A hole protection safety support device for civil engineering construction

Abstract

The application discloses a hole protection safety supporting device for civil engineering construction and relates to the field of protection safety supporting devices.The hole formed by the existing civil engineering construction is not provided with effective protection warning equipment, cannot effectively protect the construction personnel, is inconvenient to block the hole, and is inconvenient to store and assemble the protection device.The hole protection safety supporting device is provided with the following scheme, which comprises a base, a supporting cylinder, a bearing sleeve, a supporting plate, a lead screw, a partition plate, a clamping groove, an opening, a first sliding plate and a second sliding plate.The first sliding plate and the second sliding plate are both slidingly arranged in the supporting cylinder and are threadedly arranged on the outer side surface of the lead screw.A guardrail connecting assembly is arranged between the clamping groove and the first sliding plate, and a mesh connecting assembly is arranged between the opening and the second sliding plate.The device has the characteristics of flexible assembly, adjustment, storage and mesh setting in the hole, and effectively improves the safety protection.

Description

Technical Field

[0001] This invention relates to the field of protective safety support devices, and more particularly to a protective safety support device for openings in civil engineering construction. Background Technology

[0002] "Civil engineering" is a general term encompassing civil engineering and building engineering. It is an engineering discipline that constructs various facilities and sites for human life, production, and protection activities. It covers the construction of buildings, structures, and engineering works within the scope of facilities and sites in various engineering fields, including above-ground, underground, land, water, and underwater projects such as houses, roads, railways, airports, bridges, water conservancy, ports, tunnels, water supply and drainage, and protection. It includes not only the various technical activities such as surveying, design, construction, maintenance, and management during the construction process, but also the materials, equipment, and supplies consumed during the construction process.

[0003] However, existing civil engineering projects often create numerous hazardous construction areas on site, or require openings in the ground or walls. These openings, if not carefully maintained, can easily lead to workers falling in, posing significant safety hazards. Existing protective measures typically involve erecting simple guardrails around the openings as warnings. However, these guardrails only serve a warning purpose and generally do not provide effective protection in the event of a hazard. Furthermore, existing guardrails are inconvenient for sealing openings in the ground, and they are not easy to flexibly assemble and store. Therefore, this paper proposes a safety support device for protecting openings in civil engineering construction. Summary of the Invention

[0004] The purpose of this invention is to provide a safety support device for protecting openings in civil engineering construction, which solves the problems of existing civil engineering construction openings lacking effective protective and warning devices, failing to effectively protect construction workers, being inconvenient to seal the openings, and being inconvenient to store and assemble the protective device itself.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a safety support device for protecting openings in civil engineering construction, comprising a base, a support cylinder, and a bearing sleeve. The bearing sleeve is fixedly installed on the lower end face of the support cylinder, and the upper end of the base is rotatably fitted onto the outside of the bearing sleeve. Support plates are fixedly connected to both sides of the base. A lead screw is rotatably fitted between the upper and lower inner walls of the support cylinder. Partitions are fixedly fitted on both the upper and lower sides of the inner wall of the support cylinder. Slots are provided on both the left and right sides of the support cylinder, and openings are provided on the front and rear sides. A first sliding plate and a second sliding plate are respectively provided on the side of the partitions on the upper and lower sides that are far apart and close to each other. The first sliding plate and the second sliding plate are slidably disposed in the support cylinder and threaded onto the outer side of the lead screw. A guardrail connecting assembly is provided between the slot and the first sliding plate, and a net connecting assembly is provided between the opening and the second sliding plate.

[0006] Preferably, multiple bolt holes are provided on both sides of the support plate, and positioning bolts are fixedly arranged in an array between the upper end face of the base and the lower end face of the support cylinder. The lead screw is rotatably mounted in the upper and lower partition plates through the bearing.

