143 results about "Stair-climbing wheelchair" patented technology

A self-propelled battery-powered wheelchair replaces an ordinary wheelchair and provides improved access to homes. The wheelchair includes stair climbing, slope climbing, and reclining while requiring only minimal driver skill and strength. Operation on level ground is similar to the operation of a conventional wheelchair. Support for normal operation is provided by a rear caster and wheels on the front corners. Its compact width and length enable negotiating narrow doorways and turning in small spaces. To ensure stability on stairs, moveable skids are mounted to the four corners of the wheelchair. Parallelogram linkages move the front skids down and forward during climbing. Another parallelogram linkage moves the caster and rear skids up and at an angle during climbing. The wheelchair is steerable on stairs as needed to align with the stair path and accommodate slightly spiraling stairs. The wheelchair accommodates stair steps of different riser heights and tread lengths. A pair of spoked or spider wheels with small wheels at the ends of the spokes are rotably mounted to the sides of the wheelchair. The spider wheels engage the stairs to propel and stabilize the wheelchair during climbing of stairs. Methods are provided to monitor and control the pitch attitude of the wheelchair and nearness of wheelchair supporting components to the stairs. Motion and control are provided by electric motors, sensors, a computer, and driver inputs. Propulsion power for conventional level operation, slope climbing, and stair climbing operation is transmitted through the same motors and wheels.

A stair-climbing wheelchair has a pair of track assemblies that can be placed in an operative drive mode to propel the wheelchair along ascending and descending paths of travel relative to an obstacle such as a stairway, curb, or the like. Each track assembly includes a guide member with rollers at opposite ends thereof carrying an endless cleated belt. The guide member is arched between its end sections thereby permitting the endless belt to deflect upwardly between the rollers when the endless belt engages an obstacle such as a step, curb or the like. This permits a smooth gradual transition of the wheelchair onto and/or off the top step of a staircase. Preferably, each track assembly also includes an inclined tail section having a separate endless cleated belt. The track assemblies can also be utilized in connection with remote control and/or unmanned motorized vehicles.

The invention relates to a stair climbing wheelchair, which comprises a wheelchair stair climbing device, a wheelchair and walking wheels, wherein the wheelchair stair climbing device comprises a power part, a gear chain power train, and a stair climbing structure, and the power part comprises a power source and a power source driving gear; the gear chain power train comprises a device framework, a main drive axle and a pair of driving gear chain mechanisms, and the device framework comprises a framework body and a pair of gear chain supports; the main drive axle comprises a main drive shaft and a power source driven gear, and the driving gear chain mechanism comprises I-class and II-class main drive gears and main drive rockers I and II; the stair climbing structure comprises a pair of stair climbing inner foot stands and outer foot stands, and the stair climbing inner foot stand comprises an inner foot stand linking rod, a telescopic inner foot stand front leg and a telescopic inner foot stand back leg; the stair climbing outer foot stand comprises an outer foot stand linking rod, a telescopic outer foot stand front leg and a telescopic outer foot stand back leg. A wheel chain train is used to drive the two sets of four-legs foot stands to make alternant forward rising and falling movement, and the stair climbing wheelchair is simple and reliable in structure, and is safe and convenient to use.

The invention provides an intelligent horizontal-attitude stair-climbing wheelchair and a rotary stair-climbing method. The intelligent horizontal-attitude stair-climbing wheelchair comprises an upper plate, a switching plate and a lower plate, wherein the upper plate is fixedly connected with a chair, and rear wheels are arranged on the lower side of the chair. The chair is connected with front legs through a front leg lifting system, and front wheels are arranged on the front legs. The front leg lifting system lifts the front legs to a horizontal attitude, and four liftable outer legs are fixed to the lower side of the upper plate. The upper plate and the switching plate are connected through a steering shaft and rotate relatively to each other through the steering shaft, and the switching plate and the lower plate are connected with each other through a leading screw and realize relative rectilinear motion through the leading screw. Four liftable inner legs are fixed on the lower side of the lower plate, and the inner legs are arranged on the inner side of the outer legs. The intelligent horizontal-attitude stair-climbing wheelchair runs on a level ground fast or slow, and climb stairs to realize two functions.

