Safety protection device for cast-in-place pile foundation pit
By setting up safety protection devices for cast pile foundation pits with foundation support plates and movable protective plates on the outside of the guard casing, the problem of poor stability of traditional devices is solved, and the safety protection of foundation pits and the continuity of construction is achieved.
Patent Information
- Application Number
- CN202421725356.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-22
AI Technical Summary
Traditional foundation pit safety protection devices are poorly stable and not tightly connected, which cannot effectively prevent staff from accidentally falling into the foundation pit, threatening life safety and possibly causing structural damage.
A safety protection device for the cast pile foundation pit including foundation support plate, movable protective plate and anchor nails is designed. It is fixed to the outside of the guard casing by anchor nails. The movable protective plate can be adjusted to open and close, forming a complete protective surface, enhancing stability and preventing personnel from falling in.
It effectively enhances the stability of the casing, prevents collapse and landslides, ensures the safety of construction personnel, and does not affect the construction progress and prevents damage to the foundation pit structure.
Smart Images
Figure CN223075198U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of foundation pit protection, and particularly relates to a safety protection device for bored pile foundation pits. Background Technique
[0002] During the construction of bored cast-in-place piles, after the top of the pile is excavated, in order to ensure the safety of subsequent drilling operations, a casing is set at the pile opening. Its main purpose is to prevent the collapse of the pile foundation during operation, and at the same time guide the drill to keep coaxial with the casing for accurate drilling. As the foundation pit is excavated deeper, the exposed surface of the foundation pit gradually expands. At this time, preventing unauthorized personnel from entering the foundation pit by mistake becomes the key to ensuring construction safety.
[0003] Traditional foundation pit safety protection devices mostly use steel pipes or wooden squares to simply be erected on the casing. This simple erection method not only has poor stability, but also due to the loose connection between materials, there are obvious gaps between the protection devices, which cannot effectively prevent workers from accidentally falling into the foundation pit, thereby threatening their lives and may cause accidental damage to the foundation pit structure. Content of the Utility Model
[0004] In order to make up for the above deficiencies, the utility model provides a safety protection device for bored pile foundation pits to solve the above problems.
[0005] The utility model is realized as follows:
[0006] A safety protection device for bored pile foundation pits includes a base support plate. A central hole is opened at the top of the base support plate. A convex ring is arranged along the edge of the central hole at the top of the base support plate. Installation parts are symmetrically arranged on both sides of the top of the base support plate. A plurality of anchor holes are opened at the top of the base support plate. Anchor pins are inserted into the anchor holes. A movable protection plate is arranged on the installation parts. The movable protection plate includes a lock and a fan-shaped protection plate. A connecting head is arranged on the top of the fan-shaped protection plate near one side of the arc edge. The connecting head is movably arranged on the lock.
[0007] In an embodiment of the utility model, the installation part includes an installation seat, and the installation seat is fixed on the base support plate by bolts.
[0008] In an embodiment of the utility model, the lock is fixedly arranged on the top of the installation seat. One side of the lock has a connecting arm extending outwards. A movable groove is arranged at the top of the connecting arm.
[0009] In an embodiment of the present utility model, the connector includes a bolt fixedly connected to the top of the sector-shaped protective plate. A lower clip and an upper clip are respectively arranged on the bolt. Two nuts are arranged on the bolt. The lower clip and the upper clip are located between the two nuts. After the bolt penetrates through the bottom of the movable groove, the lower clip abuts against the bottom of the connecting arm through the nut, and the upper clip abuts against the top of the connecting arm through the nut.
[0010] In an embodiment of the present utility model, a plurality of through holes are further formed at the top of the sector-shaped protective plate.
[0011] In an embodiment of the present utility model, when the two movable protective plates are closed, the circular surface formed by the two sector-shaped protective plates completely covers and abuts against the top of the convex ring.
[0012] In an embodiment of the present utility model, the anchor bolt is a screw-in type anchor bolt, the bottom of which is a spiral structure, and a rotating handle is arranged at the top. A limiting piece is arranged on one side of the side wall of the screw-in type anchor bolt close to the rotating handle.
[0013] In an embodiment of the present utility model, the thread diameter of the spiral structure gradually increases from bottom to top.
