CN101700800B - Folding carriage of two-wheel vehicle - Google Patents

Abstract

The invention relates to the field of carriages of two-wheel vehicles, in particular to a carriage of a two-wheel vehicle, which can be folded three times. The carriage comprises a front fork, a front beam pipe, a steering bar, a front folding beam pipe, a middle beam pipe, a rear beam pipe and a rear fork, wherein the front fork and the steering bar are connected to the upper end and the lower end of the front beam pipe, the front end of the front folding beam pipe and the rear end of the front beam pipe are connected and locked by a first manual elasticizing device, the rear end of the front folding beam pipe and the middle beam pipe are connected by a second manual elasticizing device, the middle beam pipe is articulated with the rear beam pipe which can form longitudinal folding relative to the middle beam pipe, the rear beam pipe is connected to the rear fork by a second manual elasticizing device, and the steering bar comprises a steering lower bar and a steering upper bar which is movably connected with the steering lower bar. After being matched with wheels or mechanisms, a portable folding vehicle which can be ridden after folding once, drawn away after folding twice and put in a portable bag on the shoulder or in one hand after folding three times is achieved.

Description

The folding stand of sulky vehicle

Technical field

The present invention relates to the vehicle frame field of sulky vehicle, particularly a kind of sulky vehicle can three folding vehicle frames.

Background technology

Sulky vehicle of today such as bicycle and battery-driven car develop towards miniaturization and folding direction, various mini foldable battery-driven cars become the main flow in market gradually, alleviate and the foldability of the weight of bicycle made things convenient for people's use undoubtedly greatly and deposited, and also prevented the stolen of vehicle and lost.According to a kind of three collapsible foot-operated, electric dual-purpose bicycles shown in the patent No. 200520130362.9, it can vertical three folding gatherings in be " W " shape for a kind of vehicle body, keeps front and rear wheel to land simultaneously, foot-operated, Electrical Bicycle easy to carry.Also there is following deficiency in this invention: after 1, folding, just can only be as articles accompanied, must push-and-pull away, and do not had the function of bicycle, 2, after folding, the lateral length of this car reduces greatly, but its longitudinal length does not obtain reducing of essence, so its volume is still very big, portability has certain weakening.

Summary of the invention

The invention provides a kind of vehicle frame that can fold three times sulky vehicle, behind assembling wheels and actuating device on this vehicle frame, still can ride after carrying out folding the first time, after folding for the second time, can walk in tow with trailer is the same, after folding for the third time, continue reduced volume and can pack in the hand baggage, shoulder is carried on the arm or hand is being carried.

Purpose of the present invention is achieved through the following technical solutions:

A kind of folding stand of sulky vehicle, comprise front fork, the front-axle beam pipe, deflecting bar and back vent and seat support link, folding beam pipe before also including, intermediate beam pipe and back rest pipe, the front end of preceding folding beam pipe is connected with the front-axle beam pipe by the first manual take-up, preceding folding beam pipe rear end is connected by the second manual take-up with the intermediate beam pipe, the intermediate beam pipe is hinged with one can form longitudinal folding back rest pipe with respect to this intermediate beam pipe, intermediate beam pipe and back rest pipe are by horizontal latching device locking, back rest pipe is connected on the back vent by the 3rd manual take-up, deflecting bar comprises and turns to upper boom and turn to the lower beam that turns to that upper boom flexibly connects with this, turns to upper boom and turns to lower beam to lock by catch gear.

