Movable safety net device for hoisting construction

Abstract

The invention provides a movable safety net device for hoisting construction, and relates to the field of anti-falling nets for buildings, and the movable safety net device comprises a movable support which comprises a support body and a plurality of universal wheels arranged at the bottom of the support body; the protective net is fixed at the top of the movable bracket; the multiple supporting plates are arranged in the circumferential direction of the movable support and arranged on the outer side of the movable support in a lifting mode between a supporting state and a storage state; the lifting mechanism is arranged on the movable support and used for driving the supporting plate to ascend and descend. The pressure sensors correspond to the supporting plates one to one and are located at the bottoms of the supporting plates; the multiple pre-tightening mechanisms are arranged on the peripheral side of the protective net and used for pulling and pre-tightening the protective net; and the signal processor is used for controlling the pre-tightening mechanism to pull and pre-tighten the protective net according to the signal value change of the pressure sensor. The invention has the effect of providing a protection device with mobility, self-adaptability and efficient buffering capability.

Description

Technical Field

[0001] The present application relates to the technical field of anti-fall nets for construction, and in particular to a movable safety net device for use in hoisting construction. Background Art

[0002] High-altitude hoisting construction is a common operation in engineering fields such as construction, bridges, and power generation. The risk of personnel falling remains a key safety management challenge. As modern buildings evolve towards taller heights and larger spans, the construction environment becomes increasingly complex, and the limitations of traditional fixed safety protection facilities become increasingly prominent. Especially in situations requiring frequent movement, such as steel structure installation and curtain wall construction, how to synchronize the movement of protection systems with the construction progress has become a technical pain point that the industry urgently needs to address.

[0003] Currently, three main types of fall protection technologies are used on construction sites: fixed safety nets, which rely on anchor points pre-buried in the building structure for tensioning. Their protection range is fixed and installation is time-consuming. Passive buffer nets absorb impact energy through elastic deformation of the net material but lack an active response mechanism. Simple mobile guardrails only provide edge protection and fail to form a complete fall protection system. These technologies generally adopt a static protection concept and are unable to meet the efficient and dynamic safety needs of modern construction.

[0004] Therefore, there is an urgent need for a new protection technology with flexible mobility, adaptability and efficient buffering capabilities. Summary of the Invention

[0005] In order to provide a protective device with mobility, adaptability and efficient buffering capacity, the present application provides a movable safety net device for lifting construction.

[0006] The present application provides a movable safety net device for hoisting construction using the following technical solutions: A movable safety net device for hoisting construction, comprising: A mobile bracket with multiple universal wheels at the bottom; A protective net is fixed on the top of the mobile support; A plurality of support plates are arranged along the circumference of the movable bracket and can be raised and lowered on the outer side of the movable bracket between a supporting state and a storage state; A lifting mechanism, provided on the movable bracket, for driving the support plate to move up and down; A plurality of pressure sensors are provided and correspond one to one with the support plates, and are located at the bottom of the support plate; A plurality of pre-tightening mechanisms are provided on the periphery of the protective net and are used to pull one point of the protective net; The signal processor is electrically connected to the pressure sensor and the pre-tightening mechanism, and controls the pre-tightening mechanism to pull the protective net according to the change of the signal value of the pressure sensor.

[0007] Furthermore, the mobile bracket includes a plurality of connectors located at the top corners, a plurality of horizontally arranged cross bars and a plurality of vertically arranged vertical bars, and the connectors are detachably connected to two cross bars and a single vertical bar at the same time; The plurality of horizontal bars are connected end to end through connectors to form a bottom frame and a top frame of the mobile bracket, the plurality of vertical bars are located between the bottom frame and the top frame, and the protective net is fixedly connected to the plurality of connectors of the top frame.

[0008] Furthermore, the lifting mechanism includes: The movable connecting rod comprises a cylindrical middle portion and two side portions located on both sides of the middle portion, wherein the middle portion is vertically slidably sleeved on the vertical pole, and the two side portions are detachably connected to two adjacent support plates, respectively. The support plates are arranged between two different vertical poles and are simultaneously connected to the movable connecting rods on the two vertical poles; A locking assembly is provided on the vertical rod and is used for locking or releasing the movable connecting rod.

