CN111498383A

CN111498383A - Serving trolley component for serving food to high place

Info

Publication number: CN111498383A
Application number: CN202010383033.4A
Authority: CN
Inventors: 林文苹
Original assignee: Jinyun Journey Machinery Technology Co ltd
Current assignee: Jinyun Journey Machinery Technology Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2020-08-07

Abstract

The invention discloses a meal delivery trolley component for delivering meal to a high place, which comprises an upright post fixed on a meal delivery trolley, wherein a meal delivery device is arranged in the upright post, the meal delivery device comprises an elevating cavity arranged in the upright post, a first rotating shaft is arranged between the front wall and the rear wall of the elevating cavity in a vertically symmetrical manner and can rotate, a rotating drum is fixedly arranged on the first rotating shaft, a conveying belt is wound between the rotating drums, a plurality of elevating plates are uniformly distributed and fixedly arranged on the conveying belt, a meal delivery device is arranged on the left side of the meal delivery device, the meal delivery device comprises a push plate cavity communicated with the lower end of the left wall of the elevating cavity, the meal delivery trolley component can stably convey meal to the high place, the meal delivery device can be automatically linked with or separated from the meal delivery device and reset when the meal delivery process is carried out, the operation is simple and convenient, the meal delivery device delivers meal accurately, the meal is stable, and the probability of soup and the like in the meal delivery process is reduced, the labor intensity and the working efficiency of the meal delivery personnel are obviously reduced.

Description

Serving trolley component for serving food to high place

Technical Field

The invention relates to the technical field of serving trolleys, in particular to a serving trolley component for serving food to a high place.

Background

Along with the development of building trade, more and more often need the workman to treat for a long time and carry out the operation at the eminence, when every time having a dinner or needing to drink water, just need make a round trip to climb and get and put to the passageway about under the general condition is less, not only the waste time, and frequent upper and lower invisibly increased the probability that the accident appears in the work progress, influence the construction progress, the mode that the special messenger sent a meal then too big to the intensity of labour of the personnel of sending a meal, the big easy condition that takes place soup and spill of the volume of sending a meal, influence dining experience. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows:

the time waste of taking and placing the food is caused by the fact that workers climb back and forth, the probability of accidents in the construction process is increased virtually from top to bottom, the labor intensity of food delivery personnel is too high in the food delivery mode of a specially-assigned person, and the situation that soup is spilled easily occurs due to the large food delivery amount.

In order to solve the problems, the present embodiment designs a meal delivery trolley component for delivering meal to a high place, the meal delivery trolley component for delivering meal to a high place of the present embodiment comprises a vertical column fixed on a meal delivery trolley, a meal delivery device is arranged in the vertical column, the meal delivery device comprises an elevating cavity arranged in the vertical column, a first rotating shaft is arranged between the front wall and the rear wall of the elevating cavity in an up-and-down symmetrical manner and can rotate, a rotating drum is fixedly arranged on the first rotating shaft, a conveying belt is wound between the rotating drums, a plurality of elevating plates are uniformly and fixedly arranged on the conveying belt, a first slide block cavity is arranged on the upper end surface of the elevating plate on the left side or the lower end surface of the elevating plate on the right side, a first limiting rod is fixedly arranged between the left wall and the right wall of the first slide block cavity, a first slide block which can slide left and right in the first slide block cavity is slidably connected to the first limiting rod, and a first spring is fixedly connected between the first slide block cavity and one side inner wall, first slider one end extends to outer and fixed first push pedal that is equipped with, meal delivery device left side is equipped with the device of having eaten, the device of having eaten is located including the intercommunication the stripper chamber of lift transport chamber left side wall lower extreme, stripper chamber upper wall intercommunication is equipped with second slider chamber, can the pivoted be equipped with first screw rod between the wall about the second slider chamber, the second slider intracavity can the horizontal slip be equipped with sliding connection in the second slider of first screw rod, second slider lower extreme extends to the push pedal intracavity and the fixed second push pedal that is equipped with, the second push pedal will push in proper order the cutlery box to the lift transport board. Preferably, the meal delivery device comprises a plurality of meal delivery channels which are uniformly distributed and communicated and are arranged on the upper side of the left wall of the lifting cavity and provided with a left opening, a slope groove with a lower wall inclined towards the left lower side is formed in the lower wall of the meal delivery channels, the front wall and the rear wall of the first rotating shaft are symmetrically arranged on the front side and the rear side of the right side of the meal delivery channels and are communicated with a rotary disc cavity, a motor cavity is formed in the front side and the rear side of the rotary disc cavity, a first motor is fixedly arranged in the motor cavity, one end, opposite to the first motor, of the rotary disc is in power connection with a rotary disc in the rotary disc cavity, a sliding rod is arranged in the front-rear penetrating mode and capable of sliding forwards and backwards in the upper end of the rotary disc, a supporting block is fixedly arranged at one end opposite to the sliding rod, a second spring is fixedly connected between.

