CN103287532A

CN103287532A - Front-drive, middle-steering and rear-swing tricycle

Info

Publication number: CN103287532A
Application number: CN2012100592240A
Authority: CN
Inventors: 李华宁
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-01
Filing date: 2012-03-01
Publication date: 2013-09-11

Abstract

A front-drive, middle-steering and rear-swing tricycle comprises a front wheel and two coaxial rear wheels, and is characterized in that with reciprocating forward pedaling, the driven rotation of the front wheel, the steering of a middle part and left-and-right swing of a rear part can be realized by the drawing of ropes; pedals move along a track back and forth to drive the expansion and contraction of a V-shaped movable foot lever; the V-shaped movable foot lever draws the ropes to drive the front wheel to rotate; a W-shaped direction handle is connected to a steering drive shaft arranged below a seat cushion; the longitudinal steering drive shaft and a vertical steering driven shaft are meshed through a sector gear; the upper front end of an reversed-L shaped swing level is connected to the upper part of the steering driven shaft; the lower end of the steering driven shaft is connected to the lower part of the reversed-L shaped swing level by a bottom chord; a U-shaped plate is sleeved with a real axle from top down; the lower end of the reversed-L shaped swing level branches at the front and at the rear to be clamped at the middle part of the U-shaped plate; symmetrically cross-tensioned springs are arranged on the two sides of the upper part of the reversed-L shaped swing level and the two end parts of the U-shaped plate; and a vehicle girder is used for connecting the front part and the rear part of the tricycle, and a seat is arranged above the vehicle girder.

Description

Put tricycle among the forerunner backward

Affiliated technical field

The present invention relates to traffic and transport field, is a kind of by a front-wheel and two tricycles that coaxial trailing wheel is formed.The feature of this tricycle is: scrunch back and forth forward, drive with cable traction that front-wheel, middle part turn to, tricycle can be put among the wiggly forerunner backward in the rear portion.

Background technology

The defective of the foot-operated tricycle of tradition is: 1, ride over for a long time and can make the driver feel uncomfortable on the narrow and small cushion.2, vehicle body is along with center of gravity (human body) is carried out counter centrifugel when quick steering, and therefore outside rear wheel built on stilts vehicle body center of gravity lack of equilibrium turns on one's side easily this moment.3, hind axle is axle drive shaft, and wheel shaft and wheel are for fixing whole, and off-side wheel equates with the rotating speed of nearside wheel when turning to, so direction is difficult to control and turns on one's side easily equally.4, driver's both legs are to do the circumference circulating motion, and the dynamics of circular movement does not have directly downwards or the great efforts that scrunch forward.5, driver's body erect air resistance is big.

Summary of the invention

For make the tricycle driver feel comfortably cool, safe, laborsaving, the invention provides a kind of driver of making and face upward and be sitting on the backed seat, both legs freely scrunch forward, treadle drives rope and drives front-wheel and rotate; The handle of steering handle is located at the both sides of cushion, and the driver is as direction of operating dish direction of operating handle; Vehicle body carries out counter centrifugel and tilts along with center of gravity (human body) when quick steering, and off-side wheel is therefore built on stilts not, and car body still keeps the stabilized conditions of three points of contact; Front-wheel and trailing wheel turn to simultaneously and the rotating speed of off-side wheel and nearside wheel can be regulated voluntarily round about when turning to; It is bigger and the human body air resistance is little that the driver sits the dynamics scrunch forward to layback; Utilize back of seat and outstanding headstock that hood is installed.

The present invention solves the technical scheme that its technical matters takes:

One, drive system: two overlapped independently cable traction transmission combination about drive system was divided into.Two parallel longitudinals, the low track girder in preceding high back about establishing above the front-wheel, it is foot-operated about track girder outside symmetry is established, the inboard symmetry of track girder is established the movable treadle of left and right sides V-arrangement, the upper end of the active treadle in foot-operated and the movable treadle of V-arrangement is connected by foot-operated roller shaft, and the upper end of the driven treadle in the V-arrangement activity treadle is suspended on below the track girder stage casing; About the centre of foot-operated roller shaft a roller respectively is installed, roller is pressed on the track girder, the groove surface of roller and the rounded convex of track girder match.Front wheel spindle left and right sides symmetry is established flywheel (overriding clutch), the flywheel outer ring is cylinder, establish plug helix in the cylinder, each fixes the fag end of a rope at the spiral fluted two ends, two ropes are twined with relative direction along plug helix, after joining in the middle of cylinder, two ropes just turning to rope (line direction before the wheel) by the back track adjusting wheel, the counter steer rope is by front jockey wheel, and two ropes extend on the fag end card on the active treadle in the movable treadle of the V that has shunk fixing with relative direction again; When foot-operated when driving roller and moving forward along track girder the movable treadle of V launch forward, just turning to rope to stretch out the traction flywheel in the flywheel cylinder is just changeing the driving front-wheel, the counter steer rope is regained in the cylinder this moment; The movable treadle of V is to after contraction and continue to launch backward when driving roller and moving backward along track girder when foot-operated, and the counter steer rope stretches out the counter-rotating of traction flywheel in the flywheel cylinder, just turning to rope to regain in the cylinder this moment.About foot-operated alternate reciprocating motion drive front-wheel and continue to rotate.The advantage of this drive system is: 1, ride along track girder front and back straight-line motion, treadle drives the cable traction flywheel and rotates, and the angle of foot-operated power direction and the power arm (radius) of flywheel is 90 ° that fix.2, the force method of pedaling before the driver swings back is the strongest force method below the human body waist.3, left and right sides pedal is stepped on mutually and is not pind down, and can alternately scrunch also to scrunch simultaneously, and it is random to scrunch stroke length.4, just turning to rope and counter steer rope to share same cylinder, the stretching of two ropes is carried out simultaneously with recovery.5, the termination of rope is fixed on the cylinder, so can not skid between rope and the cylinder.

Two, turn to, swing system: the postmedian that turn to, swing system is located at vehicle body, by W shape steering handle, steering drive axle, turn to driven axle, quadrant gear, fixedly steering drive axle and the ladder splint that turns to driven axle, be enclosed within U-shaped plate on the hind axle, rocking bar, down profound bar, about tiltedly draw composition such as spring.Vertically steering drive axle be located between cushion and the crossbeam and front end a little less than the rear end, the front end of steering drive axle is installed W shape steering handle, the handle of steering handle is in the cushion both sides and turn forward, and it is in order to avoid cushion and crossbeam when rotating up and down that steering handle is designed to W shape; Vertically turn to the upper end of driven axle to recede, the quadrant gear interlock is passed through with the upper end that turns to driven axle in the rear end of steering drive axle; Steering drive axle with turn to the outer tube left and right sides of driven axle to be fixed by two ladder splints; The cross-sectional plane of U-shaped plate is U, and the effect of U-shaped plate is the pressure at average rear wheel axle center, and the long narrow degree in wide two ends, the centre of U-shaped plate slightly is shorter than the wheel shaft between two trailing wheels, and the U-shaped plate turns around and is enclosed within from the top down on the hind axle; Rocking bar is 7 crooked fonts, and front end is connected with the top that turns to driven axle on the rocking bar, and the vertical bifurcated in rocking bar lower end is stuck in the middle part of U-shaped plate vertically downward and is connected with the U-shaped plate by vertical rotating shaft; The front end of lower boom is connected with the lower end that turns to driven axle, and the rear end of lower boom is connected with the bottom of rocking bar; About tiltedly draw the upper end of spring to be fixed on the left and right sides at rocking bar upper bend place, the lower end is fixed on the two ends, the left and right sides of U-shaped plate.This turns to, the advantage of swing system is: 1, driver's both hands handle of holding health both sides steering handle rotates up and down as the direction of operating dish.2, turning to driven axle is the vehicle body steering node, so front-wheel and trailing wheel turn to round about dwindled turn radius simultaneously.3, turning to driven axle is lower end upper end inclination axostylus axostyle backward forward, when turning to vehicle body can nature to the steering direction centnifugal force that tilts to contend with, also strengthen simultaneously the torsion of trailing wheel, when one-sided trailing wheel runs into obstacle, just can not change direction of traffic easily as long as the driver holds steady steering handle.4, the center of gravity because of body tail is positioned at the centre of hind axle and the rotating shaft of rocking bar, therefore therefore outside rear wheel can not leave the road surface when vehicle body carries out the counter centrifugel inclination along with human body, tiltedly draw the magnitude of inclination of the adjustable car load body of spring simultaneously, even Uneven road and left and right sides trailing wheel be not under the situation of same level height, vehicle body still can keep plumbness by the human body adjustment.