[0009] Furthermore, the locking assembly includes a first locking nut located above the middle of the movable connecting rod and a second locking nut located below the middle of the movable connecting rod. The bottom end of the vertical pole is provided with a thread, and the first locking nut and the second locking nut are both threadedly connected to the vertical pole.

[0010] Furthermore, the rope winding mechanism includes: a rope winding bracket, detachably connected to the support plate; A winch is installed on the top surface of the rope winding bracket and its height is higher than the protective net; A traction rope, one end of which is connected to the protective net and the other end is released or reeled in by a winch; Wherein, the hoist is electrically connected to the information processor.

[0011] Furthermore, the rope winding bracket includes a top support plate and a plurality of vertically arranged side support rods, and the side support rods are arranged on the support plate and the top support plate, and are all detachably connected to the support plate and the top support plate.

[0012] Furthermore, the support plate and the top support plate are provided with a plurality of connecting pieces on one side close to each other, for detachably connecting the vertical poles or the side support poles; The connecting part includes a mounting sleeve and a locking bolt. The mounting sleeve is fixedly connected to the support plate and the top support plate. The locking bolt is threadedly connected to the side wall of the mounting sleeve and abuts against the vertical pole or side support pole in the mounting sleeve to lock the vertical pole or side support pole.

[0013] Furthermore, the side uprights are divided into a first rod section and a second rod section, a transition support plate is provided between the first rod section and the second rod section, and a plurality of connecting members are provided on both sides of the transition support plate.

[0014] Furthermore, two movable connecting rods are vertically spaced apart on a single vertical pole, the lower movable connecting rod is connected to the support plate, and the upper movable connecting rod is connected to the transition support plate in the same way.

[0015] Furthermore, an elastic pad is provided at the bottom of the support plate, and the pressure sensor is embedded in the elastic pad.

[0016] In summary, this application includes at least one of the following beneficial technical effects: 1. To address the problem of blind spots caused by the inability of fixed safety nets to move with the construction progress, this application sets up a lifting mechanism in conjunction with a support plate and universal wheels to control the mobile bracket to enter mobile mode and anchor mode, making it easy to adjust the position of the safety net according to changes in the construction location, thus solving the problem of the safety net being unable to move with the construction progress; 2. To address the risk of secondary injuries caused by the inadequate absorption of impact energy by passive protective nets, this application fixedly connects the protective net to the top corners of the mobile bracket to bear static loads. Multiple pre-tensioning mechanisms are then installed to pull at multiple points on the protective net, providing traction from multiple directions. Combined with multiple pressure sensors, the traction at multiple pulling points is intelligently adjusted. This system can identify fall events with millisecond-level response speeds and trigger precise braking, reducing fall distance by 40%-60%. This achieves active pre-tensioning of the protective net, rapidly absorbing impact force and reducing the risk of secondary injuries. 3. In order to solve the problem that traditional protective net systems are difficult to disassemble and thus difficult to transport over long distances, this application adopts a detachable connection method for both the mobile bracket and the side bracket, making it easy to disassemble the device into multiple small unit components, which is convenient for long-distance transportation; 4. In order to address the problem of low stability caused by the high installation height of the rope winding mechanism, the present application sets up a separate side bracket connected to the support rod for anchoring, and sets the pre-tensioning mechanism on the support plate, so that most of the stress on the pre-tensioning mechanism can be directly transmitted to the ground, and the elastic pad at the bottom of the support plate can not only act as an anti-slip effect to improve the stability of the anchoring of the mobile bracket, but also can effectively buffer the stress on the pre-tensioning mechanism when the faller contacts the protective net, reducing the damage to the device structure caused by the impact, thereby improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the bottom perspective of an embodiment of the present application.

[0020] Figure 3 It is a structural schematic diagram of the protective net of an embodiment of the present application.

[0021] Figure 4 It is a front view of the support plate of the embodiment of the present application when it is in a supporting state.

[0022] Figure 5 It is a front view of the support plate of the embodiment of the present application in the stored state.

[0023] Figure 6 It is a structural schematic diagram of the pre-tightening mechanism of an embodiment of the present application.

[0024] Figure 7 yes Figure 1 Enlarged schematic diagram of part A.

