A monitoring device for road safety monitoring

Abstract

The application discloses a monitoring device for road safety monitoring and relates to the technical field of road monitoring, which comprises stand columns installed on both sides of a road, a support plate fixed between the two stand columns, top symmetrical installation of rope winding discs, one of the stand columns is provided with a motor installed on the top, the output end of the motor is connected with the rope winding disc, two pull ropes are rotationally connected on the two rope winding discs, a moving table is slidably connected on the support plate, the two ends of the pull ropes are wound around the rope winding discs and are fixed on the two sides of the moving table respectively, a fixed disc is fixed on the moving table, a rotating column with a camera is rotationally connected to the fixed disc, and a partition plate is arranged on the circumferential surface of the rotating column; a piston assembly is fixed on the outer circumferential surface of the fixed disc, and the fixed disc and the piston cylinder are both filled with liquid butter; a guide rail plate one with an arc fixed plate is fixed on one end of the support plate close to the piston assembly; in working, the pull ropes pull the moving table, the moving table drives the piston assembly to move on the guide rail plate one, the liquid butter is extruded into the fixed disc to push the partition plate, the camera is rotated, and thus the road safety monitoring and control are realized.

Description

Technical Field

[0001] This invention relates to the field of road monitoring technology, and in particular to a monitoring device for road safety monitoring. Background Technology

[0002] Currently, most road surveillance equipment uses a fixed position and rotates to capture images. When there are many vehicles, the images are easily blocked by vehicles in front and behind, resulting in the loss of the target and inaccurate images.

[0003] Publication number CN117167612B discloses a road monitoring system, including a crossbeam, a movable base, a drive assembly, a monitoring device, and a transmission assembly. The crossbeam is positioned above the road; the movable base is movably mounted on the crossbeam and can move along its width; the drive assembly drives the movable base to move along its width; the monitoring device is rotatably mounted on the movable base with a vertical axis, and is used to monitor targets located on the opposite side; the transmission assembly connects the monitoring device and the crossbeam respectively. When the movable base moves along its width, the transmission assembly converts the linear motion of the monitoring device relative to the crossbeam into rotational motion of the monitoring device relative to the movable base, thereby maintaining the monitoring device in a predetermined position facing the road. The monitoring device can avoid obstructions and selectively monitor the predetermined area of ​​the road from the front or side, thereby improving the monitoring effect.

[0004] In actual use, the aforementioned road monitoring system moves frequently on highways. The gear transmission is sensitive to dust and corrosive environments and is prone to wear due to lubrication failure. With long-term use, the accuracy will decrease, resulting in inaccurate shooting. Summary of the Invention

[0005] This application provides a monitoring device for road safety monitoring, which solves the technical problems in the prior art where gear transmission is sensitive to dust and corrosive environments, is prone to wear due to lubrication failure, and its accuracy decreases with long-term use, resulting in inaccurate shooting. By pulling a rope to move the moving platform, the moving platform drives the piston assembly to move on the guide rail plate and squeeze liquid grease into the fixed plate to push the partition and rotate the camera, thereby improving environmental adaptability and ensuring the accuracy of the camera pointing towards the monitored target position P.

[0006] This application provides a monitoring device for road safety monitoring, including columns installed on both sides of the road, a support plate between the columns, and rope reels symmetrically mounted on the tops of the columns. A motor is mounted on one column, with its output fixed to the rope reel. Pull ropes are rotatably connected to both rope reels. A movable platform with a fixed plate on its top is slidably connected to the support plate. The two ends of the pull ropes pass over the rope reels and are fixed to both sides of the movable platform. A rotating column with a camera is rotatably connected to the movable platform, and a partition is provided on the circumference of the rotating column. A piston assembly is mounted on the outer circumference of the fixed plate, and both are filled with liquid grease. A guide rail plate with an arc-shaped fixed plate is mounted and fixed to one end of the support plate. Pulling the pull ropes moves the movable platform and causes the piston assembly to move on the guide rail plate. The liquid grease is pressurized and fills the fixed plate, pushing the partition and causing the camera to rotate.

[0007] The guide rail plate is equipped with a rope limiting canopy to limit the pull rope; the moving platform is rectangular and has multiple rollers recessed at the bottom; the top of the support plate is symmetrically equipped with limiting blocks near the rope winding disc; the limiting blocks also include guide rail posts, one end of which is fixed to one of the limiting blocks, and the other end passes through the moving platform and is fixed to another limiting block, thereby limiting the displacement of the moving platform.

