Security device for building construction

Abstract

The present invention relates to the field of construction and discloses a security device for construction, comprising a fixed frame arranged on the construction ground, and also comprising: a crash plate arranged on one side of the fixed frame; a support mechanism, which can be flipped and arranged on a side of the fixed frame away from the crash plate and connected to the crash plate, and when the crash plate is hit, the support mechanism flips along the fixed frame to support and fix the fixed frame; a limiting mechanism, which is arranged on the fixed frame and connected to the crash plate, and is used to limit the installation position of the support mechanism; a fixing mechanism, which is arranged on a side of the fixed frame away from the crash plate, and is used to fix the flipped support mechanism. The present invention can effectively stop a colliding vehicle, and can prevent the vehicle from crashing into the construction site and causing damage to the construction site.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a security device for building construction. Background Art

[0002] Safety and protection are crucial at construction sites. As buildings grow taller and construction becomes more complex, so too do the potential risks they face. These risks include the accidental fall of construction equipment and materials, as well as operator errors. These can pose a threat to personnel and equipment on site.

[0003] Existing equipment has the following shortcomings: Traditional safety protection measures often rely on simple fences and warning signs, which may not provide sufficient protection and support in the face of emergencies. Especially during construction, when unexpected collisions or collapses occur, the lack of effective support and protective devices may lead to serious consequences.

[0004] Therefore, the present application now proposes a security device that can automatically provide support and fixation when hit, and can be easily installed and disassembled, so as to adapt to the complex and changeable environment of the construction site to solve the above-mentioned problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a security device for construction to solve the above-mentioned problem that it may not be possible to provide sufficient protection and support when facing emergencies, especially during the construction process, when an unexpected collision or collapse occurs, the lack of effective support and protection devices may lead to serious consequences.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a security device for construction, comprising a fixed frame arranged on a construction ground, and further comprising:

[0007] an anti-collision plate, arranged on one side of the fixed frame;

[0008] A support mechanism is flippably arranged on a side of the fixed frame away from the anti-collision plate and connected to the anti-collision plate, and when the anti-collision plate is hit, the support mechanism flips along the fixed frame to support and fix the fixed frame;

[0009] a limiting mechanism, provided on the fixing frame and connected to the anti-collision plate, for limiting the installation position of the supporting mechanism;

[0010] The fixing mechanism is arranged on a side of the fixing frame away from the anti-collision plate and is used to fix the supporting mechanism after it is turned over.

[0011] The fixed frame includes a base plate fixed to the upper end of the ground, a column fixed to the upper end of the base plate, and a protective plate fixed between two of the columns. The support mechanism can be flipped and arranged on the protective plate.

[0012] Wherein, a counterweight block is provided on one side of the bottom plate below the anti-collision plate.

[0013] Wherein, a tilted abutment plate for supporting the support mechanism is provided on one side of the protective plate below the support mechanism.

[0014] Wherein, a support member is arranged between the anti-collision plate and the protective plate, and the support member includes a connecting rod arranged on the anti-collision plate and passing through the protective plate and a support block arranged on the side of the connecting rod away from the anti-collision plate, and the part of the connecting rod located between the anti-collision plate and the protective plate is sleeved with a first elastic member.

[0015] In which, the support mechanism includes a mounting block arranged on the protective plate, a support rod arranged between the two mounting blocks, a mounting rod sleeved on the support rod, a limiting plate arranged between the two support rods and a stop plate arranged on the side of the support rod away from the mounting block, the limiting mechanism is connected to the limiting plate, and the stop plate is located above the protective plate.

[0016] In which, a baffle is provided inside the stop plate, and the baffle is obliquely arranged above the anti-collision plate. A mounting groove for installing the baffle is provided on the stop plate, and limit blocks are provided on both sides of the baffle. A limit groove for the limit block to move is provided at the position of the stop plate corresponding to the limit block, and a second elastic member is provided in the part between the limit groove and the limit block. A plug-in plate for limiting the baffle is provided at the upper end of the anti-collision plate, and the plug-in plate is inserted into the baffle, and a slot for fixing the plug-in plate is provided on the baffle.

