CN108433893A

CN108433893A - A kind of wheelchair of falling-resistant

Info

Publication number: CN108433893A
Application number: CN201810279760.9A
Authority: CN
Inventors: 蒋菊生
Original assignee: Individual
Current assignee: Liu Qingling
Priority date: 2018-04-01
Filing date: 2018-04-01
Publication date: 2018-08-24

Abstract

The invention belongs to wheelchair technical fields, more particularly to a kind of wheelchair of falling-resistant, it includes type leading wheel framework, brake control mechanism, wheelchair sitting frame, driving mechanism for wheel chair, when the wheelchair that people are designed using the present invention, two driving vehicle wheel rotations of driving, two driving vehicle wheel rotations will drive the first axletree and the second axletree to rotate respectively；The rotation of first axletree will make the first centrifugal-block be moved away from the side of the first wheel axle axis；Second axletree rotation simultaneously will make the second centrifugal-block be moved away from the side of installation ring axis；If the velocity of rotation of the wheel of both sides driving at this time is very fast, and when the velocity of rotation of the first axletree and the second axletree reaches consistent, the first centrifugal-block on the first axletree will be moved in corresponding second eccentric groove；So that wheelchair both sides driving wheel is integrally formed；Prevent wheelchair during fast running because of two driving vehicle wheel rotational speeds differences and so that wheelchair is turned on one's side.

Description

A kind of wheelchair of falling-resistant

Technical field

The invention belongs to wheelchair technical field more particularly to a kind of wheelchairs of falling-resistant.

Background technology

Wheelchair is the important tool of rehabilitation, it is not only the walking-replacing tool of limbs the disabled and people with mobility problems, heavier Want be so that them is carried out physical exercise by means of wheelchair and is participated in social activities, so wheelchair itself to the protection of patient particularly It is important.Existing Medical wheelchair is poor to the protection of user, can not be well by wheelchair with using fixing, and people are pushing wheel Chair is walked forward；If the wheelchair speed of travel is slower, both sides driving faster rotating wheel is different and wheelchair is turned on one's side Probability it is also smaller；But if when the wheelchair speed of travel is very fast, both sides drive faster rotating wheel different and make wheelchair hair The probability of raw rollover will become larger；Life and property to user all bring constant.

The present invention design a kind of wheelchair of falling-resistant solve the problems, such as it is as above.

Invention content

To solve drawbacks described above in the prior art, the present invention discloses a kind of wheelchair of falling-resistant, it is to use following skill Art scheme is realized.

A kind of wheelchair of falling-resistant, it is characterised in that：It includes type leading wheel framework, brake control mechanism, wheelchair sitting frame, wheel Chair driving mechanism, wherein wheelchair sitting frame are mounted on the upside of driving mechanism for wheel chair；Two type leading wheel frameworks are symmetrically mounted at wheel Lower end on front side of chair frame；Brake control mechanism is mounted on the upside of one of handrail in two handrails on wheelchair sitting frame.

Above-mentioned driving mechanism for wheel chair includes driving wheel, the first support, shatter-resistant regulating mechanism, wherein on shatter-resistant regulating mechanism Symmetrically there are two the first supports for installation；Wheelchair sitting frame is mounted in two first supports；The both ends of shatter-resistant regulating mechanism are symmetrical There are two drive wheel for ground installation；Driving has hand rim on wheel.

Above-mentioned shatter-resistant regulating mechanism includes the first position-limiting unit, the first axletree, the second position-limiting unit, mounting ring, first Eccentric groove, the first targeting port, the second targeting port, the first regulating tank, the second regulating tank, the first rach slot, first gear mounting groove, Second rach slot, the second axletree, the second eccentric groove, second gear mounting groove, third rach slot, the 4th rach slot, third tune Slot, third targeting port, the 4th targeting port, the 4th regulating tank, clutch are saved, wherein one end of the first axletree is equipped with driving vehicle Wheel；Clutch is installed on the centre position of first axletree；It is circumferential on the periphery of the first axletree other end equably to open There are six the first eccentric grooves.

For each first eccentric groove in six the first eccentric grooves, the first eccentric groove is in the first axletree circumferential direction It is provided with the first targeting port on one side therein in two sides, the second targeting port is provided on another side, the first targeting port is separate The side of first eccentric groove is provided with the first regulating tank, in the first regulating tank close to first wheel axle axis one end and close to first from The first rach slot is provided on the one side of heart slot；Side of second targeting port far from the first eccentric groove is provided with the second regulating tank, the It is provided with the second rach slot close to first wheel axle axis one end in two regulating tanks and on the one side of the first eccentric groove, first Be provided with first gear mounting groove between rach slot and the second rach slot, first gear mounting groove respectively with the first rach slot and second Rach slot communicates.

Six the first position-limiting units are circumferentially uniformly mounted to the inside that the first axletree is provided with first eccentric groove one end, and Six the first position-limiting units coordinate with six the first eccentric grooves respectively.

One end of second axletree is equipped with driving wheel；Installation is installed on the periphery of the second axletree other end Ring；Second eccentric groove there are six circumferentially equably being opened on the inner headed face of mounting ring.

For each second eccentric groove in six the second eccentric grooves, the second eccentric groove is in the second axletree circumferential direction It is provided with third targeting port on wherein one side in two sides, the 4th targeting port is provided on another side, third targeting port is separate The side of second eccentric groove is provided with third regulating tank, in third regulating tank far from second wheel axle axis one end and close to second from The 4th rach slot is provided on the one side of heart slot；4th side of the targeting port far from the second eccentric groove is provided with the 4th regulating tank, the It is provided with third rach slot, third far from second wheel axle axis one end in four regulating tanks and on the one side of the second eccentric groove Be provided with second gear mounting groove between rach slot and the 4th rach slot, second gear mounting groove respectively with third rach slot and the 4th Rach slot communicates.

Six the second position-limiting units are circumferentially uniformly mounted to the inside of mounting ring, and six the second position-limiting units respectively with Six the second eccentric groove cooperations.

The unit of first limit coordinates with corresponding second position-limiting unit.

Above-mentioned first position-limiting unit is solid including the first drive connection bar, the first centrifugal-block, the first return spring, the first spring Fixed disk, the first swinging axle, first gear, the first leaf spring, the second drive connection bar, the first guide rod, the first damping mechanism, One frizzen, the second frizzen, first gear axis, the first rack, the second rack, the first limiting slot, escape groove, first are oriented to Slot, wherein the both ends of the first swinging axle are separately mounted on the first axletree on the front and rear sides face of corresponding first eccentric groove；The One end of one guide rod be mounted on the first swinging axle on, and the first guide rod close to first swinging axle one end two sides with it is corresponding Symmetrically there are two the first leaf springs for installation in the left and right sides of first eccentric groove；Have on the two sides of first centrifugal-block upper end Symmetrical cambered surface；First centrifugal-block is provided with the first guide groove of perforation in the up-down direction, and the first guide groove be located at first from The centre position of heart block；It is provided with escape groove on first centrifugal-block；Escape groove is located at the upper end on the inside of the first centrifugal-block；Escape groove with First guide groove coordinates；The first limiting slot is provided on the outside of first centrifugal-block on left side；First centrifugal-block passes through the first guide groove With being fitted on the first guide rod for the first guide rod, and be located at the first guide rod upper end；First spring fixed disc is pacified On the first guide rod, and positioned at the downside of the first centrifugal-block；It is installed between first centrifugal-block and the first spring fixed disc There is the first return spring；Two the first damping mechanisms are symmetrically mounted at the left and right sides of the first guide rod, and two first resistances Buddhist nun mechanism coordinates with centrifugal-block；Two the first damping mechanisms are between the first return spring and the first guide rod；Second touches Bar is sent out to be mounted on the first axletree by corresponding second targeting port on the first axletree；One end of second frizzen with it is corresponding The first centrifugal-block cooperation；The other end of second frizzen is equipped with the second drive connection bar；Second drive connection bar be located at pair In the second regulating tank answered；One end of second rack is mounted on the lower end of the second drive connection bar, and the second rack is located at second In rach slot；First frizzen is mounted on by corresponding first targeting port on the first axletree on the first axletree；First touches The one end for sending out bar coordinates with the first limiting slot on corresponding first centrifugal-block；The other end of first frizzen is equipped with the first driving Connecting rod；First drive connection bar is located in corresponding first regulating tank；One end of first rack is mounted on first and is drivingly connected The lower end of bar, and the first rack is located in the first rach slot；The both ends of first gear axis are separately mounted to corresponding first gear peace On the front and rear sides face of tankage；First gear is mounted on first gear axis；First gear respectively with the first rack and the second tooth Item engages.

Above-mentioned second position-limiting unit includes the second centrifugal-block, third drive connection bar, second spring fixed disc, the second pendulum Moving axis, second gear, the second guide rod, the second leaf spring, the second return spring, the 4th drive connection bar, third frizzen, the 4th Frizzen, second gear axis, third rack, the 4th rack, the second limiting slot, the second guide groove, wherein the two of the second swinging axle End is separately mounted in mounting ring on the front and rear sides face of corresponding second eccentric groove；One end of second guide rod is mounted on the second pendulum On moving axis, and the second guide rod is right in the left and right sides of corresponding second eccentric groove close to the two sides of second swinging axle one end Claiming ground installation, there are two the second leaf springs；There is symmetrical cambered surface on the two sides of second centrifugal-block upper end；Second centrifugal-block is upper Lower section is provided with the second guide groove of perforation upwards, and the second guide groove is located at the centre position of the second centrifugal-block；Second centrifugal-block The second limiting slot is provided on the left side of outside；Second centrifugal-block is fitted to by the second guide groove and the second guide rod On two guide rods, and it is located at the second guide rod upper end；Second spring fixed disc is mounted on the second guide rod, and is located at second The downside of centrifugal-block；Second return spring is installed between the second centrifugal-block and second spring fixed disc；4th frizzen is logical Corresponding third targeting port in mounting ring is crossed to be mounted in mounting ring；Match with corresponding second centrifugal-block one end of 4th frizzen It closes；The other end of 4th frizzen is equipped with the 4th drive connection bar；4th drive connection bar is located at corresponding 4th regulating tank It is interior；One end of 4th rack is mounted on the lower end of the 4th drive connection bar, and the 4th rack is located in the 4th rach slot；Third is touched Bar is sent out to be mounted in mounting ring by corresponding 4th targeting port in mounting ring；One end of third frizzen with corresponding second from The second limiting slot cooperation on heart block；The other end of third frizzen is equipped with third drive connection bar；Third drive connection bar In corresponding third regulating tank；One end of third rack is mounted on the lower end of third drive connection bar, and third rack position In in third rach slot；The both ends of second gear axis are separately mounted on the front and rear sides face of corresponding second gear mounting groove；The Two gears are mounted on second gear axis；Second gear is engaged with third rack and the 4th rack respectively.