Three, crossbeam, seat, hood: crossbeam is the girder that connects front and back wheel and trailing wheel, the front portion of crossbeam is connected with track girder by Ping Lian and pin, the middle and lower part of crossbeam is connected by pin with the U-lag of front-wheel back vent upper end, and the afterbody of crossbeam inserts the centre joint of ladder splint and is linked to be integral body by pin and ladder splint; The crossbeam front portion is provided with several preformed holes, can regulate vehicle body length by these several preformed holes.Preceding single supporting leg of seat is fixed on the front end of crossbeam, the back double bracing leg of seat is the effect that arc can play damping, the upper end of two backs supporting leg is inserted and is located in the sleeve pipe of seat back, be provided with damping spring in the sleeve pipe, the sleeve pipe upper end is provided with screw regulator and can regulates the cushion height, and the lower end of two backs supporting leg is clipped in the both sides of ladder splint and is linked to be integral body by pin and ladder splint; Be connected by the hinge-type rotating shaft between the backrest of seat and the cushion, backrest can hold down forward on cushion; It is as a whole that seat is located at front portion and the front-wheel of steering node (turning to driven axle), so driver's dead ahead and front-wheel direction are synchronous.Movable hood is made up of sleeve, skeleton, Shears, stull, bracket of rear mounting, tarpaulin etc., respectively establish two behind at headstock and back of seat and be the herringbone sleeve, two sleeves that two skeletons of being made by hard and soft performance materials inserted headstock are crooked backward then, the skeleton afterbody joins with two bracket of rear mountings that insert back of seat behind sleeve respectively, laterally establish Shears on two skeletons between the place ahead, establish stull between the two skeleton rear portions, establish rnnning bar in the middle of two skeletons, tarpaulin is installed at the top.

Fig. 1 is the whole construction profile of the present invention, and trailing wheel partly is the middle part cutaway view.

Fig. 2 is the front enlarged drawing of I-I, and the active treadle 5-1 among the figure in the movable treadle of V-arrangement shrinks with driven treadle 5-2 and overlaps; 3A and 3B are the foot-operated of two kinds of models among the figure, and 3A is that dead front type is foot-operated, and 3B is type semienclosed foot-operated.

Fig. 3 is the side enlarged drawing of fag end card 22.

Fig. 4 is the front elevation of IV-IV, and W shape steering handle 9 is overlooked and is arc.

Fig. 5 is the front elevation of V-V, is the swing system at car rear portion.

Fig. 6 is the front enlarged drawing of II-II, expression front wheel spindle 1 left and right sides flywheel (overriding clutch) outer ring cylinder 32 and be wrapped in

drag rope

23,24, fag end attachment point 33 on the cylinder.

Fig. 7 is the lateral plan of III-III, and the fag end attachment point 33 of this figure is knots of beating.

Fig. 8 is the front elevation of VI-VI, is headstock.

1. fronts wheel spindle among Fig. 1,2. double rear wheel axle, 4. track girder, 5-1. the active treadle, the driven treadle of 5-2., 7. front-wheel front fork, 8. front-wheel back vent, 9. pull bar, the pull bar between front-wheel front fork and the front-wheel back vent, 10-1. seat cushion, 10-2. backrest, the rotating shaft of 10-3. hinge, 11. back double bracing leg sleeve pipe, in establish damping spring and screw regulator, double bracing leg behind 12. seats, 13. quadrant gear, the 14-1. steering drive axle, 14-2. turns to driven axle, 15.W the shape steering handle, 16. rocking bars, 17. lower booms, 18. the front jockey wheel of band spring, the back track adjusting wheel of 19. band screw regulators, 20. crossbeams, 21. single supporting leg before the seat, 23. counter steer ropes, 24. are just turning to rope, 25. parking brake, 26. ladder splint, 27. rocking bar rotating shafts, 35. skeleton sleeves, 36. skeleton, 37. back timber, 38. Shearves, 39. bracket of rear mounting sleeves, 40. bracket of rear mounting, 41. tarpaulins.The 3A. dead front type is foot-operated among Fig. 2, and the 3A-1. dead front type is stepped on handle, 3A-2.U shape link, effect is to tangle heel, the short foot-operated roller shaft of 3A-3, and 3B. is type semienclosed foot-operated, 3B-1. the type semienclosed handle of stepping on, 3B-2.J shape hook, effect is to hook heel, 3B-3. long foot-operated roller shaft, 6. roller, 22-1. is treadle counter steer rope fag end card initiatively, 22-2. initiatively treadle is just turning to rope fag end card, 28. horizontal flat company (connecting crossbeam and track girder), in establish pin, 29. headstock cross bars among Fig. 8.30. tiltedly draw spring among Fig. 5,31.U shape plate.32. cylinders among Fig. 6,7,33. fag end attachment points, 34. flower-drum.

