An automatic food delivery robot

Abstract

The present invention discloses an automatic food delivery robot, comprising a machine body, a box body and a guide rail, wherein the machine body is provided with a first driving module for driving the machine body to slide on the guide rail, the machine body is provided with an adjustment module and two lifting devices, the two lifting devices are symmetrically arranged on the left and right ends of the machine body, the lifting devices include a roller and a plurality of pull ropes, the two rollers realize synchronous vertical lifting of the two ends of the box body by synchronously rotating and winding the pull ropes, when the machine body moves to the inclined section of the guide rail, the adjustment module controls the pull ropes in the two lifting devices to synchronously retract and release the same length respectively, so that the box body is in a horizontal balance state. The present invention has a compact structure, which is conducive to preventing dishes from spilling or falling during the moving of the equipment for food delivery.

Description

Technical Field

[0001] The present invention relates to the field of food delivery equipment, and in particular to an automatic food delivery robot. Background Art

[0002] The main purpose of the food delivery robot is to reduce the workload of restaurant waiters and improve the work efficiency and profitability of the restaurant. The food delivery robot can follow a pre-set route, using a track or trackless form, and deliver the food to the designated table according to instructions. After a voice prompt, the customer or waiter will transfer the food tray to the table.

[0003] However, when the food delivery robot moves vertically or diagonally during movement, the food plates are easily transported at an angle, causing the dishes on the food plates to spill or fall off. Summary of the invention

[0004] The object of the present invention is to provide an automatic food delivery robot capable of stably delivering dishes.

[0005] The technical solution adopted by the present invention to solve the above problems is:

[0006] An automatic food delivery robot comprises a body, a box body and a guide rail, wherein the body is provided with a first driving module for driving the body to slide on the guide rail, the body is provided with an adjustment module and two lifting devices, the two lifting devices are symmetrically arranged on the left and right ends of the body, the lifting devices comprise a roller and a plurality of pull ropes, the two rollers realize synchronous vertical lifting of the two ends of the box body by synchronously rotating and winding the pull ropes, when the body moves to the inclined section of the guide rail, the adjustment module controls the pull ropes in the two lifting devices to synchronously retract and release the same length respectively, so that the box body is in a horizontally balanced state.

[0007] The adjusting module comprises two adjusting units, which are symmetrically arranged on the machine body. The adjusting unit comprises a first threaded rod, a sliding seat, a plurality of first adjusting members and a plurality of second adjusting members. The first threaded rod is rotatably arranged on the machine body, and the sliding seat is slidably arranged on the machine body. The first adjusting member is sleeved on the first threaded rod in a threaded matching manner, and the second adjusting member is sleeved on the sliding seat. The adjusting unit and the pull rope at the same end of the machine body are wound around the corresponding first adjusting member and the second adjusting member. There are at least two first adjusting members and the second adjusting members in the adjusting unit. The first threaded rod and the drum at the same end of the machine body are connected by a synchronous belt transmission mechanism. When the drum rotates, the drum drives the first adjusting member on the first threaded rod to move synchronously horizontally and longitudinally through the first threaded rod, so that the pull rope is wound around the drum circle by circle. A connecting rod is connected between the two first adjusting members symmetrically arranged in the two adjusting units, and the connecting rod is penetrated on the second adjusting member corresponding to the first adjusting member thereon. A second driving module for driving the two sliding seats to move synchronously and horizontally in the same direction and reset is provided on the machine body. The corresponding first and second adjusting members in the adjusting unit move synchronously, so that the pull rope is wound around the drum in circles, avoiding the unstable lifting and lowering of the box body caused by inconsistent length changes between the pull ropes due to the pull ropes being stacked and wound on the drum.