Above-mentioned type leading wheel framework include be oriented to wheel, mounting blocks, rotation axis, set casing, third return spring, fixing axle, Second damping mechanism, the first drag ring, the second drag ring, driving plate, connecting plate, fixed ring, drive rod, annular outer inclined-plane, side Shape avoid guide groove, cylinder groove, the outer inclined-plane of annular, annular driver slot, driving cylinder, centrifugal wheel, third centrifugal-block, centrifuge spring, Third eccentric groove, wherein one end of set casing are open end；The other end of set casing is mounted on the downside of wheelchair sitting frame；Second rubs It wipes and is provided with arc outer inclined-plane on the inner headed face of ring lower end；Second drag ring is mounted on set casing lower end by the inner headed face of the upper end Periphery on；It is provided with cylinder groove on the end face of rotation axis side；Rotation axis is provided on the periphery of cylinder groove one end circumferential equal Rectangular escape groove there are three opening evenly；Three rectangular escape groove are communicated with cylinder groove；One end with cylinder groove in rotation axis The inside of set casing is mounted on by bearing；There is the outer inclined-plane of annular on the periphery of first drag ring one end；First drag ring Inner headed face on be provided with annular driver slot；First drag ring is mounted on the periphery of rotation axis, and positioned at the second drag ring Downside；Drive drive rod there are three circumferentially equably being installed on the periphery of cylinder；Driving cylinder installation is opened on the rotating shaft On the lower face of cylinder groove, and three drive rods pass through three rectangular escape groove in rotation axis and the annular on the first drag ring Driver slot coordinates；Clamping rings nesting is mounted on the periphery of rotation axis, and clamping rings is located at the downside of the first drag ring； Third return spring is installed between the first drag ring and clamping rings；Two the second damping mechanisms are circumferentially uniformly mounted to solid Determine the upside of annulus, and two the second damping mechanisms are between third return spring and rotation axis；The upside of mounting blocks one end Square groove is provided on face；Mounting blocks are mounted on the downside of rotation axis；One end of fixing axle is mounted on the one side of square groove；Gu The other end of dead axle is located at the outside of mounting blocks across square groove；Wheel is oriented to be mounted in fixing axle；The periphery of centrifugal wheel Upper circumferential direction is equably provided with multiple third eccentric grooves；Centrifugal wheel is mounted in the fixing axle on the outside of mounting blocks；Each third Third centrifugal-block there are one being respectively mounted in eccentric groove；Each it is separately installed between third centrifugal-block and corresponding third eccentric groove One centrifugation spring；One end of connecting plate is mounted on the first drag ring；One end of driving plate is mounted on the lower end of connecting plate；It drives Movable plate coordinates with the third centrifugal-block on centrifugal wheel；In the annular on the outer inclined-plane of annular and the second drag ring on first drag ring Inclined-plane coordinates.

It is connect with brake control mechanism on the upside of above-mentioned driving cylinder.

As being further improved for this technology, above-mentioned air bag is elastic balloon.

As being further improved for this technology, above-mentioned first damping mechanism include damping tank, second support, damping push rod, First pneumatic tube, air bag, the second pneumatic tube, damping push-plate, the first unidirectional outlet, the second unidirectional import, the first unidirectional import, the Two unidirectional outlets, wherein being provided with the unidirectional import of first communicated with inside and the second unidirectional outlet on the upper surface of damping tank；Resistance The unidirectional import of second communicated with inside and the first unidirectional outlet are provided on the lower face of Buddhist nun's tank；Tank is damped by the second support to pacify Mounted in the side of corresponding first guide rod；Damp the inside that push-plate is mounted on damping tank；The one end for damping push rod is mounted on damping On push-plate；The other end of damping push rod passes through the upper side of damping tank to be connect with the first centrifugal-block；First unidirectional outlet and first It is connected by the first pneumatic tube between unidirectional import；Air bag is installed on first pneumatic tube；Second unidirectional outlet and second is unidirectionally It is connected by the second pneumatic tube between import；Air bag is installed on second pneumatic tube.

As being further improved for this technology, above-mentioned second damping mechanism is similar to the first damping mechanism；Second damping machine The upper end of damping push rod in structure is mounted on the downside of the first drag ring；The first unidirectional outlet in first damping mechanism is second The first unidirectional import in damping mechanism；The first unidirectional import in first damping mechanism is the first list in the second damping mechanism To outlet；The second unidirectional outlet in first damping mechanism is the second unidirectional import in the second damping mechanism；First damping machine The second unidirectional import in structure is the second unidirectional outlet in the second damping mechanism.

As being further improved for this technology, the diameter of above-mentioned first unidirectional outlet is the three of the second unidirectional outlet diameter Times；First unidirectional outlet diameter and the diameter of the first unidirectional import are identical；Second unidirectional outlet diameter and the second unidirectional import Diameter is identical.

As being further improved for this technology, the above-mentioned frizzen of third in the initial state is located on corresponding second centrifugal-block The second limiting slot in；First frizzen is located in the first limiting slot on corresponding first centrifugal-block.

As being further improved for this technology, above-mentioned first centrifugal-block and the second centrifugal-block under one meter of speed per second just It can be detached from corresponding first frizzen and third frizzen.

The both ends of the first swinging axle are separately mounted to front and back two of corresponding first eccentric groove on the first axletree in the present invention On side；One end of first guide rod is mounted on the first swinging axle, and the first guide rod is close to the two of first swinging axle one end Side in the left and right sides of corresponding first eccentric groove symmetrically installation there are two the first leaf spring；The two of first centrifugal-block upper end There is symmetrical cambered surface on side；First centrifugal-block is fitted to the first guiding by the first guide groove and the first guide rod On bar；First spring fixed disc is mounted on the first guide rod；It is installed between first centrifugal-block and the first spring fixed disc There is the first return spring；Two the first damping mechanisms are symmetrically mounted at the left and right sides of the first guide rod, and two first resistances Buddhist nun mechanism coordinates with centrifugal-block；Second frizzen is mounted on the first wheel by corresponding second targeting port on the first axletree On axis；One end of second frizzen coordinates with corresponding first centrifugal-block；The other end of second frizzen is equipped with the second driving Connecting rod；One end of second rack is mounted on the lower end of the second drive connection bar；It is right on the first axletree that first frizzen passes through The first targeting port answered is mounted on the first axletree；One end of first frizzen and the first limit on corresponding first centrifugal-block Slot coordinates；The other end of first frizzen is equipped with the first drive connection bar；First drive connection bar is located at corresponding first and adjusts It saves in slot；One end of first rack is mounted on the lower end of the first drive connection bar；The both ends of first gear axis are separately mounted to pair It answers on the front and rear sides face of first gear mounting groove；First gear is mounted on first gear axis；First gear is respectively with first Rack and the engagement of the second rack；When the first axletree rotates so that the first centrifugal-block in the first axletree is relative to right When the first eccentric groove answered is swung towards corresponding second frizzen, the first centrifugal-block will push the second frizzen to make second Frizzen is moved away from the side of the first centrifugal-block；Second frizzen movement will drive the second drive connection bar towards remote Side movement from the first centrifugal-block；Second drive connection bar will drive second away from the side movement of the first centrifugal-block Rack is moved away from the side of the first centrifugal-block；Second rack will make away from the side movement of the first centrifugal-block First gear rotates；First gear rotation will make the first rack be moved away from the side of the first centrifugal-block；First tooth Item drives the first drive connection bar to be moved away from the side of the first centrifugal-block away from the side movement of the first centrifugal-block； First drive connection bar drives the first frizzen away from the first centrifugal-block away from the side movement of the first centrifugal-block It moves side；Since in the initial state, the first frizzen is located in the first limiting slot on corresponding first centrifugal-block；So this When the first frizzen movement the first frizzen will be made to progressively disengage the first limiting slot on corresponding first centrifugal-block；Until most After completely disengage；Frizzen loses the constraint to the first centrifugal-block at this time；First axletree rotation at this time will be made in centrifugation With lower so that the first centrifugal-block is moved away from the side of the first wheel axle axis；First centrifugal-block movement will stretch first Return spring；The effect of first return spring be when the first axletree stops operating, under the action of the first return spring, One centrifugal-block can restore on original position；Effect mounted on the first leaf spring of the first guide rod both sides is when the first vehicle When wheel shaft stops operating, the first guide rod can restore on original position under the action of two the first leaf springs；It is mounted on The effect of first damping mechanism of the first guide rod both sides is that reducing the first centrifugal-block by two the first damping mechanisms is centrifuging Movement speed under effect；First effect from cambered surface on limit block is to prevent the first centrifugal-block from being contacted with corresponding second eccentric groove When, when not stuck with corresponding second eccentric groove on the first centrifugal-block, the first centrifugal-block can be smoothly through the second eccentric groove； The effect of escape groove on first centrifugal-block is to prevent the first centrifugal-block when being moved in corresponding second eccentric groove, and second leads It is interfered to bar and the first centrifugal-block.

