CN111959639A

CN111959639A - Refrigerator carrying device capable of being used for going upstairs and downstairs

Info

Publication number: CN111959639A
Application number: CN202010912129.5A
Authority: CN
Inventors: 华怀艺
Original assignee: Fuzhou Changle Meister Electronic Technology Co ltd
Current assignee: Fuzhou Changle Meister Electronic Technology Co ltd
Priority date: 2020-09-02
Filing date: 2020-09-02
Publication date: 2020-11-20

Abstract

The invention discloses a refrigerator carrying device which can be used for going upstairs and downstairs; including the main tank body, the upper and lower both sides all are equipped with bilateral symmetry's the wheel chamber of marcing in the main tank body, be equipped with bevel gear chamber in the main tank body, the bevel gear chamber left and right sides is equipped with the flexible chamber of support frame that uses bevel gear chamber as central bilateral symmetry, the support frame slip chamber that the flexible chamber of support frame upper and lower both sides all communicate and are equipped with bilateral symmetry, the flexible intracavity of support frame is equipped with lifting mechanism, be equipped with the belt chamber of marcing between support frame slip chamber and the wheel chamber of marcing, the synchronous lifting main tank body of bilateral branch supporting wheel stage by stage, make when going up stairs the transport refrigerator can remain the horizontality throughout, thereby make the steady safe stair of refrigerator, the manpower has been saved greatly and the transport, the potential safety hazard when avoiding artifical transport refrigerator to go up stairs simultaneously, the.

Description

Refrigerator carrying device capable of being used for going upstairs and downstairs

Technical Field

The invention relates to the technical field of refrigerators, in particular to a refrigerator carrying device capable of going up and down stairs.

Background

Refrigerator-a kind of refrigeration plant that keeps invariable microthermal, with the development of national economy, the refrigerator almost becomes the indispensable household electrical appliances in resident's family, but the big household electrical appliances of refrigerator is more problematic and serious when carrying, especially to the resident that the elevator is not had to well low floor, the transport of present refrigerator generally leans on small-size hoisting equipment, but to the resident that this kind of window is less can't use hoisting equipment to carry the refrigerator into the room, can only stair select the manual handling refrigerator, this has undoubtedly increased manpower and the potential safety hazard when carrying the refrigerator.

Disclosure of Invention

Aiming at the technical defects, the invention provides a refrigerator carrying device capable of going up and down stairs, which can overcome the defects.

The invention relates to a refrigerator carrying device capable of being used for going upstairs and downstairs, which comprises a main box body, wherein the upper side and the lower side in the main box body are respectively provided with a bilaterally symmetrical travelling wheel cavity, a bevel gear cavity is arranged in the main box body, the left side and the right side of the bevel gear cavity are respectively provided with a support frame telescopic cavity which is bilaterally symmetrical by taking the bevel gear cavity as a center, the upper side and the lower side of the support frame telescopic cavity are respectively communicated with a support frame sliding cavity which is bilaterally symmetrical, a lifting mechanism is arranged in the support frame telescopic cavity, a travelling belt cavity is arranged between the support frame sliding cavity and the travelling wheel cavity, the end wall of the travelling wheel cavity close to the side end of the support frame telescopic cavity is rotationally matched and connected with a travelling wheel shaft which extends to the travelling belt cavity in the side direction close to the travelling belt cavity and extends to the travelling wheel, the traveling wheel shaft is fixedly connected with a traveling belt wheel positioned in the traveling belt cavity by the tail end of the side of the telescopic cavity of the support frame, the upper end wall and the lower end wall of the traveling belt cavity are both communicated with a tensioning wheel cavity, the lower side of the traveling belt cavity is provided with a motor fixedly connected with the main box body, the upper side of the bevel gear cavity is provided with a sliding bevel gear cavity positioned at the lower side of the traveling belt cavity, the upper end surface of the motor is fixedly connected with a motor shaft which extends upwards and penetrates through the upper end wall of the traveling belt cavity at the lower side, the tensioning wheel cavity at the lower side, the sliding bevel gear cavity at the upper side, the traveling belt cavity at the upper side and the tensioning wheel cavity at the upper side, a tensioning wheel sliding sleeve positioned in the tensioning wheel cavity is connected on the motor shaft in a spline fit manner, a tensioning wheel is fixedly connected on the tensioning wheel sliding sleeve, and a tensioning wheel electromagnet positioned between, and a tension wheel spring is fixedly connected between the tension wheel electromagnet and the tension wheel.

