CN105752201B - Portable multifunctional express delivery load-and-carry equipment - Google Patents

Abstract

The invention discloses a multifunctional portable express carrier, which comprises a carrying lifting platform (11). One side of the carrying lifting platform (11) is hinged with a pair of folding legs (2), and each folding leg (2) The bottom is provided with a rolling wheel (1), and the other side is provided with a pair of three-star wheels (8), between which a pair of three-star wheels (8) is provided with a climbing device (7) fixed on the lifting platform (11). The top of the carrying lifting platform (11) is provided with a push handle (10), and the upper side of the carrying lifting platform (11) is provided with a push-pull handle (4). The invention can carry out ladder climbing and lifting, which is convenient to use and improves efficiency.

Description

Multifunctional Portable Express Carrier

technical field

The invention relates to a means of transportation, in particular to a multifunctional portable express carrier.

Background technique

Express transportation is one of the indispensable links in the express industry, and transportation cannot be separated from the means of transportation - express delivery vehicles. Traditional delivery vehicles take up a lot of space, are inconvenient to carry, and have poor power-assisted effects, which cannot reduce the labor intensity of couriers. At present, most of the domestic and foreign markets use traditional delivery vehicles, which at most have the function of climbing ladders or lifting. .

Contents of the invention

The object of the present invention is to provide a multifunctional portable express carrier. The invention can carry out ladder climbing and lifting, which is convenient to use and improves efficiency.

The technical solution of the present invention: a multifunctional portable express carrier, characterized in that it includes a carrying lifting platform, one side of the carrying lifting platform is hinged with a pair of folding feet, each folding foot is provided with a rolling wheel below, and the other side There is a pair of three-star wheels, and a ladder device fixed on the carrying lifting platform is arranged between the pair of three-star wheels. The top of the carrying lifting platform is provided with a pressing handle, and the upper side of the carrying lifting platform is provided with a push-pull handle.

In the aforementioned multifunctional portable express delivery carrier, the carrying lifting platform includes a frame, and a power box is provided at the bottom of the frame. The power box is connected to a gear, and the gear is connected to a large bevel gear. The bevel gear is connected to the driving sprocket through the reduction box, and the driving sprocket is connected to the driven sprocket through the chain. The driven sprocket is fixed on the frame through the load-bearing rod. The frame is hinged with a folding platform, and the other side of the chain is provided with a tensioning mechanism; the platform supporting frame is provided with rollers, and the load-bearing rod is provided with a square bar for installing the rollers.

In the aforementioned multifunctional portable express carrier, the tensioning mechanism includes an upper support rod and a lower support rod, the lower end of the upper support rod is provided with an upper support sprocket, and the upper end of the lower support rod is provided with a lower support sprocket. The upper support sprocket and the lower support sprocket are respectively arranged in a staggered manner on both sides of the chain.

In the aforementioned multi-functional portable express carrier, the frame includes a plurality of vertically arranged telescopic round rods, which are connected by connectors; The square rod is a telescopic square rod.

In the aforementioned multifunctional portable express carrier, the telescopic round rod includes a small round tube, the outside of the small round tube is covered with a large round tube, the side walls of the small round tube and the large round tube are provided with through holes, and the small round tube is provided with a through hole. The upper end of the round tube is provided with a pressure rod through a spring, and the lower end of the pressure rod is set in the small round tube, and is connected with a nylon pressure rod. The lower end of the nylon pressure rod is provided with a round hole, and a V-shaped ball spring is arranged below the round hole. The V-shaped ball spring piece is fixed on the connector through the shrapnel support rod, and the connector is fixed in the small round tube. The end of the V-shaped ball spring piece is matched with the through hole; the upper end of the pressure rod is provided with Depressing bar key; the spring is located at the lower part of the depressing bar key.

In the aforementioned multi-functional portable express carrier, the small round tube is provided with an upper round rod connector via a set bolt, and the upper round tube is provided with a lower circle stopper via a quick release part, and the upper round rod The connecting piece is fixed with an anti-rotation rod, and the anti-rotation rod is interspersed in the lower circle limiter; the lower end of the anti-rotation rod is provided with a positioning nut.