[0007] Preferably, the guardrail connecting assembly includes a frame, a limiting groove, a circular seat, a first spring, a hinge seat, and a rotating rod. Frames are slidably disposed in the grooves on both sides, and limiting grooves are formed on the upper and lower inner walls of the frames. Circular seats are slidably disposed in the limiting grooves. A first spring is fixedly connected between the circular seat and the inner wall of the limiting groove. Hinges are fixedly installed at the upper and lower ends of each frame and on the left and right sides of the first sliding plate on the upper and lower sides. A rotating rod is rotatably connected between adjacent hinge seats.

[0008] Preferably, the net connecting assembly includes a cover plate, an inclined block, an L-shaped sleeve plate, a limiting slide rod, a second spring, and a hanging ring. A cover plate is fitted inside each of the openings on both sides. The upper and lower ends of the cover plates on both sides, which are close to each other, are symmetrically fixedly connected with an inclined block and an L-shaped sleeve plate. Limiting slide rods are fixedly connected to the upper and lower ends of the inner walls on both the front and rear sides of the support cylinder. The L-shaped sleeve plate is slidably fitted onto the surface of the limiting slide rod on its respective side, and a second spring is fitted onto the surface of the limiting slide rod. A hanging ring is fixedly connected to the upper and lower ends of the cover plates on both sides, which are close to each other.

[0009] Preferably, both the upper and lower ends of the lead screw are rotatably mounted on the upper and lower inner walls of the support cylinder via bearings, and the upper end of the lead screw extends above the support cylinder, with a ball fixedly connected to the upper extension end. The threads of the lead screw on the upper and lower surfaces inside the support cylinder are arranged in opposite directions.

[0010] Preferably, the first sliding plates on the upper and lower sides are rotatably connected to the upper and lower ends of the card frame via hinge seats on opposite sides, and the card frame is slidably disposed in the card slot on each side.

[0011] Preferably, the ends of the circular card seats on the upper and lower sides that are close to each other extend into the card frame through the limiting slide grooves on the upper and lower sides, and the sides of the circular card seats on the upper and lower sides that are far from each other are respectively fixedly connected to the inner wall of the limiting slide groove on their respective sides with a first spring.

[0012] Preferably, each of the two inclined blocks on the upper and lower sides of the cover plate is fixedly connected to a hanging ring on the side that is far apart from each other, and an L-shaped sleeve plate is provided on the side that is far apart from each other on the upper and lower sides of the hanging ring.

[0013] Preferably, the sides of each of the inclined blocks that are close to each other are all inclined surfaces.

[0014] Preferably, the openings on both sides are formed between the upper and lower partitions, and the ends of the second sliding plates on the upper and lower sides that are far apart from each other are respectively connected to the inclined surfaces of the inclined blocks that are fixedly connected to the sides of the cover plates that are close to each other and slide in contact with each other.

[0015] Compared with related technologies, the safety support device for protecting openings in civil engineering construction provided by the present invention has the following beneficial effects: 1. This invention provides a safety support device for protecting openings in civil engineering construction. A bearing seat is fixedly installed on the lower end face of the support cylinder, and a base is rotatably mounted on the bearing seat. Support plates are fixedly connected to both sides of the base, and bolt holes are provided on the support plates. Positioning bolts are arranged in an array between the upper end face of the base and the support cylinder. By removing the positioning bolts, the relative angle between the base and the support cylinder can be rotated, allowing for flexible adjustment of the support plates on both sides to different positions on the left, right, front, back, or side of the support cylinder, facilitating practical application. Furthermore, bolts can be installed in the bolt holes to securely and stably install the base and support cylinder on the ground.

[0016] 2. This invention provides a safety support device for protecting openings in civil engineering construction. By rotating the screw, the first sliding plates on the upper and lower sides can be adjusted, which in turn drives the rotating rod to rotate, allowing the two side frames to slide out of their respective slots and move away from each other. Limiting grooves are provided on the inner walls of the upper and lower sides of the frames, and circular seats are slidably installed within these grooves. The ends of the circular seats on the upper and lower sides extend into the frames, while the ends that move away from each other are slidably installed in the limiting grooves on their respective sides. A first spring is fixedly connected to the inner wall of the limiting groove. This allows for convenient installation of various guardrails by pressing the circular seats to slide within the limiting grooves. When the two side frames slide out of their slots and move away from each other, the support cylinders and bases are arranged in an array, facilitating the installation of guardrails in adjacent frames. This design is convenient for use and installation, and also easy to fold and store.