[0008] The piston assembly also includes a piston cylinder, a piston rod, a fixed ball, and a spring. The piston cylinder is filled with liquid grease. One end of the piston cylinder is fixed to the outer circumferential surface of the fixed plate. One end of the piston rod is slidably connected inside the piston cylinder. The other end of the piston rod is fixed to a fixed ball. One end of the spring is fixed to one end of the piston cylinder, away from the fixed plate, and the other end is fixed to the fixed ball, so that the fixed ball can always maintain contact with the guide plate.

[0009] The fixed disk has an inner cavity. The partition includes a shielding plate and a fixing plate. The shielding plate is fixed on the circumferential surface of the rotating column, and a sealing gasket is fixed at the end of the shielding plate that contacts the inner circumferential surface of the fixed disk. A fixing plate is fixed on the inner circumferential surface of the fixed disk. A sealing gasket is fixed at the end of the fixing plate that contacts the rotating column, and the fixing plate is perpendicular to the transverse axis of the support plate. A sealing ring is provided at the vertical rotation point of the rotating column. The shielding plate and the fixing plate divide the inner cavity of the fixed disk into chamber A and chamber B. Chamber A is filled with liquid grease and is connected to the piston cylinder.

[0010] The piston rod, camera, and guide rail are configured to satisfy the following relationship: Where X is the displacement of the piston rod and C is the lateral movement of the camera; the guide plate is designed with the center line of the road as the axis and the two ends are designed with opposite arcs, so that the fixed ball contacts the guide plate and drives the piston rod to move inside the piston cylinder, thereby keeping the camera device facing the monitoring target position P.

[0011] Furthermore, a secondary piston cylinder is fixed to the outer circumference of the fixed disk, with the piston cylinder installed near the bottom of the fixed disk and the secondary piston cylinder installed near the top of the fixed disk and communicating with chamber B. The secondary piston cylinder includes a secondary piston rod, a secondary fixed ball, and a secondary spring. One end of the secondary piston rod is slidably connected inside the secondary piston cylinder, and the other end of the secondary piston rod is fixed to the secondary fixed ball. One end of the secondary spring is fixed to one end of the secondary piston cylinder and away from the fixed disk, and the other end is fixed to the secondary fixed ball. Liquid grease is contained in chamber B and the secondary piston cylinder. A second guide rail plate is also fixed to the fixed plate and is located on top of the first guide rail plate. The second guide rail plate has an opposite curvature to the fixed plate, and its curvature is one-third that of the fixed plate, which is used to buffer the instantaneous pressure of the liquid grease in the piston cylinder filling chamber A. A constant pressure tube is fixedly connected to the outer circumference of the fixed disk, and a constant pressure cylinder is fixed to the constant pressure tube and communicates with the constant pressure tube. A weight is slidably connected inside the constant pressure cylinder.

[0012] Furthermore, both the fixed ball and the secondary fixed ball are rotatably connected to a rotating wheel.

[0013] Furthermore, the A chamber and piston cylinder 241 are filled with liquid grease and small steel balls.

[0014] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0015] By pulling a rope to move the mobile platform, the platform moves the piston assembly on the guide rail and squeezes liquid grease into the fixed plate, pushing the partition and causing the camera to rotate. This improves environmental adaptability and ensures the accuracy of the camera's orientation towards the monitored target location P. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a monitoring device for road safety monitoring according to the present invention.

[0017] Figure 2 This is a structural diagram of a guide rail plate for a monitoring device used for road safety monitoring according to the present invention.

[0018] Figure 3 This is a schematic diagram of the mobile station structure of a monitoring device for road safety monitoring according to the present invention.

[0019] Figure 4 This is a schematic diagram of the shielding plate structure of a monitoring device for road safety monitoring according to the present invention.

[0020] Figure 5 This is a diagram showing the distribution of chamber A in a monitoring device for road safety monitoring according to the present invention.

[0021] Figure 6This is a schematic diagram of a camera in the middle of a road, which is part of a monitoring device for road safety monitoring according to the present invention.

[0022] Figure 7 This is a schematic diagram of a camera on the edge of a road, representing a monitoring device for road safety monitoring according to the present invention.

[0023] Figure 8 This is a graph showing the relationship between the maximum lateral movement C and D of the camera in a monitoring device for road safety monitoring according to the present invention.

