CN209757221U - Electric loading stair climbing machine - Google Patents

Abstract

The utility model discloses an electric object-carrying stair climbing machine, which comprises a frame, a handle component, wheels, a power supply device, a rotary driver, a stair climbing actuating mechanism and an auxiliary wheel supporting mechanism, wherein the handle component is arranged at the upper end of the frame, the wheels are horizontally pivoted at the lower end of the frame, and the power supply device is detachably arranged on the frame; the rotary driver is fixed on the frame and electrically connected to the power supply end of the power supply device; the stair climbing machine executing mechanism is arranged at the lower end of the frame and is in transmission connection with the output end of the rotary driver; the auxiliary wheel supporting mechanism comprises a supporting wheel component and a locking component, the supporting wheel component is rotatably arranged on the frame, and the supporting wheel component and the wheels are both positioned on the front side of the frame; the supporting wheel component is provided with a folding position folded on the frame and a supporting position unfolded on the frame, the locking component is related between the frame and the supporting wheel component, and the locking component can selectively lock the supporting wheel component at the folding position or the supporting position. Simple structure, service function is diversified.

Description

Electric loading stair climbing machine

Technical Field

The utility model relates to a transport mechanical equipment's technical field especially relates to an electronic thing that carries climbs building machine.

Background

at present, to the building that does not install the elevator, the goods still need adopt artifical transport along stair, when the goods is heavier or the volume is great, needs many people to assist just can transport, because the space of stairwell is limited, and it is inconvenient that many people coordinate during the transport, seriously influences handling efficiency, and takes place the accident easily. With the development of economy and the progress of society, many novel devices mainly saving manpower appear in the goods transportation industry, and one of the novel devices is an electric stair climbing machine.

However, the existing electric stair climbing machine is complex in structure, single in use function and poor in adaptability, and when climbing stairs or walking on flat ground, a user is required to hold the electric stair climbing machine to walk obliquely, especially when the user needs to walk on flat ground for a long time, the user always keeps the state of holding the electric stair climbing machine to walk obliquely, so that the user is very hard to use, is very easy to fatigue, is easy to have safety accidents, is very inconvenient to use and cannot meet the use requirements of the user.

therefore, there is a need for an electric stair climbing machine to overcome the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic year thing machine of climbing building, this electronic year thing machine of climbing building have simple structure, service function diversification and climb the building and walk the advantage that the homoenergetic is laborsaving facilitates the use on level land at stair.

in order to achieve the above object, the utility model provides an electronic year thing machine of climbing stairs, include:

A frame;

The handle assembly is arranged at the upper end of the frame;

The wheels are horizontally pivoted at the lower end of the frame;

The power supply device is detachably arranged on the frame;

The rotary driver is fixed on the frame and electrically connected to the power supply end of the power supply device;

The stair climbing machine executing mechanism is arranged at the lower end of the frame and is in transmission connection with the output end of the rotary driver; and

The auxiliary wheel supporting mechanism comprises a supporting wheel assembly and a locking assembly, the supporting wheel assembly is rotatably arranged on the frame, and the supporting wheel assembly and the wheels are both positioned on the front side of the frame; the supporting wheel component is provided with a folding position for folding the frame and a supporting position for unfolding the frame, the locking component is associated between the frame and the supporting wheel component, and the locking component can selectively lock the supporting wheel component at the folding position or the supporting position.

Preferably, a horizontally arranged unfolding and folding fixing rod is fixedly arranged on the frame, and the supporting wheel assembly is rotatably arranged on the unfolding and folding fixing rod.

preferably, the supporting wheel assembly comprises a supporting frame and a caster, the supporting frame is rotatably arranged on the unfolding and folding fixing rod, and the caster is arranged on the supporting frame; the unfolding and folding fixing rod is provided with a folding locking part and an unfolding locking part which are perpendicular to each other, the locking assembly is arranged on the support frame, and the locking assembly can be selectively clamped and locked in the folding locking part or the unfolding locking part; when the locking component is clamped and locked on the folding locking part, the support frame is positioned at the folding position; when the locking component is clamped and locked on the unfolding locking part, the supporting frame is located at the unfolding position.

Preferably, the folding locking part includes a first folding locking groove opened on the unfolding and folding fixing rod, the unfolding locking part includes a first unfolding locking groove opened on the unfolding and folding fixing rod, and the first folding locking groove and the first unfolding locking groove are located in the same circumferential direction; the locking assembly comprises a first locking piece and a first elastic piece, the first locking piece slides on the supporting frame along the direction vertical to the unfolding and folding fixed rod, the first elastic piece is abutted between the first locking piece and the supporting frame, and the first elastic piece constantly drives the first locking piece to move towards the direction close to the unfolding and folding fixed rod; the first locking member can be selectively clamped and locked in the first folding locking groove or the first unfolding locking groove.

Preferably, the folding locking portion further includes a second folding locking groove provided on the unfolding and folding fixing rod and spaced from the first folding locking groove, the unfolding locking portion further includes a second unfolding locking groove provided on the unfolding and folding fixing rod, and the second folding locking groove and the second unfolding locking groove are located in the same circumferential direction; the locking assembly further comprises a second locking piece and a second elastic piece, the second locking piece slides on the supporting frame along the direction perpendicular to the unfolding and folding fixing rod, the second elastic piece abuts against the space between the second locking piece and the supporting frame, and the second elastic piece constantly drives the second locking piece to move towards the direction close to the unfolding and folding fixing rod; the second locking piece can be selectively clamped and locked in the second folding locking groove or the second unfolding locking groove.

Preferably, the supporting frame comprises a first supporting rod, a second supporting rod and a connecting rod, the first supporting rod and the second supporting rod are vertically pivoted on the unfolding and folding fixing rod, and the connecting rod is vertically and fixedly connected between the first supporting rod and the second supporting rod; a first accommodating groove is formed in one end, close to the unfolding and folding fixing rod, of the first supporting rod, the first locking piece slides in the first accommodating groove, and the first elastic piece abuts between the first locking piece and the groove bottom of the first accommodating groove; a second accommodating groove is formed in one end, close to the unfolding and folding fixing rod, of the second supporting rod, the second locking piece slides in the second accommodating groove, and the second elastic piece abuts between the second locking piece and the bottom of the second accommodating groove; the locking assembly further comprises an operating rod, and the operating rod is vertically and fixedly connected between the first locking piece and the second locking piece; the first support rod is provided with a first avoidance elongated hole communicated with the first accommodating groove, the second support rod is provided with a second avoidance elongated hole communicated with the second accommodating groove, and the operating rod is arranged in the first avoidance elongated hole and the second avoidance elongated hole in a penetrating manner in a clearance manner; the first supporting rod is far away from one end of the unfolding and folding fixing rod and the second supporting rod is far away from one end of the unfolding and folding fixing rod, and the trundles are arranged at the two ends of the unfolding and folding fixing rod.