On the basis of the technical scheme, the lifting mechanism comprises an outer foot supporting frame, wherein the outer foot supporting frame is hinged with an inner supporting hinged frame which is symmetrical up and down, the outer foot supporting frame is connected with the supporting frame sliding cavity in a sliding fit manner, the outer foot supporting frame is provided with an inner foot supporting frame which is connected with the supporting frame sliding cavity in a sliding fit manner and close to the bevel gear cavity side, the inner foot supporting frame is hinged with an outer supporting hinged frame which is symmetrical up and down and positioned between the inner supporting hinged frame and the outer supporting hinged frame, the inner supporting hinged frame is hinged with the outer supporting hinged frame, a supporting wheel shaft is fixedly connected in the lower end surface of the inner supporting hinged frame and the outer supporting hinged frame, the upper side and the lower side of the supporting wheel shaft are respectively connected with a supporting wheel which is symmetrical up and down in a rotating fit manner, a right sliding cavity is arranged in the outer foot supporting frame, and a left sliding cavity is arranged in the inner foot supporting frame in a left-right through manner.

On the basis of the technical scheme, end face tooth cavities which are bilaterally symmetrical by taking the bevel gear cavity as a center are arranged on the left side and the right side of the bevel gear cavity, a left screw shaft which extends leftwards into the left side of the support frame telescopic cavity and rightwards into the left side of the support frame telescopic cavity and extends through the left side right sliding cavity, the left side left sliding cavity and the left side end face tooth cavity into the bevel gear cavity is connected in a matched manner through a left screw nut, a right screw shaft which extends rightwards into the right side of the support frame telescopic cavity and extends leftwards into the right side of the support frame telescopic cavity and extends through the right side right sliding cavity, the right side left sliding cavity and the right side end face tooth cavity into the bevel gear cavity is connected in a matched manner through a right screw nut, a pressing block cavity with a left opening is arranged, the right end face of the pressing block is fixedly connected with a pull rope, the left end wall of the end face tooth cavity on the right side is in rotary fit connection with an end face tooth shaft which extends leftwards into the bevel gear cavity and extends rightwards into the end face tooth cavity on the right side, the left side and the right side of the end face tooth cavity are in power fit connection with advancing belts between the advancing belt wheels, the telescopic cavity of the support frame is close to an induction block fixedly connected in the side end wall of the bevel gear cavity, and the left end face of the main.

On the basis of the technical scheme, a sliding shaft sleeve seat is arranged in the end face tooth cavity, a shaft sleeve rotating cavity with an opening towards the direction close to the bevel gear cavity side is arranged in the sliding shaft sleeve seat, the side, far away from the bevel gear cavity, of the shaft sleeve rotating cavity is communicated with a screw shaft through cavity with an opening towards the direction far away from the bevel gear cavity side, a shaft sleeve seat spring is fixedly connected between the sliding shaft sleeve seat and the end face tooth cavity far away from the side end wall of the bevel gear cavity, the other end of the pull rope is fixedly connected with the side end face, far away from the bevel gear cavity, of the sliding shaft sleeve seat in a rotating matching mode, a sliding shaft sleeve is connected in a rotating matching mode in the shaft sleeve rotating cavity, the sliding shaft sleeve on the left side is connected with the left screw shaft in a spline matching mode, the sliding shaft sleeve is connected with the right screw shaft in a spline matching mode, sliding end face teeth are fixedly connected on The left screw shaft penetrates through the left screw shaft cavity, the tail end of the left side of the rotating shaft sleeve is fixedly connected with left end face teeth capable of being meshed with the sliding end face teeth, the tail end of the right side of the rotating shaft sleeve is fixedly connected with a left bevel gear, the tail end of the right side of the left screw shaft is fixedly connected with a small bevel gear, and the small bevel gear is located on the right side of the left bevel gear.

On the basis of the technical scheme, a driving bevel gear which is positioned in the bevel gear cavity and is meshed with the left bevel gear is fixedly connected to the motor shaft, the driving bevel gear is positioned on the upper side of the bevel pinion, a lower sliding shaft sleeve which is positioned in the bevel gear cavity is connected to the motor shaft in a spline fit manner, the lower sliding shaft sleeve is positioned on the lower side of the bevel pinion, a lower electromagnet which is positioned in the bevel gear cavity and is positioned on the lower side of the lower sliding shaft sleeve is fixedly connected to the motor shaft, a lower sliding spring is fixedly connected between the lower electromagnet and the lower sliding shaft sleeve, a lower sliding bevel gear which can be meshed with the bevel pinion is fixedly connected to the lower sliding shaft sleeve, a right bevel gear which is meshed with the driving bevel gear is fixedly connected to the left end of the end face gear shaft, and right end face teeth which can be meshed with the right lower sliding, an upper bevel gear located in the sliding bevel gear cavity is fixedly connected to the motor shaft, a belt wheel cavity is arranged on the right side of the sliding bevel gear cavity, a belt wheel shaft extending leftwards into the sliding bevel gear cavity and rightwards into the belt wheel cavity is connected to the right end wall of the sliding bevel gear cavity in a rotating fit mode, the right lead screw shaft penetrates through the belt wheel cavity to the right end face tooth cavity, and an upper sliding shaft sleeve located in the sliding bevel gear cavity is connected to the belt wheel shaft in a spline fit mode.

