Automatic meal delivery trolley capable of being protected

Abstract

The invention discloses an automatic meal delivery trolley capable of performing protection, belongs to the field of meal delivery, and solves the problems that a meal box is difficult to effectively restrain due to inertia force generated during emergency braking, and the shock absorption performance is limited, impact force generated at the moment of vehicle braking cannot be quickly absorbed and buffered due to the fact that most shock absorption systems of existing meal delivery trolleys are used for simply clamping and fixing. In order to solve the problem that soup overflows due to large displacement and collision of meal boxes in the trolley due to the fact that the meal boxes are arranged in the trolley, the automatic meal delivery trolley capable of conducting protection comprises an automatic meal delivery trolley body, a containing box fixedly connected to the upper portion of the automatic meal delivery trolley body and a material taking opening formed in the containing box, and a rotating mechanism is arranged on the inner side of the containing box. An elastic mechanism is arranged above the rotating mechanism, and when the serving trolley suddenly brakes or horizontally shakes, an elastic telescopic rod absorbs impact energy through deformation, so that the leakage risk of food caused by horizontal inertia is effectively reduced, and the transportation stability is improved.

Description

Technical Field

[0001] The present invention relates to the field of food delivery, and in particular to an automatic food delivery vehicle capable of providing protection. Background Art

[0002] An automated food delivery vehicle is an intelligent, unmanned delivery device primarily used for automated food transportation in restaurants, hotels, hospitals, and other settings. It autonomously plans routes through navigation systems (such as lidar and visual recognition) to deliver meals from the kitchen / preparation area to designated locations (such as dining tables, wards, and guest rooms).

[0003] Announcement No. CN118275164B: With the rapid development of the food delivery industry, automated food delivery vehicles have gained widespread use in restaurants, office buildings, campuses, and other locations due to their efficiency and convenience. However, during transportation, food delivery vehicles can easily spill food and soup due to unexpected situations such as bumpy roads, sudden braking, and turning. This not only affects the user's dining experience but can also cause food safety and hygiene issues.

[0004] At present, most food delivery vehicles on the market use the traditional fixed clamping method, but facing the inertial force generated during sudden braking, it is difficult to effectively restrain the lunch boxes. At the same time, the existing food delivery vehicle shock absorption system is mostly a simple clamping fixation, and its shock absorption performance is limited. It cannot quickly absorb and buffer the impact force generated by the vehicle braking at the moment, causing the lunch boxes to move and collide significantly in the vehicle, and then cause soup to overflow. In addition, the lunch box design of some food delivery vehicles also has defects, insufficient sealing performance, and low snapping strength between the box lid and the box body. When subjected to severe vibration, the box lid is easy to loosen or even fall off, further exacerbating the risk of soup spilling. During the delivery process of food delivery vehicles using traditional fixing and shock absorption methods, the spillage rate of lunch boxes containing soup is relatively high, which seriously restricts the improvement of food delivery service quality and the sustainable development of the industry.

[0005] To solve the above problems, an automatic food delivery vehicle capable of protection is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide an automatic food delivery vehicle capable of protection, thereby solving the problem of soup overflow.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic food delivery vehicle capable of protection, comprising an automatic food delivery vehicle body, a storage box fixedly connected to the upper portion of the automatic food delivery vehicle body, a material taking port provided inside the storage box, a rotating mechanism provided inside the storage box, and an elastic mechanism provided above the rotating mechanism; The rotating mechanism includes a rotating assembly and a pulling assembly, and the pulling assembly is arranged below the rotating assembly; The rotating assembly includes a motor fixedly connected to the lower inner side of the placement box, the output end of the motor is fixedly connected to the first connecting plate, the upper end of the first connecting plate is fixedly connected to the gear ring, the inner side of the gear ring is provided with a gear, the interior of the gear is fixedly connected to the first rotating shaft, the upper end of the first rotating shaft is fixedly connected to the second connecting plate, the interior of the second connecting plate is provided with a first slide groove, the interior of the first slide groove is provided with a first slider, a third connecting plate is provided above the second connecting plate, the interior of the third connecting plate is provided with a second slide groove for nesting the first slider, the upper end of the third connecting plate is fixedly connected to the fourth connecting plate, the interior of the fourth connecting plate is provided with a first groove, the interior of the first groove is fixedly connected to a first spring, the inner side of the first spring is provided with a first pull rod, the upper end of the first pull rod is fixedly connected to the supporting plate, and a damper fixedly connected to the supporting plate is provided between the supporting plate and the gear ring.

