CN202154807U

CN202154807U - Electric stairs-climbing wheelchair

Info

Publication number: CN202154807U
Application number: CN2011201780163U
Authority: CN
Inventors: 刘占河
Original assignee: 赵芝
Priority date: 2011-05-31
Filing date: 2011-05-31
Publication date: 2012-03-07
Anticipated expiration: 2021-05-31

Abstract

The utility model provides an electric stairs-climbing wheelchair, which can be further divided into a caring type and a self-driving type. A crawler belt walking mechanism and a crawler belt driving mechanism are equipped on a vehicle frame among front wheels and rear wheels. Front wheels are equipped on a seat. Rear wheels are equipped on a rear wheel elevating mechanism. The seat is hinged to the vehicle frame. A seat balancing mechanism is hinged to a seat support. The rear wheel elevating mechanism is hinged to the vehicle frame. A storage battery assembly is connected with a crawler belt walking motor, a seat balancing motor and a rear wheel elevating motor through a control mechanism. The power output ends of the three motors are respectively connected with the crawler belt walking mechanism, the seat balancing mechanism and the rear wheel elevating mechanism through a respective transmission mechanism. The electric stairs-climbing wheelchair in the utility model is advantageous in that the caring type is improved and the self-driving type is added; the wheelchair is safer by adopting the rubber crawler belts; and the horror felt by the disabled is eliminated by changing the stairs-climbing mode of the crawler belt into a stepless speed-adjusting one. Electric carrying tricycles are specially designed for the two types of wheelchairs which significantly outdo the same type products home and abroad in terms of driving speed and distance. Meanwhile, the inexpensive wheelchair in the utility model is easy to popularize.

Description

The electric stair climbing wheelchair

Technical field

This utility model relates to a kind of electric stair climbing wheelchair; It has two kinds of vehicles, and a kind of is nursing type, and a kind of is the self-driving type; Nursing type is used for the nursing staff and transports the downstairs last and various places that step is arranged of coming in and going out of people with disability, patient and the old people that can't walk, like market, restaurant, bathing pool etc.; The self-driving type is used for that lower part of the body deformity can not be walked but the healthy people with disability oneself of upper limb drives and goes on a journey.

Background technology

Prior art is that the patent No. of invention before me is the utility model stair-climbing wheel chair of ZL200720103908.0, and its primary structure comprises vehicle frame.Collapsible seat, front-wheel and trailing wheel, crawler travel and driving mechanism, seat balance and driving mechanism, trailing wheel go up and down and driving mechanism; Its weak point is that the crawler belt technology is advanced inadequately; Rumble seat is impracticable, and movable hand rail is bad to be made, and climbs building speed and can not transfer; And have only nursing type, lack the self-driving type.

Summary of the invention

The purpose of this utility model just provides a kind of electric stair climbing and swings chair, and it not only has nursing type, also has the self-driving type; Can satisfy demand without the type people with disability; It is as safe as a house that it not only climbs the building, and also than superior many of like product, price is low in addition for the ground running performance.

The technical scheme of this utility model is: comprise that front-wheel, trailing wheel, vehicle frame, seat, creeper undercarriage and driving mechanism, seat balanced controls and driving mechanism, trailing wheel elevating mechanism and driving mechanism, front-wheel are installed on the seat, trailing wheel is installed on the trailing wheel elevating mechanism; Creeper undercarriage and driving mechanism are installed on the vehicle frame between front-wheel and the trailing wheel; Seat and vehicle frame are hinged; Seat balance and driving mechanism are contained in vehicle frame top; The push-pull bar and the seat of balanced controls are hinged; Trailing wheel elevating mechanism dress and vehicle frame both sides; The trailing wheel lift drive mechanism is contained in vehicle frame top, it is characterized in that: said crawler travel driving mechanism, seat balance driving mechanism and trailing wheel lift drive mechanism all are connected with a controlling organization, and described driving mechanism comprises accumulator cell assembly, direct current generator and connecting gear; Accumulator cell assembly is connected through the direct current generator of controlling organization with described crawler travel driving mechanism, seat balance driving mechanism and trailing wheel lift drive mechanism, and the outfan of direct current generator is connected with described creeper undercarriage, seat balanced controls and trailing wheel elevating mechanism through drive mechanism.

The utility model has the advantages that: 1 has adopted safest crawler belt to climb the building mode, climbs building speed and can be in per minute 0-5 rice regulates arbitrarily, so can adopt very slow speed downstairs the time, has increased the people with disability and has taken the security that is; Wheel diameters are 1.5 times of like product diameter before 2, and back wheel diameter is 2-5 times, so many relatively trippingly during ground running, and the ground running of this utility model can adopt dual mode in addition, i.e. manpower and electronic.Lean on manpower in the time of closely, capable of using when remote is that its supporting electro-tricycle is as means of transport specially.

This electro-tricycle afterbody is provided with folding ramp, and stair-climbing wheel chair can directly be pushed to or open up and be fixing fast, and it also is divided into nursing property and self-driving type.During the supporting use of stair-climbing wheel chair and electro-tricycle, be that travel speed, distance, obstacle detouring hinder ability all to substantially exceed the home-made stair-climbing wheel chair of state-of-the-art in the world at present method.4 prices are low, the home-made stair-climbing wheel chair price of method RMB22 ten thousand, and this utility model adds that supporting with it delivery tricycle price also only is equivalent to 1/12 of method home made article, is fit to China wage-earners buy, and is easy to promote.