The both ends of the second swinging axle are separately mounted to the front and rear sides face of corresponding second eccentric groove in mounting ring in the present invention On；One end of second guide rod is mounted on the second swinging axle, and the second guide rod is close to the two sides of second swinging axle one end With in the left and right sides of corresponding second eccentric groove symmetrically installation there are two the second leaf spring；The two sides of second centrifugal-block upper end It is upper that there is symmetrical cambered surface；Second centrifugal-block is fitted to the second guide rod by the second guide groove and the second guide rod On；Second spring fixed disc is mounted on the second guide rod；It is equipped between second centrifugal-block and second spring fixed disc Second return spring；4th frizzen is mounted on by corresponding third targeting port in mounting ring in mounting ring；4th frizzen One end coordinate with corresponding second centrifugal-block；The other end of 4th frizzen is equipped with the 4th drive connection bar；4th driving Connecting rod is located in corresponding 4th regulating tank；One end of 4th rack is mounted on the lower end of the 4th drive connection bar, and the 4th Rack is located in the 4th rach slot；Third frizzen is mounted on by corresponding 4th targeting port in mounting ring in mounting ring；The One end of three frizzens coordinates with the second limiting slot on corresponding second centrifugal-block；The other end of third frizzen is equipped with Three drive connection bars；Third drive connection bar is located in corresponding third regulating tank；It is driven mounted on third one end of third rack The lower end of dynamic connecting rod, and third rack is located in third rach slot；The both ends of second gear axis are separately mounted to corresponding second On the front and rear sides face of gear mounting groove；Second gear is mounted on second gear axis；Second gear respectively with third rack and 4th rack engages；When mounting ring rotates so that the second centrifugal-block in mounting ring is relative to corresponding second eccentric groove When being swung towards corresponding 4th frizzen, the second centrifugal-block will push the 4th frizzen make the 4th frizzen away from It moves the side of second centrifugal-block；4th frizzen movement will drive the 4th drive connection bar away from the second centrifugal-block It moves side；4th drive connection bar will drive the 4th rack away from away from the side movement of the second centrifugal-block It moves the side of two centrifugal-blocks；4th rack will make second gear rotate away from the side movement of the second centrifugal-block； Second gear rotation will make third rack be moved away from the side of the second centrifugal-block；Third rack is away from second The side movement of centrifugal-block drives third drive connection bar to be moved away from the side of the second centrifugal-block；Third drive connection bar Side movement away from the second centrifugal-block drives third frizzen to be moved away from the side of the second centrifugal-block；Due to Under original state, third frizzen is located in the second limiting slot on corresponding second centrifugal-block；So third frizzen moves at this time It is dynamic that third frizzen will be made to progressively disengage the second limiting slot on corresponding second centrifugal-block；To the last completely disengage；The Three frizzens lose the constraint to the second centrifugal-block；Mounting ring rotation at this time will be under the action of the centrifugal so that the second centrifugal-block Away from the side movement of installation ring axis；Second centrifugal-block movement will compress the second return spring；Second return spring Effect be when mounting ring stops operating, under the action of the second return spring, the second centrifugal-block can restore original On position；Effect mounted on the second leaf spring of the second guide rod both sides is when mounting ring stops operating, in two the second plates The second guide rod can restore on original position under the action of spring；Second from limit block on cambered surface effect be prevent first from Heart block is contacted with corresponding second eccentric groove, and when the second centrifugal-block does not move, and the second centrifugal-block is stuck by the first centrifugal-block.

For type leading wheel framework in the present invention, one end of set casing is mounted on the downside of wheelchair sitting frame；Under second drag ring Arc outer inclined-plane is provided on the inner headed face at end；Second drag ring is mounted on the outer circle of set casing lower end by the inner headed face of the upper end On face；One end with cylinder groove is mounted on the inside of set casing by bearing in rotation axis；The outer circle of first drag ring one end There is the outer inclined-plane of annular on face；Annular driver slot is provided on the inner headed face of first drag ring；First drag ring is mounted on rotation axis Periphery on；Drive drive rod there are three circumferentially equably being installed on the periphery of cylinder；Cylinder is driven to be mounted on rotation axis On the lower face of upper opened cylinder groove, and three drive rods pass through on three rectangular escape groove and the first drag ring in rotation axis Annular driver slot cooperation；Clamping rings nesting is mounted on the periphery of rotation axis；Between first drag ring and clamping rings Third return spring is installed；Two the second damping mechanisms are circumferentially uniformly mounted to the upside of clamping rings, and two second Damping mechanism is between third return spring and rotation axis；Mounting blocks are mounted on the downside of rotation axis；Pacify one end of fixing axle On the one side of square groove；The other end of fixing axle is located at the outside of mounting blocks across square groove；Wheel is oriented to be mounted on In fixing axle；It is circumferential on the periphery of centrifugal wheel to be equably provided with multiple third eccentric grooves；Centrifugal wheel is mounted on mounting blocks In the fixing axle in outside；Third centrifugal-block there are one being respectively mounted in each third eccentric groove；Each third centrifugal-block with it is corresponding A centrifugation spring is separately installed between third eccentric groove；One end of connecting plate is mounted on the first drag ring；Driving plate One end is mounted on the lower end of connecting plate；Driving plate coordinates with the third centrifugal-block on centrifugal wheel；Annular on first drag ring is outer Annular outer inclined-plane cooperation on inclined-plane and the second drag ring；When being oriented to vehicle wheel rotation, fixed shaft rotation will be driven by being oriented to wheel It is dynamic；Fixing axle rotation drives centrifugal wheel rotation；Centrifugal wheel rotation will make be mounted on centrifugal wheel on third centrifugal-block from It moves side under heart effect away from centrifugation wheel axis；The movement of third centrifugal-block will push driving plate make driving plate to Upper movement；Driving plate, which moves up, to drive connecting plate to move up；Connecting plate, which moves up, will drive the first drag ring It moves up；First drag ring, which moves up, to drive driving cylinder to move up by three drive rods；When guiding wheel Velocity of rotation when reaching certain value, the first drag ring will be contacted with the second drag ring, and the first drag ring is by thereon Annular outer inclined-plane friction on the outer inclined-plane of annular and the second drag ring；Since the second drag ring is mounted on set casing；Set casing It remains static, so the second drag ring remains static；The second drag ring passes through the friction with the first drag ring at this time So that the first drag ring remains static；First drag ring is installed on the rotating shaft；So rotation axis remains static；I.e. Being oriented to wheel will not swing back and forth；It prevents from being oriented to shimmy and making wheelchair rollover.

The effect of the second centrifugal-block is in the present invention, when the second centrifugal-block is without departing from the constraint of third frizzen, but When one centrifugal-block has been detached from the constraint of the first frizzen, it is corresponding can to stop that the first centrifugal-block enters by the second centrifugal-block In second eccentric groove；And then prevent the first centrifugal-block from entering in corresponding second eccentric groove；So that the first axletree and Two axletrees interfere；So that wheelchair rollover；And when the velocity of rotation of the first axletree is more than the rotation of the second axletree Speed, and when the second centrifugal-block and the first centrifugal-block are detached from the constraint of corresponding third frizzen and the first frizzen respectively, second When the displacement distance of centrifugal-block is entered insufficient for the first centrifugal-block in the second eccentric groove, it can be stopped by the second centrifugal-block First centrifugal-block enters in corresponding second eccentric groove；And then prevent the first centrifugal-block different from the velocity of rotation of mounting ring In the case of, the first centrifugal-block enters in corresponding second eccentric groove；So that the first axletree and the second axletree occur to do It relates to；So that wheelchair rollover.

The one of corresponding first guide rod is mounted on by the second support for the first damping mechanism, damping tank in the present invention Side；Damp the inside that push-plate is mounted on damping tank；The one end for damping push rod is mounted on damping push-plate；Damp the other end of push rod Upper side across damping tank is connect with the first centrifugal-block；Pass through the first air pressure between first unidirectional outlet and the first unidirectional import Pipe connects；Air bag is installed on first pneumatic tube；Connected by the second pneumatic tube between second unidirectional outlet and the second unidirectional import It connects；Air bag is installed on second pneumatic tube.When the first centrifugal-block moves up, the first centrifugal-block will drive corresponding damping Push rod moves up；Damping push rod moves up band dynamic damping push-plate and moves up；Damping push-plate, which moves up, will push resistance Gas in Buddhist nun's tank positioned at upside is flowed out by the first unidirectional outlet, and the gas flowed out is single by first by the second pneumatic tube Damping tank is flowed into import；Since the diameter of the first unidirectional outlet is three times of the second unidirectional outlet diameter；First unidirectional outlet Diameter and the diameter of the first unidirectional import are identical；Second unidirectional outlet diameter and the diameter of the second unidirectional import are identical；So the One damping mechanism plays damping action during the first centrifugal-block is mobile upwards；And the second damping mechanism then just phase Instead；Second damping mechanism plays damping action in the first frictional disk moves down.Is reduced when the effect of the first damping mechanism The movement speed of one centrifugal-block, effect when the first centrifugal-block it is different from the velocity of rotation of mounting ring in rotation process, and When arcwall face on first centrifugal-block is not completely into corresponding second eccentric groove, the first centrifugal-block can have time enough shifting Move out of corresponding second eccentric groove；Prevent the first centrifugal-block in the case of the velocity of rotation difference with mounting ring, the first centrifugation Block enters in corresponding second eccentric groove；So that the first axletree and the second axletree interfere；So that wheelchair rollover.

Relative to traditional wheelchair technology, the wheelchair that the present invention designs, people walk forward in promotion wheelchair；If wheelchair When the speed of travel is slower, both sides driving faster rotating wheel is different and makes the probability that wheelchair is turned on one's side also smaller；But such as When the fruit wheelchair speed of travel is very fast, both sides driving faster rotating wheel is different and the probability that wheelchair is turned on one's side will be become Greatly；And the wheelchair that the present invention designs drives wheel both sides during quick rotation to drive turning for wheel by adjusting wheelchair both sides Speed is consistent；This reduces the probabilities of wheel rollover.

Description of the drawings

Fig. 1 is global facility structural schematic diagram.

Fig. 2 is global facility distribution schematic diagram.

Fig. 3 is driving mechanism for wheel chair structural schematic diagram.

Fig. 4 is shatter-resistant regulating mechanism structural schematic diagram.

Fig. 5 is the first position-limiting unit and the second position-limiting unit cooperation schematic diagram.

Fig. 6 is the first position-limiting unit scheme of installation.

Fig. 7 is the first position-limiting unit distribution schematic diagram.

Fig. 8 is the first centrifugal-block scheme of installation.

Fig. 9 is the first eccentric groove distribution schematic diagram.

Figure 10 is first gear mounting groove distribution schematic diagram.

Figure 11 is the first position-limiting unit structural schematic diagram.

Figure 12 is the first return spring scheme of installation.

Figure 13 is the first rack, the second rack and first gear cooperation schematic diagram.

Figure 14 is the first damping mechanism scheme of installation.

Figure 15 is the first damping mechanism surface structure schematic diagram.

Figure 16 is the first damping mechanism structural schematic diagram.

Figure 17 is the first centrifugal block structure schematic diagram.

Figure 18 is the first position-limiting unit and the second position-limiting unit cooperation floor map.

Figure 19 is the second position-limiting unit scheme of installation.

Figure 20 is the second centrifugal-block scheme of installation.

Figure 21 is mounting ring scheme of installation.

Figure 22 is the second eccentric groove distribution schematic diagram.

Figure 23 is second gear mounting groove distribution schematic diagram.

Figure 24 is the second position-limiting unit structural schematic diagram.

Figure 25 is the second return spring scheme of installation.

Figure 26 is the second centrifugal block structure schematic diagram.

Figure 27 is type leading wheel framework structural schematic diagram.

Figure 28 is centrifugal wheel scheme of installation.

Figure 29 is to be oriented to wheel scheme of installation.

Figure 30 is driving plate scheme of installation.

Figure 31 is third centrifugal-block scheme of installation.

Figure 32 is the first drag ring and the second drag ring cooperation schematic diagram.

Figure 33 is drive rod scheme of installation.

Figure 34 is the second drag ring scheme of installation.

Figure 35 is rotation shaft structure schematic diagram.