[0008] Preferably, the width of the lower end of the first chute is greater than the width of the upper end of the first chute, and the outer side surface of the lower end of the first sliding block fits with the inner side surface of the lower end of the first chute.

[0009] Preferably, the inner side surface of the first groove fits with the outer side surface of the first pull rod, and the appearance structure of the first pull rod is a rectangular parallelepiped.

[0010] Preferably, a plurality of gear rings are provided above the second connecting plate, and the spacing between the gear rings is smaller than the width of the bearing plate.

[0011] Preferably, the central axis of the first chute is perpendicular to the central axis of the second chute.

[0012] Preferably, the width of the upper end of the second chute is greater than the width of the lower end of the second chute, and the outer side surface of the upper end of the first sliding block fits with the inner side surface of the lower end of the second chute.

[0013] Preferably, the pulling assembly includes a fixed plate fixedly connected to the outer side of the fourth connecting plate, a first clamping plate is hingedly connected to the upper side of the supporting plate, an elastic clamping pad is fixedly connected to the inner side of the first clamping plate, a guide hole is provided inside the supporting plate, a second pull rod fixedly connected to the fixed plate is provided inside the guide hole, a third slide groove is provided on the outer side of the first clamping plate, a second slider hinged to the second pull rod is provided inside the third slide groove, the lower end of the first rotating shaft is rotatably connected to the fifth connecting plate, a hole is provided inside the main body of the automatic food delivery vehicle, the first connecting rod is slidably connected inside the hole, the lower end of the first connecting rod is rotatably connected to the roller, and the second spring is fixedly connected to the bottom of the fifth connecting plate.

[0014] Preferably, the central axis of the guide hole is parallel to the central axis of the first rotating shaft, and the inner side surface of the guide hole is in contact with the outer side surface of the second pull rod.

[0015] Preferably, the elastic mechanism includes a cylinder fixedly connected to the outer upper surface of the placement box, the lower end of the cylinder is fixedly connected to a sixth connecting plate, the lower end of the sixth connecting plate is fixedly connected to a heat preservation lamp, the inner upper surface of the placement box is fixedly connected to a second connecting rod, the second connecting rod and the central axis of the first rotating shaft are on the same vertical line, a third groove is provided inside the lower end of the second connecting rod, a first connecting block is provided on the inner side of the third groove, the lower end of the first connecting block is fixedly connected to an elastic telescopic rod, the lower end of the elastic telescopic rod is fixedly connected to the second groove, a second connecting block is provided on the inner side of the second groove, the lower end of the second connecting block is fixedly connected to a second splint, the inner side surface of the second groove is fitted with the outer side surface of the second connecting block, and the appearance structure of the second connecting block is spherical.

[0016] Preferably, the inner side surface of the third groove fits with the outer side surface of the first connecting block, and the appearance structure of the first connecting block is spherical.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a protective automatic food delivery vehicle. Through the linkage design of the second clamping plate and the first clamping plate, combined with the rotating heat preservation function of the heat preservation lamp, it ensures that the lunch boxes are stably clamped and evenly heated during transportation, thereby achieving firm fixation and continuous heat preservation of the lunch boxes, ensuring the temperature and taste of the food during transportation.