The invention discloses a rapidly-dismounted electric stair-climbing wheelchair, belonging to a transportation tool which can continuously travel on the flat ground and continuously climb stairs. The stair-climbing wheelchair comprises a wheelchair frame part capable of adjusting the distance between a front wheel set and a rear wheel seat, a detachable folding wheel chair frame and a seat part, a composite rear wheel set part, a stair-climbing driving part, an anti-forward support part, a seat lifting part and a system power supply part, wherein a direct current (DC) motor arranged under a wheelchair frame is connected with a speed reducer for driving a transmission shaft; and the composite rear wheel set part is symmetrically arranged at the left side and the right side of a shaft, so that functions of climbing stairs and travelling on the flat ground can be realized. The wheelchair frame is connected with the seat part by a rapidly-dismounted part, so that the whole wheel chair can be arranged in a tail box of a small bus after being rapidly disassembled, and is convenient to carry and transport.

The invention discloses a variable wheel type stair climbing wheelchair which comprises a frame, a seat and a wheel train mechanism. The seat is arranged on the frame, the wheel train mechanism comprises front wheels and a variable-form rear wheel system, the front wheels are planet wheels and arranged on two sides of the front end of the frame respectively, the variable-form rear wheel system is arranged on two sides of the rear end of the frame, comprises variable-form rear wheels arranged on a drive shaft and include a driving wheel and a driven wheel, the driving wheel can be relatively and rotatably connected with the driven wheel, both the driving wheel and the driven wheel comprise a hub and three equally distributed arcs, and the three arcs are arranged on the outer surfaces of the hub in a surrounding manner. By the aid of the variable wheel type stair climbing wheelchair, the variable-form rear wheels are mutually matched with the planet type front wheels, stability and safety of the wheelchair are improved, and the wheelchair is simply and conveniently operated by a user.

An extension/retraction cylinder stops or starts tilting the platform of the stair-climbing wheelchair carrier based on a detection signal from an inclination sensor provided in the crawler drive unit. When the crawler drive unit is detected to be not tilted, the tilting motion of the platform is stopped at an intermediate angle (e.g. 20°) of a maximum preset angle (e.g. 40°). When the crawler drive unit is detected to be tilted, the platform is tilted up to the maximum preset angle, and as soon as the crawler drive unit is detected not to be tilted after tilting, the platform is driven so as to decrease its inclination angle relative to the crawler drive unit. Thus, a comfortable and usable stair-climbing wheelchair carrier can be provided.

The invention discloses a wheelchair capable of climbing stairs continuously. The wheelchair comprises a wheelchair frame, a seat, and trundles arranged on front and rear feet of the wheelchair frame, wherein a turning wheel is movably and rotatably bolted on the wheelchair frame and above a rotating shaft of each trundle; a climbing arm is fixedly arranged on each turning wheel; the lowest point in a rotating track of the tail end of each climbing arm is lower than the lowest point of each trundle; and the turning wheels are matched in a synchronous rotation way. With adoption of the technical scheme, the climbing arms can perform unidirectional and continuous climbing actions by utilizing the continuous rotation of the turning wheels, so that the efficiency of stair climbing is enhanced; and compared with a stair climbing wheelchair in background technology, the wheelchair disclosed by the invention is more simplified in structure, and electric control can be realized in the whole course of the wheelchair, so that a feeble and sick patient can operate the wheelchair well.

The invention discloses a deformation walking wheel for a stair climbing wheelchair, comprising a wheel hub component, a wheel disc component and a hydraulic driving component, wherein the wheel hub component and the wheel disc component are connected to form a wheel through the hydraulic driving component. According to the deformation walking wheel, the power provided by hydraulic pressure drives a telescopic rod to extend or retract, so as to realize the sliding deformation of a wheel rim, so that the diameter adjustment of the whole walking wheel is realized. The deformation walking wheel adopts a similar triangular diameter adjusting mode to realize the wheel deformation, so as to realize the leveling of a seat; a wheel disc is self-assembled by modular reconstructed parts; with the combination of the hydraulic driving component and the wheel disc component, the walking wheel converts the step changing movement of the center of the wheel gravity of into gentler movement in the moving process, so that the obstacle crossing is realized.