Preferably, the handle assembly is rotatably adjustable and arranged at the upper end of the frame.

Preferably, the electric object-carrying stair climbing machine further comprises a fixed connection frame, wherein the fixed connection frame comprises a first fixed connection seat, a fixed connection pipe and a second fixed connection seat, the first fixed connection seat is fixed on the left side of the upper end of the frame, the second fixed connection seat is fixed on the right side of the upper end of the frame, and the fixed connection pipe is horizontally and fixedly connected between the first fixed connection seat and the second fixed connection seat.

Preferably, the handle assembly comprises a main handle, a first rotating connecting seat, a second rotating connecting seat, a locking rod and a screwing locking handle, wherein the first rotating connecting seat is fixed at the left end of the main handle, and the second rotating connecting seat is fixed at the right end of the main handle; the locking rod is horizontally and sequentially arranged in the first fixed connecting seat, the fixed connecting pipe and the second fixed connecting seat in a penetrating manner from left to right in a clearance mode, the first rotating connecting seat is fixed at the left end of the locking rod, the second rotating connecting seat is sleeved at the right end of the locking rod in a clearance mode, and the screwing lock handle is in threaded connection with the right end of the locking rod; the first fixed connecting seat, the fixed connecting pipe and the second fixed connecting seat are positioned between the first rotating connecting seat and the second rotating connecting seat, and the second rotating connecting seat is positioned between the second fixed connecting seat and the screwing locking handle; a plurality of first positioning clamping parts distributed circumferentially around the locking rod are formed on the right side of the first rotating connecting seat, a plurality of second positioning clamping parts distributed circumferentially around the locking rod are formed on the left side of the first fixing connecting seat, and the first positioning clamping parts and the second positioning clamping parts can be detachably clamped and positioned to be matched with each other; the left side of the second rotating connecting seat is provided with a plurality of third positioning clamping parts which are circumferentially distributed around the locking rod, the right side of the second fixed connecting seat is provided with a plurality of fourth positioning clamping parts which are circumferentially distributed around the locking rod, and the third positioning clamping parts and the fourth positioning clamping parts can be clamped and positioned in a detachable way.

Preferably, one of the first positioning and engaging portion and the second positioning and engaging portion is a first spherical protrusion, and the other of the first positioning and engaging portion and the second positioning and engaging portion is a first spherical groove detachably engaged with the first spherical protrusion; one of the third positioning and clamping part and the fourth positioning and clamping part is a second spherical protrusion, and the other of the third positioning and clamping part and the fourth positioning and clamping part is a second spherical groove which is detachably clamped, positioned and matched with the second spherical protrusion.

Preferably, the stair climbing actuator comprises a pivoting mounting seat, a rotating shaft, a first rotating arm, a second rotating arm, a first positioning sleeve, a second positioning sleeve, a locking screw, a first blocking piece, a second blocking piece, a first nut and a second nut, wherein the pivoting mounting seat is fixed on the front side of the lower end of the frame, the rotating shaft is horizontally pivoted on the pivoting mounting seat, and the rotating shaft is connected to the output end of the rotary driver in a transmission manner; the first rotating arm is positioned and sleeved at the left end of the rotating shaft, and the second rotating arm is positioned and sleeved at the right end of the rotating shaft; the first positioning sleeve and the second positioning sleeve are sleeved on the rotating shaft, the first positioning sleeve is positioned between the right side of the first rotating arm and the left side of the pivoting mounting seat, and the second positioning sleeve is positioned between the left side of the second rotating arm and the right side of the pivoting mounting seat; the locking screw is horizontally arranged in the rotating shaft in a penetrating mode, the first blocking piece is sleeved at the left end of the locking screw, the first nut is connected to the left end of the locking screw in a threaded mode, and the first blocking piece is located between the left side of the rotating shaft and the right side of the first nut; the second retaining plate is sleeved at the right end of the locking screw rod, the second nut is in threaded connection with the right end of the locking screw rod, and the second retaining plate is located between the right side of the rotating shaft and the left side of the second nut.

preferably, a first positioning convex column is formed at the left end of the rotating shaft, a first positioning hole is formed on the first rotating arm, and the first positioning hole is positioned and sleeved on the first positioning convex column; the right end of the rotating shaft is provided with a second positioning convex column, a second positioning hole is formed in the second rotating arm, and the second positioning hole is sleeved on the second positioning convex column in a positioning mode.

Preferably, the two ends of the first rotating arm and the two ends of the second rotating arm are both fixedly provided with a fixed wheel.

Preferably, the electric loading stair climbing machine further comprises an illuminating assembly, the illuminating assembly comprises an illuminating lamp and a lampshade, the illuminating lamp is fixedly arranged on the front side of the lower end of the frame, and the lampshade is fixedly covered on the illuminating lamp.

preferably, the electric loading stair climbing machine further comprises a mounting beam and a control panel, the mounting beam is horizontally fixed on the frame, and the mounting beam is located between the auxiliary wheel supporting mechanism and the handle assembly; the control panel is arranged on the mounting beam and is electrically connected to the power supply device, the rotary driver and the illuminating lamp, and a rotating speed adjusting button for controlling the rotating speed of the rotary driver, a steering switching button for controlling the forward and reverse rotation of the rotary driver and an illuminating button for controlling the switch of the illuminating lamp are arranged on the control panel.

preferably, the electric cargo stair climbing machine further comprises an auxiliary handle, the auxiliary handle is fixed on the frame, and the auxiliary handle is located between the auxiliary wheel supporting mechanism and the handle assembly.

Preferably, the electric cargo-carrying stair climbing machine further comprises an unfolding and folding supporting plate and a fixed supporting plate, wherein the unfolding and folding supporting plate is arranged on the back side of the lower end of the frame in an unfolding and folding adjustable manner, and the unfolding and folding supporting plate is provided with a folding position folded on the frame and a supporting position unfolded on the frame; the fixed supporting plate is fixed on the back side of the frame, and the fixed supporting plate is located above the folding and unfolding supporting plate.

