CN110758526A

CN110758526A - Baby carriage with stair assisting function

Info

Publication number: CN110758526A
Application number: CN201910755251.3A
Authority: CN
Inventors: 佘娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-08-15
Filing date: 2019-08-15
Publication date: 2020-02-07

Abstract

The invention relates to the technical field of baby carriages, in particular to a baby carriage with a stair-climbing function, which comprises a cradle, a front wheel travelling mechanism and a rear wheel self-locking mechanism, wherein the bottom of the cradle is provided with a mounting plate, one end of the cradle is provided with an inverted U-shaped handrail, the bottom of the mounting plate is provided with an inverted T-shaped extension frame, two ends of the handrail are respectively and fixedly connected with two ends of the extension frame, the front wheel travelling mechanism comprises two lifting components and two front three-wheel travelling components, the self-locking mechanism comprises an H-shaped rear wheel bracket and a self-locking component, two ends of the bottom of the rear wheel bracket are respectively provided with a rear roller, a rotating guide rod is arranged between the two rear rollers, a fixed bracket is arranged between the rear wheel bracket and the extension frame, the self-locking component is arranged at the bottom of the fixed bracket, the working end of the self-locking component is in transmission connection with the rotating guide rod, the, and self-locking components are arranged, so that the safety is improved.

Description

Baby carriage with stair assisting function

Technical Field

The invention relates to the technical field of a baby carriage, in particular to a baby carriage with a stair assisting function.

Background

The baby stroller is a transportation tool for babies, and can be moved only by being assisted by a person or pulled, the baby stroller generally comprises a sunshade, a seat cushion, a sleeping basket and a haze-proof cover, the service life of the baby stroller is generally three to five years, the age of a baby is considered during purchasing, the functions of the baby stroller are upgraded to sleeping, dining and playing, the baby stroller brings great convenience to life, and problems are caused, for example, the baby stroller is troublesome to use upstairs in a corridor without an elevator, although the baby stroller can be folded, one hand holds a baby, the other hand is difficult to take the baby stroller upstairs, the conventional baby stroller is usually locked by two universal wheels with self-locking functions behind the baby stroller when the wheels need to be locked, and the two universal wheels need to be manually locked when the wheels are locked, when forgetting that one universal wheel does not lock the universal wheel, the baby carriage can slide laterally, and the safety is low, a baby carriage with a stair assisting function is provided, so that the problem is solved.

Disclosure of Invention

The invention aims to provide a baby carriage with a stair assisting function, which can climb stairs according to the height of the stairs, solves the inconvenience caused by ascending the baby carriage, and is provided with a self-locking assembly to improve the safety.

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

the utility model provides a baby carriage with stair are assisted and are gone up function, including the cradle, still include front wheel running gear and rear wheel self-locking mechanism, the bottom of cradle is equipped with the mounting panel, the one end of cradle is equipped with the type of falling U handrail, the bottom of mounting panel is equipped with the type of falling T and extends the frame, the both ends of handrail are respectively in the both ends fixed connection of extending the frame, front wheel running gear includes two lifting unit and two front tricycle running gear, two lifting unit symmetry and interval set up the bottom one end at the mounting panel, every front tricycle running gear sets up respectively in the bottom of every lifting unit, self-locking mechanism includes H type rear wheel support and self-locking subassembly, the one end of rear wheel support is fixed connection with the bottom of mounting panel, the bottom both ends of rear wheel support are equipped with the rear roller respectively, be equipped with the rotation guide arm between two rear rollers, the both ends of rotation guide arm can rotate respectively run through the inner wall and the outer wall of rear wheel, a fixed support is arranged between the rear wheel support and the extension frame, two ends of the fixed support are respectively and fixedly connected with the centers of the rear wheel support and the rear wheel support, the self-locking assembly is arranged at the bottom of the fixed support, and the working end of the self-locking assembly is in transmission connection with the rotary guide rod.

