An intelligent self-propelled refrigerated fruit and vegetable picking box

Abstract

The present invention discloses an intelligent self-propelled refrigerated picking box for fruits and vegetables, comprising a refrigeration buffer box, a control box, and a walking component, wherein the walking component comprises a thigh, a calf, and a foot, the refrigeration buffer box is installed on the top of the control box, the refrigeration component of the refrigeration box comprises a semiconductor refrigeration stack, the bottom of the control box is connected to the upper joint of the thigh through a first steering gear, the lower joint of the thigh is connected to the upper joint of the calf through a second steering gear, the lower joint of the calf is connected to the foot through a third steering gear, and the first steering gear, the second steering gear, and the third steering gear are all connected to the control box. The present invention overcomes the problems of difficult cooling and easy damage in fruit and vegetable picking, as well as the technical difficulties of insufficient volume and low refrigeration efficiency in the existing semiconductor refrigeration technology. The present invention provides a stable-moving intelligent self-propelled refrigerated picking box for fruits and vegetables, which is a modern field picking equipment necessary for fruit and vegetable cold chain logistics.

Description

Technical Field

[0001] The present invention relates to the field of artificial intelligence fruit and vegetable picking boxes, and in particular to an intelligent self-propelled fruit and vegetable refrigeration picking box. Background Art

[0002] Cold chain transportation of fruits and vegetables can greatly increase the shelf life of fruits and vegetables. At present, vacuum pre-cooling technology, cold chain vehicle technology, and cold storage technology are quite mature and put into use. However, the time interval from the picking of fruits and vegetables to their transportation to cold chain vehicles or cold storage is generally more than 1-3 hours, or even longer. Most fruits and vegetables, especially rare fruits and vegetables, mature in summer and autumn, and the temperature is generally very high when they are picked. How to ensure that the fruits and vegetables are cooled to the refrigeration temperature as soon as they are picked until they are transported to cold chain vehicles or cold storage, and to minimize the collision damage between fruits and vegetables or between fruits and vegetables and the wall of the picking container during the picking of fruits and vegetables is a technical problem that needs to be solved urgently, and the technology or equipment in this area is still in a blank stage.

[0003] The quality of picking fruits and vegetables in the field directly affects the quality of fruits and vegetables and the subsequent preservation effect. First of all, fruits and vegetables still have a high respiration intensity after harvesting. Especially when the temperature is high during the picking season, the picked fruits are easily prone to low moisture and nutrition due to high-intensity exhalation, which is not conducive to the subsequent preservation of fruits and vegetables. Secondly, the structure of the picking container has a great impact on the quality of fruits and vegetables, especially when harvesting some delicate fruits and vegetables such as wolfberries and blueberries. If the picking container lacks a fruit and vegetable buffer structure, such as when using a hard container for harvesting, the process of placing fruits and vegetables into the harvesting container will cause strong collisions and squeezing between the harvested fruits. In severe cases, it will cause damage to the skin of fruits and vegetables, resulting in further decline in the quality of fruits and vegetables, which is not conducive to subsequent preservation. Furthermore, when picking fruits and vegetables, transporting them to the field is a labor-intensive, high-intensity physical labor. In order to reduce labor intensity, the current traditional field transportation method is to use a wheeled cart for transportation. However, considering the uneven road surface and many roadblocks in the field, the transportation by the cart will inevitably cause collisions between the transported fruits and vegetables, which will increase the possibility of damage to the fruits and vegetables.

[0004] Semiconductor technology is a new type of refrigeration technology developed in the late 1950s. Semiconductor refrigeration, also known as thermoelectric refrigeration, electronic refrigeration or thermoelectric refrigeration, is a refrigeration method characterized by thermoelectric effect. It is composed of two main special semiconductor materials, P-type semiconductor material and N-type semiconductor material, which form NP junctions, form thermocouple pairs, and produce Peltier effect (when a DC current is passed through a closed loop composed of two different metals, one node will be hot and the other node will be cold), that is, a new type of refrigeration through DC refrigeration. Semiconductor refrigeration technology has the advantages of fast refrigeration speed, small size, easy to carry, no refrigerant, no pollution, no noise, easy maintenance, and long life. Semiconductor refrigeration technology has been widely used in medicine, agronomy, industry, and daily life. Generally, it is more used in some refrigeration equipment with small cooling capacity. For example, the existing invention patent "A smart and convenient box based on semiconductor refrigeration such as CN209777125U" has a small cooling power and a small volume, which is suitable for outdoor water sample collection. From the cooling power (inferred from the area of ​​the solar panel) to the design and function, it is not suitable for fruit and vegetable picking. Another example is the existing invention patent "Semiconductor Refrigeration Equipment CN209857420U". The semiconductor refrigeration and heat dissipation components of this technology are designed at the bottom of the equipment, and the cold air diffusion efficiency is low. This technology also has no temperature control system. This invention is not suitable for fruit and vegetable picking from the design to the function. At present, there is no feasible invention or report of a fruit and vegetable picking box using semiconductor refrigeration.