[0017] Among them, the limiting mechanism includes a rack fixed on the side of the anti-collision plate close to the protective plate, a fixing frame arranged on the protective plate, a connecting shaft arranged on the fixing frame, a gear sleeved on the connecting shaft and a limiting rod fixed at the lower end of the gear for limiting the limiting plate, the rack is meshed with the gear, and a through groove for the rack to move is provided on the protective plate.

[0018] In which, the fixing mechanism includes a side plate fixed on the abutment plate and symmetrically arranged about the support rod, a moving rod passing through the side plate and a wedge-shaped block arranged on the moving rod between the two side plates, a third elastic member is sleeved on the part of the moving rod located between the wedge block and the side plate, and the support rod is arranged in a V shape on the side close to the wedge block.

[0019] Wherein, a fixing groove for placing the stop plate is opened on the ground, and an anti-slip strip is provided on the side of the stop plate that contacts the ground.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention installs the support mechanism at the upper end of the fixed frame, which can prevent falling objects from high altitude during construction from injuring pedestrians. When an accident occurs to a vehicle during driving and collides with the anti-collision plate, the anti-collision plate drives the limiting mechanism to move, and the contact limiting mechanism restricts the support mechanism. The support mechanism can be flipped along the fixed frame, and then the support mechanism and the ground are supported. When the support mechanism moves down to the lowest point, the fixing mechanism can fix the support mechanism so that the support mechanism can firmly support the fixed frame, effectively stop the colliding vehicle, and avoid the vehicle from crashing into the construction site and causing damage to the construction site. The stop plate has a dual protective function, which can not only protect against falling objects from high altitude, but also firmly support the fixed frame when the anti-collision plate is hit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention;

[0023] Figure 2 A schematic cross-sectional view of an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the rear view structure of one embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the support member and the abutment plate in one embodiment of the present invention;

[0026] Figure 5 This is a schematic structural diagram of a limiting mechanism in one embodiment of the present invention;

[0027] Figure 6 This is a structural schematic diagram of an embodiment of the present invention in which a stop plate is located above an anti-collision plate;

[0028] Figure 7 This is a structural diagram of the installation position of the second elastic member in one embodiment of the present invention;

[0029] Figure 8 This is a schematic structural diagram of the rear side of the fixed frame in one embodiment of the present invention;

[0030] Figure 9 This is a schematic structural diagram of a baffle in one embodiment of the present invention;

[0031] Figure 10 A schematic diagram of the structure of a baffle moving inside a stop plate in one embodiment of the present invention;

[0032] Figure 11 This is a schematic structural diagram of a stop plate fixed in a fixing groove in one embodiment of the present invention;

[0033] Figure 12 A schematic structural diagram of the movement of the limiting mechanism when the anti-collision plate collides with an embodiment of the present invention;

[0034] Figure 13 for Figure 8 The enlarged structural diagram of the middle part A;

[0035] Figure 14 for Figure 8 The enlarged structural diagram of the middle part B;

[0036] Figure 15 for Figure 11 Schematic diagram of the structure with the C part enlarged.

[0037] In the figure: 1, ground; 101, fixing groove; 2, fixing frame; 21, column; 22, bottom plate; 221, counterweight; 23, protective plate; 2301, through groove; 231, mounting block; 24, abutment plate; 3, anti-collision plate; 31, plug plate; 32, support member; 321, connecting rod; 322, support block; 323, first elastic member; 4, supporting mechanism; 41, support rod; 42, mounting rod; 43, limit Positioning plate; 44, stop plate; 441, anti-slip strip; 4401, mounting slot; 4402, limiting slot; 45, baffle; 4501, slot; 451, limiting block; 452, second elastic member; 5, fixing mechanism; 51, side plate; 52, moving rod; 53, wedge block; 54, third elastic member; 6, limiting mechanism; 61, fixing frame; 62, connecting shaft; 63, gear; 64, rack; 65, limiting rod. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] See also Figure 1-15 The present invention provides a technical solution: a security device for construction, comprising a fixed frame 2 arranged on a construction ground 1, and further comprising:

[0040] An anti-collision plate 3 is provided on one side of the fixed frame 2;

[0041] The support mechanism 4 is flippably arranged on a side of the fixed frame 2 away from the anti-collision plate 3 and connected to the anti-collision plate 3. When the anti-collision plate 3 is hit, the support mechanism 4 flips along the fixed frame 2 to support and fix the fixed frame 2;

[0042] A limiting mechanism 6, provided on the fixed frame 2 and connected to the anti-collision plate 3, is used to limit the installation position of the supporting mechanism 4;

[0043] The fixing mechanism 5 is provided on a side of the fixing frame 2 away from the anti-collision plate 3 and is used to fix the support mechanism 4 after it has been flipped over.

