103results about How to "Reduce bumpy feeling" patented technology

The invention discloses a dust collection device for a road. The dust collection device comprises a speed reduction band. A water storage cavity is formed in the position, on the lower side of the speed reduction band, of a roadbed. A u-shaped structure is adopted by the water storage cavity. A containing opening is formed in the upper end of the water storage cavity. Drainage pipelines and dust fall pipelines communicating with the drainage pipelines are symmetrically arranged in the water storage cavity. An overflow opening is formed in one side of each drainage pipeline. The dust collectiondevice has the advantages that when the speed reduction band is automatically stored and restores, a middle piston greatly reduces load gravity through incompressible static fluid, acting force is transmitted to a left piston and a right piston, the left piston drives a dust collection piston through a left piston rod to do the exhaust and suction stroke, the right piston drives a water suction piston through a right piston rod, a synchronous rod and a driven piston rod to do the water suction and drainage stroke, non-raised too high dust on the road is sucked into the dust fall pipelines tobe subjected to dust fall treatment, the dust is prevented from polluting the environment, and the body health of pedestrians is protected.

The invention relates to an embedded double light emitting navigation aid lamp. The lamp comprises an upper shell and a lower shell matched with the upper shell, wherein a light source cavity is formed between the upper shell and the lower shell; a light source component and a prism component are fixedly arranged in the light source cavity; the upper shell comprises a face shell and a boss convexly arranged on the face shell; the height h of the boss is less than 6.35mm; a light source of the light source component is a light emitting diode (LED) light source; and two light emitting cavities are formed on the face shell, communicated with the light source cavity and symmetrically distributed on the face shell. The height of the boss of the upper shell of the embedded double light emitting navigation aid lamp is less than 6.35mm, so that bump feeling when an airplane takes off and lands can be effectively relieved through the low convex height, and the airplane more smoothly runs during take-off and landing; and meanwhile, the LED light source is used for replacing the traditional tungsten light source, so that the service life of the light source of the lamp is prolonged by more than 50 times, and the defect that the tungsten light source is easily broken due to impact force when the airplane lands can be effectively overcome.

The flapping-wing fling water automobile includes engine, double-blade air screw propeller, right and left hydraulic screw propellers, right and left wings, control system, safety lifesaving equipment, and four-wheel undercarriage, hanging damper and fuselage, with the wings being connected to the fuselage via mechanical and hydraulic mechanism. The present automobile is one traffic facility for land, water and air use simultaneously, and has high efficiency and maneuverability. Its wings may be folded for land running.

The invention discloses a suspension system, and a bogie assembly and a railway vehicle comprising the suspension system. The suspension system comprises a vehicle body connecting seat, an elastic element, a transverse vibration reducer and a vertical vibration reducer, wherein the vehicle body connecting seat is connected with the upper side of the elastic element; the transverse vibration reducer and the vertical vibration reducer are respectively hinged onto the vehicle body connecting seat and are vertical to each other; the elastic element, the transverse vibration reducer and the vertical vibration reducer can simultaneously ensure the stability of the railway vehicle in the up and down directions, left and right directions and front and back directions in the running process; in addition, the suspension system can achieve the vibration reduction buffer effects.

The invention belongs to the field of traffic, in particular to a deceleration strip with a warning function. The deceleration strip includes a decelerating press block, wherein decelerating pressingstrips are fixedly connected to the side walls of the two sides of the decelerating pressing block; a cavity is formed in the decelerating pressing block; two vertically-arranged fixing plates are fixedly connected into the cavity; and the cavity is divided into a decelerating cavity located in the middle and transmission cavities located in the two sides through the two fixing plates, and a horizontally-arranged sliding plate is connected into the decelerating cavity in a sealed and sliding mode. As the deceleration strip is provided with a flow limiting valve, when an automobile slowly passes through the deceleration strip, the flow limiting valve in the fixing plate exhausts the gas in the decelerating cavity in the process, so as to enable the rolling plate to descend by a large height, and then the bumping feeling of a driver can be effectively relieved; and when an automobile runs quickly, due to the fact that the flow limiting valve cannot exhaust gas in the decelerating cavityeasily in a short time, the rolling plate cannot descend obviously, and the obvious bumping feeling can be brought to the driver, so that the automobile speed of the driver can be reduced, and the road safety can be improved.

