. The anti-slip pads increase the friction between the load-bearing legs and counterweight legs and the horizontal opening, preventing the load-bearing legs from wobbling and stabilizing the relative position of the load-bearing legs and the horizontal opening, thereby ensuring the stability of the protective device when installed in the horizontal opening.

[0010] The bottom beam has a detachable connecting member at its end. The load-bearing foot is hinged to the connecting member, and the connecting member is equipped with an anti-accidental contact mechanism to restrict the rotation of the load-bearing foot. The load-bearing foot can swing up and down on the connecting member to prevent interference between the load-bearing foot and the wall during the raising of the protective device, thus affecting the use of the protective device. In addition, after the protective device rises to the designated position, the load-bearing foot overlaps with the edge of the hole or horizontal opening in the wall. At this time, the anti-accidental contact structure can limit and lock the load-bearing foot, restricting its rotation and ensuring a stable overlap between the load-bearing foot and the edge of the hole or horizontal opening in the wall, thereby ensuring the stability of the protective device during use.

[0011] The anti-accidental touch mechanism includes a sleeve fixedly mounted on the connecting member and a limiting rod passing through the sleeve. A side rod is hinged to the upper end of the limiting rod, and a positioning head is fixedly connected to the upper end of the side rod. When the anti-accidental touch mechanism is in use, the limiting rod extends downward out of the sleeve and engages with the outer side of the counterweight leg. When the side rod and the limiting rod are collinear, the side rod enters the sleeve. At this time, the limiting rod extends downwards from the sleeve and engages with the outer side of the counterweight leg. The positioning head at the upper end of the side rod engages with the upper end of the sleeve. The positioning head positions the side rod and the limiting rod, ensuring their accurate positioning and limiting the load-bearing foot, thus ensuring its stability during use. In addition, before the protective device rises, the positioning head lifts the side rod and the limiting rod upwards. Then, the side rod is rotated relative to the limiting rod, making them non-collinear, i.e., the side rod is perpendicular to the limiting rod. This removes the limiting rod's restriction on the counterweight leg, allowing the load-bearing foot to rotate normally. This facilitates the rotation of the load-bearing foot during the rising of the protective device, avoids interference, and ensures the smooth rising of the protective device.

[0012] The support frame also includes multiple square tubes, which are positioned above the base beam, with protective plates mounted on the square tubes. Lifting rings are located at both ends of the base beam. The square tubes are evenly distributed on the base beam and are perpendicular to it. The square tubes are connected and fixed to the base beam using U-bolts to ensure stable connection. The protective plates can be fixed to the square tubes with self-tapping screws for easy installation and fixation. The lifting rings at the ends of the base beam facilitate connection to hoisting equipment, allowing the equipment to easily lift the protective device during elevation.

[0013] The bottom beam comprises multiple support units, each being an I-beam. Ribs are provided at both ends of the I-beams, and connecting bolts pass through these ribs. Adjacent support units are connected via these connecting bolts. When the protective device is in use, the number of support units can be determined based on the size of the horizontal opening. The support units are then connected using connecting bolts, allowing the connected units to adapt to the size of the horizontal opening. This enhances the applicability of the protective device, enabling it to protect horizontal openings of different sizes and allowing for reuse.

[0014] The protective assembly includes a protective frame and a support rod. One side of the protective frame and one end of the support rod are hinged to a protective plate, and the other end of the support rod is detachably connected to the middle of the protective frame. Specifically, after the protective device is installed in place, the protective frame is erected. At this time, the other end of the support rod is connected to the middle of the protective frame, forming a triangular structure with the support rod, the protective frame, and the protective plate. The support rod provides support for the protective frame, and the protective frame effectively prevents operators from climbing onto the protective plate, ensuring that operators do not accidentally enter the protective device during construction, thereby guaranteeing operator safety.