Preferably, every lifting unit is including adjusting the loop bar respectively, adjust pole and bolt, it is vertical setting in the bottom of mounting panel to adjust the loop bar, adjust the inside that the pole can gliding setting is adjusting the loop bar, and the one end of adjusting the pole extends to the outside of adjusting the loop bar, be equipped with the locking screw that a plurality of distributed the setting along the vertical direction of adjusting the pole on the regulation pole, the lower extreme one side of adjusting the loop bar is equipped with one can with every locking screw one-to-one's direction screw, the bolt sets up the inside at the direction screw, the bolt can extend to the inside of every locking screw respectively, the lower extreme one side of adjusting the pole is equipped with the spliced pole, preceding tricycle running gear's inside can be rotatory setting on the spliced pole.

Preferably, every preceding tricycle running gear includes A-frame and three gyro wheel respectively, and the A-frame is vertical setting, and three gyro wheel is vertical respectively and can the pivoted setting in every corner of A-frame, and the center department of A-frame is equipped with the bearing, and the one end of every hinge post can the pivoted respectively insert the bearing inner circle of locating on every preceding tricycle running gear, and the both ends of rotatory guide arm can the pivoted respectively insert the bearing inner circle of locating on every back tricycle running gear.

Preferably, the self-locking assembly comprises an inverted U-shaped sleeve frame, a rotating rod, a locking column and a locking box, the inverted U-shaped sleeve frame is vertically arranged at the bottom of the fixed support, a first rotating sleeve and a second rotating sleeve are respectively arranged at two ends of the bottom of the inverted U-shaped support, the rotating rod and the locking box are respectively arranged inside the inverted U-shaped sleeve frame, the locking box is vertically and fixedly arranged on the inner side wall of the second rotating sleeve, the rotating rod is horizontally arranged, one end of the rotating rod can be slidably inserted into the inner ring of the first rotating sleeve, the locking column is horizontally and fixedly arranged at one end of the rotating rod close to the locking box, a locking hole for the locking column to pass through is formed in the locking box, two limiting blocks capable of moving in opposite directions are arranged inside the locking box, one end adjacent to the two limiting blocks is of an arc-shaped structure, an inner groove for each limiting block to slide is formed in the locking box, and a first spring is respectively arranged in each, the both ends of every first spring are contradicted with the one end of every stopper and the inner wall of inside groove respectively, are equipped with the conflict grooving that is used for supplying every spacing slider to contradict on the locking post.

Preferably, be equipped with fixed cover on the bull stick, be equipped with the board of falling the U on the fixed cover, the inside of this board of falling the U is equipped with the main synchronizing wheel, this main synchronizing wheel can the pivoted setting in the inside of the board of falling the U, the center department of main synchronizing wheel is equipped with the round hole of dodging that is used for dodging fixed cover, be equipped with a spacing on this dodging the round hole, fixed cover is equipped with and is used for supplying the gliding spacing groove of spacing, be equipped with vice synchronizing wheel on the rotating guide pole, this vice synchronizing wheel and rotating guide pole fixed connection, main synchronizing wheel passes through the hold-in range and is connected with.

Preferably, the one end that the locking post was kept away from to the bull stick is equipped with the second spring, the one end that the locking post was kept away from to the bull stick still is equipped with the joint post, the one end of this joint post and the one end fixed connection of rotating guide arm, the both ends of second spring are contradicted with joint post and one of them lateral wall that extends the cover respectively, the one end that is close to fixed cover on the bull stick is equipped with spacing post, the one end of this spacing post can be contradicted near the inner wall that one of them extension cover of second spring with two extension covers, the one end that is close to the joint post of mount is equipped with the extension frame, the one end that should extend the frame is equipped with the joint pole, the articulated one end that sets up at the extension frame of this joint pole, be equipped with.

Preferably, one side that the link is close to the joint pole is equipped with U type joint piece, and what the setting that the one end of joint pole can be dismantled is on U type joint piece, the lateral wall fixed connection of the one end of U type joint piece and link.