After having adopted such scheme, vehicle frame of the present invention can take place three times and fold, and for the ease of advantage of the present invention is set forth, behind assembling wheels, actuating device and seat cushion on the vehicle frame, carries out the corresponding folding operation and describes.Wherein folding for the first time is after unclamping first, second, third manual take-up, back vent left-hand revolution 90 degree, the dextrorotation of preceding folding beam pipe are turn 90 degrees, and suitably rotate the front-axle beam pipe, lock each manual take-up then, open standby stretcher, finish folding for the first time.After rotating aforementioned three beam pipes, the intermediate beam pipe is relative with back rest pipe upwards not to be subjected to displacement before the rotation, folding back vehicle commander foreshortens to 62 centimeters by 125 centimeters, though its volume-diminished, but it still constitutes the form of a conventional sulky vehicle, can continue to ride, the sulky vehicle of this volume-diminished has very high agile property, is adapted at that metropolitan subway changes line, ride in crowded street, mass market and the inside, Urban Parks.For the second time folding is on the basis after folding for the first time, the junction of intermediate beam pipe end wise around intermediate beam pipe and back rest pipe is rotated, folding back vehicle front-wheel and trailing wheel are side by side, the vehicle commander foreshortens to 30 centimeters by 62 centimeters that fold for the first time, its volume is further dwindled, because its deflecting bar does not change, deflecting bar can be used as pull bar and use, therefore, the occasion that why not is fit to ride in office can haul away.Folding for the third time is folding deflecting bar, the whole car body in folding back is long-pending to have only 50 centimeters * 30 centimeters * 12 centimeters, can put in the convenient bag that carries with car, shoulder is carried on the arm or hand is carried and carried, and car can be brought into any places such as automobile, subway, train, aircraft, office and classroom, actv. prevents that vehicle is stolen.Adopt the wheel of 12 inch to assemble on the vehicle frame of the present invention, behind the wheel of this size of fit on, not only can not influence the speed that it is ridden, and through after folding for the first time, the speed of riding can reach 25 kilometers/hour, because in the many public places of ground iron man, for purpose of safety, speed-limit device is set on vehicle frame, make its speed of riding be up to 10 kilometers/hour, therefore, fold the first time can't influence the speed of riding later.The size of its wheel of folding for the second time back is big, and is also relatively lighter when hauling away.Through three times folding, can draw car load and launch fully to reach 7.1: 1 with folding fully volume ratio, give the sufficient convenient advantage of having brought of carrying after its volume-diminished.In addition, can also be on vehicle frame the power lead and the integrated information liquid crystal display dish of built-in efficient quick charger and band interface, and can be the user and dispose lighting installation, folding glove frame, the special-purpose frame of Foldable fravelling case, 10 kilometers annexes such as external power supply.

The described first manual take-up comprises front end cover, rear side housing and the adapter shaft that can rotate, front end cover is positioned at a side of front-axle beam pipe, rear side housing is positioned at the opposite side of front-axle beam pipe and circumferentially is fixed on the front-axle beam pipe, hole before one end of adapter shaft passes successively on folding beam pipe and the front-axle beam pipe is threaded with rear side housing, and folding beam pipe was captiveed joint with front end cover with the hole on the front-axle beam pipe before the other end of adapter shaft passed successively.Front end cover here and rear side housing clamp both by the rotation of adapter shaft, thereby have realized the locking to front-axle beam pipe and preceding folding beam pipe.

The screw thread that described adapter shaft connects rear side housing is first screw thread, also is provided with on the adapter shaft to connect front end cover bonded assembly second screw thread, and the rotation direction of first screw thread and second screw thread is opposite.The rotation direction of screw thread is opposite, and promptly the rotary connection axle can screw simultaneously or unclamp forward and backward end cap, has accelerated the speed of regulating, and has realized that the less power that screws reaches bigger coupling mechanism force, also makes the both sides of front-axle beam pipe stressed evenly.

The described first manual take-up also comprises and adapter shaft bonded assembly rotation hand wheel, this rotation hand wheel comprises the handwheel dish, the axial end of handwheel dish be provided with cylinder and with the circumferential bonded assembly axle sleeve of adapter shaft, cylinder ring is around axle sleeve, the axial end of described rear side housing is provided with the cylindrical shell that the described cylinder of confession inserts, and this circumferentially is positioned in the cylindrical shell with respect to the cylinder that cylindrical shell can form axial motion.Here the rotation hand wheel of setting up makes things convenient for the application of force of user when regulating.

Between on the side face of the cylinder of described rotation hand wheel or be provided with groove with the cylinder axially parallel, the side wall surface of the cylindrical shell of described rear side housing is provided with retractor device, this retractor device comprises and is connected in the elastomeric element in the hole on the cylinder lateral wall face, and being inserted into projection in the drum surface groove, elastomeric element is connected with projection.Here by the self-locking that has realized rotation hand wheel that cooperates on the cylinder of projection and rotation hand wheel, prevent the rotation that it causes owing to vibration in the process of riding.

Be equipped with convex closure on the axial end of described front end cover and rear side housing, the two sides of described front-axle beam pipe are provided with the pit that inserts for convex closure.By cooperating of convex closure and pit, prevented the circumferential rotation of forward and backward end cap.