[0015] The inner wall of the horizontal opening is equipped with a pre-embedded box with a side opening. The bottom surface of the inner side of the pre-embedded box is a horizontally arranged support platform. The load-bearing legs of the load-bearing feet cooperate with the bottom surface of the inner side of the pre-embedded box, which provides support for the load-bearing legs. The pre-embedded box is installed during the pouring of the wall concrete. The installation of the pre-embedded box eliminates the drilling step in the traditional installation of protective devices, improves the installation efficiency of the protective devices, and thus improves the efficiency of building construction.

[0016] The beneficial effects of this invention are as follows: the protective device can be connected to the edge of the pre-reserved hole or horizontal opening on the wall by the load-bearing foot, making the installation of the protective device convenient; in addition, when the protective device is lifted, the load-bearing foot rotates under the action of the wall, so that the load-bearing foot slides upward close to the wall. After the protective device moves to the predetermined position, the wall's restriction on the load-bearing foot is released. Due to the eccentric self-weight design, the load-bearing foot automatically rotates and connects to the edge of the pre-reserved hole or horizontal opening on the wall, quickly completing the installation of the horizontal opening protective device and improving the lifting and installation efficiency of the protective device.

[0017] The connecting components at the end of the bottom beam are equipped with an anti-accidental contact mechanism. After the protective device rises to the designated position, the load-bearing foot overlaps with the edge of the hole or horizontal opening on the wall. At this time, the anti-accidental contact structure can limit and lock the load-bearing foot, restrict the rotation of the load-bearing foot, and ensure the stable overlap between the load-bearing foot and the edge of the hole or horizontal opening on the wall, thereby ensuring the stability of the protective device during use.

[0018] In addition, the bottom beam is made of multiple support units spliced ​​together. When the protective device is used, the number of support units can be determined according to the size of the horizontal opening. The support units are connected by connecting bolts so that the support units can adapt to the size of the horizontal opening after connection, which enhances the applicability of the protective device and makes it suitable for the protection of horizontal openings of different sizes, thereby enabling the protective device to be reused.

[0019] After the protective device is installed in place, the protective frame is erected. At this time, the other end of the support rod is connected to the middle of the protective frame, so that the support rod, the protective frame and the protective plate form a triangular structure. The support rod provides support for the protective frame, and the protective frame can effectively prevent operators from climbing onto the protective plate, ensuring that during the construction process, operators are prevented from accidentally entering the protective device, thereby ensuring the safety of the operators. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a modular device for protecting horizontal openings according to the present invention.

[0022] Figure 2 This is a schematic diagram of the load-bearing leg structure;

[0023] Figure 3 This is a side view of the load-bearing leg;

[0024] Figure 4 This is a side view of the embedded box;

[0025] Figure 5 This is a schematic diagram showing the fit between the load-bearing foot and the embedded box;

[0026] Figure 6 This is a schematic diagram showing the fit between the load-bearing foot and the edge of the horizontal opening;

[0027] Figure 7 Schematic diagram of the mechanism to prevent accidental activation;

[0028] Figure 8 Indication of protective agency Figure 1 ;

[0029] Figure 9 Indication of protective agency Figure 2 ;

[0030] Figure 10 This is a schematic diagram of the protective mechanism in its folded state.