Figure 36 is the first drag ring structural schematic diagram.

Figure 37 is drive rod distribution schematic diagram.

Figure 38 is the first drag ring scheme of installation.

Figure label title：1, type leading wheel framework 2, brake control mechanism 3, wheelchair sitting frame 4, driving mechanism for wheel chair 5, driving The support of wheel 6, first 7, shatter-resistant regulating mechanism 8, the first position-limiting unit 9, the first axletree 10, the second position-limiting unit 11, installation Ring 12, the first eccentric groove 13, the first targeting port 14, the second targeting port 15, the first regulating tank 16, the second regulating tank 17, the first tooth Bar groove 18, first gear mounting groove 19, the second rach slot 20, the first drive connection bar 21, the first centrifugal-block 22, the first return bullet Spring 23, the first spring fixed disc 24, the first swinging axle 25, first gear 26, the first leaf spring 27, the second drive connection bar 28, First guide rod 29, the first damping mechanism 30, the first frizzen 31, the second frizzen 32, first gear axis 33, the first rack 34, the second rack 35, second support 36, damping push rod 37, the first pneumatic tube 38, air bag 39, the second pneumatic tube 40, damping push-plate 41, the first limiting slot 42, escape groove 43, the first guide groove 44, the second axletree 45, the second eccentric groove 46, damping tank 47, second Gear mounting groove 48, third rach slot 49, the 4th rach slot 50, third regulating tank 51, third targeting port 52, the 4th targeting port 53, the 4th regulating tank 54, the second centrifugal-block 55, third drive connection bar 56, second spring fixed disc 57, the second swinging axle 58, second gear 59, the second guide rod 60, the second leaf spring 61, the second return spring 62, the 4th drive connection bar 63, third are touched Bar 64, the 4th frizzen 65, second gear axis 66, third rack 67, the 4th rack 68, the second limiting slot 69, second is sent out to be oriented to Slot 70, the second unidirectional outlet 72, the first unidirectional outlet 73, the second unidirectional import 74, clutch 75, is led first unidirectional import 71 To wheel 76, mounting blocks 77, rotation axis 78, set casing 79, third return spring 80, fixing axle 81, the second damping mechanism 82, One drag ring 83, the second drag ring 84, clamping rings 85, driving plate 86, connecting plate 87, drive rod 88, annular outer inclined-plane 89, side Shape avoids guide groove 90, cylinder groove 91, the outer inclined-plane 92 of annular, annular driver slot 94, driving cylinder 95, centrifugal wheel 96, centrifugation spring 97, third centrifugal-block 98, third eccentric groove.

Specific implementation mode

As shown in Figure 1, 2, it includes type leading wheel framework 1, brake control mechanism 2, wheelchair sitting frame 3, driving mechanism for wheel chair 4, Wherein as shown in Figure 1, the type leading wheel framework 1 of upside two that wheelchair sitting frame 3 is mounted on driving mechanism for wheel chair 4 is symmetrically mounted at wheel The lower end brake control mechanism 2 of 3 front side of chair frame is mounted on the upside of one of handrail in two handrails on wheelchair sitting frame 3.

As shown in figure 3, above-mentioned driving mechanism for wheel chair 4 includes driving wheel 5, first support 6, shatter-resistant regulating mechanism 7, wherein Symmetrically there are two the first 6 wheelchair sitting frames 3 of support to be mounted on shatter-resistant tune in two first supports 6 for installation on shatter-resistant regulating mechanism 7 The both ends of section mechanism 7 drive wheel 5 to drive on wheel 5 with hand rim there are two symmetrically installing.

As shown in figure 4, above-mentioned shatter-resistant regulating mechanism 7 includes the first position-limiting unit 8, the first axletree 9, the second position-limiting unit 10, mounting ring 11, the first eccentric groove 12, the first targeting port 13, the second targeting port 14, the first regulating tank 15, the second regulating tank 16, First rach slot 17, first gear mounting groove 18, the second rach slot 19, the second axletree 44, the second eccentric groove 45, second gear Mounting groove 47, third rach slot 48, the 4th rach slot 49, third regulating tank 50, third targeting port 51, the 4th targeting port 52, Four regulating tanks 53, clutch 74, wherein as shown in figure 9, one end of the first axletree 9 is equipped with driving 5 first axletree 9 of wheel Centre position on be equipped on the periphery of 74 first axletree of clutch, 9 other end it is circumferential equably open there are six first from Heart slot 12.

As shown in Figure 10, for each first eccentric groove 12 in six the first eccentric grooves 12, the first eccentric groove 12 is first The first targeting port 13 is provided in two sides in 9 circumferential direction of axletree on one side therein, second is provided on another side Targeting port 14, side of first targeting port 13 far from the first eccentric groove 12 are provided with the first regulating tank 15, are leaned in the first regulating tank 15 It is provided with 17 second targeting port 14 of the first rach slot on the one side of 9 axis one end of nearly first axletree and close first eccentric groove 12 Side far from the first eccentric groove 12 is provided with the second regulating tank 16, close to 9 axis one end of the first axletree in the second regulating tank 16 And it is provided with the second rach slot 19 on the one side of the first eccentric groove 12, it is opened between the first rach slot 17 and the second rach slot 19 There are first gear mounting groove 18, first gear mounting groove 18 to be communicated respectively with the first rach slot 17 and the second rach slot 19.

As shown in Figure 6,7, circumferentially be uniformly mounted to the first axletree 9 is provided with the first centrifugation to six the first position-limiting units 8 The inside of 12 one end of slot, as shown in figure 8, and six the first position-limiting units 8 coordinate respectively with six the first eccentric grooves 12.

As shown in figure 21, one end of the second axletree 44 is equipped with the outer circle of 5 second axletree of driving wheel, 44 other end Mounting ring 11 is installed as shown in figure 22 on face, it is circumferential on the inner headed face of mounting ring 11 equably to open that there are six the second eccentric grooves 45。

As shown in figure 23, for each second eccentric groove 45 in six the second eccentric grooves 45, the second eccentric groove 45 is second It is provided with third targeting port 51 on the wherein one side in two sides in 44 circumferential direction of axletree, the 4th is provided on another side Targeting port 52, side of the third targeting port 51 far from the second eccentric groove 45 are provided with third regulating tank 50, remote in third regulating tank 50 It is provided with the 4th targeting port of the 4th rach slot 49 from 44 axis one end of the second axletree and on the one side of the second eccentric groove 45 52 sides far from the second eccentric groove 45 are provided with the 4th regulating tank 53, far from 44 axis one of the second axletree in the 4th regulating tank 53 It is provided with third rach slot 48 on the one side of end and close second eccentric groove 45, between third rach slot 48 and the 4th rach slot 49 It is provided with second gear mounting groove 47, second gear mounting groove 47 is communicated with third rach slot 48 and the 4th rach slot 49 respectively.

As shown in figure 19, the circumferential inside for being uniformly mounted to mounting ring 11 of six the second position-limiting units 10, such as Figure 20 institutes Show, and six the second position-limiting units 10 coordinate with six the second eccentric grooves 45 respectively.

As shown in Fig. 5,18, the unit of the first limit coordinates with corresponding second position-limiting unit 10.

As shown in figure 11, above-mentioned first position-limiting unit 8 includes the first drive connection bar 20, the first centrifugal-block 21, first times Position spring 22, the first spring fixed disc 23, the first swinging axle 24, first gear 25, the first leaf spring 26, the second drive connection bar 27, the first guide rod 28, the first damping mechanism 29, the first frizzen 30, the second frizzen 31, first gear axis 32, the first tooth Item 33, the second rack 34, the first limiting slot 41, escape groove 42, the first guide groove 43, wherein as shown in figure 12, the first swinging axle 24 both ends are separately mounted on the first axletree 9 one of first guide rod 28 on the front and rear sides face of corresponding first eccentric groove 12 End is mounted on the first swinging axle 24, and as shown in figure 13, and the first guide rod 28 is close to the two sides of 24 one end of the first swinging axle With in the left and right sides of corresponding first eccentric groove 12 symmetrically installation there are two 21 upper end of the first 26 first centrifugal-block of leaf spring Have symmetrical cambered surface as shown in figure 17 on two sides, the first centrifugal-block 21 is provided with the first guide groove of perforation in the up-down direction 43, and the first guide groove 43 is located on the first centrifugal-block of centre position 21 of the first centrifugal-block 21 and is provided with 42 escape groove 42 of escape groove Coordinate on 21 outside left side of the first centrifugal-block positioned at the upper end escape groove 42 of 21 inside of the first centrifugal-block and the first guide groove 43 It is provided with the first limiting slot 41 as shown in figure 13, the first centrifugal-block 21 is pacified by the cooperation of the first guide groove 43 and the first guide rod 28 It is mounted on the first guide rod 28 on the first guide rod 28, and positioned at 28 upper end the first spring fixed disc 23 of the first guide rod On, and first return is installed between downside the first centrifugal-block 21 and the first spring fixed disc 23 of the first centrifugal-block 21 Spring 22 is as shown in figure 14, and two the first damping mechanisms 29 are symmetrically mounted at the left and right sides of the first guide rod 28, and two First damping mechanism 29 coordinates two the first damping mechanisms 29 to be located at the first return spring 22 and the first guide rod with centrifugal-block As shown in figure 8, the second frizzen 31 is mounted on the first wheel by corresponding second targeting port 14 on the first axletree 9 between 28 One end of second frizzen 31 coordinates the other end of the second frizzen 31 to be equipped with second with corresponding first centrifugal-block 21 on axis 9 One end that 27 second drive connection bar 27 of drive connection bar is located at the second rack 34 in corresponding second regulating tank 16 is mounted on the The lower end of two drive connection bars 27, and the second rack 34 is located at the first frizzen 30 in the second rach slot 19 and passes through the first axletree Corresponding first targeting port 13 is mounted on one end of the first frizzen 30 and corresponding first centrifugal-block 21 on the first axletree 9 on 9 On the first limiting slot 41 coordinate the first frizzen 30 the other end 20 first drive connection bar of the first drive connection bar is installed 20 one end for being located at the first rack 33 in corresponding first regulating tank 15 are mounted on the lower end of the first drive connection bar 20, and first The both ends that rack 33 is located at first gear axis 32 in the first rach slot 17 are separately mounted to before corresponding to first gear mounting groove 18 Afterwards on two sides first gear 25 be mounted on first gear axis 32 on first gear 25 respectively with the first rack 33 and the second rack 34 engagements.

