83results about How to "Fast folding" patented technology

The invention discloses a portable scooter, which belongs to the technical field of folding bicycles. The portable scooter consists of a handlebar vertical rod, a handlebar cross rod, a handlebar, a front fork, a pedal, a brake, a frame and front and rear wheels, wherein the rear wheel is fixed on a rear shaft; a small fly wheel is arranged on the right side of the rear shaft; and the frame consists of a front frame, a lower frame and a connecting part. The portable scooter is a portable and foldable bicycle motocross capable of standing and being driven by the pedal. Under the condition that the wheels are relatively small, a jolt caused by the uneven pavement is greatly reduced by standing cycling. Due to the standing cycling, the portable scooter has no saddle, saddle vertical pipe, upper pipe and the like which are required by a common bicycle, so the portable scooter is small in size after the folding, light in weight and high in folding speed and enables a user to get on and off conveniently and safely. Under the condition that 9 inch wheels are adopted, the size of folded scooter is 54 centimeters x 22.6 centimeters x 8 centimeters. The portable scooter has rational structure design and is convenient and safe to use and mount and carry.

The invention discloses a 6-inch portable folding bicycle. The 6-inch portable folding bicycle comprises a connecting rod mechanism, a seat tube, a saddle, a rear fork, a bicycle body front framework, a front fork, handlebars, a front wheel, a rear wheel and a driving mechanism, and is characterized in that: the connecting rod mechanism is a fourfold connecting rod which consists of a main folding box, a front folding piece, a connecting rod and the seat tube, and is provided with a five-way tube, a semicircular locking shaft, a locking shaft handle, a safety fastener and a backer; the five-way tube is used as a shaft between the main folding box and the front folding piece; a middle shaft is arranged in the five-way tube; the bicycle body front framework is connected with the front folding piece; the rear fork is connected with the main folding box; the front fork is rotatably connected with a front head tube; the handlebars comprise a V-shaped folding handlebar and a folding handlebar vertical tube; the folding handlebar vertical tube is connected with the front fork; the V-shaped folding handlebar is arranged on the folding handlebar vertical tube; the diameters of the front wheel and the rear wheel are 6 inches; the front wheel is arranged on the front fork; the rear wheel is arranged on the rear fork; the rear wheel is connected with a small chain wheel; the rear part of the saddle is provided with an opening; and the driving mechanism comprises a middle shaft, two cranks, two pedals, a front-stage chain wheel, a front-stage passive chain wheel, a flywheel, a front-stage chain and a rear-stage chain.

The invention discloses a quick folding structure for an electric bicycle or a bicycle. A self-locking connecting rod is arranged, the upper end of the self-locking connecting rod is hinged to and linked with the rear end of a first front connecting rod, and the lower end of the self-locking connecting rod is hinged to and linked with the front end of a rear frame. When the upper end link joint of the self-locking connecting rod moves to the rear side of a motion borderline, the folding structure is folded and locked; when the upper end link joint of the self-locking connecting rod moves to the front side of the motion borderline, the folding structure is unlocked and unfolded. The self-locking connecting rod is connected with the first front connecting rod and the rear frame and plays a role in linkage, it is guaranteed that the first front connecting rod and the rear frame can move simultaneously when unfolding or folding operation is carried out, a bicycle body cannot be automatically opened because of the angle self-locking function of the self-locking connecting rod under the folding state, and the electric bicycle or the bicycle can be folded as long as a connecting plate is lifted. The quick folding structure has the advantages of being simple in folding process, high in folding speed and convenient to use.

A folding roller of a folding machine used for folding continuous sheets comprises a fixed mandrel and roller body sleeved on the mandrel and rotating around the mandrel, wherein the roller body is a tube body with a hollow cavity. By adopting the structure of the folding roller formed by combination of the hollow roller body and the mandrel, a stable and constant-pressure vacuum cavity smartly formed in the roller body and defined by the upper surface of the mandrel, two separating ribs and the inner cavity surface of the roller body is communicated with external extraction equipment, so that multiple airflow channels do not need to be processed, the problem of communicating with the air due to periodic communication of the airflow channel and an air ring inlet is solved when rotating with the vacuum roller, and the power of the external extraction equipment is effectively reduced. The production cost is effectively lowered, the purpose of energy conservation and emission reduction is achieved, the air ring structure with high processing difficulty is saved on the basis of ensuring the tidiness and conformity of the processed finished products, the production efficiency of the paper processing is effectively improved, and the operation difficulty and strength of the worker are reduced.

