Safety protective fence with lifting function for building construction

Abstract

The invention relates to the technical field of guardrails, and particularly discloses a building construction safety guardrail with a lifting function, which comprises a support rod and a guardrail plate, the guardrail plate comprises a support, a plate I and a plate II, the support rod comprises a rod I, a rod II and a locking assembly, and the two ends of the support rod are respectively hinged to the support and the plate I; the first rod and the second rod slide relatively, the locking assembly is installed between the ends, close to each other, of the first rod and the second rod, the support and the first plate are hinged to each other, and when the support and the first plate are converted from being parallel to being perpendicular to each other, the locking assembly locks the first rod and the second rod, and the first plate is provided with an elastic connecting piece. A locking assembly is installed between the sliding block and the second plate, a locking assembly is installed between the sliding block and the second plate, and a torsional spring is installed between the sliding block and the first plate. When the first plate is slightly impacted, pedestrians or vehicles can be buffered, and when the first plate is impacted by large force, the second plate moves downwards to block the pedestrians or the vehicles.

Description

Technical Field

[0001] The present invention relates to the technical field of guardrails, and in particular to a safety guardrail for construction with a lifting function. Background Art

[0002] During construction, in order to ensure the safety of the construction area, some special construction areas will be surrounded by guardrails. On the one hand, the guardrails serve as a reminder to prevent non-construction personnel from mistakenly entering the construction area and causing danger; on the other hand, they can have a blocking effect to prevent personnel or construction vehicles from falling.

[0003] A Chinese patent document with authorization announcement number CN113833352B discloses a guardrail for construction, which effectively solves the problem of unstable connection between the guardrail and the ground due to interference from external forces during use and the problem of protecting vehicles and people inside the vehicles after the vehicles hit the guardrail; its solution includes a drill rod and a support rod, a baffle is connected between the two support rods, the two support rods correspond to the two drill rods one by one, and the drill rods are radially sealed and slidably connected with a plug rod; after the drill rod of the invention drills vertically into the soil, multiple plug rods in the drill rod are inserted horizontally into the soil, which effectively ensures the stability of the drill rod. When a slower vehicle hits the guardrail, the kinetic energy of the vehicle is absorbed by the spring and converted into elastic potential energy, which plays a buffering role. When a faster vehicle hits the guardrail, after part of the kinetic energy of the vehicle is absorbed, the first rotating plate and the second rotating plate rotate to a certain angle to prevent the vehicle that continues to move forward from causing secondary damage due to flipping, effectively ensuring the safety of vehicles and people.

[0004] In the above technical solution, the first rotating plate and the second rotating plate are rotated at a certain angle to prevent the vehicle from being damaged by rolling over. In actual application, if the vehicle is in a rolling state and moves toward the construction area, the rotating plate can be used to prevent the vehicle from rolling over. However, if the vehicle moves directly and parallelly toward the railing, the impact force is large, and the vehicle may break the railing and then rush into the construction area. The rotating plate cannot reduce the damage to the vehicle and personnel. Summary of the invention

[0005] The present invention provides a safety guardrail for construction with a lifting function, aiming to solve the problem in the related art that when the guardrail is subjected to a large impact force, the guardrail will be broken and cause damage to vehicles and personnel.

[0006] A safety guardrail for construction with a lifting function, comprising: a support rod and a guardrail, the guardrail comprising a bracket, a first board and a second board, the support rod comprising a first rod, a second rod and a locking assembly, the two ends of the support rod are respectively hinged on the bracket and the first board, the first rod and the second rod slide relatively, the locking assembly is installed between the ends of the first rod and the second rod that are close to each other, the bracket and the first board are hinged to each other, and when the bracket and the first board change from being parallel to each other to being perpendicular to each other, the locking assembly locks the first rod and the second rod;

[0007] There is an elastic connecting piece on the plate one, and the end of the rod two close to the guardrail is hinged at the movable end of the elastic connecting piece. Slide blocks are slidably arranged on both sides of the plate two, and a locking assembly is installed between the slider and the plate two to lock the slider and the plate two. The movable end of the locking assembly is connected to the movable end of the elastic connecting piece. An elastic assembly is installed on the top of the plate one to make the plate two and the plate one have a tendency to slide relative to each other. When the angle between the plate two and the plate one changes from a right angle to an acute angle, the movable end of the elastic connecting piece moves a distance so that the locking assembly releases the lock between the slider and the plate two, and a torsion spring is installed between the slider and the plate one.