[0031] In the diagram: 1. Bottom beam, 2. Embedded box, 21. Support platform, 3. Lifting ring, 4. Load-bearing foot, 41. Hinge hole, 42. Load-bearing leg, 43. Counterweight leg, 44. Anti-slip pad, 45. Notch, 5. Square tube, 6. Protective plate, 7. Connecting component, 8. Anti-accidental contact mechanism, 81. Sleeve, 82. Limiting rod, 83. Side rod, 84. Positioning head, 9. Protective frame, 10. Limiting bolt, 11. Support rod, 12. Pin, 13. Edge of horizontal opening. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, such as Figure 1 As shown, a modular device for protecting horizontal openings includes a support frame with a protective plate 6 mounted on it. The support frame includes multiple bottom beams 1, with load-bearing feet 4 hinged to the ends of the bottom beams 1. The hinge holes 41 of the load-bearing feet 4 are eccentrically arranged. The upper surface of the protective plate 6 is provided with foldable protective components. The support frame provides support for the protective plate 6, enabling it to shield and protect the horizontal opening. Specifically, the load-bearing feet 4 at the ends of the bottom beams 1 of the support frame overlap the horizontal opening. When the protective device is lifted, the load-bearing feet 4 rotate under the action of the wall, causing them to slide upwards against the wall. After the protective device moves to a predetermined position, as shown... Figure 5 , Figure 6 As shown, the wall's limit on the load-bearing foot 4 is released. Due to its eccentric self-weight design, the load-bearing foot 4 automatically rotates and overlaps the reserved position on the wall or the edge of the horizontal opening, quickly completing the installation of the horizontal opening protection device and improving the installation efficiency of the protection device. In addition, the protective components on the protective plate can block the workers and prevent them from accidentally climbing onto the protective plate 6, ensuring the safety of the workers.

[0034] Furthermore, such as Figure 2As shown, the load-bearing leg 4 includes an integrally connected load-bearing leg 42 and a counterweight leg 43. The hinge hole 41 is located between the load-bearing leg 42 and the counterweight leg 43, and the inner surfaces of the load-bearing leg 42 and the counterweight leg 43 are perpendicular to each other. The load-bearing leg 4 can rotate around the hinge hole 41. When the wall surface of the horizontal opening removes the restriction on the load-bearing leg 42, under the action of the counterweight leg 43, the load-bearing leg 4 rotates around the hinge hole 41, so that the inner side of the load-bearing leg 42 is arranged horizontally and the inner side of the counterweight leg 43 is arranged vertically. This allows the load-bearing leg 42 to overlap the reserved position on the wall or the edge of the horizontal opening, while the counterweight leg 43 contacts the wall surface to limit the load-bearing leg 4, thus supporting the bottom beam 1. This allows the bottom beam 1 to overlap the reserved position on the wall or the edge of the horizontal opening, realizing the installation of the protective device.

[0035] Furthermore, the angle between the outer surface and the inner surface of the load-bearing leg 42 is A, with A ranging from 10° to 80°. The angle A affects the structural strength and overlap length of the load-bearing leg 42. If the angle is too small, the structural strength of the load-bearing leg 42 will be low, making it prone to breakage. If the angle is too large, the overlap length at the reserved position on the wall or the edge of the horizontal opening will be shortened, making the overlap of the load-bearing leg 42 unstable and causing the protective device to fall off. In this embodiment, the angle A is 40°, which ensures sufficient overlap length at the reserved position on the wall or the edge of the horizontal opening while maintaining the structural strength of the load-bearing leg 42, effectively improving the practicality of the load-bearing leg.

[0036] Furthermore, anti-slip pads 44 are provided on the inner sides of the load-bearing leg 42 and the counterweight leg 43 respectively. The anti-slip pads 44 increase the friction between the load-bearing leg 42 and the counterweight leg 43 and the horizontal opening, prevent the load-bearing leg 4 from shaking, stabilize the relative position of the load-bearing leg 4 and the horizontal opening, and thus ensure the stable installation of the protective device in the horizontal opening.

[0037] In Example 2, based on Example 1, a connecting member 7 is detachably provided at the end of the bottom beam 1. The load-bearing leg 4 is hinged to the connecting member 7, and the connecting member 7 is provided with an anti-accidental contact mechanism 8 to restrict the rotation of the load-bearing leg 4. Figure 5 , Figure 6As shown, the connecting component 7 is composed of three mutually perpendicular steel plates welded together. The side plate of the connecting component 7 is fixedly connected to the end of the bottom beam 1 by multiple connecting bolts, so that the connecting component 7 is fixed to the bottom beam 1. The vertical plate of the connecting component 7 is connected to the load-bearing foot 4. The load-bearing foot 4 is connected to the vertical plate of the connecting component 7 through a hinge shaft, so that the load-bearing foot 4 can rotate around the hinge shaft to prevent interference between the load-bearing foot 4 and the wall during the rising of the protective device, which would affect the use of the protective device. The top plate of the connecting component 7 is connected to the anti-accidental contact mechanism 8. After the protective device rises to the designated position, the load-bearing foot 4 overlaps with the edge of the hole or horizontal opening on the wall. At this time, the anti-accidental contact mechanism 8 can limit and lock the load-bearing foot 4 by limiting the outer side of the counterweight leg 43, restricting the rotation of the load-bearing foot 4, ensuring the stability of the overlap between the load-bearing foot 4 and the edge of the hole or horizontal opening on the wall, and thus ensuring the stability of the protective device during use.

