CN109372702B

CN109372702B - Special climbing device for wind tower for wind power generation

Info

Publication number: CN109372702B
Application number: CN201811508216.3A
Authority: CN
Inventors: 谷子恒; 谷爱明
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2020-07-24
Anticipated expiration: 2038-12-11
Also published as: CN109372702A

Abstract

The invention discloses a special climbing device for a wind tower for wind power generation, which comprises a tower body, wherein two first straight racks are fixed on the side wall of one end in the tower body, a plurality of cross rods are jointly fixed between the two first straight racks, a second straight rack is fixed on the side wall of the other end in the tower body, bearing grooves are formed in opposite side walls in the tower body, bearing plates are jointly installed in the two bearing grooves, a positioning device is arranged at the lower end of each bearing plate, a vehicle body structure is arranged at the upper end of each bearing plate, a second fixing plate is arranged in each vehicle body structure, a direction changing device is arranged on one side of each fixing plate, and a worm is arranged on each direction changing. The invention is convenient for the staff to stably lift, thereby being convenient for the maintenance of the wind tower, effectively avoiding the external influence, ensuring the stability of the lifting and maintenance process, effectively increasing the number of carrying tools, improving the quality and efficiency of the maintenance, being convenient for finding and processing the problems in time and ensuring the working quality and efficiency of the wind tower.

Description

Special climbing device for wind tower for wind power generation

Technical Field

The invention relates to the technical field of climbing equipment, in particular to a climbing device special for a wind tower for wind power generation.

Background

The wind tower is a facility for providing fresh air for urban underground space, is usually positioned at the top end of a building, and can effectively ensure that air in the underground space and outside air circulate, so that the quality of gas in the underground space is improved.

For the better gas quality who guarantees the underground space, need regularly overhaul wind tower, thereby guarantee that wind tower can normally function, conventional method is that the staff fixes the rope on wind tower top, thereby be convenient for the gliding, overhaul wind tower, but receive external influence easily, when wind-force is great, cause easily and rock, influence the safety of construction, can not stably overhaul, and be not convenient for carry the maintenance instrument, be unfavorable for carrying out the accurate maintenance, for this reason, we have proposed the special climbing ware of wind power generation wind tower and have solved above-mentioned problem.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a climbing device special for a wind tower for wind power generation.

In order to achieve the purpose, the invention adopts the following technical scheme:

the special climbing device for the wind tower for wind power generation comprises a tower body, wherein two first straight racks are fixed on one end side wall in the tower body, a plurality of cross rods are jointly fixed between the two first straight racks, a second straight rack is fixed on the other end side wall in the tower body, bearing grooves are formed in opposite side walls in the tower body, a bearing plate is jointly installed in the two bearing grooves, a positioning device is arranged at the lower end of the bearing plate, a vehicle body structure is arranged at the upper end of the bearing plate, a second fixing plate is arranged in the vehicle body structure, a direction changing device is arranged on one side of the second fixing plate, a worm is arranged on the direction changing device, a transmission device is arranged at one end of the worm and is arranged on one side of the second fixing plate, two first gears are arranged on the direction changing device and are respectively meshed with the two first straight racks, and two electronic buttons are arranged on the vehicle, the vehicle body structure is provided with a second gear, the second gear is meshed with a second straight rack, the positioning device comprises sleeves fixed on two sides of the lower end of the bearing plate, inserting rods are sleeved in the two sleeves in a sliding mode, a plurality of inserting grooves are formed in the side wall of one end in the bearing groove at equal intervals, the two inserting rods respectively correspond to the two inserting grooves, a supporting rod is fixed on one side of the bearing plate and fixed on one side of the lower end of a second fixing plate, a first electric telescopic rod is fixed on one side of the lower end of the supporting rod, one end of the first electric telescopic rod is rotatably connected with two push rods, the two push rods are located between the two inserting rods, one ends of the two push rods are respectively rotatably connected to the opposite sides of the two inserting rods, the vehicle body structure comprises a vertical plate fixed on the upper end of the bearing plate, and the other, the upper end one side of second fixed plate is fixed with the sleeve pipe, the slide in the sleeve pipe has cup jointed the carriage release lever, sheathed tube one side is equipped with fixing device, the handlebar is installed to the upper end of carriage release lever, and two electronic button are all installed in upper end one side of carriage release lever, the upper end opposite side of second fixed plate is fixed with the montant, the upper end of montant is fixed with first fixed plate, one side of first fixed plate is equipped with the opening, and the second gear revolve the connection in the opening, the saddle is installed to the upper end of first fixed plate, deviator is including fixing the install bin in second fixed plate one side, it has cup jointed the transmission shaft to revolve jointly on install bin and the second fixed plate, fixed cover is equipped with two first conical gear on the transmission shaft, and two first conical gear all are located the install bin, be fixed with first connecting plate and second connecting plate respectively on the relative lateral wall in the install bin, the rotating rod is rotatably sleeved on the first connecting plate, one end of the rotating rod is rotatably connected to one end side wall in the installation box, the other end of the rotating rod is fixed with a second bevel gear, the second bevel gear is meshed with one of the first bevel gears, a third bevel gear is rotatably sleeved on the second connecting plate and is meshed with the other first bevel gear, one side of the third bevel gear is provided with a first groove, the worm is rotatably sleeved on one end side wall of the installation box, a fixed rod is rotatably sleeved on the worm and is rotatably connected to one end side wall in the installation box, one side of the fixed rod is provided with a second groove, one end of the worm is provided with a moving groove, sliding grooves are formed in opposite side walls in the moving groove, sliding blocks are installed in the two sliding grooves, and a sliding rod is commonly fixed on opposite sides of the two sliding blocks, a second electric telescopic rod is fixed on the side wall of one end in the installation box and is positioned at one side of the fixed rod, a third connecting plate is fixed at one end of the second electric telescopic rod, a connecting rod is rotatably sleeved on the third connecting plate, pressing plates are fixed at two ends of the connecting rod, the two pressing plates are positioned between the first groove and the second groove, one end of the sliding rod is fixed at one side of one of the pressing plates, the fixed rod and the rotating rod are connected through a transmission belt, the transmission device comprises a worm wheel arranged at the other end of the worm, the worm wheel is meshed with the worm wheel, a connecting shaft is fixed on the worm wheel and is rotatably sleeved on the second fixed plate, cranks are respectively fixed at two ends of the connecting shaft, pedals are respectively installed at one ends of the two cranks, and the worm is rotatably sleeved on one side of the second fixed plate, fixing device is including running through the screw sleeve that sets up on the sleeve pipe, the internal spiral shell of screw sleeve has become the bolt, the one end of bolt runs through the screw sleeve and extends to in the sleeve pipe, the one end and the carriage release lever of bolt are inconsistent, all the cladding has the rubber layer on handlebar and the saddle, upper end one side of second fixed plate is fixed with the bearing box, the guard shield is installed to one side of second fixed plate, and worm wheel all are located the guard shield.

Compared with the prior art, the invention has the beneficial effects that:

1. through the matching of the first straight rack, the second straight rack, the transmission device and the direction changing device, the lifting is convenient, the problem that the maintenance cannot be stably and safely solved is solved, the purpose of ensuring the construction safety is achieved, the pedal is stepped by workers to provide power, so that the fixed plate and the bearing box can be conveniently lifted, the external influence can be effectively avoided, the stability in the lifting process is ensured, the number of carrying equipment can be increased, the wind tower can be conveniently maintained, and the problems can be timely found and solved;

2. through the matching of the fixing device and the vehicle body structure, the pedal type maintenance vehicle is convenient to adapt to different workers, the workers can conveniently tread, the use comfort level is improved, the pedal type maintenance vehicle can be effectively fixed, the workers can conveniently and stably maintain, the external influence is avoided, and the maintenance quality is improved;

in conclusion, the lifting device is convenient for workers to stably lift, so that the wind tower is convenient to overhaul, external influence can be effectively avoided, the stability of the lifting and overhauling processes is ensured, the number of carrying tools can be effectively increased, the overhauling quality and efficiency are improved, problems can be conveniently found and treated in time, and the working quality and efficiency of the wind tower are ensured.

Drawings

FIG. 1 is a schematic diagram of the internal structure of a tower body of a climbing device special for a wind power generation wind tower, which is provided by the invention;

FIG. 2 is a schematic view of an internal structure of a second fixing plate of the climbing device specially used for the wind tower for wind power generation provided by the invention;

FIG. 3 is a schematic view of an internal structure of an installation box of the climbing device special for the wind tower for wind power generation provided by the invention;

FIG. 4 is an enlarged view at the A position of the climbing device special for the wind tower for wind power generation provided by the invention;

FIG. 5 is a schematic view of an external structure of a vehicle body structure of the climbing device specially used for the wind tower for wind power generation provided by the invention;

fig. 6 is a top view of a first straight rack of the climbing device specially used for the wind tower for wind power generation provided by the invention.