[0025] Figure markings: 1. Mobile bracket; 11. Connecting head; 12. Cross bar; 13. Vertical pole; 14. Universal wheel; 2. Protective net; 3. Support plate; 31. Elastic pad; 4. Lifting mechanism; 41. Movable connecting rod; 411. Middle part; 412. Side part; 42. Locking assembly; 421. First locking nut; 422. Second locking nut; 5. Pressure sensor; 6. Pre-tightening mechanism; 61. Rope winding bracket; 611. Top support plate; 612. Side support rod; 6121. First rod section; 6122. Second rod section; 62. Winch; 621. Roller bracket; 622. Rope winding roller; 623. Drive motor; 63. Traction rope; 631. Hook; 64. Middle support plate; 7. Information processor; 8. Connector; 81. Mounting sleeve; 82. Locking bolt. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] The present application discloses a movable safety net device for hoisting construction. Figure 1 and Figure 2 , the movable safety net device used for hoisting construction includes: The mobile bracket 1 is provided with a plurality of universal wheels 14 at the bottom; The protective net 2 is fixed on the top of the mobile bracket 1, and its mesh surface is made of high-strength fiber, which has both bearing capacity and moderate ductility; A plurality of support plates 3 are arranged along the circumference of the mobile bracket 1 and can be raised and lowered on the outside of the mobile bracket 1 between a supporting state and a storage state; A lifting mechanism 4 is provided on the movable bracket 1 and is used to drive the support plate 3 to move up and down; A plurality of pressure sensors 5 are provided and correspond one to one with the support plates 3, and are located at the bottom of the support plates 3; A plurality of pre-tightening mechanisms 6 are provided on the periphery of the protective net 2 and are used to pull one point of the protective net 2; The signal processor is arranged on one side of the mobile bracket 1 and is electrically connected to the pressure sensor 5 and the pre-tightening mechanism 6 . The pre-tightening mechanism 6 is controlled to pull the protective net 2 according to the change of the signal value of the pressure sensor 5 .

[0028] The present application provides a plurality of universal wheels 14 at the bottom of a mobile support 1, and controls the lifting and lowering of a support plate 3 relative to the mobile support 1 between a supporting state and a stowed state via a lifting mechanism 4. When the support plate 3 is above the universal wheels 14, the support plate 3 is in the stowed state, at which point the mobile support 1 can be flexibly moved, making it convenient to adjust the position of the device to the hoisting construction position. When the support plate 3 is below the universal wheels 14, the support plate 3 is in the supporting state, at which point the support plate 3 can be stably anchored to the ground as an anchor point. When the support plate 3 is in the supporting state, if a person falls from a height and contacts the protective net 2, the pressure sensors 5 arranged at the bottom of the support plate 3 in various directions transmit pressure change signals to the information processor 7. After analysis, the information processor 7 controls the pre-tensioning mechanisms 6 in various directions to pull the corresponding points of the protective net 2. The fall event can be identified with a millisecond response speed and trigger precise braking, reducing the fall distance by 40%-60%, achieving active pre-tensioning of the protective net 2, quickly absorbing the impact force, and reducing the risk of secondary injury.

[0029] Specifically, such as Figure 1 As shown, the mobile stand 1 is cube-shaped and includes eight connectors 11 at the top corners, eight horizontal crossbars 12, and four vertical uprights 13. The connectors 11 are in the shape of right-angled triangular pyramids, each of their three right-angled sides having slots for the crossbars 12 or uprights 13. Four crossbars 12 are connected end-to-end by four connectors 11 to form the bottom frame of the mobile stand 1. Another four crossbars 12 are connected end-to-end by four connectors 11 to form the top frame of the mobile stand 1. Four uprights are positioned between the bottom and top frames, forming a removable cube-shaped mobile stand 1.

[0030] As an alternative embodiment, the mobile bracket 1 may also be configured as a regular pentagonal column or a regular hexagonal column.

[0031] In this embodiment, the slots on the connector 11 are all threaded grooves, and both ends of the vertical rod 13 and the horizontal rod 12 are provided with threads and are threadedly connected to the connector 11, which is convenient for disassembly and can improve the stability of the structural connection.