As shown in figure 24, above-mentioned second position-limiting unit 10 includes the second centrifugal-block 54, third drive connection bar 55, the second bullet Spring fixed disc 56, the second swinging axle 57, second gear 58, the second guide rod 59, the second leaf spring 60, the second return spring 61, 4th drive connection bar 62, third frizzen 63, the 4th frizzen 64, second gear axis 65, third rack 66, the 4th rack 67, the second limiting slot 68, the second guide groove 69, wherein as shown in figure 25, the both ends of the second swinging axle 57 are separately mounted to install One end of second guide rod 59 is mounted on the second swinging axle 57 on the front and rear sides face of corresponding second eccentric groove 45 on ring 11, and Second guide rod 59 is symmetrical in the left and right sides of corresponding second eccentric groove 45 close to the two sides of 57 one end of the second swinging axle There are two the second leaf springs 60 for ground installation as shown in figure 26, has symmetrical cambered surface second on the two sides of 54 upper end of the second centrifugal-block Centrifugal-block 54 is provided with the second guide groove 69 of perforation in the up-down direction, and the second guide groove 69 is located in the second centrifugal-block 54 Between the second limiting slot 68 is provided on 54 outside left side of the second centrifugal-block of position as shown in figure 24, the second centrifugal-block 54 passes through second Guide groove 69 and the second guide rod 59 are fitted on the second guide rod 59, and are located at 59 the second bullet of upper end of the second guide rod Spring fixed disc 56 is mounted on the second guide rod 59, and positioned at downside the second centrifugal-block 54 and the second bullet of the second centrifugal-block 54 Second return spring 61 is installed as shown in figure 20 between spring fixed disc 56, the 4th frizzen 64 passes through corresponding in mounting ring 11 Third targeting port 51 be mounted on one end and corresponding second centrifugal-block 54 of the 4th frizzen 64 in mounting ring 11 and coordinate the 4th The other end of frizzen 64 is equipped with the 4th drive connection bar 62 of the 4th drive connection bar 62 and is located at corresponding 4th regulating tank 53 One end of interior 4th rack 67 is mounted on the lower end of the 4th drive connection bar 62, and the 4th rack 67 is located in the 4th rach slot 49 Third frizzen 63 is mounted on one of third frizzen 63 in mounting ring 11 by corresponding 4th targeting port 52 in mounting ring 11 Hold the other end with the second limiting slot 68 cooperation third frizzen 63 on corresponding second centrifugal-block 54 that third driving is installed It is driven mounted on third one end that 55 third drive connection bar 55 of connecting rod is located at third rack 66 in corresponding third regulating tank 50 The lower end of dynamic connecting rod 55, and third rack 66 is located at the both ends of second gear axis 65 in third rach slot 48 and is separately mounted to pair Second gear 58 on the front and rear sides face of second gear mounting groove 47 is answered to be mounted on the difference of second gear 58 on second gear axis 65 It is engaged with third rack 66 and the 4th rack 67.

As shown in Figure 27,28, above-mentioned type leading wheel framework 1 includes being oriented to wheel 75, mounting blocks 76, rotation axis 77, set casing 78, third return spring 79, fixing axle 80, the second damping mechanism 81, the first drag ring 82, the second drag ring 83, driving plate 85, Connecting plate 86, fixed ring, drive rod 87, annular outer inclined-plane 88, rectangular evacuation guide groove 89, cylinder groove 90, the outer inclined-plane 91 of annular, ring Shape driver slot 92, driving cylinder 94, centrifugal wheel 95, third centrifugal-block 97, centrifugation spring 96, third eccentric groove 98, wherein as schemed Shown in 34, one end of set casing 78 is that the other end of open end set casing 78 is mounted on the second drag ring of downside of wheelchair sitting frame 3 The second drag ring of arc outer inclined-plane 83 is provided on the inner headed face of 83 lower ends to be mounted under set casing 78 by the inner headed face of the upper end On the periphery at end as shown in figure 35, it is provided with 90 rotation axis 77 of cylinder groove on the end face of 77 side of rotation axis and is provided with cylinder groove 90 1 On the periphery at end it is circumferential equably open there are three 42 3 rectangular escape groove 42 of rectangular escape groove communicated with cylinder groove 90 as Shown in Figure 29, one end with cylinder groove 90 is as shown in figure 36 mounted on the inside of set casing 78 by bearing in rotation axis 77, It is provided with annular driving on the inner headed face on the periphery of 82 one end of the first drag ring with outer 91 first drag ring 82 of inclined-plane of annular 92 first drag ring 82 of slot is mounted on the periphery of rotation axis 77, and as shown in figure 37 positioned at the downside of the second drag ring 83, Drive rod 87 there are three circumferentially equably being installed on the periphery of cylinder 94 is driven to drive cylinder 94 to install as shown in Figure 33,38 In rotation axis 77 on the lower face of opened cylinder groove 90, and three drive rods 87 pass through three rectangular evacuation in rotation axis 77 Slot 42 coordinates clamping rings 84 nested on the periphery of rotation axis 77 with the annular driver slot 92 on the first drag ring 82, And clamping rings 84 be located at the first drag ring 82 downside it is as shown in figure 28, installed between the first drag ring 82 and clamping rings 84 There is third return spring 79 as shown in figure 30, two the second damping mechanisms 81 are circumferential to be uniformly mounted to the upper of clamping rings 84 Side, and two the second damping mechanisms 81 are as shown in figure 27 between third return spring 79 and rotation axis 77, mounting blocks 76 1 It is provided with square groove mounting blocks 76 on the upper side at end and is mounted on square groove mounted on one end of the downside fixing axle 80 of rotation axis 77 One side on the other end outside that passes through square groove to be located at mounting blocks 76 of fixing axle 80 be oriented to wheel 75 mounted on fixing axle On 80 as shown in figure 31, circumferentially 98 centrifugal wheel 95 of multiple third eccentric grooves is equably provided on the periphery of centrifugal wheel 95 to be mounted on It is respectively mounted that there are one third centrifugal-blocks 97 each the in each third eccentric groove 98 in the fixing axle 80 in the outside of mounting blocks 76 One end installation of centrifugation 96 connecting plate 86 of spring is separately installed between three centrifugal-blocks 97 and corresponding third eccentric groove 98 The lower end driving plate 85 and the third on centrifugal wheel 95 that one end of driving plate 85 is mounted on connecting plate 86 on the first drag ring 82 Centrifugal-block 97 coordinates as shown in figure 32, in the annular on outer 91 and second drag ring 83 of inclined-plane of annular on the first drag ring 82 tiltedly Face 88 coordinates.

94 upside of above-mentioned driving cylinder is connect with brake control mechanism 2.

Above-mentioned air bag 38 is elastic balloon 38.

As shown in figure 15, above-mentioned first damping mechanism 29 includes damping tank 46, second support 35, damping push rod 36, first Pneumatic tube 37, air bag 38, the second pneumatic tube 39, damping push-plate 40, the first unidirectional outlet 72, the second unidirectional import 73, first are single To import 70, the second unidirectional outlet 71, wherein as shown in figure 16, damping and being provided with first communicated with inside on the upper surface of tank 46 Be provided on the lower face of unidirectional 70 and second unidirectional outlet 71 of import damping tank 46 the unidirectional import 73 of second communicated with inside and First unidirectional outlet 72 damps side damping push-plate 40 of the tank 46 by the second support 35 mounted on corresponding first guide rod 28 and pacifies One end that push rod 36 is damped mounted in the inside of damping tank 46 passes through resistance mounted on the other end for damping damping push rod 36 on push-plate 40 The upper side of Buddhist nun's tank 46 and the first centrifugal-block 21 connect passes through the first gas between the first unidirectional outlet 72 and the first unidirectional import 70 Pressure pipe 37, which connects, to be equipped between 38 second unidirectional outlet 71 of air bag and the second unidirectional import 73 on the first pneumatic tube 37 by the Two pneumatic tubes 39 connect and are equipped with air bag 38 on the second pneumatic tube 39.

The upper of push rod 36 is damped in 81 the second damping mechanism 81 similar to the first damping mechanism of above-mentioned second damping mechanism First unidirectional outlet 72 of the end in the first damping mechanism of downside 29 of the first drag ring 82 is in the second damping mechanism 81 70 first damping mechanism 29 of the first unidirectional import in the first unidirectional import 70 be first unidirectional in the second damping mechanism 81 It is the second unidirectional import 73 first in the second damping mechanism 81 to export the second unidirectional outlet 71 in 72 first damping mechanisms 29 The second unidirectional import 73 in damping mechanism 29 is the second unidirectional outlet 71 in the second damping mechanism 81.

The diameter of above-mentioned first unidirectional outlet 72 is 72 diameter of the first unidirectional outlet of three times of 71 diameter of the second unidirectional outlet Second unidirectional outlet identical with the diameter of the first unidirectional import 70,71 diameter and the diameter of the second unidirectional import 73 are identical.

The above-mentioned frizzen of third in the initial state 63 is located in the second limiting slot 68 on corresponding second centrifugal-block 54 the One frizzen 30 is located in the first limiting slot 41 on corresponding first centrifugal-block 21.

21 and second centrifugal-block 54 of above-mentioned first centrifugal-block will be with corresponding first triggering under one meter of speed per second Bar 30 and third frizzen 63 are detached from.

In summary：

The wheelchair that the present invention designs, if people push wheelchair walk forward the wheelchair speed of travel it is slower when, both sides driving vehicle Take turns that 5 velocities of rotation are different and so that the probability turned on one's side of wheelchair is also smaller but if when the wheelchair speed of travel is very fast, both sides Driving wheel 5 velocity of rotation is different and the wheelchair that probability that wheelchair is turned on one's side will become larger and the present invention designs is made to pass through tune Section wheelchair both sides drive the rotating speed of both sides driving wheel 5 during quick rotation of wheel 5 to be consistent, and this reduces vehicles Take turns the probability of rollover.

