A shock-absorbing food delivery robot and a shock-absorbing method

Abstract

The application discloses a shock-absorbing dish-delivering robot and a shock-absorbing method, and particularly relates to the technical field of dish-delivering robots, and solves the technical problem that the shock-absorbing structure of the prior art dish-delivering robot is mostly composed of repelling first and second permanent magnets, and inertia force exists when the same-stage magnets repel each other, and the dish-delivering robot shakes when encountering an obstacle, which easily leads to spilling of the delivered dishes. The technical scheme is that a novel shock-absorbing mechanism is provided, and a corresponding self-locking mechanism is matched; the application can absorb shock when the dishes are transported, and the self-locking rod locks the shock-absorbing device when the dish-delivering robot returns, so that the shock-absorbing device is prevented from vibrating and affecting the movement speed of the dish-delivering robot when the dish-delivering robot returns.

Description

Technical Field

[0001] This invention relates to the field of food delivery robot technology, specifically to a shock-absorbing food delivery robot and a shock-absorbing method. Background Technology

[0002] The rise and widespread adoption of food delivery robots in the catering industry reflects technological progress and social development trends. With rising labor costs and rapid technological advancements, the catering industry is seeking more efficient and cost-effective service methods, making food delivery robots an important solution. These robots not only improve service efficiency and reduce labor costs but also enhance the customer dining experience to some extent.

[0003] With further technological advancements and decreasing costs, food delivery robots are expected to see wider application in the catering industry. Future food delivery robots will be more intelligent, better able to understand and respond to customer needs, and even engage in simple conversations. Simultaneously, with the development of artificial intelligence and machine learning technologies, the ability of food delivery robots to handle complex environments and tasks will be significantly enhanced, bringing about deeper changes to the catering industry.

[0004] Currently, most existing shock absorption structures for food delivery robots consist of a first permanent magnet and a second permanent magnet that repel each other. The repulsion between magnets of the same class effectively reduces vibration, but there is inertial force, which causes the robot to wobble and shake when it encounters obstacles, easily leading to spillage of the delivered food. Summary of the Invention

[0005] Therefore, this invention solves the technical problem that most shock-absorbing structures of food delivery robots in the prior art consist of a first permanent magnet and a second permanent magnet that repel each other. When magnets of the same polarity repel each other, there is an inertial force, which causes the robot to shake and sway when encountering obstacles, easily leading to spillage of the delivered food. The shock-absorbing device and method provided by this invention enable the food delivery robot to quickly stop vibrating when it encounters small obstacles, thereby preventing food from spilling. When the food is delivered to the designated table, the self-locking rod locks the shock-absorbing device when the food delivery robot returns, preventing the vibration of the shock-absorbing device from affecting the movement speed of the food delivery robot on the return trip.

[0006] The shock-absorbing food delivery robot provided by the present invention specifically includes a chassis, a drive mechanism disposed below the chassis, a food placement rod disposed above the chassis, and a food placement tray disposed on the food placement rod; a shock-absorbing mechanism disposed inside the food placement rod; the drive mechanism is used to control the movement of the device, and the shock-absorbing mechanism is used to absorb shock when the device moves.

[0007] Furthermore, the shock absorption mechanism includes a push rod disposed within a cavity inside the vegetable-placement rod; the top of the push rod is connected to the bottom of the vegetable-placement tray; the push rod passes through a fixed plate, which is disposed inside the vegetable-placement rod and connected to its side wall; a magnet is connected to the bottom of the push rod; a spring is disposed between the fixed plate and the magnet; a closed coil is disposed below the magnet. The push rod passes through the spring. The upper end of the magnet is its S pole, and the lower end is its N pole. The closed coil is connected to the side wall of the vegetable-placement rod. When the magnet moves up and down, the magnetic field lines passing through the closed coil change, thus inducing a current in the closed coil. According to Lenz's law, the magnetic field generated by the induced current will hinder the magnet and the coil from approaching or moving away. The magnet will be resisted by the Ampere force generated by the coil, so the magnet will stop more quickly, thereby rapidly stopping the vibration of the vegetable-placement rack of the delivery robot.