Compared with the prior art, the handle component of the electric object-carrying stair climbing machine is arranged at the upper end of the frame, the wheel is horizontally pivoted at the lower end of the frame, and the power supply device is detachably arranged on the frame; the rotary driver is fixed on the frame and electrically connected to the power supply end of the power supply device; the stair climbing machine executing mechanism is arranged at the lower end of the frame and is in transmission connection with the output end of the rotary driver; the auxiliary wheel supporting mechanism comprises a supporting wheel component and a locking component, the supporting wheel component is rotatably arranged on the frame, and the supporting wheel component and the wheels are both positioned on the front side of the frame; the supporting wheel component is provided with a folding position folded on the frame and a supporting position unfolded on the frame, the locking component is related between the frame and the supporting wheel component, and the locking component can selectively lock the supporting wheel component at the folding position or the supporting position. Then when carrying out stair and climbing the building, lock the supporting wheel subassembly in closing through the locking subassembly and close the position, the user grips the handle subassembly and makes the utility model discloses an electronic year thing climbs building machine slope, drives for rotary actuator by the power supply unit power supply and climbs building actuating mechanism and move, can realize the utility model discloses an electronic year thing climbs building machine carries out stair and climbs the building. When walking on the level land, lock in the support position through the locking subassembly with the supporting wheel subassembly, the frame is put to the level, and wheel and supporting wheel subassembly can walk on the level land simultaneously, realize with the utility model discloses an electronic year thing climbs building machine and adjusts to the walking of level on the level land. Not only simple structure, service function is diversified moreover, can realize walking in the slope when stair climb the building, and the level walking is adjusted according to the walking road conditions of difference and is switched over when walking on the level land, has improved adaptability greatly, and the user uses more laborsaving convenience, and the difficult tired appearance prevents the emergence of incident, the user demand that satisfies the user that can be better.

Drawings

Fig. 1 is a perspective view of the electric loading stair climbing machine of the present invention in the stair climbing mode.

Fig. 2 is a perspective view of the electric loading stair climbing machine of the present invention in the translation mode.

Fig. 3 is a schematic combined perspective view of the unfolding/folding fixing rod and the attached wheel supporting mechanism of the electric stair climbing machine.

Fig. 4 is an exploded schematic view of fig. 3.

Fig. 5 is a schematic view of fig. 4 from another perspective.

Fig. 6 is a perspective view of the fixed connection frame and the handle assembly of the electric stair climbing device.

fig. 7 is an exploded schematic view of fig. 6.

Fig. 8 is a schematic view of fig. 7 from another perspective.

fig. 9 is a perspective view of the combination of the rotary actuator and the stair climbing actuator of the electric stair climbing machine.

Fig. 10 is an exploded schematic view of fig. 9.

Fig. 11 is a schematic view of fig. 10 from another perspective.

Detailed Description

Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout.

Referring to fig. 1 to 11, the electric stair climbing device 100 of the present invention includes a frame 10, a handle assembly 20, wheels 30a, a power supply device 30b, a rotary driver 30c, a stair climbing actuator 40 and an auxiliary wheel supporting mechanism 50, wherein the handle assembly 20 is disposed at an upper end of the frame 10, the wheels 30a are horizontally pivoted to a lower end of the frame 10, and in detail, the wheels 30a are pivoted to left and right sides of the lower end of the frame 10. Power supply unit 30b detachable installs on frame 10, and power supply unit 30b specifically is rechargeable battery, in order to give the utility model discloses an electronic year thing machine of climbing building 100 of climbing supplies power, can recycle, and it is convenient to change. The rotary actuator 30c is preferably a motor, and the rotary actuator 30c is fixed to the vehicle body frame 10, and the rotary actuator 30c is electrically connected to the power supply terminal of the power supply device 30 b. The stair climbing machine executing mechanism is arranged at the lower end of the vehicle frame 10, the stair climbing executing mechanism 40 is in transmission connection with the output end of the rotary driver 30c, and the rotary driver 30c drives the stair climbing executing mechanism 40 to operate so as to realize the stair climbing action. The auxiliary wheel supporting mechanism 50 comprises a supporting wheel assembly 51 and a locking assembly 52, the supporting wheel assembly 51 is rotatably arranged on the frame 10, and the supporting wheel assembly 51 and the wheel 30a are both positioned at the front side of the frame 10; the support wheel assembly 51 has a retracted position (shown in fig. 1) retracted to the frame 10 and a support position (shown in fig. 2) extended to the frame 10, the locking assembly 52 is associated between the frame 10 and the support wheel assembly 51, and the locking assembly 52 selectively locks the support wheel assembly 51 at the retracted position or at the support position. Then when carrying out stair and climbing the building, lock in the receipts through locking subassembly 52 with supporting wheel subassembly 51 and close the position, the user grips handle subassembly 20 and makes the utility model discloses an electronic year thing climbs building machine 100 slope, makes the utility model discloses an electronic year thing climbs building machine 100 adjusts to climbing the building mode as shown in fig. 1, drives to climb building actuating mechanism 40 and move for rotary actuator 30c by the power supply unit 30b power supply, can realize the utility model discloses an electronic year thing climbs building machine 100 and carries out stair and climb the building. When walking on the level land, lock in the support position through locking subassembly 52 with supporting wheel subassembly 51, frame 10 is put to the level, and wheel 30a and supporting wheel subassembly 51 can walk on the level land simultaneously, make the utility model discloses an electronic year thing climbs building machine 100 adjustment and switches to the translation mode as shown in fig. 2, realizes general the utility model discloses an electronic year thing climbs building machine 100 adjustment to walking on the level land is horizontal, can regard as dull and stereotyped shallow to use. Not only simple structure, service function is diversified moreover, can realize walking in the slope when stair climb the building, and the level walking when walking on the level land is adjusted according to the walking road conditions of difference and is switched over, has improved adaptability greatly, and the user uses more laborsaving convenience. Specifically, the following:

Referring to fig. 1 to 5, a horizontally disposed unfolding and folding fixing rod 11 is fixedly disposed on the frame 10, and the supporting wheel assembly 51 is rotatably disposed on the unfolding and folding fixing rod 11.

The supporting wheel assembly 51 includes a supporting frame 511 and a caster 512, the supporting frame 511 is rotatably disposed on the foldable fixing rod 11, the caster 512 is disposed on the supporting frame 511, in this embodiment, the caster 512 is preferably a universal caster, but not limited thereto. The unfolding and folding fixing rod 11 is provided with a folding locking part (not marked in the figures) and an unfolding locking part (not marked in the figures) which are perpendicular to each other, the locking component 52 is arranged on the support frame 511, and the locking component 52 can be selectively clamped and locked in the folding locking part or the unfolding locking part; when the locking component 52 is locked in the folding locking portion, the support frame 511 is located at the folding position, and is suitable for climbing stairs. When the locking member 52 is locked by engagement with the expansion locking portion, the support frame 511 is located at the expansion position, and the support frame 511 and the caster 512 support and move in a translational mode, thereby enabling walking on a flat ground.