Also comprise and being arranged on the back rest pipe by expansion link bonded assembly cushion, the bottom of cushion is provided with swivel mount and fixed base plate, one end of fixed base plate is provided with two link slots, one end of swivel mount is provided with two contiguous blocks, contiguous block snaps in the link slot and connects by connecting pin, one of them contiguous block opening, another contiguous block is provided with swivel block, fixed floor is connected with telescopic pipe, here designed one can the secondary rotary folding cushion, repeatedly folding being mainly used in reduced the volume of vehicle after folding.

Also comprise the car support that is arranged on the back vent, the car support comprises the support base that is connected on the back vent, the bilateral symmetry of support base is provided with the spike supporting disk, the two ends of a rotating shaft are passed behind the through hole on the spike supporting disk hinged with spike, the axial end of each spike supporting disk is provided with projection, the distance of the starting point of this projection and spike supporting disk axial end is less than the distance of the terminal point and the spike supporting disk axial end of projection, be provided with lug boss between the Origin And Destination of projection, the destination county of projection is provided with along the axially extended block of spike supporting disk, and described spike is provided with the spike collecting device.When the car support was opened, the projection that the spike supporting disk is provided with opened spike to be " eight " word shape, and when packing up, the spike collecting device is drawn close two spikes, had reduced like this to draw the shared space of back pole-bracket in, and had improved performance attractive in appearance.

Described catch gear comprises and keeps frame, spanner and locking fixture block, spanner and locking fixture block all by dowel fixes in keeping on the frame, an end of locking fixture block is with the spanner clamping, other end transfer engages to lower beam.Unclamp this catch gear, fold and turn to upper boom, can further dwindle the volume after car folds.

The both sides of described back vent are provided with and have foot-operated groove, are provided be connected through the hinge standby foot-operated in the standby foot-operated groove, and after this was convenient to fold for the first time, pin laid when the user rode.

Except that above-mentioned described, vehicle frame of the present invention adopts lightweight, high-strength aluminium-magnesium alloy precision casting, customized lithium ion battery can be placed the chassis frame pipe of hollow.

In sum, such scheme has been realized a kind of vehicle frame that can three folding two-wheel vehicles, foldingly still can ride after once, after folding for the second time, can walk in tow, after folding for the third time with trailer is the same, continue reduced volume and can pack in the hand baggage, shoulder is carried on the arm or hand is being carried.In addition, after vehicle frame of the present invention is installed wheel etc. and must parts be formed vehicle, folding back vehicle volume has only 1/8th of vehicle volume when launching, and the vehicle frame of the light later-model sulky vehicle of energy automatic speed-limiting after folding, after this vehicle frame is formed car load, can as working bus family is arranged, attend a day school in the school students in middle and primary schools, clan owning cars parking position to the destination, the student enrollment goes to school and leaves school or remove the walking-replacing tool of supermarket shopping.

Description of drawings

Fig. 1 assembles scheme drawing for embodiment;

Fig. 2 is the first manual take-up scheme drawing;

Fig. 3 is the front end cover scheme drawing;

Fig. 4 is the rear side housing scheme drawing;

Fig. 5 is the adapter shaft scheme drawing;

Fig. 6 is the rotation hand wheel scheme drawing;

Fig. 7 is the cushion scheme drawing;

Fig. 8 is a car support scheme drawing;

Fig. 9 is a front-axle beam pipe scheme drawing;

Figure 10 is the scheme drawing of intermediate beam pipe;

Figure 11 is the scheme drawing of back rest pipe;

Figure 12 is the scheme drawing of catch gear

Figure 13 is not folding scheme drawing:

Figure 14 is folding scheme drawing;

Figure 15 is folding secondary scheme drawing;

Figure 16 is folding three scheme drawings;

Figure 17 is the schematic perspective view of folding secondary;

Figure 18 is folding three times a schematic perspective view;