The invention relates to a backrest and footrest swingable electric dual-mode stair-climbing wheelchair provided with a wheelchair frame. Universal caster mounting holes and footrest mounting columns are arranged at the two bottom corners of the front of the wheelchair frame respectively, two universal casters are mounted in the universal caster mounting holes respectively, a footrest is mounted on each footrest mounting column, two wheelchair wheels driven by motors are mounted on two sides of the rear portion of the wheelchair frame respectively, mounting shaft holes of a crawler-type stair climbing device are arranged in the rear of the wheelchair frame, and connection of armrests on two sides of the upper portion of the wheelchair frame and the wheelchair frame is set in a pluggable type; connection between a backrest of the wheelchair frame and the wheelchair frame is set in a backrest front-back swingable mode. An electric or manual push-pull rod is arranged between the backrest and the wheelchair frame. An LED illuminating lamp is arranged each armrest. The wheelchair is applicable to the aged and the disabled unable to move freely, and has the advantages of scientific and reasonable structural design, stable operation, easiness in operation and security and reliability.

The invention relates to a vehicle for the disabled, particularly to an off-road stair-climbing wheelchair capable of realizing wheel and track switching and being driven independently. The off-road stair-climbing wheelchair capable of realizing wheel and track switching comprises a seat mechanism, a seat balancing mechanism, a frame, a four-wheel driven traveling mechanism, a lifting mechanism, a track traveling mechanism, a universal wheel traveling mechanism and the like which are connected with one another. The wheelchair mainly comprises two traveling mechanisms, namely, the track traveling mechanism and the four-wheel driven traveling mechanism, mutual switching usage is realized through the lifting mechanism between the two traveling mechanisms, the wheelchair can go up and down stairs, run on flat grounds, sand beaches and snowfields, climb slopes, cross countries and cross ditches and steps as well as be conveniently and automatically switched to the universal wheel traveling mechanism mode for traveling on a flat and smooth rod surface. The purpose that the disabled and the aged who are difficult in walking can have one off-road stair-climbing wheelchair which is complete in function, mature in technology and capable of being driven independently is achieved actually.

The invention discloses an intelligent stair climbing wheelchair with an effect of automatic distance measurement. The wheelchair comprises a travelling and climbing mechanism, a wheelchair rack, a seat, an automatic mass center regulation mechanism, and a battery pack, wherein the seat is arranged inside the wheelchair rack due to a seat suspension mechanism, and the seat suspension mechanism is connected with the wheelchair rack through a spherical hinge; the travelling and climbing mechanism comprises a star wheel mechanism and an automatic mass center regulation support; the star wheel structure is connected with the wheelchair rack by virtue of the mass center automatic regulation support; the star wheel structure has three star wheel expansion links which are uniformly distributed in circumference; the free end of each star wheel expansion link is provided with a star wheel, a servo motor is used for driving the star wheel expansion links to rotate around a transmission shaft, and star wheels rotate freely around an assembly shaft. When the intelligent stair climbing wheelchair is on a flat ground, two star wheels are contacted with the ground; when the wheelchair is used for climbing stairs, the servo motor is used for driving the star wheel expansion links to rotate according to a control signal sent by a control system processor, so that stair climbing is realized.

A stair climbing wheelchair carrier operable by an unassisted wheelchair user is provided. The carrier includes a crawler drive unit and a carrying unit. The carrying unit includes a carrier main frame whose position is adjustable up and down relative to the crawler drive unit, an anchor unit for securely holding the back of the wheelchair set in a wheelchair mounting position on the carrier main frame, and a holding and moving unit for holding the wheelchair on the ground in the front part of the crawler drive unit and for moving the wheelchair to the wheelchair mounting position that is in the rear part of the crawler drive unit as the wheelchair user tilts the wheelchair backward by shifting the body weight. This stair climbing wheelchair carrier allows even a wheelchair with a relatively short front to back length to be mounted in the rear part of the carrier for stable transport up and down stairs.