Before the both ends of the first swinging axle 24 are separately mounted on the first axletree 9 corresponding first eccentric groove 12 in the present invention One end of the first guide rod 28 is mounted on the first swinging axle 24 on two sides afterwards, and the first guide rod 28 is close to the first swinging axle The two sides of 24 one end in the left and right sides of corresponding first eccentric groove 12 symmetrically installation there are two the first leaf spring 26 first On the two sides of 21 upper end of centrifugal-block there is the first centrifugal-block of symmetrical cambered surface 21 to pass through the first guide groove 43 and the first guide rod 28 the first spring fixed disc 23 on the first guide rod 28 that is fitted to is mounted on the first centrifugal-block on the first guide rod 28 21 and first are equipped with 22 two the first damping mechanisms 29 of the first return spring between spring fixed disc 23 and are symmetrically mounted at The left and right sides of first guide rod 28, and two the first damping mechanisms 29 coordinate the second frizzen 31 to pass through first with centrifugal-block Corresponding second targeting port 14 is mounted on one end and corresponding first of the second frizzen 31 on the first axletree 9 on axletree 9 One end that centrifugal-block 21 coordinates the other end of the second frizzen 31 to be equipped with 27 second rack 34 of the second drive connection bar is mounted on The first frizzen of lower end 30 of second drive connection bar 27 is mounted on the by corresponding first targeting port 13 on the first axletree 9 One end of first frizzen 30 coordinates the first frizzen with the first limiting slot 41 on corresponding first centrifugal-block 21 on one axletree 9 30 other end is equipped with 20 first drive connection bar 20 of the first drive connection bar and is located at first in corresponding first regulating tank 15 The both ends that one end of rack 33 is mounted on the lower end first gear axis 32 of the first drive connection bar 20 are separately mounted to corresponding first First gear 25 is mounted on first gear axis 32 first gear 25 respectively with first on the front and rear sides face of gear mounting groove 18 Rack 33 and the engagement of the second rack 34 are when the first axletree 9 rotates so that being mounted on the first centrifugal-block 21 in the first axletree 9 When being swung towards corresponding second frizzen 31 relative to corresponding first eccentric groove 12, the first centrifugal-block 21 will push second Frizzen 31 is so that the second frizzen 31 will band away from side movement 31 movement of the second frizzen of the first centrifugal-block 21 Dynamic second drive connection bar 27 moves the second drive connection bar 27 away from first away from the side of the first centrifugal-block 21 The side movement of centrifugal-block 21 will drive the second rack 34 to move the second rack 34 away from the side of the first centrifugal-block 21 Side movement away from the first centrifugal-block 21 will make first gear 25 rotate the rotation of first gear 25 and will make the One rack 33 moves a sidesway of first rack 33 away from the first centrifugal-block 21 away from the side of the first centrifugal-block 21 It is dynamic drive the first drive connection bar 20 away from the side of the first centrifugal-block 21 move the first drive connection bar 20 away from The side movement of first centrifugal-block 21 drives the first frizzen 30 to be moved due to first away from the side of the first centrifugal-block 21 Under beginning state, the first frizzen 30 is located in the first limiting slot 41 on corresponding first centrifugal-block 21 so the first frizzen at this time 30 movements will make the first limiting slot 41 that the first frizzen 30 progressively disengages on corresponding first centrifugal-block 21 to the last complete Total detachment at this time frizzen lose the constraint to the first centrifugal-block 21 at this time the first axletree 9 rotation will be under the action of the centrifugal So that the first centrifugal-block 21 will stretch first away from side movement 21 movement of the first centrifugal-block of 9 axis of the first axletree The effect of 22 first return spring 22 of return spring is when the first axletree 9 stops operating, in the work of the first return spring 22 Under, the first centrifugal-block 21 can restore the work that the first leaf spring 26 of 28 both sides of the first guide rod is mounted on original position With being when the first axletree 9 stops operating, first guide rod 28 can restore down former under the action of two the first leaf spring 26 It is to pass through two the first damping mechanisms that the effect of the first damping mechanism 29 of 28 both sides of the first guide rod is mounted on the position come Effect of the movement speed first of 29 the first centrifugal-blocks 21 of reduction under the action of the centrifugal from cambered surface on limit block is to prevent the first centrifugation When block 21 is contacted with corresponding second eccentric groove 45, when not stuck with corresponding second eccentric groove 45 on the first centrifugal-block 21, first The effect for the escape groove 42 that centrifugal-block 21 can be smoothly through on 45 first centrifugal-block 21 of the second eccentric groove be prevent first from When being moved in corresponding second eccentric groove 45, the second guide rod 59 interferes heart block 21 with the first centrifugal-block 21.

The both ends of the second swinging axle 57 are separately mounted to correspond to the front and back of the second eccentric groove 45 in mounting ring 11 in the present invention One end of the second guide rod 59 is mounted on the second swinging axle 57 on two sides, and the second guide rod 59 is close to the second swinging axle 57 The two sides of one end in the left and right sides of corresponding second eccentric groove 45 symmetrically installation there are two the second leaf spring 60 second from On the two sides of 54 upper end of heart block there is the second centrifugal-block of symmetrical cambered surface 54 to pass through the second guide groove 69 and the second guide rod 59 The second spring fixed disc 56 that is fitted on the second guide rod 59 be mounted on the second centrifugal-block 54 on the second guide rod 59 Be equipped between second spring fixed disc 56 the 4th frizzen 64 of second return spring 61 pass through it is corresponding in mounting ring 11 Third targeting port 51 is mounted on one end of the 4th frizzen 64 in mounting ring 11 and is touched with corresponding second centrifugal-block 54 cooperation the 4th The other end of hair bar 64 is equipped with the 4th drive connection bar 62 of the 4th drive connection bar 62 and is located in corresponding 4th regulating tank 53 One end of 4th rack 67 is mounted on the lower end of the 4th drive connection bar 62, and the 4th rack 67 is located in the 4th rach slot 49 the Three frizzens 63 are mounted on one end of third frizzen 63 in mounting ring 11 by corresponding 4th targeting port 52 in mounting ring 11 Third driving is installed with the other end of the second limiting slot 68 cooperation third frizzen 63 on corresponding second centrifugal-block 54 to connect One end that 55 third drive connection bar 55 of extension bar is located at third rack 66 in corresponding third regulating tank 50 drives mounted on third The lower end of connecting rod 55, and third rack 66 is located at the both ends of second gear axis 65 in third rach slot 48 and is separately mounted to correspond to On the front and rear sides face of second gear mounting groove 47 second gear 58 be mounted on second gear axis 65 on second gear 58 respectively with Third rack 66 and the engagement of the 4th rack 67 are when mounting ring 11 rotates so that being mounted on 54 phase of the second centrifugal-block in mounting ring 11 When being swung towards corresponding 4th frizzen 64 for corresponding second eccentric groove 45, the second centrifugal-block 54 will push the 4th to touch Hair bar 64 is so that the 4th frizzen 64 will drive away from side movement 64 movement of the 4th frizzen of the second centrifugal-block 54 4th drive connection bar 62 away from the second centrifugal-block 54 side move the 4th drive connection bar 62 away from second from The side movement of heart block 54 will drive the 4th rack 67 to move 67 court of the 4th rack away from the side of the second centrifugal-block 54 The side movement far from the second centrifugal-block 54 will make second gear 58 rotate the rotation of second gear 58 and will make third Rack 66 is moved away from the side movement third rack 66 of the second centrifugal-block 54 away from the side of the second centrifugal-block 54 Drive third drive connection bar 55 away from the side movement third drive connection bar 55 of the second centrifugal-block 54 away from the The side movement of two centrifugal-blocks 54 drives third frizzen 63 to be moved due to initial away from the side of the second centrifugal-block 54 Under state, third frizzen 63 is located in the second limiting slot 68 on corresponding second centrifugal-block 54 so third frizzen 63 at this time Movement will make third frizzen 63 progressively disengage the second limiting slot 68 on corresponding second centrifugal-block 54 to the last completely Disengaging third frizzen 63, which loses the rotation of mounting ring 11 at this time of the constraint to the second centrifugal-block 54, to be made under the action of the centrifugal Side movement 54 movement of the second centrifugal-block that the second centrifugal-block 54 is obtained away from 11 axis of mounting ring will compress the second return The effect of 61 second return spring 61 of spring be when mounting ring 11 stops operating, under the action of the second return spring 61, Two centrifugal-blocks 54 can restore to be mounted on the effect of the second leaf spring 60 of 59 both sides of the second guide rod on original position to be to work as When mounting ring 11 stops operating, second guide rod 59 can restore on original position under the action of two the second leaf spring 60 Second effect from cambered surface on limit block is to prevent the first centrifugal-block 21 from being contacted with the second eccentric groove 45 of correspondence, and the second centrifugal-block 54 When not moving, the second centrifugal-block 54 is stuck by the first centrifugal-block 21.

For type leading wheel framework 1 in the present invention, one end of set casing 78 is mounted on the second drag ring of downside of wheelchair sitting frame 3 The second drag ring of arc outer inclined-plane 83 is provided on the inner headed face of 83 lower ends to be mounted under set casing 78 by the inner headed face of the upper end One end with cylinder groove 90 is mounted on the friction of inside first of set casing 78 by bearing in the periphery upper rotary shaft 77 at end It is provided with annular driver slot 92 first on the inner headed face on the periphery of 82 one end of ring with outer 91 first drag ring 82 of inclined-plane of annular Drag ring 82 is mounted on the periphery of rotation axis 77 circumferential equably installation on the periphery of driving cylinder 94, and there are three drivings Bar 87 drives cylinder 94 to be mounted in rotation axis 77 on the lower face of opened cylinder groove 90, and three drive rods 87 pass through rotation axis Clamping rings 84 is nested is mounted on for three rectangular escape groove 42 on 77 and the cooperation of annular driver slot 92 on the first drag ring 82 79 two second resistances of third return spring are installed on the periphery of rotation axis 77 between first drag ring 82 and clamping rings 84 The circumferential upside for being uniformly mounted to clamping rings 84 of Buddhist nun mechanism 81, and two the second damping mechanisms 81 are located at third return spring Mounting blocks 76 are mounted on side of the one end mounted on square groove of the downside fixing axle 80 of rotation axis 77 between 79 and rotation axis 77 On face the other end of fixing axle 80 pass through square groove be located at mounting blocks 76 outside be oriented to wheel 75 in the fixing axle 80 from Circumferential 98 centrifugal wheel 95 of multiple third eccentric grooves that is equably provided with is mounted on 76 outside of mounting blocks on the periphery of heart wheel 95 Fixing axle 80 on be respectively mounted in each third eccentric groove 98 there are one 97 each third centrifugal-block 97 of third centrifugal-block with it is corresponding Third eccentric groove 98 between be separately installed with one centrifugation 96 connecting plate 86 of spring one end be mounted on the first drag ring 82 on The lower end driving plate 85 and the cooperation of third centrifugal-block 97 first on centrifugal wheel 95 that one end of driving plate 85 is mounted on connecting plate 86 When the annular outer inclined-plane 88 on outer 91 and second drag ring 83 of inclined-plane of annular on drag ring 82 is rotated with the Guide vehicle wheel 75 that is fated, Being oriented to wheel 75 will drive the rotation rotation of fixing axle 80 of fixing axle 80 to drive the rotation rotation of centrifugal wheel 95 of centrifugal wheel 95 that will make Be mounted on third centrifugal-block 97 on centrifugal wheel 95 under the action of the centrifugal away from the side of 95 axis of centrifugal wheel movement the Three centrifugal-blocks, 97 movement will push driving plate 85 so that driving plate 85 move up that driving plate 85 moves up will the company of drive Fishplate bar 86, which moves up connecting plate 86 and moves up, will drive the first drag ring 82 to move up the first drag ring 82 to moving up It is dynamic that driving cylinder 94 will be driven to move up when the velocity of rotation for being oriented to wheel 75 reaches certain value by three drive rods 87 When, the first drag ring 82 will be contacted with the second drag ring 83, and the first drag ring 82 passes through outer 91 He of inclined-plane of annular thereon The friction of annular outer inclined-plane 88 on second drag ring 83 is in since the second drag ring 83 is mounted on set casing 78 on set casing 78 Stationary state, so the second drag ring 83 remains static, the second drag ring 83 at this time passes through the friction with the first drag ring 82 So that the first drag ring 82 remains static, the first drag ring 82 is mounted in rotation axis 77 so rotation axis 77 is in static State i.e. guiding wheel 75 will not swing back and forth and prevent from being oriented to the swing of wheel 75 and make wheelchair rollover.