1 is front fork among the figure, and 2 is the front-axle beam pipe, and 3 is preceding folding beam pipe, 4 is the intermediate beam pipe, and 5 is back rest pipe, and 6 is back vent, 7 is deflecting bar, and 71 for turning to upper boom, and 72 for turning to lower beam, 73 is catch gear, and 731 for keeping frame, and 732 is spanner, 733 are the locking fixture block, and 8 is handlebar, and 9 is the car support, 91 is the support base, and 92 is the spike supporting disk, and 93 is projection, 94 is block, and 95 are rotating shaft, and 96 is spike, 97 is the spike collecting device, and 10 is stretcher, and 11 is cushion, 110 is the cushions support bar, and 111 is swivel mount, and 112 is fixed base plate, 113 is link slot, and 114 is contiguous block, and 115 is swivel block, 12 is the first manual take-up, and 13 is the second manual take-up, and 14 is the 3rd manual take-up, 15 is front end cover, and 151 is the polygon cylindrical shell, and 152 is the front end shrouding disc, 154 is stay bearing plate, and 155 for connecting cylinder, and 16 is rear side housing, 161 is cylindrical shell, and 162 is the rear end shrouding disc, and 164 is adapter plate, 165 is screw, 166 is nut, and 167 is areole, and 168 is latch segment, 17 is adapter shaft, 171 is first screw thread, and 172 is second screw thread, and 173 is the shaft shoulder, 18 is rotation hand wheel, 181 handwheel disk covers, 182 is the handwheel dish, 183 is cylinder, 184 is groove, 185 is polygonal hole, and 186 is axle sleeve, 187 handwheel webs, 19 is pit, 20 is standby stretcher, and 21 is convex closure, and 22 is locking piece.

The specific embodiment

Vehicle frame with battery-driven car is that example describes, and before describing, installs corresponding front vehicle wheel and rear wheel on vehicle frame of the present invention, and wherein, rear wheel is the rear wheel that has drive motor, and is provided with lithium cell in the car beam pipe of vehicle frame.The present invention will be described below in conjunction with accompanying drawing.

Illustrate along the paper direction to be called laterally herein, be called vertically perpendicular to the direction of paper, and the structure of first manual locking device, second manual locking device and the 3rd manual locking device is identical.