The invention discloses an angle steel non-slip ramp, and relates to a non-slip ramp, in particular to an angle steel non-slip ramp with a drainage function, wear resistance and a good non-slip effect. The angle steel non-slip ramp comprises a non-slip framework and a concrete layer, wherein the non-slip framework is fixed on the concrete layer. The angle steel non-slip ramp is characterized in that: the non-slip framework is formed by welding channel steel and angle steel; two pieces of channel steel are arranged on the two sides of the non-slip framework respectively and used as vertical keels; a plurality of pieces of V-shaped angle steel are welded on the channel steel on the two sides and used as horizontal keels; and fine stone concrete is filled in gaps of the non-slip framework and flush with openings of the angle steel, so that the surface of the ramp is flat. The angle steel non-slip ramp is scientific in design, has a simple structure and is convenient to use, the wear of the non-slip framework can be reduced, and the service life is prolonged; and accumulated water on the surface of the ramp can be effectively reduced, and the phenomenon that the surface of the ramp is slippery because the accumulated water is excessive is avoided.

The invention provides an automatic adjustment and overload warning system for an intelligent deceleration strip. The intelligent deceleration strip comprises a mounting groove; a deceleration strip body is arranged above the mounting groove; the automatic adjustment and overload warning system comprises an automatic adjustment module, an overload warning module, a control center, a server and a monitoring center. According to the automatic adjustment and overload warning system for the intelligent deceleration strip provided by the invention, the functions of deceleration and overload warningare combined together, not only the function of intelligent adjustment according to the vehicle speed can be realized, the bumpy feeling can be reduced when the low-speed vehicle passes through the deceleration strip, but also the intelligent detection of vehicle loads can be realized; when the overload phenomenon is discovered, the vehicle related information is automatically uploaded to the monitoring center, thereby greatly improving the working efficiency of overload detection.

The invention belongs to the field of municipal road facilities, in particular to a self-adjusting speed bump with high safety performance. The speed bump includes a base, and a sliding groove is formed in the upper surface of the base. The side wall of the sliding groove is in sliding connection with a speed reduction block. The speed reduction block is fixedly connected with the bottom face of the sliding groove through an elastic air bag. A plurality of lifting rods are fixedly connected to the lower surface of the speed reduction block. The bottom face of the sliding groove is rotationallyconnected with a plurality of sleeves. The sleeves sleeve the lifting rods and are in threaded connection with the lifting rods. Two rotating pipes are fixedly connected to the side wall of each sleeve, permanent magnet blocks are slidably connected into the rotating pipes, and the permanent magnet blocks are fixedly connected with the sleeve through reset springs. Magnet rings are fixedly connected to the lower surface of the speed reduction block. According to the invention, a vehicle with a slower speed can safely and comfortably pass through the speed bump, and a more obvious bumping feeling is given to the vehicle with a higher speed, so that a driver is forced to slow down the speed, a guarantee is provided for safe driving on a road, and a good warning effect is achieved.

The invention relates to an embedded double light emitting navigation aid lamp. The lamp comprises an upper shell and a lower shell matched with the upper shell, wherein a light source cavity is formed between the upper shell and the lower shell; a light source component and a prism component are fixedly arranged in the light source cavity; a light source of the light source component is a tungsten light source; the upper shell comprises a face shell and a boss convexly arranged on the face shell; the height h of the boss is less than 6.35mm; and two light emitting cavities are formed on the face shell, communicated with the light source cavity and symmetrically distributed on the face shell. The height h of the boss of the embedded double light emitting navigation aid lamp is less than 6.35mm and is lower than second-level or first-level convex height, the low-height light emitting cavities can effectively relieve bump feeling when an airplane takes off and lands, and the airplane more smoothly runs during take-off and landing, so that the tire wear of the airplane is reduced, the service life of the lamp is prolonged, and the safety of the airplane which runs during take-off and landing is greatly increased.