In the aforementioned multifunctional portable express carrier, the power box includes a DC motor a, a shaft coupling and a solid sub-shaft connected in sequence, the outer side of the solid sub-shaft is covered with a hollow female shaft with a keyway, and one end of the hollow female shaft There is a sliding gear, the solid sub-shaft and the sliding gear are connected by a long key, the other end of the hollow female shaft is provided with a shift wheel, the shift wheel is provided with a jack, and the shift wheel is provided with a U-shaped lever through a rolling bearing , the U-shaped lever is provided with a toggle mother lever, the toggle lever is set with a toggle sub-rod, the upper end of the toggle sub-rod is provided with a return spring, and the lower end is matched with the jack; the two sides of the hollow mother shaft are respectively A first gear set and a second gear set cooperating with the sliding gear are provided.

In the aforementioned multifunctional portable express carrier, the solid sub-shaft is fixed on the bearing housing; the solid sub-shaft is provided with a limit flange via a linear bearing.

In the aforesaid multifunctional portable express delivery carrier, the ladder climbing device includes a box body, and the box body is provided with a DC motor b, a coupling a and a main shaft connected in sequence, the main shaft is connected with a gear a via a key, and the gear a meshes with a Gear b, gear b is connected with a bevel gear, the bevel gear is connected with a worm gear box through coupling b, the worm gear box is connected with a driving shaft, and the driving shaft is connected with a driven shaft with a timing pulley through a synchronous belt; The two ends of the driving shaft are respectively connected with a driving crank, and the two ends of the driven shaft are respectively connected with a driven crank, and the driving crank is hinged with a long rod for supporting the ground, and the upper end of the long rod for supporting the ground is hingedly connected with the driven crank. The lower end of the ground support pole is provided with ground support feet; the main shaft is fixed through a bearing seat.

In the aforementioned multifunctional portable express carrier, the two sides of the worm gear box are provided with fixing plates, and the driving shaft and the driven shaft are fixed on the fixing plates.

Compared with the prior art, the present invention carries the express objects through the lifting platform, which can raise and lower the objects, and can also climb the ladder through the rolling wheel, the three-star wheel and the ladder device, which is convenient to go upstairs and carry, and is easy to use , save time and effort, and greatly improve the carrying efficiency.

In addition, the power box does not need to be close to the box body for gear shifting, which is safe to use, simple and quick to operate, improves efficiency, has a compact and simple structure, and lower production cost. The invention realizes fast power switching of different routes of a power source, the mechanism occupies less space, and the space utilization rate is improved. The structure is simple and ingenious, easy to manufacture and strong in practicability.

The telescopic round rod adopts a simple and purely mechanical mechanism. The two round tubes can be stretched and stretched once the pressure rod is pressed. Retractable can be reset. The utility model has the advantages of simple operation, ingenious mechanism and good realization effect. The invention uses V-shaped shrapnel with a large bearing capacity, and the mechanism realizes the anti-rotation and accurate reset of the circular tube fit, linkage control, simple structure and durability.

The ladder climbing device starts to rotate under the power supply of lithium battery through DC motor b, and drives the main shaft to rotate through the connection of the coupling. The connection with the worm gear box is realized, and the worm gear box drives the driving shaft and the driven shaft, and then the ground pole moves through the driven crank and the driving crank. The invention can conveniently assist the courier to carry heavy and large express items up and down the stairs, and has the advantages of simple structure, convenient use and time-saving and labor-saving.

The carrying lifting platform drives the lower gear to move through the power box. The gear is connected with the large bevel gear, and the large bevel gear is connected with the small bevel gear to change the direction. The small bevel gear is connected with the reduction box (worm gear box) to play the role of Deceleration increases torque, and makes the lifting platform have a self-locking function. The output shaft of the worm gear is connected to the driving sprocket, and the driving chain and the driven chain are connected through the chain. When the driving chain below moves, it also drives the movement of the entire chain. The folding table is connected to the chain through the table support frame, and the rollers on the table support frame play the role of limiting and guiding in the track acted by the square rod, thus driving the movement of the entire front folding table Moving up and down, the tension of the chain is provided by the upper support sprocket and the lower support sprocket at the rear of the chain, so that the operator can independently complete the whole process from lifting, cleaning to leveling, and it is convenient to lift heavy objects , Use worry-saving and labor-saving. It has the characteristics of stable and reliable lifting and convenient operation. In addition, the present invention can be extended, stretched and folded, which is convenient for storage, reduces storage space, and is easy to carry.