In the figure: 1 first straight rack, 2 bearing grooves, 3 handlebars, 4 electronic buttons, 5 moving rods, 6 bolts, 7 threaded sleeves, 8 sleeves, 9 first gears, 10 cross bars, 11 slots, 12 towers, 13 second straight racks, 14 saddles, 15 first fixing plates, 16 second gears, 17 vertical rods, 18 bearing boxes, 19 second fixing plates, 20 first electric telescopic rods, 21 push rods, 22 inserted rods, 23 sleeves, 24 connecting shafts, 25 cranks, 26 pedals, 27 transmission shafts, 28 installation boxes, 29 shields, 30 worms, 31 worm wheels, 32 first bevel gears, 33 second bevel gears, 34 first connecting plates, 35 rotating rods, 36 transmission belts, 37 third bevel gears, 38 first grooves, 39 pressing plates, 40 second connecting plates, 41 connecting rods, 42 fixing rods, 43 sliding grooves, 44 sliding rods, 45 sliding blocks, 46 moving grooves, 47 second grooves, 48 second electric telescopic rods, 49 third connecting plates, 49 second grooves, 46 moving grooves, 47 second grooves, 48 connecting plates, 6 connecting plates, 11 third electric telescopic rods, 50 risers, 51 loading boards, 52 gaps, 53 bracing pieces.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-6, the climbing device special for the wind tower for wind power generation comprises a tower body 12, wherein two first straight racks 1 are fixed on the side wall of one end in the tower body 12, and a plurality of cross bars 10 are jointly fixed between the two first straight racks 1 to form a shape similar to a ladder, so that the climbing device is convenient to lift;

a second straight rack 13 is fixed on the side wall of the other end in the tower body 12, bearing grooves 2 are arranged on opposite side walls in the tower body 12, bearing plates 51 are jointly installed in the two bearing grooves 2, so that the bearing plates 51 can only move along the bearing grooves 2, and a positioning device is arranged at the lower end of each bearing plate 51, so that the fixing is convenient and the overhaul by workers is convenient;

the upper end of the bearing plate 51 is provided with a vehicle body structure, so that adjustment is convenient, and further various workers are convenient to adapt to, a second fixing plate 19 is arranged in the vehicle body structure, and a bearing box 18 is fixed on one side of the upper end of the second fixing plate 19, so that more maintenance tools can be conveniently borne, and further the maintenance efficiency and quality are improved;

a direction changing device is arranged on one side of the second fixing plate 19, so that the rotation direction can be conveniently adjusted, and further the control can be conveniently carried out through the electronic button 4, so that a worker can conveniently tread forwards, the direction changing device is provided with a worm 30, so that the transmission is convenient, one end of the worm 30 is provided with a transmission device, and the transmission device is arranged on one side of the second fixing plate 19, so that the transmission efficiency can be ensured, the movement is convenient, and the labor intensity of the worker is reduced;

be equipped with two first gears 9 on the deviator, two first gears 9 mesh with two first straight racks 1 respectively mutually, first gear 9 forward rotation or antiport, thereby conveniently go up and down, the last two electronic button 4 that are equipped with of body structure, the body structure is equipped with second gear 16, and second gear 16 meshes with second straight rack 13 mutually, two first gear 9 forward rotations or antiport, thereby conveniently go up and down, and then be convenient for overhaul fast, second gear 16 helps promoting the stationarity of removal.

In the invention, the positioning device comprises sleeves 23 fixed on two sides of the lower end of the bearing plate 51, the two sleeves 23 are sleeved with the inserted rods 22 in a sliding manner, the side wall of one end in the bearing groove 2 is provided with a plurality of slots 11 at equal intervals, the two inserted rods 22 respectively correspond to the two slots 11, and the inserted rods 22 move so as to be inserted into the slots 11, so that the stable fixation can be realized, and the overhaul by workers is convenient;

one side of loading board 51 is fixed with bracing piece 53, and bracing piece 53 is fixed in lower extreme one side of second fixed plate 19, lower extreme one side of bracing piece 53 is fixed with first electric telescopic handle 20, the one end of first electric telescopic handle 20 is rotated and is connected with two push rods 21, two push rods 21 all are located between two inserted bars 22, the one end of two push rods 21 is rotated respectively and is connected in the relative one side of two inserted bars 22, press one of them electronic button 4, thereby can control first electric telescopic handle 20 and stretch out and draw back, thereby can promote the inserted bar 22 through push rod 21 and remove, and then be convenient for quick fixed maintenance, and conveniently remove.