The invention has the beneficial effects that: a baby carriage with a stair assisting function can manually adjust the height of a front three-wheel assembly according to the height of a stair, a bolt is manually twisted, a dispensing rod is manually shifted, the adjusting rod is stretched in an adjusting sleeve rod until the adjusting rod is stretched to a required position and stops, then the bolt is manually twisted and is respectively locked with a guide screw hole and a locking screw hole in a threaded mode, when the baby carriage moves upstairs and downstairs, a triangular support rotates and drives three rollers to move in a crossed mode on the stair to form a stair climbing action, when the baby carriage moves upstairs or on a road, a clamping column is manually pushed, the clamping column respectively drives a rotating rod and the locking column to extend towards the inside of a locking box, after locking, a clamping rod is manually pulled, one end of the clamping rod is clamped with a clamping groove in the clamping column to be locked, and when locking is not needed, the clamping columns, the rotating rods and the locking columns are reset by the aid of the second springs, the limiting columns are abutted against the side wall of one extending sleeve for limiting, the U-shaped clamping blocks are made of elastic soft rubber materials and can clamp the clamping rods, when each rear roller moves, the rotating guide rods are driven to rotate at the same time, the main synchronizing wheel is driven to rotate by the rotating guide rods through the auxiliary synchronizing wheels, the main synchronizing wheel abuts against the limiting grooves in the fixing sleeves through the limiting strips, the fixing sleeves drive the rotating rods to rotate, the limiting grooves and the limiting strips are arranged, when the rotating rods and the locking columns move towards the inside of the locking box, the main synchronizing wheels cannot be influenced to move, when each rear roller is locked, the locking columns manually extend into the locking holes of the locking box, and the limiting grooves on the limiting blocks are abutted against the locking columns to lock by the limiting blocks due to the first spring limiting blocks, make the locking post unable rotation, make bull stick, main synchronizing wheel, vice synchronizing wheel, rotatory guide arm and every back gyro wheel simultaneously unable rotation, this equipment can climb the building according to the height of stair, solves the inconvenience that the perambulator produced when upstairs to from taking the auto-lock subassembly, improve safety.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic perspective view of a first embodiment of the present invention;

fig. 2 is a schematic perspective view illustrating a second embodiment of the present invention;

FIG. 3 is a side view of an embodiment of the present invention;

FIG. 4 is a partial perspective view of a self-locking assembly according to an embodiment of the present invention;

FIG. 5 is a partially exploded view of a lift assembly in accordance with one embodiment of the present invention;

FIG. 6 is a partial top view of a self-locking assembly according to one embodiment of the present invention;

FIG. 7 is a cross-sectional view taken along A-A of FIG. 6 in accordance with one embodiment of the present invention;

in the figure: the cradle comprises a cradle 1, a mounting plate 2, a handrail 3, a connecting frame 4, a lifting assembly 5, a front three-wheel walking assembly 6, a rear wheel bracket 7, a self-locking assembly 8, a rear roller 9, a rotating guide rod 10, a fixing bracket 11, an adjusting sleeve rod 12, an adjusting rod 13, a bolt 14, a locking screw hole 15, a guide screw hole 16, a connecting column 17, a triangular bracket 18, a roller 19, an inverted U-shaped sleeve frame 20, a rotating rod 21, a locking column 22, a locking box 23, a first rotating sleeve 24, a second rotating sleeve 25, a locking hole 26, a limiting block 27, an inner groove 28, a first spring 29, an abutting cutting groove 30, a fixing sleeve 31, an inverted U-shaped plate 32, a main synchronizing wheel 33, a limiting groove 34, an auxiliary synchronizing wheel 35, a second spring 36, a clamping column 37, a limiting column 38, an extending frame 39, a clamping rod 40, a clamping groove 41 and.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.

In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, a baby carriage with stair-climbing function, comprising a cradle 1, a front wheel traveling mechanism and a rear wheel self-locking mechanism, wherein a mounting plate 2 is arranged at the bottom of the cradle 1, an inverted U-shaped handrail 3 is arranged at one end of the cradle 1, an inverted T-shaped connecting frame 4 is arranged at the bottom of the mounting plate 2, two ends of the handrail 3 are fixedly connected with two ends of the connecting frame 4 respectively, the front wheel traveling mechanism comprises two lifting assemblies 5 and two front three-wheel traveling assemblies 6, the two lifting assemblies 5 are symmetrically arranged at one end of the bottom of the mounting plate 2 at intervals, each front three-wheel traveling assembly 6 is arranged at the bottom of each lifting assembly 5 respectively, the self-locking mechanism comprises an H-shaped rear wheel bracket 7 and a self-locking assembly 8, one end of the rear wheel bracket 7 is fixedly connected with the bottom of the mounting plate 2, rear rollers 9 are arranged at two ends of the bottom of the rear wheel bracket 7 respectively, a, the both ends of rotatory guide arm 10 can the pivoted respectively run through the inner wall and the outer wall of rear wheel support 7 and every rear roller 9 center department fixed connection, be equipped with fixed bolster 11 between rear wheel support 7 and link 4, the both ends of fixed bolster 11 respectively with the center department fixed connection of rear wheel support 7 and rear wheel support 7, auto-lock subassembly 8 sets up in the bottom of fixed bolster 11, the work end and the rotatory guide arm 10 transmission of auto-lock subassembly 8 are connected.