Preferably, the last meal device is located including the intercommunication the last meal mouth of push plate chamber lower wall and opening left, it is equipped with the lift chamber to go up meal mouth lower wall intercommunication, lift chamber lower wall intercommunication is equipped with third slider chamber, can the pivoted be equipped with the second screw rod between the wall about the third slider chamber, third slider chamber left side wall internal fixation is equipped with the second motor, second screw rod left end power connect in the second motor, the third slider intracavity can the horizontal slip be equipped with threaded connection in the third slider of second screw rod.

Preferably, a lifting plate is arranged in the lifting cavity in a vertically sliding manner, a connecting groove with a downward opening is arranged on the lower end face of the lifting plate, the front wall and the rear wall of the connecting groove are communicated with a limiting groove above the third sliding block cavity, the connecting groove can slide left and right and is provided with a second limiting rod of which the front end and the rear end extend into the limiting groove, a hinge telescopic rod is arranged in the lifting cavity, the upper end and the lower end of the right side of the hinge telescopic rod are respectively connected between the connecting groove or the front wall and the rear wall of the lifting cavity in a rotating way, the upper end of the left end of the hinge telescopic rod can be rotatably connected with the second limiting rod, the lower end of the left side of the hinge telescopic rod can be rotatably connected with the upper end of the third sliding block, a dinner plate is arranged on the upper end surface of the lifting plate, when the connecting groove rises to the upper limit position, the upper end surface of the dinner plate and the lower wall of the push plate cavity are positioned in the same plane.

Preferably, be equipped with the worm wheel chamber in the second slider chamber left wall, the first screw rod left end extends to worm wheel intracavity and the fixed worm wheel that is equipped with, worm wheel left end face with fixedly connected with torsional spring between the worm wheel intracavity wall, the preceding back wall in worm wheel chamber just is located the top symmetry and the intercommunication of worm wheel are equipped with fourth slider chamber, the gliding fourth slider that is equipped with from top to bottom in fourth slider chamber, the fourth slider with fixedly connected with third spring between the fourth slider chamber lower wall, can the pivoted be equipped with the second pivot between the fourth slider, the fixed worm that is equipped with in the second pivot works as when the fourth slider glides to lower extreme position, the worm mesh in the worm wheel.

Preferably, the upper ends of the front wall and the rear wall of the upper dining opening are communicated with a supporting rod cavity, the supporting rod cavities on the front side and the rear side are symmetrically provided with supporting rods which can slide back and forth, a fourth spring with elasticity larger than that of the third spring is fixedly connected between the supporting rods and the inner wall of the supporting rod cavity, one end of each supporting rod can extend into the upper dining opening, and a pull wire is fixedly connected between the other end of each supporting rod and the upper end of the fourth slider on the same side.

Preferably, the rear side of the worm wheel cavity is located on the rear side of the lifting cavity, a belt wheel cavity is formed in the rear side of the worm wheel cavity and the rear side of the fourth slider cavity, a communication port is formed in the fourth slider cavity in a communicating mode, the rear end of the second rotating shaft penetrates through the communication port and extends into the belt wheel cavity, a first belt wheel is fixedly arranged in the belt wheel cavity, a third motor is fixedly arranged on the rear side of the first rotating shaft, the rear end of the first rotating shaft extends into the belt wheel cavity, the first rotating shaft is in power connection with the third motor, a second belt wheel is fixedly arranged in the belt wheel cavity, a flexible transmission belt is arranged between the first belt wheel and the second belt wheel, and the transmission belt is always in a tight state.