[0032] In addition, if Figure 3 As shown, the four corners of the protective net 2 are fixedly connected to the four connecting heads 11 located at the top corners of the mobile bracket 1 by bolts. As a basic connection, it mainly bears static loads. Four groups of pre-tightening mechanisms 6 are set, located on the outside of the four sides of the protective net 2, and pull the midpoints of the four sides of the protective net 2 respectively to bear dynamic loads.

[0033] Reference Figure 4 、 Figure 5 and Figure 6 The lifting mechanism 4 includes a movable connecting rod 41 and a locking assembly 42. The movable connecting rod 41 is V-shaped, including a cylindrical middle part 411 and two side parts 412 located on both sides of the middle part 411. One end of the side part 412 is welded and fixed to the middle part 411, and the other end is detachably connected to the support plate 3. The middle part 411 is slidably sleeved on the vertical pole 13 along the vertical direction. The side part 412 is divided into two sections, the section close to the middle part 411 is inclined, and the section away from the middle part 411 is vertically arranged to facilitate connection with the support plate 3. The same support plate 3 is connected at both ends to the movable support rods on the two vertical poles 13 respectively, and the locking assembly 42 is arranged on the vertical pole 13 for locking the movable connecting rod 41.

[0034] Furthermore, the locking assembly 42 includes a first locking nut 421 and a second locking nut 422. The thread at the bottom of the vertical rod 13 extends to above the first locking nut 421. The middle part 411 of the movable link 41 is clamped in the middle by the first locking nut 421 and the second locking nut 422, so that the movable link 41 can be locked. By adjusting the height of the first locking nut 421 and the second locking nut 422, the locking link can be locked at different heights.

[0035] During the specific operation process, when changing the support plate 3 to the supporting state, first rotate the second locking nut 422 to the bottom, and then rotate the first locking nut 421 to push the movable link 41 to move downward until the middle part 411 of the movable link 41 abuts against the second locking nut 422. At this time, the bottom surface of the support plate 3 is lowered below the universal wheel 14, that is, it enters the supporting state; when changing the support plate 3 from the supporting state to the storage state, first rotate the first locking nut 421 to the top, and then rotate the second locking nut 422 to push the movable link 41 to move upward until the middle part 411 of the movable link 41 abuts against the first locking nut 421. At this time, the bottom surface of the support plate 3 rises above the universal wheel 14, that is, it enters the storage state.

[0036] It should be noted that since each support plate 3 is simultaneously connected to the movable links 41 on two different vertical poles 13, in order to avoid the operational complexity of keeping all movable links 41 raised and lowered synchronously, it is necessary to separate the movable links 41 from the support plate 3 before making adjustments, so as to facilitate the adjustment of the movable links 41 individually in turn. After completing the adjustment of all movable links 41, the movable links 41 are connected to the support plate 3 to complete the transition of the mobile bracket 1 between the moving state and the anchored state.

[0037] On the other hand, refer to Figure 6 and Figure 7 The pre-tightening mechanism 6 includes a rope winding bracket 61, a hoist 62 and a traction rope 63. The rope winding bracket 61 is detachably connected to the support plate 3. The hoist 62 is installed on the top of the rope winding bracket 61 and its height is higher than the protective net 2. The traction rope 63 can be set as a steel cable, one end of the traction rope 63 is connected to the midpoint of one side of the protective net 2 through a hook 631, and the other end is wound by the hoist 62. The hoist 62 includes a roller bracket 621, a rope winding roller 622 and a drive motor 623, as shown in FIG. Figure 7 As shown, the roller bracket 621 is fixed to the top support plate 611 by bolts, the rope roller 622 is rotatably mounted on the roller bracket 621, and the drive motor 623 is fixed to one side of the roller bracket 621 by bolts. The drive motor 623 is a servo motor, which is electrically connected to the information processor 7. The information processor 7 receives signals from the pressure sensor 5 to control the operation of the winch 62 in different directions to pull the protective net 2.

[0038] By arranging the rope winding bracket 61 on the support plate 3 , most of the stress on the pre-tightening mechanism 6 can be directly transmitted to the ground, thereby reducing the possibility of deformation of the mobile bracket 1 .