Each lifting assembly 5 comprises an adjusting loop bar 12, an adjusting rod 13 and a bolt 14, the adjusting loop bar 12 is vertically arranged at the bottom of the mounting plate 2, the adjusting rod 13 can be slidably arranged inside the adjusting loop bar 12, one end of the adjusting rod 13 extends towards the outside of the adjusting loop bar 12, the adjusting rod 13 is provided with a plurality of locking screw holes 15 distributed along the vertical direction of the adjusting rod 13, one side of the lower end of the adjusting loop bar 12 is provided with a guiding screw hole 16 which can be in one-to-one correspondence with each locking screw hole 15, the bolt 14 is arranged inside the guiding screw hole 16, the bolt 14 can extend towards the inside of each locking screw hole 15, one side of the lower end of the adjusting rod 13 is provided with a connecting column 17, the inside of the front three-wheel walking assembly 6 can be rotatably arranged on the connecting column 17, and the height of the front three-wheel assembly can be manually adjusted according, by manually turning the bolt 14 and then manually turning the dispensing rod, the adjustment rod 13 is extended and retracted within the adjustment sleeve 12 until the adjustment rod 13 is stretched to a desired position and stopped, and then manually turning the bolt 14, the bolt 14 is threadedly locked with the guide screw hole 16 and the locking screw hole 15, respectively.

Every preceding tricycle running gear 6 includes A-frame 18 and three gyro wheel 19 respectively, A-frame 18 is vertical setting, three gyro wheel 19 is vertical respectively and can the pivoted setting in every corner of A-frame 18, the center department of A-frame 18 is equipped with the bearing, the one end of every hinge post can the pivoted respectively insert the bearing inner circle of locating on every preceding tricycle running gear 6, the both ends of rotatory guide arm 10 can the pivoted respectively insert the bearing inner circle of locating on every back tricycle running gear, when the upstairs and downstairs remove, it is rotatory through A-frame 18, and drive three gyro wheel 19 and move on the stair alternately, and then form the action of climbing the building.

The self-locking assembly 8 comprises an inverted U-shaped sleeve frame 20, a rotating rod 21, a locking column 22 and a locking box 23, wherein the inverted U-shaped sleeve frame 20 is vertically arranged at the bottom of the fixed support 11, a first rotating sleeve 24 and a second rotating sleeve 25 are respectively arranged at two ends of the bottom of the inverted U-shaped support, the rotating rod 21 and the locking box 23 are respectively arranged inside the inverted U-shaped sleeve frame 20, the locking box 23 is vertically and fixedly arranged on the inner side wall of the second rotating sleeve 25, the rotating rod 21 is horizontally arranged, one end of the rotating rod 21 can be inserted into the inner ring of the first rotating sleeve 24 in a sliding manner, the locking column 22 is horizontally and fixedly arranged at one end, close to the locking box 23, of the rotating rod 21, a locking hole 26 capable of allowing the locking column 22 to penetrate is arranged on the locking box 23, two limiting blocks 27 capable of moving in opposite directions are arranged inside the locking box 23, one end, which is adjacent to each limiting block 27 is of an arc-shaped structure, an inner groove 28 for allowing each, the inside of every inside groove 28 is equipped with first spring 29 respectively, the both ends of every first spring 29 respectively with the one end of every stopper 27 and the inner wall conflict of inside groove 28, be equipped with the conflict grooving 30 that is used for supplying each spacing slider to contradict on the locking post 22, when every back gyro wheel 9 locks, extend in locking post 22 to the locking hole 26 of locking case 23 through manual messenger's locking post, every first spring 29 contradicts stopper 27 and makes stopper 27 conflict grooving 30 on the locking post 22 lock, make the locking post 22 unable rotation, make bull stick 21, main synchronizing wheel 33, vice synchronizing wheel 35, rotatory guide arm 10 and every back gyro wheel 9 unable rotation simultaneously.