According to the invention, the vehicle body structure comprises a vertical plate 50 fixed at the upper end of a bearing plate 51, the other side of the lower end of a second fixing plate 19 is fixed at the upper end of the vertical plate 50, a sleeve 8 is fixed at one side of the upper end of the second fixing plate 19, a moving rod 5 is slidably sleeved in the sleeve 8, a fixing device is arranged at one side of the sleeve 8, the moving rod 5 can be conveniently moved and fixed through the fixing device, a handlebar 3 is installed at the upper end of the moving rod 5, and then the handlebar 3 can be conveniently adjusted to adapt to workers of different body types;

two electronic button 4 all install in the upper end one side of carriage release lever 5, the upper end opposite side of second fixed plate 19 is fixed with montant 17, the upper end of montant 17 is fixed with first fixed plate 15, one side of first fixed plate 15 is equipped with opening 52, and second gear 16 rotates to be connected in opening 52, second gear 16 can improve the stationarity of removal, saddle 14 is installed to the upper end of first fixed plate 15, all the cladding has the rubber layer on handlebar 3 and the saddle 14, the comfort level of using is improved.

In the invention, the direction changing device comprises an installation box 28 fixed on one side of the second fixing plate 19, the installation box 28 and the second fixing plate 19 are jointly rotatably sleeved with a transmission shaft 27, two first bevel gears 32 are fixedly sleeved on the transmission shaft 27, the two first bevel gears 32 are oppositely arranged and respectively drive the two first bevel gears 32 to rotate, and the transmission shaft 27 can rotate in the forward direction or in the reverse direction;

the two first bevel gears 32 are located in the installation box 28, a first connection plate 34 and a second connection plate 40 are respectively fixed on opposite side walls in the installation box 28, a rotating rod 35 is rotatably sleeved on the first connection plate 34, one end of the rotating rod 35 is rotatably connected on one end side wall in the installation box 28, a second bevel gear 33 is fixed at the other end of the rotating rod 35, the second bevel gear 33 is meshed with one of the first bevel gears 32, a third bevel gear 37 is rotatably sleeved on the second connection plate 40, the third bevel gear 37 is meshed with the other first bevel gear 32, and the second bevel gear 33 and the third bevel gear 37 can respectively drive one of the first bevel gears 32 to rotate, so that the rotation direction of the first gear 9 can be controlled, and ascending or descending is facilitated;

one side of the third bevel gear 37 is provided with a first groove 38, the worm 30 is rotatably sleeved on one end side wall of the installation box 28, the worm 30 is rotatably sleeved with a fixing rod 42, the fixing rod 42 is rotatably connected on one end side wall in the installation box 28, one side of the fixing rod 42 is provided with a second groove 47, one end of the worm 30 is provided with a moving groove 46, opposite side walls in the moving groove 46 are respectively provided with a sliding groove 43, two sliding grooves 43 are respectively provided with a sliding block 45, opposite sides of the two sliding blocks 45 are jointly fixed with a sliding rod 44, and the sliding blocks 45 move in the sliding grooves 43, so that the sliding rods 44 can conveniently rotate along with the worm 30 while moving, and the lifting direction can be conveniently adjusted and controlled;

be fixed with second electric telescopic handle 48 on the one end lateral wall in the install bin 28, and second electric telescopic handle 48 is located one side of dead lever 42, the one end of second electric telescopic handle 48 is fixed with third connecting plate 49, it has cup jointed connecting rod 41 to rotate on the third connecting plate 49, connecting rod 41 both ends all are fixed with clamp plate 39, two clamp plates 39 are located between first recess 38 and the second recess 47, and the one end of slide bar 44 is fixed in one side of one of them clamp plate 39, connect through drive belt 36 transmission between dead lever 42 and the dwang 35, it is flexible through another electronic button 4 control second electric telescopic handle 48, thereby can drive connecting rod 41 through third connecting plate 49, thereby enable one in two clamp plates 39 to contradict first recess 38 or second recess 47 as required, thereby make things convenient for control rotation direction, and then be convenient for carry out steady lift.