The present invention also has the following effects:

1. After storage, the volume of the carrier is reduced, which is convenient for transportation and storage.

2. When the carrier is unfolded, the height and speed of the lifting platform can be adjusted by itself to play a role in assisting.

3. When the carrier is unfolded, it can be used to carry all kinds of express delivery on flat ground.

4. When the carrier is unfolded, it can save and realize the function of climbing stairs during the transportation process, and assist the courier to carry large and heavy parcels.

5. The extra space inside can place some items used by the courier, thus providing convenience for users to a great extent.

6. Provides a positioning and clamping mechanism that can solve the problem of fixing two pipe fittings telescopically interlocking.

7. Provide a mechanism that can solve the problem of keeping the chain tensioned all the time in the telescopic carrier.

8. The structure of the whole machine body of the carrier is reasonable and ingenious, the force is uniform, and the finishing performance is stable.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a structural schematic diagram of the carrying lifting platform;

Fig. 3 is the top view of Fig. 2;

Fig. 4 is the structural representation of power box;

Figure 5 is a top view of Figure 4;

Fig. 6 is a structural schematic diagram of a telescopic round rod;

Fig. 7 is a sectional view of the telescopic round rod;

Figure 8 is a schematic diagram of the storage of the telescopic round rod;

Fig. 9 is a schematic structural view of the ladder device;

Figure 10 is a top view of Figure 9;

Fig. 11 is a side view of the worm gear box;

Fig. 12 is a storage diagram of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but not as a basis for limiting the present invention.

Example. The multi-functional portable express carrier is constituted as shown in Figure 1, and includes a carrying lifting platform 11. A pair of folding legs 2 are hinged on one side of the carrying lifting platform 11, and a rolling wheel 1 is provided below each folding leg 2. One side is provided with a pair of three-star wheels 8, between which a pair of three-star wheels 8 is provided with a climbing device 7 fixed on the carrying lifting platform 11, the top of the carrying lifting platform 11 is provided with a pressing handle 10, and the upper side of the carrying lifting platform 11 There is a push-pull handle 4. The ladder climbing device 7 is connected with a lithium battery 9 , and the lithium battery 9 is fixed on the bottom of the lifting platform 11 . The push-pull handle 4 is provided with a rotary switch 5 . A storage item frame 3 may also be provided in the carrying and lifting platform 11 .

Described carrying lifting platform 11, constitutes as shown in Figure 2 and 3, comprises frame, and frame bottom is provided with power box 405, and power box 405 is connected with gear 407, and gear 407 is connected with large bevel gear 408, and large bevel gear 408 The small bevel gear 409 is meshed, the small bevel gear 409 is connected with the driving sprocket 411 through the reduction box 410, the driving sprocket 411 is connected with the driven sprocket 414 through the chain 413, and the driven sprocket 414 is fixed on the frame through the load-bearing rod 415 On one side of the chain 413 is provided with a platen support frame 402, the platen support frame 402 is hinged with a folded platen 401, and the other side of the chain 413 is provided with a tensioning mechanism; the platen support frame 402 is provided with For the roller 404, a square rod 422 for installing the roller 404 is arranged on the bearing rod 415.

Described tension mechanism comprises upper strut 417 and lower strut 420, and the lower end of upper strut 417 is provided with upper support sprocket 418, and the upper end of lower strut 420 is provided with lower support sprocket 419, and described last support sprocket 418 and the understay sprockets 419 are respectively arranged in a staggered manner on both sides of the chain 413 .

The frame includes a plurality of vertically arranged telescopic round rods 423, which are connected via connectors 416 between the plurality of telescopic round rods 423; 422 is a telescopic square rod.