[0008] As a further improvement of the above technical solution, the second driving module includes a second threaded rod, two rotating shafts and two driving gears. The two rotating shafts are rotatably arranged on the left and right ends of the body in a left-right symmetrical manner. The second threaded rod is located between the two rotating shafts. The second threaded rod is rotatably connected to the body and both ends of the second threaded rod are respectively connected to the two rotating shafts through a bevel gear transmission mechanism. The two driving gears are respectively fixedly connected to the two rotating shafts. The two sliding seats are both sleeved on the second threaded rod in a threaded matching manner. Since the threaded driving structure has a self-locking function, the sliding seat is prevented from shifting under the action of the pull rope, which is beneficial to ensuring the use effect of the equipment. The inclined section of the guide rail is provided with a first rack and a second rack. Along the moving direction of the body, the second rack is located in front of the first rack. The first rack is meshed with the driving gear located in the front of the two driving gears, so that the first rack drives the two sliding seats to move horizontally in the same direction synchronously through the driving gear, and the second rack is meshed with the driving gear located in the rear of the two driving gears, so that the second rack drives the two sliding seats to reset through the driving gear. When the machine body enters the inclined section of the guide rail, the front driving gear of the two driving gears contacts the first rack and drives the two sliding seats to move horizontally in the same direction synchronously during the contact process, and when the machine body leaves the inclined section of the guide rail, the rear driving gear of the two driving gears contacts the second rack and drives the two sliding seats to reset during the contact process, so that the same length is synchronously retracted and released by the pull ropes at both ends of the machine body, so as to achieve the purpose of the box body always being in a horizontal balance state during the movement of the guide rail.

[0009] As a further improvement of the above technical solution, the machine body is equipped with an infrared transmitter for emitting infrared rays to the desktop and an infrared receiver for receiving infrared rays reflected by the desktop, and a reflector group is installed on the desktop, the reflector group includes a first reflector for changing the irradiation direction of the infrared rays from the vertical direction to the horizontal direction, two second reflectors arranged in parallel, and a third reflector for changing the irradiation direction of the infrared rays from the horizontal direction to the vertical direction, and the infrared rays reflected by the first reflector are reflected back and forth between the two second reflectors for many times to form an infrared reflection area and then emitted to the third reflector. The infrared reflection area is conducive to ensuring that there are no other sundries in the area where the box body is placed on the desktop, so that the box body can be placed stably on the desktop.

[0010] As a further improvement of the above technical solution, the first adjusting member is rotatably connected to a first pulley and a second pulley which are symmetrically arranged in an upper and lower direction, and the second adjusting member is rotatably connected to a third pulley. The pull rope is sequentially wound around the first pulley, the third pulley and the second pulley, which improves the smoothness of the pull rope sliding and is beneficial to ensuring the normal lifting and lowering of the box body.

[0011] As a further improvement of the above technical solution, the first driving module includes a first motor, a lower roller and two upper rollers, the guide rail is clamped between the upper roller and the lower roller, the upper roller is rotatably connected to the machine body, the first motor drives the lower roller to rotate through a synchronous belt transmission mechanism, the lower roller is slidably connected to the machine body, a telescopic rod is connected between the lower roller and the machine body, the telescopic rod is provided with a spring for extending the telescopic rod outward, so that the lower roller has room for movement, and the use of the two upper rollers is conducive to ensuring the smoothness of the switching between horizontal linear movement and oblique linear movement of the food delivery equipment.

[0012] As a further improvement of the above technical solution, a second motor is installed on the machine body, and the second motor is connected to the rollers in the two lifting devices through a gear transmission mechanism. The two rollers are respectively meshed with two gears in opposite rotation directions in the gear transmission mechanism, so that the second motor can drive the two rollers to rotate synchronously in opposite directions. During the synchronous rotation of the two rollers, the pull ropes fixed on the two ends of the box body are synchronously wound up or released by the two rollers to the same length, so that the two ends of the box body are synchronously lifted to the same height. The second motor drives the two rollers to rotate at the same time, which improves the accuracy of the length of the pull rope wound up or released by the two rollers, which is conducive to ensuring the smooth lifting and lowering of the box body.

[0013] As a further improvement of the above technical solution, a sealing cover is provided on the top of the box body, which is beneficial to reduce the heat loss of the dishes during transportation and prevent the dishes from getting cold and affecting the dining experience.

[0014] Compared with the prior art, the present invention has the following advantages and effects:

[0015] The present invention uses two lifting devices to synchronously control the synchronous vertical lifting of the two ends of the box body, which is beneficial to improving the stability of the box body lifting. At the same time, the adjustment module is used to control the pull ropes of the two lifting devices to synchronously retract and release the same length. The structure is compact, which is beneficial to controlling the volume of the equipment, and ensures that the box body always maintains a horizontal balance state during the horizontal and oblique linear movement of the body on the guide rail, thereby avoiding the overflow or fall of dishes on the plate due to the tilt of the box body during the movement of the equipment to deliver meals. Furthermore, the box body is lifted by the roller in the lifting device in conjunction with the pull rope, so that the effect of the equipment delivering meals in a suspended manner is achieved, avoiding the situation where the equipment encounters obstacles during the movement of the equipment to deliver meals, which is beneficial to improving the delivery efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an automatic food delivery robot of the present invention.