The effect of the second centrifugal-block 54 is in the present invention, when the second centrifugal-block 54 is without departing from the constraint of third frizzen 63, But the first centrifugal-block 21 can stop the first centrifugation when having been detached from the constraint of the first frizzen 30 by the second centrifugal-block 54 Block 21 enter in corresponding second eccentric groove 45 so that prevent the first centrifugal-block 21 enter in corresponding second eccentric groove 45 to So that the first axletree 9 and the second axletree 44 interfere so that wheelchair rollover and the velocity of rotation when the first axletree 9 More than the velocity of rotation of the second axletree 44, and the second centrifugal-block 54 and the first centrifugal-block 21 are detached from corresponding third frizzen respectively 63 and first frizzen 30 constraint when, the displacement distance of the second centrifugal-block 54 enters second insufficient for the first centrifugal-block 21 When in eccentric groove 45, by the second centrifugal-block 54 can stop that the first centrifugal-block 21 enters in corresponding second eccentric groove 45 Prevent the first centrifugal-block 21 in the case of the velocity of rotation difference with mounting ring 11, the first centrifugal-block 21 enters corresponding second So that the first axletree 9 and the second axletree 44 interfere so that wheelchair is turned on one's side in eccentric groove 45.

Corresponding first guide rod is mounted on by the second support 35 for the first damping mechanism 29, damping tank 46 in the present invention One end that 28 side damping push-plate 40 is mounted on the inside damping push rod 36 of damping tank 46 damps on damping push-plate 40 It is unidirectional that the other end of push rod 36 passes through the upper side of damping tank 46 to connect the first unidirectional outlet 72 and first with the first centrifugal-block 21 It is connected by the first pneumatic tube 37 between import 70 and 38 second unidirectional outlet 71 and second of air bag is installed on first pneumatic tube 37 It is connected by the second pneumatic tube 39 between unidirectional import 73 and air bag 38 is installed on second pneumatic tube 39.When the first centrifugal-block 21 to When upper mobile, the first centrifugal-block 21 will drive corresponding damping push rod 36 to move up damping push rod 36 and move up drive resistance Buddhist nun's push-plate 40 moves up damping push-plate 40 and moves up that the gas in damping tank 46 positioned at upside will be pushed to pass through first is single To 72 outflow of outlet, and the gas flowed out flows into damping tank 46 due to the by the second pneumatic tube 39 by the first unidirectional import 70 The diameter of one unidirectional outlet 72 is 72 diameter of the first unidirectional outlet of three times and the first unidirectional import of 71 diameter of the second unidirectional outlet 70 identical second unidirectional outlet, 71 diameter of diameter and the diameter of the second unidirectional import 73 are identical so the first damping mechanism 29 exists First centrifugal-block 21 be upwards it is mobile during play damping action and then exactly the opposite second resistance of the second damping mechanism 81 Buddhist nun mechanism 81 plays damping action in the first frictional disk moves down.The first centrifugation is reduced when the effect of the first damping mechanism 29 The movement speed of block 21, effect when the first centrifugal-block 21 it is different from the velocity of rotation of mounting ring 11 in rotation process, and When arcwall face on first centrifugal-block 21 is not completely into corresponding second eccentric groove 45, the first centrifugal-block 21 can have enough Time, which moves out corresponding second eccentric groove 45, prevents the first centrifugal-block 21 in the situation different from the velocity of rotation of mounting ring 11 Under, the first centrifugal-block 21 enters in corresponding second eccentric groove 45 so that the first axletree 9 and the second axletree 44 occur Interference is so that wheelchair rollover.

Specific implementation mode：When the wheelchair that people are designed using the present invention, two driving wheels 5 is driven to rotate, two The driving rotation of wheel 5 will drive the first axletree 9 and the second axletree 44 to rotate when the first axletree 9 rotates so that pacifying respectively The first centrifugal-block 21 in the first axletree 9 is relative to corresponding first eccentric groove 12 towards corresponding second frizzen 31 When swing, the first centrifugal-block 21 will push the second frizzen 31 so that the second frizzen 31 is away from the first centrifugal-block 21 It moves the second frizzen 31 and moves so that the first frizzen 30 is detached from the first limiting slot 41 on corresponding first centrifugal-block 21 in side Frizzen lose the constraint to the first centrifugal-block 21 at this time the first axletree 9 rotation will under the action of the centrifugal so that first from Heart block 21 will drive 11 turns of mounting ring away from side movement the second axletree 44 rotation simultaneously of 9 axis of the first axletree It is dynamic to make the second centrifugal-block 54 being mounted in mounting ring 11 relative to corresponding second eccentric groove, 45 court when mounting ring 11 rotates When corresponding 4th frizzen 64 swing, the second centrifugal-block 54 will push the 4th frizzen 64 so that 64 court of the 4th frizzen The side far from the second centrifugal-block 54 and moving the 4th frizzen 64 and move makes third frizzen 63 be detached from corresponding second centrifugation 68 third frizzen 63 of the second limiting slot on block 54 loses the rotation of mounting ring 11 at this time of the constraint to the second centrifugal-block 54 just Can be under the action of the centrifugal so that if the second centrifugal-block 54 drives away from the mobile both sides at this time in side of 11 axis of mounting ring When the velocity of rotation of wheel 5 is very fast, the first centrifugal-block 21 being mounted on the first axletree 9 will be towards corresponding second centrifugation It moves when the velocity of rotation of the first axletree 9 and the second axletree 44 reaches consistent, is mounted on the first axletree 9 in slot 45 The first centrifugal-block 21 will be moved in corresponding second eccentric groove 45 so that the first axletree 9 and mounting ring 11 are integrally formed That is the first axletree 9 and the second axletree 44 are integrally formed i.e. wheelchair both sides driving wheel 5 and are integrally formed and prevent wheelchair quick Because two 5 rotating speeds of driving wheel are different wheelchair is turned on one's side in driving process.When people need turning, pass through control Brake control mechanism 2 processed makes the both ends of the first axletree 9 disconnect the driving wheel 5 of i.e. wheelchair both sides to control clutch Disconnect simultaneously by control brake control mechanism 2 come control driving cylinder 94 move down driving cylinder 94 drive drive rod 87 to Lower mobile drive rod 87, which moves down, drives the first drag ring 82 to move down so that the first drag ring 82 and the second drag ring 83 Disconnecting i.e. guiding wheel 75 can swing back and forth at this time by the rotating speed of the reduction wheelchair of brake control mechanism 2 when the speed of wheelchair drops When low, so that it may to drive wheel 9 to be turned to by driving.

Claims

1. a kind of wheelchair of falling-resistant, it is characterised in that：It includes type leading wheel framework, brake control mechanism, wheelchair sitting frame, wheelchair Driving mechanism, wherein wheelchair sitting frame are mounted on the upside of driving mechanism for wheel chair；Two type leading wheel frameworks are symmetrically mounted at wheelchair Lower end on front side of sitting frame；Brake control mechanism is mounted on the upside of one of handrail in two handrails on wheelchair sitting frame；

Above-mentioned driving mechanism for wheel chair includes driving wheel, the first support, shatter-resistant regulating mechanism, symmetrical wherein on shatter-resistant regulating mechanism There are two the first supports for ground installation；Wheelchair sitting frame is mounted in two first supports；Symmetrically pacify at the both ends of shatter-resistant regulating mechanism There are two drive wheel for dress；Driving has hand rim on wheel；

Above-mentioned shatter-resistant regulating mechanism includes the first position-limiting unit, the first axletree, the second position-limiting unit, mounting ring, the first centrifugation Slot, the first targeting port, the second targeting port, the first regulating tank, the second regulating tank, the first rach slot, first gear mounting groove, second Rach slot, the second axletree, the second eccentric groove, second gear mounting groove, third rach slot, the 4th rach slot, third regulating tank, Third targeting port, the 4th targeting port, the 4th regulating tank, clutch, wherein one end of the first axletree is equipped with driving wheel；The Clutch is installed on the centre position of one axletree；There are six circumferentially equably being opened on the periphery of the first axletree other end First eccentric groove；

For each first eccentric groove in six the first eccentric grooves, both sides of first eccentric groove in the first axletree circumferential direction It is provided with the first targeting port on one side therein in face, the second targeting port is provided on another side, the first targeting port is far from first The side of eccentric groove is provided with the first regulating tank, close to first wheel axle axis one end and close to the first eccentric groove in the first regulating tank One side on be provided with the first rach slot；Side of second targeting port far from the first eccentric groove is provided with the second regulating tank, and second adjusts It is provided with the second rach slot, the first rack close to first wheel axle axis one end in section slot and on the one side of the first eccentric groove Be provided with first gear mounting groove between slot and the second rach slot, first gear mounting groove respectively with the first rach slot and the second rack Slot communicates；

Six the first position-limiting units are circumferentially uniformly mounted to the inside that the first axletree is provided with first eccentric groove one end, and six First position-limiting unit coordinates with six the first eccentric grooves respectively；

One end of second axletree is equipped with driving wheel；Mounting ring is installed on the periphery of the second axletree other end；Peace Fill the second eccentric groove there are six circumferentially equably being opened on the inner headed face of ring；

For each second eccentric groove in six the second eccentric grooves, both sides of second eccentric groove in the second axletree circumferential direction It is provided with third targeting port on wherein one side in face, the 4th targeting port is provided on another side, third targeting port is far from second The side of eccentric groove is provided with third regulating tank, far from second wheel axle axis one end and close to the second eccentric groove in third regulating tank One side on be provided with the 4th rach slot；4th side of the targeting port far from the second eccentric groove is provided with the 4th regulating tank, and the 4th adjusts It is provided with third rach slot, third rack far from second wheel axle axis one end in section slot and on the one side of the second eccentric groove Be provided with second gear mounting groove between slot and the 4th rach slot, second gear mounting groove respectively with third rach slot and the 4th rack Slot communicates；