[0024] Figure 9 This is a diagram showing the shape of the guide rail plate corresponding to the piston displacement X of the camera's lateral movement C from zero meters to fifteen meters in a monitoring device for road safety monitoring according to the present invention.

[0025] Figure 10 This is a structural diagram of the auxiliary piston column of a second embodiment of a monitoring device for road safety monitoring according to the present invention.

[0026] Figure 11 This is a structural diagram of the auxiliary fixed ball in Embodiment 2 of the monitoring device for road safety monitoring according to the present invention.

[0027] Figure 12 This is a structural diagram of the weight block of a second embodiment of a monitoring device for road safety monitoring according to the present invention.

[0028] Figure 13 This is a schematic diagram of the rotary structure of a third embodiment of a monitoring device for road safety monitoring according to the present invention.

[0029] Figure 14 This is a diagram showing the distribution of small steel balls in a fourth embodiment of a monitoring device for road safety monitoring according to the present invention.

[0030] In the picture:

[0031] 100. Column; 101. Road; 110. Support plate; 120. Rope winding reel; 130. Motor; 140. Rope limiting canopy; 150. Fixing plate; 160. Guide rail plate one; 121. Pull rope; 200. Moving platform; 201. Limiting block; 202. Guide rail column; 210. Fixing plate; 211. Rotating column; 212. Shielding plate; 213. Fixing plate; 214. Chamber A; 21 5. Chamber B; 220. Camera; 230. Roller; 240. Piston assembly; 241. Piston cylinder; 242. Piston column; 243. Fixed ball; 244. Spring; 250. Secondary piston cylinder; 251. Secondary piston column; 252. Secondary fixed ball; 253. Secondary spring; 254. Guide rail plate II; 260. Constant pressure tube; 261. Constant pressure cylinder; 262. Weight; 270. Rotary wheel. Detailed Implementation

[0032] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0033] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0035] Example 1: As Figures 1 to 9 As shown, this application discloses a monitoring device for road safety monitoring, comprising columns 100 installed on both sides of a road 101, a support plate 110 between the two columns 100, and rope winding reels 120 symmetrically mounted on the top of the two columns 100. A motor 130 is mounted on one of the columns 100, and the output end of the motor 130 is fixedly connected to the rope winding reel 120. Pull ropes 121 are rotatably connected to the two rope winding reels 120. A movable platform 200 with a fixed plate 210 on its top is slidably connected to the support plate 110. The two ends of the pull ropes 121 pass around the rope winding reels 120 and are fixed. On both sides of the mobile platform 200, rotating columns 211 with cameras 220 are rotatably connected. The circumferential surface of the rotating columns 211 is provided with partitions. The outer circumferential surface of the fixed plate 210 is equipped with piston assemblies 240, both of which are filled with liquid grease. One end of the support plate 110 is fixed with a guide rail plate 160 with an arc-shaped fixed plate 150. The mobile platform 200 is pulled by the pull rope 121, which drives the piston assembly 240 to move on the guide rail plate 160. The liquid grease is pressurized and fills the fixed plate 210, pushing the partitions and causing the camera 220 to rotate.

[0036] The guide rail plate 160 is equipped with a rope limiting shed 140 for limiting the pull rope 121; the moving platform 200 is rectangular and has multiple rollers 230 recessed at the bottom; the top of the support plate 110 is symmetrically equipped with limiting blocks 201 near the rope winding disc 120; the limiting block 201 also includes a guide rail post 202, one end of which is fixed to one of the limiting blocks 201, and the other end passes through the moving platform 200 and is fixed to another limiting block 201, thereby limiting the displacement of the moving platform 200.

[0037] The piston assembly 240 also includes a piston cylinder 241, a piston rod 242, a fixed ball 243, and a spring 244. The piston cylinder 241 is filled with liquid grease. One end of the piston cylinder 241 is fixed to the outer circumferential surface of the fixed plate 210. One end of the piston rod 242 is slidably connected inside the piston cylinder 241. The other end of the piston rod 242 is fixed to the fixed ball 243. One end of the spring 244 is fixed to one end of the piston cylinder 241 and away from the fixed plate 210, and the other end is fixed to the fixed ball 243, so that the fixed ball 243 can always maintain contact with the guide rail plate 160.