In the invention, the transmission device comprises a worm wheel 31 arranged at the other end of the worm 30, the worm 30 is meshed with the worm wheel 31, the worm wheel 31 is fixedly provided with a connecting shaft 24, the connecting shaft 24 is rotatably sleeved on the second fixing plate 19, a ratchet wheel structure is arranged between the worm wheel 31 and the connecting shaft 24 so as to ensure that only forward treading can be realized, two ends of the connecting shaft 24 are respectively fixedly provided with a crank 25, one end of each of the two cranks 25 is respectively provided with a pedal 26, the worm 30 is rotatably sleeved on one side of the second fixing plate 19, one side of the second fixing plate 19 is provided with a shield 29, the worm 30 and the worm wheel 31 are both positioned in the shield 29, so that a worker can be effectively protected, the worker can tread the pedals 26, the worm wheel 31 is driven to rotate by the cranks 25, and the worm wheel 31 is.

According to the invention, the fixing device comprises a threaded sleeve 7 penetrating through a sleeve 8, a bolt 6 is screwed in the threaded sleeve 7, one end of the bolt 6 penetrates through the threaded sleeve 7 and extends into the sleeve 8, one end of the bolt 6 is abutted against the movable rod 5, and the bolt 6 is rotated to abut against the movable rod 5 for fixing, so that the use is convenient.