[0005] In addition, due to the characteristics of semiconductor refrigeration, if a high-power semiconductor refrigeration stack is used (such as larger than 20 x 20cm, composed of many semiconductor refrigeration chips in parallel), the weight of the battery and refrigeration components will be heavier, and the low-temperature picking box produced in this way will no longer be convenient for manual carrying. The larger semiconductor low-temperature picking box can avoid high-frequency back-and-forth transportation between the field and the cold chain vehicle, which is conducive to improving the efficiency of picking. Summary of the invention

[0006] The purpose of the present invention is to overcome the technical difficulties such as high labor intensity and frequent damage to fruits and vegetables when picking fruits and vegetables, and to provide a stable-moving intelligent self-propelled refrigerated fruit and vegetable picking box.

[0007] The objective of the present invention is achieved through the following technical scheme: an intelligent self-propelled fruit and vegetable refrigeration picking box, comprising a refrigeration buffer box, a control box, and a walking component, wherein the walking component comprises a thigh, a calf and a foot, the refrigeration buffer box is installed on the top of the control box, the bottom of the control box is connected to the upper joint of the thigh through a first steering gear, the lower joint of the thigh is connected to the upper joint of the calf through a second steering gear, the lower joint of the calf is connected to the foot through a third steering gear, and the first steering gear, the second steering gear, and the third steering gear are all connected to the control box.

[0008] A better choice is that the foot includes a foot cover, a foot base, a driving wheel and a motor, the top of the foot cover is connected to the lower joint of the calf through a third servo, the bottom of the foot cover is connected to the foot base, the motor is installed on the foot base, the rotating shaft of the motor is connected to the driving wheel, and the motor is connected to a control box.

[0009] A better option is that the walking component also includes a gyro stabilizer, which is installed on the foot and connected to the control box.

[0010] A more preferred option is that the control box includes a travel power supply and a controller, the travel power supply is connected to the controller, and the first steering gear, the second steering gear and the third steering gear are all connected to the controller.

[0011] A better option is that the refrigeration buffer box is provided with a camera, and the camera is connected to the control box.

[0012] A better choice is that the refrigeration buffer box includes an outer shell, a semiconductor refrigeration component, a delivery buffer channel, a rechargeable battery component and a digital display temperature control system, the inner cavity of the outer shell is equipped with multiple insulation cavities, the rechargeable battery component is installed on the outer shell, the insulation cavity is provided with a mounting hole, the semiconductor refrigeration component is installed in the mounting hole, the digital display temperature control system is installed in the insulation cavity, the semiconductor refrigeration component is connected to the digital display temperature control system, and the digital display temperature control system and the semiconductor refrigeration component are both connected to the rechargeable battery assembly.

[0013] A better choice is that the semiconductor refrigeration component includes a semiconductor refrigeration sheet, a cold-end radiator and a hot-end radiator, the semiconductor refrigeration sheet is installed in the mounting hole, the top of the semiconductor refrigeration sheet is connected to the hot-end radiator, the bottom of the semiconductor refrigeration sheet is connected to the cold-end radiator, and the semiconductor refrigeration sheet is connected to a digital display temperature control system.

[0014] A better option is that the semiconductor refrigeration assembly also includes a cold air fan, which is installed on the side of the cold end radiator and connected to the rechargeable battery assembly.