[0017] 3. This invention provides a safety support device for protecting openings in civil engineering construction. When the screw rod is rotated to adjust the two side frames to move away from each other, it will simultaneously drive the upper and lower second sliding plates to move away from each other. Then, through its cooperation with the inclined block, it will push the two side cover plates to move away from each other and slide out of the opening to the outside of the support cylinder. At the same time, the L-shaped sleeve plate can compress the second spring. When operating in the opposite direction, under the action of the second spring, the cover plate and the frame will gradually return to their original positions. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of a safety support device for protecting openings in civil engineering construction according to the present invention.

[0019] Figure 2 This is a bottom view structural diagram of a safety support device for protecting openings in civil engineering construction according to the present invention.

[0020] Figure 3 This is a cross-sectional structural schematic diagram of a safety support device for protecting openings in civil engineering construction according to the present invention.

[0021] Figure 4 This is a cross-sectional view of the structure of a safety support device for protecting openings in civil engineering construction according to the present invention.

[0022] Figure 5 This is a side sectional view of the structure of a safety support device for protecting openings in civil engineering construction according to the present invention.

[0023] Figure 6 This is a top sectional view of the structure of a safety support device for protecting openings in civil engineering construction, according to the present invention.

[0024] In the diagram: 1. Base; 2. Support cylinder; 3. Bearing sleeve; 4. Support plate; 5. Bolt hole; 6. Partition plate; 7. Lead screw; 8. Ball; 9. Slot; 10. Opening; 11. First sliding plate; 12. Second sliding plate; 13. Frame; 14. Limiting slide groove; 15. Circular seat; 16. First spring; 17. Hinge seat; 18. Rotating rod; 19. Cover plate; 20. Inclined block; 21. L-shaped sleeve plate; 22. Limiting slide rod; 23. Second spring; 24. Positioning bolt; 25. Hanging ring. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0026] Example 1: Please see Figure 1-6 This invention provides a technical solution: a safety support device for protecting openings in civil engineering construction, comprising a base 1, a support cylinder 2, and a bearing sleeve 3. Support plates 4 are fixedly connected to both the left and right sides of the base 1. A lead screw 7 is rotatably fitted between the upper and lower inner walls of the support cylinder 2. Partition plates 6 are fixedly fitted to both the upper and lower inner walls of the support cylinder 2. Slots 9 are provided on both the left and right sides of the support cylinder 2, and openings 10 are provided on the front and rear sides. A first sliding plate 11 and a second sliding plate 12 are respectively provided on the side of the partition plates 6 that are far apart from each other and on the side that are close to each other. The second slide plate 12 is slidably disposed inside the support cylinder 2 and threaded onto the outer side of the lead screw 7. A guardrail connecting component is provided between the slot 9 and the first slide plate 11. A net connecting component is provided between the opening 10 and the second slide plate 12. A bearing sleeve 3 is fixedly installed on the lower end face of the support cylinder 2. The upper end of the base 1 is rotatably fitted onto the outside of the bearing sleeve 3. Multiple bolt holes 5 are also provided on the support plates 4 on both sides. Positioning bolts 24 are fixedly arranged in an array between the upper end face of the base 1 and the lower end face of the support cylinder 2. The lead screw 7 is rotatably fitted into the upper and lower partition plates 6 through the bearing.

[0027] In this embodiment, a bearing seat 3 is fixedly installed on the lower end face of the support cylinder 2, and a base 1 is rotatably mounted on the bearing seat 3. Support plates 4 are fixedly connected to both sides of the base 1, and bolt holes 5 are provided on the support plates 4. Positioning bolts 24 are arranged in an array between the upper end face of the base 1 and the support cylinder 2. By removing the positioning bolts 24, the relative angle between the base 1 and the support cylinder 2 can be rotated, thereby flexibly adjusting the angle of the support plates 4 on both sides to different positions on the left, right, front, back, or side of the support cylinder 2, so as to facilitate practical use. At the same time, bolts can be installed in the bolt holes 5 to fix and securely install the base 1 and the support cylinder 2 on the ground.