[0017] Figure 2 yes Figure 1 Schematic diagram of the structure of the body shown in.

[0018] Figure 3 yes Figure 2 Schematic diagram of the internal structure of the body shown in.

[0019] Figure 4 yes Figure 3 The structural schematic diagram of the lifting device is shown in .

[0020] Figure 5 yes Figure 1 Schematic diagram of the structure inside the guide rail shown in.

[0021] Figure 6 yes Figure 3 The structural schematic diagram of the regulation module is shown in .

[0022] Figure 7 yes Figure 6 Schematic diagram of the reflection path of infrared light emitted by the infrared transmitter on the desktop.

[0023] Figure 8 yes Figure 6 A schematic structural diagram of the first adjusting member and the second adjusting member is shown in FIG.

[0024] Among them, the body 1, the second motor 11, the infrared transmitter 12, the infrared receiver 13, the box body 2, the sealing cover 21, the guide rail 3, the inclined section 31, the first rack 32, the second rack 33, the first drive module 4, the first motor 41, the lower roller 42, the upper roller 43, the telescopic rod 44, the spring 45, the adjustment module 5, the adjustment unit 51, the first threaded rod 52, the sliding seat 53, the first adjustment member 54, the second adjustment member 55, the connecting rod 56, the first pulley 57, the second pulley 58, the third pulley 59, the lifting device 6, the roller 61, the pull rope 62, the second drive module 7, the second threaded rod 71, the rotating shaft 72, the driving gear 73, the gear transmission mechanism 81, the bevel gear transmission mechanism 82, the synchronous belt transmission mechanism 83, the desktop 9, the reflector group 91, the first reflector 92, the second reflector 93, the third reflector 94. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0026] See also Figure 1-Figure 4The present embodiment is an automatic food delivery robot, comprising a body 1, a box body 2 and a guide rail 3. The body 1 is provided with a first driving module 4 for driving the body 1 to slide on the guide rail 3. The body 1 is provided with an adjustment module 5 and two lifting devices 6. The two lifting devices 6 are symmetrically arranged on the left and right ends of the body 1. The lifting devices 6 include a roller 61 and two pull ropes 62. The two rollers 61 realize synchronous vertical lifting of the two ends of the box body 2 by synchronously rotating and winding the pull ropes 62. When the body 1 moves to the inclined section 31 of the guide rail 3, the adjustment module 5 controls the pull ropes 62 in the two lifting devices 6 to synchronously retract and release the same length, so that the box body 2 is in a horizontal balance state.

[0027] See also Figure 2 , Figure 3 The first driving module 4 includes a first motor 41, a lower roller 42 and two upper rollers 43. The guide rail 3 is clamped between the upper roller 43 and the lower roller 42. The upper roller 43 is rotatably connected to the body 1. The first motor 41 drives the lower roller 42 to rotate through a synchronous belt transmission mechanism. The lower roller 42 is slidably connected to the body 1. A telescopic rod 44 is connected between the lower roller 42 and the body 1, and a spring 45 is provided on the telescopic rod 44 for extending the telescopic rod 44 outward.

[0028] See also Figure 3 A sealing cover 21 is provided at the top of the box body 2.

[0029] See also Figure 3 , Figure 4 A second motor 11 is installed on the machine body 1, and the second motor 11 is connected to the rollers 61 in the two lifting devices 6 through a gear transmission mechanism. The two rollers 61 are respectively engaged with two gears with opposite rotation directions in the gear transmission mechanism, so that the second motor 11 can drive the two rollers 61 to rotate synchronously in opposite directions. During the synchronous rotation of the two rollers 61, the pull ropes 62 fixed on the two ends of the box body 2 are synchronously wound up or released by the two rollers 61 to the same length, so that the two ends of the box body 2 are synchronously lifted and lowered to the same height.

