Protective device for building engineering construction safety

Abstract

The invention relates to the technical field of construction platform protection, in particular to a building engineering construction safety protection device which comprises a first vertical rod and a second vertical rod, an intercepting rope is arranged between the first vertical rod and the second vertical rod, and the first vertical rod and the second vertical rod are rotationally connected with adjusting rods; mounting bases are arranged at the bottom of the first vertical rod and the bottom of the second vertical rod, lead screws are slidably connected to the mounting bases in a penetrating mode, and fixing parts are arranged on the lead screws located below the mounting bases in a threaded penetrating mode. During installation, the hexagonal cap is rapidly rotated through the bolt electric wrench to enable the installation base and the fixing ring to rapidly clamp the construction platform, when the clamping force applied to the construction platform by the installation base and the fixing ring is increased to a set value, namely, the rotation resistance of the lead screw is large at the moment, and the second key block is automatically separated from the key groove; at the moment, the adjusting rod rotates and does not drive the lead screw to rotate, and the situation that the bolt electric wrench, the lead screw, the fixing ring and other components are damaged when the bolt electric wrench rotates at a high speed and the lead screw continues to rotate forcibly is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of construction platform protection, and in particular to a protective device for construction safety of building engineering.

[0002] Building construction refers to the production activities in the implementation stage of engineering construction. It is the construction process of various buildings. It can also be said to be the process of turning various lines on the design drawings into physical objects at designated locations. It includes foundation engineering construction, main structure construction, roof engineering construction, decoration engineering construction, etc.

[0003] Safety management during construction is extremely important. Fences and warning signs should be set up at the construction site, and all personnel must receive training and assessment on construction safety and fire protection knowledge before entering the construction site. During the construction process, operating procedures should be strictly followed and no illegal operations should be performed. In addition, the machinery, electrical equipment, safety protection devices, etc. at the construction site must also be complete and reliable to ensure the safety of construction personnel.

[0004] Construction platform protection is an important measure to ensure the safety of workers working at heights. Most of the protection methods in the existing technology are to set up protective fences on the edge of the construction platform to prevent workers or objects from falling; the guardrails must be installed at a certain distance from the platform surface to facilitate walking and working.

[0005] Chinese patent number CN213418543U discloses a construction engineering protection device, including several installation components, a guardrail rod is connected between every two installation components, the installation components include a first clamping plate, a second clamping plate and a support rod, the upper surface of the first clamping plate is fixedly connected to a threaded rod, the threaded rod is threadedly connected to a locking piece, the second clamping plate is slidably arranged on the threaded rod and is located between the first clamping plate and the locking piece, the upper surface of the second clamping plate is fixedly connected to a positioning sleeve for installing the support rod, the support rod is arranged in the positioning sleeve, the free end of the support rod is symmetrically provided with a connecting sleeve, and connecting rods that can be inserted into the connecting sleeve are symmetrically fixedly connected at both ends of the guardrail rod. The purpose of this utility model is to solve the problem of cumbersome disassembly and assembly of traditional guardrails used for construction engineering protection during use.

[0006] When the device is in use, the hexagonal nut is screwed with a wrench to bring the first clamping plate and the second clamping plate closer to each other, thereby clamping the floor slab to achieve installation of the device.

[0007] In the prior art, in order to improve installation efficiency, workers sometimes use an electric bolt wrench to drive bolts or nuts to rotate at high speed to achieve the purpose of quick installation. However, during the installation process of most construction protection devices in the prior art, it is difficult to control the tightening force of bolts and nuts, especially when the electric bolt wrench is working at high speed. After the bolts and nuts are tightened, continuing to force the bolts or nuts to rotate can easily cause damage to the electric bolt wrench and stripping of the bolts or nuts. Summary of the invention

[0008] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a protective device for construction safety of a building project to solve the above problems.