The invention has the beneficial effects that: the invention can stably convey the food to a high place, and the food loading device can automatically link with or separate from the food delivery device and reset when the food loading process is carried out, so that the operation is simple and convenient, the food delivery device can deliver the food accurately, the food delivery is stable, the probability of spilling soup and the like in the food delivery process is reduced, and the labor intensity and the working efficiency of food delivery personnel are obviously reduced.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of the overall structure of a cart for delivering food to a high place according to the present invention;

FIG. 2 is a sectional view taken in the direction "A-A" of FIG. 1;

FIG. 3 is a sectional view taken in the direction "B-B" of FIG. 1;

FIG. 4 is an enlarged schematic view of "C" of FIG. 1;

FIG. 5 is an enlarged schematic view of "D" of FIG. 1;

FIG. 6 is an enlarged schematic view of "E" of FIG. 1;

FIG. 7 is a cross-sectional view taken in the direction "F-F" of FIG. 4;

fig. 8 is a sectional view taken in the direction of "G-G" of fig. 5.

Detailed Description

The invention will now be described in detail with reference to fig. 1-8, for ease of description, the orientations described below will now be defined as follows: 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.

The invention relates to a serving trolley component for delivering food to a high place, which is mainly applied to delivering food for high-place operators, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to a meal delivery trolley component for delivering meal to a high place, which comprises an upright post 11 fixed on the meal delivery trolley, wherein a meal delivery device 101 is arranged in the upright post 11, the meal delivery device 101 comprises an elevating cavity 12 arranged in the upright post 11, a first rotating shaft 13 is arranged between the front wall and the rear wall of the elevating cavity 12 in a vertically symmetrical manner and can rotate, a rotating cylinder 14 is fixedly arranged on the first rotating shaft 13, a conveying belt 15 is wound between the rotating cylinders 14, a plurality of elevating plates 16 are uniformly distributed and fixedly arranged on the conveying belt 15, a first slide block cavity 17 is arranged on the upper end surface of the elevating plate 16 on the left side or the lower end surface of the elevating plate 16 on the right side, a first limiting rod 18 is fixedly arranged between the left wall and the right wall of the first slide block cavity 17, a first slide block 19 connected with the first limiting rod 18 in a sliding manner is arranged in the first slide block cavity 17 in a sliding manner, and a first spring 20 is fixedly connected between the first slide block 19 and the inner wall of the first slide block cavity 17 on one, 19 one end of first slider extends to outer and fixed first push pedal 21 that is equipped with, meal delivery device 101 left side is equipped with meal loading device 102, meal loading device 102 is located including the intercommunication the push pedal chamber 34 of lift transport chamber 12 left wall lower extreme, push pedal chamber 34 upper wall intercommunication is equipped with second slider chamber 35, can the pivoted be equipped with first screw rod 36 between the wall about second slider chamber 35, the gliding sliding connection that is equipped with about in second slider chamber 35 in the first screw rod 36's second slider 37, second slider 37 lower extreme extends to in the push pedal chamber 34 and the fixed second push pedal 38 that is equipped with, second push pedal 38 pushes the cutlery box in proper order to lift transport board 16.

Beneficially, as detailed description is given below for the meal delivery device 101, the meal delivery device 101 includes a plurality of meal delivery channels 22 which are uniformly distributed and communicated with the upper side of the left wall of the lifting cavity 12 and have leftward openings, the lower wall of the meal delivery channel 22 is communicated with a slope groove 23 having a lower wall inclined towards the left lower side, the front and rear walls of the first rotating shaft 13 and located at the right side of the meal delivery channel 22 are symmetrically arranged in front and rear directions and communicated with a turntable cavity 24, the inner wall of one side of the front and rear sides opposite to the turntable cavity 24 is communicated with a motor cavity 25, a first motor 26 is fixedly arranged in the motor cavity 25, one end of the first motor 26 opposite to the turntable cavity 24 is dynamically connected with a turntable 27, the upper end of the turntable 27 is provided with a sliding rod 28 which can penetrate in front and rear directions and can slide in front and rear directions, the end of the sliding rod 28 is fixedly provided with a resisting block 29, and a second spring 30, the abutting block 29 always abuts against the inner wall of the turntable cavity 24 under the action of the second spring 30.

Beneficially, as detailed in the following, the food serving device 102 includes a food serving port 39 which is communicated with and disposed on a lower wall of the push plate cavity 34 and has a leftward opening, a lifting cavity 40 is communicated with a lower wall of the food serving port 39, a third slider cavity 41 is communicated with a lower wall of the lifting cavity 40, a second screw 42 is rotatably disposed between a left wall and a right wall of the third slider cavity 41, a second motor 43 is fixedly disposed in a left wall of the third slider cavity 41, a left end of the second screw 42 is dynamically connected to the second motor 43, and a third slider 44 which is connected to the second screw 42 in a threaded manner is disposed in the third slider cavity 41 and can slide left and right.