[0008] The effect is that when installing the guardrail, when pulling plate one to rotate from a horizontal state to a vertical state, the locking assembly fixes rod one and rod two, and a stable triangle is formed between the bracket, plate one and the support rod. After the bracket is fixed, the installation of the guardrail can be completed. When plate one is subjected to a relatively small impact force, plate one deflects toward the bracket, and the elastic connector is compressed and then reset. After the deflection, plate one resets to buffer the pedestrians or vehicles that hit plate one. When plate one is subjected to a large impact force, the deflection of plate one first buffers the pedestrians or vehicles to a certain extent. When the deflection angle of plate one is large, the displacement of the movable end of the elastic connector is large, so that the locking assembly connected to the movable end of the elastic connector releases the lock on the slider and plate two. Plate two moves downward under the thrust applied by the elastic assembly and deflects under the action of the torsion spring. Plate two slides in the opposite direction along the length of the support rod to block pedestrians or vehicles that break through plate one, thereby preventing vehicles or pedestrians from rushing into the construction area and causing injuries.

[0009] Preferably, the locking assembly includes an elastic sheet fixedly arranged on rod one and a slot provided on rod two, and the elastic sheet cooperates with the slot; by setting the locking assembly, when rod one and rod two slide relative to each other, the elastic sheet enters the slot to connect rod one and rod two.

[0010] Preferably, a slot is provided in the radial direction of rod one, and the elastic sheet includes a right-angled triangle block slidably arranged in the slot, and a compression spring 1 is installed between the right-angled triangle block and the slot; when the right-angled triangle block enters the slot, the right-angled side of the right-angled triangle block abuts against the inner wall of the slot, and rod one and rod two no longer slide relative to each other, thereby completing the locking of rod one and rod two.

[0011] Preferably, a push plate extending into the slot is slidably provided on the rod 2 in the radial direction; by providing the push plate, when the guardrail needs to be disassembled, the right-angled triangle block is pressed by the push plate so that the right-angled triangle block can be disengaged from the slot, and the rod 1 and the rod 2 can slide relative to each other and thus push the plate 1 from a vertical state to a horizontal state.

[0012] Preferably, a slideway is provided on plate one, and the elastic connecting member includes a connecting block and a spring, the connecting block is slidably arranged in the slideway, one end of the spring is connected to the connecting block, and the other end is connected to plate one, and one end of rod two is hinged to the connecting block; by providing the elastic connecting member, when plate one is impacted, since rod one and rod two are locked, rod two will push the connecting block to move along the slideway and thereby cushion the impact on plate one.

[0013] Preferably, the locking assembly includes an insert block, a slot, a push slot and a push block, the slot extending from the side of the slider away from the second plate 23 to the second plate, the insert block is slidably arranged in the slot, the push slot is obliquely opened downward from left to right on the insert block, the push block is slidably arranged in the push slot and fixedly connected to the connecting block, the slot is a square slot, and the insert block is a square block; when the first plate is subjected to a large impact, the connecting block moves a large distance in the slideway, the movement of the connecting block causes the push block to move in the push slot and then causes the insert block to slide in the slot, and when the insert block detaches from the second plate, the slider and the second plate are unlocked, and the second plate slides downward, the slot is a square slot, and the insert block is a square block, which can keep the second plate in a vertical state.