On the basis of the technical scheme, an upper electromagnet located between the upper sliding shaft sleeve and the right end wall of the sliding bevel gear cavity is fixedly connected to the motor shaft, an upper sliding spring is fixedly connected between the upper sliding shaft sleeve and the upper electromagnet, an upper sliding bevel gear capable of being meshed with the upper bevel gear is fixedly connected to the upper sliding shaft sleeve, a driving pulley is fixedly connected to the tail end of the right side of the pulley shaft, a driven pulley located in the pulley cavity is fixedly connected to the right lead screw shaft, and a belt is connected between the driven pulley and the driving pulley in a power fit mode.

The invention has the beneficial effects that: the left and right supporting wheels synchronously lift the main box body in stages, so that the refrigerator can be carried all the time when going upstairs, the refrigerator can go upstairs stably and safely, manpower is greatly saved for carrying, meanwhile, potential safety hazards when the refrigerator is carried by manpower when going upstairs are avoided, meanwhile, the device is simple in structure, personnel are not needed to carry out complicated operation, and the efficiency of personnel operation is greatly increased.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural view of a refrigerator transportation apparatus for ascending and descending stairs according to the present invention;

FIG. 2 is a schematic sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic sectional view taken along line B-B in FIG. 1;

fig. 4 is an enlarged schematic view of the structure at C in fig. 1.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

As shown in fig. 1-4, a refrigerator carrying device for going upstairs and downstairs of the device of the present invention comprises a main box 10, wherein the main box 10 is provided with left and right symmetrical traveling wheel cavities 36 at upper and lower sides thereof, the main box 10 is provided with a bevel gear cavity 54, the bevel gear cavity 54 is provided with support frame telescopic cavities 33 at left and right sides thereof, the bevel gear cavity 54 is centered on the bevel gear cavity 54, the support frame telescopic cavities 33 are communicated with upper and lower sides thereof and provided with vertically symmetrical support frame sliding cavities 34, the support frame telescopic cavities 33 are provided with lifting mechanisms, a traveling belt cavity 47 is provided between the support frame sliding cavities 34 and the traveling wheel cavity 36, the traveling wheel cavity 36 is rotatably connected to a traveling wheel shaft 11 which is close to the side end wall of the support frame telescopic cavity 33, extends toward the traveling belt cavity 47 and extends into the traveling belt cavity 47 and extends toward the side far away from the support frame telescopic cavity 33, a traveling wheel 12 positioned in the traveling wheel cavity 36 is fixedly connected to the traveling wheel shaft 11, a traveling belt wheel 35 positioned in the traveling belt cavity 47 is fixedly connected to the end of the traveling wheel shaft 11 near the side of the support frame telescopic cavity 33, tensioning wheel cavities 49 are respectively communicated with the upper end walls of the traveling belt cavities 47 at the upper and lower sides, a motor 26 fixedly connected with the main box body 10 is arranged at the lower side of the traveling belt cavity 47 at the lower side, a sliding bevel gear cavity 55 positioned at the lower side of the traveling belt cavity 47 at the upper side of the bevel gear cavity 54 is arranged at the upper side, a motor shaft 16 which extends upwards and penetrates through the traveling belt cavity 47 at the lower side, the tensioning wheel cavity 49 at the lower side, the sliding bevel gear cavity 55, the traveling belt cavity 47 at the upper side and the tensioning wheel cavity 49 at the upper side is fixedly connected to the upper end wall of the tensioning wheel cavity 49 at the upper side of the motor 26, and a tensioning wheel 18 positioned in the tensioning wheel cavity 49 is connected to the motor shaft, a tension pulley 14 is fixedly connected to the tension pulley sliding sleeve 18, a tension pulley electromagnet 15 located between the tension pulley 14 and the bottom wall of the tension pulley cavity 49 is also fixedly connected to the motor shaft 16, and a tension pulley spring 17 is fixedly connected between the tension pulley electromagnet 15 and the tension pulley 14.

