Fence warning device

Abstract

This invention discloses a hoarding warning device, including a hoarding panel. Two sets of pull plates are symmetrically and slidably embedded in the front of the hoarding panel along its center. A base plate is rotatably mounted at the bottom of the two sets of horizontal pull plates, and the base plate is slidably embedded in the bottom of the hoarding panel, symmetrically arranged along the bottom center of the hoarding panel. A transmission mechanism is rotatably engaged with the side of the pull plates closest to the hoarding panel. In use, after the hoarding panel is installed and fixed, the pull plates and base plates retract into the hoarding panel, thereby reducing the area occupied on the road and maximizing the road's efficiency. In windy weather, the wind blows the drive mechanism to move to the leeward side of the hoarding panel, and it engages with the transmission mechanism on the leeward side. The fan rotation causes the lead screw to rotate, and the rotation of the lead screw, through a collar and a pull rod, pushes the pull plates and base plates out of the hoarding panel, thereby forming support for the hoarding panel, achieving targeted support and stability for the hoarding panel, and preventing damage to the hoarding panel that would affect subsequent use.

Description

Technical Field

[0001] This invention relates to the field of construction site warning technology, specifically a construction site warning device. Background Technology

[0002] When constructing transportation projects such as highways and railways, as well as urban municipal projects, it is usually necessary to use warning barriers to isolate the construction area from open traffic routes and adjacent plots.

[0003] Chinese Patent Publication No. CN219509391U discloses a construction site warning sign for a construction site, comprising a T-shaped base, a support rod, a baffle, and a limiting frame. The base includes a mounting base and a bottom rod. The top surface of the mounting base has a downward-facing groove. The support rod is fixedly installed above the end of the bottom rod near the mounting base. The limiting frame is installed on the support rod and has an I-shaped structure. The limiting frame includes two parallel limiting plates and a connecting plate. The connecting plate is positioned between the two limiting plates, and the two limiting plates and the connecting plate form a limiting groove. The limiting plates are fixedly connected to the support rod, and the position of the limiting frame corresponds one-to-one with the position of the mounting base. The bottom of the baffle is engaged in the groove, and one side of the baffle is engaged in the limiting groove of the baffle.

[0004] When in use, the aforementioned fencing device uses a base, mounting brackets, and reinforcing rods to install and fix the fencing. However, in actual use, especially during road construction, although the base and reinforcing rods reinforce one side of the fencing, they occupy a large area, reducing the road area available for vehicle and pedestrian passage and causing inconvenience to traffic. Secondly, the reinforcing rods only reinforce one side of the fencing, leaving the other side unreinforced. If the side of the reinforcing rod is the windward side during windy weather, the leeward side of the fencing can only bear the force through the mounting brackets and limiting brackets, increasing the risk of the fencing being blown over or causing the bolts connecting the base to the ground to loosen, leading to inconvenience in subsequent use.

[0005] Therefore, it is necessary to provide a fencing warning device to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to provide a fencing warning device to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a hoarding warning device, comprising a hoarding plate, wherein the left and right ends of the hoarding plate are respectively provided with a locking block and a locking groove, the locking block and the locking groove being adapted to each other; two sets of pull plates are symmetrically slidably embedded in the front of the hoarding plate along the center, and the two sets of pull plates are also symmetrically arranged in the reverse side of the hoarding plate along the center; a base plate is rotatably provided at the bottom of the two sets of pull plates, the base plate is slidably embedded in the bottom of the hoarding plate, and the base plate is symmetrically arranged in the bottom center of the hoarding plate; a transmission mechanism is rotatably engaged on the side of the pull plate near the hoarding plate, and a drive mechanism is driven and engaged at the top of the transmission mechanism; the transmission mechanism and the drive mechanism are both disposed on the hoarding plate.

[0008] As a further aspect of the present invention: the driving mechanism includes a driving plate; a through hole is provided at the center of the top of the enclosure plate, the driving plate is slidably embedded in the through hole, connecting rods are fixedly connected to both ends of the driving plate, and rings are slidably connected to both ends of the connecting rods. A fan is fixedly connected to the rings through a support rod. Air inlets are provided on both sides of the top of the enclosure plate, and transmission gears are fixedly connected to both ends of the air inlets. The fan is sleeved around the transmission gears and is located inside the air inlets. The connecting rods are slidably fitted against the inner wall of the enclosure plate, and a first bevel gear is fixedly connected to both ends of the center of the fan. The first bevel gear is in transmission cooperation with the transmission mechanism.