[0015] A more preferred option is that the shell, the heat preservation cavity and the delivery buffer channel form a heat dissipation channel, the top of the heat dissipation channel is provided with a plurality of first ventilation holes, the heat dissipation channel is connected to the delivery buffer channel through the second ventilation holes, a heat dissipation exhaust fan is provided on the side of the heat dissipation channel away from the delivery buffer channel, and the heat dissipation exhaust fan is connected to the rechargeable battery assembly. A more preferred option is that the delivery buffer channel includes a heat preservation cover, a buffer cavity and a plurality of buffer cover sheets, the buffer cavity is connected to the shell through the heat preservation cover and extends to the inner cavity of the heat preservation cavity, a plurality of the buffer cover sheets are installed on the inner wall of the buffer cavity, and the plurality of the buffer cover sheets are arranged in a staggered manner with gaps.

[0016] The present invention has the following advantages and beneficial effects compared with the prior art:

[0017] 1. The present invention includes a refrigeration buffer box, a control box, and a walking assembly. The picking box has a large volume, which can suppress the breathing intensity of fruits and vegetables picked in the field, increase the number of fruits and vegetables harvested in a single field, reduce mechanical damage to fruits and vegetables, and avoid high-frequency back-and-forth transportation between the field and the cold storage or cold chain vehicle during the picking process; it not only ensures the quality of fruits and vegetables but also saves manpower. At the same time, it also realizes the cold chain coverage of fruits and vegetables from being picked in the field to being transported to the cold chain vehicle or cold storage.

[0018] 2. The present invention realizes the field movement of the picking box through the foot part including a foot cover, a foot base, a driving wheel and a motor. Due to its smooth movement, the fruits and vegetables in the box will not be shaken or impacted too much, reducing the mechanical damage between the fruits and vegetables and ensuring the picking quality of the fruits and vegetables.

[0019] 3. The present invention includes a shell, a semiconductor refrigeration component, a plurality of insulation cavities, a delivery buffer channel, a rechargeable battery component and a digital display temperature control system, so as to expand the volume of the picking box. By utilizing the separation treatment of the insulation cavity, a single insulation cavity independently cools and dissipates heat, which can reduce the uneven temperature distribution caused by the increase in the volume of the insulation cavity; it can ensure that the temperature of fruits and vegetables is reduced as soon as possible during the picking process, inhibit the breathing of fruits and vegetables, thereby improving the picking quality of fruits and vegetables, and realizing the seamless connection of fruits and vegetables from the field to the cold chain vehicle or cold storage.

[0020] 4. The present invention places the semiconductor refrigeration sheet at the upper end of the heat preservation cavity through the semiconductor refrigeration sheet, the cold end radiator and the hot end radiator, which is beneficial to the natural descent of cold air, helps to accelerate the temperature balance in the picking box, and reduces the energy consumption of the fan in the box to a certain extent. This design can also prevent fruits and vegetables from direct contact with the semiconductor refrigeration end to avoid frostbite of fruits and vegetables.

[0021] 5. The present invention forms a heat dissipation channel through the outer shell, the heat-insulating cavity and the delivery buffer channel, so that the fruits and vegetables can remove part of the field heat before entering the heat-insulating cavity, thereby achieving a cooling effect; the buffer cavity and the plurality of buffer cover sheets also have some functions of the cover, which can reduce the loss of cold air and play a role in energy saving.

[0022] 6. The present invention adopts the design of detachable delivery buffer components, so that one picking box can be equipped with several buffer channel components of different models, which can be suitable for picking fruits of different sizes and hardness, and has the function of one box for multiple uses. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of an intelligent self-propelled fruit and vegetable refrigeration picking box of the present invention;

[0024] Figure 2 It is a top view of an intelligent self-propelled fruit and vegetable refrigeration picking box of the present invention;

[0025] Figure 3 It is a cross-sectional view of a refrigeration buffer box of an intelligent self-propelled fruit and vegetable refrigeration picking box of the present invention;

[0026] Figure 4 It is a bottom view of a buffer strip of a first setting mode of an intelligent self-propelled fruit and vegetable refrigeration picking box of the present invention;

[0027] Figure 5 It is a bottom view of the buffer strip of the second setting mode of the intelligent self-propelled fruit and vegetable refrigeration picking box of the present invention;

[0028] Figure 6 This is a schematic diagram of the electrical components connection of an intelligent self-propelled fruit and vegetable refrigeration picking box of the present invention;