[0039] Specifically, the rope winding bracket 61 includes a top support plate 611 and three side support rods 612. The three side support rods 612 are all arranged in the vertical direction, and their positions are arranged in an isosceles triangle. The top support plate 611 is a rectangular plate with the same shape as the support plate 3. It is located at the top of the side support rod 612 and is detachably connected to the support rod. Both the support plate 3 and the top support plate 611 are provided with a connecting piece 8, and the connecting piece 8 includes a mounting sleeve 81 and a locking bolt 82. The mounting sleeve 81 is welded and fixed to the support plate 3 or the top support plate 611, and the side support rod 612 or the movable connecting rod 41 has the same inner diameter as the mounting sleeve 81. The locking bolt 82 is a butterfly bolt, which is threadedly connected to the side wall of the mounting sleeve 81. By rotating the locking bolt 82, the end of the locking bolt 82 penetrates into the interior of the mounting sleeve 81 to tighten the side support rod 612 or the movable connecting rod 41 inserted into the interior of the mounting sleeve 81, and the side support rod 612 or the movable connecting rod 41 can be locked. In this embodiment, five connecting pieces 8 are provided on the top surface of the support plate 3, three of which are used to connect the side support rods 612, and the other two are used to connect the movable connecting rod 41.

[0040] In order to further improve the structural stability of the rope winding bracket 61, the side 412 vertical pole 13 is divided into a first pole segment 6121 and a second pole segment 6122. The first pole segment 6121 is located above the second pole segment 6122, and an intermediate support plate 64 is set between the first pole segment 6121 and the second pole segment 6122. The intermediate support plate 64 is a rectangular plate that is the same as the top support plate 611.

[0041] Furthermore, two movable links 41 are vertically spaced apart on each upright 13. The lower movable link 41 is connected to the support plate 3, and the upper movable link 41 is connected to the intermediate support plate 64. The bottom surface of the intermediate support plate 64 is provided with three connecting members 8, each for connecting to the second rod segment 6122; the top surface of the intermediate support plate 64 is provided with five connecting members 8, three of which are used to connect to the first rod segment 6121, and the remaining two connecting members 8 are used to connect the two movable links 41. Figure 6 As shown, the connection method between the middle support plate 64 and the movable connecting rod 41 is the same as the connection method between the support plate 3 and the movable connecting rod 41, and will not be repeated here.

[0042] By setting up the intermediate support plate 64, the structural strength of the rope winding bracket 61 can be enhanced, and the additional movable connecting rod 41 connects the rope winding bracket 61 to the movable bracket 1. The movable bracket 1 can provide lateral support force for the rope winding bracket 61, thereby effectively improving the structural stability of the rope winding bracket 61.

[0043] On the other hand, Figure 2 As shown, an elastic pad 31 is provided at the bottom of the support plate 3. The elastic pad 31 can be a rubber pad layer, and a groove is provided at the portion 411 thereof. The pressure sensor 5 is fixed inside the groove. The elastic pad 31 can not only act as an anti-slip effect and improve the anchoring stability of the mobile bracket 1, but also can effectively buffer the stress of the pre-tightening mechanism 6 when the faller contacts the protective net 2, reduce the damage to the device structure caused by the impact, and further improve the stability of the device.

[0044] The information processor 7 includes a housing and, within it, a main control unit, a signal module, a communication module, and a power module. The main control unit utilizes a microcontroller with a built-in floating-point unit, which runs the fall detection algorithm and control logic. The signal module includes four 16-bit analog-to-digital converters, each connected to the four pressure sensors 5. The communication module connects to the servo motors on each winch 62 via a local area network. The power module provides power to each module.

[0045] The information processor 7 can determine the landing point deviation position of the faller based on the signal change of the pressure sensor 5 in different directions, thereby increasing the stress of the winch 62 near the corresponding position to pull the protective net 2, achieving precise energy buffering and absorption, and sharing the force of the mobile bracket.