The working principle is as follows: the power box drives the lower gear to move, the gear is connected with the large bevel gear, and the large bevel gear is connected with the small bevel gear to change the direction. To decelerate and increase torque, and make the lifting platform have a self-locking function, the output shaft of the worm gear is connected to the driving sprocket, and the driving sprocket and the driven sprocket are connected by a chain. When the driving sprocket below moves, it also drives The movement of the entire chain, and the turning table is connected to the chain through the table support frame, and the rollers on the table support frame play the role of limiting and guiding in the track acted by the square rod, thus driving the entire front turning The up and down movement of the folding platen and the tensioning of the chain are provided by the upper support sprocket on the upper strut and the lower support sprocket on the lower strut located behind the chain.

When it is necessary to store and store, the positioning of the round rods is canceled, so the four round rods drawn above and the two square rods used as rails move downward under the action of gravity. During the downward movement , the upper support rod and the upper support sprocket move downward at the same time, while the lower support sprocket and the lower support remain unchanged, so the tension of the chain is always maintained when the total length of the chain remains unchanged

The telescopic round rod 423 is constituted as shown in Figure 6-8, comprising a small round tube 103, the outside of the small round tube 103 is covered with a large round tube 109, and the side walls of the small round tube 103 and the large round tube 109 are provided with Through hole 117, the upper end of the small round tube 103 is provided with a compression rod 101 through the spring 102, the lower end of the compression rod 101 is arranged in the small round tube 103, and is connected with a nylon compression rod 104, and the lower end of the nylon compression rod 104 is provided with a round hole, the bottom of the hole is provided with a V-shaped ball spring piece 106, the V-shaped ball spring piece 106 is fixed on the connector 108 through the shrapnel support rod 107, and the connector 108 is fixed in the small round tube 103. The end of the V-shaped ball spring piece 106 fits with the through hole 117; the upper end of the pressing bar 101 is provided with a pressing bar key 110;

The small round tube 103 is provided with an upper round rod connector 112 via a tightening bolt 111, and the upper round rod connector 112 is fixed with a lower round stopper 115 via a quick release part 114 on the large round tube 109. An anti-rotation rod 113 is provided, and the anti-rotation rod 113 is interspersed in the lower circular stopper 115; the lower end of the anti-rotation rod 113 is provided with a positioning nut 116 .

The principle of use is as follows: when it needs to be stretched, press the pressure rod manually, and the pressure rod overcomes the spring force under the condition of force to push the nylon pressure rod to move down the round tube. There is a set diameter inside the nylon pressure rod. In the case of the continuous downward movement of the pressure rod, the inner round hole touches both sides of the V-shaped ball spring, and the shrapnel support rod at the bottom of the round rod supports the top of the V-shaped ball spring. Under the action of the force of the ball spring sheet, the ball originally stuck between the two rods shrinks inwardly, and under the condition of the gravity of the round rod itself, the relative movement of the two rods realizes the contraction.

When it needs to be pulled apart, due to the restoring force of the spring plus the pulling force on the pressure rod by the hand, the nylon pressure rod will disengage the V-shaped ball spring piece, and the spring piece will recover under the action of its own elastic force, and the round rod with a smaller diameter will continue to move upward. Movement, under the control of a straight line determined by the two points of the upper and lower round rods and the anti-rotation rod, moving upward along a straight line will not cause rotation, will not cause the mother and child rods to stagger, and cause the ball not to enter the hole. , The design of the positioning nut ensures the control of the stretching distance, and will not cause the ball to miss the hole slot due to the fast stretching speed. After the ball enters the corresponding hole, it is locked with quick-release special parts to increase the load-bearing capacity and reduce the shaking caused by the fit gap between the two round pipes.