Provided is a tide guard bar, including pedestals, a base, standing rods, a guard bar body, and a driving device. The number of the pedestals is at least two. The pedestals are embedded in a road. Thetop surface of the pedestal is flushed with the top surface of the road. Each pedestal is provided with two L-shaped guide grooves which are vertical to a road direction and are symmetric to each other. The left side and the right side of the base are respectively provided with a guide block matched with the guide groove. The guide block is inserted into the guide groove, so as to connect the base with the pedestal. The standing rods are fixed on the base. An upper end portion of the standing rod is provided with a controller used to control the driving device. Two ends of the guard bar bodyare respectively connected with the two standing rods. The driving device is connected with the base. Under the condition that single-direction lanes need to be added, the tide guard bar can drive thebase to move along the guide grooves, to drive the guard bar body on the base to move together, so the number of lanes on the direction in which traffic flow is high is increased, and the number of lanes on the direction in which traffic flow is relatively low is reduced, and traffic jam conditions are effectively relieved.

The invention relates to the technical field of vehicles, in particular to a multifunctional bicycle rear seat, which includes a foldable rear seat, a first support frame, a second support frame and a beam, and the foldable rear seat consists of a back board, a seat board, a second Composed of two rotating shafts and a first hinge, a back cushion is fixed on the top of the back board, a seat cushion is fixed on the top of the seat board, the back board and the seat board are rotatably connected by the first hinge, and the back cushion and the seat cushion ensure the seating position of the rear row. Comfortable, the automatically adjustable backrest is user-friendly while ensuring the overall appearance. There is a storage box fixedly connected under the seat board, which effectively increases the storage space. The foldable rear seat is fixed in front of the There are handrails, which are convenient for people to hold and hold to ensure safety. The bottom surface of the seat board is fixedly connected with a first support frame, a second support frame and a third support frame from right to left, and the first support frame and the second support frame The top is fixed with a shock-absorbing spring, which effectively reduces the bumpy feeling during driving.

The invention discloses an LED light-emitting structure and a spike with the same. The LED light-emitting structure comprises a transparent shell (1), an LED luminous body (2) with a light condensingelement, a separation body (3) and an air layer (4), the LED luminous body (2) is packaged in the transparent shell (1) through the separation body (3), light emitted by the LED luminous body (2) is mainly condensed by the condensing element, incident by an inner inclined surface (1b), refracted by a side wall with a certain thickness, emitted by an outer inclined surface (1a), emitted in the horizontal direction, mainly emitted in the upward direction and supplemented by emitted in the horizontal direction, and the LED luminous body (2) emits light in the horizontal direction to generate a local structure capable of generating upward displacement. The horizontal emergent light intensity ratio is high, the light energy utilization rate is high, the structural design allowance delta H and the power supply design allowance are improved, the structural strength is high, the forming process of the shell is facilitated, the light emitting intensity ratio in the horizontal direction and theupward direction are reasonably distributed so as to be more suitable for different emphasis points of vehicles and pedestrians, and the diversified requirements of roads are well met.

The invention relates to an infusion chair device, and more particularly to a practical infusion chair device. The technical problem to be solved by the invention is to provide a practical infusion chair device with good comfort and practicability. In order to solve the above technical problem, the invention provides a practical infusion chair device, which comprises a bottom plate and the like, wherein first support rods are symmetrically arranged on the left and right sides of the bottom of the bottom plate, a first fixing block is connected with the bottom of the first support rod, a wheelis arranged at the bottom the fixed block, the middle of the bottom plate is rotatably connected with a backup plate, and an auxiliary device and a second support rod are arranged on the right side ofthe top of the bottom plate. The practical infusion chair device achieves the effects of good comfort and practicability. The device can effectively reduce the feeling of bumps when passing the uneven ground, and the angle of the backup plate can be adjusted by the auxiliary device so as to make the patients more comfortable to carry out the infusion. The device has simple operation and high reliability.