[0028] Example 2: Please see Figure 1-6As shown, based on Embodiment 1, the present invention provides a technical solution: the guardrail connecting assembly includes a frame 13, a limiting groove 14, a circular seat 15, a first spring 16, a hinge seat 17, and a rotating rod 18. Frames 13 are slidably disposed within the grooves 9 on both sides, and limiting grooves 14 are provided on the upper and lower inner walls of the frame 13. A circular seat 15 is slidably disposed within the limiting groove 14. A first spring 16 is fixedly connected between the circular seat 15 and the inner wall of the limiting groove 14. The upper and lower... Hinges 17 are fixedly installed on both sides of the first sliding plate 11 at both ends and the upper and lower sides. A rotating rod 18 is rotatably connected between adjacent hinges 17. The net connecting assembly includes a cover plate 19, an inclined block 20, an L-shaped sleeve 21, a limiting slide rod 22, a second spring 23, and a hanging ring 25. Covers 19 are fitted into the openings 10 on both sides. The cover plates 19 on both sides are close to each other. An inclined block 20 and an L-shaped sleeve 21 are symmetrically fixedly connected to the upper and lower ends of one side of each side. The upper and lower ends of the inner walls on both the front and rear sides of the support cylinder 2 are... A limiting slide rod 22 is fixedly connected. An L-shaped sleeve 21 is slidably fitted onto the surface of the limiting slide rod 22 on one side. A second spring 23 is fitted onto the surface of the limiting slide rod 22. Hanging rings 25 are fixedly connected to the sides of the cover plates 19 that are close to each other. The upper and lower ends of the lead screw 7 are rotatably fitted onto the upper and lower inner walls of the support cylinder 2 through bearings. The upper end of the lead screw 7 extends above the support cylinder 2, and a ball 8 is fixedly connected to the upper extension end. The threads of the lead screw 7 on the upper and lower surfaces inside the support cylinder 2 are rotated in different directions. In the opposite configuration, the first sliding plates 11 on the upper and lower sides are rotatably connected to the upper and lower ends of the card frame 13 via hinge seats 17 with rotating rods 18 on their respective sides. The card frame 13 is slidably disposed in the card slots 9 on its respective side. The circular card seats 15 on the upper and lower sides extend into the card frame 13 through the limiting slide grooves 14 on the upper and lower sides. The circular card seats 15 on the upper and lower sides are fixedly connected to the inner wall of the limiting slide groove 14 on their respective sides with first springs 16.

[0029] In this embodiment, a lead screw 7 is rotatably fitted between the upper and lower inner walls of the support cylinder 2, with the upper end of the lead screw 7 extending above the support cylinder 2 and a ball 8 fixedly connected to the upper extension end. This facilitates the rotation and adjustment of the lead screw 7 and enhances its aesthetics. Partition plates 6 are fixedly connected to both the upper and lower sides of the inner wall of the support cylinder 2. First sliding plates 11 are slidably arranged on both sides of the partition plates 6, with the partition plates 6 on opposite sides. The first sliding plates 11 are threaded onto the upper and lower ends of the lead screw 7, with the threads on the upper and lower ends of the lead screw 7 having opposite directions. A retaining frame 13 is slidably arranged in the retaining grooves 9 on both sides of the support cylinder 2. The upper and lower ends of the retaining frame 13 are rotatably connected to the first sliding plates 11 on the upper and lower sides via a hinge seat 17, and a rotating rod 18 is rotatably connected to the first sliding plates 11 on the upper and lower sides. Thus, when the lead screw 7 is rotated, the first sliding plates on the upper and lower sides can be adjusted. The plate 11 is adjusted, which drives the rotating rod 18 to rotate, so that the two side frames 13 can slide out of their respective slots 9 and move away from each other. The upper and lower inner walls of the frame 13 are provided with limiting grooves 14, and a circular card seat 15 is slidably arranged in the limiting groove 14. The ends of the circular card seats 15 on the upper and lower sides extend into the frame 13 and the ends that move away from each other are slidably arranged in the limiting groove 14 on their respective sides. A first spring 16 is fixedly connected between the circular card seat 15 and the inner wall of the limiting groove 14. This makes it easy to install various guardrails by pressing the circular card seat 15 to slide in the limiting groove 14. When the two side frames 13 slide out of their slots 9 and move away from each other, the support cylinders 2 and the base 1 are arranged in an array, which makes it easy to install guardrails in adjacent frames 13. This makes it convenient to use, easy to install, and easy to fold and store.