Below in conjunction with embodiment and accompanying drawing this utility model is further specified.

Description of drawings:

Fig. 1 is the construction profile of the nursing type of this utility model;

Fig. 2 is the construction profile of the self-driving type of this utility model;

Fig. 3 is the left view of the nursing type of this utility model;

Fig. 4 is the left view of the self-driving type of this utility model;

Fig. 5-the 1st, the body frame structure for automotive sketch map of this utility model, Fig. 5-the 2nd, the vertical view of Fig. 5-1, Fig. 5-the 3rd, the A-A view of Fig. 5-1; Fig. 6-the 4th, the B-B view of Fig. 5-1; Fig. 5-the 5th, the C of Fig. 5-1 be to partial view, Fig. 5-the 6th, track view before the figure, Fig. 5-the 7th, figure adjustable plate view;

Fig. 6-the 1st, nursing type seat support front view; Fig. 6-the 2nd tells the left view of 6-1; Fig. 6-the 3rd, the A of Fig. 6-1 are to partial view, and figure

is a seat support datum axle structure chart;

Fig. 7-the 1st, self-driving type seat support front view, Fig. 7-the 2nd, the apron plate view, Fig. 7-the 3rd, left backplate view, Fig. 7-the 4th, right backplate view, Fig. 7-the 5th, the A of Fig. 7-1 is to partial view;

Fig. 8-the 1st, the right armrest sketch map of self-driving type, Fig. 8-the 2nd, left handrail partial view, Fig. 8-the 3rd, frid front view; Fig. 8-the 4th, the frid vertical view; Fig. 8-the 5th, slide bar front view, Fig. 8-the 6th, cramp bar front view, Fig. 8-the 7th, speed-regulating handle bar support front view; Fig. 8-the 8th, the left view of Fig. 8-7, Fig. 8-the 9th, self-driving type button box front view;

Fig. 9-the 1st, operating handle installation diagram, Fig. 9-the 2nd, the vertical view of Fig. 9-1;

Figure 10-the 1st, head pillow structure sketch map, Figure 10-the 2nd, the left view of Figure 10-1;

Figure 11-the 1st, back structure sketch map, Figure 11-the 2nd, the left view of Figure 11-1, Figure 11-the 3rd, collar front view on the seat belt;

Figure 12-the 1st, chair base structure sketch map, Figure 12-the 2nd, the left view of Figure 12-1;

Figure 13-the 1st, front-wheel shock-damping structure sketch map, Figure 13-the 2nd, Figure 13-1 removes the left view of front-wheel, Figure 13-the 3rd, damping arm; Figure 13-the 4th, the vertical view of Figure 13-3, Figure 13-the 5th, damping spring front view;

Figure 14-the 1st, crawler travel and driving mechanism structure sketch map;

Figure 15-the 1st, the rear supporting wheel front view; Figure 15-the 2nd, the cutaway view of Figure 15-1, Figure 15-the 3rd, supporting shaft front view, Figure 15-the 4th, track drive gear wheel front view; Figure 15-the 5th, the cutaway view of Figure 15-4; Figure 15-the 6th drives gear wheel baffle plate front view, Figure 15-the 7th, main shaft front view, Figure 15-the 8th, roller axle baffle plate front view;

Figure 16-the 1st, the preceding crawler belt figure of local form, Figure 16-the 2nd, the back crawler belt figure of local form, Figure 16-the 3rd, crawler tensioning bolt view; Figure 16-the 4th, the bottom view of Figure 16-3; Figure 16-the 5th, preceding crawler belt supporting gear wheel front view, Figure 16-the 6th, the cutaway view of Figure 16-5, Figure 16-the 7th, preceding crawler belt supporting roller axle;

Figure 17-the 1st, contact roller structural representation, Figure 17-the 2nd, contact roller arm configuration sketch map, Figure 17-the 3rd, all sketch maps of contact roller; Figure 17-the 4th, contact roller spring sketch map; Figure 17-the 5th, contact roller structural representation, Figure 17-the 6th, contact roller shaft-cup, Figure 17-the 7th, the right view of Figure 17-6;

Figure 18-the 1st, seat balance and driving mechanism sketch map; Figure 18-the 2nd, right crank cutaway view, Figure 18-the 3rd, right crank front view, Figure 18-the 4th, left crank front view; Figure 18-the 5th, the push-pull bar cutaway view; Figure 18-the 6th, push-pull bar front view, Figure 18-the 7th, push-pull bar axle, Figure 18-the 8th, push-pull bar upper bracket axle sketch map;

Figure 19-the 1st, trailing wheel lift drive mechanism sketch map, Figure 19-the 2nd, crank structure sketch map, Figure 19-the 3rd, crank axle sketch map; Figure 19-the 4th, the female sketch map of crank axle axle, Figure 19-the 5th, connecting axle nut, Figure 19-the 6th, connecting axle bearing cutaway view; Figure 19-the 7th, connecting axle bearing front view, Figure 19-the 8th, left connecting axle front view, Figure 19-the 9th, the right view of Figure 19-8; Figure 19-the 10th, right connecting axle front view, Figure 19-the 11st, the left view of Figure 19-10;