The invention relates to an energy-saving underground comprehensive pipe rack. The energy-saving underground comprehensive pipe rack comprises a pipe rack main body which is located below a road and extends in the length direction of the road; a plurality of bases are fixed to the lower end surface of a top plate of the pipe rack main body; the bases are rotatably connected with a plurality of rotating shafts with horizontally set axes; fan blades coaxially rotate with the rotating shafts; exhaust pipes which are connected with the fan blades in a sleeving manner are also suspended on the piperack main body; two ends of each of the exhaust pipes respectively communicate with the interior and the exterior of a pipe rack; a plurality of speed reducing blocks slide up and down on the upper end surface of the road; the lower end surfaces of the speed reducing blocks are connected with gear racks which penetrate through the top plate; the rotating shafts are connected with gears which areengaged with the gear racks in the sleeving manner; unidirectional rotating devices are arranged between the gears and the rotating shafts; resetting devices for jacking up the speed reducing blocks are arranged between the speed reducing blocks and the road; the speed reducing blocks drive the fan blades to rotate when slide downward. By adopting the technical scheme, the use of a driving motor is reduced compared with the prior art; moreover, power does not need to be supplied in a subsequence using process; the energy-saving underground comprehensive pipe rack is low in cost and energy-saving, and is more friendly to the ecological environment.

The invention discloses a subway train inbound speed control method and positioning monitoring system. The subway train positioning monitoring system comprises positioning terminal equipment located in a subway platform area, and a train automatic control system located at the control center; the positioning terminal equipment comprises a radar speed tachymeter, a first position monitoring unit, asecond position monitoring unit, a third position monitoring unit, a camera unit, a main controller and a wireless transmission unit; position information, train speed information and stop real-timeimage information of a subway train in the inbound stopping process are collected through the positioning terminal equipment; the train automatic control system conducts three-stage PID train speed adjusting and computing according to the collected subway train position information and the train speed information, sends a subway train speed adjusting control command, and controls the subway trainto stop within the safe range stably, and the bumping feel is relieved; and in addition, a subway train all-dimensional stop image is generated through the information, and the stop state of the subway train is simulated.

The flapping-wing fling water automobile includes engine, double-blade air screw propeller, right and left hydraulic screw propellers, right and left wings, control system, safety lifesaving equipment, and four-wheel undercarriage, hanging damper and fuselage, with the wings being connected to the fuselage via mechanical and hydraulic mechanism. The present automobile is one traffic facility for land, water and air use simultaneously, and has high efficiency and maneuverability. Its wings may be folded for land running.

The invention discloses a walking aid for cardiothoracic surgery rehabilitation nursing, and belongs to the technical field of medical nursing instruments. The walking aid comprises moving wheels, shock absorbers are fixedly connected to the top ends of the moving wheels, first front supporting legs are fixedly connected to the top ends of the shock absorbers, a fixing block is fixedly connected to the left side walls of the first front supporting legs, an infusion rod is fixedly connected to the top end of the fixing block, second front supporting legs are connected to the top end of the first front supporting leg in a matched mode, and a fixing plate is fixedly connected to the top end of the infusion rod. According to the walking aid for cardiothoracic surgery rehabilitation nursing, the height and the left-right width of the walking aid can be adjusted according to the body type of a patient, and the walking aid is convenient for the patient to use; and meanwhile, when the patientfeels tired, the chair can be provided for the patient, the patient can have a rest conveniently, the using effect is good, the bumping feeling can be reduced when the patient uses the walking aid, the comfort of the user is improved, and the patient can use the walking aid conveniently.

The invention relates to an embedded single light-emitting airport pilot lamp, which comprises an upper casing and a lower casing matched with the upper casing. A single light-emitting cavity is arranged on the upper casing, a light source cavity is formed between the upper casing and the lower casing, and a light source component and a prism component communicated with the light-emitting cavity are fixedly arranged in the light source cavity. The prism component comprises a prism; the upper casing comprises a face casing and a boss convexly arranged on the face casing; and the height h of the boss is smaller than 6.35mm. The light source component comprises an LED light source, and an included angle alpha is formed between the central axis of the LED light source and a light entrance surface of the prism. By the aid of the boss lower than 6.35mm, bump of an airplane in take-off and landing can be effectively relieved, and the airplane takes off, lands and rolls more smoothly. Besides, the LED light source replaces a traditional tungsten light source, the service life of the light source of the lamp is prolonged by more than 50 times, and the shortcoming of easiness in crushing of a lamp with the tungsten light source due to impact force of the airplane in landing can be effectively overcome.