In addition, in one embodiment, the lifting mechanism includes an outer foot supporting frame 32, an inner supporting hinged frame 25 which is symmetrical up and down is hinged on the outer foot supporting frame 32, the outer foot supporting frame 32 is connected with the supporting frame sliding cavity 34 in a sliding fit manner, an inner foot supporting frame 24 which is connected with the supporting frame sliding cavity 34 in a sliding fit manner is arranged on the outer foot supporting frame 32 close to the bevel gear cavity 54 side, an outer supporting hinged frame 29 which is symmetrical up and down and is positioned between the upper and lower inner supporting hinged frames 25 is hinged in the inner foot supporting frame 24, the inner supporting hinged frame 25 is hinged with the outer supporting hinged frame 29, a supporting wheel shaft 42 is fixedly connected in the lower end face of the inner supporting hinged frame 25 and the outer supporting hinged frame 29, supporting wheels 20 which are symmetrical up and down are connected on the upper and lower sides of the supporting wheel shaft 42 in a rotating fit manner, a right sliding cavity 22 is arranged in the outer foot supporting frame 32 in, support frame nut 21 is fixedly connected with in the right side sliding chamber 22, it is equipped with left sliding chamber 23 to link up about in the interior foot support frame 24.

In addition, in one embodiment, the bevel gear cavity 54 is provided with end face tooth cavities 37 on the left and right sides, which are bilaterally symmetrical about the bevel gear cavity 54, the left support frame nut 21 is connected with the left screw shaft 30 in a threaded fit manner, which extends leftwards into the left support frame expansion cavity 33, extends rightwards through the left right sliding cavity 22, the left sliding cavity 23 and the left end face tooth cavity 37 to the bevel gear cavity 54, the right support frame nut 21 is connected with the right screw shaft 83 in a threaded fit manner, which extends rightwards into the right support frame expansion cavity 33, extends leftwards through the right sliding cavity 22, the right left sliding cavity 23 and the right end face tooth cavity 37 to the bevel gear cavity 54, the left side of the support frame expansion cavity 33 is provided with a left-opened press block cavity 46, and the press block 45 is connected in a sliding fit manner in the press block cavity 46, briquetting 45 with fixedly connected with briquetting spring 44 between the 46 diapalls in briquetting chamber, briquetting 45 right-hand member face fixedly connected with stay cord 43, right side the end face tooth chamber 37 left end wall internal rotation cooperation is connected with and extends to left bevel gear chamber 54 is inside to extend to the right side end gear shaft 41 in the end face tooth chamber 37, the left and right sides power fit is connected with the belt 13 of marcing between the band pulley 35 of marcing, support frame expansion chamber 33 is close to fixedly connected with response piece 67 in the end wall of bevel gear chamber 54 side, fixedly connected with 40 in the main tank 10 left end face.

In addition, in one embodiment, a sliding shaft sleeve seat 38 is disposed in the end face tooth chamber 37, a shaft sleeve rotating chamber 77 which is opened toward the side close to the bevel gear chamber 54 is disposed in the sliding shaft sleeve seat 38, a screw shaft through chamber 78 which is opened toward the side away from the bevel gear chamber 54 is disposed in communication with the side of the shaft sleeve rotating chamber 77 away from the bevel gear chamber 54, a shaft sleeve seat spring 79 is fixedly connected between the sliding shaft sleeve seat 38 and the end face tooth chamber 37 which is away from the side of the bevel gear chamber 54, the other end of the pull rope 43 is fixedly connected with the end face of the sliding shaft sleeve seat 38 which is away from the bevel gear chamber 54, a sliding shaft sleeve 80 is rotatably connected in the shaft sleeve rotating chamber 77, the sliding shaft sleeve 80 on the left side is in spline fit with the left screw shaft 30, and the sliding shaft sleeve 80 on the right side is in spline fit with the right screw shaft 83, the sliding shaft sleeve 80 is fixedly connected with sliding end face teeth 81, the right end wall of the end face tooth cavity 37 on the left side is connected with a rotating shaft sleeve 76 which extends leftwards to the left side and extends rightwards to the bevel gear cavity 54 in a rotating and matching mode, a left screw shaft cavity 50 is arranged in the rotating shaft sleeve 76, the left screw shaft 30 penetrates through the left screw shaft cavity 50, the left end face teeth 82 which can be meshed with the sliding end face teeth 81 are fixedly connected to the left end of the left side of the rotating shaft sleeve 76, a left bevel gear 52 is fixedly connected to the right end of the rotating shaft sleeve 76, a small bevel gear 53 is fixedly connected to the right end of the left screw shaft 30, and the small bevel gear 53 is located on the right side of the left bevel gear 52.