Figure 20-the 1st, trailing wheel elevating mechanism structural representation, Figure 20-the 2nd, the vertical view of Figure 20-1, Figure 20-the 3rd, up-down arm axle front view; Figure 20-the 4th, push-pull bar axle front view; Figure 20-the 5th, baffle plate front view, Figure 20-the 6th, the cutaway view of Figure 20-5, Figure 20-the 7th, hind axle structure chart;

Figure 21-the 1st, left lifting arm, Figure 21-the 2nd, the vertical view of Figure 21-1, Figure 21-the 3rd, push-pull bar front view, Figure 21-the 4th, the vertical view of Figure 21-3;

Figure 22-the 1st, hand push circle front view, Figure 22-the 2nd, the left view of Figure 22-1;

Figure 23-the 1st, seat balance motor travel switch installation diagram, Figure 23-the 2nd, travel switch rack assumption diagram;

Figure 24-the 1st, trailing wheel lifting motor travel switch installation diagram, Figure 24-the 2nd, travel switch rack assumption diagram;

Figure 25-the 1st, distribution box front view, Figure 25-the 2nd, distribution box left view;

Figure 26-the 1st, accumulator box structure chart, Figure 26-the 2nd, the bottom view of Figure 26-1, Figure 26-the 3rd, pressing plate front view, Figure 26-the 4th, the vertical view of Figure 26-3;

Figure 27 is crawler travel circuit for controlling motor figure;

Figure 28 is seat balance motor control circuit figure;

Figure 29 is trailing wheel lifting motor control circuit figure.

Description of reference numerals: A vehicle frame, B1 nursing type seat, B2 self-driving type seat, C creeper undercarriage, D track driving mechanism, Building E chair balance and driving mechanism, F trailing wheel elevating mechanism, G trailing wheel lift drive mechanism, H accumulator cell assembly, I1 nursing type controlling organization; I2 self-driving type controlling organization, 1 front-wheel (2), 2 trailing wheels (2), 3 preceding crawler belts (2), 4 back crawler belts (2), 5 self-driving type seat supports, 6 left backplates, 7 seat supports, 8 handrails (2), 9 chair back; 10 chairs pillow, 11 operating handles, the 12 front safety belt collars (2), 13 seat balance motors, 14 trailing wheel lifting decelerators, 15 accumulator boxes, 16 contact rollers (2), 17 trailing wheel lifting motors, 18 back track drive gear wheels (2), 19 apron plates; 20 hand push circles (2), 21 main shafts, 22 chains, 23 spindle bearing holders (2), 24 self-driving type speed-regulating handle bars, 25 self-driving type button boxes, 26 preceding supporting shaft supports (2), 27 preceding track sliding plate supports, 28 distribution box supports, 29 balances are slowed down and base; 30 accumulator box padlocks, 31 contact roller supporting arm supports (2), 32 contact roller extension spring supports (2), 33 back support wheel bracing struts (2), 34 preceding tracks, 35 crawler travels slow down and base, 36 back tracks (2), 37 accumulator box bases, 38 seat support seats (2), 39 up-down arm axles (2); 40 trailing wheel lifting decelerator bases, 41 main shaft bearing seat supports, the 42 connecting axle supports of bearing, 43 pedals, 44 front-wheel wheel fork supports, 45 side guard plate installing holes (3), 46 marshall springs supports (4), 47 seat support bases (2), 48 handrail support shaft bars (2), the 49 back seat belt collars (2); 50 sliding rod racks (2), 51 handles, 52 nursing type button boxes and electric-quantity display device support, 53 nursing type speed-regulating handle bar supports, 54 chairback brace installing holes (4), 55 seat balance push-pull bar upper brackets (2), 56 apron plate installing holes (4), 57 self-driving type seat supports, 58 charging socket installing holes, 59 right backplates; 60 power supplys institute installing hole, 61 fuse installing holes, 62 slide bars (2), 63 handrails (2), 64 armrest support stalk upper brackets (2), 65 armrest support stalk (2), 66 self-driving type battery indicator supports, 67 slide bar clamps (2), 68 self-driving type button boxes; 69 self-driving type speed-regulating handle bar supports, 70 handrail frids (2), 71 frid fixing holes (8), 72 slide bar clamp holes, 73 slide bar clamp supports, 74 nursing type button boxes and battery indicator box, 75 chairs pillow arm, 76 chairs pillow arm upper bracket, 77 chairs pillow arm lower carriage; 78 chairback braces, 79 chairback brace bolts (4), 89 chairback brace installing holes (12), 81 seat brackets, 82 seat bracket bolts (4), 83 seat bracket installing holes (12), 84 front-wheel wheel forks, 85 damping spring upper brackets, 86 damping springs; 87 damping spring lower carriages, 88 damping arms, 89 front-wheel wheel shaft bayonet sockets (2), 90 damping arm installing holes (2), 91 spindle sprockets, 92 crawler travel speed reducer sprocket wheels, 93 rear supporting wheels (2), 94 rear supporting wheel wheel shafts (2), 95 crawler travel motors; 96 crawler travel speed reducers, 97 preceding track drive gear wheels, 98 preceding bogie wheels, 99 drive gear wheel baffle plates (8), 100 baffle plate installing holes (6), bogie wheel wheel shafts before the 101 crawler tensioning bolts (6) 102,103 contact roller support arms, 104 compress wheel shaft, and 105 weeks covered; 106 extension springs, 107 press contact roller arm installing hole, 108 extension spring installing holes, 109 seat balance reductors, 110 crank axles, 111 travel switch limiting plates, 112 left cranks, 113 crank trip bolts (2), 114 push-pull bar axles (2); 115 push-pull bars (2), 116 travel switch right limit plates, 117 right cranks, 118 connecting axle bearings (2), 119 left connecting axles, 120 right connecting axles, 121 travel switch limiting plates (2), 122 right cranks, 123 crank axles (2); 124 push-pull bars (2), 125 left lifting arms, 126 push-pull bar axles (2), 127 hind axle axis holes, 128 baffle plates (2), 129 push-pull bar lower carriages, 130 seat balance motor travel switch supports, 131 trailing wheel lifting motor travel switch supports, 132 distribution boxs; 133 distribution box bases, 134 seat support datum axles (2), 135 crawler tensioning bolt adjustable plates (6), 136 left cranks, 137 back track drive gear wheel baffle plates, 138 connecting axle nuts, 139 crank axle nuts, 140 right lifting arms, 141 hind axles; 142 lifting arm axis holes, the travel switch of 143 seat balance motors (2), the travel switch of 144 trailing wheel lifting motors (2), 145 seat balance motor travel switch installing holes (2), 146 trailing wheel lifting motor travel switch installing holes (2), 147 nursing type crawler travel buttons, 148 nursing type trailing wheel lifting buttons, 149 nursing type seat balance buttons, 150 nursing type speed-regulating handle bars; 151 battery indicator, 152 accumulator out-put supply sockets, 153 self-driving type speed-regulating handle bars, 154 self-driving type crawler travel buttons, 155 self-driving type trailing wheel lifting buttons, 156 self-driving type seat balance buttons, 157 pressing plates, 158 stair-climbing wheel chair fixed bars, the collar on the 159 back seat belt.