The invention relates to an embedded single light-emitting airport pilot lamp, which comprises an upper casing and a lower casing matched with the upper casing. A single light-emitting cavity is arranged on the upper casing, a light source cavity is formed between the upper casing and the lower casing, and a light source component and a prism component communicated with the light-emitting cavity are fixedly arranged in the light source cavity. The prism component comprises a prism; the upper casing comprises a face casing and a boss convexly arranged on the face casing; and the height h of the boss is smaller than 6.35mm. The light source component comprises an LED light source, and an included angle alpha is formed between the central axis of the LED light source and a light entrance surface of the prism. By the aid of the boss lower than 6.35mm, bump of an airplane in take-off and landing can be effectively relieved, and the airplane takes off, lands and rolls more smoothly. Besides, the LED light source replaces a traditional tungsten light source, the service life of the light source of the lamp is prolonged by more than 50 times, and the shortcoming of easiness in crushing of a lamp with the tungsten light source due to impact force of the airplane in landing can be effectively overcome.

The invention discloses a suspension type automobile speed reducing device. The suspension type automobile speed reducing device comprises a road trough, a speed reducing block, winders and knitted belts, wherein the road trough is in a strip shape and is transversely arranged on the surface of a road in sinking mode, the plurality of winders are fixedly arranged on the inner side surface of the road trough, and the opposite winders on the two sides inside the road trough are connected through the knitted belts; the speed reducing block is arranged on the upper surfaces of the knitted belts in an erecting mode, the speed reducing block is of a cavity structure, the lower half part of the speed reducing block is in a long-strip square shape, and the upper half part of the speed reducing block is in an isosceles trapezoid shape; and the properties of the fast-speed rigidity and the slow-speed flexibility of the automobile safety belt winder structure are utilized, when an automobile slowly passes through the speed reducing device, the weight of the automobile presses the speed reducing block downwards into the road trough, the automobile passes through the speed reducing device stably, when the automobile rapidly passes through the speed reducing device, the winders are self-locked, the knitted belts cannot be pulled out of the winders, so that the speed reducing block is kept in a state exposed out of the ground, and a warning of bumping is given to the running automobile. The suspension type automobile speed reducing device completely utilizes the mechanical structure, is good in stability and firm and durable, so that the speed reducing device can be more humanized, the bumping to the automobile is reduced, and the normal speed reducing of the automobile can be ensured as well.

The invention discloses a traffic deceleration strip device capable of extending and decelerating. The device comprises a road, a first sliding groove with an upward opening is formed in the top wallof the road. First sliding blocks are slidably connected into the first sliding groove in a bilateral symmetry mode. A cambered surface block is arranged between the left and right first sliding blocks; the end wall, away from the cambered surface block, of the first sliding block is connected with the first sliding groove through a first spring; the top wall of the first sliding block is fixedlyprovided with a slope block slidably connected with the top wall of the road; a second sliding block is fixedly arranged on the bottom wall of the cambered surface block; second sliding grooves with openings back to the second sliding block are symmetrically formed in the left and right end walls of the cambered surface block; the second sliding groove is in sliding connection with the first sliding block. Third sliding grooves are formed in the bottom walls of the left-right first sliding grooves. Two fourth sliding grooves with upward openings are symmetrically formed in the bottom wall of the sliding shaft in the front-back direction, bumping buffer mechanisms are arranged in the fourth sliding grooves, buffer extending speed reducing mechanisms are symmetrically arranged on the left end walls and the right end walls of the fourth sliding grooves, the speed reducing section of the speed bump can be prolonged, the speed reducing effect of the traffic speed bump is enhanced, and subsequent vehicle slipping can be avoided.

The invention discloses a spliced type intelligent child carrier and a splicing method thereof. The spliced type intelligent child carrier comprises a box body. A fixing mechanism is suspended in the box body through a suspension support. A splicing mechanism used for taking of children is arranged in the fixing mechanism. A splicing locating case is arranged in the splicing mechanism and provided with a first seat, a second seat and a splicing flat board. The first seat and the second seat are provided with a temperature sensor and a humidity sensor. A control box is further arranged in the box body. The first seat and the second seat are distributed symmetric about the center of the splicing flat board so that the space of the splicing flat board can be more effectively used by the two children. By the adoption of the spliced type intelligent child carrier, the splicing mechanism is arranged to achieve multiple functions, so that the purpose that the children can take the carrier and have a rest conveniently is achieved; a spring damping system imitating that of an automobile is adopted so that the children can better fall asleep; and a full-suspension system is adopted in the splicing mechanism so that the jolting feeling caused by the splicing mechanism can be relieved when the ground is rugged.