Extremely shown in Figure 12 as Fig. 1, the present invention includes front-axle beam pipe 2, the front end of front-axle beam pipe 2 is set with sleeve, front fork 1 is the linear pattern front fork, its top is provided with a step connection pipe, be set with bearing on the step of connection pipe respectively, and be connected in the lower end of front-axle beam pipe 2 sleeves, the body of deflecting bar 7 lower ends is provided with step equally, also be provided with bearing on each step respectively, deflecting bar 7 is connected in the upper end of front-axle beam pipe 2 sleeves, deflecting bar 7 and ground-surface angle are between 80 °～100 °, deflecting bar 7 comprises and turns to upper boom 71 and turn to lower beam 72, turn to upper boom 71 and turn between the lower beam 72 and be connected through the hinge, and lock by catch gear 73, described catch gear 73 comprises maintenance frame 731, spanner 732 and locking fixture block 733, keeping frame 731 to be fixedly connected on turns on the upper boom 71, spanner 732 and locking fixture block 733 all by dowel fixes in keeping on the frame 731, one end of locking fixture block 733 is with spanner 732 clampings, other end transfer is to lower beam 72 engagings, reach the effect of locking, when wanting release, only need pull spanner 732, can make locking fixture block 733 and turn to lower beam 72 to unclamp, turn to and be set with U type pipe link on the upper boom 71, handlebar 8 is movably connected on the U type pipe link, and can relatively rotate, connect by flexible axle between deflecting bar 7 and the front fork 1, realize turning to function.The both sides of the beam pipe of the rear end of preceding folding beam pipe 3 front ends and front-axle beam pipe 2 are equipped with the octagon hole, roll on the beam pipe 3 before front-axle beam pipe 2 is enclosed within, and Kong Yukong alignment, lock with spacing by the first manual take-up, the described first manual take-up comprises front end cover 15, rear side housing 16, adapter shaft 17 and rotation hand wheel 18, here the octagon hole before adapter shaft 17 passes on folding beam pipe 3 and the front-axle beam pipe 2, front end cover 15 and rear side housing 16 are connected to the two ends of adapter shaft 17 and press the both sides that are attached to front-axle beam pipe 2, be connected in the same side that rotation hand wheel 18 on the adapter shaft 17 and rear side housing 16 are positioned at front-axle beam pipe 2, drive adapter shaft 17 by rotation rotation hand wheel 18, before making, rear side housing moves axially, and realizes the clamping of front-axle beam pipe 2 and preceding folding beam pipe 3 and unclamps.Below the structure of first-hand moving take-up is described in detail: the middle part of the axle body of adapter shaft 17 is provided with first screw thread 171, the one end is provided with second screw thread 172, and the rotation direction of first screw thread 171 and second screw thread 172 is opposite, between first screw thread and second screw thread, also be provided with a pair of shaft shoulder 173, it is that the axially movable distance of forward and backward end cap is limited that the shaft shoulder 173 is set, the excessive beam pipe that causes of forward and backward end cap gripping power is out of shape when preventing to clamp, the side face of the other end of adapter shaft 17 is octagon, is used for cooperating with the axle sleeve 186 of rotation hand wheel 18.Front end cover 15 has an octagonal polygon cylindrical shell 151, one end of polygon cylindrical shell 151 is provided with front end shrouding disc 152, the surface of one side of front end shrouding disc 152 is provided with some convex closures 21, be provided with a stay bearing plate 154 in the polygon cylindrical shell 151 of one side of front end shrouding disc 152, the center of stay bearing plate 154 is provided with one and connects cylinder 155, its inwall is provided with screw thread, the screw thread that connects cylinder 155 follows second screw thread 172 of adapter shaft 17 to screw, rear side housing 16 also is octagonal cylindrical shell 161, the one end is provided with rear end shrouding disc 162, the surface of one side of rear end shrouding disc 162 is provided with some convex closures 21, cylindrical shell internal fixation at the other end of cylindrical shell 161 is provided with adapter plate 164, the center of reaction plate 164 has a through hole, also be provided with in the cylindrical shell 161 with screw 165 and be fixed in nut 166 on the adapter plate 164, nut 166 screws with first screw thread 171 on the adapter shaft 17, the sidewall of polygon cylindrical shell 161 also is symmetrically arranged with areole 167, be provided with latch segment 168 in the areole 167, latch segment 168 provides thrust by spring, rotation hand wheel comprises handwheel disk cover 181 and handwheel body, the handwheel body comprises that a lateral edges of handwheel dish 182 stretches out and is provided with handwheel web 187, its opposite side is provided with cylinder 183, the lateral wall of cylinder 183 is provided with some grooves 184, the center of handwheel dish 181 is provided with polygonal hole 185, be provided with axle sleeve 186 along bore edges to the extension of cylinder 183 1 sides, axle sleeve 186 connects with the end that side face is polygonal adapter shaft 17, handwheel disk cover 181 is connected with handwheel web 187 on the handwheel dish 182, and handwheel disk cover 181 is the plum blossom shape, is convenient to holding with a firm grip and rotating of user.Rotation hand wheel 18 can move axially with respect to adapter shaft 17, the groove 184 that rotation hand wheel 18 is provided with cooperates with the latch segment 168 that rear side housing 16 is provided with, when needing to fold, outwards pull out rotation hand wheel 18, rotation hand wheel 18 and latch segment 168 thrown off, and rotation rotation hand wheel 18 unclamps front end cover 15 and rear side housing 16 or locks, this is because the rotation direction of first screw thread 171 on the adapter shaft 17 and second screw thread 172 is opposite, has meanwhile also realized quick adjustment.Behind folding the finishing, rotation rotation hand wheel 18, make front end cover 15 and rear side housing 16 lockings, preceding folding beam pipe and front-axle beam pipe are fixed, then rotation hand wheel 18 is pushed, the groove 184 and the latch segment 168 of its drum surface are locked, prevent that the vibration in the process of riding from causing manual take-up loosening, the beam tube-surface on every side in the hole of front-axle beam pipe 2 also is provided with pit 19 simultaneously, the convex closure 21 that convex closure 21 that is provided with the front end shrouding disc and rear end shrouding disc are provided with cooperates, play certain locking effect, prevent the circumferential rotation of front end cover and rear side housing.