[0008] Furthermore, the drive mechanism includes wheels disposed below the chassis; the wheels are coaxially arranged with the motor output shaft, and the motor is fixed to the lower surface of the chassis, thereby driving the entire device to move.

[0009] Furthermore, the push rod, fixing plate, and vegetable rack are provided with transversely communicating holes; a self-locking rod is installed inside the holes. When the food delivery robot delivers food, a shock absorption system is required to prevent spillage of food and soup from the vegetable rack. However, the shock absorption system is not needed during the return trip; in fact, vibrations from the shock absorption system can affect the return speed of the food delivery robot. The self-locking rod, which secures the push rod, prevents the vibrations of the magnet and spring from affecting the robot's operating speed.

[0010] Furthermore, the vegetable tray has multiple layers, and each layer of the vegetable tray has a vegetable rack underneath. The vegetable rack is equipped with a shock-absorbing device to transport various vegetables.

[0011] Furthermore, a sensor bracket is provided at the front end of the chassis for mounting sensors.

[0012] The present invention also provides a shock absorption method based on the above-mentioned shock-absorbing food delivery robot, comprising the following steps:

[0013] S1: In the initial state, the spring is in an uncompressed state, the push rod, the fixed plate and the hole on the vegetable placing rod are on the same horizontal plane, the self-locking rod is located in the hole to self-lock the push rod, keep the vegetable placing plate stable, and make it easy to place the vegetables on the vegetable placing plate;

[0014] S2: After the food is placed, pull out the self-locking lever. The motor will drive the device to move. During the movement, when the device encounters a small obstacle or an uneven road, the push rod connected to the food tray will vibrate. The push rod will move vertically up and down inside the spring. The push rod will exert a force on the magnet, thereby pushing the magnet to move up and down. When the magnet moves, the magnetic field lines passing through the closed coil will change, and an induced current will be generated in the closed coil. According to Lenz's law, the magnetic field generated by the induced current will hinder the magnet and the coil from getting closer or away. The magnet will be hindered by the Ampere force generated by the closed coil, causing the magnet to stop faster.

[0015] S3: When the food is delivered to its destination, the spring resets, and the self-locking lever is inserted again to achieve self-locking of the push lever. Then the robot returns to its original position.

[0016] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0017] 1. The present invention provides a shock-absorbing food delivery robot. When the magnet moves up and down, the magnetic field lines passing through the closed coil will change, thus generating an induced current in the closed coil. According to Lenz's law, the magnetic field generated by the induced current will hinder the magnet and the coil from getting closer or away. The magnet will be hindered by the Ampere force generated by the coil, and the magnet will stop more quickly, thereby quickly stopping the vibration of the food delivery robot's food rack and preventing the generation of inertial force. This allows the food delivery robot to move smoothly, which on the one hand improves the efficiency of food delivery and saves labor costs, and on the other hand improves the stability of the movement process.

[0018] 2. The present invention provides a shock-absorbing food delivery robot, which locks the push rod by inserting a self-locking rod into the holes on the push rod, the fixing plate and the food placement rod, thereby maintaining the stability of the food placement tray and reducing the vibration of the food placement tray.

[0019] 3. This invention provides a shock-absorbing method for a shock-absorbing food delivery robot. When placing food, the self-locking rod is located in the hole to self-lock the push rod, maintaining the stability of the food tray and facilitating the placement of food on the food tray. When transporting food, the self-locking rod is pulled out to facilitate the operation of the shock-absorbing mechanism. After the food is transported, the self-locking rod is inserted again to reduce vibration when the device returns, avoiding the impact of the vibration of the magnet and spring on the running speed of the food delivery robot. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall structure of the shock absorption mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the vegetable holder of the present invention;

[0024] Figure 4 This is a schematic diagram of the self-locking rod of the present invention;

[0025] Figure 5 This is a schematic diagram of the push rod after self-locking according to the present invention;

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Chassis; 2. Sensor bracket; 3. Wheels; 4. Vegetable placing rod; 5. Motor; 6. Vegetable placing tray; 7. Push rod; 8. Fixing plate; 9. Magnet S pole; 10. Magnet N pole; 11. Spring; 12. Closed coil; 13. Self-locking rod. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1:

[0030] This embodiment provides a shock-absorbing food delivery robot, such as Figure 1 As shown, the device includes a chassis 1, a drive mechanism located below the chassis 1, a vegetable placement rod 4 located above the chassis 1, and a vegetable placement tray 6 located on the vegetable placement rod 4. A shock absorption mechanism is located inside the vegetable placement rod 4. The drive mechanism is used to control the movement of the device, and the shock absorption mechanism is used to absorb shocks when the device moves.