[0038] The fixed disk 210 has an inner cavity. The partition includes a baffle plate 212 and a fixing plate 213. The baffle plate 212 is fixed on the circumferential surface of the rotating column 211, and a sealing gasket is fixed at the end of the baffle plate 212 that contacts the inner circumferential surface of the fixed disk 210. The fixing plate 213 is fixed on the inner circumferential surface of the fixed disk 210. A sealing gasket is fixed at the end of the fixing plate 213 that contacts the rotating column 211, and the fixing plate 213 is perpendicular to the transverse axis of the support plate 110. A sealing ring is provided at the vertical rotation point of the rotating column 211. The baffle plate 212 and the fixing plate 213 divide the inner cavity of the fixed disk 210 into chamber A 214 and chamber B 215. Chamber A 214 is filled with liquid grease and is connected to the piston cylinder 241.

[0039] The piston rod 242, camera 220, and guide rail plate 160 are configured to satisfy the following relationship: Where X is the displacement of piston column 242 and C is the lateral movement of camera 220; the guide plate 160 is designed with the center line of road 101 as the axis and the two ends are designed with opposite arcs, so that the fixed ball 243 contacts it and drives piston column 242 to move in piston cylinder 241, thereby keeping the camera 220 facing the monitoring target position P.

[0040] The width (E) of road 101 is 30 meters; the location of the monitored target is P, and D is the distance from point P observed by camera 220 on the center line of road 101, which is 15 meters; the maximum lateral movement C of camera 220 is 15 meters (from the center of road 101 to the edge); the turning angle range A (max) of camera 220 is ±45°; the initial stroke of piston rod 242 in piston cylinder 241 is 0.2 meters.

[0041] Target relationship: The displacement X of piston rod 242 and the lateral movement C of camera 220 satisfy the following conditions. , where K is the scaling factor.

[0042] Determine the scaling factor K: When C = 15 meters, A .

[0043] The required displacement of the piston rod at this time is X = 0.2 meters, which is 0.2 = K × 0.7854, where K .

[0044] The equation of the curve is:

[0045]

[0046] Table 1 shows the calculation results of the displacement X of the piston rod 242 corresponding to the lateral movement C of the camera 220 from 0 meters to 15 meters.

[0047]

[0048] The calculation results in Table 1 are used to reflect the shape of the guide plate 160, such as Figure 9 As shown.

[0049] Piston cylinder 241 has a diameter of 50mm and an area of ​​[missing information]. Volume change of liquid butter: (0.392 liters).

[0050] Camera 220 angle conversion: 0.392 liters drive camera 220 to rotate 45°, meaning each liter of liquid butter corresponds to 45° / 0.392. .

[0051] Specific implementation: When the camera 220 detects a large vehicle at the center of road 101, the motor 130 is started to drive the rope reel 120 to rotate, causing the pull rope 121 to pull the moving platform 200 to one end (the edge of road 101). During this process, the fixed ball 243 contacts the guide rail plate 160 and drives the piston column 242 to move into the piston cylinder 241. The piston column 242 squeezes the liquid grease in the piston cylinder 241 into the A chamber 214, thereby driving the shielding plate 212 to rotate. The rotation of the shielding plate 212 drives the rotating column 211 to rotate, and the rotation of the rotating column 211 drives the camera 220 to rotate, thus enabling the camera 220 to detect the monitoring target position P. When the pull rope 121 pulls the moving platform 200 to the other end (the edge of road 101), the camera 220 will rotate in the other direction.

[0052] Beneficial effects: By pulling the moving platform 200 with the pull rope 121, the moving platform 200 drives the piston assembly 240 to move on the guide plate 160 and squeeze the liquid grease into the fixed plate 210, pushing the partition and causing the camera 220 to rotate; improving environmental adaptability and ensuring the accuracy of the camera 220 in facing the monitoring target position P.