[0044] It should be noted that, when working, the fixed frame 2 is fixed on the outer ground 1 of the construction site, and one side of the anti-collision plate 3 is kept away from the construction site, and a warning sign is installed on the anti-collision plate 3 to warn passing vehicles, and the supporting mechanism 4 is installed on the upper end of the fixed frame 2, which can prevent falling objects from high altitude during construction from causing injuries to passing pedestrians. When an accident occurs during driving of a vehicle and collides with the anti-collision plate 3, the anti-collision plate 3 drives the limiting mechanism 6 to move, and the contact limiting mechanism 6 restricts the supporting mechanism 4. The supporting mechanism 4 can be flipped along the fixed frame 2, and then the supporting mechanism 4 is supported by the ground 1, and when the supporting mechanism 4 moves down to the lowest point, the fixing mechanism 5 can fix the supporting mechanism 4, so that the supporting mechanism 4 The mechanism 4 can provide a stable support for the fixed frame 2, can effectively stop the colliding vehicle, and can prevent the vehicle from crashing into the construction site and causing damage to the construction site. By setting the anti-collision plate 3, the supporting mechanism 4, the limiting mechanism 6 and the fixing mechanism 5, when the anti-collision plate 3 is hit, the supporting mechanism 4 can be automatically triggered to flip and support, effectively stopping the colliding vehicle, improving the safety protection performance of the construction site, enhancing the stability and reliability of the entire security device, ensuring that it can remain stable when hit, and providing reliable protection for the construction site. The security device adopts a modular design, and the various parts can be installed and disassembled through simple connections and fixations, which is convenient and fast and can adapt to the rapidly changing needs of the construction site.

[0045] In one embodiment, the fixed frame 2 includes a base plate 22 fixed to the upper end of the ground 1, a column 21 fixed to the upper end of the base plate 22, and a protective plate 23 fixed between the two columns 21. The support mechanism 4 can be flipped and set on the protective plate 23.

[0046] This design, see Figure 1-3 The bottom plate 22 is fixed to the upper end of the ground 1, providing a solid foundation for the entire fixed frame 2 and ensuring the stability of the device when subjected to external forces. The column 21 is fixed to the upper end of the bottom plate 22 and serves as a support column of the frame, further enhancing the vertical bearing capacity of the frame. The protective plate 23 is fixed between the two columns 21 to form a continuous protective surface, and also provides an installation platform for the support mechanism 4. This structural design makes the combination of the fixed frame 2 and the support mechanism 4 more flexible and changeable, and can be adjusted and configured according to the specific needs and conditions of the construction site.

[0047] In one embodiment, a counterweight 221 is provided on one side of the bottom plate 22 below the anti-collision plate 3 .

[0048] This design, see Figure 1 ,as well as Figure 2 The addition of the counterweight 221 effectively increases the weight of the entire security device, thereby enhancing its stability on the ground 1. Especially when subjected to external impact or wind load, the counterweight 221 can resist the overturning moment and ensure that the device remains stable. When the anti-collision plate 3 is hit, it will generate a large impact force.

[0049] In one embodiment, a side of the protection plate 23 below the support mechanism 4 is provided with an inclined abutment plate 24 for supporting the support mechanism 4 .

[0050] This design, see Figure 4 ,as well as Figure 11 The abutment plate 24 provides a stable support point for the support mechanism 4. Especially after the support mechanism 4 is flipped into place, the abutment plate 24 can effectively resist the tilting or sliding force that may be generated by the support mechanism 4, ensuring that the support mechanism 4 remains stable. The inclined abutment plate 24 can better adapt to the mechanical distribution of the support mechanism 4 when it is subjected to force, and evenly transfer the supporting force to the protective plate 23 and the ground 1, avoiding local stress concentration and improving the bearing capacity of the entire security device. When the anti-collision plate 3 is hit, the support mechanism 4 needs to be quickly flipped into place to provide support.