[0029] The markings of the components in the attached drawings are as follows: 1. Refrigeration buffer box; 11. Semiconductor refrigeration assembly; 111. Hot end radiator; 112. Semiconductor refrigeration sheet; 113. Cold end radiator; 114. Cooling exhaust fan; 115. Cold air fan; 12. Delivery buffer channel; 121. Buffer cavity; 122. Insulation cover; 123. Buffer cover; 124. Buffer strip; 125. Crossbeam; 126. Fruit and vegetable inlet; 127. Fruit and vegetable buffer channel; 13. Digital display temperature control system; 131. Display controller; 13 2. Temperature sensor; 141. Porous partition; 142. Soft insulation layer; 143. Insulation cavity; 144. Shell; 145. First ventilation hole; 146. Knob switch; 147. Second ventilation hole; 148. Box door; 2. Control box; 21. Controller; 22. Travel power supply; 23. Camera; 3. Travel assembly; 31. Thigh; 32. Calf; 33. Foot; 34. First servo; 35. Second servo; 36. Third servo; 37. Motor; 4. Rechargeable battery assembly. DETAILED DESCRIPTION

[0030] The purpose of the present invention is further described in detail below with reference to the accompanying drawings and specific examples. The examples cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following examples.

[0031] Embodiment 1

[0032] like Figure 1As shown, an intelligent self-propelled refrigerated fruit and vegetable picking box includes a refrigeration buffer box body 1, a control box 2 and a walking component 3, the walking component 3 includes a thigh 31, a calf 32 and a foot 33, the control box includes a controller 21 and a walking power supply 22, the refrigeration buffer box body 1 is installed on the top of the control box 2, the bottom of the control box 2 is hinged to the upper joint of the thigh 31 through the fixed axis of the first steering gear 34, the lower joint of the thigh 31 is hinged to the upper joint of the calf 32 through the rotating axis of the second steering gear 35, the lower joint of the calf 32 is hinged to the foot 33 through the rotating axis of the third steering gear 36, the walking power supply 22 and the controller 21 are installed in the control box 2, and the steering gears (including the first steering gear 34, the second steering gear 35 and the third steering gear 36) and the walking power supply 22 are all connected to the controller 21. The foot 33 includes a foot cover, a foot base, a driving wheel and a motor 37. The top of the foot cover is connected to the lower joint of the calf 32 through the third steering gear 36, the bottom of the foot cover is connected to the foot base, the motor 37 and the gyro stabilizer are both installed on the foot base, the rotating shaft of the motor 37 is connected to the driving wheel, the motor 37 is connected to the controller 21, and the gyro stabilizer is connected to the walking power supply 22. A camera 23 is installed in front of the refrigeration buffer box 1, and the camera 23 is connected to the controller 21.

[0033] The refrigeration buffer box 1 is used to cool the fruits and vegetables and prevent them from being damaged by collision during the delivery process; the control box 2 is used to install the controller 21 and the walking power supply, which plays a supporting role; the controller 21 can receive action instructions issued by a computer or mobile phone operating platform. The controller 21 is an ARM controller, which can control the operation of the steering gear according to the set walking program, and then control the movement of the leg joints; the walking power supply 22 is made of rechargeable batteries, which supplies power to the first steering gear 34, the second steering gear 35, the third steering gear 36, the motor 37, the camera 23, the gyro stabilizer and the controller 21 of the walking component 3; the first steering gear 34, the second steering gear 35, the third steering gear and the motor 37 execute the instructions of the controller 21 to form the walking action of the picking box. The thigh, calf and foot are all made of aluminum alloy, which play a supporting role for the picking box. The foot cover is used to protect the motor and the gyro stabilizer; the foot base is used to install the gyro stabilizer, the motor 37 and the driving wheel; the driving wheel is powered by the motor 37, and the picking box is moved forward or backward through friction through contact with the ground; the gyro stabilizer can enable the device to maintain its center of gravity while walking; the camera 23 monitors the surrounding environment and transmits the detection signal to the controller 21, so that the walking component 3 can play an obstacle avoidance role.