In detail, in the present embodiment, the folding locking portion includes a first folding locking groove 111 opened on the unfolding fixing rod 11, the unfolding locking portion includes a first unfolding locking groove 113 opened on the unfolding fixing rod 11, and the first folding locking groove 111 and the first unfolding locking groove 113 are located in the same circumferential direction; the locking assembly 52 includes a first locking member 521 and a first elastic member 522, the first locking member 521 slides on the supporting frame 511 along a direction perpendicular to the telescopic fixing rod 11, the first elastic member 522 is preferably a spring, but not limited thereto, the first elastic member 522 abuts between the first locking member 521 and the supporting frame 511, and the first elastic member 522 constantly drives the first locking member 521 to move toward the direction close to the telescopic fixing rod 11; the first locking member 521 can be selectively locked in the first folding locking groove 111 or the first unfolding locking groove 113 in a clamping manner, and when the first locking member 521 is opposite to the first folding locking groove 111 or the first unfolding locking groove 113, the first locking member 521 can be automatically clamped in the first folding locking groove 111 or the first unfolding locking groove 113 through the elastic action of the first elastic member 522, so that the operation is more labor-saving and convenient. The first locking member 521 is locked to engage with the first folding locking groove 111 or the first unfolding locking groove 113 to lock the support frame 511 in the folding position or the support position, and the structure is simple and reasonable.

Meanwhile, the folding locking portion further includes a second folding locking groove 112 that is opened on the unfolding and folding fixing rod 11 and is spaced from the first folding locking groove 111, the unfolding locking portion further includes a second unfolding locking groove 114 that is opened on the unfolding and folding fixing rod 11, and the second folding locking groove 112 and the second unfolding locking groove 114 are located in the same circumferential direction; the locking component 52 further includes a second locking member 523 and a second elastic member 524, the second locking member 523 slides on the supporting frame 511 along a direction perpendicular to the telescopic fixing rod 11, the second elastic member 524 is preferably a spring, but not limited thereto, the second elastic member 524 abuts between the second locking member 523 and the supporting frame 511, and the second elastic member 524 constantly drives the second locking member 523 to move toward the direction close to the telescopic fixing rod 11; the second locking member 523 can be selectively locked to the second folding locking groove 112 or the second unfolding locking groove 114 in a clamping manner, and when the second locking member 523 is opposite to the second folding locking groove 112 or the second unfolding locking groove 114, the second locking member 523 can be automatically locked to the second folding locking groove 112 or the second unfolding locking groove 114 by the elastic force of the second elastic member 524, so that the operation is more labor-saving and convenient. The second locking member 523 locks the engaging and locking structure with the second folding locking groove 112 or the second unfolding locking groove 114, so as to further lock the support frame 511 at the folding position or the support position, and the structure is more secure and reliable.

In more detail, the supporting frame 511 includes a first supporting rod 5111, a second supporting rod 5112 and a connecting rod 5113, the first supporting rod 5111 and the second supporting rod 5112 are both vertically pivoted on the unfolding/folding fixing rod 11, and the connecting rod 5113 is vertically and fixedly connected between the first supporting rod 5111 and the second supporting rod 5112, so that the supporting frame 511 has a simple and compact structure. A first receiving groove 5111a is formed at one end of the first supporting rod 5111 close to the retractable fixing rod 11, the first locking member 521 slides in the first receiving groove 5111a, and the first elastic member 522 abuts between the first locking member 521 and the groove bottom of the first receiving groove 5111a, so that the first locking member 521 and the first elastic member 522 are mounted on the first supporting rod 5111, and the structure is simple and compact. A second receiving groove 5112a is formed at one end of the second supporting rod 5112 close to the retractable fixing rod 11, the second locking member 523 slides in the second receiving groove 5112a, and the second elastic member 524 abuts between the second locking member 523 and the groove bottom of the second receiving groove 5112a, so that the second locking member 523 and the second elastic member 524 are mounted on the second supporting rod 5112, and the structure is simple and compact. The locking assembly 52 further includes an operating rod 525, the operating rod 525 is vertically and fixedly connected between the first locking member 521 and the second locking member 523, so as to facilitate the operation of the first locking member 521 to disengage from the first foldable locking groove 111 or the first foldable locking groove 113 and the operation of the second locking member 523 to disengage from the second foldable locking groove 112 or the second foldable locking groove 114. The first support rod 5111 is provided with a first avoidance elongated hole 5111b communicated with the first accommodating groove 5111a, the second support rod 5112 is provided with a second avoidance elongated hole 5112b communicated with the second accommodating groove 5112a, and the operating rod 525 is arranged in the first avoidance elongated hole 5111b and the second avoidance elongated hole 5112b in a gap penetrating manner so as to provide enough moving space for the operating rod 525 and play a role in guiding, so that the structure is more reasonable. In detail, the casters 512 are disposed at both the end of the first supporting rod 5111 away from the foldable fixing rod 11 and the end of the second supporting rod 5112 away from the foldable fixing rod 11, so that the first supporting rod can move more stably in the translation mode.

Referring to fig. 1 to 2 and 5 to 7, in the present embodiment, the handle assembly 20 is rotatably adjusted and disposed at the upper end of the frame 10. Of course, in other embodiments, the grip assembly 20 may be fixed to the upper end of the frame 10, which is within the scope of the present invention, and therefore, will not be described herein.

Wherein, the utility model discloses an electronic year thing machine of climbing 100 still includes fixed connection frame 60, and fixed connection frame 60 contains first fixed connection seat 61, fixed connection 62 and second fixed connection seat 63, and first fixed connection seat 61 is fixed in the left side of frame 10 upper end, and second fixed connection seat 63 is fixed in the right side of frame 10 upper end, and the horizontal fixed connection of fixed connection 62 is between first fixed connection seat 61 and second fixed connection seat 63. The handle assembly 20 comprises a main handle 21, a first rotating connecting seat 22, a second rotating connecting seat 23, a locking rod 24 and a tightening lock handle 25, wherein the first rotating connecting seat 22 is fixed at the left end of the main handle 21, and the second rotating connecting seat 23 is fixed at the right end of the main handle 21. The horizontally first fixed connection seat 61 of wearing of clearance from left to right in proper order of check lock lever 24, in fixed connection 62 and the second fixed connection seat 63, first rotation connecting seat 22 is fixed in the left end of check lock lever 24, in detail, in this embodiment, the left end of check lock lever 24 is formed with stop cap 241, check lock lever 24 wears to arrange in first rotation connecting seat 22 left side back from left to right, first rotation connecting seat 22 left side is arranged in to stop cap 241 locator card to realize that first rotation connecting seat 22 is fixed in the structure of the left end of check lock lever 24. The second rotating connecting seat 23 is sleeved at the right end of the locking rod 24 in a clearance manner, and the tightening lock handle 25 is connected to the right end of the locking rod 24 in a threaded manner; the first fixed connection seat 61, the fixed connection tube 62 and the second fixed connection seat 63 are located between the first rotating connection seat 22 and the second rotating connection seat 23, and the second rotating connection seat 23 is located between the second fixed connection seat 63 and the tightening lock handle 25. Thereby realizing the structure that the main handle 21 is rotationally connected on the fixed connecting frame 60, and the first rotating connecting seat 22 and the second rotating connecting seat 23 can be pressed on the left side and the right side of the first fixed connecting seat 61 and the second fixed connecting seat 63 by rotating the screwing locking handle 25, and the structure is simple and firm.