[0051] In one embodiment, a support member 32 is provided between the anti-collision plate 3 and the protective plate 23. The support member 32 includes a connecting rod 321 provided on the anti-collision plate 3 and passing through the protective plate 23, and a support block 322 provided on the side of the connecting rod 321 away from the anti-collision plate 3. The portion of the connecting rod 321 located between the anti-collision plate 3 and the protective plate 23 is provided with a first elastic member 323, and the first elastic member 323 is made of a damped spring or elastic pad.

[0052] This design, see Figure 4When the anti-collision plate 3 is hit, the connecting rod 321 will be pushed to move toward the side close to the protective plate 23, and the first elastic member 323 will be squeezed during the movement of the anti-collision plate 3. The elastic characteristics of the first elastic member 323 enable the anti-collision plate 3 to automatically reset after being hit. When the impact force disappears, the first elastic member 323 will release the stored elastic potential energy, pushing the anti-collision plate 3 back to its initial position without manual intervention, thereby improving the automation and ease of use of the security device. During the movement of the anti-collision plate 3, the limiting mechanism 6 will be driven to move, contacting the limiting mechanism 6 to restrict the support mechanism 4.

[0053] In one embodiment, the support mechanism 4 includes a mounting block 231 arranged on the protective plate 23, a support rod 41 arranged between the two mounting blocks 231, a mounting rod 42 arranged on the support rod 41, a limiting plate 43 arranged between the two support rods 41, and a stop plate 44 arranged on the side of the support rod 41 away from the mounting block 231. The limiting mechanism 6 is connected to the limiting plate 43, and the stop plate 44 is located above the protective plate 23.

[0054] This design, see Figure 6-8 The stop plate 44 is located above the protective plate 23, providing an additional protective barrier for the construction site. When a person or object accidentally approaches the dangerous area, the stop plate 44 can play a blocking and warning role, effectively preventing the occurrence of safety accidents. The support rod 41 can rotate on the mounting rod 42, and the limiting mechanism 6 is connected to the limiting plate 43, which can fix the limiting plate 43, so that the stop plate 44 can be installed above the protective plate 23 to play a warning role.

[0055] In one embodiment, a baffle 45 is provided inside the stop plate 44, and the baffle 45 is obliquely arranged above the anti-collision plate 3. A mounting groove 4401 for mounting the baffle 45 is provided on the stop plate 44, and limiting blocks 451 are provided on both sides of the baffle 45. A limiting groove 4402 for the limiting block 451 to move is provided at the position of the corresponding limiting block 451 of the stop plate 44, and a second elastic member 452 is provided in the part between the limiting groove 4402 and the limiting block 451. The upper end of the anti-collision plate 3 is provided with a plug-in plate 31 for limiting the baffle 45, and the plug-in plate 31 is inserted into the baffle 45. A slot 4501 for fixing the plug-in plate 31 is provided on the baffle 45, and the second elastic member 452 is made of a damped spring or elastic pad.

[0056] This design, see Figure 9 ,as well as Figure 10The baffle 45 is tilted and arranged above the anti-collision plate 3, which can protect the upper part of the entire security device and effectively prevent falling objects from high altitude from causing harm to pedestrians and vehicles below the security device. The baffle 45 is pulled out from the inside of the stop plate 44. At this time, the limit block 451 squeezes the second elastic member 452. Then, when the slot 4501 moves to the top of the plug-in plate 31, the plug-in plate 31 is inserted into the inside of the slot 4501 to fix the position of the baffle 45, so that the stop plate 44 and the baffle 45 can prevent falling objects from high altitude during construction. When the anti-collision plate 3 is hit, the plug plate 31 moves to the side close to the stop plate 44, thereby causing the plug plate 31 to be pulled out from the inside of the slot 4501. At this time, the restriction of the plug plate 31 on the baffle 45 is released. At this time, the second elastic member 452 drives the limit block 451 to reset, thereby causing the baffle 45 to be stored inside the stop plate 44, avoiding damage to the baffle 45 when the entire security device is hit. By restricting the baffle 45 through the plug plate 31, the baffle 45 can be installed more firmly, further improving the protection efficiency of the baffle 45.