The rotating rod 21 is provided with a fixed sleeve 31, the fixed sleeve 31 is provided with an inverted U-shaped plate 32, the inverted U-shaped plate 32 is internally provided with a main synchronizing wheel 33, the main synchronizing wheel 33 can be rotatably arranged inside the inverted U-shaped plate 32, the center of the main synchronizing wheel 33 is provided with an avoidance round hole for avoiding the fixed sleeve 31, the avoidance round hole is provided with a limit strip, the fixed sleeve 31 is provided with a limit groove 34 for the limit strip to slide, the rotating guide rod 10 is provided with an auxiliary synchronizing wheel 35, the auxiliary synchronizing wheel 35 is fixedly connected with the rotating guide rod 10, the main synchronizing wheel 33 is in transmission connection with the auxiliary synchronizing wheel 35 through a synchronous belt, when each rear roller 9 moves, the rotating guide rod 10 is driven to rotate at the same time, the rotating guide rod 10 drives the main synchronizing wheel 33 to rotate through the auxiliary synchronizing wheel 35, the main synchronizing wheel 33 drives the rotating rod 21 to rotate through the limit groove 34 on the limit strip, the limiting groove 34 and the limiting strip are arranged so as not to affect the movement of the main synchronizing wheel 33 when the rotating rod 21 and the locking column 22 move towards the inside of the locking box 23.

A second spring 36 is arranged at one end of the rotating rod 21 far away from the locking column 22, a clamping column 37 is further arranged at one end of the rotating rod 21 far away from the locking column 22, one end of the clamping column 37 is fixedly connected with one end of the rotating guide rod 10, two ends of the second spring 36 are respectively abutted against the clamping column 37 and the side wall of one of the extension sleeves, a limiting column 38 is arranged at one end of the rotating rod 21 close to the fixing sleeve 31, one end of the limiting column 38 can be abutted against the inner wall of one of the extension sleeves of the two extension sleeves close to the second spring 36, an extension frame 39 is arranged at one end of the fixing frame close to the clamping column 37, a clamping rod 40 is arranged at one end of the extension frame 39, one end of the clamping rod 40 is hinged to one end of the extension frame 39, a clamping groove 41 for clamping the clamping rod 40 is arranged on the clamping column 37, when the baby carriage needs to be locked during the upstairs or on the road, the joint post 37 drives bull stick 21 and locking post 22 respectively and extends to the inside of locking box 23, and when locking the back, manual pull joint pole 40 makes the joint groove 41 on the one end of joint pole 40 and the joint post 37 carry out the joint, and then locks, and when not needing the locking, the second spring 36 that sets up resets joint post 37, bull stick 21 and locking post 22, and the spacing post 38 of setting is contradicted one of them lateral wall that extends the cover and is carried on spacingly.

One side that the link is close to joint pole 40 is equipped with U type joint piece 42, and setting that the one end of joint pole 40 can be dismantled is on U type joint piece 42, the one end of U type joint piece 42 and the lateral wall fixed connection of link, and the U type joint piece 42 of setting can carry out the joint with joint pole 40 through U type joint piece 42 for having elastic flexible glue material.