The specific embodiment:

Referring to Fig. 1-Fig. 4, this utility model comprises vehicle frame A, seat B1, B2, creeper undercarriage C, track driving mechanism D, seat balance and driving mechanism E, trailing wheel elevating mechanism F, trailing wheel lift drive mechanism G, accumulator cell assembly H and controlling organization I1, I2.Front-wheel 1 be contained in seat support 44 on, trailing wheel 2 is contained on the terminal hind axle of the lifting arm of trailing wheel elevating mechanism F.Creeper undercarriage C and driving mechanism D are contained on the vehicle frame between the front and back wheel, lean on the chain transmission between them.Seat support seat 47 is hinged on the vehicle frame top axis hole 38.The push-pull bar upper end of seat balanced controls E is hinged on the seat support 55, and the lower end is hinged on the crank axle 110 of seat balance reductor.Seat balance motor 13 is fixed by bolts on the reductor 109; Reductor 109 is fixed by bolts on the reductor support 29 on vehicle frame top; The lifting arm 125 of trailing wheel elevating mechanism F is hinged on the up-down arm axle 39 on the vehicle frame; Up-down push-pull bar 124 lower ends are hinged on the push-pull bar support 129; The upper end is hinged on the crank axle of trailing wheel lifting decelerator 14, and the motor 17 of trailing wheel lift drive mechanism G is fixed by bolts on the reductor 14, and reductor is fixed by bolts on the reductor base 40 of vehicle frame A.The accumulator box of accumulator cell assembly H is fixed on the base 37 on the vehicle frame A with padlock 30 and pressing plate 157, and four accumulator are arranged in the box.Distribution box 132 is fixed by bolts on the base 28 on the vehicle frame A, and DC motor controller, relay, undervoltage alarm, input and out-put supply socket, control line socket are housed in the distribution box.

Referring to Fig. 5, the structure of expression this utility model vehicle frame A is welded with back track 36 (2), crawler travel speed reducer seat 35 on the vehicle frame A; Seat balance reducer pedestal 29, trailing wheel lifting decelerator seat 40, up-down arm axle 39 (2), accumulator box base 37; Padlock seat (2), preceding bogie wheel support 26, rear supporting wheel bracing strut 33 (2), tensioning bolt adjustable plate 136 (6); The mounting bracket 27 of preceding track 34, distribution box support 28, seat support hinge hole 38 (2), contact roller arm support 31; Contact roller spring lower carriage 32, connecting axle bearing base 42 (2), spindle bearing holder base 41 (2).