The invention discloses a folding skateboard bag which is a complementing type transportation tool, wherein the folding skateboard bag comprises a folding pedal, a case, rolling wheels, a guide mechanism, a brake system, a motor, a battery and a motor control system. The folding skateboard bag integrates portability, passing ability and economy, the case is designed into a commuting tool which is low in weight, high in strength, and capable of being folded easily, being carried indoors and into other transportation tools, the seamless combination of individual slow traffic, public transport and a destination is achieved, a user can go out flexibly, and the problem of a last mile is solved.

A V-handlebar portable electric bicycle normally walked after being folded comprises a body, a front fork, a V-shaped folding handlebar, a saddle, a front wheel, a rear wheel, a positioning hook, a manual drive mechanism and an electric drive system. A rear vertical beam, a bottom bracket, a rear oblique beam, an auxiliary shaft seat and a rear fork in the body are welded in sequence. A second channel part on the rear vertical beam, a bottom vane of a lower seat tube and a first channel part of an upper crossbeam are connected with a latch bolt. The V-shaped folding handlebar is disposed on the front fork. A handlebar holder of the V-shaped folding handlebar is an extruded cut aluminum profile part with a hole in the middle and grooves on two sides, two U-channel plastic liners are inserted into the two grooves of the handlebar holder. A left handlebar and a right handlebar are connected mutually locked through a quick release. The front wheel is mounted on the front fork. The rear wheel is mounted on the rear fork. The manual drive mechanism is mounted on the bottom bracket, an auxiliary shaft and the rear wheel. The electric drive system comprises a hub motor, a battery, a controller and a control switch. The hub motor is disposed on the front wheel. Both the battery and the controller are disposed in a rectangular hole of a front tube.

The invention discloses a rapid and foldable push type convenient three-wheeled electric pedal bicycle, which comprises a bicycle body back piece, a bicycle beam, a front pipe fitting, a support frame, a front fork, a V-shaped foldable handle, a front wheel, a back axle, two back wheels, a labor-driven mechanism and an electric driving system, wherein a back fork is welded on a main piece; a panel is fixed on the back fork; the support frame and the bicycle beam are rotationally connected with the main piece; the bicycle beam and the support frame are rotationally connected with the front pipe fitting; the V-shaped foldable handle is connected with the front fork; the front fork is connected with the front pipe fitting; the front fork bends backwards; the front wheel is arranged on the front fork; the back axle is arranged on the back fork; the two back wheels are connected to the back axle; a crankshaft and a front-grade gear are rotationally connected with the main piece; a positioning shaft is fixed together with the main piece; a pedal is sleeved on the positioning shaft; a connection lug is welded on the pedal; a swinging sheet is rotationally connected with the connection lug and the crankshaft; a back-grade gear is arranged on the main piece and a shaft fixing piece; a chain wheel is connected with the back-grade gear; a flywheel is arranged on the back axle; a chain is wound on the chain wheel and the flywheel; a motor is arranged on the front wheel; and a battery is arranged below the panel.

The invention discloses a clothes folding machine. The clothes folding machine comprises a supporting rack, a regulating unit, a storage unit, a primary folding unit, a secondary folding unit and a clothes dropping unit, wherein the top of the supporting rack is provided with a workbench slot, and the center position of the slot bottom of the workbench is provided with a clothes dropping hole; thestorage unit is arranged on the bottom of the supporting rack and corresponds to the clothes dropping hole; the primary folding unit, the secondary folding unit and the clothes dropping unit are arranged in the workbench slot, and are positioned on the same plane; the clothes dropping unit is perpendicularly arranged above the clothes dropping hole; the primary folding unit is oppositely arrangedat any two sides of the clothes dropping unit; the secondary folding unit is oppositely arranged at the two sides without the primary folding unit of the clothes dropping unit; the regulating unit isarranged in the workbench slot, and is fixedly connected to the primary folding unit, the secondary folding unit and the clothes dropping unit separately. The clothes folding machine can adaptively regulate multiple folding structures according to dimensions of clothes; and the multiple folding structures are sequentially matched to orderly fold and drop the clothes into the storage box, so thata user can directly lift and place the storage box into a clothes cabinet to accomplish work of folding and putting clothes in order.