[0018] 2. The present invention provides a protective automatic food delivery vehicle. When the food delivery vehicle brakes suddenly or shakes horizontally, the elastic telescopic rod absorbs the impact energy through deformation. At the same time, the lateral movement of the second splint reduces the inertial force directly acting on the food box, thereby effectively reducing the risk of food spilling due to horizontal inertia and improving transportation stability.

[0019] 3. The present invention provides a protective automatic food delivery vehicle. When the food delivery vehicle tilts, the coordinated action of the roller and the second spring causes the clamping mechanism to automatically adjust, ensuring that the food boxes remain in a vertical state under the action of gravity, thereby preventing food from tipping over or spilling due to the tilt of the vehicle body, and significantly improving transportation safety.

[0020] 4. The present invention provides a protective automatic food delivery vehicle, which absorbs vibration energy through the elastic potential energy of the first spring via the up and down movement of the load-bearing plate, thereby reducing the impact of road bumps on the food boxes and further reducing the probability of food spillage.

[0021] 5. The present invention provides a protective automatic food delivery vehicle that ensures that the food box remains stable under various conditions such as horizontal, tilted, and vertical vibrations through the flexible fixation of the elastic clamping pad and the cooperation of the inertial buffer structure, thereby comprehensively optimizing the reliability of the food delivery process, maintaining the original state of the food to the greatest extent, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the right side cross-sectional structure of the placement box of the present invention; Figure 3 This is a schematic diagram of the appearance structure of the carrier plate of the present invention; Figure 4 For the present invention Figure 3 Schematic diagram of the structure at A in the middle; Figure 5 This is a schematic diagram of the appearance structure of the gear of the present invention; Figure 6 This is a schematic diagram of the right side cross-sectional structure of the first connecting block of the present invention; Figure 7 is a schematic diagram of a right side cross-sectional structure of a fourth connecting plate of the present invention; Figure 8 This is a schematic diagram of the appearance structure of the second spring of the present invention; Figure 9 Schematic diagram of the appearance structure of the second connecting rod of the present invention.