[0038] Furthermore, such as Figure 7 As shown, the anti-accidental contact mechanism 8 includes a sleeve 81 fixedly mounted on the connecting member 7 and a limiting rod 82 passing through the sleeve 81. A side rod 83 is hinged to the upper end of the limiting rod 82, and a positioning head 84 is fixedly connected to the upper end of the side rod 83. When the anti-accidental contact mechanism 8 is in use, the limiting rod 82 extends downwards from the sleeve 81 and engages with the outer surface of the counterweight leg 43. Specifically, when the side rod 83 and the limiting rod 82 are collinear, the side rod 83 enters the sleeve 81. At this time, the limiting rod 82 extends downwards from the sleeve 81 and engages with the outer surface of the counterweight leg 43. The positioning head 84 at the upper end of the side rod 83 engages with the upper end of the sleeve 81. The positioning head 84 positions the side rod 83 and the limiting rod 82, preventing them from falling out of the sleeve 81 and ensuring accurate positioning of the side rod 83 and the limiting rod 82. This achieves the limiting of the load-bearing leg 4, ensuring that the load-bearing leg 4 is in a safe position. Stability during use; in addition, before the protective device rises, the side rod 83 and the limiting rod 82 are lifted upward by the positioning head 84, and then the side rod 83 is rotated relative to the limiting rod 82 so that the side rod 83 and the limiting rod 82 are in a non-collinear state, that is, the side rod 83 is perpendicular to the limiting rod 82. This allows the limiting rod 82 to remove its restriction on the counterweight leg 43, so that the load-bearing foot 4 can rotate normally. This facilitates the rotation of the load-bearing foot 4 during the rise of the protective device, avoids interference, and ensures the smooth rise of the protective device.

[0039] Example 3, based on Example 2, has a notch in the thickness direction for the load-bearing leg 4, such as... Figure 3As shown, the width of the notch is greater than the thickness of the vertical plate of the connecting member 7. When the load-bearing foot 4 is installed, the vertical plate of the connecting member 7 is inserted into the notch. The vertical plate of the connecting member 7 can limit the movement of the load-bearing foot 4, preventing the load-bearing foot 4 from moving back and forth and avoiding the situation where the position of the load-bearing foot 4 is offset from the reserved hole in the wall. In addition, the thickness of the side wall on both sides of the notch of the load-bearing foot 4 is not less than 0.7 times the width of the notch, so that the load-bearing foot 4 still has good structural strength even with the notch, ensuring the safety of the load-bearing foot 4 in use, and thus ensuring the safety of the protective device in use.

[0040] Example 4, based on Example 2 or Example 3, further includes multiple square tubes 5, which are positioned above the bottom beam 1, and protective plates 6 are mounted on the square tubes 5; lifting rings 3 are provided at both ends of the bottom beam 1. In this example, there are two bottom beams 1 arranged in parallel, and four square tubes 5 arranged in parallel and perpendicular to the bottom beam 1. The square tubes 5 are fixed to the bottom beam 1 with U-bolts. The protective plate 6 is a steel frame checkered plate, which is fixed to the square tubes 5 with self-tapping screws to achieve stable installation of the protective plate 6. The lifting rings 3 are welded to the bottom beam 1, and the lifting rings 3 at the ends of the bottom beam 1 facilitate connection with lifting equipment, thus allowing the lifting equipment to easily lift the protective device through the lifting rings 3 when it is being raised.