[0030] See also Figure 3 , Figure 4 as well as Figure 6The adjustment module 5 includes two adjustment units 51, which are symmetrically arranged on the body 1. The adjustment unit 51 includes a first threaded rod 52, a sliding seat 53, two first adjustment members 54 and two second adjustment members 55. The first threaded rod 52 is rotatably arranged on the body 1, and the sliding seat 53 is slidably arranged on the body 1. The two ends of the first threaded rod 52 are respectively provided with threads with opposite rotation directions. The two first adjustment members 54 are respectively sleeved on the two ends of the first threaded rod 52 in a threaded matching manner. The two second adjustment members 55 are sleeved on the sliding seat 53. The adjustment unit 51 and the pull rope 62 at the same end of the body 1 are wound around the corresponding first adjustment member. On the joint member 54 and the second adjusting member 55, the first threaded rod 52 and the drum 61 at the same end on the body 1 are connected by a synchronous belt transmission mechanism. When the drum 61 rotates, the drum 61 drives the first adjusting member 54 on the first threaded rod 52 to move horizontally and longitudinally synchronously through the first threaded rod 52, so that the pull rope 62 is wound around the drum 61 circle by circle. A connecting rod 56 is connected between the two first adjusting members 54 symmetrically arranged in the two adjusting units 51. The connecting rod 56 is passed through the second adjusting member 55 corresponding to the first adjusting member 54 thereon. The body 1 is provided with a second driving module 7 for driving the two sliding seats 53 to move horizontally and horizontally in the same direction synchronously and reset.

[0031] See also Figure 3-Figure 6 The second driving module 7 includes a second threaded rod 71, two rotating shafts 72 and two driving gears 73. The two rotating shafts 72 are respectively rotatably arranged on the left and right ends of the body 1 in a left-right symmetrical manner. The second threaded rod 71 is located between the two rotating shafts 72. The second threaded rod 71 is rotatably connected to the body 1 and both ends of the second threaded rod 71 are respectively connected to the two rotating shafts 72 through a bevel gear transmission mechanism. The two driving gears 73 are respectively fixedly connected to the two rotating shafts 72. The two sliding seats 53 are both sleeved on the second threaded rod 71 in a threaded matching manner. On the threaded rod 71, a first rack 32 and a second rack 33 are provided on the inclined section 31 of the guide rail 3. Along the moving direction of the body 1, the second rack 33 is located in front of the first rack 32. The first rack 32 is meshed with the driving gear 73 located in the front of the two driving gears 73, so that the first rack 32 drives the two sliding seats 53 to move horizontally in the same direction synchronously through the driving gear 73. The second rack 33 is meshed with the driving gear 73 located at the rear of the two driving gears 73, so that the second rack 33 drives the two sliding seats 53 to reset through the driving gear 73.

[0032] See also Figure 6 , Figure 7The body 1 is equipped with an infrared transmitter 12 for emitting infrared rays to the desktop and an infrared receiver 13 for receiving infrared rays reflected by the desktop. A reflector group 91 is installed on the desktop. The reflector group 91 includes a first reflector 92 for changing the irradiation direction of the infrared rays from a vertical direction to a horizontal direction, two second reflectors 93 arranged in parallel, and a third reflector 94 for changing the irradiation direction of the infrared rays from a horizontal direction to a vertical direction. The infrared rays reflected by the first reflector 92 are reflected back and forth multiple times between the two second reflectors 93 to form an infrared reflection area and then emitted to the third reflector 94.

[0033] See also Figure 8 The first adjusting member 54 is rotatably connected to a first pulley 57 and a second pulley 58 which are symmetrically arranged in an upper and lower manner, and the second adjusting member 55 is rotatably connected to a third pulley 59. The pull rope 62 is sequentially wound around the first pulley 57, the third pulley 59 and the second pulley 58.

[0034] In summary, the method of using the present invention is as follows:

[0035] Step 1: Put the dishes to be transported into the box, and drive the two rollers to rotate synchronously in opposite directions through the second motor, so that the rollers wind up the pull rope, and the box rises upward. At this time, the roller drives the first threaded rod to rotate, so that the two first adjustment members on the first threaded rod move synchronously close to each other, and the pull rope is wound around the roller one circle at a time;

[0036] Step 2: The first driving module drives the machine body to move along the guide rail until the machine body moves to the position directly above the dining table where the dish needs to be delivered;