[0014] Preferably, mounting rods are fixedly provided on both sides of the top of plate one, and an elastic component is provided on the mounting rods. The elastic component includes a sleeve, a compression spring 2 and a push rod. The sleeve is fixedly provided on the mounting rod, and the push rod is slidably provided in the sleeve. One end of the compression spring 2 is connected to the inner wall of the sleeve, and the other end is connected to the push rod. The lower end of the push rod abuts against the top of plate two. By providing an elastic connecting piece, when plate two and the slider are locked, the compression spring 2 is compressed, and when plate two and the slider are unlocked, the compression spring 2 releases the elastic force and pushes plate two to move downward.

[0015] Preferably, a vertical downward retaining rod is provided on the mounting rod, a retaining groove is provided on the top of the second plate, and the retaining rod cooperates with the retaining groove; when the second plate and the slider are locked, the retaining rod is inserted into the retaining groove to keep the second plate in a horizontal state.

[0016] Preferably, plate two has a protrusion, and when plate two slides relative to plate one, the torsion spring causes plate two to deflect toward the support rod, and the protrusion abuts against the support rod; by setting the protrusion, when plate two deflects under the action of the torsion spring, the protrusion abuts against the support rod, causing plate two to slide along the length direction of the support rod.

[0017] Preferably, at least two mounting holes are provided on the bracket along the length direction; by providing the mounting holes, when the bracket is installed, the bracket is fixed by inserting bolts into the mounting holes.

[0018] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0019] 1. When transporting the guardrail, the bracket, plate 1 and plate 2 are placed horizontally to reduce the transportation volume;

[0020] 2. When installing the guardrail, pull plate 1 or plate 2 to make it perpendicular to the bracket. After fixing the bracket, when plate 1 is perpendicular to the bracket, rod 1 and rod 2 on the support rod connecting plate 1 and the bracket are locked by the locking assembly, forming a triangle between plate 1, the support rod and the bracket, making the installation of the guardrail more stable;

[0021] 3. When the plate 1 is subjected to a small impact force, the plate 1 deflects toward the bracket at a certain angle, the movable end of the elastic connector moves a short distance, and the locking assembly does not release the lock between the slider and the plate 2, which plays a certain buffering role for pedestrians or vehicles that hit the plate 1;

[0022] 4. When the impact force applied to plate one is relatively large, the angle of deflection of plate one toward the support rod is relatively large. The distance moved by the movable end of the elastic connection causes the locking assembly to release the lock on plate two and the slider. At this time, plate two moves downward under the push of the elastic assembly, and the slider deflects toward the support rod. The protrusions set on both sides of plate two are against the support rod, and plate two slides downward along the length direction of the support rod. When pedestrians or vehicles break through the buffering limit of plate one and crash into plate one, they are blocked by plate two to prevent pedestrians or vehicles from falling into the construction pit and causing injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a right view structural schematic diagram of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the elastic connecting piece of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the locking assembly of the present invention.

[0027] Figure 5 It is a schematic structural diagram of the locking assembly of the present invention.

[0028] Figure 6 It is a schematic structural diagram of the elastic component of the present invention.

[0029] Reference numerals:

[0030] 1. Support rod; 11. Rod 1; 12. Rod 2; 13. Locking assembly; 131. Elastic sheet; 1311. Right-angle triangle block; 1312. Compression spring 1; 132. Slot; 2. Guard plate; 21. Bracket; 22. Plate 1; 23. Plate 2; 24. Slider; 25. Slide; 3. Elastic connector; 31. Slide; 32. Connecting block; 33. Spring; 4. Locking assembly; 41. Insert block; 42. Slot; 43. Pushing slot; 44. Pushing block; 5. Elastic assembly; 51. Mounting rod; 52. Sleeve; 53. Compression spring 2; 54. Pushing rod; 55. Retaining slot; 56. Retaining rod; 6. Torsion spring; 7. Protrusion; 8. Mounting hole; 9. Pushing plate. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] like Figure 1-Figure 6 As shown, a safety guardrail for construction with a lifting function includes a support rod 1 and a guardrail 2; the guardrail 2 is bendable, the support rod 1 is a telescopic rod and is hinged on the guardrail 2. When the guardrail is transported, the guardrail is in a horizontal state to facilitate transportation. At this time, the support rod 1 is in an extended state. When the guardrail 2 is installed, the guardrail is bent, the support rod 1 supports the bent guardrail 2, and the bent end of the guardrail is fixed to the ground to complete the installation of the guardrail.