The invention relates to the technical field of function robots, and discloses a rescue robot. The robot comprises a bearing table, a rotating inner shaft is arranged on the edge f one side of the upper end of the bearing table, a camera is arranged at the upper end of the rotating inner shaft, a lens is arranged on the outer surface of one side of the camera, a fire extinguishing part is arrangedon one side of the camera, a signal receiver is arranged at the front end of the fire extinguishing part, a supporting rod is arranged at the position, close to the edge of the other side of the bearing table, of one side of the signal receiver, a rotating shaft is arranged on the inner side of the upper end of the supporting rod in a penetrating manner, and a mechanical arm is arranged on one side of the rotating shaft. According to the rescue robot, through a fixing part and a connecting column, a caterpillar band disc can be connected to form a whole structure, it is ensured that in the complex terrain jolting environment, the robot cannot fall apart, and therefore the robot can continue to carrying out tasks, through a foam pressure bottle of the fire extinguishing part, fire extinguishing foams and air pressure can be stored, and area small-area fire extinguishing work can be achieved.

The invention relates to the technical field of shock absorbers, and discloses a high-end multifunctional shock absorber based on the principle of repulsion between like poles. The high-end multifunctional shock absorber comprises a shock absorber main body, a shock absorber tray is arranged at the bottom of the shock absorber main body, a clamping spring is movably connected to the outer side ofa shock absorber clamping opening, mounting blocks are fixedly connected to the inner side of the shock absorber tray, buffer springs are movably connected to the outer sides of the mounting blocks, first electromagnets are movably connected to the ends, away from the mounting blocks, of the buffer springs, and water outlet channels are movably connected to the positions, on the outer side of theshock absorber clamping opening, of the inner side of the shock absorber tray. According to the high-end multifunctional shock absorber based on the principle of repulsion between like poles, the evenly-distributed water outlet channels are formed in the inner side of the shock absorber tray so that accumulated water can be drained in time, and the problems that a traditional shock absorber tray is installed at the bottom of a vehicle, and consequently accumulated water in a tray often cannot be drained in the past, and then the tray and the shock absorber are damaged are solved.

The invention provides a chassis structure and a magnetic levitation track operating vehicle. The chassis structure comprises a vehicle frame, first damping assemblies, driving axles, wheels and driving devices; one sides of the first damping assemblies are connected with the vehicle frame, and the first damping assemblies are located on the lower part of the vehicle frame; the driving axles are connected with the other sides of the first damping assemblies and comprise driving shafts; the wheels are mounted on the driving shafts; and power output shafts of the driving devices are connected with the driving axles so as to drive the wheels to rotate. According to the chassis structure, the first damping assemblies are arranged between the vehicle frame and the driving axles and provide a reliable damping effect in the vertical direction, the stability in the operating process of the magnetic levitation track operating vehicle is ensured, the bumping sensation of working equipment and operators on the magnetic levitation track operating vehicle is reduced, the working environment of the working equipment is effectively improved, and the working accuracy of the working equipment s improved, so that the operators obtain the better comfort degree in the working process.

The invention discloses a self-balancing wheelchair suitable for stair climbing. The self-balancing wheelchair comprises a seat, a seat suspension beam, a hub and hub suspension beams. The seat is clamped to the seat suspension beam through a supporting column, the seat suspension beam is connected with the two sub suspension beams through a suspension beam shaft, and the hub suspension beams areconnected with the hub through a wheel axle; a rotating base and a motor are arranged at the side faces of the hub suspension beams, and a screw rod of the motor is sleeved with a fixing sleeve on thesupporting column; carbon brush frames are arranged at the two ends of the hub suspension beams, the carbon brush frames are provided with two carbon brushes with opposite electricities, the inner side of the hub is provided with a carbon brush ring corresponding to the carbon brushes, the outer side of the hub is provided with a wire wiring head, a cycle valve, an air pump and an air pump assembly, and the hub wraps rubber tires. By adopting a seat inclination adjusting system and a tire air pressure adjusting system, the horizontal state of the seat and the negative pressure state of the tires are adjusted separately, the self-balancing control function of the wheelchair is achieved, the comfort level and the safety of the wheelchair are improved, and the wheelchair can adapt to going upstairs or downstairs and crossing obstacles and various other terrains, and is suitable for large-range popularization.