In detail, in the present embodiment, a plurality of first positioning engaging portions 221 circumferentially distributed around the locking rod 24 are formed on the right side of the first rotating connection seat 22, a plurality of second positioning engaging portions 611 circumferentially distributed around the locking rod 24 are formed on the left side of the first fixed connection seat 61, and the first positioning engaging portions 221 and the second positioning engaging portions 611 are detachably engaged with each other in a positioning manner; the left side of the second rotating connection seat 23 is formed with a plurality of third positioning engaging portions 231 circumferentially distributed around the locking rod 24, the right side of the second fixed connection seat 63 is formed with a plurality of fourth positioning engaging portions 631 circumferentially distributed around the locking rod 24, and the third positioning engaging portions 231 and the fourth positioning engaging portions 631 are detachably engaged with each other in a positioning manner. The screwing lock handle 25 is rotated to unscrew the first rotating connection seat 22 from the first fixed connection seat 61, the first positioning engaging portion 221 is disengaged from the engaged second positioning engaging portion 611, the second rotating connection seat 23 is disengaged from the second fixed connection seat 63, the third positioning engaging portion 231 is disengaged from the engaged fourth positioning engaging portion 631, the main grip 21 is rotated to a position of a desired angle, the screwing lock handle 25 is rotated to lock the first positioning engaging portion 221 and the aligned second positioning engaging portion 611, the third positioning engaging portion 231 and the aligned fourth positioning engaging portion 631 are engaged with each other to lock the position of the main grip 21 at the desired angle. Preferably, in the present embodiment, the first positioning engaging portions 221 and the second positioning engaging portions 611 are disposed in the same number and are uniformly distributed, and the third positioning engaging portions 231 and the fourth positioning engaging portions 631 are also disposed in the same number and are uniformly distributed, so as to implement a one-to-one corresponding engaging and positioning structure, so as to enhance the stability of the engaging and positioning. Of course, in other embodiments, the number of the first positioning engaging portion 221 and the second positioning engaging portion 611 may be different, and/or the number of the third positioning engaging portion 231 and the fourth positioning engaging portion 631 may also be different, which can achieve the structure of engaging and positioning engagement, and therefore, the description thereof is omitted here.

Optionally, in this embodiment, the first positioning engaging portion 221 is a first spherical protrusion (not labeled), and the second positioning engaging portion 611 is a first spherical recess (not labeled) detachably engaged with the first spherical protrusion; the third positioning and engaging portion 231 is a second spherical protrusion (not labeled), and the fourth positioning and engaging portion 631 is a second spherical recess (not labeled) detachably engaged with the second spherical protrusion. The locking, positioning and matching structure between the first rotating connecting seat 22 and the first fixed connecting seat 61 and between the second rotating connecting seat 23 and the second fixed connecting seat 63 is more compact and stable, and the sliding and loosening situation is not easy to occur. Of course, in another embodiment, the first positioning engaging portion 221 may be a first spherical recess, the second positioning engaging portion 611 may be a first spherical protrusion engaged with the first spherical recess in a detachable manner, the third positioning engaging portion 231 may be a second spherical recess, and the fourth positioning engaging portion 631 may be a second spherical protrusion engaged with the second spherical recess in a detachable manner. Moreover, in other embodiments, the first positioning engaging portion 221 and the second positioning engaging portion 611, and the third positioning engaging portion 231 and the fourth positioning engaging portion 631 may also be selected from other structures capable of achieving mutual engaging and positioning cooperation, and therefore, the description thereof is omitted.

Referring to fig. 9 to 11, the stair climbing actuator 40 includes a pivot mounting seat 41, a rotating shaft 42, a first rotating arm 43, a second rotating arm 44, a first positioning sleeve 45a, a second positioning sleeve 45b, a locking screw 46, a first blocking piece 47a, a second blocking piece 47b, a first nut 48a and a second nut 48b, the pivot mounting seat 41 is fixed to a front side of a lower end of the frame 10, the rotating shaft 42 is horizontally pivoted to the pivot mounting seat 41, the rotary actuator 30c is preferably fixedly mounted on a top of the pivot mounting seat 41 to realize a structure that the rotary actuator 30c is fixed to the frame 10, the rotating shaft 42 is in transmission connection with an output end of the rotary actuator 30c, and the rotary actuator 30c is preferably in transmission connection with the rotating shaft 42 through a reducer (not shown in the figures) to enable the rotating shaft 42 to obtain a desired rotation speed and torque. The first rotating arm 43 is positioned and sleeved at the left end of the rotating shaft 42, and the second rotating arm 44 is positioned and sleeved at the right end of the rotating shaft 42; the first positioning sleeve 45a and the second positioning sleeve 45b are both sleeved on the rotating shaft 42, the first positioning sleeve 45a is located between the right side of the first rotating arm 43 and the left side of the pivot mounting seat 41, and the second positioning sleeve 45b is located between the left side of the second rotating arm 44 and the right side of the pivot mounting seat 41. Preferably, in the present embodiment, a first positioning groove 431 is formed on the right side of the first rotating arm 43 for positioning the first positioning sleeve 45a to prevent the first positioning sleeve 45a from sliding; a second positioning groove 441 for positioning the second positioning sleeve 45b is formed on the left side of the second rotating arm 44 to prevent the second positioning sleeve 45b from sliding. The locking screw 46 horizontally penetrates the rotating shaft 42, the first blocking piece 47a is sleeved at the left end of the locking screw 46, the first nut 48a is in threaded connection with the left end of the locking screw 46, and the first blocking piece 47a is located between the left side of the rotating shaft 42 and the right side of the first nut 48 a. The second blocking piece 47b is sleeved at the right end of the locking screw 46, the second nut 48b is screwed at the right end of the locking screw 46, and the second blocking piece 47b is located between the right side of the rotating shaft 42 and the left side of the second nut 48 b. The first positioning sleeve 45a and the first blocking piece 47a increase the clamping force on the first rotating arm 43, and the second positioning sleeve 45b and the second blocking piece 47b increase the clamping force on the second rotating arm 44, so that the first rotating arm 43 and the second rotating arm 44 are more stably mounted. Moreover, by the quick screwing connection of the first nut 48a and the second nut 48b, the clamping effect of the quick assembly and disassembly of the first rotating arm 43 and the second rotating arm 44 can be achieved. The first nut 48a and the second nut 48b are preferably anti-loose nuts, so that the locking structure is more stable and is not easy to loosen.