[0033] The railing 2 includes a bracket 21, a plate 1 22 and a plate 23. The support rod 1 includes a rod 11, a rod 12 and a locking assembly 13. The two ends of the support rod 1 are respectively hinged on the bracket 21 and the plate 1 22. The rod 1 11 and the rod 2 12 slide relative to each other. The locking assembly 13 is installed between the ends of the rod 1 11 and the rod 2 12 that are close to each other. The bracket 21 and the plate 1 22 are hinged to each other. When the bracket 21 and the plate 1 22 change from being parallel to each other to being perpendicular to each other, the locking assembly 13 locks the rod 11 and the rod 2 12.

[0034] When the guardrail is transported, the bracket 21 and the plate 22 are on the same horizontal plane. At this time, the support rod 1 is in an extended state, that is, the rod 11 and the rod 2 12 are far away from each other. When the guardrail is installed, the railing 2 is placed on the ground, and after the bracket 21 is fixed on the ground, the plate 22 is pulled to rotate the plate 22 to a state relatively vertical with the bracket 21. During the rotation of the plate 22, the rod 11 and the rod 2 12 slide relative to each other. When the plate 22 and the bracket 21 are relatively vertical, the locking assembly 13 connects the rod 11 and the rod 2 12 to complete the installation of the guardrail.

[0035] At least two mounting holes are formed on the bracket 21 along the length direction. Expansion screws are driven into the mounting holes to fix the bracket 21 on the ground.

[0036] The locking assembly 13 includes an elastic sheet 131 fixedly arranged on the rod 11 and a slot 132 opened on the rod 2 12. When the plate 1 22 changes from a horizontal state to a vertical state, the rod 11 and the rod 2 12 slide toward each other. When the plate 1 22 changes from a horizontal state to a vertical state, the elastic sheet 131 enters the slot 132, and the rod 1 11 and the rod 2 12 are connected. At this time, the guardrail can be installed.

[0037] A slot is provided in the radial direction of rod 11, and the elastic sheet 131 includes a right-angled triangle block 1311 slidably arranged in the slot, and a compression spring 1312 is installed between the right-angled triangle block 1311 and the slot. When plate 1 22 changes from a horizontal state to a vertical state, rod 11 and rod 2 12 slide relatively, and the right-angled triangle block 1311 enters the slot 132, thereby connecting rod 11 and rod 2 12, and plate 1 22 no longer rotates.

[0038] A push plate 9 extending into the slot 132 is provided on the rod 2 12 for sliding along the radial direction; when the right-angled triangle block 1311 enters the slot 132, the push plate 9 moves toward the outside of the rod 2 12. When the guardrail needs to be disassembled, the push plate 9 pushes the right-angled triangle block 1311 toward the axis of the rod 2 12 to compress the compression spring. After the compression spring is compressed for a certain distance, the right-angled triangle block 1311 can be withdrawn from the slot 132, and the plate 1 22 can be pushed to rotate to a horizontal state, so that the guardrail can be disassembled and transported for next use.

[0039] During construction of a building, pedestrians or vehicles may be injured if they hit the guardrail. If plate 1 22 is subjected to a relatively large impact force, for example, a moving vehicle may hit plate 1 22 and break through the resistance of plate 1 22, thereby causing the vehicle to rush into the construction pit.