[0037] When the inclined section of the guide rail is obliquely upward, during the process of the machine body entering the inclined section, the first rack drives the front driving gear of the two driving gears to rotate, so that the second threaded rod drives the second adjusting member to slide along the moving direction of the machine body, and the length of the pull rope exposed to the machine body at the front end in the moving direction of the machine body gradually increases relative to the length of the pull rope exposed to the machine body at the rear end of the machine body, until the machine body completely enters the inclined section, so that the box body always maintains a horizontal balance state during the oblique upward movement of the machine body; during the process of the machine body leaving the inclined section, the second rack drives the rear driving gear of the two driving gears to rotate, so that the second threaded rod drives the second adjusting member to gradually reset, and the length difference between the pull ropes exposed to the machine body at the front and rear ends of the machine body gradually decreases until the machine body completely leaves the inclined section, at which time the lengths of the pull ropes exposed to the machine body at the front and rear ends of the machine body are the same.

[0038] When the inclined section of the guide rail is obliquely downward, during the process of the machine body entering the inclined section, the first rack drives the front driving gear of the two driving gears to rotate, so that the second threaded rod drives the second adjusting member to slide in the opposite direction of the movement direction of the machine body, and the length of the pull rope exposed to the machine body at the front end of the movement direction of the machine body gradually decreases relative to the length of the pull rope exposed to the machine body at the rear end of the machine body, until the machine body completely enters the inclined section, so that the box body always maintains a horizontal balance state during the process of the machine body moving obliquely downward; during the process of the machine body leaving the inclined section, the second rack drives the rear driving gear of the two driving gears to rotate, so that the second threaded rod drives the second adjusting member to gradually reset, and the length difference between the pull ropes exposed to the machine body at the front and rear ends of the machine body gradually decreases until the machine body completely leaves the inclined section, at which time the lengths of the pull ropes exposed to the machine body at the front and rear ends of the machine body are the same.

[0039] Step 3: The infrared ray is emitted to the tabletop through the infrared transmitter. When the infrared ray is reflected by the reflector group on the tabletop and received by the infrared receiver, the second motor drives the two rollers to rotate synchronously in opposite directions, so that the pull rope on the roller is released and the box body falls downward until the box body falls on the tabletop;

[0040] Step 4: Open the box body, take out the dishes in the box body, and then use the second motor to drive the roller to roll up the pull rope to retract the box body, and then use the first drive module to drive the device to return to the loading position along the guide rail.

[0041] The above contents described in this specification are merely examples of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, as long as they do not deviate from the contents of the present specification or exceed the scope defined by the claims, they shall all fall within the protection scope of the present invention.

Claims

1. An automatic food delivery robot, comprising a body (1), a box body (2) and a guide rail (3), characterized in that: The machine body (1) is provided with a first driving module (4) for driving the machine body (1) to slide on the guide rail (3). The machine body (1) is provided with an adjusting module (5) and two lifting devices (6). The two lifting devices (6) are symmetrically arranged on the left and right ends of the machine body (1). The lifting devices (6) include a roller (61) and a plurality of pull ropes (62). The two rollers (61) realize synchronous vertical lifting of the two ends of the box body (2) by synchronously rotating and winding the pull ropes (62). When the machine body (1) moves to the inclined section (31) of the guide rail (3), the adjusting module (5) controls the pull ropes (62) in the two lifting devices (6) to synchronously retract and release the same length respectively, so that the box body (2) is in a horizontally balanced state. The adjusting module (5) comprises two adjusting units (51), the two adjusting units (51) are symmetrically arranged on the machine body (1), the adjusting unit (51) comprises a first threaded rod (52), a sliding seat (53), a plurality of first adjusting members (54) and a plurality of second adjusting members (55), the first threaded rod (52) is rotatably arranged on the machine body (1), the sliding seat (53) is slidably arranged on the machine body (1), the first adjusting member (54) is sleeved on the first threaded rod (52) in a threaded matching manner, the second adjusting member (55) is sleeved on the sliding seat (53), the adjusting unit (51) and the pull rope (62) at the same end of the machine body (1) are wound around the corresponding first adjusting member (54) and the second adjusting member (55), the first adjusting member (54) in the adjusting unit (51) The first adjusting member (54) and the second adjusting member (55) are at least two each. The first threaded rod (52) and the roller (61) at the same end of the machine body (1) are connected to each other through a synchronous belt transmission mechanism. When the roller (61) rotates, the roller (61) drives the first adjusting member (54) on the first threaded rod (52) to move horizontally and longitudinally synchronously through the first threaded rod (52), so that the pull rope (62) is wound around the roller (61) in circles. A connecting rod (56) is connected between the two first adjusting members (54) symmetrically arranged in the two adjusting units (51). The connecting rod (56) is passed through the second adjusting member (55) corresponding to the first adjusting member (54) thereon. The machine body (1) is provided with a second driving module (7) for driving the two sliding seats (53) to move horizontally and horizontally synchronously in the same direction and reset.