The invention discloses a wheel-type stair-climbing wheelchair designed for solving the problems of complex structures, poor safety and the like of existing stair-climbing wheelchairs. The wheel-type stair-climbing wheelchair comprises a seat, a driving device and a transmission mechanism connected with the driving device, wherein front and back planet wheels are arranged on two sides of the transmission mechanism respectively, and the front and back planet wheels on two sides of the transmission mechanism are connected with the seat through an inverse parallelogram adjusting mechanism; and when the wheelchair climbs stairs, the angle of the seat is adjusted by the inverse parallelogram adjusting mechanism. According to the wheel-type stair-climbing wheelchair, during stair climbing, the angle of the seat can be adjusted by the inverse parallelogram adjusting mechanism, the center-of-gravity position of a user can be further adjusted, the balance of the user is guaranteed, and the safety of the wheel-type stair-climbing wheelchair during stair climbing is improved; in addition, the inverse parallelogram adjusting mechanism is simple and reliable in structure, so that the production cost of the wheel-type stair-climbing wheelchair is reduced greatly.

The invention relates to an electric stair climbing wheelchair. The electric stair climbing wheelchair comprises a frame, armrests, a driving wheel, a driving motor, a steering wheel and a steering wheel controller. A stair climbing driving mechanism comprises a tooth ring, a telescopic tooth electric push rod, telescopic teeth, a hub connecting flange, an eccentric circle, a limiting plate and a shaft sleeve. The tooth ring is installed on the inner side of a hub of the driving wheel through a connecting angle. Telescopic holes are machined in the tooth ring and evenly distributed in the tooth ring, and the telescopic teeth are installed in the telescopic holes of the tooth ring. The eccentric circle is installed on a motor shaft of the driving motor and limited by the limiting plate and the shaft sleeve. A telescopic auxiliary wheel mechanism comprises an auxiliary wheel carrier, a shear type telescopic frame, an electric push rod, a lower guide rod, an auxiliary wheel, an upper guide rod and an auxiliary wheel. The driving wheel can better exert climbing driving force through the telescopic teeth to drive the stair climbing wheelchair to finish stair climbing operation, the electric wheelchair has the upstairs going, downstairs going and normal ride-instead-of-walk driving functions, the problem that old people or people unable to move freely drive the wheelchair and go upstairs and downstairs alone is solved, and the use performance and safety of the electric stair climbing wheelchair are improved.

The invention provides a laser ranging based stair climbing wheelchair control system suitable for the technical field of wheelchairs. The system includes a laser ranging module used for detecting a first distance between a track and stairs with laser; a seat balancing module used for controlling steering and rotation speed of a seat push rod motor so as to adjust seat posture of the stair climbing wheelchair according to the inclination angle of the seat; a Hall control module used for controlling the operation of a motor of the stair climbing wheelchair according to control commands currently input into the Hall controller. At the same time, the invention also provides a laser ranging based stair climbing wheelchair control method. Therefore, by using laser ranging for improving wheelchair barrier avoiding performance and through controlling the wheelchair during the stair climbing process, bumping of the wheelchair during the stair climbing process is avoided.

The invention discloses an electric stair climbing wheelchair, which comprises a chair body, planetary wheel groups, a driving mechanism and chair surface adjusting mechanisms, wherein a planetary wheel group is arranged on left and right sides below a chair surface respectively, and is connected integrally through a transmission shaft; a wheel disc frame of each planetary wheel group is a regular geometric plate or a radioactive column; a planetary wheel is arranged at a distal end; the chair surface adjusting mechanisms are arranged one after the other below the chair surface; the main body of each chair surface adjusting mechanism has an oblong-shaped frame structure; the back end of each chair surface adjusting mechanism is hinged on the back part of a chair frame; and the middle front part of each chair surface adjusting mechanism is hinged with the chair frame through a push-pull rod. The electric stair climbing wheelchair disclosed by the invention has a relatively simple structure, is convenient to operate, runs stably, and is safe and reliable.