Preferably, in the present embodiment, a first positioning boss 421 is formed at the left end of the rotating shaft 42, a first positioning hole 433 is formed on the first rotating arm 43, and the first positioning hole 433 is positioned and sleeved on the first positioning boss 421; the right end of the rotating shaft 42 is formed with a second positioning protrusion 422, the second rotating arm 44 is formed with a second positioning hole 443, and the second positioning hole 443 is positioned and sleeved on the second positioning protrusion 422. The first positioning convex column 421 and the first positioning hole 433 are positioned in a polygonal matching manner, the second positioning convex column 422 and the second positioning hole 443 are also positioned in a polygonal matching manner, the number of the polygonal sides can be adjusted according to different load requirements, the required number of stress surfaces in the transmission process can be obtained, and accordingly the abrasion of parts can be reduced. Preferably, in the present embodiment, the reinforcing ribs 49a are formed on both the left and right sides of the first rotating arm 43 and the left and right sides of the second rotating arm 44, so as to improve the load strength of the first rotating arm 43 and the second rotating arm 44, and the structure is more firm.

Alternatively, in this embodiment, the two ends of the first rotating arm 43 and the two ends of the second rotating arm 44 are both fixedly provided with the fixed wheels 49b, so that the first rotating arm 43 and the second rotating arm 44 can drive the fixedly provided fixed wheels 49b to rotate together to realize the stair climbing action. Of course, in other embodiments, the first rotating arm 43 and the second rotating arm 44 may also be selected to be used for driving a link mechanism type stair climbing driven structure to implement the stair climbing action, and the link mechanism type stair climbing driven structure is composed of a plurality of link mechanisms, and the specific structure thereof is well known to those skilled in the art, and therefore, will not be described herein again.

Referring to fig. 1, the electric stair climbing machine 100 further includes an illumination assembly 70, the illumination assembly 70 includes an illumination lamp (not shown) and a lampshade (not labeled in the figure), the illumination lamp is fixed on the front side of the lower end of the frame 10, and the lampshade is fixed to cover the illumination lamp, so as to provide illumination in the dark environment and improve the safety during the use. In this embodiment, the illumination assemblies 70 are disposed on both sides of the frame 10 to expand the illumination range and better satisfy the illumination requirement. Preferably, the electric stair climbing machine 100 further comprises a mounting beam 80a and a control panel 80b, wherein the mounting beam 80a is horizontally fixed on the frame 10, and the mounting beam 80a is located between the wheel supporting mechanism 50 and the handle assembly 20; control panel 80b and locate on installation roof beam 80a, control panel 80b electricity and connect in power supply unit 30b, rotary actuator 30c and light on, control panel 80b is last to be provided with the speed adjusting button (not marking in the figure) of control rotary actuator 30c rotational speed, control rotary actuator 30c forward reverse turn to switch over the button (not marking in the figure), control light switch's illumination button (not marking in the figure), control the rotational speed of driver rotational speed through speed adjusting button according to the user demand of reality, control through turning to switch over the button to rotary actuator 30c forward reverse turn to realize corresponding climbing up the building and climbing down the building according to climbing up and down the building demand, close or open the light through the illumination button according to the environment light and shade, and is more convenient to use. The specific structure of the control panel 80b is well known to those skilled in the art, and therefore, will not be described herein.

Referring to fig. 1, the electric stair climbing device 100 further includes an auxiliary handle 90, the auxiliary handle 90 is fixed on the frame 10, and the auxiliary handle 90 is located between the wheel supporting mechanism 50 and the handle assembly 20 to provide the user with a plurality of positions for holding, thereby facilitating the use. Preferably, in the present embodiment, the main grip 21 is sleeved with a first silica gel sleeve 211 and a second silica gel sleeve 212 for the user to hold, the second silica gel sleeve 212 is provided with a first start button 213, the auxiliary grip 90 is sleeved with a third silica gel sleeve 91 for the user to hold, the third silica gel sleeve 91 is provided with a second start button 92, and the first start button 213 and the second start button 92 are electrically connected to the power supply device 30b and the rotary driver 30 c. Pressing one of the first start button 213 and the second start button 92 starts the rotary driver 30c to drive the stair climbing actuator 40 to start operation; when the first start button 213 and the second start button 92 are released, the rotation of the rotary actuator 30c is stopped, and the stair climbing actuator 40 is stopped at the same time, so that the operation is more convenient, safe and reliable. Optionally, in this embodiment, the fourth silicone sleeve 621 for the user to hold is also sleeved on the fixed connection tube 62, so that the user can hold more comfortably.

please continue to refer to fig. 1, the utility model discloses an electronic year thing machine of climbing building 100 still includes the exhibition and receipts layer board 30d and fixed layer board 30e, exhibition and receipts layer board 30d is the dorsal part of locating the frame 10 lower extreme that can expand and receive the adjustment, exhibition and receipts layer board 30d has one and folds up in the folding position of frame 10 and one and expand in the bearing position of frame 10, when not using exhibition and receive layer board 30d, can rotate exhibition and receive layer board 30d to the folding position of folding up in frame 10, when needs use exhibition and receive layer board 30d, can rotate exhibition and receive layer board 30d to the bearing position of expanding in frame 10 and load the goods. The fixing support plate 30e is fixed on the back side of the frame 10, the fixing support plate 30e is located above the folding and unfolding support plate 30d, and the width of the fixing support plate 30e is larger than that of the frame 10, so that the bearing surface of the goods is increased, the goods with large bearing volume can be conveniently borne, and the frame 10 can be better protected.

The working principle of the electric stair climbing machine 100 of the present invention is explained in detail with reference to the accompanying drawings:

when the stair climbing action is carried out to needs, first-selected, pass through speed regulation button adjustment driver to required rotational speed according to the user demand of reality, climb up the building or reverse down the building for corotation through turning to switching button adjustment rotary driver 30c according to the building demand of climbing from top to bottom to and close or open the light through the illumination button according to the environment light and shade. The utility model discloses an electronic year thing machine of climbing building 100 inclines, presses one of first start button 213 and second start button 92 again, starts rotary driver 30c and drives first swinging boom 43 and second swinging boom 44 that climbs building actuating mechanism 40 and begin to rotate the operation, can realize that electronic year thing machine of climbing building 100 carries out stair and climbs the building.