[0057] In one embodiment, the limiting mechanism 6 includes a rack 64 fixed to the side of the anti-collision plate 3 close to the protective plate 23, a fixing frame 61 arranged on the protective plate 23, a connecting shaft 62 arranged on the fixing frame 61, a gear 63 sleeved on the connecting shaft 62, and a limiting rod 65 fixed at the lower end of the gear 63 for limiting the limiting plate 43. The rack 64 is meshed with the gear 63, and a through groove 2301 for the rack 64 to move is provided on the protective plate 23.

[0058] This design, see Figure 5 、 Figure 12 ,as well as Figure 13 The rack 64 is fixed on the anti-collision plate 3 and meshed with the gear 63. When the anti-collision plate 3 moves, the rack 64 drives the gear 63 to rotate, and then the gear 63 rotates on the connecting shaft 62, so that the limit rod 65 moves out of the limit plate 43, releasing the limit rod 65 from the limit plate 43. Then, under the action of gravity, the stop plate 44 flips downward, and the support rod 41 rotates clockwise along the mounting rod 42, so that the stop plate 44 is supported by the ground 1. The limit mechanism 6 controls the position and state of the support mechanism 4 by limiting the movement of the limit plate 43. When the anti-collision plate 3 is hit, the limit mechanism 6 can ensure that the support mechanism 4 remains stable, effectively preventing the safety protection from failing due to the impact.

[0059] In one embodiment, the fixing mechanism 5 includes a side plate 51 fixed on the abutment plate 24 and symmetrically arranged about the support rod 41, a moving rod 52 passing through the side plate 51, and a wedge block 53 arranged on the moving rod 52 between the two side plates 51. The portion of the moving rod 52 located between the wedge block 53 and the side plate 51 is sleeved with a third elastic member 54. The side of the support rod 41 close to the wedge block 53 is arranged in a V shape, and the third elastic member 54 is made of a damped spring or elastic pad.

[0060] This design, see Figure 14 ,as well as Figure 15 When the top end of the support rod 41 is located at the bottom end of the wedge block 53, the wedge blocks 53 are moved closer to each other under the action of the third elastic member 54, thereby causing the two wedge blocks 53 to clamp and fix the support rod 41 to the inside of the side plate 51, thereby being stably fixed in the predetermined position. This self-locking effect ensures that the support rod 41 is not easily displaced when subjected to external force. The side of the support rod 41 close to the wedge block 53 is V-shaped. This design enables the support rod 41 to better adapt to its shape when in contact with the wedge block 53, driving the wedge block 53 to move laterally on the side plate 51.

[0061] In one embodiment, a fixing groove 101 for placing the stop plate 44 is opened on the ground 1 , and an anti-slip strip 441 is provided on the side of the stop plate 44 that contacts the ground 1 .

[0062] This design, see Figure 6 ,as well as Figure 8 The fixing groove 101 provides a fixed placement position for the stop plate 44, ensuring the stable placement and accurate positioning of the stop plate 44 on the ground 1. This design prevents the stop plate 44 from sliding or shifting during use, thereby improving its reliability and safety. The anti-slip strip 441 is set on the side where the stop plate 44 contacts the ground 1, which increases the friction between the stop plate 44 and the ground 1. This design effectively prevents the stop plate 44 from sliding when subjected to external force. The effect of the anti-slip strip 441 is particularly obvious. The combined use of the fixing groove 101 and the anti-slip strip 441 significantly improves the stability of the stop plate 44 on the ground 1, thereby enhancing the safety of the construction site.

[0063] In addition, if there are descriptions of "first," "second," etc. in the embodiments, such descriptions are for descriptive purposes only and should not be understood as indicating or implying the relative importance of the description or implicitly indicating the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features.