The working principle is as follows: according to the height of the stair, the height of the front three-wheel assembly can be manually adjusted, the bolt 14 is manually twisted, the adjusting rod is manually shifted, the adjusting rod 13 extends and retracts in the adjusting loop rod 12 until the adjusting rod 13 is stretched to a required position and stops, then the bolt 14 is manually twisted, the bolt 14 is respectively locked with the guide screw hole 16 and the locking screw hole 15 in a threaded mode, when the adjusting rod moves up and down the stairs, the triangular support 18 rotates and drives the three rollers 19 to move in a crossed mode on the stairs, and therefore the stair climbing action is formed, when the stroller moves up the stairs or on the road, the stroller needs to be locked, at the moment, the clamping column 37 is manually pushed, the clamping column 37 respectively drives the rotating rod 21 and the locking column 22 to extend towards the inside of the locking box 23, after the locking, the clamping rod 40 is manually pulled, one end of the clamping rod 40 is clamped with the clamping groove 41 on the clamping column 37, and then the locking is, when the locking is not needed, the clamping column 37, the rotating rod 21 and the locking column 22 are reset by the arranged second spring 36, the arranged limiting column 38 abuts against the side wall of one of the extending sleeves for limiting, the arranged U-shaped clamping block 42 is made of elastic soft rubber, the clamping rod 40 can be clamped by the U-shaped clamping block 42, when each rear roller 9 moves, the rotating guide rod 10 is driven to rotate at the same time, the rotating guide rod 10 drives the main synchronizing wheel 33 to rotate through the auxiliary synchronizing wheel 35, the main synchronizing wheel 33 abuts against the limiting groove 34 on the fixing sleeve 31 through the limiting strip, the fixing sleeve 31 drives the rotating rod 21 to rotate, the arranged limiting groove 34 and the limiting strip are arranged, when the rotating rod 21 and the locking column 22 move towards the inside of the locking box 23, the main synchronizing wheel 33 cannot be influenced to move, when each rear roller 9 is locked, the locking column 22 is manually extended into the locking hole 26 of the locking box 23, each first spring 29 abuts against the stop block 27 to make the stop block 27 abut against the contact slot 30 on the locking column 22 for locking, so that the locking column 22 cannot rotate, and at the same time, the rotating rod 21, the main synchronizing wheel 33, the auxiliary synchronizing wheel 35, the rotating guide rod 10 and each rear roller 9 cannot rotate.

It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.

Claims

1. A baby carriage with stair auxiliary function comprises a cradle (1) and is characterized in that: the cradle is characterized by further comprising a front wheel travelling mechanism and a rear wheel self-locking mechanism, wherein the bottom of the cradle (1) is provided with a mounting plate (2), one end of the cradle (1) is provided with an inverted U-shaped handrail (3), the bottom of the mounting plate (2) is provided with an inverted T-shaped connecting frame (4), two ends of the handrail (3) are respectively fixedly connected with two ends of the connecting frame (4), the front wheel travelling mechanism comprises two lifting components (5) and two front three-wheel travelling components (6), the two lifting components (5) are symmetrical and are arranged at one end of the bottom of the mounting plate (2) at intervals, each front three-wheel travelling component (6) is respectively arranged at the bottom of each lifting component (5), the self-locking mechanism comprises an H-shaped rear wheel support (7) and a self-locking component (8), one end of the rear wheel support (7) is fixedly connected with the bottom of the mounting plate (2), two ends of the bottom of the, be equipped with between two rear roller (9) rotating guide (10), the both ends of rotating guide (10) can the pivoted respectively run through the inner wall and the center department fixed connection of outer wall and every rear roller (9) of rear wheel support (7), be equipped with between rear wheel support (7) and link (4) fixed bolster (11), the both ends of fixed bolster (11) respectively with the center department fixed connection of rear wheel support (7) and rear wheel support (7), auto-lock subassembly (8) set up the bottom at fixed bolster (11), the work end and the rotating guide (10) transmission of auto-lock subassembly (8) are connected.

2. The stroller of claim 1, wherein: each lifting assembly (5) comprises an adjusting loop bar (12), an adjusting bar (13) and a bolt (14), the adjusting loop bar (12) is vertically arranged at the bottom of the mounting plate (2), the adjusting bar (13) can be arranged inside the adjusting loop bar (12) in a sliding manner, and the one end of adjusting pole (13) is extended to the outside of adjusting loop bar (12), be equipped with locking screw (15) that a plurality of set up along the vertical direction distribution of adjusting pole (13) on adjusting pole (13), the lower extreme one side of adjusting loop bar (12) is equipped with one can with every direction screw (16) of locking screw (15) one-to-one, bolt (14) set up the inside at direction screw (16), bolt (14) can extend to the inside of every locking screw (15) respectively, the lower extreme one side of adjusting pole (13) is equipped with spliced pole (17), the setting that can rotate of the inside of preceding tricycle running gear (6) is on spliced pole (17).