In addition, in one embodiment, a driving bevel gear 74 located in the bevel gear cavity 54 and engaged with the left bevel gear 52 is fixedly connected to the motor shaft 16, the driving bevel gear 74 is located on the upper side of the bevel pinion 53, a lower sliding shaft sleeve 71 located in the bevel gear cavity 54 is connected to the motor shaft 16 in a spline fit manner, the lower sliding shaft sleeve 71 is located on the lower side of the bevel pinion 53, a lower electromagnet 73 located in the bevel gear cavity 54 and located on the lower side of the lower sliding shaft sleeve 71 is fixedly connected to the motor shaft 16, a lower sliding spring 72 is fixedly connected between the lower electromagnet 73 and the lower sliding shaft sleeve 71, a lower sliding bevel gear 70 capable of being engaged with the bevel pinion 53 is fixedly connected to the lower sliding shaft sleeve 71, a right bevel gear 69 engaged with the driving bevel gear 74 is fixedly connected to the left end of the face gear shaft 41, the right end of the end face gear shaft 41 is fixedly connected with a right end face gear 68 capable of being meshed with the right lower sliding shaft sleeve 71, the motor shaft 16 is fixedly connected with an upper bevel gear 57 positioned in the sliding bevel gear cavity 55, the right side of the sliding bevel gear cavity 55 is provided with a pulley cavity 64, the right end wall of the sliding bevel gear cavity 55 is rotatably and cooperatively connected with a pulley shaft 63 which extends leftwards to the sliding bevel gear cavity 55 and rightwards to the pulley cavity 64, the right lead screw shaft 83 penetrates through the pulley cavity 64 to the right end face gear cavity 37, and the pulley shaft 63 is in spline fit connection with an upper sliding shaft sleeve 59 positioned in the sliding bevel gear cavity 55.

In addition, in one embodiment, an upper electromagnet 61 is fixedly connected to the motor shaft 16 and located between the upper sliding bushing 59 and the right end wall of the sliding bevel gear cavity 55, an upper sliding spring 60 is fixedly connected between the upper sliding bushing 59 and the upper electromagnet 61, an upper sliding bevel gear 58 capable of meshing with the upper bevel gear 57 is fixedly connected to the upper sliding bushing 59, a driving pulley 62 is fixedly connected to the right end of the pulley shaft 63, a driven pulley 66 located in the pulley cavity 64 is fixedly connected to the right lead screw shaft 83, and a belt 65 is connected between the driven pulley 66 and the driving pulley 62 in a power fit manner.