The specific embodiment

Be that the strong point is established front-wheel front fork 7 and front-wheel back vent 8 respectively with front wheel spindle 1; Two parallel longitudinals, middle part arch camber, low, the reclinate track girder 4 of front end and rear end in preceding high back about establishing above the front-wheel, the front end of the front end cross bar supporting track beam 4 of front-wheel front fork 7 is at the front jockey wheel 18 of point of connection place left-right symmetric mounting strap spring; Track girder 4 is connected the back track adjusting wheel 19 of track girder 4 tail end left-right symmetric mounting strap screw regulators at the rear portion crooked position by the horizontal company of putting down 28 and pin with crossbeam 20; For increasing the holding capacity of track girder 4, establish pull bar 9 in the bottom of front-wheel front fork 7 and front-wheel back vent 8.It is foot-operated about track girder 4 outside symmetries are established, the foot-operated foot-operated 3A of dead front type and two kinds of models of type semienclosed foot-operated 3B of being divided into, the foot-operated 3A of dead front type by enclosed shape step on handle 3A-1, U-shaped link 3A-2, short foot-operated roller shaft 3A-3 forms, type semienclosed foot-operated 3B by semiclosed shape type step on handle 3B-1, J-shaped hook 3B-2, the long roller shaft 3B-3 of riding form; Short foot-operated roller shaft 3A-3 and U-shaped link 3A-2 are rotationally connected, and the effect of U-shaped link 3A-2 is to tangle heel, and the upper end of U-shaped link 3A-2 is stuck in the two ends that dead front type is stepped on handle 3A-1; Long foot-operated roller shaft 3B-3 and J-shaped hook 3B-2 are rotationally connected, and the effect of J-shaped hook 3B-2 is to hook heel, longly ride roller shaft 3B-3 and semiclosed shape type to step on handle 3B-1 coaxial; Track girder 4 inboard symmetries are established the movable treadle of left and right sides V-arrangement, the movable treadle of V-arrangement is connected to form by rotating shaft by active treadle 5-1 and driven treadle 5-2, extensible contraction launches V-shaped, the upper end of driven treadle 5-2 in the movable treadle of V-arrangement is suspended in the rotating shaft of below, track girder 4 stage casings, and the upper end of the active treadle 5-1 in the movable treadle of V-arrangement is connected by foot-operated roller shaft 3A-3 or 3B-3 with the foot-operated 3A in track girder 4 outsides or 3B; About a roller 6 respectively is installed in the middle of foot-operated roller shaft 3A-3 or the 3B-3, roller 6 is pressed on the track girder 4, the rounded convex of the groove surface of roller 6 and track girder 4 matches; When closing up with driven treadle 5-2 contraction, the active treadle 5-1 in the movable treadle of V-arrangement between roller 6 and the track girder 4 slit should be arranged.Establish flywheel (overriding clutch) in front wheel spindle 1 left and right sides symmetry, the flywheel outer ring is cylinder 32, establish plug helix in the cylinder 32, each fixes the fag end of a rope at the fag end attachment point 33 at plug helix two ends, two ropes are twined with relative direction along plug helix, when two ropes just turn to (direction that wheel moves ahead) rope 24 by the back track adjusting wheel 19 of band screw regulator after joining in the middle of the cylinder 32, counter steer rope 23 18, two ropes of front jockey wheel by the band spring extend to fag end card 22-1 on the active treadle 5-1 in the movable treadle of the V-arrangement that has shunk with relative direction again, 22-2 fixes.Steering drive axle 14-1 is that front and back are vertical, be located between cushion 10-1 and the crossbeam 20 and front end