[0040] In order to solve the above problems, the board 1 22 of the present invention is provided with an elastic connector 3, the end of the rod 2 12 close to the fence 2 is hinged to the movable end of the elastic connector 3, and the two sides of the board 23 are provided with a slide groove 25, and the slider 24 is slidably arranged in the slide groove 25. A locking component 4 is installed between the slider 24 and the board 23 to lock the slider 24 and the board 23, and the movable end of the locking component 4 is connected to the movable end of the elastic connector 3. An elastic component 5 is installed between the board 1 22 and the board 23, and the slider 24 is slidably arranged in the slide groove 25. A torsion spring 6 is installed between the block 24 and the plate 1 22, and a protrusion 7 is provided on the plate 23; when the impact force on the plate 1 22 is relatively small, the plate 1 22 deflects toward one side of the bracket 21. Since the rod 11 and the rod 2 12 are locked, the moving distance of the movable end of the elastic connecting member 3 is not enough to enable the locking assembly 4 to release the lock of the slider 24 and the plate 2 23. After the plate 1 22 deflects a certain angle, it is reset under the action of the elastic connecting member 3, which is effective for pedestrians who hit the plate 1 22 with little impact force. When the plate 1 22 is subjected to a relatively large impact force, the angle between the plate 1 22 and the bracket 21 changes from a right angle to an acute angle. Since the rod 1 11 and the rod 2 12 are locked, the rod 2 12 pushes the movable end of the elastic connector 3 to move, and the movable end of the elastic connector 3 moves, so that the locking assembly 4 releases the lock on the slider 24 and the plate 2 23, and the plate 2 23 slides downward with the relative slider 24. Since a torsion spring 6 is installed between the slider 24 and the plate 1 22, the torsion spring 6 is The spring 6 is twisted to deflect the plate 23 toward the support rod 1, and the protrusion 7 arranged on the plate 23 slides on the support rod 1. By arranging an elastic component 5 between the rod 1 11 and the rod 2 12, a downward thrust is applied to the rod 2 12 to slide downward, so that the rod 2 12 can slide downward quickly and resist the car or pedestrian rushing towards the foundation pit. The plate 23 slides downward in an inclined manner in accordance with the support rod 1, so as to prevent the plate 23 from hitting the pedestrian or car breaking through the plate 1 22 when sliding downward, thereby causing damage to the pedestrian or car.

[0041] A slideway 31 is provided on the plate 1 22, and the elastic connecting member 3 includes a connecting block 32 and a spring 33. The connecting block 32 is slidably arranged in the slideway 31, one end of the spring 33 is connected to the connecting block 32, and the other end is connected to the plate 1 22, and one end of the rod 2 12 is hinged to the connecting block 32; when the plate 1 22 is subjected to a large impact force, the plate 1 22 deflects toward the bracket 21, and since the rod 1 11 and the rod 2 12 are locked by the locking assembly 13, the rod 2 12 will push the connecting block 32 to slide upward in the slideway 31 and compress the spring 33.

[0042] The locking assembly 4 includes an insert block 41, a slot 42, a push slot 43 and a push block 44. The slot 42 extends from the side of the slider 24 away from the plate 23 to the plate 23. The insert block 41 is slidably arranged in the slot 42. The push slot 43 is opened on the insert block 41 obliquely downward from left to right. The push block 44 is slidably arranged in the push slot 43 and fixedly connected to the connecting block 32. The slot 42 is a square slot and the insert block 41 is a square block. When the plate 1 22 deflects a certain angle toward the bracket 21, the spring 33 is compressed, the connecting block 32 slides upward in the slideway 31 and pulls the push block 44 to slide in the push slot 43, thereby causing the insert block 41 to slide toward the side away from the plate 23 until the insert block 41 is disengaged from the slot 42 on the plate 23. At this time, the plate 23 is out of contact with the slider 24. The slot 42 is a square slot and the insert block 41 is a square block. When the insert block 41 is inserted into the slot 42, the plate 23 is kept in a vertical state.