[0009] As a further aspect of the present invention: the transmission mechanism includes lead screws corresponding to multiple sets of pull plates; a collar is rotatably mounted on the lead screw, and a pull rod is rotatably mounted on the end of the collar near the pull plate via a support plate; the end of the pull rod away from the collar is rotatably engaged with the pull plate via the support plate; the rotation of the lead screw is located on the inner wall of the enclosure plate; a transmission rod is fixedly connected to the top of the lead screw; the transmission rod is located inside the air inlet; and the top of the transmission rod is engaged with a transmission gear.

[0010] As a further embodiment of the present invention: a fixing rod is slidably embedded at both ends of the enclosure plate, and fixing holes that are slidably adapted to the fixing rods are provided at both ends of the enclosure plate. A push plate is fixedly connected to the end of the fixing rod near the lead screw. An inclined surface is provided at the top of the push plate, and the inclined surface faces away from the fixing rod. A push block is fixedly connected to the end of the collar away from the pull rod, and the push block is slidably fitted with the push plate.

[0011] As a further embodiment of the present invention: a transmission gear is fixedly connected to the bottom end of the lead screw, two adjacent sets of transmission gears are staggered vertically, a toothed plate is meshed with the outer side of the transmission gear, two adjacent sets of toothed plates are staggered vertically and are respectively arranged on both sides of the transmission gear, and the opposite ends of the two adjacent sets of toothed plates are respectively fixedly connected to two sets of base plates.

[0012] As a further embodiment of the present invention: two sets of square tubes and two sets of corrugated tubes are symmetrically arranged along the center between the two sets of base plates. An inner tube is elastically slidably connected inside the square tube. The two sets of base plates are connected by the square tube and the inner tube. The two ends of the corrugated tube are fixedly connected to the two sets of base plates.

[0013] As a further aspect of the present invention: a one-way valve and an air outlet are provided at the end of the base plate corresponding to the bellows.

[0014] As a further aspect of the present invention: a chain is driven between the two sets of corresponding lead screws, the chain is slidably embedded in the side wall of the enclosure plate and is symmetrically arranged along the center of the enclosure plate, a first sprocket is driven connected in the middle of the chain, and two sets of first sprockets are located between the two sets of chains, and a fourth bevel gear is fixedly connected to the bottom end of the first sprocket through a first rotating shaft.

[0015] As a further embodiment of the present invention: a gravity block is slidably provided on the central sidewall of the enclosure, and multiple sets of blocking holes are arranged in an array on the central sidewall of the gravity block. A protrusion is elastically embedded on the inner wall of the enclosure, and one end of the protrusion near the gravity block is slidably fitted with the blocking hole.

[0016] As a further embodiment of the present invention: a blocking post is provided at the top of the gravity block, a horizontal plate is fixedly connected to the top of the blocking post, and winding rollers are rotatably provided at both ends of the top of the horizontal plate. A third bevel gear is fixedly connected to the top center of the winding roller through a second rotating shaft. The third bevel gear and a fourth bevel gear are in transmission cooperation. A pull rope is wound on the winding roller. One end of the pull rope passes through the blocking post and is fixedly connected to the gravity block. The bottom end of the blocking post is slidably attached to the blocking hole. The blocking post, the winding roller, the horizontal plate, and the third bevel gear are all arranged inside the side wall of the enclosure plate, and the winding roller is elastically connected to the inner wall of the enclosure plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of the drive mechanism, transmission mechanism, pull plate, and base plate, after the fence is installed and fixed, the pull plate and base plate retract into the fence, thereby reducing the area occupied on the road and maximizing the road's efficiency. When encountering windy weather, the wind blows the drive mechanism to move to the leeward side of the fence and engages with the transmission mechanism on the leeward side. The wind also causes the fan in the drive mechanism to rotate. The fan rotation causes the lead screw to rotate through the cooperation of the first bevel gear and the transmission rod. The lead screw rotation causes the pull plate and base plate to be pushed out of the fence through the collar and pull rod, thereby forming support for the fence and achieving targeted support and stability for the fence, preventing damage to the fence and affecting subsequent use. When the collar moves downward, it also pushes the push plate, thereby causing the fixing rod to extend into another corresponding fixing hole, thereby improving the stability between multiple fences. It is simple and practical. Attached Figure Description

[0018] Figure 1 This is a frontal three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the middle cross-sectional structure of the pull plate in this invention.