Referring to Fig. 6-Figure 12; Seat B1 of expression this utility model and the structure of B2, front-wheel 1 (2) is contained on the support 44 (2) on the seat support, and seat support datum axle 134 (2) is installed in the installing hole that seat support base 47 (2) is gone up

; Pedal 43 is welded on the seat support front portion; Apron plate 19 is fixed by bolts on the apron plate installing hole 56 (4), and left backplate 6 and right backplate 59 are fixed by bolts to respectively on the installing hole 45 (6) of the seat support left and right sides, and front safety belt is installed on the seat belt collar 12 (2); Back seat belt is installed on the collar 49 on (2) and the last collar 159; Seat support 7 is screwed on seat bracket 81, and seat bracket is fixed on marshall springs top, and the marshall springs bottom is fixed by bolts on the marshall springs lower carriage 46 (4); The chair back 9 is screwed on chairback brace 78; Chairback brace 78 is fixed by bolts on the installing hole 54 (4) on the seat bracket, and nursing type button box support 52 is welded on the seat support top with speed-regulating handle bar support 53, and button box 74 is fixed by bolts on the button box support 52; Speed-regulating handle bar is fastened on the speed-regulating handle bar support 53 with screw; Chair pillow 10 is fixed by bolts on the chair pillow rack 76, and this support and chair pillow arm 75 are hinged, and chair pillow arm is hinged on the support 77 on seat support top.Movable hand rail rear portion and slide bar 62 plug, and bottom and support bar 65 are hinged, and (2) are hinged for slide bar rear portion and sliding rod rack 50; Sliding rod rack is welded on the seat support both sides; (2) are hinged for support bar bottom and lower carriage 48, and the support 64 on top and the frid is hinged, and the base 73 of cramp bar upper bracket 64 and slide bar clamp 67 all is welded on the frid 70 (2); The button box of self-driving type, battery indicator box are welded on left frid bottom, and speed-regulating handle bar support 69 is welded on right frid bottom.

Referring to Figure 13, the front-wheel shock-damping structure of expression this utility model, front-wheel 1 is installed on the damping arm card 89 (2), and damping arm 88 is hinged with front-wheel wheel fork 84, and damping spring top and upper bracket 85 are hinged, and bottom and lower carriage 87 are hinged.

Referring to Figure 14-Figure 16; The creeper undercarriage and the driving mechanism of expression this utility model; Crawler belt supporting gear wheel 98 before its walking mechanism comprises, wheel shaft 102, tensioning bolt 101 (6), adjustable plate 136 (6), preceding track 34 and back track 36 (2), rear supporting wheel 93 (2).Wheel shaft 94 (2).Crawler belt is processed by high-strength rubber lining cloth; Front and back crawler belt internal tooth is trapezoidal; Preceding crawler belt external tooth is the flat tooth of with groove, and back crawler belt external tooth is a triangle, and preceding crawler belt is installed on the preceding track through preceding bogie wheel, front wheel driving gear wheel; Back crawler belt is installed on the track of back through rear drive gear wheel and rear supporting wheel, and it is the scalable track tension that tensioning bolt matches with adjustable plate.The track drive structure of this utility model is made up of direct current generator 95, worm speed reducer 96, reductor sprocket wheel 92, chain 22, spindle sprocket 91, main shaft 21, main shaft bearing and bearing block 23 (2), preceding track drive gear wheel 97 (2), back track drive gear wheel 18 (2), gear wheel baffle plate 99 (8), roller axle baffle plate 137 (2) and baffle plate bolt.Be fixed on the two ends of main shaft 21 to roller axle baffle plate 137 (2) with bolt, be used to block back track drive gear wheel.Crawler belt was creeped downwards when motor 95 was left-handed, upwards creeped during dextrorotation.

Figure 17 is a back crawler belt contact roller structure, and it comprises contact roller 16, wheel shaft 104, contact roller supporting arm 103, extension spring 106, end cap 105.Hook in the extension spring 106, hook advance in the hole 108 on the supporting arm 103, and the lower end is fixed by bolts on the support 32 (2) on the vehicle frame A, and supporting arm 103 is hinged on the support 31 on the vehicle frame A through rear portion installing hole 107.

The structure of Figure 18 formula seat balanced controls and driving mechanism, balanced controls are made up of push-pull bar 115 (2), and the push-pull bar upper end is hinged with the support 55 on the seat support.Driving mechanism is by direct current generator 13 and worm speed reducer 109, left crank 112, right crank 117, crank axle 110 (2), push-pull bar axle 114 (2), stroke limit plate 111 and 116.Crank is hinged through crank axle and push-pull bar.Rotatablely moving of crank is converted into moving up and down of push-pull bar, and seat is anterior to rise or descend thereby drive, and just can keep level when seat is climbed the building more like this.

Figure 19 is the trailing wheel elevator drive machine; It comprises that direct current generator 17, worm speed reducer 14, left connecting axle 119, right connecting axle 120, connecting axle bearing 18 (2), left crank 136, right crank 122, crank axle 123 (2), female 139 (2) of axle, female 138 (2) of axle, stroke limit plate 121 (2), left and right sides connecting axle are keyed on the connecting axle; Crank is installed in through band tapering square hole on the band tapering square shaft of connecting axle and with nut 138 and fixes, and bearing block 118 usefulness nuts are fixed on the support 42 (2) at vehicle frame A top.The upper end of crank axle and trailing wheel up-down push-pull bar 124 is hinged, when the crank left rotation and right rotation, drives push-pull bar and moves up and down, and moves up and down thereby drive the lifting arm end, trailing wheel is risen or decline.