[0043] Mounting rods 51 are fixedly provided on both sides of the top of plate 1 22, and an elastic component 5 is provided on the mounting rods 51. The elastic component 5 includes a sleeve 52, a compression spring 53 and a push rod 54. The sleeve 52 is fixedly provided on the mounting rod 51, and the push rod 54 is slidably provided in the sleeve 52. One end of the compression spring 53 is connected to the inner wall of the sleeve 52, and the other end is connected to the push rod 54. The lower end of the push rod 54 abuts against the top of plate 23; when plate 23 is in a vertical state, the push rod 54 abuts against the top of plate 23. At this time, the compression spring 53 is compressed, so that the push rod 54 applies a downward pushing force to plate 23. When the locking component 4 releases the lock between the slider 24 and plate 23, the compression spring 53 releases the elastic force and pushes plate 23 to move downward.

[0044] The mounting rod 51 is also provided with a vertical downward retaining rod 56, and a retaining groove 55 is provided at the top of the plate 23, and the retaining rod 56 cooperates with the retaining groove 55; when the compression spring 23 is compressed, the retaining rod 56 is inserted into the retaining groove 55 to assist in keeping the plate 23 in a vertical state. After the locking assembly 4 releases the lock between the slider 24 and the plate 23, the push rod 54 pushes the plate 23 to move downward until the plate 23 is out of contact with the retaining rod 56, and the slider 24 is deflected toward the support rod 1 under the action of the torsion spring 6, and the slide grooves 25 on both sides of the plate 23 slide in the slider 24, and the protrusions 7 on both sides of the plate 23 are against the support rod 1, so that the plate 23 slides along the length direction of the support rod 1. When the impact force of pedestrians or vehicles on the plate 1 22 is large and breaks the plate 1 22, the pedestrians or vehicles are prevented from rushing into the foundation pit and causing injuries under the obstruction of the plate 23.

[0045] Working principle of the present invention:

[0046] When transporting the guardrail, the bracket 21, the plate 1 22 and the plate 23 are all placed horizontally to reduce the transportation volume. When installing the guardrail, pull the plate 1 22 or the plate 23 to make it perpendicular to the bracket 21. After fixing the bracket 21, when the plate 1 22 is perpendicular to the bracket 21, the rod 1 11 and the rod 2 12 on the support rod 1 connecting the plate 1 22 and the bracket 21 are locked by the locking assembly 13, and the installation of the guardrail is completed at this time; when the plate 1 22 is subjected to a small impact force, the plate 1 22 deflects toward the bracket 21 by a certain angle, and the movable end of the elastic connector 3 moves a short distance. The locking assembly 4 does not release the lock between the slider 24 and the plate 23, and the impact on the The plate 22 has a certain buffering effect on pedestrians or vehicles. When the impact force applied to the plate 22 is relatively large, the angle of deflection of the plate 22 toward the support rod 1 is relatively large. The distance moved by the movable end of the elastic connection causes the locking component 4 to release the lock of the plate 23 and the slider 24. At this time, the plate 23 moves downward under the push of the elastic component 5, and the slider 24 deflects toward the support rod 1. The protrusions 7 set on both sides of the plate 23 are against the support rod 1, and the plate 23 slides downward along the length direction of the support rod 1. When pedestrians or vehicles break through the buffering limit of the plate 22 and hit the plate 22, they are blocked by the plate 23 to prevent the pedestrians or vehicles from falling into the construction pit and causing injuries.