Beneficially, the lifting plate 45 is arranged in the lifting cavity 40 and can slide up and down, a connecting groove 46 with a downward opening is arranged on the lower end face of the lifting plate 45, a limiting groove 47 is arranged on the front wall and the rear wall of the connecting groove 46 and is located above the third sliding block cavity 41 in a communicated manner, a second limiting rod 48 is arranged in the limiting groove 47 and can slide left and right in the connecting groove 46 and extends to the front end and the rear end of the connecting groove 47, a hinge telescopic rod 49 is arranged in the lifting cavity 40, the upper end and the lower end of the right side of the hinge telescopic rod 49 are respectively connected between the connecting groove 46 and the front wall and the rear wall of the lifting cavity 40 in a rotatable manner, the upper end of the left end of the hinge telescopic rod 49 is connected to the second limiting rod 48 in a rotatable manner, the lower end of the left side of the hinge telescopic rod 49 is connected to the upper end of, the upper end of the dish 50 is in the same plane as the lower wall of the pusher chamber 34.

Beneficially, a worm wheel cavity 51 is arranged in the left wall of the second slider cavity 35, the left end of the first screw rod 36 extends into the worm wheel cavity 51 and is fixedly provided with a worm wheel 52, a torsion spring 53 is fixedly connected between the left end surface of the worm wheel 52 and the inner wall of the worm wheel cavity 51, fourth slider cavities 54 are symmetrically and communicatively arranged on the front and rear walls of the worm wheel cavity 51 and above the worm wheel 52, a fourth slider 55 is arranged in the fourth slider cavity 54 and can slide up and down, a third spring 68 is fixedly connected between the fourth slider 55 and the lower wall of the fourth slider cavity 54, a second rotating shaft 56 is arranged between the fourth sliders 55 and can rotate, a worm 57 is fixedly arranged on the second rotating shaft 56, and when the fourth slider 55 slides down to a lower limit position, the worm 57 is engaged with the worm wheel 52.

Beneficially, the upper end of the front wall and the upper end of the rear wall of the upper meal port 39 are communicated with a rod abutting cavity 58, rod abutting cavities 59 are symmetrically arranged in the rod abutting cavities 58 on the front side and the rear side and can slide back and forth, fourth springs 60 with elasticity larger than that of the third springs 68 are fixedly connected between the rod abutting cavities 59 and the inner walls of the rod abutting cavities 58, one end of each rod abutting cavity 59 can extend into the upper meal port 39, and pull wires 61 are fixedly connected between the other end of each rod abutting cavity 59 and the upper end of the fourth slider 55 on the same side.

Beneficially, a pulley cavity 62 is provided at the rear side of the worm wheel cavity 51 and at the rear side of the lifting cavity 12, a communication port 63 is provided between the pulley cavity 62 and the fourth slider cavity 54 at the rear side, the rear end of the second rotating shaft 56 passes through the communication port 63 and extends into the pulley cavity 62 and is fixedly provided with a first pulley 64, a third motor 65 is fixedly provided at the rear side of the first rotating shaft 13 at the lower side in the rear wall of the pulley cavity 62, the rear end of the first rotating shaft 13 at the lower side extends into the pulley cavity 62 and is in power connection with the third motor 65, a second pulley 66 is fixedly provided in the pulley cavity 62 of the first rotating shaft 13 at the lower side, an elastic transmission belt 67 is wound between the first pulley 64 and the second pulley 66, and the transmission belt 67 is always in a tightened state.

The steps of using a cart member for delivering food to an elevated location are described in detail below with reference to fig. 1-8:

initially, the first slider 19 and the first push plate 21 are in the extreme position near the side of the conveyor belt 15, the slide bar 28 is in the rear extreme position, the second slider 37 and the second push plate 38 are in the left extreme position, the lifting plate 45 is in the lower extreme position, the fourth slider 55 is in the upper extreme position, and the third spring 68 is in the stretched state.