Figure 20-Figure 22 is the trailing wheel elevating mechanism, and it comprises left and right sides lifting arm 140,125, push-pull bar 124 (2), and baffle plate 128 (2), push-pull bar axle 126 (2), hind axle 141 (2) and hand push circle 20 (2) are formed.Lifting arm is contained on lifting arm week 39 through axis hole 142 and blocks with baffle plate 128, and baffle plate is screwed.The push-pull bar lower end is hinged on the support 129, and hind axle 141 is welded on the lifting arm hole 127 (2), and trailing wheel is contained on the hind axle, and hand push circle 20 is fixed by bolts on the rim of trailing wheel.

Figure 23 is a seat balance travel switch installation diagram; Travel switch 143 (2) is installed on the support 130 through installing hole 145 (2); Support 130 is fixed by bolts to the top of balance reductor, and when the reductor crank rotated to peak or minimum point, the stroke limit plate was just taken turns jack-up with travel switch; So circuitry cuts---relay outage---motor stall, thus reach the purpose that control seat balance and front-wheel, preceding crawler belt go up and down.

Figure 24 is a trailing wheel lifting travel switch installation diagram; Travel switch 144 (2) is installed on the support 131 through installing hole 146 (2), the installation of turning upside down of two travel switches, and support 131 is fixed by bolts to trailing wheel lifting decelerator rear portion; When the reductor crank rotates to peak or during minimum point; Corresponding stroke limit plate is just taken turns jack-up with the travel switch of correspondence, so corresponding relay just cuts off the power supply---and motor stall, trailing wheel just stop at highest order or lowest order; Back crawler belt then is parked in lowest order or highest order, thereby reaches the purpose of control trailing wheel and back crawler belt up-down.

Fig. 9 is nursing type speed-regulating handle bar and button installation diagram; Button box 74 and speed-regulating handle bar 150 are screwed on the button box of (seeing Fig. 6-1) on the support on the seat support 52 three buttons are housed; Be crawler travel button 147, trailing wheel lifting button 148, seat balance button 149; The button zero-bit is outage, and one for rising or up, and two for falling or descending.One of Push button 147 rotates speed-regulating handle bar, and crawler belt is promptly descending, and the speed-regulating handle bar angular turn is big more, and the speed of travel is fast more, and its speed can be regulated arbitrarily in per minute 0-5 rice.Button 148,148 is three SRs, press the button 148 one, trailing wheel rises, and decontrols then to stop to rise, as not decontroling, just travel switch can be cut off the electricity supply and stopped to rise when treating that trailing wheel rises to highest order; Press second trailing wheel and descend, decontrol and then stop to descend, as not decontroling, just travel switch can be cut off the electricity supply and stopped to descend when treating that trailing wheel is reduced to lowest order; When trailing wheel rose or descend, back crawler belt just can be done rightabout motion.Press the button 149 one, front-wheel rises, and decontrols then to stop to rise, as not decontroling, just travel switch can be cut off the electricity supply and stopped to rise when treating that front-wheel rises to highest order; Press the button 149 two, front-wheel descends, and decontrols then to stop to descend, as not decontroling, just travel switch can be cut off the electricity supply and stopped to descend when treating that front-wheel is reduced to lowest order; When front-wheel rose or descend, preceding crawler belt just can be done rightabout motion, and

button

148 and 149 is used just can accomplish the conversion of crawler travel to the wheel walking.

Figure 25 is a distribution box 132, and its base 133 is fixed by bolts on the support 28 on the vehicle frame A, in the distribution box case DC motor controller is housed; Be used to control the crawler travel motor; Three group relaies (6) are housed in the case, are respectively applied for the rotating of control crawler travel motor, seat balance motor and trailing wheel lifting motor, a direct current transducer is housed in the case; 48VDC is become 24VDC; Be used for relay suction bag power supply, undervoltage alarm, control line socket, input supply socket, charging socket also be housed, the supply socket of crawler travel motor power socket, the supply socket of seat balance motor and trailing wheel lifting motor in the distribution box.

Figure 26 is an accumulator box 15, and it is to be fixed on the accumulator and base 37 on the vehicle frame A with padlock 30 (2) and pressing plate 157, and four accumulator are equipped with in its inside, and supply socket 152 is housed.

Figure 27 is power supply of crawler travel motor and control circuit; Comprise direct current generator M1, DC motor controller, dc source E (shared), direct current transducer 3HE (shared), power supply lock SA (shared), button 147 (nursing type), button 153 (self-driving type), relay K A1, KA2, this group relay is used to control the rotating of motor M 1.

Figure 28 is power supply of seat balance motor and control circuit; Comprise direct current generator M2, dc source E (shared); Direct current transducer 3HE (shared), power supply lock SA (shared), travel switch SP1, SP2; Button 149 (nursing type), button 156 (self-driving type), relay K A3, KA4, this group relay is used to control the rotating of motor M 2.