[0047] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A safety guardrail for construction with lifting function, comprising: The support rod (1) and the guardrail (2) are characterized by: The guardrail (2) comprises a bracket (21), a plate 1 (22) and a plate 2 (23); the support rod (1) comprises a rod 1 (11), a rod 2 (12) and a locking assembly (13); the two ends of the support rod (1) are respectively hinged on the bracket (21) and the plate 1 (22); the rod 1 (11) and the rod 2 (12) slide relative to each other; the locking assembly (13) is installed between the ends of the rod 1 (11) and the rod 2 (12) that are close to each other; the bracket (21) and the plate 1 (22) are hinged to each other; when the bracket (21) and the plate 1 (22) change from being parallel to each other to being perpendicular to each other, the locking assembly (13) locks the rod 1 (11) and the rod 2 (12); The first plate (22) has an elastic connecting member (3), the end of the second rod (12) close to the guardrail (2) is hinged to the movable end of the elastic connecting member (3), sliders (24) are slidably arranged on both sides of the second plate (23), a locking assembly (4) is installed between the slider (24) and the second plate (23) to lock the slider (24) and the second plate (23), the movable end of the locking assembly (4) is connected to the movable end of the elastic connecting member (3), the top of the first plate (22) is installed with an elastic assembly (5) so that the second plate (23) and the first plate (22) have a tendency to slide relative to each other, when the angle between the second plate (23) and the first plate (22) changes from a right angle to an acute angle, the movable end of the elastic connecting member (3) moves a certain distance so that the locking assembly (4) releases the locking between the slider (24) and the second plate (23), and a torsion spring (6) is installed between the slider (24) and the first plate (22).

2. The construction safety guardrail with lifting function according to claim 1 is characterized in that: The locking assembly (13) comprises an elastic sheet (131) fixedly arranged on the first rod (11) and a clamping groove (132) provided on the second rod (12); the elastic sheet (131) cooperates with the clamping groove (132).

3. The construction safety guardrail with lifting function according to claim 2 is characterized in that: A slot is provided in the radial direction of the rod one (11); the elastic sheet (131) comprises a right-angled triangular block (1311) slidably arranged in the slot; and a compression spring one (1312) is installed between the right-angled triangular block (1311) and the slot.

4. The safety guardrail for construction with lifting function according to claim 2 is characterized in that: A push plate (9) is slidably arranged on the second rod (12) in a radial direction and extends into the clamping groove (132).

5. The construction safety guardrail with lifting function according to claim 1, characterized in that: A slideway (31) is provided on the plate one (22). The elastic connecting member (3) comprises a connecting block (32) and a spring (33). The connecting block (32) is slidably arranged in the slideway (31). One end of the spring (33) is connected to the connecting block (32) and the other end is connected to the plate one (22). One end of the rod two (12) is hinged to the connecting block (32).

6. The construction safety guardrail with lifting function according to claim 4 is characterized in that: The locking assembly (4) comprises an insert block (41), a slot (42), a push groove (43) and a push block (44); the slot (42) penetrates from a side of the slider (24) away from the second plate (23) to the second plate (23); the insert block (41) is slidably arranged in the slot (42); the push groove (43) is obliquely provided downward from left to right on the insert block (41); the push block (44) is slidably arranged in the push groove (43) and is fixedly connected to the connection block (32); the slot (42) is a square slot, and the insert block (41) is a square block.

7. The construction safety guardrail with lifting function according to claim 1 is characterized in that: Mounting rods (51) are fixedly arranged on both sides of the top of the first plate (22), and the elastic component (5) is arranged on the mounting rod (51). The elastic component (5) comprises a sleeve (52), a second compression spring (53) and a push rod (54). The sleeve (52) is fixedly arranged on the mounting rod (51), and the push rod (54) is slidably arranged in the sleeve (52). One end of the second compression spring (53) is connected to the inner wall of the sleeve (52), and the other end is connected to the push rod (54). The lower end of the push rod (54) abuts against the top of the second plate (23).

8. The construction safety guardrail with lifting function according to claim 7 is characterized in that: The mounting rod (51) is also provided with a retaining rod (56) extending vertically downwards. The top of the second plate (23) is provided with a retaining groove (55), and the retaining rod (56) is matched with the retaining groove (55).

9. The construction safety guardrail with lifting function according to claim 1, characterized in that: The second plate (23) has a protrusion (7). When the second plate (23) and the first plate (22) slide relative to each other, the torsion spring (6) causes the second plate (23) to deflect toward the support rod (1), and the protrusion (7) abuts against the support rod (1).

10. The safety guardrail for construction with lifting function according to any one of claims 1 to 9, characterized in that: At least two mounting holes (8) are formed on the bracket (21) along the length direction.

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