[0046] Therefore, the embodiment of the present application is a movable safety net device for lifting construction, which fixes a rectangular protective net 2 at the four corners of the top of a movable bracket 1, and has pulling points on the edge of the net and is connected to a winch 62; when a person falls and hits the net surface, the four pressure sensors 5 at the bottom of the support plate 3 detect the sudden change in pressure in real time, and the information processor 7 analyzes the sensor data and locates the direction of the fall, and then triggers the winch 62 in the corresponding direction to quickly pull the net surface, forming a dynamic buffer, and realizing millisecond-level active pre-tightening protection, thereby reducing the falling distance and reducing the impact force, and effectively preventing secondary injuries.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A movable safety net device for hoisting construction, characterized in that: include: The mobile bracket comprises a frame body and a plurality of universal wheels arranged at the bottom of the frame body; A protective net is fixed on the top of the mobile bracket; A plurality of support plates are arranged along the circumference of the movable bracket and can be raised and lowered on the outer side of the movable bracket between a supporting state and a storage state; A lifting mechanism, provided on the movable bracket, for driving the support plate to move up and down; A plurality of pressure sensors are provided and correspond one to one with the support plates, and are located at the bottom of the support plate; A plurality of pre-tightening mechanisms are provided on the periphery of the protective net, and are used to pull and pre-tighten the protective net; The signal processor is electrically connected to the pressure sensor and the pre-tightening mechanism, and controls the pre-tightening mechanism to pull and pre-tighten the protective net according to the change of the signal value of the pressure sensor.

2. A movable safety net device for hoisting construction according to claim 1, characterized in that: The frame includes a plurality of connectors located at the top corners, a plurality of horizontally arranged cross bars and a plurality of vertically arranged vertical bars, wherein the connectors are detachably connected to two cross bars and a single vertical bar at the same time; The plurality of horizontal bars are connected end to end through connectors to form a bottom frame and a top frame of the mobile bracket, the plurality of vertical bars are located between the bottom frame and the top frame, and the protective net is fixedly connected to the plurality of connectors of the top frame.

3. A movable safety net device for hoisting construction according to claim 2, characterized in that: The lifting mechanism comprises: The movable connecting rod comprises a cylindrical middle portion and two side portions located on both sides of the middle portion, wherein the middle portion is vertically slidably sleeved on the vertical pole, and the two side portions are detachably connected to two adjacent support plates, respectively. The support plates are arranged between two different vertical poles and are simultaneously connected to the movable connecting rods on the two vertical poles; A locking assembly is provided on the vertical rod and is used for locking or releasing the movable connecting rod.

4. A movable safety net device for hoisting construction according to claim 3, characterized in that: The locking assembly includes a first locking nut located above the middle of the movable connecting rod and a second locking nut located below the middle of the movable connecting rod. The bottom end of the vertical pole is provided with a thread, and the first locking nut and the second locking nut are both threadedly connected to the vertical pole.

5. A movable safety net device for hoisting construction according to any one of claim 3, characterized in that: The pre-tightening mechanism comprises: a rope winding bracket, detachably connected to the support plate; A winch is installed on the top surface of the rope winding bracket and its height is higher than the protective net; The traction rope is connected to the protective net at one end and is wound up by a winch at the other end; Wherein, the hoist is electrically connected to the information processor.

6. A movable safety net device for hoisting construction according to claim 5, characterized in that: The rope winding bracket includes a top support plate and a plurality of vertically arranged side support rods. The side support rods are arranged on the support plate and the top support plate and are detachably connected to the support plate and the top support plate.

7. A movable safety net device for hoisting construction according to claim 6, characterized in that: The support plate and the top support plate are provided with a plurality of connecting pieces on one side close to each other, for detachably connecting the vertical poles or the side support poles; The connecting part includes a mounting sleeve and a locking bolt. The mounting sleeve is fixedly connected to the support plate and the top support plate. The locking bolt is threadedly connected to the side wall of the mounting sleeve and abuts against the vertical pole or side support pole in the mounting sleeve to lock the vertical pole or side support pole.

8. The movable safety net device for hoisting construction according to claim 7, characterized in that: The side upright pole is divided into a first pole segment and a second pole segment. A transition support plate is provided between the first pole segment and the second pole segment. A plurality of connecting members are provided on both sides of the transition support plate.

9. The movable safety net device for hoisting construction according to claim 8, characterized in that: Two movable connecting rods are vertically spaced apart on a single vertical pole. The movable connecting rod at the bottom is connected to the support plate, and the movable connecting rod at the top is connected to the transition support plate in the same way.

10. The movable safety net device for hoisting construction according to claim 1, characterized in that: An elastic pad is provided at the bottom of the support plate, and the pressure sensor is embedded in the elastic pad.

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