Figure 29 is the power supply and the control circuit of trailing wheel lifting motor; Comprise direct current generator M3, dc source E (shared); Direct current transducer 3HE (shared), power supply lock SA (shared), travel switch SP3, SP4; Button 148 (nursing type), button 155 (self-driving type), relay K A5, KA6, this group relay is used to control the rotating of motor M 3.

Doing one with regard to each mechanism cooperatively interacting in actual use below specifies:

When level walking, stair-climbing wheel chair leans on the four wheels walking, and method for using is identical with general wheelchair; Downstairs and when climbing step, lean on crawler travel last, its hints on operation is on top of by the transition of platform to step.

With the nursing type stair-climbing wheel chair upstairs is the example explanation:

Earlier back crawler belt afterbody is propped up first step, tap one of button 149 then, front-wheel is lifted away from ground, crawler belt lands before letting; Press the button then 147 one, rotate speed-regulating handle bar 150, back crawler belt is upwards creeped, and bites step edge; Tap one of button 148 this moment, and trailing wheel is raised up to highest order, rotates speed-regulating handle bar again, and crawler belt just begins to climb step; Seat is run-off the straight gradually, so tap button 149, makes seat recovery level continue to creep, when creeping to the last step again; Reduced Speed Now when trailing wheel is crossed the last step, clicks two of button 148, and trailing wheel is put down; Continue again after trailing wheel lands upwards to creep, and adjust the seat level at any time, cross last step until preceding crawler belt front portion, press the button this moment 149 two; With preceding crawler belt pull-up, let front-wheel land, just accomplished conversion this moment by the walking of crawler belt becrawl four-wheel.Operational approach in the time of downstairs then in contrast.

Claims

1. electric stair climbing wheelchair; Divide nursing type and self-driving type; Comprise front-wheel, trailing wheel, vehicle frame, seat, creeper undercarriage and driving mechanism, seat balanced controls and driving mechanism, trailing wheel elevating mechanism and driving mechanism, front-wheel is installed on the seat, and trailing wheel is installed on the trailing wheel elevating mechanism; Creeper undercarriage and driving mechanism are installed on the vehicle frame between front-wheel and the trailing wheel; Seat and vehicle frame are hinged, and seat balance and driving mechanism are installed in vehicle frame top, balanced controls and seat and are hinged, and the trailing wheel elevating mechanism is loaded on the vehicle frame both sides; The trailing wheel lift drive mechanism is loaded on vehicle frame top, it is characterized in that: said crawler travel driving mechanism, seat balance driving mechanism and trailing wheel lift drive mechanism all are connected with a controlling organization; Described driving mechanism comprises accumulator cell assembly, direct current generator and actuating device; Accumulator cell assembly is connected through the direct current generator of controlling organization with described crawler travel driving mechanism, seat balance driving mechanism and trailing wheel lift drive mechanism, and the clutch end of direct current generator is connected with described creeper undercarriage, seat balanced controls and trailing wheel elevating mechanism through drive mechanism.

2. electric stair climbing wheelchair according to claim 1 is characterized in that: described creeper undercarriage and driving mechanism are made up of walking mechanism and driving mechanism, wherein:

Crawler belt and front and back track before and after described creeper undercarriage comprises, each two on front and back crawler belt, preceding crawler belt is arranged side by side; Arrange about back crawler belt that crawler belt is the manufacturing of high-strength rubber lining cloth, front and back crawler belt internal tooth is trapezoidal; Preceding crawler belt external tooth is the flat tooth of with groove, and back crawler belt external tooth is a triangle; One on preceding track, two preceding crawler belts are shared, and two on back track is welded on the vehicle frame both sides respectively, and preceding track is fixed by bolts to the vehicle frame front portion, and the front and back track is skateboard structure, and crawler belt is through bogie wheel and drive the gear wheel installation in orbit, and back crawler belt is provided with contact roller;

Described crawler travel driving mechanism comprises direct current generator and drive mechanism; Described drive mechanism comprises worm speed reducer, reductor sprocket wheel; The reductor sprocket wheel is keyed on the deceleration arbor, and spindle sprocket and front and back reductor drive gear wheel and all be keyed on the main shaft, and main shaft is fixed on the described vehicle frame base through two bearings and bearing block; Described direct current generator is connected with the worm speed reducer one, and is fixed by bolts on the reducer pedestal of vehicle frame.

3. electric stair climbing wheelchair according to claim 1; It is characterized in that: described seat balanced controls and driving mechanism comprise balanced controls and driving mechanism; Wherein balanced controls are made up of push-pull bar, and this push-pull bar upper end is hinged with the push-pull bar support on the seat; Described driving mechanism is made up of direct current generator that has worm speed reducer and left and right sides crank, and direct current generator is connected with the worm speed reducer one, and reductor is fixed by bolts to vehicle frame top, and left and right sides crank and balance push-pull bar are hinged.