The invention discloses a multifunctional stair-climbing wheelchair which comprises a wheelchair device, a chassis driving device, a stair-climbing star wheel, a lifting device, a direction device and a control device. The chassis driving device comprises a walking motor, a stair-climbing motor, a stair-climbing wheel variable shaft, a main inner shaft, a main outer shaft, a first walking chain wheel, a plurality of second walking chain wheels, a first stair-climbing chain wheel, a second stair-climbing chain wheel, a plurality of adjusting elastic wheels, wheels, a walking chain and a stair-climbing chain. The multifunctional stair-climbing wheelchair solves the problem that a stair-climbing wheelchair in the prior art is inconvenient to use, high in destructive effect, difficult to maintain, high in maintenance cost, complex in structure and low in safety factor and cost performance. The multifunctional stair-climbing wheelchair has the advantages that the wheelchair is simple in structure, stair climbing and ground motions do not interfere with each other, users can freely park and turn when they are on the flat ground or go upstairs, and the wheelchair is cheap in construction cost, convenient to maintain, good in safety performance, simple and convenient to operate, good in guiding performance and wide in applied range.

The invention relates to a full-automatic stair-climbing wheelchair scooter which is provided with a frame. The two sides of the frame are respectively provided with a hand pushing type chair wheel, the front end below the frame is provided with two universal wheels corresponding to the hand pushing type chair wheels respectively, a chair seat is arranged in the middle of the frame, a chair cushion is arranged on the chair seat, the front end of the frame is provided with a pedal, a crawler-type stair-climbing device is arranged on the frame, the power driving portion of the crawler-type stair-climbing device is provided with crawlers, crawler tension wheels, crawler driving wheels and a crawler driving motor, one end of the crawler-type stair-climbing device is in control connection with the frame through a crawler winding-unwinding driven arm, a crawler winding-unwinding driving arm and a winding-unwinding motor, and the other end of the crawler-type stair-climbing device is in hinge connection with the frame through a crawler movable bearing arm. A tilting-backward preventing arched bearing arm with a bearing wheel is connected with the middles of the two crawlers. The universal wheels with drive are combined with rudder jaw teeth. The full-automatic stair-climbing wheelchair scooter is applicable to elderly people living alone and physically-challenged people who climb stairs alone and move for a long distance outdoors, and has the advantages of being reasonable in structure, scientific in design, stable in running, convenient to operate, low in center of gravity, safe, reliable and the like.

The invention discloses a wheel-type stair climbing wheelchair fatigue testing machine, which comprises a bracket, a rotating roller, a sliding rail, a fixed frame, one pair of mutually-emitted Hall sensors and a computer, wherein the rotating roller is supported on a left floor beam and a right floor beam; the sliding rail is vertically installed on the stand columns of the bracket; the fixed frame is used for fixing the wheel-type stair climbing wheelchair and is connected with the sliding rail by a sliding block; the mutually-emitted Hall sensors are installed on the left side and the right side of the bracket and are used for counting the vertical movement times and the operation number of turns of the wheel-type stair climbing wheelchair; the computer is used for processing test data; and the outputs of the Hall sensors are connected to the computer. According to the wheel-type stair climbing wheelchair fatigue testing machine disclosed by the invention, the complex degree of freedom of the movement locus when the wheel-type stair climbing wheelchair climbs the stair is simplified into the operation of a single degree of freedom, and the climbing wheel stressing situation of the wheel-type stair climbing wheelchair under the normal use status is simulated by the large-radius rotating roller. When the wheel-type stair climbing wheelchair travels on the wheel-type stair climbing wheelchair fatigue testing machine disclosed by the invention, all stair climbing actions can be simulated, and meanwhile, the tests are finished without moving. Meanwhile, test parameters, such as recorded revolving speed, number of turns, time, videos and curves, are provided by software.