[0020] Figure 3 In this invention Figure 2 A schematic diagram of the structure at point A in the middle.

[0021] Figure 4 This is a schematic diagram of the drive mechanism in this invention.

[0022] Figure 5 In this invention Figure 4 A schematic diagram of the structure at point B.

[0023] Figure 6 This is a schematic diagram of the push plate in this invention.

[0024] Figure 7 This is a schematic diagram of the transmission mechanism in this invention.

[0025] Figure 8 In this invention Figure 4 A schematic diagram of the structure at point C.

[0026] Figure 9 This is a schematic diagram of the cross-section of the middle part of the enclosure panel in this invention.

[0027] Figure 10 In this invention Figure 9 A schematic diagram of the structure at point D.

[0028] Figure 11 This is a schematic diagram of the gravity block in this invention.

[0029] In the diagram: 1. Enclosure panel; 2. Pull plate; 3. Base plate; 4. Gravity block; 5. Drive plate; 6. Through hole; 7. Fan; 8. Lead screw; 81. Transmission rod; 9. Push plate; 10. Pull rod; 11. Chain; 12. Collar; 121. Push block; 13. Connecting rod; 14. Fixing rod; 15. Fixing hole; 16. Square tube; 161. Inner tube; 17. Corrugated pipe; 18. Toothed plate; 19. Transmission gear; 20. First bevel gear; 21. Ring; 22. Blocking post; 23. Pull rope; 24. Winding roller; 25. Third bevel gear; 26. Fourth bevel gear; 27. First sprocket; 28. Horizontal plate; 29. ​​Protrusion; 30. Blocking hole. Detailed Implementation

[0030] Please see Figures 1-11In this embodiment of the invention, a fencing warning device includes a fencing panel 1. Preferably, the left and right ends of the fencing panel 1 are respectively provided with locking blocks and locking slots, which are correspondingly adapted to each other. When multiple fencing panels 1 are assembled and used, adjacent fencing panels 1 are assembled through the cooperation of the locking blocks and locking slots, and the bottom of the fencing panel 1 is fixedly connected to the ground by bolts. Two sets of pull plates 2 are symmetrically slidably embedded on the front side of the fencing panel 1. The top two sides of the pull plates 2 are slidably connected to the side wall of the fencing panel 1 through connecting shafts, and the side wall of the fencing panel 1 is provided with a sliding groove adapted to the sliding of the connecting shaft. The two sets of pull plates 2 are also symmetrically arranged around the center of the fencing panel 1. On the opposite side of the baffle 1, a bottom plate 3 is rotatably provided at the bottom of the two sets of horizontal pull plates 2 (i.e., the two sets of pull plates 2 corresponding to the front or back). The bottom plate 3 is slidably embedded in the bottom of the baffle 1, and two sets of bottom plates 3 are symmetrically arranged along the bottom center of the baffle 1. The pull plate 2 is rotatably engaged with a transmission mechanism on the side close to the baffle 1. When the transmission mechanism moves, the bottom plate 3 can move horizontally and extend out of the bottom of the baffle 1, thereby causing the pull plate 2 to rotate and open under the cooperation of the sliding groove and the connecting shaft, thus forming a support for the baffle 1 with the bottom plate 3. The top of the transmission mechanism is driven by a drive mechanism. Both the transmission mechanism and the drive mechanism are provided on the baffle 1.

[0031] It should be noted that the transmission mechanism is set between two adjacent sets of pull plates 2, while the drive mechanism is set between the transmission mechanisms. In this way, a set of drive mechanisms can drive different transmission mechanisms in windy weather with different wind directions, thereby causing the pull plate 2 and the bottom plate 3 on the other side that is in conflict with the wind to protrude and form support for the enclosure plate 1, thereby improving the stability of the enclosure plate 1.