The ventilation seat for the new energy automobile comprises a seat sliding rail and a seat body, trapezoidal ventilation holes distributed at equal intervals are formed in the outer wall of the top of the seat body, and anti-skid protrusions distributed at equal intervals are arranged on the outer wall of the top of the side, close to the trapezoidal ventilation holes, of the seat body. A water retaining mechanism is arranged on the inner wall of the top of the chair seat and comprises five to ten flow guide plates, the same vertical plate is arranged on the outer walls of the opposite sidesof every two adjacent flow guide plates, trapezoidal holes are formed in the outer walls of the vertical plates, and a threaded hole is formed in one side of the outer wall of the bottom of the chairseat. The water retaining mechanism can retain water and guide water spots into the liquid accumulation bag, air flow can flow from the trapezoidal holes, ventilation of the seat cannot be affected, acircuit in the seat is prevented from being short-circuited and burnt out by the water spots, the anti-skid protrusions can increase the gap between the hip of a user and the seat, and the comfort ofthe user is improved. Therefore, the ventilation effect of the seat can be improved.

A road speed reducing device utilizing centrifugal force to control vehicle speed relates to the technical field of roads and comprises a road, a mounting seat is movably connected to the top of the road, uniformly distributed clamping grooves are formed in the inner wall of the mounting seat, a rotating shaft is fixedly connected to the middle of the mounting seat, and a connecting plate is fixedly connected to the outer side of the rotating shaft. The outer side of the connecting plate is fixedly connected with a first spring. According to the road speed reduction device for controlling thevehicle speed through the centrifugal force, through cooperative use of the clamping blocks and the clamping grooves, when a vehicle rapidly passes through the speed reduction device, the rotating blocks rapidly rotate and generate large centrifugal force, the clamping blocks are thrown out, the clamping grooves are connected in a clamped mode, rotation of the rotating blocks is limited, the vehicle feels jolt, and the vehicle is reminded to decelerate; when a vehicle slowly passes, the rotating block can automatically rotate and contract into the ground, the top of the rotating block is madeto be flush with the top of a road, and therefore the vehicle can stably pass, the bumping feeling of the vehicle is effectively reduced, and the comfort degree when the vehicle passes is improved.

The invention relates to the field of medical instruments, and discloses a patient transfer wheeled bed. The patient transfer wheeled bed is characterized in that a bed plate, bed head support frames, bed tail support frames and reinforcing ribs; one end of each bed head support frame is connected with a bed head of the bed plate through a first movable part, and the other end of each bed head support frame is connected with a first rolling wheel; one end of each bed tail support frame is movably connected with a bed tail of the bed plate through a second movable part, the other end of each bed tail support frame is connected with a second rolling wheel, and a first sliding groove is formed in each bed tail support frame; the reinforcing ribs are located under the bed plate, second sliding grooves are formed in the reinforcing ribs, one end of each reinforcing rib is fixedly connected with the corresponding bed head support frame, and the other end of each reinforcing rib is connected with the corresponding bed tail support frame by penetrating through fixing bolts of the corresponding first sliding groove and second sliding groove. According to the structure, the patient transfer wheeled bed keeps stable, therefore a patient can lie flat on the wheeled bed, and medical staff can push the wheeled bed to transport the patient; after the wheeled bed reaches an assigned place, the patient transfer wheeled bed does not keep stable any more by loosening the fixing bolts, the patient can independently slide down the patient transfer wheeled bed or easily get down the wheeled bed with the help of the medical staff.

The invention discloses a multifunctional bicycle, which comprises a seat, a rotating spring is installed on the lower part of the seat, a vehicle frame is installed on the lower part of the rotating spring, a turntable is installed on the vehicle frame, and a pedal, a rotating shaft is installed on the turntable, an air jet pipe is installed on the lower part of the turntable, a piston is arranged in the air jet pipe, the piston is connected with the turntable through a rotating shaft, tires are installed on the front and rear of the vehicle frame, and A handle is provided, the lower part of the handle is provided with a lamp, the lower part of the lamp is provided with a storage battery, the lamp is connected with the storage battery through a wire, and a storage box is provided in the middle of the vehicle frame.