In preparation for work, a dinner plate 50 with a lunch box placed thereon is placed on the lifting plate 45, the second motor 43 is started to drive the second screw 42 to rotate, the third slide block 44 is driven to slide rightwards through threaded connection, the hinge telescopic rod 49 is further extended to push the lifting plate 45 to ascend to a limit position, at the moment, the upper end surface of the dinner plate 50 and the lower wall of the push plate cavity 34 are positioned in the same plane, the dinner plate 50 pushes the supporting rod 59 back to the supporting rod cavity 58 in the process of sliding up to the limit position along with the lifting plate 45, the fourth spring 60 is further compressed, the pull wire 61 is loosened, the fourth slide block 55 slides downwards to the limit position under the action of the third spring 68, the worm 57 is meshed with the worm wheel 52, then the third motor 65 is started to drive the first rotating shaft 13 on the lower side to rotate, then the rotating drum 14 and the second belt pulley 66 rotate along with the rotating drum 14 on the lower side, the conveying belt 15 is driven to rotate by the second, and then the worm gear drives the first screw rod 36 to rotate, then the first screw rod 36 drives the second slide block 37 and the second push plate 38 to slide right through threaded connection when rotating, and then the second push plate 38 pushes the lunch boxes to each lifting plate 16 in turn when sliding right.

When the lunch box reaches the height position needing to be served, the first motor 26 at the height is started to drive the rotary disc 27 to rotate clockwise, when the rotary disc 27 rotates, the slide rods 28 are pushed by the inner wall of the rotary disc cavity 24 to slide in opposite directions, when the rotary disc 27 rotates, the opposite ends of the slide rods 28 extend into the lifting cavity 12 and abut against the end face of one side, close to the conveying belt 15, of the first push plate 21, then the first push plate 21 is pushed to slide rightwards, the first push plate 21 pushes the lunch box into the meal outlet channel 22 at the left side, the lunch box slides leftwards along the lower wall of the slope groove 23, and after the rotary disc 27 rotates and resets, the slide rods 28 retract to the initial position, so that the ascending of.

After the meal on the dinner plate 50 is conveyed, the second motor 43 drives the third sliding block 44 to rotate reversely, the lifting plate 45 descends, the abutting rods 59 on the front side and the rear side slide oppositely under the action of the fourth spring 60 to reset and pull up the fourth sliding block 55 through the pull wire 61, then the worm 57 is disengaged from the worm wheel 52, the worm wheel 52 and the first screw rod 36 rotate reversely under the action of the twisted torsion spring 53, and the second sliding block 37 and the second pushing plate 38 are driven to slide leftwards to reset through threaded connection when the first screw rod 36 rotates reversely

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a to serving trolley component of eminence food delivery, is including being fixed in the stand on the serving trolley, be equipped with meal delivery device in the stand, its characterized in that: the meal delivery device comprises an elevating cavity arranged in the upright post, a first rotating shaft is arranged between the front wall and the rear wall of the elevating cavity in a vertically symmetrical manner and can rotate, a rotating drum is fixedly arranged on the first rotating shaft, a conveying belt is wound between the rotating drums, a plurality of elevating plates are uniformly distributed and fixedly arranged on the conveying belt, a first slider cavity is arranged on the upper end surface of the elevating plate on the left side or on the lower end surface of the elevating plate on the right side, a first limiting rod is fixedly arranged between the left wall and the right wall of the first slider cavity, a first slider connected with the first limiting rod in a sliding manner is arranged in the first slider cavity in a left-right sliding manner, a first spring is fixedly connected between the first slider and the inner wall of the first slider cavity on one side far away from the conveying belt, one end of the first slider extends to the outside and is fixedly provided with a first push plate, a meal delivery device is arranged on the left side of the meal delivery device, and comprises a push plate cavity communicated with the lower, the push pedal chamber upper wall intercommunication is equipped with second slider chamber, can the pivoted be equipped with first screw rod about the second slider chamber between the wall, the second slider intracavity can the horizontal slip be equipped with sliding connection in the second slider of first screw rod, second slider lower extreme extends to push pedal intracavity and fixed second push pedal that is equipped with, the second push pedal is pushed the cutlery box in proper order to the lift board.