The applicant shall now specifically describe a refrigerator handling apparatus usable for ascending and descending stairs according to the present application with reference to the accompanying fig. 1-4 and the above description: in an initial state, the tension pulley electromagnet 15 is de-energized, the tension pulley sliding sleeve 18 retracts into the tension pulley cavity 49 under the pulling force of the tension pulley spring 17, so that the tension pulley 14 retracts into the tension pulley cavity 49, the pressing block 45 extends out of the pressing block cavity 46 under the elastic force of the pressing block spring 44, the sliding shaft sleeve seat 38 moves close to the end face tooth cavity 37 away from the side end wall of the bevel gear cavity 54 under the pulling force of the pulling rope 43, so that the sliding shaft sleeve 80 moves close to the end face wall away from the side end wall of the bevel gear cavity 54, so that the left sliding end face tooth 81 is not meshed with the left end face tooth 82, the right sliding end face tooth 81 is not meshed with the right end face tooth 68, the lower electromagnet 73 is de-energized, the lower sliding shaft sleeve 71 moves downward under the pulling force of the lower sliding spring 72, so that the lower sliding bevel gear 70 is not meshed with the bevel gear 53, the upper electromagnet 61 is de-energized, so that the upper, so that the upper sliding bevel gear 58 is not meshed with the upper bevel gear 57, and the left and right supporting wheels 20 are positioned in the supporting frame telescopic cavity 33; when the refrigerator starts to work, the refrigerator is placed on the upper end face of the main box body 10, the motor 26 is started, the motor shaft 16 is driven to rotate, the tensioning wheel sliding sleeve 18 is driven to rotate, the tensioning wheel 14 is driven to rotate, the tensioning wheel electromagnet 15 electrically repels the tensioning wheel sliding sleeve 18 to downwards move by overcoming the tension of the tensioning wheel spring 17 at the moment, the tensioning wheel 14 is driven to downwards move to the advancing belt cavity 47, the advancing belt 13 is vertically stretched, the tensioning wheel 14 rotates to drive the advancing belt wheel 35 to rotate through the advancing belt 13, the advancing wheel shaft 11 is driven to rotate, the advancing wheel 12 is driven to rotate, the main box body 10 is driven to left, when a step is touched, the step wall is touched by the pressing block 40, the tensioning wheel electromagnet 15 loses power, the main box body 10 stops moving, the pressing block 45 is pressed into the pressing block cavity 46, the pressing block spring 44 is compressed, the pull rope 43 is loosened, the sliding shaft sleeve seat 38 moves towards the, thereby driving the sliding sleeve 80 to move toward the side close to the upper bevel gear 57, so that the sliding end face teeth 81 move toward the side close to the upper bevel gear 57, so that the left sliding end face teeth 81 are engaged with the left end face teeth 82, the right sliding end face teeth 81 are engaged with the right end face teeth 68, the motor shaft 16 rotates to drive the drive bevel gear 74 to rotate, thereby driving the left bevel gear 52 to rotate, thereby driving the rotating sleeve 76 to rotate, thereby driving the left end face teeth 82 to rotate, thereby driving the sliding end face teeth 81 to rotate, thereby driving the sliding sleeve 80 to rotate, thereby driving the left screw shaft 30 to rotate, since the left screw shaft 30 is in threaded engagement with the left support frame nut 21, the left screw shaft 30 rotates to drive the left support frame nut 21 to move rightward, thereby driving the left support wheel 20 to move backward, and simultaneously the drive bevel gear 74 to rotate to drive the right bevel gear 69 to rotate, thereby rotating the end face gear shaft 41, thereby rotating the right end face gear 68, thereby driving the right sliding end face gear 81 to rotate, thereby driving the right screw shaft 83 to rotate, and due to the threaded fit between the right support frame nut 21 and the right screw shaft 83, the right screw shaft 83 rotates to bring the right support frame nut 21 to move leftward, thereby driving the right support wheel 20 to move backward, thereby simultaneously moving the right sliding cavities 22 on both sides, and when the support wheel 20 contacts the ground, driving the main box 10 to move forward under the action of a reaction force; when the main box 10 moves forward to exceed the step height, the press block 45 is separated from the step wall, so that the press block 45 extends out of the press block cavity 46 under the elastic force of the press block spring 44, the pull rope 43 is pulled, the sliding end face teeth 81 are simultaneously separated from the meshing with the left end face teeth 82 and the right end face teeth 68, the main box 10 stops moving, and simultaneously, the tension pulley electromagnet 15 is separated from the step wall, so that the tension pulley electromagnet 15 is electrified again, the main box 10 starts to move leftward, the lower electromagnet 73 is electrified