[0023] Figure: 1. Automatic food delivery vehicle body; 2. Placement box; 3. Feeding port; 4. Rotation mechanism; 5. Elastic mechanism; 41. Rotation assembly; 42. Pulling assembly; 4101. Motor; 4102. First connecting plate; 4103. Gear ring; 4104. Gear; 4105. First rotating shaft; 4106. Second connecting plate; 4107. First chute; 4108. First slider; 4109. Third connecting plate; 4110. Second chute; 4111. Fourth connecting plate; 4112. First groove; 4113. First spring; 4114. First pull rod; 4115. Loading plate; 4116. Damping ;4201, fixed plate; 4202, first splint; 4203, elastic clamping pad; 4204, guide hole; 4205, second pull rod; 4206, third slide groove; 4207, second slider; 4208, fifth connecting plate; 4209, hole; 4210, first connecting rod; 4211, roller; 4212, second spring; 501, cylinder; 502, sixth connecting plate; 503, heat lamp; 504, second connecting rod; 505, third groove; 506, first connecting block; 507, elastic telescopic rod; 508, second groove; 509, second connecting block; 510, second splint. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figures 1-9 The present invention provides a technical solution: an automatic food delivery vehicle capable of protection, comprising an automatic food delivery vehicle body 1, a placement box 2 fixedly connected to the upper portion of the automatic food delivery vehicle body 1, a material taking port 3 provided inside the placement box 2, a rotating mechanism 4 provided inside the placement box 2, and an elastic mechanism 5 provided above the rotating mechanism 4; The rotating mechanism 4 includes a rotating assembly 41 and a pulling assembly 42, and the pulling assembly 42 is arranged below the rotating assembly 41; The rotating assembly 41 includes a motor 4101 fixedly connected to the lower inner side of the placement box 2, the output end of the motor 4101 is fixedly connected to the first connecting plate 4102, the upper end of the first connecting plate 4102 is fixedly connected to the gear ring 4103, the inner side of the gear ring 4103 is provided with a gear 4104, the interior of the gear 4104 is fixedly connected to the first rotating shaft 4105, the upper end of the first rotating shaft 4105 is fixedly connected to the second connecting plate 4106, the interior of the second connecting plate 4106 is provided with a first slide groove 4107, the interior of the first slide groove 4107 is provided with a first slider 4108, and the first slider 4109 is provided with a first slider 4110. The width of the lower end of the groove 4107 is greater than the width of the upper end of the first sliding groove 4107, and the outer side surface of the lower end of the first sliding block 4108 is in contact with the inner side surface of the lower end of the first sliding groove 4107, so that the first sliding block 4108 will not move out of the inner side of the first sliding groove 4107 when it moves inside the first sliding groove 4107. A third connecting plate 4109 is provided above the second connecting plate 4106, and a second sliding groove 4110 for nesting the first sliding block 4108 is provided inside the third connecting plate 4109. The upper end of the third connecting plate 4109 is fixedly connected to the fourth connecting plate 4111. 1 is provided with a first groove 4112, the first spring 4113 is fixedly connected to the inside of the first groove 4112, and a first pull rod 4114 is provided on the inside of the first spring 4113. The inner side surface of the first groove 4112 is in contact with the outer side surface of the first pull rod 4114, and the appearance structure of the first pull rod 4114 is a rectangular parallelepiped, so that the first pull rod 4114 does not rotate when it moves inside the first groove 4112. The upper end of the first pull rod 4114 is fixedly connected to the bearing plate 4115. The gear ring 4103 is provided with multiple gears above the second connecting plate 4106, and the gear ring 41 03 is smaller than the width of the supporting plate 4115, so that the supporting plate 4115 will not move below the gear ring 4103, the central axis of the first slide groove 4107 is perpendicular to the central axis of the second slide groove 4110, the upper end width of the second slide groove 4110 is greater than the lower end width of the second slide groove 4110, and the upper end outer surface of the first slider 4108 is in contact with the lower end inner surface of the second slide groove 4110, so that the first slider 4108 will not move out of the inner side of the second slide groove 4110, and a damper 4116 fixedly connected to the supporting plate 4115 is provided between the supporting plate 4115 and the gear ring 4103.

[0026] The pulling assembly 42 includes a fixed plate 4201 fixedly connected to the outside of the fourth connecting plate 4111, a first clamping plate 4202 is hingedly connected to the upper side of the supporting plate 4115, an elastic clamping pad 4203 is fixedly connected to the inner side of the first clamping plate 4202, a guide hole 4204 is provided inside the supporting plate 4115, a second pull rod 4205 fixedly connected to the fixed plate 4201 is provided inside the guide hole 4204, a third sliding groove 4206 is provided on the outer side of the first clamping plate 4202, and a third sliding groove 4206 is provided inside the third sliding groove 4206. Two sliders 4207, the lower end of the first rotating shaft 4105 is rotatably connected to the fifth connecting plate 4208, the interior of the automatic food delivery vehicle body 1 is provided with a hole 4209, the interior of the hole 4209 is slidably connected to the first connecting rod 4210, the lower end of the first connecting rod 4210 is rotatably connected to the roller 4211, and the second spring 4212 is fixedly connected to the bottom of the fifth connecting plate 4208, the central axis of the guide hole 4204 is parallel to the central axis of the first rotating shaft 4105, and the inner side surface of the guide hole 4204 is in contact with the outer side surface of the second pull rod 4205, so that.