Claims

1. A security device for construction, comprising a fixed frame (2) arranged on a construction ground (1), characterized in that: Also includes: An anti-collision plate (3) is arranged on one side of the fixed frame (2); A support mechanism (4) is flippably arranged on a side of the fixed frame (2) away from the anti-collision plate (3) and connected to the anti-collision plate (3); when the anti-collision plate (3) is impacted, the support mechanism (4) flips along the fixed frame (2) to support and fix the fixed frame (2); A limiting mechanism (6), arranged on the fixed frame (2) and connected to the anti-collision plate (3), for limiting the installation position of the supporting mechanism (4); A fixing mechanism (5) is provided on a side of the fixing frame (2) away from the anti-collision plate (3) and is used to fix the support mechanism (4) after flipping; The support mechanism (4) comprises a stop plate (44): A baffle (45) is provided inside the stop plate (44), and the baffle (45) is tiltedly arranged above the anti-collision plate (3). A mounting groove (4401) for mounting the baffle (45) is provided on the stop plate (44), and limiting blocks (451) are provided on both sides of the baffle (45). A limiting groove (4402) for the limiting block (451) to move is provided on the stop plate (44) at a position corresponding to the limiting block (451), and a second elastic member (452) is provided between the limiting groove (4402) and the limiting block (451). A plug-in plate (31) for limiting the baffle (45) is provided at the upper end of the anti-collision plate (3), and the plug-in plate (31) is inserted into the baffle (45), and a slot (4501) for fixing the plug-in plate (31) is provided on the baffle (45).

2. A security device for construction according to claim 1, characterized in that: The fixed frame (2) comprises a base plate (22) fixed to the upper end of the ground (1), a column (21) fixed to the upper end of the base plate (22), and a protective plate (23) fixed between the two columns (21); the supporting mechanism (4) can be flipped and arranged on the protective plate (23).

3. A security device for construction according to claim 2, characterized in that: A counterweight (221) is provided on one side of the bottom plate (22) below the anti-collision plate (3).

4. A security device for construction according to claim 2, characterized in that: A tilted abutment plate (24) for supporting the support mechanism (4) is provided on one side of the protection plate (23) located below the support mechanism (4).

5. A security device for construction according to claim 2, characterized in that: A support member (32) is provided between the anti-collision plate (3) and the protective plate (23), the support member (32) comprising a connecting rod (321) provided on the anti-collision plate (3) and passing through the protective plate (23), and a supporting block (322) provided on a side of the connecting rod (321) away from the anti-collision plate (3), and a first elastic member (323) is sleeved on a portion of the connecting rod (321) located between the anti-collision plate (3) and the protective plate (23).

6. A security device for construction according to claim 4, characterized in that: The support mechanism (4) comprises a mounting block (231) arranged on the protective plate (23), a support rod (41) arranged between the two mounting blocks (231), a mounting rod (42) sleeved on the support rod (41), a limiting plate (43) arranged between the two support rods (41), and a stop plate (44) arranged on a side of the support rod (41) away from the mounting block (231). The limiting mechanism (6) is connected to the limiting plate (43), and the stop plate (44) is located above the protective plate (23).

7. A security device for construction according to claim 6, characterized in that: The limiting mechanism (6) comprises a rack (64) fixed to a side of the anti-collision plate (3) close to the protective plate (23), a fixing frame (61) arranged on the protective plate (23), a connecting shaft (62) arranged on the fixing frame (61), a gear (63) sleeved on the connecting shaft (62), and a limiting rod (65) fixed to the lower end of the gear (63) for limiting the limiting plate (43), the rack (64) is meshedly connected with the gear (63), and a through groove (2301) for the rack (64) to move is provided on the protective plate (23).

8. The security device for construction according to claim 6, characterized in that: The fixing mechanism (5) comprises a side plate (51) fixed on the abutment plate (24) and symmetrically arranged with respect to the support rod (41), a moving rod (52) passing through the side plate (51), and a wedge block (53) arranged on the moving rod (52) between the two side plates (51), a third elastic member (54) is sleeved on a portion of the moving rod (52) between the wedge block (53) and the side plate (51), and the support rod (41) is arranged in a V-shape on a side close to the wedge block (53).

9. The security device for construction according to claim 7, characterized in that: A fixing groove (101) for placing the stop plate (44) is provided on the ground (1), and an anti-slip strip (441) is provided on the side of the stop plate (44) that contacts the ground (1).

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