[0041] Furthermore, the bottom beam 1 comprises multiple support units, each being an I-beam. Ribs are provided at both ends of the I-beams, and connecting bolts pass through the ribs. Adjacent support units are connected via these connecting bolts. The entire bottom beam 1 is formed by splicing multiple support units, with the I-beams and ribs welded together. When the protective device is in use, the number of support units can be determined based on the size of the horizontal opening. The support units are then connected using connecting bolts, allowing the connected units to adapt to the size of the horizontal opening, enhancing the applicability of the protective device. This enables the device to protect horizontal openings of different sizes and allows for reuse.

[0042] Example 5, based on Example 1, such as Figure 8 , Figure 9 , Figure 10 As shown, the protective assembly includes a protective frame 9 and a support rod 11. One side of the protective frame 9 and one end of the support rod 11 are hinged to the protective plate 6, and the other end of the support rod 11 is detachably connected to the middle of the protective frame 9. Specifically, one side of the protective frame 9 and one end of the support rod 11 are rotatably connected to the protective plate 6 via pins 12, and the protective frame 9 and the support rod 11 can rotate around the pins 12. When the protective assembly is deployed, as... Figure 8 , Figure 9As shown, the other end of the support rod 11 is connected to the middle of the protective frame 9 via a limiting bolt 10. The support rod 11 provides support for the protective frame 9, which effectively prevents workers from climbing onto the protective plate 6, ensuring worker safety. When the protective assembly is folded, the other end of the support rod 11 is disconnected from the middle of the protective frame 9, and the protective frame 9 and the support rod 11 rotate around the pin 12, causing them to fit against the protective plate 6, facilitating the lifting of the protective device. Specifically, the protective assembly unfolds when the protective device is in use and folds when the protective device is being lifted.

[0043] Furthermore, such as Figure 4 As shown, a pre-embedded box 2 with a side opening is provided on the inner wall of the horizontal opening. The bottom surface of the inner side of the pre-embedded box 2 is a horizontally arranged support platform 21. The pre-embedded box 2 is set during the pouring of the wall concrete. After the wall concrete is poured, the pre-embedded box 2 is embedded in the wall. After the protective device is raised to the designated position, the load-bearing leg 4 overlaps with the pre-embedded box 2. At this time, the load-bearing leg 42 cooperates with the support platform 21 in the pre-embedded box 2. The support platform 21 provides support for the bottom beam 1 through the load-bearing leg 4, thereby providing support for the protective device. Furthermore, the setting of the pre-embedded box 2 eliminates the drilling step in the traditional installation of protective devices, improves the installation efficiency of the protective device, and thus improves the efficiency of building construction.

[0044] In addition, before embedding the pre-embedded box 2, apply an oil-based release agent to the outer surface of the pre-embedded box 2. After the protective device is used, the pre-embedded box 2 can be removed from the wall for easy reuse.

[0045] Assembly of the protective device before use: Select an appropriate number of support units according to the size of the horizontal opening and connect them to form a bottom beam 1. The support units at both ends of the bottom beam 1 are I-beam structures with lifting rings 3. Install connecting components 7 at both ends of the bottom beam 1, and install load-bearing feet 4 and anti-accidental contact mechanisms 8 on the connecting components 7. The anti-accidental contact mechanisms 8 are in the unlocked state. Fix square tubes 5 on the bottom beam 1 with U-bolts. Install protective plates 6 on square tubes 5 with self-tapping screws. Install protective frames 9 and support rods 11 on protective plates 6, and keep the protective frames 9 and support rods 11 in the folded state.