When needs are walked on the level ground, the action bars 525 through operation locking assembly 52 locks first bracing piece 5111 and second bracing piece 5112 of supporting wheel subassembly 51 in the support position to screw the lock through rotating 25 and adjust the position and the locking of main handle 21 to perpendicular to frame 10, frame 10 is put to the level, and wheel 30a and supporting wheel subassembly 51 can walk on the level ground simultaneously, make the utility model discloses an electronic year thing machine 100 that climbs the building is adjusted and is switched to the translation mode as shown in fig. 2, realizes will the utility model discloses an electronic year thing machine 100 that climbs the building is adjusted to walking on the level ground level, can regard as dull and stereotyped shallow to use.

Compared with the prior art, the grip component 20 of the electric object-carrying stair climbing machine 100 of the utility model is arranged at the upper end of the frame 10, the wheel 30a is horizontally pivoted at the lower end of the frame 10, and the power supply device 30b is detachably arranged on the frame 10; the rotary driver 30c is fixed on the frame 10, and the rotary driver 30c is electrically connected to the power supply end of the power supply device 30 b; the stair climbing machine executing mechanism is arranged at the lower end of the frame 10, and the stair climbing executing mechanism 40 is in transmission connection with the output end of the rotary driver 30 c; the auxiliary wheel supporting mechanism 50 comprises a supporting wheel assembly 51 and a locking assembly 52, the supporting wheel assembly 51 is rotatably arranged on the frame 10, and the supporting wheel assembly 51 and the wheel 30a are both positioned at the front side of the frame 10; the support wheel assembly 51 has a retracted position retracted to the frame 10 and a support position deployed to the frame 10, the locking assembly 52 is associated between the frame 10 and the support wheel assembly 51, and the locking assembly 52 selectively locks the support wheel assembly 51 at the retracted position or at the support position. Then when carrying out stair and climbing the building, lock supporting wheel subassembly 51 in closing the position through locking subassembly 52, the user grips handle subassembly 20 and makes the utility model discloses an electronic year thing climbs building machine 100 slope, is supplied power by power supply unit 30b and drives for rotary actuator 30c and climb building actuating mechanism 40 and move, can realize the utility model discloses an electronic year thing climbs building machine 100 and carries out stair and climb the building. When walking on the level land, lock supporting wheel subassembly 51 in the support position through locking Assembly 52, frame 10 is put to the level, and wheel 30a and supporting wheel subassembly 51 can walk on the level land simultaneously, realize will the utility model discloses an electronic year thing stair climbing machine 100 of carrying adjusts to walking on the level land horizontally. Not only simple structure, service function is diversified moreover, can realize walking in the slope when stair climb the building, and the level walking is adjusted according to the walking road conditions of difference and is switched over when walking on the level land, has improved adaptability greatly, and the user uses more laborsaving convenience, and the difficult tired appearance prevents the emergence of incident, the user demand that satisfies the user that can be better.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.

Claims (17)

1. An electric loading stair climbing machine, comprising:

A frame;

The handle assembly is arranged at the upper end of the frame;

The wheels are horizontally pivoted at the lower end of the frame;

The power supply device is detachably arranged on the frame;

The rotary driver is fixed on the frame and electrically connected to the power supply end of the power supply device;

the stair climbing machine executing mechanism is arranged at the lower end of the frame and is in transmission connection with the output end of the rotary driver; and

The auxiliary wheel supporting mechanism comprises a supporting wheel assembly and a locking assembly, the supporting wheel assembly is rotatably arranged on the frame, and the supporting wheel assembly and the wheels are both positioned on the front side of the frame; the supporting wheel component is provided with a folding position for folding the frame and a supporting position for unfolding the frame, the locking component is associated between the frame and the supporting wheel component, and the locking component can selectively lock the supporting wheel component at the folding position or the supporting position.

2. The electric stair climbing machine with loading material according to claim 1, wherein a horizontally disposed expanding and contracting fixing rod is fixedly disposed on the frame, and the supporting wheel assembly is rotatably disposed on the expanding and contracting fixing rod.

3. The electric loading stair climbing machine according to claim 2, wherein the supporting wheel assembly comprises a supporting frame and a caster, the supporting frame is rotatably disposed on the retractable fixing rod, and the caster is disposed on the supporting frame; the unfolding and folding fixing rod is provided with a folding locking part and an unfolding locking part which are perpendicular to each other, the locking assembly is arranged on the support frame, and the locking assembly can be selectively clamped and locked in the folding locking part or the unfolding locking part; when the locking component is clamped and locked on the folding locking part, the support frame is positioned at the folding position; when the locking component is clamped and locked on the unfolding locking part, the supporting frame is located at the unfolding position.

4. The motorized cargo stair climber of claim 3, wherein the retracted locking portion comprises a first retracted locking groove opened on the retractable securing rod, the extended locking portion comprises a first extended locking groove opened on the retractable securing rod, and the first retracted locking groove and the first extended locking groove are located in the same circumferential direction; the locking assembly comprises a first locking piece and a first elastic piece, the first locking piece slides on the supporting frame along the direction vertical to the unfolding and folding fixed rod, the first elastic piece is abutted between the first locking piece and the supporting frame, and the first elastic piece constantly drives the first locking piece to move towards the direction close to the unfolding and folding fixed rod; the first locking member can be selectively clamped and locked in the first folding locking groove or the first unfolding locking groove.

5. The motorized cargo stair climber of claim 4, wherein the retracted locking portion further comprises a second retracted locking recess formed on the retractable securing rod and spaced apart from the first retracted locking recess, the extended locking portion further comprises a second extended locking recess formed on the retractable securing rod, and the second retracted locking recess and the second extended locking recess are located in the same circumferential direction; the locking assembly further comprises a second locking piece and a second elastic piece, the second locking piece slides on the supporting frame along the direction perpendicular to the unfolding and folding fixing rod, the second elastic piece abuts against the space between the second locking piece and the supporting frame, and the second elastic piece constantly drives the second locking piece to move towards the direction close to the unfolding and folding fixing rod; the second locking piece can be selectively clamped and locked in the second folding locking groove or the second unfolding locking groove.

6. The electric loading stair climbing machine according to claim 5, wherein the supporting frame comprises a first supporting rod, a second supporting rod and a connecting rod, the first supporting rod and the second supporting rod are vertically pivoted on the expansion fixing rod, and the connecting rod is vertically and fixedly connected between the first supporting rod and the second supporting rod; a first accommodating groove is formed in one end, close to the unfolding and folding fixing rod, of the first supporting rod, the first locking piece slides in the first accommodating groove, and the first elastic piece abuts between the first locking piece and the groove bottom of the first accommodating groove; a second accommodating groove is formed in one end, close to the unfolding and folding fixing rod, of the second supporting rod, the second locking piece slides in the second accommodating groove, and the second elastic piece abuts between the second locking piece and the bottom of the second accommodating groove; the locking assembly further comprises an operating rod, and the operating rod is vertically and fixedly connected between the first locking piece and the second locking piece; the first support rod is provided with a first avoidance elongated hole communicated with the first accommodating groove, the second support rod is provided with a second avoidance elongated hole communicated with the second accommodating groove, and the operating rod is arranged in the first avoidance elongated hole and the second avoidance elongated hole in a penetrating manner in a clearance manner; the first supporting rod is far away from one end of the unfolding and folding fixing rod and the second supporting rod is far away from one end of the unfolding and folding fixing rod, and the trundles are arranged at the two ends of the unfolding and folding fixing rod.