[0030] Example 3: Please see Figure 1-6 As shown, based on Embodiment 1, the present invention provides a technical solution: each of the two upper and lower inclined blocks 20 on each cover plate 19 is fixedly connected to a hanging ring 25 on the side away from each other, and an L-shaped sleeve plate 21 is provided on the side away from each other of the hanging rings 25 on the upper and lower sides. The side of each inclined block 20 that is close to each other is set with an inclined surface. The openings 10 on both sides are opened between the partition plates 6 on the upper and lower sides. The ends of the second sliding plates 12 on the upper and lower sides that are away from each other are respectively engaged with the inclined surfaces of the inclined blocks 20 fixedly connected to the side of the cover plates 19 that are close to each other and slide in contact with each other.

[0031] In this embodiment, openings 19 are provided on the front and rear sides of the support cylinder 2, and second sliding plates 12 are provided on the upper and lower partition plates 6 close to each other. The second sliding plates 12 are threaded onto the surface of the lead screw 7. Cover plates 19 are provided in the openings 10 on both the front and rear sides. Inclined blocks 20 are fixedly connected to the sides of the cover plates 19 close to each other. The inclined blocks 20 on the upper and lower sides cooperate and slide with the second sliding plates 12 on the upper and lower sides respectively. On the sides of each cover plate 19, hanging rings 25 and L-shaped sleeves 21 are fixedly connected to the inclined blocks 20 on the sides away from each other respectively. The L-shaped sleeves 21 are slidably sleeved on the support cylinder 7. The surface of the limiting slide rod 22, which is fixedly connected to the inner wall of the cylinder 2, is fitted with a second spring 23. When the locking frames 13 on both sides of the rotating screw 7 move away from each other, the upper and lower second slide plates 12 will move away from each other simultaneously. Then, through their cooperation with the inclined block 20, the cover plates 19 on both sides will be pushed away from each other and slide out of the opening 10 to the outside of the support cylinder 2. At the same time, the L-shaped sleeve 21 can compress the second spring 23. When operating in the opposite direction, under the action of the second spring 23, the cover plate 19 and the locking frame 13 will gradually return to their original positions. When each hanging ring 25 slides out of the opening, it is convenient to hang a net on the hanging ring 25 to seal some holes.