[0031] In this embodiment, the shock absorption mechanism includes a push rod 7, which is disposed in the cavity inside the vegetable placement rod 4; the top of the push rod 7 is connected to the bottom of the vegetable placement tray 6; the push rod 7 passes through a fixing plate 8, which is disposed inside the vegetable placement rod 4 and connected to the side wall of the vegetable placement rod 4; a magnet is connected to the bottom of the push rod 7; a spring 11 is disposed between the fixing plate 8 and the magnet; a closed coil 12 is disposed below the magnet. The push rod 7 passes through the spring 11. The upper end of the magnet is the magnet S pole 9, and the lower end is the magnet N pole 10. A sensor bracket 2 is disposed at the front end of the chassis 1; the closed coil 12 is connected to the side wall of the vegetable placement rod 4.

[0032] When the food delivery robot traverses minor obstacles or uneven surfaces, the push rod 7, connected to the food tray 6, vibrates due to the bumps. During the downward stroke of the vibration, the push rod 7 exerts a downward force on the magnet. The magnet, connected to the spring 11, vibrates up and down under the force, causing the magnet to move up and down. As the magnet moves up and down, the magnetic field lines passing through the closed coil 12 change, inducing a current in the coil 12. According to Lenz's law, the magnetic field generated by the induced current opposes the magnet and coil moving closer or further apart. The magnet experiences an Ampere force from the coil, causing it to stop more quickly, thus rapidly stopping the vibration of the food delivery robot's food tray. The sensor bracket 2 can be used to mount infrared and ultrasonic sensors to control the robot's tracking and obstacle avoidance. It can automatically brake when encountering obstacles to avoid collisions and automatically stop at the designated location for customers to retrieve their food.

[0033] In this embodiment, the drive mechanism includes wheels disposed below the chassis 1; the wheels are coaxially arranged with the output shaft of the motor 5, and the motor 5 is fixed to the lower surface of the chassis 1. The motor 5 is a DC geared motor, and the four wheels 3 connected to the motor 5 have two drive wheels at the rear end; thus driving the robot to move. The motor 5 can be connected to the two rear wheels 3 and driven by the rear wheels 3; alternatively, the motor 5 can be connected to all four wheels 3 and driven by all four wheels 3.

[0034] In this embodiment, the push rod 7, the fixing plate 8, and the vegetable placing rod 4 are provided with transversely connected holes; a self-locking rod 13 is provided in the holes.

[0035] When there is no food on the serving plate 6, the spring 11 is in an uncompressed state, and the push rod 7, the fixing plate 8 and the hole on the serving rod 4 are on the same horizontal plane. The self-locking rod 13 is inserted into the hole to self-lock the push rod 7, which can keep the serving plate 6 stable.

[0036] Example 2:

[0037] Unlike the above embodiments, in this embodiment, the vegetable tray 6 has multiple layers, and each layer of the vegetable tray 6 has a vegetable placing rod 4 underneath, and each vegetable placing rod 4 has a shock-absorbing device inside. For example Figure 1 In the middle, the vegetable tray 6 has two layers, and each layer of the vegetable tray 6 is equipped with a vegetable rod 4. The bottom layer of the vegetable rod 4 is connected to the base plate 1; the other layers of vegetable rod 4 are connected to the upper surface of the corresponding vegetable tray 6 below them. Each layer of vegetable rod 4 is equipped with a shock-absorbing device to realize shock-absorbing transportation of various vegetables.

[0038] Example 3:

[0039] This embodiment provides a shock reduction method based on the above-mentioned shock-absorbing food delivery robot, including the following steps:

[0040] S1: In the initial state, the spring 11 is in an uncompressed state, the push rod 7, the fixing plate 8 and the hole on the vegetable placement rod 4 are on the same horizontal plane, and the self-locking rod 13 is located in the hole to self-lock the push rod 7, keeping the vegetable placement plate 6 stable and making it easy to place the vegetables on the vegetable placement plate 6.