The power box 405 is constituted as shown in Figures 4 and 5, including a DC motor a201, a shaft coupling 202 and a solid sub-shaft 204 connected in sequence, and the outer side of the solid sub-shaft 204 is covered with a hollow female shaft 213 with a keyway. One end of the hollow female shaft 213 is provided with a sliding gear 216, the solid sub-shaft 204 and the sliding gear 216 are connected by a long key 214, the other end of the hollow female shaft 213 is provided with a shift wheel 211, and the shift wheel 211 is provided with a socket , the shift wheel 211 is provided with a U-shaped lever 210 through a rolling bearing 212, and the U-shaped lever 210 is provided with a toggle mother lever 207, and the toggle mother lever 207 is set with a toggle sub-rod 208, and a toggle sub-rod 208 The upper end of the hollow shaft 213 is provided with a return spring 209, and the lower end is matched with the jack; the two sides of the hollow female shaft 213 are respectively provided with a first gear set 215 and a second gear set 217 that cooperate with the sliding gear 216. The solid sub-shaft 204 is fixed on the bearing housing 203; the solid sub-shaft 204 is provided with a limit flange 205 via a linear bearing 206.

In the present invention, the DC motor is used as the output source, the coupling is connected to the solid sub-shaft, and the sliding gear is driven to move under the connection of the long key, so that through the cooperation of the gears, the gear set in it is driven to move, and when it is necessary to shift gears, Manually press the sub-rod, and the end of the sub-rod is inserted into the hole of the shift wheel to realize the translation of the female shift lever after connection, and add a certain rotation to make the sliding gear mesh with the other gear set, so as to realize the different ways of power quickly. Switch output. The toggle female rod of the present invention is connected with the U-shaped driving rod, the rolling bearing of the U-shaped driving rod is connected with the hollow female shaft with key grooves, the shift wheel is connected with the hollow female shaft with key grooves via pins, and when the motor moves, the sliding gear is driven The movement is carried out, and the rotation of the hollow female shaft with key groove is driven by the connection of the long key. Since the U-shaped lever is connected to the female shaft through a rolling bearing, and the position of the lever is limited, only the shift wheel rotates with the shaft, and the The entire lever and the U-shaped lever remain relatively static, and the sub-rod can automatically reset under the action of the spring force after use.

The invention does not need to be close to the box for gear shifting, is safe to use, is simple and quick to operate, improves efficiency, has a compact and simple structure, and has low production cost. The invention realizes fast power switching of different routes of a power source, the mechanism occupies less space, and the space utilization rate is improved. The structure is simple and ingenious, easy to manufacture and strong in practicability.

Described ladder climbing device 7, constitutes as shown in Figure 9-11, comprises box body 321, is provided with DC motor b301, shaft coupling a302 and main shaft 304 connected in sequence in the box body 321, is connected with gear via key 306 on the main shaft 304 a305, gear a305 meshes with gear b307, gear b307 is connected with bevel gear 308, bevel gear 308 is connected with worm gear box 317 through coupling b309, pad 318 is arranged at the bottom of worm gear box 317, and worm gear box 317 is connected with active shaft, the driving shaft is connected with a driven shaft 312 with a synchronous pulley 310 through a synchronous belt 311; Crank 314, the active crank 316 is hinged with a ground support rod 319, the upper end of the ground support rod 319 is hingedly connected with the driven crank 314, and the lower end of the ground support rod 319 is provided with a ground support foot 320; the main shaft 304 passes Bearing seat 303 is fixed. Both sides of the worm gear box 317 are provided with fixing plates 315 on which the driving shaft and the driven shaft 312 are fixed.

The use is as follows: the DC motor starts to rotate under the power supply of the lithium battery, and the connection of the coupling drives the main shaft to rotate. Connection to worm gear box. The worm box rotates, and the worm box has two functions: first, to achieve a large proportion of deceleration and torque increase; second, the rotation direction is determined by the input end, forming a self-locking function, driving the drive shaft connected to it, and driving The two ends of the shaft are connected by keyways to the driving crank distributed at both symmetrical ends, the driving crank and the ground support rod, and the ground support rod and the driven crank are all connected by pins to ensure their rotation. The driven crank is also connected with the keyway and distributed on the driven shaft at both symmetrical ends. The driving shaft and the driven shaft are positioned in the box with a fixed plate. The connection method can realize the movement of the driving shaft and the driven shaft in the same direction, and avoid the random change of the rotation direction of the crank when it is at the dead point.