[0032] Working Principle: During installation and use, this device has a bearing seat 3 fixedly installed on the lower end face of the support cylinder 2, and a base 1 is rotatably mounted on the bearing seat 3. Support plates 4 are fixedly connected to both sides of the base 1, and bolt holes 5 are provided on the support plates 4. Positioning bolts 24 are arranged in an array between the upper end face of the base 1 and the support cylinder 2. By removing the positioning bolts 24, the relative angle between the base 1 and the support cylinder 2 can be rotated, thereby flexibly adjusting the support plates 4 to different positions on the left, right, front, back, or side of the support cylinder 2 to facilitate practical use. Simultaneously, bolts can be installed in the bolt holes 5 to fix and securely install the base 1 and support cylinder 2 on the ground. A lead screw 7 is rotatably fitted between the upper and lower inner walls of the support cylinder 2, with the upper end of the lead screw 7 extending above the support cylinder 2 and a ball 8 fixedly connected to the upper extension end, which facilitates the rotation and adjustment of the lead screw 7 and enhances its aesthetics. Partition plates 6 are fixedly connected to both the upper and lower sides of the inner wall of the support cylinder 2, and a first sliding plate 11 is slidably set on both sides of the partition plates 6, with the first sliding plate 11 threaded. The screw 7 is fitted onto its upper and lower ends, with the threads on the upper and lower ends of the screw 7 having opposite directions. A retaining frame 13 is slidably mounted in the retaining grooves 9 on both sides of the support cylinder 2. The upper and lower ends of the retaining frame 13 are rotatably connected to the first sliding plates 11 on the upper and lower sides via hinge seats 17, and a rotating rod 18 is rotatably connected to them. Thus, when the screw 7 is rotated, the first sliding plates 11 on the upper and lower sides can be adjusted, causing the rotating rod 18 to rotate, allowing the retaining frames 13 on both sides to slide away from each other in their respective retaining grooves 9. Limiting grooves 14 are provided on the inner walls of both the upper and lower sides of the retaining frame 13, and sliding devices are slidably mounted within the limiting grooves 14. A circular card holder 15 is provided. The ends of the circular card holders 15 on the upper and lower sides extend into the card frame 13, while the ends that are far apart are slidably set in the limiting groove 14 on their respective sides. A first spring 16 is fixedly connected between the circular card holder 15 and the inner wall of the limiting groove 14. This allows for the convenient installation of various guardrails by pressing the circular card holder 15 to slide in the limiting groove 14. When the card frames 13 on both sides slide out of the card groove 9, the support cylinders 2 and the base 1 are arranged in an array, making it convenient to install guardrails in adjacent card frames 13. This makes it convenient to use, easy to install, and easy to fold and store.The support cylinder 2 has openings 19 on both the front and rear sides, and second sliding plates 12 are provided on the upper and lower partition plates 6 close to each other. The second sliding plates 12 are threaded onto the surface of the lead screw 7. Cover plates 19 are provided in the openings 10 on both the front and rear sides. Inclined blocks 20 are fixedly connected to the sides of the cover plates 19 close to each other. The inclined blocks 20 on the upper and lower sides cooperate and slide with the second sliding plates 12 on the upper and lower sides respectively. On the sides of each cover plate 19, hanging rings 25 and L-shaped sleeves 21 are fixedly connected to the inclined blocks 20 on the opposite sides respectively. The L-shaped sleeves 21 are slidably sleeved on the support cylinder 7. The surface of the limiting slide rod 22, which is fixedly connected to the inner wall of the support cylinder 2, is fitted with a second spring 23. This allows the upper and lower second slide plates 12 to move away from each other simultaneously when the adjusting screw 7 moves the two sides of the retaining frame 13 away from each other. This, in turn, through its cooperation with the inclined block 20, pushes the cover plates 19 on both sides away from each other and slides out of the opening 10 to the outside of the support cylinder 2. Simultaneously, the L-shaped sleeve 21 can compress the second spring 23. In the reverse operation, under the action of the second spring 23, the cover plates 19 and retaining frames 13 will gradually return to their original positions.