[0032] In use, during windy weather, the wind causes the drive mechanism to rotate and moves in the direction of the wind. In conjunction with a transmission mechanism, when the two work together, the drive mechanism causes the transmission to rotate, which in turn causes the pull plate 2 and the base plate 3 to move and protrude from one side of the enclosure 1. The pull plate 2 and the base plate 3 protruding from the enclosure 1 form a triangle, which effectively supports the enclosure 1 and prevents the connection point between the enclosure 1 and the ground from being loosened by strong winds, affecting subsequent use, or directly blowing the enclosure 1 over, causing damage and inconvenience to use.

[0033] Please refer to Figures 1-2 , Figure 4 , Figure 7Preferably, the driving mechanism includes a driving plate 5; a through hole 6 is provided at the center of the top of the enclosure plate 1, the two ends of the through hole 6 are rounded, and the top of the through hole 6 penetrates the top of the enclosure plate 1, so that the wind can better enter the through hole 6 and flow out through the opening at its top. The driving plate 5 is slidably embedded in the through hole 6, and the two sides of the driving plate 5 can be elastically connected to the through hole 6 by a first spring. In the initial state, the driving plate 5 is located at the center of the through hole 6. When external wind enters the through hole 6 through one of the openings, due to the presence of the driving plate 5, when it blows into the through hole 6... When the wind is strong, to prevent the fencing 1 from being continuously blown by strong winds, which could cause it to loosen or tip over at its connection with the ground, the wind will push the drive plate 5 to move towards the other opening of the through hole 6. When the wind is weak, the wind force is within the bearing capacity of the connection between the fencing 1 and the ground. The wind entering through one opening of the through hole 6 will be blocked by the drive plate 5 and then blow out from the top opening of the fencing 1. The drive plate 5 will not move under the limit of the first spring. The two ends of the drive plate 5 are fixedly connected to the connecting rods 13. When the drive plate 5 moves, it will drive the connecting rods 13 to move. The connecting rod 13 is slidably connected to both ends of a ring 21. Moving the connecting rod 13 causes the ring 21 to move. A fan 7 is fixedly connected inside the ring 21 via a support rod. Moving the ring 21 causes the fan 7 to move. Air inlets are provided on both sides of the top of the enclosure 1. Transmission gears 19 are fixedly connected to both ends of the air inlets. The fan 7 is sleeved around the transmission gears 19, which provide support for the fan 7. The fan 7 is positioned inside the air inlets, allowing it to rotate continuously under the influence of airflow. The connecting rod 13 slides against the inner wall of the enclosure 1. The fan 7 has a first bevel gear 20 fixedly connected to both ends of its center. The first bevel gear 20 is engaged with the transmission mechanism. When the fan 7 rotates, it drives the first bevel gear 20 to rotate. The movement of the fan 7 also drives the first bevel gear 20 to move and mesh with the transmission mechanism. Thus, when the fan 7 rotates, it drives the transmission mechanism to rotate through the first bevel gear 20. The rotation of the transmission mechanism causes the pull plate 2 and the bottom plate 3 on the leeward side of the enclosure 1 to move and protrude, thereby forming a support for the enclosure 1. This ensures that the enclosure 1 will not tilt or become loose at its connection with the ground in strong winds, thus preventing damage.