[0034] like Figure 2-3As shown, the refrigeration buffer box 1 includes a rechargeable battery assembly 4, a shell 144, three insulation cavities 143, six semiconductor refrigeration assemblies 11, three delivery buffer channels 12 and three digital display temperature control systems 13. The three insulation cavities 143 are all installed in the inner cavity of the shell 144, the rechargeable battery assembly 4 is installed between the insulation cavity 143 and the shell 144, the top of the insulation cavity 143 is provided with two mounting holes, the semiconductor refrigeration assembly 11 is installed to the mounting holes, the delivery buffer channel 12 is located between the two mounting holes, the delivery buffer channel 122 is connected to the shell 144 and extends into the inner cavity of the insulation cavity 143, the three digital display temperature control systems 13 are installed behind the insulation cavity 143, the two semiconductor refrigeration assemblies 11 of each insulation cavity 143 are connected to the digital display temperature control system 13 on each insulation cavity 143, and the three digital display temperature control systems 13 are all connected to the rechargeable battery assembly 4. The heat preservation cavity 143 is made of a hard polyurethane heat preservation board with a thickness of 4-10 cm; the inner wall of the heat preservation cavity 143 is installed with a soft heat preservation layer 142 made of rubber, and the inner cavity at the upper part of the heat preservation cavity 143 is installed with a porous partition 141. The bottom of the shell 144 is installed with a box door 148, one end of the box door 148 is hinged to the shell 144, and the other end of the box door 148 is connected to the shell 144 through a rotary knob switch 146. The function of the box door and the rotary knob switch 146 is to facilitate the pouring of fruits and vegetables. The outer shell 144 is used to protect the internal structure of the box and plays a protective role; the insulation cavity 143 is used to provide a cooling effect and reduce energy loss; the semiconductor refrigeration component 11 is used to cool the fruits and vegetables to achieve the effect of keeping them fresh; the delivery buffer channel 12 is used to reduce the collision damage of the fruits and vegetables when they are delivered; the digital display temperature control system 13 is used to monitor the temperature inside the insulation cavity 143 and control the refrigeration effect of the semiconductor refrigeration sheet 112; the porous partition 141 is used to separate the fruits and vegetables from the semiconductor refrigeration component 11 to prevent the fruits and vegetables from being collided with each other by the semiconductor refrigeration components 11.

[0035] Each semiconductor refrigeration assembly 11 includes a semiconductor refrigeration sheet 112, a cold end radiator 113, a cold air fan 115 and a hot end radiator 111. The semiconductor refrigeration sheet 112 is installed in the installation hole. The hot end radiator 111 is connected to the hot end surface of the semiconductor refrigeration sheet 112 through thermal conductive silicone grease and epoxy resin glue. The cold end radiator 113 is connected to the cold end surface of the semiconductor refrigeration sheet 112 through thermal conductive silicone grease and epoxy resin glue. The semiconductor refrigeration sheet 112 is connected to the digital display temperature control system 13. The cold air fan 115 is installed on one side of the cold end radiator 113, and the cold air fan 115 is connected to the rechargeable battery assembly 4. The cold air fan 115 mainly serves to supply air to the cold end radiator 113 sideways. The contact surface between the cold end radiator 113 and the semiconductor cooling sheet 112 or the hot end radiator 111 and the semiconductor cooling sheet 112 is made of 0.2-2mm thick thermal grease and epoxy resin glue. The thermal grease is evenly applied to the semiconductor cooling sheet 112 to conduct heat. The epoxy resin glue is located on the periphery with a width of about 2-5mm, which plays the role of bonding and sealing the thermal grease. The hot end radiator 111 and the cold end radiator 113 are both aluminum plates with multiple secondary heat dissipation fins. The semiconductor cooling sheet 112 is used to cool the environment in the insulation cavity 143; the two cold end radiators 113 improve the cooling effect of the semiconductor cooling sheet; the cold air fan 115 is used to supply air to the cold end radiator 113 to allow air convection inside the insulation cavity 143; the hot end radiator 111 improves the heat dissipation effect of the semiconductor cooling sheet.

[0036] The delivery buffer channel 12 includes a buffer cavity 121, an insulation cover 122, 6 buffer cover sheets 123, a cross beam 125 and a buffer strip 124. The buffer cavity 121 is installed on the outer shell 144 through the insulation cover 122 and extends to the inner cavity of the insulation cavity 143. The 6 buffer cover sheets 123 are fixedly installed on the inner wall of the buffer cavity 121. The 6 buffer cover sheets 123 are arranged in a staggered manner with gaps to form a three-layer zigzag buffer cover layer. The four cross beams 125 are crossed at the center, and a fruit and vegetable entrance 126 is formed between two adjacent cross beams 125. Both ends of the four cross beams 125 are connected to the inner wall of the buffer cavity 121, the upper end of a part of the buffer strip 124 is connected to the bottom of the cross beam 125, and the outer side of the other part of the buffer strip 124 is connected to the inner wall of the buffer cavity 121 and is located below the cross beam 125. A fruit and vegetable buffer channel 127 is formed between the buffer strips 124.