[0014] The beneficial effects of the present utility model are as follows: The device protects the periphery of the casing through the foundation support plate, effectively enhancing the stability of the casing structure, preventing landslides and collapses during the excavation and use of the foundation pit, thereby protecting the safety of construction workers and the facilities inside the foundation pit; the design of the movable protective plate enables the two sector-shaped protective plates to be closed during non-operation periods of the foundation pit, forming a complete circular protective surface that covers the top of the convex ring, effectively preventing construction workers from accidentally falling into the foundation pit and ensuring their life safety. At the same time, during the operation period, the progress will not be delayed. By adjusting it perpendicular to the foundation support plate through the buckle, construction can start quickly. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a schematic structural diagram of the cast-in-place pile foundation pit safety protection device provided by the embodiment of the present utility model;
[0017] Figure 2 It is a schematic structural diagram of the foundation support plate provided by the embodiment of the present utility model;
[0018] Figure 3 Structural schematic diagram of the movable protective plate provided by the embodiment of the present utility model;
[0019] Figure 4 For Figure 3 Structural schematic diagram of the position A in
[0020] Figure 5 Structural schematic diagram of another embodiment of the anchor bolt provided by the embodiment of the present utility model.
[0021] In the figure: 10, base support plate; 11, central hole; 12, convex ring; 13, anchor hole; 14, installation part; 1401, installation seat; 20, movable protective plate; 21, lock; 2101, connecting arm; 2102, movable slot; 22, sector-shaped protective plate; 23, connecting head; 2301, bolt; 2302, upper clamping piece; 2303, lower clamping piece; 30, anchor bolt; 31, spiral structure; 32, limiting piece; 33, rotating handle. Specific embodiments
[0022] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0023] Therefore, the detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the present utility model claimed, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0024] Such as Figures 1-3As shown in the figure, the utility model provides a safety protection device for a cast-in-place pile foundation pit, which includes a base support plate 10. A central hole 11 is provided at the top of the base support plate 10. A convex ring 12 is arranged along the edge of the central hole 11 at the top of the base support plate 10. Installation parts 14 are symmetrically arranged on both sides of the top of the base support plate 10. A number of anchor holes 13 are provided at the top of the base support plate 10. Anchor nails 30 are inserted into the anchor holes 13. An active protection plate 20 is arranged on the installation part 14. The active protection plate 20 includes a lock catch 21 and a sector protection plate 22. A connection head 23 is arranged on one side of the top of the sector protection plate 22 close to the arc edge. The connection head 23 is movably arranged on the lock catch 21. During the construction process, after the casing for preventing collapse is set up, the protection device is arranged outside the casing, and at the same time, it is fixed to the ground by using the anchor nails 30. The active protection plate 20 at its top can realize the protection of the foundation pit. The active protection plate 20 can be closed or opened according to the actual situation, which not only does not affect the normal construction of the foundation pit, but also can prevent the staff from accidentally falling into the foundation pit and threatening their lives, and can also ensure the structural integrity of the top of the foundation pit.
[0025] As Figure 2 shown, the installation part 14 includes an installation seat 1401. The installation seat 1401 is fixed on the base support plate 10 by bolts 2301. The lock catch 21 is fixedly arranged at the top of the installation seat 1401. One side of the lock catch 21 has a connecting arm 2101 extending outwards. An activity groove 2102 is arranged at the top of the connecting arm 2101.
[0026] As Figures 3-4 shown, the connection head 23 includes bolts 2301 fixedly connected to the top of the sector protection plate 22. Lower clamping pieces 2303 and upper clamping pieces 2302 are respectively arranged on the bolts 2301. Two nuts are arranged on the bolts 2301. The lower clamping pieces 2303 and the upper clamping pieces 2302 are located between the two nuts. After the bolts 2301 penetrate from the bottom of the activity groove 2102, the lower clamping pieces 2303 are in contact with the bottom of the connecting arm 2101 through the nuts, and the upper clamping pieces 2302 are in contact with the top of the connecting arm 2101 through the nuts, and finally it is fixed on the activity groove 2102. Specifically, the position of the connection head 23 on the activity groove 2102 can be adjusted according to the actual size of the central hole 11 and the position of the installation part 14, so as to finally adjust the position of the sector protection plate 22, make the two sector protection plates 22 fit more tightly, and avoid larger gaps.
[0027] In this embodiment, a number of through holes are provided at the top of the sector protection plate 22. The through holes are provided to facilitate the staff to quickly check the situation inside the foundation pit and increase the convenience of inspection.
[0028] In this embodiment, when the two active protection plates 20 are closed, the circular surface formed by the two sector protection plates 22 completely covers and contacts the top of the convex ring 12.
[0029] In one embodiment, the anchor pin 30 is a direct insertion structure, which is inserted into the ground from the top of the anchor hole 13, and the nail head at its top abuts against the top of the base support plate 10, thereby fixing the safety protection device on the outside of the casing.