2. The automatic food delivery robot according to claim 1, characterized in that: The second driving module (7) comprises a second threaded rod (71), two rotating shafts (72) and two driving gears (73); the two rotating shafts (72) are rotatably arranged on the left and right ends of the machine body (1) in a left-right symmetrical manner; the second threaded rod (71) is located between the two rotating shafts (72); the second threaded rod (71) is rotatably connected to the machine body (1) and both ends of the second threaded rod (71) are respectively connected to the two rotating shafts (72) through a bevel gear transmission mechanism; the two driving gears (73) are respectively fixedly connected to the two rotating shafts (72); the two sliding seats (53) are sleeved on the second threaded rod (71) in a threaded matching manner; ), a first rack (32) and a second rack (33) are provided on the inclined section (31) of the guide rail (3), and along the moving direction of the machine body (1), the second rack (33) is located in front of the first rack (32), and the first rack (32) is meshed with the driving gear (73) located in the front of the two driving gears (73), so that the first rack (32) drives the two sliding seats (53) to move horizontally in the same direction synchronously through the driving gear (73), and the second rack (33) is meshed with the driving gear (73) located in the rear of the two driving gears (73), so that the second rack (33) drives the two sliding seats (53) to reset through the driving gear (73).

3. The automatic food delivery robot according to claim 1, characterized in that: The machine body (1) is provided with an infrared transmitter (12) for transmitting infrared rays to a desktop and an infrared receiver (13) for receiving infrared rays reflected by the desktop. A reflector group (91) is provided on the desktop. The reflector group (91) comprises a first reflector (92) for changing the irradiation direction of the infrared rays from a vertical direction to a horizontal direction, two second reflectors (93) arranged in parallel, and a third reflector (94) for changing the irradiation direction of the infrared rays from a horizontal direction to a vertical direction. The infrared rays reflected by the first reflector (92) are reflected back and forth multiple times between the two second reflectors (93) to form an infrared ray reflection area and then irradiated to the third reflector (94).

4. The automatic food delivery robot according to claim 1, characterized in that: The first adjusting member (54) is rotatably connected to a first pulley (57) and a second pulley (58) which are symmetrically arranged in an upper and lower direction, the second adjusting member (55) is rotatably connected to a third pulley (59), and the pull rope (62) is sequentially wound around the first pulley (57), the third pulley (59) and the second pulley (58).

5. The automatic food delivery robot according to claim 1, characterized in that: The first driving module (4) comprises a first motor (41), a lower roller (42) and two upper rollers (43); the guide rail (3) is clamped between the upper roller (43) and the lower roller (42); the upper roller (43) is rotatably connected to the machine body (1); the first motor (41) drives the lower roller (42) to rotate through a synchronous belt transmission mechanism; the lower roller (42) is slidably connected to the machine body (1); a telescopic rod (44) is connected between the lower roller (42) and the machine body (1); and a spring (45) is provided on the telescopic rod (44) for causing the telescopic rod (44) to extend outward.

6. The automatic food delivery robot according to claim 1, characterized in that: A second motor (11) is mounted on the machine body (1). The second motor (11) is connected to the rollers (61) in the two lifting devices (6) through a gear transmission mechanism. The two rollers (61) are respectively meshed with two gears in the gear transmission mechanism with opposite rotation directions, so that the second motor (11) can drive the two rollers (61) to rotate synchronously in opposite directions. During the synchronous rotation of the two rollers (61), the pull ropes (62) fixed on the two ends of the box body (2) are synchronously wound up or released by the two rollers (61) to the same length, so that the two ends of the box body (2) are synchronously lifted and lowered to the same height.

7. The automatic food delivery robot according to claim 1, characterized in that: A sealing cover (21) is provided at the top end of the box body (2).

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