The invention discloses an automatic folding and forming device for an opened carton. The automatic folding and forming device comprises a mold plate, a mold head, a first driving mechanism and a second driving mechanism, wherein a cavity chamber is formed in the mold plate; the cavity chamber comprises a main cavity chamber and four auxiliary cavity chambers; a first moving plate is arranged in the main cavity chamber; the four auxiliary cavity chambers are respectively positioned on four edges of the main cavity chamber and respectively communicate with the main cavity chamber; a second moving plate matched with the corresponding auxiliary cavity chamber is arranged in the corresponding auxiliary cavity chamber of the four secondary cavity chambers; the mold head comprises a first pressing plate and a second pressing plate, wherein the shape of the first pressing plate is matched with that of the cross section of the cavity chamber; an opening which penetrates through the upper end surface and the lower end surface of the first pressing plate and allows the second pressing plate to penetrate is formed in the first pressing plate; the shape of the second pressing is matched with that of the cross section of the main cavity chamber in the cavity chamber; the first driving mechanism is used for driving the first pressing plate to move up and down; the second driving mechanism is used for driving the second pressing plate to move up and down. According to the automatic folding and forming device disclosed by the invention, the producing efficiency of an enterprise is effectively improved, and the producing cost of the enterprise is reduced.

The invention provides a display desk which is provided with four groups of combined desk legs, horizontal support pieces connected among the combined desk legs and bed plates at the tops of the four groups of combined desk legs. Every combined desk leg comprises a fixing piece and two rotation pieces, wherein the fixing piece comprises a base plate, a panel fixed on one side of the base plate and forming a T shape with the base plate, a left hollow shaft, a middle hollow shaft and a right hollow shaft; the left hollow shaft, the middle hollow shaft and the right hollow shaft are fixed on the other side of the base plate and distributed in a triangular shape; the rotation pieces are hollow pieces and each rotation piece is divided into an outer cavity and an inner cavity through a partition plate, open slots penetrating through both two ends and the outer cavities are formed on planes, which are parallel to the partition plates, onthe outer sides of the rotation pieces, and a snap ring is arranged at one corner of the interior of each rotation piece; and the two rotation pieces are movably connected on the left hollow shaft and right hollow shaft of the fixing piece through the snap rings of the two rotation pieces respectively, the horizontal support pieces are detachably connected with the rotation pieces, and the bed plates are fastened on positioning pins of the four fixing pieces through fixing holes on the bottom surfaces of the bed plates and detachably connected with the four groups of combined desk legs. The display desk has the characteristics of convenience for storage, transportation and assembly, and increase of auxiliary functions.

The invention discloses an automatic box folding machine with a lining.The automatic box folding machine comprises a machine body frame, a bearing plate, a feeding bin, a first feeding mechanical arm, a box bottom folding mechanism, a second feeding mechanical arm and a box cover folding mechanism. According to the automatic box folding machine, paper box plates are placed in the feeding bin, then, the paper box plates are conveyed on the bearing plate through the first feeding mechanical arm and the second feeding mechanical arm, and in the conveying process, the paper box plates are folded into packaging boxes through the box bottom folding mechanism and the box cover folding mechanism, so that manual folding is replaced, the folding speed of the automatic box folding machine is higher than that of manual folding, and the packaging box folding efficiency can be greatly improved; and in addition, the number of needed operators is small, and the folding cost of the packaging boxes can be greatly reduced.

The invention discloses an inserting and clamping type carton full-automatic folding machine. The inserting and clamping type carton full-automatic folding machine comprises a rack, a controller, a carton grabbing mechanism, a carton conveying mechanism, a first edge folding mechanism, a second edge folding mechanism, a third edge folding mechanism, a fourth edge folding mechanism and a pushing mechanism. A carton can enter the rack through a carton feeding channel. The carton grabbing mechanism can grab the carton into the rack and drive the carton to move towards the other end of the carton onto the carton conveying mechanism in the direction perpendicular to the feeding direction of the carton. The first edge folding mechanism can open the carton and fold a front first long edge of the carton entering the rack in the moving direction. The second edge folding mechanism, the third edge folding mechanism and the fourth edge folding mechanism fold a first short edge, a second short edge and a second long edge in sequence respectively. The carton conveying mechanism is used for driving the carton to move forwards. The pushing mechanism can push the inserting and clamping position on the second long edge into the carton. The controller controls the carton grabbing mechanism, the carton conveying mechanism, the first edge folding mechanism, the second edge folding mechanism, the third edge folding mechanism, the fourth edge folding mechanism and the pushing mechanism to operate. The inserting and clamping type carton full-automatic folding machine achieves full-automatic folding of the inserting and clamping type carton, and the carton folding speed is high.