[0034] Please refer to Figures 1-6 , Figure 9Preferably, the transmission mechanism includes lead screws 8 corresponding one-to-one with multiple sets of pull plates 2. A torsion spring is provided between the lead screw 8 and the side wall of the baffle plate 1, allowing the lead screw 8 to automatically reset after rotation. Alternatively, a spring mechanism can be used to automatically reset the lead screw 8. A collar 12 is rotatably mounted on the lead screw 8. A pull rod 10 is rotatably mounted on the end of the collar 12 near the pull plate 2 via a support plate. The end of the pull rod 10 away from the collar 12 is rotatably engaged with the pull plate 2 via the support plate. The rotation mechanism of the lead screw 8 is located on the inner wall of the enclosure 1. A transmission rod 81 is fixedly connected to the top of the lead screw 8, and a second bevel gear is located at the end of the transmission rod 81. The transmission rod 81 is located inside the air inlet, and its top end engages with the transmission gear 19. In use, initially, the pull plate 2 and the base plate 3 are retracted within the enclosure 1, making the pull rod 10 approximately vertically retracted. During windy weather, the wind drives the drive mechanism to move, causing the fan 7 to move towards a set of transmission rods. The movement of 81 causes the first bevel gear 20 to mesh with a set of transmission rods 81. The rotation of the fan 7, via the first bevel gear 20, drives the transmission rods 81 to rotate. The rotation of the transmission rods 81 drives the lead screw 8 to rotate. The rotation of the lead screw 8 causes the collar 12 to move downwards on the lead screw 8. The movement of the collar 12, through the pull rod 10, pushes the pull plate 2 to rotate, protruding from the side wall of the enclosure 1. The pull plate 2, constrained by the bottom plate 3, slides downwards within a groove on the enclosure 1. The bottom plate 3 then extends horizontally from the bottom of the enclosure 1, cooperating with... The pull plate 2 provides support for the enclosure plate 1. When the wind stops or decreases, the drive mechanism moves and resets, causing the first bevel gear 20 to separate from the transmission rod 81. Subsequently, the lead screw 8 rotates and resets under the action of the corresponding torsion spring, causing the collar 12 to move and reset. The movement and reset of the collar 12 drives the pull plate 2 to move and reset through the pull rod 10. The movement and reset of the pull plate 2 drives the bottom plate 3 to move and reset, thus restoring the initial state. The pull plate 2 and the bottom plate 3 retract into the enclosure plate 1, which does not affect subsequent construction operations and reduces the land area occupied.

[0035] Furthermore, to prevent the fencing panels 1 from being unstable due to insufficient rigidity caused by the simple connection of the clamps and slots during strong winds, which could easily cause the fencing panels 1 to sway in strong winds, it is preferable that the two ends of the fencing panels 1 are slidably fitted with fixing rods 14, and the two ends of the fencing panels 1 are provided with fixing holes 15 that are slidably adapted to the fixing rods 14. The fixing rods 14 and fixing holes 15 are staggered at one end of the fencing panels 1. The end of the fixing rod 14 near the lead screw 8 is fixedly connected to a push plate 9. The top of the push plate 9 is provided with an inclined surface, and the inclined surface faces away from the fixing rod 14. The end of the collar 12 away from the pull rod 10 is fixedly connected to a push block 121. The push block 121 slides and fits against the push plate 9. The push plate 9 is elastically connected to the inner wall of the fencing panel 1 through a first elastic column. In use, when the lead screw 8 rotates and causes the collar 12 to move downward, the collar... The movement of ring 12 drives the movement of push block 121. Since push block 121 slides and fits against the inclined surface on push plate 9, when push block 121 moves downward, it pushes push plate 9 towards the direction of fixing hole 15. The movement of push plate 9 pushes the end of fixing rod 14 extending out of the enclosure plate 1 to cooperate with the fixing hole 15 on another enclosure plate 1, thereby increasing the connection contact area between the two adjacent sets of enclosure plates 1, thereby improving the stability and rigidity of the connection, and thus better resisting strong winds. When the collar 12 moves back to its original position, it drives push block 121 to move back to its original position. Push plate 9 moves back to its original position under the action of the first elastic column, thereby causing fixing rod 14 to move back to its original position, thereby reducing the complexity of subsequent disassembly and reducing the wear of fixing rod 14. A set of push plates 9 is set between the two sets of transmission mechanisms at one end of enclosure plate 1, so that no matter which set of transmission mechanism is driven, push plate 9 will move independently.