The movement of the driven crank, the driving crank, and the ground support rod is a four-bar linkage mechanism. The drive shaft drives the driving crank to drive the ground support rod and the driven crank to realize a ladder climbing movement. When the ground support rod and the support After the feet touch the bottom, the whole machine moves in the opposite direction of the connecting rod curve with the feet as the fulcrum.

When the present invention does not climb stairs, or when it is on flat ground, it can also drive the crank, the ground support rod and the lowest point of the ground support to be higher than the ground, so as not to interfere with the movement on the flat ground.

When going up and down the stairs, the operator passes through. When the wheelchair is tilted to a certain angle, press the button for going upstairs or downstairs, and the drive motor drives the worm gear box, which in turn drives the four-bar linkage mechanism in the stair climbing drive unit. At this time, the ground support feet installed at the bottom of the two four-bar linkages serve as the supporting point of the entire stair climbing device, so that the frame can rise to or descend to adjacent stairs.

After being folded and stored, it is shown in Figure 12.

The principle of use of the present invention is as follows: the first step is to arrange from the unfolded state to the stored state. First of all, it is necessary to lower the folding table to the lowest point. The motor drives the bevel gear and the worm gear box (reduction box) above the power box, thereby driving the up and down movement of the chain and driving the movement of the folding table; Fold the tabletop inward, and buckle the buckle; push the two connecting parts in the middle of the foot support under the folded table top to the inside with your hand, and the folded foot support originally supported by the connecting rod is turned inward. Fold over, the scroll wheel rolls to the inside, and buckle the buckle; some common items of the courier can be placed in the storage box; the next step is the expansion and contraction of the whole body, first open the four round tubes at the top and the four tubes at the bottom The quick-release connectors between the round tubes, and then press the spring pressure rod at the top of the whole machine, the pressure rod will drive the small round tube in the tube, and shrink the V-shaped spring piece at the hole of the corresponding round tube inwards, so that Make the round tube and square tube nested inside fall down under the action of gravity, and the upper support rod and the sprocket fall synchronously to keep the tension of the chain. After falling to the lowest point, close the quick release connector. Keep it tight; finally, by sliding the gear to the gear of the ladder, adjust the rotation of the motor to adjust the ground support rod of the ladder device to the position farthest from the ground, keeping it from touching the bottom surface, and completing the storage of the whole machine.

In the second step, the stored carrier is unfolded into the use state. Refer to the process of the previous step and reverse it. First, the overall fuselage is stretched and unfolded. With the help of spring force, the pressing rod will no longer cause the V-shaped spring piece to produce direction. The deformation inside, the V-shaped spring piece returns to the original state, pull up the four phase sleeved round tubes, and there are two limit and anti-rotation devices on the outside of the upper and lower round rods. The anti-rotation value is to limit the two-phase sleeve round rods in the Rotate during the rising process to prevent the ball of the V-shaped spring sheet from falling into the corresponding hole. The limit refers to pulling the upper round tube to the corresponding position to ensure that the ball enters the hole of the two rods. The rod and the sprocket rise synchronously to ensure the tension of the chain; then open the foot support, the roller rolls to the outside, the two connecting parts of the connecting rod foot support are pushed outward by hand, and the foot support is fixed; the buckle Open and put down the lifting platform; when the lifting function needs to be used, the sliding gear is shifted to the gear set of the lifting function through the gear shifting device, and the chain is lifted, so that the lifting platform is driven by the chain to go up and down; when it is necessary to use the ladder function At this time, the sliding gear is dialed to the gear set of the ladder function, thereby driving the four connecting rods to realize the ladder movement after supporting the ground.