[0009] In order to achieve the above object, the technical solution adopted by the present invention is: A protective device for construction safety of a building engineering project comprises a first upright pole and a second upright pole, an interception rope is arranged between the first upright pole and the second upright pole, an adjusting rod is rotatably connected to the first upright pole and the second upright pole; a mounting base is arranged at the bottom of the first upright pole and the second upright pole, a screw rod is slidably connected through the mounting base, a fixing ring is threadedly passed through the screw rod below the mounting base, a locking block is arranged on the outer surface of the fixing ring, a connecting ring is slidably connected to the screw rod below the mounting base through a key, the bottom end of the adjusting rod is slidably connected to the connecting ring through a key, the adjusting rod and the screw rod are coaxially arranged with the connecting ring, and a hexagonal cap is arranged at the top end of the adjusting rod; a construction platform is also included, and a positioning groove is arranged at the bottom of the construction platform; A reinforcing rib is arranged on the top of the mounting base, and the reinforcing rib is located below the connecting ring. Springs are installed between the first vertical pole and one of the mounting bases and between the second vertical pole and the other mounting base.

[0010] Preferably, the bottom of the mounting base is provided with an anti-slip surface, and the bottom end of the screw rod is provided with a limiting cap.

[0011] Preferably, the construction platform is provided with a through hole, which consists of a circular hole and a give-way groove, the circular hole is connected to the inside of the give-way groove, the fixing ring matches the circular hole, the locking block matches the give-way groove, the circular hole is connected to the inside of the positioning groove, and the locking block matches the positioning groove.

[0012] Preferably, a slide groove is provided at the bottom end of the outer surface of the first upright pole and the bottom end of the outer surface of the second upright pole, the cross section of the reinforcing rib is a right-angled trapezoid, the right-angled surface of the reinforcing rib fits with the inner wall of the slide groove, and the reinforcing rib slides in cooperation with the slide groove.

[0013] Preferably, the first vertical pole is provided with more than two winding grooves, the winding groove is rotatably connected with a winding drum, the intercepting rope is wound around the winding drum, one end of the intercepting rope passes through the first vertical pole and a hook is provided at the end thereof.

[0014] Preferably, a mounting groove is provided in the first vertical rod, and the bottom end of the slide groove is connected to the interior of the mounting groove; the plurality of winding grooves are coaxially connected with the adjusting rod, and the bottom end of the adjusting rod penetrates into the interior of the mounting groove; the adjusting rod coaxially penetrates the winding drum, and a volute spring is provided on the outer surface of the adjusting rod, a protrusion is fixedly connected to the outer end of the volute spring, and a plurality of grooves are provided on the inner wall of the winding drum, and the protrusions are engaged with the grooves.

[0015] Preferably, a first key block is provided on the adjusting rod located in the installation groove, the top end of the screw rod penetrates into the interior of the installation groove, a second key block is provided on the screw rod located in the installation groove, a key slot is provided on the connecting ring, and the first key block and the second key block both slide in cooperation with the key slot.

[0016] Preferably, a one-way limiting tooth is provided on the outer surface of the connecting ring, and a non-return tooth is provided on the inner wall of the mounting groove, and one side of the non-return tooth is set as a slope and the slope matches the one-way limiting tooth.

[0017] Preferably, both the first upright pole and the second upright pole are provided with a snap ring, and the hook matches the snap ring.

[0018] The beneficial effects of the present invention are: 1. When the present invention is installed, the hexagonal nut is quickly rotated by the bolt electric wrench to quickly clamp the installation base and the fixing ring on the construction platform. When the clamping force of the installation base and the fixing ring on the construction platform increases to a set value, that is, at this time, the rotation resistance of the screw rod is large, and the second key block is automatically separated from the key slot. At this time, the rotation of the adjusting rod will no longer drive the screw rod to rotate, so as to prevent the bolt electric wrench itself, the screw rod, the fixing ring and other components from being damaged when the screw rod is forced to continue to rotate under high-speed rotation.

[0019] 2. During the use of the present invention, when the impact object hits the interception rope due to an accident, the interception rope first intercepts the impact object with intermittent high force through the setting of the protrusion capable of jumping out of the groove, and gradually reduces the impact force, and then the interception rope performs a hard interception on the impact object. This interception method has a better interception effect; and through the setting of the protrusion capable of jumping out of the groove, while ensuring the interception force of the interception rope, it can prevent the volute spring from being damaged due to excessive compression.

[0020] 3. During the interception process of the present invention, affected by factors such as the shape of the impact object, each interception rope is impacted with a different force, that is, the amount of the interception rope pulled out is different, resulting in different tightness of the interception rope after interception. The device only needs to rotate the adjusting rod counterclockwise, combined with the setting of the protrusion jumping groove, so that the tension on each interception rope can quickly reach the set value. The device is simple and quick to reset the interception rope, which further improves the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is a structural schematic diagram of the installation of the fixing ring of the present invention.