2. A cart assembly for delivering meals aloft according to claim 1, wherein: meal delivery device includes that equipartition and intercommunication are located a plurality of meal delivery passageways left of elevating conveyor chamber left side wall upside and opening, meal delivery passageway lower wall intercommunication is equipped with the slope groove of lower wall below left side slope, the wall just is located around the first pivot the symmetry just intercommunication is equipped with the carousel chamber around meal delivery passageway's the right side, both sides around the intercommunication one side inner wall that the carousel chamber is relative is equipped with the motor chamber, the fixed first motor that is equipped with of motor intracavity, the relative one end of first motor in carousel intracavity power is connected with the carousel, it is equipped with the slide bar to run through around the carousel upper end and can be gliding around, the fixed piece that supports that is equipped with of the opposite one end of slide bar, support the piece with fixedly connected with second spring between the carousel support the piece all the time with carousel intracavity wall offsets under the effect of second spring.

3. A cart assembly for delivering meals aloft according to claim 1, wherein: go up meal device and locate including the intercommunication push plate chamber lower wall and opening meal mouth of going up to the left, meal mouth lower wall intercommunication of going up is equipped with the lift chamber, lift chamber lower wall intercommunication is equipped with the third slider chamber, can the pivoted be equipped with the second screw rod between the wall about the third slider chamber, the left wall internal fixation of third slider chamber is equipped with the second motor, second screw rod left end power connect in the second motor, the third slider chamber can the horizontal slip be equipped with threaded connection in the third slider of second screw rod.

4. A cart assembly for delivering meals aloft according to claim 3 and further comprising: a lifting plate is arranged in the lifting cavity in a manner of sliding up and down, a connecting groove with a downward opening is arranged on the lower end surface of the lifting plate, the front wall and the rear wall of the connecting groove are communicated with a limiting groove above the third sliding block cavity, the connecting groove can slide left and right and is provided with a second limiting rod of which the front end and the rear end extend into the limiting groove, a hinge telescopic rod is arranged in the lifting cavity, the upper end and the lower end of the right side of the hinge telescopic rod are respectively connected between the connecting groove or the front wall and the rear wall of the lifting cavity in a rotating way, the upper end of the left end of the hinge telescopic rod can be rotatably connected with the second limiting rod, the lower end of the left side of the hinge telescopic rod can be rotatably connected with the upper end of the third sliding block, a dinner plate is arranged on the upper end surface of the lifting plate, when the connecting groove rises to the upper limit position, the upper end surface of the dinner plate and the lower wall of the push plate cavity are positioned in the same plane.

5. A cart assembly for delivering meals aloft according to claim 1, wherein: be equipped with the worm wheel chamber in the second slider chamber left wall, first screw rod left end extends to worm wheel intracavity and fixed worm wheel that is equipped with, worm wheel left end face with fixedly connected with torsional spring between the worm wheel intracavity wall, the preceding back wall in worm wheel chamber just is located the top symmetry and the intercommunication of worm wheel are equipped with fourth slider chamber, gliding fourth slider chamber is equipped with the fourth slider from top to bottom in the internal energy, the fourth slider with fixedly connected with third spring between the fourth slider chamber lower wall, can the pivoted be equipped with the second pivot between the fourth slider, the fixed worm that is equipped with in the second pivot works as when fourth slider gliding to the lower extreme position, the worm mesh in the worm wheel.

6. A cart assembly for delivering meals aloft according to claim 5 and further comprising: the food opening is characterized in that the upper ends of the front wall and the rear wall of the food opening are symmetrically provided with supporting rod cavities in a communicated mode, the supporting rod cavities on the front side and the rear side are symmetrically provided with supporting rods capable of sliding back and forth, elastic force of a fourth spring larger than that of the third spring is fixedly connected between the supporting rods and the inner wall of the supporting rod cavity, one end of each supporting rod can extend into the food opening, and a pull wire is fixedly connected between the other end of each supporting rod and the upper end of the fourth sliding block on the same side.

7. A cart assembly for delivering meals aloft according to claim 5 and further comprising: worm-gear chamber rear side just is located the rear side in lift chamber is equipped with the belt pulley chamber, belt pulley chamber and rear side the intercommunication is equipped with the intercommunication mouth between the fourth slider chamber, the second pivot rear end is passed the intercommunication mouth extends to the belt pulley intracavity and the fixed first band pulley that is equipped with, just be located the downside in the belt pulley chamber back wall the fixed third motor that is equipped with in first pivot rear side, the downside the first pivot rear end extends to belt pulley intracavity and power connect in the third motor, the downside the first pivot in the belt pulley intracavity is fixed and is equipped with the second band pulley, first band pulley with around being equipped with elastic drive belt between the second band pulley, the drive belt is in the state of tightening all the time.