[0037] The delivery buffer channel 12 is detachably installed, and different delivery buffer channels 12 can be replaced according to the type of fruit to be picked. The insulation cover 122 is composed of a cover composed of two insulation sheets that can be opened and closed horizontally. The buffer cavity 121 provides support for the buffer cover sheet 123 and the buffer strip 124 to form a channel; the main function of the insulation cover 122 is to reduce the air convection between the external environment and the insulation cavity 143, and play a role in heat preservation; the buffer cover sheet 123 plays a role in heat preservation and plays a role in buffering fruits and vegetables during the delivery process; the buffer strip 124 provides a buffering effect for fruits and vegetables during the falling process, and better plays a role in reducing the collision of fruits and vegetables. The number of beams 125 can be increased or decreased according to the size of the fruits and vegetables to adjust the size of the fruit and vegetable entrance 126; the size of the fruit and vegetable buffer channel 127 can be changed by increasing or reducing the buffer strip 124.

[0038] The outer shell 144, the heat preservation cavity 143 and the delivery buffer channel 12 form a heat dissipation channel. Each refrigeration buffer box 1 is provided with two heat dissipation channels, which are respectively in front and behind the delivery buffer channel 12. The inner net width of the heat dissipation duct is 0.5-3 cm larger than the width of the hot end radiator 111, and the height of the heat dissipation duct is 0.5-2 cm higher than the height of the hot end radiator 111. A plurality of first ventilation holes 145 are provided on the top of the heat dissipation channel, a plurality of second ventilation holes 147 are provided on the side of the heat dissipation channel close to the delivery buffer channel 12, and two heat dissipation exhaust fans 114 are provided on the other side of the heat dissipation channel. The heat dissipation exhaust fans 114 are connected to the rechargeable battery assembly 4, and perform efficient independent exhaust-type heat dissipation on the semiconductor refrigeration plate 112 and the hot end radiator 111 respectively. The first ventilation hole 145 is conducive to improving the heat dissipation efficiency, thereby improving the refrigeration efficiency; the second ventilation hole 147 is used to dissipate heat to the inner cavity of the buffer cavity.

[0039] The digital display temperature control system 13 includes a display controller 131 and a temperature sensor 132. The display controller 131 is installed on the side of the housing 144 and the temperature display screen is built into the heat preservation cavity 143. The temperature sensor 132 is suspended below the porous partition 141 and is absolutely protected by the metal sleeve. The metal sleeve is attached with a soft and breathable polystyrene film. The display controller 131 is connected to the rechargeable battery assembly 4, the temperature sensor 132 is connected to the display controller 131, and the display controller 131 is connected to 6 semiconductor cooling sheets 112. The temperature inside the heat preservation cavity 143 is controlled between -2 and 18°C. The display controller 131 consists of a display screen and an ARM display. Its main function is to monitor the real-time temperature in the current heat preservation cavity 143 and control the cooling of the semiconductor cooling sheet 112; the main function of the temperature sensor 132 is to collect the ambient temperature in the heat preservation cavity 143.

[0040] The outer dimensions of the designed refrigeration buffer box 1 are: length × width × height = 117 × 54 × 50cm; the rechargeable battery is 12V 180Ah, and the continuous working time is 5h; the power of each semiconductor cooling sheet 112 is 60W; the size of the radiator is 12×15×5cm; the size of the corresponding heat dissipation channel is 13×17×6cm; the heat dissipation exhaust fan 114 is 12V 9W, and the model of the internal cold air fan 115 is 12V 3W. The size and number of the first ventilation hole 145 and the second ventilation hole 147 of each independent unit are 4.8mm, 21. The three insulation cavities 143 use the same principle for independent cooling and heat dissipation, and the rechargeable battery assembly 4 is used to uniformly power the semiconductor refrigeration assembly 11 therein, so that the cold energy generated by the semiconductor cooling sheet 112 can circulate in the entire insulation cavity 143 through the radiator (including the cold end radiator 113 and the hot end radiator 111) and the cold air fan 115. The temperature in the heat preservation cavity 143 is controlled by the digital display temperature control system 13, and is generally maintained in the range of 0-4°C. The refrigeration efficiency of the unloaded box is to reach 2°C within 20 minutes of unloaded operation. This embodiment is suitable for the large-scale harvesting of delicate and high-value-added fruits such as wolfberry, raspberry, and blueberry in the field.