[0023] Figure 3 It is a schematic cross-sectional structural diagram of the first vertical pole of the present invention.

[0024] Figure 4 For the present invention Figure 1 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0025] Figure 5 For the present invention Figure 3 Schematic diagram of the structure with a partial enlargement at point B in the middle.

[0026] Figure 6 It is a schematic structural diagram of the circular hole of the present invention.

[0027] Figure 7 It is a structural schematic diagram of the installation of the winding drum of the present invention.

[0028] Figure 8 It is a structural schematic diagram of the winding groove of the present invention.

[0029] Fig. 9 It is a schematic structural diagram of the connecting ring of the present invention.

[0030] In the attached drawings: 1. first vertical pole; 2. second vertical pole; 3. intercepting rope; 4. adjusting rod; 5. mounting base; 6. screw rod; 7. fixing ring; 8. anti-slip surface; 9. connecting ring; 10. reinforcing rib; 11. spring; 12. locking block; 13. construction platform; 14. circular hole; 15. clearance groove; 16. positioning groove; 17. slide groove; 18. winding groove; 19. winding drum; 20. hook; 21. mounting groove; 22. volute spring; 23. protrusion; 24. groove; 25. first key block; 26. second key block; 27. keyway; 28. one-way limit tooth; 29. ​​check tooth; 30. hexagonal cap; 31. retaining ring; 32. limit cap. DETAILED DESCRIPTION

[0031] The following will refer to Figures 1 to 9 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0032] A protective device for construction safety, such as Figure 1-Figure 3 , Figure 5 and Figure 6As shown, it includes a first upright pole 1 and a second upright pole 2, an interception rope 3 is arranged between the first upright pole 1 and the second upright pole 2, and an adjustment rod 4 is rotatably connected to the first upright pole 1 and the second upright pole 2; a mounting base 5 is arranged at the bottom of the first upright pole 1 and the second upright pole 2, a screw rod 6 is slidably connected through the mounting base 5, a fixing ring 7 is threadedly penetrated on the screw rod 6 below the mounting base 5, a locking block 12 is arranged on the outer surface of the fixing ring 7, and a limiting cap 32 is arranged at the bottom end of the screw rod 6; it also includes a construction platform 13, a perforation is arranged on the construction platform 13, the perforation is composed of a circular hole 14 and a clearance groove 15, the circular hole 14 is connected to the inside of the clearance groove 15, the fixing ring 7 matches the circular hole 14, and the locking block 12 matches the clearance groove 15 A positioning groove 16 is provided at the bottom of the construction platform 13, the circular hole 14 is connected to the inside of the positioning groove 16, and the locking block 12 matches the positioning groove 16; a connecting ring 9 is slidably connected to the screw rod 6 located below the mounting base 5 through a key, the bottom end of the adjusting rod 4 is slidably connected to the connecting ring 9 through a key, the adjusting rod 4 and the screw rod 6 are coaxially arranged with the connecting ring 9, and a hexagonal cap 30 is provided on the top of the adjusting rod 4; when the locking block 12 is engaged with the positioning groove 16, the fixing ring 7 is in a non-rotatable state. At this time, rotating the hexagonal cap 30 can drive the adjusting rod 4 to rotate with the connecting ring 9, and the screw rod 6 rotates to move the screw rod 6 downward with the first vertical rod 1 or the second vertical rod 2, the spring 11 is compressed, and the mounting base 5 and the fixing ring 7 clamp the construction platform 13.