[0053] Example 2: When the moving stage 200 drives the baffle plate 212 to move rapidly and turn into position, due to the viscosity of the liquid grease and the slow movement speed, the instantaneous pressure when rapidly filling the liquid grease in the piston cylinder 241 into the A chamber 214 is too high, which may damage the sealing performance of the sealing gasket; In view of the above technical problem, this application proposes the following technical solution, specifically:

[0054] like Figures 10 to 12 As shown, a secondary piston cylinder 250 is also fixed on the outer circumference of the fixed disk 210. The piston cylinder 241 is installed near the bottom of the fixed disk 210, and the secondary piston cylinder 250 is installed near the top of the fixed disk 210 and communicates with chamber B 215. The secondary piston cylinder 250 includes a secondary piston post 251, a secondary fixed ball 252, and a secondary spring 253. One end of the secondary piston post 251 is slidably connected inside the secondary piston cylinder 250, and the other end of the secondary piston post 251 is fixed to the secondary fixed ball 252. One end of the secondary spring 253 is fixed to one end of the secondary piston cylinder 250 and away from the fixed disk 210, and the other end is fixed to the secondary fixed ball 252. Liquid grease is contained in chamber B 215 and the secondary piston cylinder 250.

[0055] The fixed plate 150 is also fixed with a second guide rail plate 254, which is located on top of the first guide rail plate 160. The second guide rail plate 254 has an opposite curvature to the fixed plate 150, and its curvature is one-third of that of the fixed plate 150. It is used to buffer the instantaneous pressure of liquid grease in the piston cylinder 241 filling the A chamber 214.

[0056] A constant pressure tube 260 is fixedly connected to the outer circumference of the fixed disk 210. A constant pressure cylinder 261 is fixed on the constant pressure tube 260 and is connected to the constant pressure tube 260. A weight 262 is slidably connected inside the constant pressure cylinder 261.

[0057] One or more technical solutions provided in this application have at least the following technical effects or advantages.

[0058] When the piston rod 242 squeezes the liquid grease in the piston cylinder 241 into the A chamber 214, the auxiliary fixed ball 252 contacts the guide plate 254 and drives the auxiliary piston rod 251 to extract part of the liquid grease in the B chamber 215, buffering the instantaneous pressure of the liquid grease in the piston cylinder 241 filling the A chamber 214 and preventing the sealing gasket from failing; and when the pressure in the A chamber 214 is too high, it will push the weight 262 upward, and then the weight 262 will slowly descend due to gravity, relatively maintaining the pressure in the A chamber 214.

[0059] Example 3: Prolonged rapid friction between the fixed ball 243 and the auxiliary fixed ball 252 and the guide rail plate 160 and guide rail plate 254 may cause deformation of the fixed ball 243 and the auxiliary fixed ball 252, resulting in delayed compression of the piston rod 242 and the auxiliary piston rod 251. To address the above-mentioned technical problem, this application proposes the following technical solution:

[0060] like Figure 13 As shown, both the fixed ball 243 and the auxiliary fixed ball 252 are rotatably connected to a rotating wheel 270.

[0061] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0062] By utilizing the rotatable wheel 270 to contact the guide plate 160 and the guide plate 254, the compression delay of the piston rod 242 and the auxiliary piston rod 251 is reduced.

[0063] Example 4: The resistance of strong winds may further compress the liquid butter, leading to a response delay; this application proposes the following technical solution to address the above-mentioned technical problem, specifically:

[0064] like Figure 14 As shown, the A chamber 214 and piston cylinder 241 are filled with liquid grease and small steel balls.