The other end of preceding folding beam pipe 3 connects by the second manual take-up 14 with intermediate beam pipe 4 front ends and locks, the both sides of intermediate beam pipe 4 are provided with a pair of stretcher 10, the both sides of car beam pipe 4 in the middle of stretcher 10 is hinged through the hinge to, and realize opening of stretcher and draw in by elastic locking device, be connected through the hinge between intermediate beam pipe 4 and the back rest pipe 5, and by horizontal latching device locking, can realize longitudinal folding between intermediate beam pipe 4 and the back rest pipe 5, the middle part of back rest pipe 5 is provided with by cushions support bar 110 bonded assembly cushions 11, the bottom of cushion 11 is provided with swivel mount 111 and fixed base plate 112, one end of fixed base plate 112 is provided with two link slots 114, one end of swivel mount 111 is provided with two contiguous blocks 114, contiguous block 114 snaps in the link slot 113 and connects by connecting pin, here realized the C.C.W. rotation of swivel mount 111 with respect to adapter plate 112, one of them contiguous block 114 is provided with opening, another contiguous block is provided with swivel block 115, because a contiguous block is provided with opening, so this contiguous block 114 and link slot 113 can be thrown off, simultaneously because another contiguous block is provided with swivel block 115, the structure has here realized the rotation longitudinally of cushion, locks by locking piece 22 between swivel mount 111 and the adapter plate 112.Connect locking by the 3rd manual take-up between back vent 6 and the back rest pipe 5.Also be provided with car support 9 on the back vent 6, car support 9 is fixed on the back vent 6 by support base 91, the bilateral symmetry of support base 91 is provided with spike supporting disk 92, the edge of spike supporting disk 92 stretches out and is provided with projection 93, the distance of the starting point of this projection and spike supporting disk axial end is less than the distance of the terminal point and the spike supporting disk axial end of projection, be provided with lug boss between the Origin And Destination of projection, one end of projection is provided with block 94, the two ends of rotating shaft are connected with spike 96 after passing through hole on the spike supporting disk 92, also be provided with a spike collecting device 97 between two spikes 96, when spike is opened, spike 96 is positioned at the destination county of projection, and it is fixed by block 94, spike collecting device 97 tensionings this moment, the spike application of force has been prevented that it is loosening, and lose supporting capacity, when spike is packed up in the process, 97 pairs two spike application of forces of spike collecting device, make its automatic gathering, after the gathering, spike 96 is positioned at the starting point place of projection, and two spikes 96 are parallel, dwindle spike like this and drawn the back occupation space in, improved aesthetic property simultaneously.The rearward end of described back vent also is provided with standby groove, and the standby stretcher that has been connected through the hinge in the standby groove, vehicle are opened standby stretcher after finishing and folding for the first time when riding, place for the user.

Method for folding:

Not folded state as shown in figure 13, the high energy of the riding speed of this moment reaches 25 kilometers/hour,

Folding for the first time: as to unclamp the first manual take-up, the second manual take-up and the 3rd manual take-up, front-axle beam pipe, preceding folding beam pipe and back rest pipe are all carried out horizontal folding, and the height of adjusting cushions support bar, open standby stretcher to state shown in Figure 14, the people can also drive this car under this state, the folding back vehicle meeting automatic speed-limiting of this moment, the highest riding speed is 10 kilometers/hour.

For the second time folding: unclamp catch gear between intermediate beam pipe and the back rest pipe and carry out once foldingly longitudinally, the handlebar of a side is bent downwards, folding back is as Figure 15 and shown in Figure 17, at this moment the user in tow this car walk.

Folding for the third time: unclamp and turn to upper boom and turn to catch gear between the lower beam, the folding downwards upper boom that turns to, meanwhile and rotate handlebar, folding again cushion further dwindles the volume after folding, and folding back is as Figure 16 and shown in Figure 180.

Claims (10)

1. the folding stand of a sulky vehicle, comprise front fork (1), front-axle beam pipe (2), deflecting bar (7) and back vent (6) and seat support link (110), it is characterized in that: folding beam pipe (3) before also including, intermediate beam pipe (4) and back rest pipe (5), the front end of preceding folding beam pipe (3) is connected with front-axle beam pipe (2) by the first manual take-up (12), preceding folding beam pipe (3) rear end is connected by the second manual take-up (13) with intermediate beam pipe (4), intermediate beam pipe (4) is hinged with one can form longitudinal folding back rest pipe (5) with respect to this intermediate beam pipe (4), intermediate beam pipe (4) is locked by horizontal latching device with back rest pipe (5), back rest pipe (5) is connected on the back vent (6) by the 3rd manual take-up (14), deflecting bar (7) comprises and turns to upper boom (71) and turn to lower beam (72) with this turns to that upper boom flexibly connects, turns to upper boom (71) and turns to lower beam (72) to lock by catch gear (73).