and repelled, the lower sliding shaft sleeve 71 overcomes the elastic force of the lower sliding spring 72 to move upward, so as to drive the lower sliding bevel gear 70 to move upward to be meshed with the small bevel gear 53, at the moment, the motor shaft 16 rotates to drive the small bevel gear 53 to rotate reversely, so as to drive the left lead the left outer foot support frame 32 to be far away from the left inner foot support frame, therefore, the left supporting wheel 20 moves forwards, when the left inner leg supporting frame 24 moves to touch the left sensing block 67, the left supporting wheel 20 just moves into the left supporting frame telescopic cavity 33, the lower electromagnet 73 is powered off, and the lower sliding bevel gear 70 is disengaged from the small bevel gear 53, so that the supporting wheel 20 stops moving forwards, and at the moment, the right supporting wheel 20 still keeps the previous state, so that the aim of keeping the horizontal state of the main box body 10 when the front traveling wheel 12 reaches a step is fulfilled, and the stability of the refrigerator is guaranteed; when the left supporting wheel 20 is completely retracted into the left supporting frame telescopic cavity 33, the traveling wheel 12 just drives the main box body 10 to move to the next step wall, the pressing block 45 is pressed into the pressing block cavity 46 again, so that the left and right supporting wheels 20 move backwards, and the main box body 10 is driven to move forwards, so that the main box body 10 moves to be flush with the next step, at the moment, the left and right traveling wheels 12 fall onto the step, the upper bevel gear 57 is electrified, the right supporting wheel 20 is retracted into the right supporting frame telescopic cavity 33, the lower electromagnet 73 is electrified, the left supporting wheel 20 is retracted into the left supporting frame telescopic cavity 33, the upper bevel gear 57 and the lower electromagnet 73 are powered off, the left and right supporting wheels 20 stop moving, the traveling wheel 12 drives the main box body 10 to move leftwards, when touching the step wall, the pressing block 45 is pressed into the pressing block cavity 46, and the left and right supporting wheels 20 move backwards simultaneously, the main body 10 is horizontally supported to the next step, and the above-mentioned movement is repeated, thereby realizing that the main body 10 drives the refrigerator to move stably on the step.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a refrigerator handling device that can be used to walk up and down stairs, includes the main tank body, its characterized in that: the upper side and the lower side of the main box body are respectively provided with a bilaterally symmetrical traveling wheel cavity, the main box body is internally provided with a bevel gear cavity, the left side and the right side of the bevel gear cavity are respectively provided with a support frame telescopic cavity which is bilaterally symmetrical by taking the bevel gear cavity as a center, the upper side and the lower side of the support frame telescopic cavity are respectively communicated with a support frame sliding cavity which is bilaterally symmetrical, a lifting mechanism is arranged in the support frame telescopic cavity, a traveling belt cavity is arranged between the support frame sliding cavity and the traveling wheel cavity, the end wall of the traveling wheel cavity close to the side end of the support frame telescopic cavity is connected with a traveling wheel shaft which extends into the traveling belt cavity towards the side direction close to the traveling belt cavity and extends into the traveling wheel cavity away from the side direction of the support frame telescopic cavity, the traveling wheel shaft is fixedly connected with a traveling belt wheel which is positioned in the traveling belt cavity by the tail end of, a tensioning wheel cavity is communicated and arranged in the upper end wall of the travelling belt cavity on the upper side and the lower side, a motor fixedly connected with the main box body is arranged on the lower side of the travelling belt cavity on the lower side, the upper side of the bevel gear cavity is provided with a sliding bevel gear cavity which is positioned at the lower side of the upper traveling belt cavity, the upper end surface of the motor is fixedly connected with a motor shaft which extends upwards and penetrates through the upper end wall of the lower advancing belt cavity, the lower tensioning wheel cavity, the sliding bevel gear cavity, the upper advancing belt cavity and the upper tensioning wheel cavity to the upper tensioning wheel cavity, a tension wheel sliding sleeve positioned in the tension wheel cavity is connected on the motor shaft in a spline fit manner, a tension wheel is fixedly connected on the tension wheel sliding sleeve, and a tension wheel electromagnet positioned between a tension wheel and the bottom wall of the tension wheel cavity is fixedly connected to the motor shaft, and a tension wheel spring is fixedly connected between the tension wheel electromagnet and the tension wheel.