A quick foldable, pushable and portable electric pedal bike comprises a body rear part, a beam, a front pipe fitting, a support frame, a front fork, a V-shaped foldable handle, a front wheel, a rear wheel, a manual driving mechanism and an electric driving system. A bearing lining ring of the body rear part is inlaid in a main part, a shaft fixing part and a rear fork are connected with the main part, the support frame and the beam are rotationally connected with the main part, the beam is rotationally connected with a lock hook, the lock hook is connected with the main part in a locking manner, the beam and the support frame are rotationally connected with the front pipe fitting, the V-shaped foldable handle is connected with the front fork, the front fork is connected with the front pipe fitting, the front wheel is mounted on the front fork, the rear wheel is mounted on the rear fork, a preceding-stage gear of the driving mechanism is connected with a crankshaft and the main part, a positioning shaft is fixed to the main part, pedal levers are in sleeve joint with the positioning shaft, connecting lugs are welded on the pedal levers, swing sheets are connected with the connecting lugs and the crankshaft, a backward-stage gear is mounted on the main part and the shaft fixing part, a sprocket is coaxially connected with the backward-stage gear, a flywheel is mounted on the rear wheel, a chain is wound on the sprocket and the flywheel, and the electric driving system comprises a motor, a battery box, a battery, a controller and a control switch.

The invention relates to a foldable bicycle and a manufacturing process thereof. The foldable bicycle comprises a front frame and a rear frame, the front frame is composed of a front fork pipe, a stem handle connected at the upper end of the front fork pipe, a front wheel connected with a fork end of the front fork pipe, and an L-shaped fixing bowl group pipe connected in the middle of the front fork pipe in a pivoted manner, the rear frame is composed of a rear fork pipe, a pipe cap connected at the upper end of the rear fork pipe, a rear wheel connected with a fork end of the rear fork pipe, and a seat rod connected in one of two supporting pipes in an inserted manner, a chain wheel power mechanism is arranged on the rear fork pipe which is connected with the supporting pipes, a folding mechanism is arranged between the L-shaped fixing bowl group pipe and the rear fork pipe and composed of an L-shaped sliding lift pipe which is mounted on the front fork pipe in a sleeved manner and positioned between a handlebar stem and the L-shaped fixing bowl group pipe, a front connecting pipe connected with a side pipe end of the L-shaped sliding lift pipe in a pivoted manner, and a double-row flat iron connecting rod connected with a side pipe end of the L-shaped fixing bowl group pipe in a pivoted manner, a position where the double-row flat iron connecting rod, the front connecting pipe and the pipe cap of the rear fork pipe are intersected forms a pivoted connection mechanism through a pivot, a free end head of the double-row flat iron connecting rod is connected with the seat rod in a contacting manner, and the foldable bicycle further comprises a self-locking mechanism after folding.

The invention relates to a folding child-mother constant temperature cabinet. The constant temperature cabinet comprises mother cabinet and several child cabinet set in the mother cabinet, wherein the mother cabinet comprises mother cabinet body and mother cabinet hold-over plate, the child cabinet comprises flexible child cabinet body and hard child box hold-over plate, both of the mother cabinet body and child cabinet body are rectangular blocks, the top surface of the mother cabinet body and child cabinet body can be turned over freely and can cover the opening on the top, the guiding crease are set on the outside of the four side faces of the child cabinet body, it can be folded in half up and down and the central of the folding stands out from the inner side of the child cabinet body when the four side faces of the child cabinet body are fully folded long their own crease; the mother plate hold-over plates are respectively set on the inner sides of the six faces of the mother cabinet body, and the child cabinet hold-over plates are respectively set on the inner sides of the six faces of the child cabinet body and the child cabinet hold-over plates on at least four sides are dismountable. The constant temperature cabinet adopts double insulating layers which has a good effect of constant temperature, and different objects can be placed in the cabinet respectively, the cabinet is light in weight, easy in folding operating, small in volume after folded and not easy to be crumpled.