[0065] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0066] This technology enables the camera 220 to respond quickly during rotation, and uses a small steel ball to push the shield 212, allowing the liquid grease to expand and reducing the pressure of the liquid grease. This further prevents the sealing gasket from failing due to excessive instantaneous pressure.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A monitoring device for road safety monitoring, comprising two posts (100) installed on both sides of a road (101), a support plate (110) installed between the two posts (100), and a winding reel (120) symmetrically installed on the top of the two posts (100), wherein one of the posts (100) is provided with a motor (130), and an output end of the motor (130) is fixedly connected with the winding reel (120), characterized in that, Two winding ropes (120) are rotationally connected with a pull rope (121), a support plate (110) is slidably connected with a moving table (200) on which a top fixed disc (210) is fixed, the pull rope (121) passes through the winding rope (120) and is fixed on the two sides of the moving table (200), a rotating column (211) with a camera (220) is rotationally connected with the fixed disc (210), and a partition plate is arranged on the circumferential surface of the rotating column (211); a piston assembly (240) is arranged on the outer circumferential surface of the fixed disc (210), and the fixed disc (210) and the piston assembly (240) are both filled with liquid butter; one end of the support plate (110) is fixedly connected with a guide rail plate (160) of an arc fixed plate (150), the moving table (200) is pulled through the pull rope (121) and drives the piston assembly (240) to move on the guide rail plate (160), the liquid butter is pressed into the fixed disc (210) to push the partition plate, and the camera (220) is rotated; The piston assembly (240) further comprises a piston cylinder (241), a piston column (242), a fixed ball (243) and a spring (244), the piston cylinder (241) is filled with liquid butter, one end of the piston cylinder (241) is fixed on the outer circumferential surface of the fixed disc (210), one end of the piston column (242) is slidably connected in the piston cylinder (241), the other end of the piston column (242) is fixedly connected with the fixed ball (243), one end of the spring (244) is fixed on one end of the piston cylinder (241) and away from the fixed disc (210), and the other end of the spring (244) is fixed on the fixed ball (243); The fixed disc (210) is provided with an inner cavity, the partition plate comprises a shielding piece (212) and a fixed piece (213), the shielding piece (212) is fixed on the circumferential surface of the rotating column (211), and one end of the shielding piece (212) in contact with the inner circumferential surface of the fixed disc (210) is fixedly connected with a sealing gasket; the fixed piece (213) is fixed on the inner circumferential surface of the fixed disc (210), one end of the fixed piece (213) in contact with the rotating column (211) is fixedly connected with a sealing gasket, and the fixed piece (213) is perpendicular to the transverse axis of the support plate (110); the rotating column (211) is provided with a sealing ring at the upper and lower rotating positions; the shielding piece (212) and the fixed piece (213) divide the inner cavity of the fixed disc (210) into an A chamber (214) and a B chamber (215), the A chamber (214) is filled with liquid butter and is in communication with the piston cylinder (241); The piston column (242), the camera (220) and the guide rail plate (160) are configured to satisfy the following relationship: ， Wherein, X is the displacement of the piston column (242), and C is the horizontal movement of the camera (220); the guide rail plate (160) is designed with opposite arcs at both ends with the center line of the road (101) as the axis, so that the fixed ball (243) is in contact to drive the piston column (242) to move in the piston cylinder (241), so that the camera (220) equipment is kept facing the monitoring target position P.

2. A monitoring device for road safety monitoring as claimed in claim 1 wherein, The guide rail plate one (160) is provided with a rope limiting shed (140) for limiting the pull rope (121); the moving table (200) is rectangular, and the bottom is concave and provided with a plurality of rollers (230); the top of the support plate (110) is provided with limiting blocks (201) symmetrically near the winding rope disc (120); the guide rail column (202) is fixed to one of the limiting blocks (201) at one end and fixed to the other limiting block (201) at the other end.

3. A monitoring device for road safety monitoring as claimed in claim 1 wherein, The outer circumference of the fixed disc (210) is fixed with a secondary piston cylinder (250), the piston cylinder (241) is close to the bottom of the fixed disc (210), the secondary piston cylinder (250) is close to the top of the fixed disc (210) and communicates with the B chamber (215), the secondary piston cylinder (250) comprises a secondary piston column (251), a secondary fixed ball (252) and a secondary spring (253), one end of the secondary piston column (251) is slidably connected in the secondary piston cylinder (250), the other end of the secondary piston column (251) is fixed with the secondary fixed ball (252), one end of the secondary spring (253) is fixed to one end of the secondary piston cylinder (250) and away from the fixed disc (210), and the other end is fixed to the secondary fixed ball (252); the B chamber (215) and the secondary piston cylinder (250) are filled with liquid butter.

4. The monitoring device for road safety monitoring as claimed in claim 1 wherein, The fixed plate (150) is further fixed with a guide rail plate two (254) located at the top of the guide rail plate one (160); the guide rail plate two (254) and the fixed plate (150) have reverse curvature, and the curvature of the guide rail plate two (254) is one third of the fixed plate (150).

5. The monitoring device for road safety monitoring as claimed in claim 1 wherein, The outer circumference of the fixed disc (210) is fixed with a constant pressure pipe (260) in communication, the constant pressure pipe (260) is fixed with a constant pressure cylinder (261) in communication with the constant pressure pipe (260); the constant pressure cylinder (261) is slidably connected with a weight (262).

6. A monitoring device for road safety monitoring as claimed in claim 3 wherein, The fixed ball (243) and the secondary fixed ball (252) are rotatably connected with a rotating wheel (270).

7. A monitoring device for road safety monitoring as claimed in claim 1 wherein, The A chamber (214) and the piston cylinder (241) are filled with liquid butter and small steel balls.

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