4. electric stair climbing wheelchair according to claim 1 is characterized in that: described trailing wheel elevating mechanism and driving mechanism comprise elevating mechanism and driving mechanism, wherein:

Described trailing wheel elevating mechanism is made up of lifting arm, up-down arm axle, push-pull bar, hind axle, trailing wheel and hand push circle; Lifting arm is articulated on the up-down arm axle, and the up-down arm axle is welded on the column at vehicle frame middle part, and the push-pull bar lower end is hinged on the lifting arm; The upper end is hinged on the reductor crank axle of trailing wheel lift drive mechanism; Described trailing wheel is installed on the hind axle, and hind axle is welded on the lifting arm end, and the hand push circle is fixed by bolts on the trailing wheel rim;

Described trailing wheel lift drive mechanism comprises direct current generator, worm speed reducer, left and right sides connecting axle, left and right sides crank, crank axle; Direct current generator is connected with the reductor one; Reductor is fixed by bolts on the support on vehicle frame top, and left and right sides connecting axle is connected with key with the deceleration arbor, and a bearing is respectively arranged on the connecting axle of the left and right sides; Its bearing block is fixed by bolts on the base of both sides, vehicle frame top; Left and right sides crank is installed on the vertical band tapering of the connecting axle square shaft through the band tapering square hole on the crank, and fixes with nut, and crank axle is articulated in the push-pull bar top of lifting arm.

5. electric stair climbing wheelchair according to claim 1; It is characterized in that: described seat comprises seat support, front-wheel, pedal, apron plate, left-and-right guard board, seat support, marshall springs, the chair back, movable hand rail, seat belt, nursing type is equipped with operating handle and chair pillow up and down; Speed-regulating handle bar and button box are contained on the operating handle, and the button box of self-driving type and speed-regulating handle bar are installed in respectively on the handrail of the left and right sides; Front-wheel is installed in the seat support front lower place, and pedal is welded on the seat support front lower place, and following seat belt is installed in down on the seat belt collar; The collar is welded on the seat support lower pillar stand, and apron plate is installed between the seat support lower pillar stand, and left-and-right guard board is installed in the lower pillar stand left and right sides; Seat support is screwed on seat bracket, and seat bracket is fixed by bolts to marshall springs top, and the marshall springs bottom is fixed by bolts on the marshall springs lower carriage; Lower carriage is welded on the seat support curb girder, and the chair back is screwed on chairback brace, and chairback brace is fixed by bolts to seat support top; The collar is fixed by bolts to chair back upper left quarter on the last seat belt, and movable hand rail is installed on slide bar and the cramp bar, and insert in the chute of handrail the front portion of slide bar; The rear portion is hinged on the sliding rod rack, and this support is welded on the seat support upper pillar stand outside, in the bracket holes of support bar upper articulation on the handrail frid; The lower end is hinged on the cramp bar support, and this support is welded on the seat support column outside, blocks with the slide bar clamp when slide bar keeps flat; Last seat belt is installed on the seat belt collar; The last collar is welded on the seat support upper pillar stand, and operating handle bottom column is welded on the vehicle frame top, and the chair pillow is installed on the operating handle column.

6. electric stair climbing wheelchair according to claim 1; Its characteristic exists: described front-wheel comprises front-wheel, front-wheel wheel fork, damping arm and damping spring; The damping arm is hinged on front-wheel wheel fork bottom, and damping spring top is installed on the support at front-wheel wheel fork middle part, and this support is welded on rear, wheel fork middle part; The damping spring bottom is rack-mount, and this support is welded on damping arm rear portion.

7. electric stair climbing wheelchair according to claim 1; It is characterized in that: described accumulator cell assembly comprises accumulator, accumulator box, power supply lock, fuse, supply socket, plug, charging socket, battery indicator; Accumulator is loaded in the accumulator box, and accumulator box closes on the accumulator box base that pressing plate is fixed on the vehicle frame rear portion with scalable, and supply socket is installed in the accumulator box rear portion; Power supply lock and fuse are installed on the right backplate of seat; Charging socket is installed on the left backplate, and the battery indicator of nursing type is installed in the button box on the operating handle, and the battery indicator of self-driving type is installed in below the left handrail.

8. electric stair climbing wheelchair according to claim 1; It is characterized in that: described controlling organization comprises crawler travel control circuit, seat balance control circuit and trailing wheel up-down control circuit; The power output end of described three control circuits is connected with corresponding direct current generator respectively, wherein:

Described crawler travel control circuit comprises speed-regulating handle bar, falls along stopping button, DC motor controller, relay, socket and lead; DC motor controller, direct current transducer, relay and socket are installed in the distribution box; Distribution box is fixed on the distribution box support of vehicle frame upper end; The nursing type speed-regulating handle bar is installed on the operating handle along stopping button with falling, and the self-driving type is installed on the handrail;

Described seat balance control circuit comprises three SRs, relay, travel switch, stroke limit plate, socket and lead; The three-phase load button is installed in the button box, relay and socket are installed in the distribution box, and travel switch is installed on the travel switch support of seat balance reductor upper end, and left and right sides stroke limit plate is welded on respectively on the crank of the left and right sides;

Described trailing wheel up-down control circuit comprises three SRs, relay, travel switch, stroke limit plate, socket and lead; Three SRs are installed in the button box, and relay socket is installed in the distribution box, and travel switch is installed on the rear portion travel switch support of trailing wheel lifting decelerator, and the stroke limit plate is welded on the right connecting axle.