[0027] The elastic mechanism 5 includes a cylinder 501 fixedly connected to the outer upper surface of the placement box 2, the lower end of the cylinder 501 is fixedly connected to the sixth connecting plate 502, the lower end of the sixth connecting plate 502 is fixedly connected to the heat preservation lamp 503, the inner upper surface of the placement box 2 is fixedly connected to the second connecting rod 504, the second connecting rod 504 and the central axis of the first rotating shaft 4105 are on the same vertical line, the lower end of the second connecting rod 504 is provided with a third groove 505, the inner side of the third groove 505 is provided with a first connecting block 506, the lower end of the first connecting block 506 is fixedly connected to the elastic telescopic rod 507, the elastic telescopic rod 50 The lower end of 7 is fixedly connected to a second groove 508, and a second connecting block 509 is provided on the inner side of the second groove 508. The lower end of the second connecting block 509 is fixedly connected to a second splint 510. The inner side surface of the second groove 508 fits with the outer side surface of the second connecting block 509, and the appearance structure of the second connecting block 509 is spherical, so that the second connecting block 509 can rotate inside the second groove 508. The inner side surface of the third groove 505 fits with the outer side surface of the first connecting block 506, and the appearance structure of the first connecting block 506 is spherical, so that the first connecting block 506 can rotate inside the third groove 505.

[0028] When transporting the lunch box, the material taking port 3 is opened, and the lunch box is placed inside the storage box 2 from the inside of the material taking port 3, and the lunch box is clamped with the second clamping plate 510, and then the first clamping plate 4202 is pushed to tilt outward, so that the second slider 4207 moves downward, and then the fixing plate 4201 and the second pull rod 4205 move downward, so that all the first clamping plates 4202 are opened outward, and the upper end of the lunch box is placed inside the second clamping plate 510. After all the lunch boxes are fixed, the cylinder 501, the sixth connecting plate 502 and the heat preservation lamp 503 are started to move downward to keep the lunch box warm, and the motor 4101 is started. It drives the first connecting plate 4102 and the gear ring 4103 to rotate forward and reverse at a fixed time, so that the gear 4104 rotates, and the first rotating shaft 4105 rotates, and then drives the second connecting plate 4106, the first slide groove 4107, the first slider 4108, and the second connecting plate 4106 to rotate, so that the fourth connecting plate 4111, the first groove 4112, the first spring 4113, the first pull rod 4114, and the supporting plate 4115 rotate, so that the first splint 4202 and the elastic clamping pad 4203 rotate, so that the lunch box located inside the elastic clamping pad 4203 rotates slowly and is evenly heated by the heat preservation lamp 503.

[0029] After the above actions are completed, the automatic meal delivery vehicle body 1 is started to automatically deliver meals. When the automatic meal delivery vehicle body 1 encounters an emergency brake or other circumstances and the meal box moves horizontally due to inertia, the upper end width of the second slide groove 4110 is greater than the lower end width of the second slide groove 4110, and the upper end outer side surface of the first slider 4108 is in contact with the lower end inner side surface of the second slide groove 4110, the lower end width of the first slide groove 4107 is greater than the upper end width of the first slide groove 4107, and the lower end outer side surface of the first slider 4108 is in contact with the lower end inner side surface of the first slide groove 4107, and the central axis of the first slide groove 4107 is perpendicular to the central axis of the second slide groove 4110, so that the meal box will move horizontally under the action of inertia, driving the elastic telescopic rod 507, the second groove 508, the second connecting block 509 and the second clamping plate 510 to move horizontally, so that the acting force is converted into elastic potential energy of the elastic telescopic rod 507, reducing the acting force directly acting on the food in the meal box, and reducing the food spillage rate.