[0046] Installation of the protective device: Place the protective device below, connect the lifting equipment to the lifting ring 3, and then the lifting equipment lifts the protective device through the lifting ring 3. During the lifting process, the supporting leg 4 deflects under the limiting action of the wall, and the outer side of the supporting leg 42 on the supporting leg 4 slides upward close to the wall. After the protective device moves to the predetermined position, as... Figure 5 , Figure 6As shown, the wall's limit on the load-bearing foot 4 is released. Due to its eccentric self-weight design, the load-bearing foot 4 automatically rotates and connects to the support platform 21 of the embedded box 2 or the edge of the horizontal opening, quickly completing the installation of the horizontal opening protection device and improving the installation efficiency of the protection device. After the protection device is installed in place, the protection components are unfolded, and the support rod 11 provides support for the protection frame 9. At this time, the protection frame 9 can effectively prevent workers from climbing onto the protection plate 6.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A modular device for protecting horizontal openings, comprising a support frame, a protective plate (6) on the support frame, and the support frame including multiple bottom beams (1), characterized in that, The bottom beam (1) is hinged to a load-bearing foot (4) at its end, and the hinge hole (41) of the load-bearing foot (4) is eccentrically arranged; the upper surface of the protective plate (6) is provided with a foldable protective component. The load-bearing leg (4) includes an integrally connected load-bearing leg (42) and counterweight leg (43). The hinge hole (41) is located between the load-bearing leg (42) and the counterweight leg (43). The inner surfaces of the load-bearing leg (42) and the counterweight leg (43) are perpendicular to each other. When the wall of the horizontal opening removes the restriction on the load-bearing leg (42), the load-bearing leg (4) rotates around the hinge hole (41) under the action of the counterweight leg (43), so that the inner side of the load-bearing leg (42) is arranged horizontally and the inner side of the counterweight leg (43) is arranged vertically. The end of the bottom beam (1) is detachably provided with a connecting member (7), the load-bearing foot (4) is hinged to the connecting member (7), and the connecting member (7) is provided with an anti-accidental contact mechanism (8) to restrict the rotation of the load-bearing foot (4). The anti-accidental touch mechanism (8) includes a sleeve (81) fixedly mounted on the connecting member (7) and a limiting rod (82) passing through the sleeve (81). A side rod (83) is hinged to the upper end of the limiting rod (82), and a positioning head (84) is fixedly connected to the upper end of the side rod (83). When the anti-accidental touch mechanism (8) is in use, the limiting rod (82) extends downward out of the sleeve (81) and engages with the outer side of the counterweight leg (43).

2. The modular device for protecting horizontal openings according to claim 1, characterized in that, The angle between the outer side of the load-bearing leg (42) and the inner side of the load-bearing leg (42) is A, and the angle range of A is 10°~80°.

3. The modular device for protecting horizontal openings according to claim 2, characterized in that, The inner sides of the load-bearing leg (42) and the counterweight leg (43) are respectively provided with anti-slip pads (44).

4. The modular device for protecting horizontal openings according to any one of claims 1 to 3, characterized in that, The support frame also includes multiple square tubes (5), which are set above the bottom beam (1), and protective plates (6) are set on the square tubes (5); the bottom beam (1) is provided with lifting rings (3) at both ends.

5. The modular device for protecting horizontal openings according to claim 4, characterized in that, The bottom beam (1) includes multiple support units. The support units are I-beams. Both ends of the I-beams are provided with ribs. Connecting bolts are passed through the ribs. Adjacent support units are connected by connecting bolts on the ribs.

6. The modular device for protecting horizontal openings according to any one of claims 1 to 3 and 5, characterized in that, The protective assembly includes a protective frame (9) and a support rod (11). One side of the protective frame (9) and one end of the support rod (11) are respectively hinged to the protective plate (6), and the other end of the support rod (11) is detachably connected to the middle of the protective frame (9).

7. The modular device for protecting horizontal openings according to claim 6, characterized in that, The inner wall of the horizontal opening is provided with a pre-embedded box (2) with a side opening, and the bottom surface of the inner side of the pre-embedded box (2) is a horizontally arranged support platform (21).

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