7. an electric stair climbing device as claimed in any one of claims 1 to 6 wherein the handle assembly is rotatably adjustable at the upper end of the frame.

8. The electric loading stair climbing machine according to claim 7, further comprising a fixed connection frame, wherein the fixed connection frame comprises a first fixed connection seat, a fixed connection pipe and a second fixed connection seat, the first fixed connection seat is fixed on the left side of the upper end of the frame, the second fixed connection seat is fixed on the right side of the upper end of the frame, and the fixed connection pipe is horizontally and fixedly connected between the first fixed connection seat and the second fixed connection seat.

9. the motorized carrying stair climbing machine according to claim 8, wherein the handle assembly comprises a main handle, a first rotating connection seat fixed to a left end of the main handle, a second rotating connection seat fixed to a right end of the main handle, a locking lever, and a tightening lock handle; the locking rod is horizontally and sequentially arranged in the first fixed connecting seat, the fixed connecting pipe and the second fixed connecting seat in a penetrating manner from left to right in a clearance mode, the first rotating connecting seat is fixed at the left end of the locking rod, the second rotating connecting seat is sleeved at the right end of the locking rod in a clearance mode, and the screwing lock handle is in threaded connection with the right end of the locking rod; the first fixed connecting seat, the fixed connecting pipe and the second fixed connecting seat are positioned between the first rotating connecting seat and the second rotating connecting seat, and the second rotating connecting seat is positioned between the second fixed connecting seat and the screwing locking handle; a plurality of first positioning clamping parts distributed circumferentially around the locking rod are formed on the right side of the first rotating connecting seat, a plurality of second positioning clamping parts distributed circumferentially around the locking rod are formed on the left side of the first fixing connecting seat, and the first positioning clamping parts and the second positioning clamping parts can be detachably clamped and positioned to be matched with each other; the left side of the second rotating connecting seat is provided with a plurality of third positioning clamping parts which are circumferentially distributed around the locking rod, the right side of the second fixed connecting seat is provided with a plurality of fourth positioning clamping parts which are circumferentially distributed around the locking rod, and the third positioning clamping parts and the fourth positioning clamping parts can be clamped and positioned in a detachable way.

10. The electric stair climbing machine with loading material according to claim 9, wherein one of said first positioning engaging portion and said second positioning engaging portion is a first spherical protrusion, and the other of said first positioning engaging portion and said second positioning engaging portion is a first spherical recess detachably engaged with said first spherical protrusion; one of the third positioning and clamping part and the fourth positioning and clamping part is a second spherical protrusion, and the other of the third positioning and clamping part and the fourth positioning and clamping part is a second spherical groove which is detachably clamped, positioned and matched with the second spherical protrusion.

11. The electric loading stair climbing machine according to any one of claims 1 to 6, wherein the stair climbing actuator comprises a pivot mounting seat, a rotating shaft, a first rotating arm, a second rotating arm, a first positioning sleeve, a second positioning sleeve, a locking screw, a first blocking piece, a second blocking piece, a first nut and a second nut, the pivot mounting seat is fixed on the front side of the lower end of the frame, the rotating shaft is horizontally pivoted on the pivot mounting seat, and the rotating shaft is in transmission connection with the output end of the rotary driver; the first rotating arm is positioned and sleeved at the left end of the rotating shaft, and the second rotating arm is positioned and sleeved at the right end of the rotating shaft; the first positioning sleeve and the second positioning sleeve are sleeved on the rotating shaft, the first positioning sleeve is positioned between the right side of the first rotating arm and the left side of the pivoting mounting seat, and the second positioning sleeve is positioned between the left side of the second rotating arm and the right side of the pivoting mounting seat; the locking screw is horizontally arranged in the rotating shaft in a penetrating mode, the first blocking piece is sleeved at the left end of the locking screw, the first nut is connected to the left end of the locking screw in a threaded mode, and the first blocking piece is located between the left side of the rotating shaft and the right side of the first nut; the second retaining plate is sleeved at the right end of the locking screw rod, the second nut is in threaded connection with the right end of the locking screw rod, and the second retaining plate is located between the right side of the rotating shaft and the left side of the second nut.

12. The electric loading stair climbing machine according to claim 11, wherein a first positioning boss is formed at a left end of the rotating shaft, a first positioning hole is formed on the first rotating arm, and the first positioning hole is positioned and sleeved on the first positioning boss; the right end of the rotating shaft is provided with a second positioning convex column, a second positioning hole is formed in the second rotating arm, and the second positioning hole is sleeved on the second positioning convex column in a positioning mode.

13. The electric loading stair climbing machine according to claim 11, wherein fixed wheels are fixedly arranged at both ends of the first rotating arm and both ends of the second rotating arm.

14. An electric stair climbing machine as claimed in any one of claims 1 to 6, further comprising an illumination assembly, wherein the illumination assembly comprises an illumination lamp and a lampshade, the illumination lamp is fixedly arranged at the front side of the lower end of the frame, and the lampshade is fixedly covered on the illumination lamp.

15. the motorized cart for climbing stairs of claim 14, further comprising a mounting bar and a control panel, wherein said mounting bar is horizontally fixed to said frame and said mounting bar is located between said wheel support mechanism and said handle assembly; the control panel is arranged on the mounting beam and is electrically connected to the power supply device, the rotary driver and the illuminating lamp, and a rotating speed adjusting button for controlling the rotating speed of the rotary driver, a steering switching button for controlling the forward and reverse rotation of the rotary driver and an illuminating button for controlling the switch of the illuminating lamp are arranged on the control panel.

16. An electric cargo stair climbing machine according to any one of claims 1 to 6 further comprising a secondary handle secured to the frame and located between the wheel support mechanism and the handle assembly.

17. The electric stair climbing device with objects to be carried according to any one of claims 1 to 6, further comprising a retractable supporting plate and a fixing supporting plate, wherein the retractable supporting plate is arranged at the back side of the lower end of the frame in a retractable and adjustable manner, and the retractable supporting plate has a retracted position folded in the frame and a supporting position unfolded in the frame; the fixed supporting plate is fixed on the back side of the frame, and the fixed supporting plate is located above the folding and unfolding supporting plate.