[0033] like Figure 2 , Figure 3 , Figure 5 , Figure 8 and Fig. 9 As shown, a reinforcing rib 10 is provided on the top of the mounting base 5, and the reinforcing rib 10 is located below the connecting ring 9. A slide groove 17 is provided at the bottom end of the outer surface of the first vertical rod 1 and the bottom end of the outer surface of the second vertical rod 2. The cross section of the reinforcing rib 10 is a right-angled trapezoid. The right-angled surface of the reinforcing rib 10 fits with the inner wall of the slide groove 17, and the reinforcing rib 10 and the slide groove 17 are slidably matched. A mounting groove 21 is provided in the first vertical rod 1, and the bottom end of the slide groove 17 is connected to the inside of the mounting groove 21, and the bottom end of the adjusting rod 4 penetrates into the inside of the mounting groove 21. A first key block 25 is provided on the adjusting rod 4 located in the mounting groove 21, and the top end of the screw rod 6 penetrates into the mounting groove 2 1, a second key block 26 is provided on the screw rod 6 located in the installation groove 21, a key groove 27 is provided on the connecting ring 9, and the first key block 25 and the second key block 26 are both slidably matched with the key groove 27; by setting the reinforcing rib 10, the stability of the installation of the first vertical pole 1 and the second vertical pole 2 can be improved. During the downward movement of the first vertical pole 1 or the second vertical pole 2, the reinforcing rib 10 slides along the sliding groove 17. When the reinforcing rib 10 slides to abut the connecting ring 9, the second key block 26 is disengaged from the key groove 27; a spring 11 is installed between the first vertical pole 1 and one of the mounting bases 5 and between the second vertical pole 2 and the other mounting base 5.

[0034] like Figure 1-Figure 4 , Figure 7 and Figure 8 As shown, more than two winding grooves 18 are provided in the first vertical pole 1, and a winding drum 19 is rotatably connected in the winding groove 18, the intercepting rope 3 is wound and matched with the winding drum 19, one end of the intercepting rope 3 passes through the first vertical pole 1 and a hook 20 is provided at its end, and the other end of the intercepting rope 3 is fixedly connected to the outer surface of the winding drum 19; a clamping ring 31 is provided on the first vertical pole 1 and the second vertical pole 2, and the hook 20 matches the clamping ring 31, and an anti-slip surface 8 is provided at the bottom of the mounting base 5. Through the setting of the anti-slip surface 8, the friction between the mounting base 5 and the construction platform 13 is improved, thereby improving the stability of the installation.

[0035] like Figure 7 and Figure 8 As shown, multiple winding grooves 18 are coaxially connected with the adjusting rod 4, and the adjusting rod 4 coaxially penetrates the winding drum 19; the outer surface of the adjusting rod 4 is provided with a spiral spring 22, and the outer end of the spiral spring 22 is fixedly connected with a protrusion 23, and the inner wall of the winding drum 19 is provided with a plurality of grooves 24. When the protrusion 23 and the groove 24 are in the engaged state, the positive rotation of the adjusting rod 4 will cause the spiral spring 22 to store force.

[0036] like Figure 5 and Fig. 9 As shown, a one-way limiting tooth 28 is provided on the outer surface of the connecting ring 9, and a non-return tooth 29 is provided on the inner wall of the mounting groove 21. One side of the non-return tooth 29 is set as an inclined surface and the inclined surface matches the one-way limiting tooth 28. Through the matching setting of the one-way limiting tooth 28 and the non-return tooth 29, the connecting ring 9 can only rotate in one direction.

[0037] When installing the device, the fixing rings 7 at the bottom of the first upright pole 1 and the second upright pole 2 are respectively aligned with the corresponding circular holes 14, and the locking block 12 is aligned with the makeshift groove 15. Then, the fixing ring 7, the circular hole 14 and the locking block 12 are passed through the construction platform 13 (in the process of passing through the construction platform 13, the installation base 5 will rest on the construction platform 13 and compress the spring 11). Then, the first upright pole 1 and the second upright pole 2 are respectively rotated to make the locking block 12 correspond to the positioning groove 16. At this time, under the action of the restoring force of the spring 11, the locking block 12 will automatically embed into the interior of the positioning groove 16. At this time, the installation base 5 and the locking block 12 clamp the construction platform 13 to achieve the preliminary installation of the first upright pole 1 and the second upright pole 2.

[0038] Pull out multiple intercepting ropes 3 from the winding groove 18 (at the same time, the corresponding winding drum 19 rotates clockwise and the spiral spring 22 accumulates force), so that the hook 20 is connected with the corresponding clamping ring 31, thereby completing the arrangement of the intercepting ropes 3 between the first vertical pole 1 and the second vertical pole 2.