[0036] Furthermore, when the pull plate 2, base plate 3, and pull rod 10 are retracted within the enclosure plate 1, to prevent the collar 12 from getting stuck when it moves downwards due to the pull rod 10 being in a near-vertical state, preferably, a transmission gear 19 is fixedly connected to the bottom end of the lead screw 8. Two adjacent sets of transmission gears 19 are staggered vertically, meaning the transmission gear 19 on one set of lead screws 8 is lower than the transmission gear 19 on the other set. A toothed plate 18 meshes with the outer side of each transmission gear 19. Two adjacent sets of toothed plates 18 are also staggered vertically and mesh with the two sets of transmission gears 19 respectively. The toothed plates 18 are respectively positioned on both sides of the transmission gear 19. The opposite ends of two adjacent sets of toothed plates 18 are respectively fixedly connected to two sets of base plates 3. Through the staggered arrangement of transmission gears 19 and toothed plates 18, one set of transmission gears 19 will only drive one set of toothed plates 18 to move, thus avoiding the problem of jamming. When the lead screw 8 rotates, it drives the transmission gear 19 to rotate. The rotation of the transmission gear 19 drives the toothed plates 18 to move outward of the enclosure plate 1, which in turn pushes the base plate 3 to move outward. The movement of the base plate 3 will drive the pull plate 2 to rotate and protrude outward of the enclosure plate 1, thus making the pull rod 10 in an inclined state. This facilitates the downward movement of the collar 12 to push the pull plate 2 to continue to rotate and protrude outward of the enclosure plate 1, avoiding the problem of the collar 12 getting stuck.

[0037] It should be noted that the two adjacent sets of toothed plates 18 and transmission gears 19 are located at one end of the enclosure plate 1, and the end of the bottom plate 3 at the connection point with the pull plate 2 and near the inner wall of the enclosure plate 1 is rounded, so as not to affect the rotation between the pull plate 2 and the bottom plate 3.

[0038] Please see Figure 4 , Figure 8Preferably, two sets of square tubes 16 and two sets of corrugated tubes 17 are symmetrically arranged around the center between the two sets of base plates 3. An inner tube 161 is elastically slidably connected to the square tube 16 by a second spring. The two sets of base plates 3 are connected by the square tubes 16 and the inner tubes 161. The two ends of the corrugated tubes 17 are fixedly connected to the two sets of base plates 3. In use, during windy weather, the drive mechanism moves in coordination with the transmission mechanism. The drive transmission mechanism causes the pull plate 2 and base plate 3 on the leeward side of the enclosure 1 to move out of the enclosure 1 to form corresponding support. Since the transmission mechanism, pull plate 2, and base plate 3 on the windward side are still retracted within the enclosure 1, and the transmission mechanism does not rotate to restrict the pull plate 2 and base plate 3, when the base plate 3 on the leeward side moves, the square tubes 16 and the inner tubes 161 move away from each other, thereby forming a support between the inner tubes 161 and the square tubes 16. The movement of the base plate 3 is restricted, and effective support is achieved through the cooperation of the base plate 3, square tube 16, and inner tube 161. The end of the base plate 3 corresponding to the corrugated tube 17 is provided with a one-way valve and an air outlet. That is, one set of the base plates 3 is provided with a one-way valve and an air outlet at the end corresponding to one set of corrugated tube 17, and another set of the base plates 3 is provided with a one-way valve and an air outlet at the end corresponding to another set of corrugated tube 17. The one-way valve allows external air to enter the corrugated tube 17, and the diameter of the air outlet is smaller than the diameter of the one-way valve. In this way, when the corrugated tube 17 expands, it can quickly absorb external gas. When the corrugated tube 17 contracts, it can only contract slowly under the action of the air outlet. In this way, when the base plate 3 and the pull plate 2 move and reset, the effect of slow reset is achieved, avoiding damage to the enclosure plate 1 caused by a sudden gust of wind after the pull plate 2 and the base plate 3 have retracted into the enclosure plate 1 when the wind has not completely stopped.

[0039] Please refer to Figures 2-3 , Figures 9-11 Preferably, the two sets of horizontally corresponding lead screws 8 are connected by a chain 11. That is, the two sets of horizontally corresponding lead screws 8 are located on one side of the enclosure plate 1, and a second sprocket is provided on the lead screw 8. The lead screw 8 is connected to the chain 11 through the second sprocket. In this way, the two sets of lead screws 8 on the same side can rotate and thus synchronously drive the pull plate 2 to protrude from the enclosure plate 1. The chain 11 is slidably embedded in the side wall of the enclosure plate 1 and is symmetrically arranged along the center of the enclosure plate 1. A first sprocket is connected to the middle of the chain 11. 27. Two sets of first sprockets 27 are provided, each meshing with a corresponding chain 11. Of course, a stop bar is provided near the first sprockets 27 on the chain 11 to ensure that the chain 11 and the first sprockets 27 are always meshed. The two sets of first sprockets 27 are located between the two sets of chains 11. The bottom end of the first sprocket 27 is fixedly connected to the fourth bevel gear 26 through the first rotating shaft. When the lead screw 8 rotates, it drives the chain 11 to rotate. The rotation of the chain 11 causes the first sprockets 27 to rotate. The rotation of the first sprockets 27 drives the fourth bevel gear 26 to rotate.