[0030] When the automatic food delivery vehicle body 1 is delivering food automatically, if the automatic food delivery vehicle body 1 tilts due to collision or the like, the first connecting rod 4210 and the roller 4211 tilt and hang in the air. Under the action of the elastic potential energy of the second spring 4212 and the roller 4211, the fifth connecting plate 4208 is driven to move downward, driving the first rotating shaft 4105 and the fourth connecting plate 4111, the first spring 4113 of the first groove 4112, the first pull rod 4114 and the fixed plate 4201 to move downward, so that the second pull rod 4205 moves downward from the guide hole 4204, driving the second slider 4207 and the first clamping plate 4202 to tilt and swing, so that the elastic The clamping pad 4203 loses its position limit on the lunch box because the inner side of the second groove 508 fits with the outer side of the second connecting block 509, and the appearance structure of the second connecting block 509 is spherical, and the inner side of the third groove 505 fits with the outer side of the first connecting block 506, and the appearance structure of the first connecting block 506 is spherical, so that the lunch box and the food inside are kept in a vertical downward state under the action of gravity and the action of the second connecting rod 504 and the elastic telescopic rod 507, reducing the tilt of the lunch box and the food inside, reducing the food leakage rate, and at the same time increasing the chance of the food inside remaining intact, reducing the situation where the food inside becomes very messy.

[0031] When the automatic food delivery vehicle body 1 is delivering food automatically, when it shakes up and down, the kinetic energy of the up and down movement of the supporting plate 4115 is converted into the elastic potential energy of the first spring 4113. When the first spring 4113 is reset, the damping 4116 performs shock absorption again to reduce the food spillage rate.

[0032] When horizontal inertia occurs, when the elastic clamping pad 4203 fixes the lunch box, the lunch box is restricted by the elastic clamping pad 4203 and the first clamping plate 4202, and the lunch box will not tilt and swing with the second clamping plate 510 due to horizontal inertia, thereby reducing the food leakage rate.

[0033] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0034] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A protective automatic food delivery vehicle, comprising an automatic food delivery vehicle body (1), a storage box (2) fixedly connected to the upper portion of the automatic food delivery vehicle body (1), and a material taking port (3) arranged inside the storage box (2), characterized in that: A rotating mechanism (4) is provided on the inner side of the placement box (2), and an elastic mechanism (5) is provided above the rotating mechanism (4); The rotating mechanism (4) comprises a rotating assembly (41) and a pulling assembly (42), wherein the pulling assembly (42) is arranged below the rotating assembly (41); The rotating assembly (41) includes a motor (4101) fixedly connected to the lower inner side of the placement box (2), the output end of the motor (4101) is fixedly connected to a first connecting plate (4102), the upper end of the first connecting plate (4102) is fixedly connected to a gear ring (4103), the inner side of the gear ring (4103) is provided with a gear (4104), the interior of the gear (4104) is fixedly connected to a first rotating shaft (4105), the upper end of the first rotating shaft (4105) is fixedly connected to a second connecting plate (4106), the interior of the second connecting plate (4106) is provided with a first slide groove (4107), the interior of the first slide groove (4107) is provided with a first slider (4108), the upper end of the second connecting plate (4106) is fixedly connected to a first rotating shaft (4105), and the upper end of the second connecting plate (4106) is fixedly connected to a first rotating shaft (4105). A third connecting plate (4109) is provided on the side, and a second sliding groove (4110) for nesting the first sliding block (4108) is provided inside the third connecting plate (4109), and the upper end of the third connecting plate (4109) is fixedly connected to the fourth connecting plate (4111), and a first groove (4112) is provided inside the fourth connecting plate (4111), and a first spring (4113) is fixedly connected inside the first groove (4112), and a first pull rod (4114) is provided on the inner side of the first spring (4113), and the upper end of the first pull rod (4114) is fixedly connected to the supporting plate (4115), and a damper (4116) fixedly connected to the supporting plate (4115) is provided between the supporting plate (4115) and the gear ring (4103).

2. The protective automatic food delivery vehicle according to claim 1, characterized in that: The width of the lower end of the first slide groove (4107) is greater than the width of the upper end of the first slide groove (4107), and the outer side surface of the lower end of the first slider (4108) fits with the inner side surface of the lower end of the first slide groove (4107).

3. The protective automatic food delivery vehicle according to claim 1, characterized in that: The inner side surface of the first groove (4112) fits with the outer side surface of the first pull rod (4114), and the appearance structure of the first pull rod (4114) is a rectangular parallelepiped.