a little less than the rear end, the front end of steering drive axle 14-1 is installed W shape steering handle 9, and it is W shape that W shape steering handle 9 is faced, and it is that arc so handle turn forward that W shape steering handle 9 is overlooked; Turning to driven axle 14-2 is that vertical vertical rod and lower end turn forward, and the rear end of steering drive axle 14-1 and the upper end that turns to driven axle 14-2 be by quadrant gear 13 interlocks, steering drive axle 14-1 and turn to angle between the driven axle 14-2 less than 90 °; The outer tube of steering drive axle 14-1 and the outer tube left and right sides that turns to driven axle 14-2 are by two ladder splints, 26 phase clamping connections; The cross-sectional plane of U-shaped plate 31 is U-shaped, and the long narrow degree in wide two ends is slightly less than the wheel shaft between two trailing wheels in the middle of the U-shaped plate 31, U-shaped plate 31 is turned around be enclosed within from top to bottom on the hind axle 2; Rocking bar 16 is 7 crooked fonts, and front end is connected with the top that turns to driven axle 14-2 on the rocking bar 16, and the vertical bifurcated in rocking bar 16 lower ends is stuck in the middle part of U-shaped plate 31 vertically downward and is rotationally connected by oscillation in the pitch mode bar rotating shaft 27 and U-shaped plate 31; The front end of lower boom 17 is connected with the lower end that turns to driven axle 14-2, and the rear end of lower boom 17 is connected with the bottom of rocking bar 16; About tiltedly draw the upper end of spring to be fixed on the left and right sides at rocking bar 16 upper bend places, about tiltedly draw the lower end of spring to be fixed on the two ends, the left and right sides of U-shaped plate 31.The cross-sectional plane of crossbeam 20 is oblong, low after high before the crossbeam 20 is the girder that connects body forward structure and rear portion, the front portion of crossbeam 20 is by laterally the company of putting down 28 and pin are connected with track girder 4, the middle and lower part of crossbeam 20 is connected by pin with the U-lag of front-wheel back vent 8 upper ends, and the afterbody of crossbeam 20 inserts the centre joint of ladder splint 26 and is linked to be integral body by pin and ladder splint 26; Crossbeam 20 front portions are provided with several preformed holes, can regulate vehicle body length by these several preformed holes.Preceding single supporting leg 21 of seat is fixed on the front end of crossbeam 20, the back double bracing leg 12 of seat is arc, insert in the sleeve pipe 11 that is located at after the seat back upper end of the back double bracing leg 12 of seat, be provided with damping spring in the sleeve pipe 11, sleeve pipe upper end is provided with screw regulator and can regulates the cushion height, and the both sides that the lower end of double bracing leg 12 is clipped in ladder splint 26 behind the seat are linked to be integral body by pin and ladder splint 26; Be connected by hinge rotating shaft 10-3 between the backrest 10-2 of seat and the cushion 10-1, backrest 10-2 holds down forward on cushion 10-1; Respectively establish two in the behind of headstock and back of seat 10-2 and be herringbone sleeve 35,39, two sleeves 35 that two hood skeletons of being made by hard and soft performance materials 36 inserted headstock are crooked backward then, the skeleton afterbody joins with two bracket of rear mountings 40 that insert back of seat 10-2 bracing frame sleeve 39 behind respectively, article two, establish horizontal Shears 38 on the skeleton 36 between the place ahead, stull is established at the rear portion, rnnning bar 37 is established in the centre, and tarpaulin 41 is installed at the top.