The invention relates to a frame of a cart, in particular to a simple, convenient and swift four-link fold-up frame. According to the technical proposal provided by the invention, the frame can be divided into four parts which are an upper pipe, a head pipe, a forepart of a lower pipe and a posterior part of a lower pipe respectively; the four parts form a structure of the four-link; wherein, an upper end of the head pipe is hinged with a front end of the upper pipe and a fold-up joint is formed in the connection part; a lower end of the head pipe is hinged with a front end of the forepart of the lower pipe and the fold-up joint is formed in the connection part; a back end of the forepart of the lower pipe is hinged with a front end of the posterior part of the lower pipe and the fold-up joint is formed in the connection part; a back end of the posterior part of the lower pipe is hinged with a back end of the upper pipe and the fold-up joint is formed in the connection part. When a horizontal pipe of the four-link fold-up frame folds up, the horizontal pipe can rotate in a vertical plane, and therefore the operation is simple; the upper pipe of the frame is of an arch shape, which can more effectively enhance intensity of the horizontal pipe and skillfully evade the fold-up joint.

The invention discloses a foldable crank which comprises a crank body, a claw sheet, a connecting disc and a fluted disc. A convex table is formed at the outer side of the claw sheet and a connecting block is extended in the radial direction from the convex table; a connecting portion is formed on the head portion of the crank body and the connecting portion is movably connected with the connecting block. According to the foldable crank, the crank body and the claw sheet are improved, so that the crank body is provided with the connecting portion and the claw sheet is provided with the connecting block. Due to the match of a connecting piece and a pulling piece, the crank body can vertically rotate around the connecting block of the claw sheet through the connecting portion so that the purpose of folding the crank body can be achieved. The foldable crank is simple in operation and high in folding speed.

The invention discloses a retracting and folding multifunctional integrated machine for spectacles, which solves the problem of heavy manual workload in the prior art, and has the advantages of high automation degree and good cleaning effect. The scheme is as follows: the retracting and folding multifunctional integrated machine for spectacles comprises a rotary separation mechanism and a spectacles leg folding mechanism, wherein the rotary separation mechanism comprises a rotary separation disk which is used for receiving spectacles and a conical whirling separation part which is arranged on the inner circumference of the rotary separation mechanism, the conical whirling separation part and the rotary separation disk do differential rotation motion, and the end part of the conical whirling separation part is provided with an outlet for delivering the spectacles out of the outlet; the spectacles leg folding mechanism comprises a second conveying slideway and folding units, the second conveying slideway is inclined downwards to receive the spectacles, and lug sides are arranged on the two sides of the second conveying slideway; and the folding units are arranged on the middle lower part of the second conveying slideway, the spectacles enter the folding units through the second conveying slideway, and each folding unit comprises a first arc flexible push plate and a second arc flexible push plate.

The invention relates to a special clothes folding device for an automatic clothes folding device. The special clothes folding device for the automatic clothes folding device comprises an installing plate; two fixing columns are arranged in the middle of the upper end face of the installing plate; a center plate is welded to the upper end faces of the two fixing columns; the front side and the rear side of the installing plate are each provided with two side edge folding branch chains; a bottom edge folding branch chain is installed on the right side of the installing plate and comprises a motor frame installed on the upper end face of the installing plate, a second supporting plate welded to the upper end face of the installing plate, and a second ejecting column welded to the upper end face of the installing plate. A second driving motor is installed on the motor frame and provided with a left connecting shaft through a coupler; a square fixing block is welded to the right end of the left connecting shaft; a right connecting shaft is welded to the right end of the square fixing block and installed on the second supporting plate through a bearing; and the bottom edge folding plate is installed on the upper end face of the square fixing block. The special clothes folding device for the automatic clothes folding device can achieve the fast clothes folding function of clothes and has the beneficial effects of being easy and convenient to operate, high in folding speed and work efficiency and the like.

The invention discloses a folding device for facial mask processing and production, and belongs to the technical field of facial mask processing. The folding device comprises a work table, a conveying belt, a bearing base, a feeding device, a flattening device, a folding device body, a material taking device, a packaging device, a grouting device, a feeding box and a collecting box, the work table is placed on the horizontal plane, and the feeding box is placed on the top of the work table. The bearing base is installed on the top of the work table, the conveying belt is installed on the top of the bearing base, the feeding device is installed on the top of the work table, the flattening device is installed on the top of the bearing base, the folding device body is installed on the top of the work table, the material taking device is installed on the top of the work table, the packaging device is installed on the top of the work table, the grouting device is installed on the packaging device, and the collecting box is installed on the top of the work table. According to the folding device, the surface of a facial mask is flattened through the flattening device, wrinkles on the surface of the facial mask are avoided, the facial mask can be quickly and efficiently folded through the folding device, and the working efficiency is improved.