In the invention, when in use, the bolt 6 is rotated, so that the position of the moving rod 5 and the position of the handlebar 3 can be conveniently adjusted, so that a worker can conveniently use the bicycle, the worker sits on the saddle 14, two feet respectively step on the two pedals 26 forwards, so that the worm wheel 31 can be driven to rotate through the connecting shaft 24, the worm wheel 31 can drive the worm 30 to rotate, so that the two pressing plates 39 can be driven to rotate through the sliding rod 44, the second electric telescopic rod 48 can drive the third connecting plate 49 to move through one of the electronic buttons 4, so that the two pressing plates 39 can be driven to move, one of the pressing plates 39 can be conveniently abutted against the first groove 38 or the other pressing plate 39 can be conveniently abutted against the second groove 47, so that the third bevel gear 37 can be conveniently driven or the second bevel gear 33 can be driven to rotate through the driving belt 36, so that the rotating direction of the first gear 9 can be conveniently, thereby conveniently go up and down, after going up and down to suitable position, press another electronic button 4 to enable first electric telescopic handle 20 push-and-pull push rod 21, thereby conveniently make in inserted bar 22 injects the slot 11 of both sides, and then can stably fix, make things convenient for the staff to take out the instrument from bearing box 18 and overhaul, second gear 16 also helps holistic steady lift.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. Special climbing ware of wind power generation wind tower, including tower body (12), its characterized in that: the tower is characterized in that two first straight racks (1) are fixed on one end side wall in the tower body (12), a plurality of transverse rods (10) are fixed between the two first straight racks (1) together, a second straight rack (13) is fixed on the other end side wall in the tower body (12), bearing grooves (2) are formed in opposite side walls in the tower body (12), bearing plates (51) are installed in the two bearing grooves (2) together, a positioning device is arranged at the lower end of each bearing plate (51), a vehicle body structure is arranged at the upper end of each bearing plate (51), a second fixing plate (19) is arranged in the vehicle body structure, a direction changing device is arranged on one side of each second fixing plate (19), a worm (30) is arranged on each direction changing device, a transmission device is arranged at one end of each worm (30) and is arranged on one side of each second fixing plate (19), two first gears (9) are arranged on each direction changing, two first gears (9) are respectively meshed with two first straight racks (1), two electronic buttons (4) are arranged on the vehicle body structure, a second gear (16) is arranged on the vehicle body structure, the second gear (16) is meshed with a second straight rack (13), the positioning device comprises sleeves (23) fixed on two sides of the lower end of a bearing plate (51), inserting rods (22) are sleeved in the two sleeves (23) in a sliding mode, a plurality of inserting grooves (11) are arranged on the side wall of one end in a bearing groove (2) at equal intervals, the two inserting rods (22) are respectively corresponding to the two inserting grooves (11), a supporting rod (53) is fixed on one side of the bearing plate (51), the supporting rod (53) is fixed on one side of the lower end of a second fixing plate (19), a first electric telescopic rod (20) is fixed on one side of the lower end of the supporting rod (53), one end of the first electric telescopic rod (20) is rotatably connected with two push rods (21), two push rods (21) are both located between two inserted bars (22), one end of the two push rods (21) is respectively connected to one side of the two inserted bars (22) in a rotating manner, the vehicle body structure comprises a vertical plate (50) fixed to the upper end of a bearing plate (51), the other side of the lower end of a second fixing plate (19) is fixed to the upper end of the vertical plate (50), one side of the upper end of the second fixing plate (19) is fixed with a sleeve (8), a moving rod (5) is sleeved in the sleeve (8) in a sliding manner, one side of the sleeve (8) is provided with a fixing device, a handlebar (3) is installed at the upper end of the moving rod (5), two electronic buttons (4) are both installed on one side of the upper end of the moving rod (5), the other side of the upper end of the second fixing plate (19) is fixed with a vertical rod (17), and a, one side of first fixed plate (15) is equipped with opening (52), and second gear (16) rotate to be connected in opening (52), saddle (14) are installed to the upper end of first fixed plate (15), the deviator is including fixing install bin (28) in second fixed plate (19) one side, install bin (28) and second fixed plate (19) go up to rotate jointly and have cup jointed transmission shaft (27), fixed cover is equipped with two first conical gear (32) on transmission shaft (27), and two first conical gear (32) all are located install bin (28), be fixed with first connecting plate (34) and second connecting plate (40) on the relative lateral wall in install bin (28) respectively, it has dwang (35) to rotate to cup joint on first connecting plate (34), the one end of dwang (35) is rotated and is connected on the one end lateral wall in install bin (28), the other end of dwang (35) is fixed with second bevel gear (33), and second bevel gear (33) and one of them first bevel gear (32) mesh mutually, it cup joints third bevel gear (37) to rotate on second connecting plate (40), third bevel gear (37) and another first bevel gear (32) mesh mutually, one side of third bevel gear (37) is equipped with first recess (38), worm (30) rotate to cup joint on the one end lateral wall of install bin (28), it has cup jointed dead lever (42) to rotate on worm (30), and dead lever (42) rotate to connect on the one end lateral wall in install bin (28), one side of dead lever (42) is equipped with second recess (47), the one end of worm (30) is equipped with shifting chute (46), all be equipped with spout (43) on the relative lateral wall in shifting chute (46), all install slider (45) in two spout (43), the relative one side of two slider (45) is fixed with slide bar (44) jointly, be fixed with second electric telescopic handle (48) on the one end lateral wall in install bin (28), and second electric telescopic handle (48) are located one side of dead lever (42), the one end of second electric telescopic handle (48) is fixed with third connecting plate (49), it has connecting rod (41) to rotate the cover on third connecting plate (49), connecting rod (41) both ends all are fixed with clamp plate (39), and two clamp plates (39) are located and are located between first recess (38) and second recess (47), and the one end of slide bar (44) is fixed in one side of one of them clamp plate (39), through drive belt (36) transmission connection between dead lever (42) and dwang (35), transmission is including setting up worm wheel (31) at the worm (30) other end, the worm (30) is meshed with the worm wheel (31), the worm wheel (31) is fixedly provided with a connecting shaft (24), the connecting shaft (24) is rotatably sleeved on the second fixing plate (19), two ends of the connecting shaft (24) are respectively fixed with a crank (25), one end of each of the two cranks (25) is respectively provided with a pedal (26), the worm (30) is rotatably sleeved on one side of the second fixing plate (19), the fixing device comprises a threaded sleeve (7) penetrating through the sleeve (8), a bolt (6) is screwed in the threaded sleeve (7), one end of the bolt (6) penetrates through the threaded sleeve (7) and extends into the sleeve (8), one end of the bolt (6) is abutted against the moving rod (5), the handlebar (3) and the saddle (14) are both coated with a rubber layer, one side of the upper end of the second fixing plate (19) is fixedly provided with a bearing box (18), a protective cover (29) is installed on one side of the second fixing plate (19), and the worm (30) and the worm wheel (31) are located in the protective cover (29).