3. A stroller with stair-climbing functionality according to claim 2, wherein: every preceding tricycle running gear (6) includes A-frame (18) and three gyro wheel (19) respectively, A-frame (18) are vertical setting, three gyro wheel (19) are respectively vertical and can the pivoted setting in every corner of A-frame (18), the center department of A-frame (18) is equipped with the bearing, the one end of every hinge post can be the pivoted respectively insert the bearing inner circle of locating on every preceding tricycle running gear (6), the both ends of swivel guide arm (10) can the pivoted respectively insert the bearing inner circle of locating on every back tricycle running gear.

4. A stroller with stair-climbing functionality according to claim 3, wherein: the self-locking assembly (8) comprises an inverted U-shaped sleeve frame (20), a rotating rod (21), a locking column (22) and a locking box (23), the inverted U-shaped sleeve frame (20) is vertically arranged at the bottom of the fixed support (11), a first rotating sleeve (24) and a second rotating sleeve (25) are respectively arranged at two ends of the bottom of the inverted U-shaped support, the rotating rod (21) and the locking box (23) are respectively arranged in the inverted U-shaped sleeve frame (20), the locking box (23) is vertically and fixedly arranged on the inner side wall of the second rotating sleeve (25), the rotating rod (21) is horizontally arranged, one end of the rotating rod (21) can be slidably inserted into an inner ring of the first rotating sleeve (24), the locking column (22) is horizontally and fixedly arranged at one end, close to the locking box (23), a locking hole (26) capable of allowing the locking column (22) to pass through is formed in the locking box (23), two limiting blocks (27) capable of moving in opposite directions are arranged in the locking box (23), the adjacent one end of two stopper (27) is the arc structure, and the inside of locking case (23) is equipped with supplies gliding inside groove (28) of every stopper (27), and the inside of every inside groove (28) is equipped with first spring (29) respectively, and the both ends of every first spring (29) are contradicted with the inner wall of the one end of every stopper (27) and inside groove (28) respectively, are equipped with conflict grooving (30) that are used for supplying every limit slide to contradict on locking post (22).

5. The stroller of claim 4, wherein: be equipped with fixed cover (31) on bull stick (21), be equipped with on fixed cover (31) and fall U template (32), the inside of this falling U template (32) is equipped with main synchronizing wheel (33), this main synchronizing wheel (33) can the pivoted setting in the inside of falling U template (32), the center department of main synchronizing wheel (33) is equipped with the round hole of dodging that is used for dodging fixed cover (31), be equipped with a spacing on should dodging the round hole, be equipped with on fixed cover (31) and be used for supplying gliding spacing groove (34) of spacing, be equipped with vice synchronizing wheel (35) on rotatory guide arm (10), this vice synchronizing wheel (35) and rotatory guide arm (10) fixed connection, main synchronizing wheel (33) are connected through hold-in range and vice synchronizing wheel (35) transmission.

6. The stroller of claim 5, wherein: a second spring (36) is arranged at one end of the rotating rod (21) far away from the locking column (22), a clamping column (37) is also arranged at one end of the rotating rod (21) far away from the locking column (22), one end of the clamping column (37) is fixedly connected with one end of the rotating guide rod (10), two ends of the second spring (36) are respectively abutted against the clamping column (37) and the side wall of one of the extending sleeves, one end of the rotating rod (21) close to the fixed sleeve (31) is provided with a limiting column (38), one end of the limiting column (38) can be abutted against the inner wall of one of the two extending sleeves close to the second spring (36), one end of the fixing frame close to the clamping column (37) is provided with an extending frame (39), one end of the extending frame (39) is provided with a clamping rod (40), one end of the clamping rod (40) is hinged to one end of the extending frame (39), and a clamping groove (41) for clamping the clamping rod (40) is formed in the clamping column (37).

7. The stroller of claim 6, wherein: one side that the link is close to joint pole (40) is equipped with U type joint piece (42), and setting that the one end of joint pole (40) can be dismantled is on U type joint piece (42), the lateral wall fixed connection of the one end of U type joint piece (42) and link.