The invention relates to a folding bicycle and a manufacturing process thereof. The folding bicycle comprises a front fork pipe, a handlebar disc, a front wheel and a folding mechanism which form a front bicycle frame, wherein the handlebar disc and the front wheel are connected with the two ends of the front fork pipe, and the middle of the front fork pipe is sleeved with the folding mechanism. The folding bicycle further comprises a rear fork pipe, a pipe cap, a rear wheel, a positioning plate, a seat pipe and a crankset shaft which form a rear bicycle frame, wherein the pipe cap and the rear wheel are connected with the two ends of the rear fork pipe, and the positioning plate and the seat pipe are welded to the middle of the rear fork pipe. The rear fork pipe is pivotally connected with the folding mechanism to enable the front bicycle frame and the rear bicycle frame to form the whole bicycle. The folding bicycle is characterized in that during folding, the rear bicycle frame can rotate by 90 degrees, the two wheels are axially folded, and the folding bicycle can be pulled to travel after two shaft heads are inserted and positioned; during semi-folding, a seat rod and the oval handlebar disc are bolted into an inclined strut shape and mounted on a fork shoulder to form a seat, and universal wheels are mounted under a stool to form a trolley; and during unfolding, the rear bicycle frame is rotated back by 90 degrees to enable the front bicycle frame and the rear bicycle frame to form a ridable stable state. The most important characteristics of the folding bicycle are that folding and unfolding are brisk, and functions are practical.

The invention discloses a portable folding electric moped, which comprises a telescopic rotating handle, a front fork, a front member, a middle beam, a five-way pipe connecting member, a five-way pipe, a shock absorption type connecting member, a rear fork member, a saddle, a front wheel, a rear wheel, a manpower driving mechanism and an electric driving system, wherein the telescopic rotating handle is formed by connecting a left handlebar, a right handlebar, an upper locking member and a lower locking member, the front member is rotationally connected with the lower locking member and the middle beam, the middle portion of the middle beam is connected with the five-way pipe connecting member, the rear end of the middle beam is connected with the shock absorption type connecting member, the five-way pipe is embedded into the five-way pipe connecting member, the shock absorption type connecting member is rotationally connected with the rear fork member, the connecting rod of the saddleis rotationally connected with the saddle tube of the saddle and the front member, the front wheel is installed on the front fork, the rear wheel is installed on two rear fork sheets, the driving mechanism comprises a middle shaft, two cranks, a tooth disc, two pedals, a front-stage small chain wheel, a rear-stage chain wheel, a shaft sleeve, a flywheel, a front-stage chain and a rear-stage chain, the electric driving system comprises a motor, a battery, a controller, a control switch and an assistance sensor, and the motor is arranged on the rear wheel.

A magnetic-folding positioning portable bicycle comprises a telescopic double-rotation type handlebar, a front fork, a front part, a middle beam, a folding connecting part, a clamping quick release part, a tug part, a rear fork part, a saddle, a front wheel, a rear wheel and a driving mechanism, the telescopic double-rotation type handlebar is formed by connecting a left handlebar, a right handlebar, an upper locking part and a lower locking part, the front part is rotationally connected with a front shaft tube, the middle beam is rotationally connected with the front part, the middle beam isformed by connecting a beam pipe, a front connecting part, a front connecting part locking quick release, an upper magnetic attraction part and a lower magnetic attraction part, the beam pipe is sleeved with the folding connecting part and the tug part, the folding connecting part is rotationally connected with the saddle and the rear fork part respectively, the rear fork part is formed by connecting two rear fork parts, a five-way pipe and a shock absorption part, the shock absorption part abuts against a tug frame of the tug part to generate a shock absorption effect, the two rear fork partsare connected with the rear wheel, the saddle is formed by connecting a seat pipe, a locking piece, a connecting rod and a saddle seat, the front wheel is installed on the front fork, and the drivingmechanism is composed of a middle shaft, two cranks, a crankset, two pedals, a flywheel and a chain.