[0040] Furthermore, since the hoarding panel 1 serves as a warning barrier, it is inevitable that external vehicles may collide with it. To ensure that the hoarding panel 1 can effectively cushion the impact by protruding from the pull plate 2 and the base plate 3, reducing the impact force, it is preferable that a gravity block 4 is slidably provided on the central sidewall of the hoarding panel 1. The outer sidewall of the gravity block 4 has multiple sets of blocking holes 30 arranged in an array at its center. The inner wall of the hoarding panel 1 is elastically fitted with protrusions 29 via a second spring. The end of the protrusion 29 near the gravity block 4 is slidably attached to the blocking hole 30. The gravity block 4 is slidably installed on the baffle plate 1 through the cooperation of the blocking hole 30 and the protrusion 29. The protrusion 29 prevents the gravity block 4 from falling off in windy weather and provides a certain resistance when the gravity block 4 moves and separates from the baffle plate 1. When an external vehicle hits the baffle plate 1, due to the large impact force of the external vehicle and the fact that the baffle plate 1 is fixed to the ground, the gravity block 4 will be impacted and thrown away from the baffle plate 1.

[0041] Furthermore, a blocking post 22 is provided at the top of the gravity block 4, and a horizontal plate 28 is fixedly connected to the top of the blocking post 22. A winding roller 24 is rotatably mounted at both ends of the top of the horizontal plate 28. A third bevel gear 25 is fixedly connected to the top center of the winding roller 24 via a second rotating shaft. The third bevel gear 25 and a fourth bevel gear 26 are in transmission engagement. A pull rope 23 is wound on the winding roller 24, and one end of the pull rope 23 passes through the blocking post 22 and is fixedly connected to the gravity block 4. The bottom end of the blocking post 22 slides against the blocking hole 30. The blocking post 22, winding roller 24, horizontal plate 28, and third bevel gear 25 are all located inside the side wall of the enclosure plate 1, and the winding roller 24 is elastically connected to the inner wall of the enclosure plate 1 via a third spring. In use, when the gravity block 4 is impacted and separates from the enclosure plate 1, the blocking post 22 and horizontal plate 28 will move downwards under the action of the third spring, subsequently causing the winding roller 24 and the third bevel gear 25 to... As wheel 25 moves downward, the third bevel gear 25 meshes with the fourth bevel gear 26, causing the gravity block 4 to detach from the enclosure 1 and fall to the ground. At this time, pulling the rope 23 causes it to unwind around the roller 24, making the roller 24 rotate. The rotation of the roller 24 causes the third bevel gear 25 to rotate, which in turn causes the fourth bevel gear 26 and the first sprocket 27 to rotate. The rotation of the first sprocket 27 drives the lead screw 8 to rotate through the chain 11. The rotation of the lead screw 8, through the cooperation of the collar 12, the pull rod 10, the toothed plate 18, and the transmission gear 19, pushes the pull plates 2 and the bottom plate 3 on both sides of the enclosure 1 to protrude from the enclosure 1, thereby supporting the enclosure 1. When the collar 12 moves downward, it also drives the fixing rod 14 to extend out of the fixing hole 15, thereby improving the stability and connection rigidity between adjacent enclosures 1, achieving a certain degree of buffering and blocking of the impact force generated by the vehicle, further reducing losses. It is simple and practical.