[0041] S2: After the food is placed, pull out the self-locking lever 13. The motor 5 will work to drive the device to move. During the movement, when the device encounters a small obstacle or an uneven road, the push rod 7 connected to the food tray 6 will vibrate. The push rod 7 will move vertically up and down inside the spring 11. The push rod 7 will exert a force on the magnet, thereby pushing the magnet to move up and down. When the magnet moves, the magnetic field lines passing through the closed coil 12 will change, and an induced current will be generated in the closed coil 12. According to Lenz's law, the magnetic field generated by the induced current will hinder the magnet and the coil from getting closer or away. The magnet will be hindered by the Ampere force generated by the closed coil 12, causing the magnet to stop faster.

[0042] S3: When the food is delivered to its destination, spring 11 resets, and the self-locking rod 13 is inserted again to lock the push rod 7. Then the robot returns to its original position.

[0043] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A shock-absorbing food delivery robot, characterized in that, The device includes a chassis (1), a drive mechanism is provided below the chassis (1); a vegetable placement rod (4) is provided above the chassis (1), and a vegetable placement tray (6) is provided on the vegetable placement rod (4); a shock absorption mechanism is provided inside the vegetable placement rod (4); the drive mechanism is used to control the movement of the device, and the shock absorption mechanism is used to absorb shock when the robot moves. The shock absorption mechanism includes a push rod (7), a fixed plate (8), a self-locking rod (13), a spring (11), a magnet, and a closed coil (12). The push rod (7) is located in the cavity inside the vegetable rack (4). The top of the push rod (7) is connected to the bottom of the vegetable rack (6). The push rod (7) passes through the fixed plate (8). The fixed plate (8) is located inside the vegetable rack (4) and connected to the side wall of the vegetable rack (4). A magnet is connected to the bottom of the push rod (7). A spring (11) is provided between the fixed plate (8) and the magnet. A closed coil (12) is provided below the magnet. The push rod (7) passes through the spring (11); The upper end of the magnet is the S pole (9), and the lower end is the N pole (10); The drive mechanism includes wheels disposed below the chassis (1); the wheels are coaxially disposed with the output shaft of the motor (5), and the motor (5) is fixed on the lower surface of the chassis (1); The push rod (7), the fixing plate (8), and the vegetable placing rod (4) are provided with transversely connected holes; a self-locking rod (13) is provided in the holes; The vegetable tray (6) is provided with multiple layers, and each layer of the vegetable tray (6) is provided with a vegetable rod (4) below it. Each vegetable rod (4) is provided with a shock-absorbing mechanism. A sensor bracket (2) is provided at the front end of the chassis (1); The closed coil (12) is connected to the side wall of the vegetable rack (4).

2. The shock absorption method for the shock-absorbing food delivery robot according to claim 1, characterized in that, Includes the following steps: S1: In the initial state, the spring (11) is in an uncompressed state, the push rod (7), the fixing plate (8) and the holes on the vegetable placement rod (4) are on the same horizontal plane, the self-locking rod (13) is located in the hole to self-lock the push rod (7), keep the vegetable placement plate (6) stable, and make it easy to place the vegetables on the vegetable placement plate (6); S2: After the food is placed, pull out the self-locking rod (13). The motor (5) will drive the device to move. During the movement, when the device encounters a small obstacle or an uneven road, the push rod (7) connected to the food tray (6) will vibrate. The push rod (7) will move vertically up and down inside the spring (11). The push rod (7) will exert force on the magnet, thereby pushing the magnet to move up and down. When the magnet moves, the magnetic field lines passing through the closed coil (12) will change. An induced current will be generated in the closed coil (12). According to Lenz's law, the magnetic field generated by the induced current will hinder the magnet and the coil from getting closer or away. The magnet will be hindered by the Ampere force generated by the closed coil (12), causing the magnet to stop faster. S3: When the food is delivered to its destination, the spring (11) resets and the self-locking rod (13) is inserted again to achieve self-locking of the push rod (7).

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