The vehicle deceleration device provided by the present invention can perform adaptive lifting and lowering adjustment according to the driving speed of the vehicle, so as to maintain the blocking posture when the vehicle passes at a high speed, reduce the comfort of the driver, and reduce the speed of the vehicle. When passing at an hourly speed or slowly, the obstruction can be gradually eliminated, and the vehicle with a lower chassis can be allowed to pass, and the design is more user-friendly; hydraulic oil, etc.
 see attached figure 1 , several deceleration devices are evenly spaced along the width direction of the road, and adjacent deceleration devices constitute an obstacle-free area 10. Normally, the length of the obstacle-free area 10 should be slightly larger than the width of the vehicle; the size of the obstacle-free area 10 is limited, The driver must make adaptive adjustments to intersect it. When the vehicle is running fast, the driver's adjustment time is limited, and the vehicle cannot be calibrated with reference to the barrier-free area, so the wheels will touch the deceleration device with a high probability; When the vehicle is passing at a lower speed and the vehicle is close to the deceleration device, the driver spends more time calibrating the vehicle, and has a higher probability of passing through the barrier-free area to ensure the barrier-free passage of the vehicle; The advantage of interval distribution is that it facilitates the passage of two-wheeled electric vehicles, motorcycles, and bicycles, solves the troubles of the existing speed bumps on such vehicles, and improves the safety of driving.
 see attached figure 2 , an annular seamless transition type vehicle deceleration device, which includes a support housing 210, a lift platform 220 slidably arranged on the upper end of the support housing 210, and a support housing 210 is also installed below the lift platform 220 and used for induction lifting The moving speed sensing mechanism of the descending speed of the platform 220; when the lifting platform 220 slides down rapidly, the moving speed sensing mechanism can respond quickly and limit the continuous sliding of the lifting platform 220; when the lifting platform 220 slowly slides down, the moving speed sensing mechanism can allow The lifting platform 220 sinks to the maximum position; the support shell 210 is buried below the road surface, the lifting platform 220 protrudes from the road surface and can be adjusted up and down according to the speed of the vehicle. The distance from the road surface is large, and the transition between the wheels from the road surface to the top surface of the lifting platform 220 is currently conventionally adopted in the way of arc surface transition, that is, the upper end surface of the lifting platform 220 adopts a spherical arrangement or an arc surface arrangement. That is, the greater the distance the lift platform 220 sinks in the vertical direction, the greater the interval between the lift platform 220 and the opening of the support housing 210 , which may generate larger bumps of the vehicle and easily damage the tires at the edge of the interval.
 In order to solve the problem of space between the lifting platform 220 during the lifting process, the present invention adopts a multi-ring sleeve structure. The ring sleeve c220c outside the ring sleeve b220b, the ring sleeve d220d sleeved on the outside of the ring sleeve c220c, the upper end surface of the central sliding table 220a is provided with a step a220aa, the ring sleeve b220b is provided with a step groove b220bb matching the step a220aa, The upper end surface of the sleeve b220b is provided with a step b220ba, the ring sleeve c220c is provided with a step groove c220cb that matches the step b220ba, the ring sleeve d220d is provided with a step groove d220db that matches the step c220ca, and the upper end surface of the ring sleeve d220d is provided with a step d220da The upper open end of the support shell 210 is provided with a step groove a that matches the step d220da, and the support shell 210 is also slidably matched with a pressing plate 210a that can move in the vertical direction, and the lifting platform 220 is raised in the upward direction. In this state, the upper surface of the pressing plate 210a is in contact with the bottom of the center slide 220a, the bottom of the ring b220b, the bottom of the ring c220c, and the bottom of the ring d220d, and the center slide 220a is topped vertically in the vertical direction. The heights of the surface, the top surface of the ring sleeve b220b, the top surface of the ring sleeve c220c, and the top surface of the ring sleeve d220d are successively reduced.
 Since the lift table 220 adopts a multi-ring sleeve structure, it can adapt to pressure in multiple directions. The wheels will sequentially apply pressure to the ring sleeve d220d, the ring sleeve c220c, the ring sleeve b220b, and the central sliding table 220a, and the ring sleeve d220d sinks to At the maximum, the upper surface of the ring sleeve d220d will be level with the road surface. Similarly, when the ring sleeve c220c, the ring sleeve b220b, and the center slide 220a sink to the maximum, the upper surface will be level with the road surface, thereby effectively eliminating the lifting and lowering. The interval created by the platform during the sinking process.
 During the sinking process of the ring sleeve d220d, the ring sleeve c220c, the ring sleeve b220b, and the center sliding table 220a, the space at the lower part thereof will be compressed to avoid the generation of a closed space. The ventilation holes 220ab.
 see attached Figure 6-9 As shown, the speed sensing mechanism includes a jacking mechanism 40 and a pipe 30 connected to the jacking mechanism 40. The jacking mechanism 40 includes a cylinder 420 and a piston slidably arranged in the cylinder 420 and slidable in the vertical direction 410a, the upper end face of the piston 410a is connected with a piston rod 410 arranged in a vertical direction and connected with the pressing plate 210a, and a jacking spring 420b for jacking up the piston 410a is also installed in the cavity 420a of the cylinder 420; the pipe 30 It consists of an incoming pipe 310 and an outgoing pipe 320 which are respectively connected to the cavity 420a. The medium flow of the incoming pipe 310 per unit time is greater than the medium flow of the outgoing pipe 320 per unit time. A one-way valve a310a for the medium in the pipeline to flow to the cylinder cavity, and a one-way valve b320a for controlling the flow of the medium in the cylinder cavity to the outflow pipeline is installed on the outgoing pipeline 320 .
When the vehicle passes through the lifting platform at a higher speed, the contact time between the vehicle and the lifting platform is shorter and the kinetic energy exerted is larger. When the vehicle passes through the lifting platform at a lower speed, the contact time between the vehicle and the lifting platform is relatively long. In principle, when the pressing plate 210a slides down rapidly and the piston rod slides synchronously, the medium accumulated in the cavity cannot be discharged through the outlet pipe 320 in the first time, so that the pressure of the medium accumulated in the cavity increases instantly and restricts the piston , the downward movement of the piston rod; when the pressing plate 210 slowly slides down, the medium stored in the cavity squeezed by the piston is slowly discharged through the outlet pipe, which can realize the downward movement of the piston rod to the greatest extent.
 see attached Figure 9 As shown, the inlet pipe 310 and the outlet pipe 320 are respectively connected to the interface of the tee pipe 330, and the other interface of the tee pipe 330 is connected to the cavity 420a of the cylinder block 420; the number of openings is reduced and the cost is reduced.