Six the second position-limiting units are circumferentially uniformly mounted to the inside of mounting ring, and six the second position-limiting units respectively with six Second eccentric groove coordinates；

The unit of first limit coordinates with corresponding second position-limiting unit；

Above-mentioned first position-limiting unit includes the first drive connection bar, the first centrifugal-block, the first return spring, the first spring fixation circle Disk, the first swinging axle, first gear, the first leaf spring, the second drive connection bar, the first guide rod, the first damping mechanism, first touch Bar, the second frizzen, first gear axis, the first rack, the second rack, the first limiting slot, escape groove, the first guide groove are sent out, In the both ends of the first swinging axle be separately mounted on the first axletree on the front and rear sides face of corresponding first eccentric groove；First is oriented to One end of bar be mounted on the first swinging axle on, and the first guide rod close to first swinging axle one end two sides with corresponding first from Symmetrically there are two the first leaf springs for installation in the left and right sides of heart slot；Have on the two sides of first centrifugal-block upper end symmetrical Cambered surface；First centrifugal-block is provided with the first guide groove of perforation in the up-down direction, and the first guide groove is located at the first centrifugal-block Centre position；It is provided with escape groove on first centrifugal-block；Escape groove is located at the upper end on the inside of the first centrifugal-block；Escape groove is led with first Coordinate to slot；The first limiting slot is provided on the outside of first centrifugal-block on left side；First centrifugal-block passes through the first guide groove and first Guide rod is fitted on the first guide rod, and is located at the first guide rod upper end；First spring fixed disc is mounted on the On one guide rod, and positioned at the downside of the first centrifugal-block；It is equipped with first between first centrifugal-block and the first spring fixed disc Return spring；Two the first damping mechanisms are symmetrically mounted at the left and right sides of the first guide rod, and two the first damping mechanisms Coordinate with centrifugal-block；Two the first damping mechanisms are between the first return spring and the first guide rod；Second frizzen is logical Corresponding second targeting port on the first axletree is crossed to be mounted on the first axletree；One end of second frizzen and corresponding first Centrifugal-block coordinates；The other end of second frizzen is equipped with the second drive connection bar；Second drive connection bar is located at corresponding the In two regulating tanks；One end of second rack is mounted on the lower end of the second drive connection bar, and the second rack is located at the second rach slot It is interior；First frizzen is mounted on by corresponding first targeting port on the first axletree on the first axletree；First frizzen One end coordinates with the first limiting slot on corresponding first centrifugal-block；The other end of first frizzen is equipped with the first drive connection Bar；First drive connection bar is located in corresponding first regulating tank；One end of first rack is mounted on the first drive connection bar Lower end, and the first rack is located in the first rach slot；The both ends of first gear axis are separately mounted to corresponding first gear mounting groove Front and rear sides face on；First gear is mounted on first gear axis；First gear is nibbled with the first rack and the second rack respectively It closes；

Above-mentioned second position-limiting unit includes the second centrifugal-block, third drive connection bar, second spring fixed disc, the second swing Axis, second gear, the second guide rod, the second leaf spring, the second return spring, the 4th drive connection bar, third frizzen, the 4th touch Bar, second gear axis, third rack, the 4th rack, the second limiting slot, the second guide groove are sent out, wherein the both ends of the second swinging axle It is separately mounted in mounting ring on the front and rear sides face of corresponding second eccentric groove；One end of second guide rod is mounted on second and swings On axis, and the second guide rod is symmetrical in the left and right sides of corresponding second eccentric groove close to the two sides of second swinging axle one end There are two the second leaf springs for ground installation；There is symmetrical cambered surface on the two sides of second centrifugal-block upper end；Second centrifugal-block is upper and lower The second guide groove of perforation is provided on direction, and the second guide groove is located at the centre position of the second centrifugal-block；Outside second centrifugal-block The second limiting slot is provided on the left side of side；Second centrifugal-block is fitted to second by the second guide groove and the second guide rod On guide rod, and it is located at the second guide rod upper end；Second spring fixed disc be mounted on the second guide rod on, and positioned at second from The downside of heart block；Second return spring is installed between the second centrifugal-block and second spring fixed disc；4th frizzen passes through Corresponding third targeting port is mounted in mounting ring in mounting ring；Match with corresponding second centrifugal-block one end of 4th frizzen It closes；The other end of 4th frizzen is equipped with the 4th drive connection bar；4th drive connection bar is located at corresponding 4th regulating tank It is interior；One end of 4th rack is mounted on the lower end of the 4th drive connection bar, and the 4th rack is located in the 4th rach slot；Third is touched Bar is sent out to be mounted in mounting ring by corresponding 4th targeting port in mounting ring；One end of third frizzen with corresponding second from The second limiting slot cooperation on heart block；The other end of third frizzen is equipped with third drive connection bar；Third drive connection bar In corresponding third regulating tank；One end of third rack is mounted on the lower end of third drive connection bar, and third rack position In in third rach slot；The both ends of second gear axis are separately mounted on the front and rear sides face of corresponding second gear mounting groove；The Two gears are mounted on second gear axis；Second gear is engaged with third rack and the 4th rack respectively；

Above-mentioned type leading wheel framework includes being oriented to wheel, mounting blocks, rotation axis, set casing, third return spring, fixing axle, second Damping mechanism, the second drag ring, driving plate, connecting plate, fixed ring, drive rod, annular outer inclined-plane, rectangular is kept away the first drag ring Allow guide groove, cylinder groove, the outer inclined-plane of annular, annular driver slot, driving cylinder, centrifugal wheel, third centrifugal-block, centrifuge spring, third Eccentric groove, wherein one end of set casing are open end；The other end of set casing is mounted on the downside of wheelchair sitting frame；Second drag ring Arc outer inclined-plane is provided on the inner headed face of lower end；Second drag ring is mounted on the outer of set casing lower end by the inner headed face of the upper end On disc；It is provided with cylinder groove on the end face of rotation axis side；Rotation axis is provided on the periphery of cylinder groove one end circumferentially equably Rectangular escape groove there are three opening；Three rectangular escape groove are communicated with cylinder groove；One end with cylinder groove passes through in rotation axis Bearing is mounted on the inside of set casing；There is the outer inclined-plane of annular on the periphery of first drag ring one end；First drag ring it is interior Annular driver slot is provided on disc；First drag ring is mounted on the periphery of rotation axis, and positioned at the downside of the second drag ring； Drive drive rod there are three circumferentially equably being installed on the periphery of cylinder；Drive cylinder installation opened cylinder groove on the rotating shaft Lower face on, and three drive rods pass through three rectangular escape groove in rotation axis and the annular driver slot on the first drag ring Cooperation；Clamping rings nesting is mounted on the periphery of rotation axis, and clamping rings is located at the downside of the first drag ring；First rubs It wipes and third return spring is installed between ring and clamping rings；Two the second damping mechanisms are circumferentially uniformly mounted to clamping rings Upside, and two the second damping mechanisms are between third return spring and rotation axis；It is opened on the upper side of mounting blocks one end There is square groove；Mounting blocks are mounted on the downside of rotation axis；One end of fixing axle is mounted on the one side of square groove；Fixing axle The other end is located at the outside of mounting blocks across square groove；Wheel is oriented to be mounted in fixing axle；It is circumferential on the periphery of centrifugal wheel Equably it is provided with multiple third eccentric grooves；Centrifugal wheel is mounted in the fixing axle on the outside of mounting blocks；Each third eccentric groove Third centrifugal-block there are one being inside respectively mounted；It is each be separately installed between third centrifugal-block and corresponding third eccentric groove one from Heart spring；One end of connecting plate is mounted on the first drag ring；One end of driving plate is mounted on the lower end of connecting plate；Driving plate with Third centrifugal-block cooperation on centrifugal wheel；Match with the annular outer inclined-plane on the second drag ring on the outer inclined-plane of annular on first drag ring It closes；

2. a kind of wheelchair of falling-resistant according to claim 1, it is characterised in that：Above-mentioned air bag is elastic balloon.

3. a kind of wheelchair of falling-resistant according to claim 1, it is characterised in that：Above-mentioned first damping mechanism includes damping Tank, the second support, damping push rod, the first pneumatic tube, air bag, the second pneumatic tube, damping push-plate, the first unidirectional outlet, the second list To import, the first unidirectional import, the second unidirectional outlet, wherein it is unidirectional to be provided with first communicated with inside on the upper surface of damping tank Import and the second unidirectional outlet；The unidirectional import of second communicated with inside and first is provided on the lower face of damping tank unidirectionally to go out Mouthful；Damp the side that tank is mounted on corresponding first guide rod by the second support；Damp the inside that push-plate is mounted on damping tank；Resistance One end of Buddhist nun's push rod is mounted on damping push-plate；The other end for damping push rod passes through the upper side of damping tank and the first centrifugal-block to connect It connects；It is connected by the first pneumatic tube between first unidirectional outlet and the first unidirectional import；Air bag is installed on first pneumatic tube；The It is connected by the second pneumatic tube between two unidirectional outlets and the second unidirectional import；Air bag is installed on second pneumatic tube.

4. a kind of wheelchair of falling-resistant according to claim 1, it is characterised in that：Above-mentioned second damping mechanism and the first resistance Buddhist nun mechanism is similar；The upper end of damping push rod in second damping mechanism is mounted on the downside of the first drag ring；First damping mechanism In the first unidirectional outlet be the second damping mechanism in the first unidirectional import；The first unidirectional import in first damping mechanism is The first unidirectional outlet in second damping mechanism；The second unidirectional outlet in first damping mechanism is the in the second damping mechanism Two unidirectional imports；The second unidirectional import in first damping mechanism is the second unidirectional outlet in the second damping mechanism.

5. a kind of wheelchair of falling-resistant according to claim 1, it is characterised in that：The diameter of above-mentioned first unidirectional outlet is Three times of second unidirectional outlet diameter；First unidirectional outlet diameter and the diameter of the first unidirectional import are identical；Second unidirectional outlet Diameter and the diameter of the second unidirectional import are identical.

6. a kind of wheelchair of falling-resistant according to claim 1, it is characterised in that：The above-mentioned triggering of third in the initial state Bar is located in the second limiting slot on corresponding second centrifugal-block；First frizzen is located at the first limit on corresponding first centrifugal-block In slot.

7. a kind of wheelchair of falling-resistant according to claim 1, it is characterised in that：Above-mentioned first centrifugal-block and the second centrifugation Block will be detached under one meter of speed per second with corresponding first frizzen and third frizzen.