Claims (1)

1. portable multifunctional express delivery load-and-carry equipment, it is characterised in that：Including carrying hoistable platform (11), carrying hoistable platform (11) Side be hinged with it is a pair of fold heel brace (2), the lower section of each fold heel brace (2) is equipped with scroll wheel (1), and opposite side is equipped with a pair Tri-star wheel (8) is equipped with the climbing ladder apparatus (7) being fixed on carrying hoistable platform (11), the carrying between a pair of of tri-star wheel (8) Squeeze grip (10) is equipped at the top of hoistable platform (11), carrying hoistable platform (11) upper lateral part is equipped with push and pull bar (4)；

The carrying hoistable platform (11) includes rack, and bottom of the frame is equipped with headstock (405), and headstock (405) connection is with teeth It takes turns (407), gear (407) is connected with bevel gear wheel (408), and bevel gear wheel (408) is engaged with bevel pinion (409), small bevel gear Wheel (409) is connected with drive sprocket (411) through reduction box (410), and drive sprocket (411) is connected with driven chain through chain (413) It takes turns (414), driven sprocket (414) is fixed on through bearing bar (415) in rack, and the side of chain (413) is equipped with bedplate supporting rack (402), bedplate supporting rack (402) is hinged with fold platen (401), and the opposite side of chain (413) is equipped with strainer；Described Plate bracing frame (402) is equipped with idler wheel (404), and the bearing bar (415) is equipped with the square bar for installing idler wheel (404) (422)；The strainer includes upper rack posts (417) and lower fulcrum bar (420), and the lower end of upper rack posts (417) is equipped with upper support sprocket wheel (418), the upper end of lower fulcrum bar (420) is equipped with lower support sprocket wheel (419), and the upper support sprocket wheel (418) and lower support sprocket wheel (419) are respectively It is staggered in chain (413) both sides；The rack includes the more flexible round bars (423) being vertically arranged, more flexible round bars (423) it is connected between through connector (416)；The square bar (422) is fixed through fixing piece (421) and flexible round bar (423), described Square bar (422) is flexible square bar；The flexible round bar (423) includes small pipe (103), and great circle is cased on the outside of small pipe (103) It manages (109), is equipped with through-hole (117) on the side wall of the small pipe (103) and big pipe (109), on the small pipe (103) Through spring (102) equipped with compression bar (101), the lower end of compression bar (101) is arranged in small pipe (103), and be connected with nylon pressure at end Stick (104), the lower end of nylon pressure bar (104) are equipped with circular hole, and the lower section of the circular hole is equipped with V-type ball spring leaf (106), V-type Ball spring leaf (106) is fixed on through shrapnel supporting rod (107) on connector (108), and connector (108) is fixed on small pipe (103) in, end and the through-hole (117) of the V-type ball spring leaf (106) coordinate；The upper end of the compression bar (101) is equipped with pressure Bar button (110)；The spring (102) is positioned at the lower part of compression bar button (110)；

The climbing ladder apparatus (7) includes babinet (321), and sequentially connected direct current generator b (301), shaft coupling are equipped in babinet (321) Device a (302) and main shaft (304) are connected with gear a (305) on main shaft (304) through key (306), and gear a (305) is engaged with gear B (307), gear b (307) are connected with bevel gear (308), and bevel gear (308) is connected with turbine and worm case through shaft coupling b (309) (317), turbine and worm case (317) is connected with driving shaft (313), and driving shaft (313) synchronized band (311) is connected with synchronization The driven shaft (312) of belt wheel (310)；The both ends of the driving shaft (313) are connected separately with driving crank (316), described driven The both ends of axis (312) are connected separately with driving crank (314), and the driving crank (316) is hinged with support ground stock (319), support The upper end of ground stock (319) is articulated and connected with driving crank (314), and the lower end of support ground stock (319) is equipped with support lower margin (320)； The main shaft (304) is fixed by bearing block (303)；Connect on the small pipe (103) through tight fixed bolt (111) equipped with upper round bar Fitting (112), through Fast detachable unit (114) equipped with lower round locating part (115), the upper round bar connector on the big pipe (109) (112) anti-bull stick (113) is fixed with, anti-bull stick (113) is interspersed in lower round locating part (115)；Under the anti-bull stick (113) End is equipped with location nut (116)；Turbine and worm case (317) both sides are equipped with fixed plate (315), are fixed in fixed plate (315) Driving shaft (313) and driven shaft (312).