Claims

1. A safety support device for protecting openings in civil engineering construction, comprising a base (1), a support cylinder (2), and a bearing sleeve (3), wherein the bearing sleeve (3) is fixedly installed on the lower end face of the support cylinder (2), the upper end of the base (1) is rotatably fitted onto the outside of the bearing sleeve (3), and support plates (4) are fixedly connected to both the left and right sides of the base (1), characterized in that, A screw rod (7) is rotatably fitted between the upper and lower inner walls of the support cylinder (2). Partition plates (6) are fixedly fitted on both the upper and lower sides of the inner wall of the support cylinder (2). Slots (9) are opened on both the left and right sides of the support cylinder (2), and openings (10) are opened on the front and rear sides. A first sliding plate (11) and a second sliding plate (12) are respectively provided on the side of the partition plates (6) on the upper and lower sides that are far apart and close to each other. The first sliding plate (11) and the second sliding plate (12) are slidably set in the support cylinder (2) and threadedly fitted on the outer side of the screw rod (7). A guardrail connecting component is provided between the slot (9) and the first sliding plate (11), and a net connecting component is provided between the opening (10) and the second sliding plate (12). The guardrail connection assembly includes a frame (13), a limiting groove (14), a circular seat (15), a first spring (16), a hinge seat (17), and a rotating rod (18). The frame (13) is slidably arranged in the groove (9) on both sides, and the upper and lower inner walls of the frame (13) are provided with limiting grooves (14). The circular seat (15) is slidably arranged in the limiting groove (14). The first spring (16) is fixedly connected between the circular seat (15) and the inner wall of the limiting groove (14). The upper and lower ends of each frame (13) and the left and right sides of the first sliding plate (11) on the upper and lower sides are fixedly installed with hinge seats (17). The rotating rod (18) is rotatably connected between adjacent hinge seats (17). The net connecting assembly includes a cover plate (19), an inclined block (20), an L-shaped sleeve plate (21), a limiting slide rod (22), a second spring (23), and a hanging ring (25). The openings (10) on both sides are fitted with cover plates (19). The upper and lower ends of the cover plates (19) on both sides are symmetrically fixedly connected with the inclined block (20) and the L-shaped sleeve plate (21) on one side. The upper and lower ends of the inner walls on both sides of the support cylinder (2) are fixedly connected with the limiting slide rod (22). The L-shaped sleeve plate (21) is slidably fitted on the surface of the limiting slide rod (22) on one side, and the surface of the limiting slide rod (22) is fitted with the second spring (23). The upper and lower ends of the cover plates (19) on both sides are fixedly connected with the hanging ring (25) on one side.

2. The safety support device for protecting openings in civil engineering construction according to claim 1, characterized in that, Multiple bolt holes (5) are provided on both sides of the support plate (4). Positioning bolts (24) are fixedly arranged between the upper end face of the base (1) and the lower end face of the support cylinder (2). The lead screw (7) is rotated and fitted in the upper and lower partition plates (6) through the bearing.

3. The safety support device for protecting openings in civil engineering construction according to claim 1, characterized in that, The upper and lower ends of the lead screw (7) are rotatably mounted on the upper and lower inner walls of the support cylinder (2) through bearings, and the upper end of the lead screw (7) extends above the support cylinder (2), and a ball (8) is fixedly connected to the upper extension end. The threads of the upper and lower ends of the lead screw (7) inside the support cylinder (2) are set in opposite directions.

4. A safety support device for protecting openings in civil engineering construction according to claim 1, characterized in that, The first sliding plates (11) on the upper and lower sides are rotatably connected to the upper and lower ends of the card frame (13) via hinge seats (17) on one side, and the card frame (13) is slidably set in the card slot (9) on each side.

5. A safety support device for protecting openings in civil engineering construction according to claim 1, characterized in that, The ends of the circular card holders (15) on the upper and lower sides that are close to each other extend through the limiting slide grooves (14) on the upper and lower sides into the card frame (13), and the sides of the circular card holders (15) on the upper and lower sides that are far apart from each other are respectively fixedly connected with the inner wall of the limiting slide groove (14) on their respective sides by a first spring (16).

6. A safety support device for protecting openings in civil engineering construction according to claim 1, characterized in that, Each of the two inclined blocks (20) on the upper and lower sides of the cover plate (19) is fixedly connected with a hanging ring (25) on the side away from each other, and an L-shaped sleeve plate (21) is provided on the side away from each other of the hanging rings (25) on the upper and lower sides.

7. A safety support device for protecting openings in civil engineering construction according to claim 6, characterized in that, Each of the inclined blocks (20) has an inclined surface on the side that is close to each other.

8. A safety support device for protecting openings in civil engineering construction according to claim 7, characterized in that, The openings (10) on both sides are located between the upper and lower partitions (6). The ends of the second sliding plates (12) on the upper and lower sides that are far apart from each other are respectively connected to the inclined surfaces of the inclined blocks (20) that are fixedly connected to the sides of the cover plates (19) that are close to each other and slide together.

Images