[0039] Use an electric bolt wrench to quickly rotate the hexagonal nut 30, so that the adjusting rod 4 rotates with the connecting ring 9 and the screw rod 6 rotates counterclockwise (in the initial state, the first key block 25 and the second key block 26 are both engaged with the key slot 27). Since the locking block 12 is located inside the positioning slot 16, that is, the fixing ring 7 cannot rotate, when the screw rod 6 rotates counterclockwise, the screw rod 6 moves downward with the first vertical pole 1 or the second vertical pole 2, and the compression amplitude of the spring 11 increases, thereby increasing the strength of the installation base 5 and the fixing ring 7 to clamp the construction platform 13; while the adjusting rod 4 drives the screw rod 6 to rotate counterclockwise, it can increase the compression amount of the volute spring 22, thereby increasing the tension on the intercepting rope 3.

[0040] As the adjusting rod 4 continues to rotate, the first vertical rod 1 and the second vertical rod 2 gradually approach the construction platform 13, the compression amount of the spring 11 gradually increases, and the force of the mounting base 5 and the fixing ring 7 to clamp the construction platform 13 continues to increase. At the same time, the reinforcing rib 10 slides in the slide groove 17 and continues to approach the connecting ring 9. When the clamping force of the mounting base 5 and the fixing ring 7 on the construction platform 13 increases to the set value, the reinforcing rib 10 slides to the top of the connecting ring 9 to disengage the second key block 26 from the key groove 27. At this time, the rotation of the adjusting rod 4 will no longer drive the screw rod 6 to rotate, to prevent the screw rod 6 from rotating too much when the clamping force of the mounting base 5 and the fixing ring 7 on the construction platform 13 is too large. The rotation resistance of the screw rod 6 is large, and the screw rod 6 is forced to continue to rotate under high-speed rotation of the bolt electric wrench, resulting in damage to the bolt electric wrench itself, the screw rod 6, the fixing ring 7 and other components.

[0041] Then, the adjusting rod 4 continues to rotate counterclockwise to further increase the compression of the spiral spring 22 and the tension on the interception rope 3, thereby ensuring the interception effect of the interception rope 3. It is worth noting that since the second key block 26 and the key slot 27 have been disengaged, the working load of the electric bolt wrench is reduced at this time, further improving the practicability of the device.

[0042] It should be noted that, in the initial state, the protrusion 23 is engaged with one of the grooves 24. When the compression of the volute spring 22 increases to the point where the protrusion 23 is disengaged from the groove 24, the protrusion 23 will jump into the next adjacent groove 24. When the protrusion 23 jumps out of the groove, it proves that the compression of the volute spring 22 has reached the set value, that is, the tensioning force of the intercepting rope 3 has reached the set value, and the adjustment rod 4 stops rotating.

[0043] It is worth noting that, when the device is actually used, multiple first upright poles 1 can be provided and the hooks 20 on adjacent first upright poles 1 can be connected to the corresponding clamping rings 31 to increase the protection range, thereby further improving the practicality of the device.

[0044] When the impactor hits the intercepting rope 3 due to an unexpected situation, the intercepting rope 3 intercepts the impactor. If the impact force is large, the intercepting rope 3 is gradually drawn out from the winding groove 18, and the winding drum 19 rotates clockwise. The projection 23 can jump out of the groove, and the intercepting rope 3 intermittently intercepts the impactor with high force. While ensuring the intercepting force of the intercepting rope 3, it can prevent the vortex spring 22 from being damaged due to excessive compression. After the intercepting rope 3 is completely drawn out, since one end of the intercepting rope 3 is fixedly connected to the outer surface of the winding drum 19, the intercepting rope 3 rigidly intercepts the impactor.

[0045] It should be noted that, affected by factors such as the shape of the impact object, each interception rope 3 is impacted with a different force, that is, the amount of interception rope 3 pulled out is different, resulting in different tightness of the interception rope 3. In traditional devices, the tightness of the interception rope 3 needs to be adjusted step by step for each interception rope 3, while the present device only needs to rotate the adjusting rod 4 counterclockwise, and the tension on the interception rope 3 will gradually increase, that is, the interception rope 3 will be gradually tightened, and the protrusion 23 can jump into the groove when the adjusting rod 4 is rotated until each protrusion 23 jumps into the groove, that is, the tension on multiple interception ropes 3 reaches the set value, making the resetting operation of the interception rope 3 simple and quick, further improving the practicality of the present device.