2. the folding stand of a kind of sulky vehicle according to claim 1, it is characterized in that: the described first manual take-up (12) comprises front end cover (15), rear side housing (16) and the adapter shaft (17) that can rotate, front end cover (15) is positioned at a side of front-axle beam pipe (2), rear side housing (16) is positioned at the opposite side of front-axle beam pipe (2) and circumferentially is fixed on the front-axle beam pipe (2), hole before one end of adapter shaft (17) passes successively on folding beam pipe (3) and the front-axle beam pipe (2) is threaded with rear side housing (16), and folding beam pipe (3) was captiveed joint with front end cover (15) with the hole on the front-axle beam pipe (2) before the other end of adapter shaft (17) passed successively.

3. the folding stand of a kind of sulky vehicle according to claim 2, it is characterized in that: the screw thread that described adapter shaft (17) connects rear side housing (16) is first screw thread (171), also be provided with second screw thread (172) that connects front end cover (15) on the adapter shaft (17), the rotation direction of first screw thread (171) and second screw thread (172) is opposite.

4. the folding stand of a kind of sulky vehicle according to claim 2, it is characterized in that: the described first manual take-up (12) also comprises and adapter shaft (17) bonded assembly rotation hand wheel (18), this rotation hand wheel comprises handwheel dish (182), the axial end of handwheel dish (182) be provided with cylinder (183) and with the circumferential bonded assembly axle sleeve (186) of adapter shaft (17), cylinder (183) be looped around axle sleeve (186) around, the axial end of described rear side housing (16) is provided with the cylindrical shell (161) that the described cylinder of confession (183) inserts, and this circumferentially is positioned in the cylindrical shell (161) with respect to the cylinder (183) that cylindrical shell (161) can form axial motion.

5. the folding stand of a kind of sulky vehicle according to claim 4, it is characterized in that: be arranged at intervals with groove (184) on the side face of the cylinder (183) of described rotation hand wheel (18) with the cylinder axially parallel, the side wall surface of the cylindrical shell (161) of described rear side housing (16) is provided with retractor device, this retractor device comprises the elastomeric element that is connected in the cylinder lateral wall face upside cinclides (167), and being inserted into latch segment (168) in cylinder (183) surface groove (184), elastomeric element is connected with latch segment (168).

6. the folding stand of a kind of sulky vehicle according to claim 2, it is characterized in that: be equipped with convex closure (21) on the axial end of described front end cover (15) and rear side housing (16), the two sides of described front-axle beam pipe (2) are provided with the pit (19) that inserts for convex closure.

7. the folding stand of a kind of sulky vehicle according to claim 1, it is characterized in that: seat support link (110) is a telescopic seat support link, cushion (11) is connected on the cushions support bar (110), the bottom of cushion (11) is provided with swivel mount (111) and fixed base plate (112), one end of fixed base plate (112) is provided with two link slots (113), one end of swivel mount (111) is provided with two contiguous blocks (114), contiguous block (114) snaps in the link slot (113) and connects by connecting pin, one of them contiguous block opening, another contiguous block is provided with swivel block (115), and fixed base plate (112) is connected with seat support link (110).

8. the folding stand of a kind of sulky vehicle according to claim 1, its feature also is: also comprise the car support (9) that is arranged on the back vent (6), car support (9) comprises the support base (91) that is connected on the back vent (6), the bilateral symmetry of support base (91) is provided with spike supporting disk (92), the two ends of a rotating shaft (95) are connected with spike (96) after passing through hole on the spike supporting disk (92), the axial end of each spike supporting disk (92) is provided with projection (93), the distance of the starting point of this projection and spike supporting disk (92) axial end is less than the distance of the terminal point and spike supporting disk (92) axial end of projection, be provided with lug boss between the Origin And Destination of projection, the destination county of projection is provided with along the axially extended block of spike supporting disk (94), and described spike is provided with the spike collecting device.

9. the folding stand of a kind of sulky vehicle according to claim 1, its feature also is: described catch gear (73) comprises and keeps frame (731), spanner (732) and lock fixture block (733), spanner (732) and locking fixture block (733) all by dowel fixes in keeping on the frame (731), one end of locking fixture block (733) is with spanner (732) clamping, and other end transfer engages to lower beam (72).

10. the folding stand of a kind of sulky vehicle according to claim 1, its feature also is: the both sides of described back vent (6) are provided with standby groove, and standby stretcher (20) is connected through the hinge in the standby groove.

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