Claims

1. A hoarding warning device, comprising a hoarding panel, wherein a locking block and a locking slot are respectively provided at the left and right ends of the hoarding panel, the locking block and the locking slot being correspondingly adapted to each other; characterized in that, Two sets of pull plates are symmetrically slidably embedded in the front of the fence panel along the center, and the two sets of pull plates are also symmetrically arranged in the back of the fence panel along the center. A base plate is rotatably provided at the bottom of the two sets of pull plates. The base plate is slidably embedded in the bottom of the fence panel and is symmetrically arranged in the bottom center of the fence panel. A transmission mechanism is rotatably engaged on the side of the pull plate near the fence panel. A drive mechanism is driven and engaged at the top of the transmission mechanism. Both the transmission mechanism and the drive mechanism are provided on the fence panel. The driving mechanism includes a driving plate; a through hole is provided at the center of the top of the enclosure plate, the driving plate is slidably embedded in the through hole, connecting rods are fixedly connected to both ends of the driving plate, and rings are slidably connected to both ends of the connecting rods. A fan is fixedly connected to the rings through a support rod. Air inlets are provided on both sides of the top of the enclosure plate, and transmission gears are fixedly connected to both ends of the air inlets. The fan is sleeved around the transmission gears and is located inside the air inlets. The connecting rods are slidably attached to the inner wall of the enclosure plate, and a first bevel gear is fixedly connected to both ends of the center of the fan. The first bevel gear is in transmission cooperation with the transmission mechanism. The transmission mechanism includes lead screws that correspond one-to-one with multiple sets of pull plates; a collar is rotatably mounted on the lead screw, and a pull rod is rotatably mounted on the end of the collar near the pull plate via a support plate. The end of the pull rod away from the collar is rotatably engaged with the pull plate via the support plate. The rotation of the lead screw is located on the inner wall of the enclosure plate. A transmission rod is fixedly connected to the top of the lead screw. The transmission rod is located inside the air inlet, and the top of the transmission rod is engaged with a transmission gear. The two ends of the enclosure panel are slidably fitted with fixing rods, and the two ends of the enclosure panel are provided with fixing holes that are slidably adapted to the fixing rods. The end of the fixing rod near the lead screw is fixedly connected to a push plate. The top of the push plate is provided with an inclined surface, and the inclined surface faces away from the fixing rod. The end of the collar away from the pull rod is fixedly connected to a push block, and the push block is slidably fitted with the push plate.

2. The fencing warning device according to claim 1, characterized in that, The bottom end of the lead screw is fixedly connected to a transmission gear. Two adjacent sets of transmission gears are staggered vertically. The outer side of the transmission gear is meshed with a toothed plate. Two adjacent sets of toothed plates are staggered vertically and are respectively located on both sides of the transmission gear. The opposite ends of the two adjacent sets of toothed plates are respectively fixedly connected to two sets of base plates.

3. The fencing warning device according to claim 1, characterized in that, Two sets of square tubes and two sets of corrugated tubes are symmetrically arranged along the center between the two sets of base plates. An inner tube is elastically slidably connected inside the square tube. The two sets of base plates are connected by the square tube and the inner tube. The two ends of the corrugated tube are fixedly connected to the two sets of base plates.

4. A fencing warning device according to claim 3, characterized in that, The bottom plate is provided with a one-way valve and an air outlet at the end corresponding to the bellows.

5. A fencing warning device according to claim 1, characterized in that, A chain is connected between the two sets of corresponding lead screws. The chain is slidably embedded in the side wall of the enclosure and is symmetrically arranged along the center of the enclosure. A first sprocket is connected to the middle of the chain, and two sets of first sprockets are located between the two sets of chains. A fourth bevel gear is fixedly connected to the bottom end of the first sprocket through a first rotating shaft.

6. A fencing warning device according to claim 5, characterized in that, A gravity block is slidably disposed on the central side wall of the enclosure panel, and multiple sets of blocking holes are arranged in an array on the central side wall of the gravity block. A protrusion is elastically embedded on the inner wall of the enclosure panel, and the end of the protrusion near the gravity block slides and fits into the blocking hole.

7. A fencing warning device according to claim 6, characterized in that, A blocking post is provided at the top of the gravity block, and a horizontal plate is fixedly connected to the top of the blocking post. A winding roller is rotatably provided at both ends of the top of the horizontal plate. A third bevel gear is fixedly connected to the top center of the winding roller through a second rotating shaft. The third bevel gear and the fourth bevel gear are in transmission cooperation. A pull rope is wound on the winding roller. One end of the pull rope passes through the blocking post and is fixedly connected to the gravity block. The bottom end of the blocking post is slidably attached to the blocking hole. The blocking post, the winding roller, the horizontal plate, and the third bevel gear are all set inside the side wall of the enclosure plate, and the winding roller is elastically connected to the inner wall of the enclosure plate.

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