[0046] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A protective device for construction safety, comprising a first vertical pole (1) and a second vertical pole (2), wherein an interception rope (3) is arranged between the first vertical pole (1) and the second vertical pole (2), characterized in that: The first vertical rod (1) and the second vertical rod (2) are both rotatably connected to an adjusting rod (4); the bottom of the first vertical rod (1) and the second vertical rod (2) are both provided with a mounting base (5); a screw rod (6) is slidably connected to the mounting base (5); a fixing ring (7) is threadedly passed through the screw rod (6) located below the mounting base (5); a locking block (12) is provided on the outer surface of the fixing ring (7); a connecting ring (9) is slidably connected to the screw rod (6) located below the mounting base (5) via a key; the bottom end of the adjusting rod (4) is slidably connected to the connecting ring (9) via a key; the adjusting rod (4) and the screw rod (6) are both coaxially arranged with the connecting ring (9); and a hexagonal cap (30) is provided at the top end of the adjusting rod (4); a construction platform (13) is also included; a positioning groove (16) is provided at the bottom of the construction platform (13); A reinforcing rib (10) is provided on the top of the mounting base (5), and the reinforcing rib (10) is located below the connecting ring (9). A spring (11) is installed between the first vertical pole (1) and one of the mounting bases (5), and between the second vertical pole (2) and the other mounting base (5).

2. A protective device for construction safety according to claim 1, characterized in that: The bottom of the mounting base (5) is provided with an anti-slip surface (8), and the bottom end of the screw rod (6) is provided with a limiting cap (32).

3. A protective device for construction safety according to claim 2, characterized in that: The construction platform (13) is provided with a perforation, the perforation consisting of a circular hole (14) and a clearance groove (15), the circular hole (14) is connected to the inside of the clearance groove (15), the fixing ring (7) matches the circular hole (14), the locking block (12) matches the clearance groove (15), the circular hole (14) is connected to the inside of the positioning groove (16), and the locking block (12) matches the positioning groove (16).

4. A protective device for construction safety according to claim 1, characterized in that: The bottom ends of the outer surfaces of the first upright pole (1) and the second upright pole (2) are both provided with a slide groove (17); the cross section of the reinforcing rib (10) is a right-angled trapezoid; the right-angled surface of the reinforcing rib (10) fits with the inner wall of the slide groove (17); and the reinforcing rib (10) and the slide groove (17) are slidably matched.

5. A protective device for construction safety according to claim 4, characterized in that: The first vertical pole (1) is provided with more than two winding grooves (18), the winding groove (18) is rotatably connected with a winding drum (19), the intercepting rope (3) is wound around the winding drum (19), one end of the intercepting rope (3) passes through the first vertical pole (1) and a hook (20) is provided at the end thereof.

6. A protective device for construction safety according to claim 5, characterized in that: The first vertical rod (1) is provided with a mounting groove (21), and the bottom end of the slide groove (17) is connected to the inside of the mounting groove (21); the plurality of winding grooves (18) are coaxially connected with the adjusting rod (4), and the bottom end of the adjusting rod (4) penetrates into the inside of the mounting groove (21); the adjusting rod (4) coaxially penetrates the winding drum (19), and the outer surface of the adjusting rod (4) is provided with a spiral spring (22), and the outer end of the spiral spring (22) is fixedly connected with a protrusion (23); the inner wall of the winding drum (19) is provided with a plurality of grooves (24), and the protrusions (23) are engaged with the grooves (24).

7. A protective device for construction safety according to claim 6, characterized in that: A first key block (25) is provided on the adjusting rod (4) located in the installation groove (21), the top end of the screw rod (6) penetrates into the interior of the installation groove (21), a second key block (26) is provided on the screw rod (6) located in the installation groove (21), a key slot (27) is provided on the connecting ring (9), and the first key block (25) and the second key block (26) are both slidably matched with the key slot (27).

8. A protective device for construction safety according to claim 6, characterized in that: A one-way limiting tooth (28) is provided on the outer surface of the connecting ring (9), and a non-return tooth (29) is provided on the inner wall of the mounting groove (21); one side of the non-return tooth (29) is provided as an inclined surface and the inclined surface matches the one-way limiting tooth (28).

9. A protective device for construction safety according to claim 5, characterized in that: The first upright pole (1) and the second upright pole (2) are both provided with a clamping ring (31), and the hook (20) matches the clamping ring (31).

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