Claims

1. one kind scrunches back and forth forward, drives with cable traction that front-wheel rotates, the middle part turns to, tricycle can be put among the wiggly forerunner backward in the rear portion, it is characterized in that: foot-operated seesawing along track drives the movable treadle stretching, extension of V-arrangement contraction, and the movable treadle drag rope of V-arrangement drives front-wheel and rotates; W shape steering handle is connected with the steering drive axle that is located at the cushion below, vertically steering drive axle is connected by quadrant gear with vertically turning to driven axle, turn to the top of driven axle to connect the last front end of 7 font rocking bars, turn to the lower end of driven axle to be connected by lower boom with the bottom of 7 font rocking bars, the U-shaped plate is enclosed within on the hind axle from the top down, bifurcated is stuck in the middle part of U-shaped plate and vertically downward by vertical rotating shaft connection before and after the lower end of 7 font rocking bars, establishes symmetry at the two ends of the left and right sides, top of 7 font rocking bars and U-shaped plate and tiltedly draws spring; Article one, crossbeam connects front portion and the rear portion of vehicle body, the chair of choosing a place to give a banquet above the crossbeam, and seat has backrest, utilizes outstanding headstock and back of seat that hood is installed.

2. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: be that the strong point is established front-wheel front fork and front-wheel back vent respectively with the front wheel spindle; The track girder of two parallel longitudinals about establishing above the front-wheel, the front end of the front end supporting track beam of front-wheel front fork is installed track adjusting wheel in front end and the rear end left-right symmetric of track girder; The track girder rear portion is connected with the front portion of crossbeam; It is foot-operated about track girder outside symmetry is established, the inboard symmetry of track girder is established the movable treadle of left and right sides V-arrangement, active treadle in the movable treadle of V-arrangement is connected by rotating shaft with driven treadle, the upper end of the driven treadle in the movable treadle of V-arrangement is suspended in the rotating shaft of below, track girder stage casing, and the upper end of the active treadle in the movable treadle of V-arrangement is connected by foot-operated roller shaft with the track girder outside is foot-operated; About a roller respectively is installed in the middle of the foot-operated roller shaft, roller is pressed on the track girder.

3. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: establish flywheel (overriding clutch) in front wheel spindle left and right sides symmetry, the flywheel outer ring is cylinder, establish plug helix in the cylinder, each fixes the fag end of a rope at the plug helix two ends, two ropes are twined with relative direction along plug helix, when two ropes just turn to (direction that wheel moves ahead) rope by the back track adjusting wheel after joining in the middle of the cylinder, the counter steer rope is by front jockey wheel, and two ropes are fixed fag end with the same position that relative direction extends on the active treadle in the movable treadle of the V-arrangement that has shunk again.

4. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: vertically steering drive axle is located between cushion and the crossbeam, the front end of steering drive axle is installed W shape steering handle, and vertically the quadrant gear interlock is passed through with the upper end that vertically turns to driven axle in the steering drive axle rear end; The outer tube of steering drive axle with turn to the outer tube left and right sides of driven axle to be folded by two ladder splints.

5.U the cross-sectional plane of shape plate is U-shaped, wide two ends are narrow in the middle of the U-shaped plate, and length is slightly less than two trailing wheel spacings, and the U-shaped plate turns around and is enclosed within from top to bottom on the hind axle; Rocking bar is 7 crooked fonts, and last front end is connected with the top that turns to driven axle, and the vertical bifurcated in lower end is stuck in the middle part of U-shaped plate vertically downward and is rotationally connected by vertical rotating shaft and U-shaped plate; Turn to the lower end of driven axle to be connected by lower boom with the bottom of rocking bar; The left and right sides at 7 font rocking bar upper bend places and the two ends, the left and right sides of U-shaped plate are established symmetry and are tiltedly drawn spring.

6. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: the middle and lower part of the upper end supported cart crossbeam of front-wheel back vent, the afterbody of crossbeam are inserted the centre joint of ladder splint and are linked to be integral body by pin and ladder splint.

7. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: preceding single supporting leg of seat is fixed on the front end of crossbeam, the back double bracing leg of seat is arc, and the sleeve pipe that is located at seat back is inserted in the upper end, is provided with damping spring and screw regulator in the sleeve pipe; The lower end of the back double bracing leg of seat is clipped in the ladder splint left and right sides and is linked to be integral body by pin and ladder splint, is connected by the hinge rotating shaft between the backrest of seat and the cushion.

8. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: respectively establish two in the behind of headstock and back of seat and be the herringbone sleeve, two sleeves that two hood skeletons of being made by hard and soft performance materials inserted headstock are crooked backward then, article two, the afterbody of hood skeleton joins with two bracket of rear mountings that insert back of seat behind sleeve respectively, and tarpaulin is installed at the skeleton top.

9. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: dead front type is foot-operated steps on handle, U-shaped link, short foot-operated roller shaft by dead front type and forms, short foot-operated roller shaft and U-shaped link are rotationally connected, and the upper end of U-shaped link is stuck in the two ends that dead front type is stepped on handle.

10. according to putting tricycle backward among the described forerunner of claim 1, it is characterized in that: type semienclosed foot-operated formed by the type semienclosed handle, J-shaped hook, long foot-operated roller shaft stepped on, long foot-operated roller shaft is rotationally connected with the J-shaped hook, longly rides roller shaft and type semienclosed to step on handle coaxial.