2. A refrigerator handling apparatus usable to ascend and descend stairs according to claim 1, wherein: the lifting mechanism comprises an outer foot supporting frame, wherein inner supporting hinged frames which are symmetrical up and down are hinged on the outer foot supporting frame, the outer foot supporting frame is connected with the sliding cavities of the supporting frames in a sliding fit manner, the outer foot supporting frame is provided with an inner foot supporting frame which is connected with the sliding cavities of the supporting frames in a sliding fit manner and is close to the side of the bevel gear cavity, outer supporting hinged frames which are symmetrical up and down and are positioned between the inner supporting hinged frames on the upper side and the lower side are hinged in the inner foot supporting frame, the inner supporting hinged frames are hinged with the outer supporting hinged frames, supporting wheel shafts are fixedly connected in the lower end faces of the inner supporting hinged frames and the outer supporting hinged frames, the upper sides and the lower sides of the supporting wheel shafts are respectively connected with supporting wheels which are symmetrical up and down in a rotating fit manner, right sliding cavities are arranged in the, and a left sliding cavity is arranged in the inner foot supporting frame in a left-right through manner.

3. A refrigerator handling apparatus usable to ascend and descend stairs according to claim 2, wherein: the left side and the right side of the bevel gear cavity are provided with end face tooth cavities which are bilaterally symmetrical by taking the bevel gear cavity as a center, a left support frame nut is in threaded fit connection with a left screw shaft which extends leftwards to the left side in the support frame telescopic cavity and extends rightwards to penetrate through the left side right sliding cavity, the left side left sliding cavity and the left side end face tooth cavity to the bevel gear cavity, a right support frame nut is in threaded fit connection with a right screw shaft which extends rightwards to the right side in the support frame telescopic cavity and extends leftwards to penetrate through the right side right sliding cavity, the right side left sliding cavity and the right side end face tooth cavity to the bevel gear cavity, the left side of the support frame telescopic cavity is provided with a pressing block cavity with a left opening, a pressing block is in sliding fit connection with the pressing block cavity, a pressing block spring is, the right side end face tooth chamber left end wall is connected with an end face tooth shaft which extends leftwards into the bevel gear chamber and rightwards extends to the right side end face tooth chamber in a rotating fit mode, the left side and the right side are connected with advancing belts in a power fit mode between the advancing belt wheels, the support frame telescopic cavity is close to an induction block fixedly connected in the bevel gear chamber side end wall, and the main box body left end face is fixedly connected in the main box body.

4. A refrigerator handling apparatus usable to ascend and descend stairs according to claim 3, wherein: a sliding shaft sleeve seat is arranged in the end face tooth cavity, a shaft sleeve rotating cavity with an opening towards the direction close to the bevel gear cavity side is arranged in the sliding shaft sleeve seat, the shaft sleeve rotating cavity is far away from the bevel gear cavity side and is communicated with a screw shaft through cavity with an opening towards the direction far away from the bevel gear cavity side, a shaft sleeve seat spring is fixedly connected between the sliding shaft sleeve seat and the end face tooth cavity far away from the bevel gear cavity side end wall, the other end of the pull rope is fixedly connected with the sliding shaft sleeve seat far away from the bevel gear cavity side end face, a sliding shaft sleeve is connected in a rotating matching mode in the shaft sleeve rotating cavity, the sliding shaft sleeve is connected with the left screw shaft in a spline matching mode on the left side, the sliding shaft sleeve is connected with the right screw shaft in a spline matching mode on the right side, sliding end face teeth are fixedly connected on the sliding shaft sleeve, the end face tooth cavity right end wall on the left The left screw shaft penetrates through the left screw shaft cavity, the tail end of the left side of the rotating shaft sleeve is fixedly connected with left end face teeth capable of being meshed with the sliding end face teeth, the tail end of the right side of the rotating shaft sleeve is fixedly connected with a left bevel gear, the tail end of the right side of the left screw shaft is fixedly connected with a small bevel gear, and the small bevel gear is located on the right side of the left bevel gear.

5. A refrigerator handling apparatus usable to ascend and descend stairs according to claim 1, wherein: the motor shaft is fixedly connected with a driving bevel gear which is positioned in the bevel gear cavity and is meshed with the left bevel gear, the driving bevel gear is positioned on the upper side of the small bevel gear, the motor shaft is connected with a lower sliding shaft sleeve which is positioned in the bevel gear cavity in a spline fit manner, the lower sliding shaft sleeve is positioned on the lower side of the small bevel gear, the motor shaft is fixedly connected with a lower electromagnet which is positioned in the bevel gear cavity and is positioned on the lower side of the lower sliding shaft sleeve, a lower sliding spring is fixedly connected between the lower electromagnet and the lower sliding shaft sleeve, the lower sliding shaft sleeve is fixedly connected with a lower sliding bevel gear which can be meshed with the small bevel gear, the left end of the end face gear shaft is fixedly connected with a right bevel gear which is meshed with the driving bevel gear, and the right end of the end face gear shaft is fixedly, an upper bevel gear located in the sliding bevel gear cavity is fixedly connected to the motor shaft, a belt wheel cavity is arranged on the right side of the sliding bevel gear cavity, a belt wheel shaft extending leftwards into the sliding bevel gear cavity and rightwards into the belt wheel cavity is connected to the right end wall of the sliding bevel gear cavity in a rotating fit mode, the right lead screw shaft penetrates through the belt wheel cavity to the right end face tooth cavity, and an upper sliding shaft sleeve located in the sliding bevel gear cavity is connected to the belt wheel shaft in a spline fit mode.

6. A refrigerator handling apparatus usable to ascend and descend stairs according to claim 1, wherein: the motor shaft is fixedly connected with an upper electromagnet positioned between the upper sliding shaft sleeve and the right end wall of the sliding bevel gear cavity, an upper sliding spring is fixedly connected between the upper sliding shaft sleeve and the upper electromagnet, an upper sliding bevel gear capable of being meshed with the upper bevel gear is fixedly connected onto the upper sliding shaft sleeve, the tail end of the right side of the pulley shaft is fixedly connected with a driving pulley, a driven pulley positioned in the pulley cavity is fixedly connected onto the right lead screw shaft, and a belt is connected between the driven pulley and the driving pulley in a power fit manner.