[0030] In another embodiment, as Figure 5 shown, the anchor pin 30 is a screw-in anchor pin 30, the bottom of which is a spiral structure 31, and a rotating handle 33 is arranged at its top. A limiting piece 32 is arranged on one side of the side wall of the screw-in anchor pin 30 close to the rotating handle 33. During use, the screw-in anchor pin 30 is screwed into the ground by hand-twisting the rotating handle 33 until the limiting piece 32 abuts against the top of the base support plate 10. Since the ordinary anchor pin 30 does not have the characteristic of anti-pulling, it is easy to pull up the safety protection device from the vertical direction when encountering an external force, while the screw-in anchor pin 30 can make up for this point, reducing the possibility of it being pulled out by an external force. At the same time, the rotating handle 33 also avoids the staff from carrying extra tools (such as hammers), increasing its portability.
[0031] In this embodiment, the thread diameter of the spiral structure 31 increases successively from the bottom upwards. This kind of thread structure from small to large makes it more labor-saving for the staff to rotate the anchor pin 30.
[0032] Specifically, the working principle of the cast-in-place pile foundation pit safety protection device: Place the safety protection device on the outside of the casing so that the central hole 11 is coaxial with the casing. At this time, screw the screw-in anchor pin 30 into the ground from the anchor hole 13 until the limiting piece 32 abuts against the base support plate 10, thereby forming a fixation with the ground. At this time, the opening and closing of the sector-shaped protection plate 22 can be controlled through the handle on the lock 21. When construction is required, pull the handle outwards to make the sector-shaped protection plate 22 keep in the vertical direction with the base support plate 10, so that the drilling rig equipment has no obstruction in the vertical direction of the foundation pit. When not in construction, close the two sector-shaped protection plates 22 so that they abut against the top of the convex ring 12, thereby completely covering the upper part of the casing. Through the above structure, the problems of poor stability in the construction of the existing protection device, poor connection tightness, and the inability to effectively prevent the staff from accidentally falling into the foundation pit, thereby threatening their lives and causing damage to the foundation pit structure, are solved.
[0033] The above further describes the present utility model with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as a limitation on the essence and scope of the present utility model. Various modifications made by those of ordinary skill in the art to the above embodiments after reading this specification all fall within the scope protected by the present utility model.
Claims
1. A safety protection device for a cast-in-place pile foundation pit, characterized in that, It includes a base support plate (10). A central hole (11) is provided at the top of the base support plate (10). A convex ring (12) is arranged along the edge of the central hole (11) at the top of the base support plate (10). Mounting parts (14) are symmetrically arranged on both sides of the top of the base support plate (10). A number of anchor holes (13) are provided at the top of the base support plate (10). Anchor pins (30) are inserted into the anchor holes (13). A movable protection plate (20) is arranged on the mounting parts (14). The movable protection plate (20) includes a lock catch (21) and a sector protection plate (22). A connection head (23) is arranged on one side of the top of the sector protection plate (22) close to the arc edge. The connection head (23) is movably arranged on the lock catch (21).
2. The safety protection device for the cast-in-place pile foundation pit according to claim 1, wherein, The mounting part (14) includes a mounting seat (1401). The mounting seat (1401) is fixed on the base support plate (10) by bolts (2301).
3. The safety protection device for a cast-in-place pile foundation pit according to claim 2, characterized in that, The lock catch (21) is fixedly arranged at the top of the mounting seat (1401). One side of the lock catch (21) has a connecting arm (2101) extending outwards. An activity groove (2102) is arranged at the top of the connecting arm (2101).
4. The safety protection device for a cast-in-place pile foundation pit according to claim 3, characterized in that, The connection head (23) includes a bolt (2301) fixedly connected to the top of the sector protection plate (22). A lower clip (2303) and an upper clip (2302) are respectively arranged on the bolt (2301). Two nuts are arranged on the bolt (2301). The lower clip (2303) and the upper clip (2302) are located between the two nuts. After the bolt (2301) penetrates through the bottom of the activity groove (2102), the lower clip (2303) abuts against the bottom of the connecting arm (2101) through the nut, and the upper clip (2302) abuts against the top of the connecting arm (2101) through the nut.
5. The safety protection device for the cast-in-place pile foundation pit according to claim 4, characterized in that, A number of through holes are further provided at the top of the sector protection plate (22).
6. The safety protection device for a cast-in-place pile foundation pit according to claim 5, characterized in that, When the two movable protection plates (20) are closed, the circular surface formed by the two sector protection plates (22) completely covers the top of the convex ring (12) and abuts against it.
7. The safety protection device for the cast-in-place pile foundation pit according to claim 1, characterized in that, The anchor pin (30) is a screw-in type anchor pin (30). Its bottom is a spiral structure (31). Its top is provided with a rotary handle (33). A limiting piece (32) is arranged on one side of the side wall of the screw-in type anchor pin (30) close to the rotary handle (33).
8. The cast-in-place pile foundation pit safety protection device according to claim 7, characterized in that, The thread diameter of the spiral structure (31) increases successively from bottom to top.