4. The protective automatic food delivery vehicle according to claim 1, characterized in that: A plurality of the toothed rings (4103) are provided above the second connecting plate (4106), and the spacing between the toothed rings (4103) is smaller than the width of the supporting plate (4115).

5. The protective automatic food delivery vehicle according to claim 1, characterized in that: The central axis of the first slide groove (4107) is perpendicular to the central axis of the second slide groove (4110).

6. The protective automatic food delivery vehicle according to claim 1, characterized in that: The width of the upper end of the second slide groove (4110) is greater than the width of the lower end of the second slide groove (4110), and the outer surface of the upper end of the first slider (4108) is in contact with the inner surface of the lower end of the second slide groove (4110).

7. The protective automatic food delivery vehicle according to claim 1, characterized in that: The pulling assembly (42) includes a fixed plate (4201) fixedly connected to the outside of the fourth connecting plate (4111), a first clamping plate (4202) is hingedly connected to the upper side of the supporting plate (4115), an elastic clamping pad (4203) is fixedly connected to the inner side of the first clamping plate (4202), a guide hole (4204) is provided inside the supporting plate (4115), a second pull rod (4205) fixedly connected to the fixed plate (4201) is provided inside the guide hole (4204), a third sliding groove (4205) is provided on the outer side of the first clamping plate (4202), and a plurality of guide holes (4204) are provided on the inner side of the first clamping plate (4202). 6), a second slider (4207) hingedly connected to the second pull rod (4205) is provided on the inner side of the third slide groove (4206), the lower end of the first rotating shaft (4105) is rotatably connected to the fifth connecting plate (4208), a hole (4209) is provided inside the main body (1) of the automatic food delivery vehicle, the inside of the hole (4209) is slidably connected to the first connecting rod (4210), the lower end of the first connecting rod (4210) is rotatably connected to the roller (4211), and the lower part of the fifth connecting plate (4208) is fixedly connected to the second spring (4212).

8. The protective automatic food delivery vehicle according to claim 7, characterized in that: The central axis of the guide hole (4204) is parallel to the central axis of the first rotating shaft (4105), and the inner side surface of the guide hole (4204) is in contact with the outer side surface of the second pull rod (4205).

9. The protective automatic food delivery vehicle according to claim 1, characterized in that: The elastic mechanism (5) includes a cylinder (501) fixedly connected to the outer upper surface of the placement box (2), the lower end of the cylinder (501) is fixedly connected to a sixth connecting plate (502), the lower end of the sixth connecting plate (502) is fixedly connected to a heat preservation lamp (503), the inner upper surface of the placement box (2) is fixedly connected to a second connecting rod (504), the second connecting rod (504) and the central axis of the first rotating shaft (4105) are on the same vertical line, the lower end of the second connecting rod (504) is provided with a third groove (505), the third groove (505) is fixedly connected to the inner upper surface of the placement box (2), the second connecting rod (504) and the central axis of the first rotating shaft (4105) are on the same vertical line, and the lower end of the second connecting rod (504) is provided with a third groove (505). A first connecting block (506) is provided on the inner side of the groove (505), the lower end of the first connecting block (506) is fixedly connected to an elastic telescopic rod (507), the lower end of the elastic telescopic rod (507) is fixedly connected to a second groove (508), a second connecting block (509) is provided on the inner side of the second groove (508), the lower end of the second connecting block (509) is fixedly connected to a second splint (510), the inner side surface of the second groove (508) is fitted with the outer side surface of the second connecting block (509), and the appearance structure of the second connecting block (509) is spherical.

10. The automatic food delivery vehicle capable of protection according to claim 9, characterized in that: The inner side surface of the third groove (505) fits with the outer side surface of the first connecting block (506), and the appearance structure of the first connecting block (506) is spherical.

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