[0041] Embodiment 2

[0042] In this embodiment, except for the following technical features, other technical features are the same as those of the first embodiment:

[0043] In this embodiment, the buffer cover sheet 123 and the inner wall of the buffer cavity 121 are connected by a spiral detachable installation instead of a fixed connection.

[0044] The structure of the cross beam 125 in this embodiment adopts five cross beams 125 arranged in sequence and connected to the inner wall of the buffer cavity 121 at both ends instead of four cross beams 125 crossing at the center and connected to the buffer cavity 121 at both ends.

[0045] In this embodiment, the number of the heat dissipation fans 114 is 10 instead of 2.

[0046] The power of the semiconductor cooling plate 112 in this embodiment is 10W instead of 60W.

[0047] The rechargeable battery in this embodiment uses 12V 230Ah instead of 12V 180Ah.

[0048] The temperature inside the heat preservation cavity 143 is controlled by 0~10℃ instead of -2~18℃.

[0049] Embodiment 3

[0050] In this embodiment, except for the following technical features, other technical features are the same as those of the first embodiment:

[0051] In this embodiment, the buffer cover 123 and the inner wall of the buffer cavity 121 are connected by detachable mounting through a slot instead of fixed connection.

[0052] The power of the semiconductor cooling plate 112 in this embodiment is 120W instead of 60W.

[0053] The rechargeable battery in this embodiment uses 12V 50Ah instead of 12V 180Ah.

[0054] The above specific implementation modes are preferred embodiments of the present invention and cannot be used to limit the present invention. Any other changes or other equivalent replacement methods that do not deviate from the technical solution of the present invention are included in the protection scope of the present invention.

Claims

1. An intelligent self-propelled refrigerated fruit and vegetable picking box, characterized in that: It includes a refrigeration buffer box, a control box, and a walking assembly, wherein the walking assembly includes a thigh, a calf, and a foot, the refrigeration buffer box is installed on the top of the control box, the bottom of the control box is connected to the upper joint of the thigh through a first steering gear, the lower joint of the thigh is connected to the upper joint of the calf through a second steering gear, the lower joint of the calf is connected to the foot through a third steering gear, and the first steering gear, the second steering gear, and the third steering gear are all connected to the control box; The refrigeration buffer box comprises an outer shell, a semiconductor refrigeration component, a delivery buffer channel, a rechargeable battery component and a digital display temperature control system. The inner cavity of the outer shell is provided with a plurality of heat preservation cavities. The rechargeable battery component is installed on the outer shell. The heat preservation cavity is provided with a mounting hole. The semiconductor refrigeration component is installed in the mounting hole. The digital display temperature control system is installed in the heat preservation cavity. The semiconductor refrigeration component is connected to the digital display temperature control system. The digital display temperature control system and the semiconductor refrigeration component are both connected to the rechargeable battery component. The foot comprises a foot cover, a foot base, a driving wheel and a motor, the top of the foot cover is connected to the lower joint of the calf through a third steering gear, the bottom of the foot cover is connected to the foot base, the motor is installed on the foot base, the rotating shaft of the motor is connected to the driving wheel, and the motor is connected to a control box; The delivery buffer channel includes a buffer cavity, an insulation cover, a buffer cover sheet, a cross beam and a buffer strip. The buffer cavity is installed on the outer shell through the insulation cover and extends to the inner cavity of the insulation cavity. The buffer cover sheet is installed on the inner wall of the buffer cavity. The buffer cover sheets are arranged with gaps and staggered to form a zigzag buffer cover layer. The cross beams are crossed at the center, and a fruit and vegetable entrance is formed between two adjacent cross beams. Both ends of the cross beams are connected to the inner wall of the buffer cavity, the upper end of a part of the buffer strip is connected to the bottom of the cross beam, and the outer side of the other part of the buffer strip is connected to the inner wall of the buffer cavity and is located below the cross beam. A fruit and vegetable buffer channel is formed between the buffer strips.

2. The intelligent self-propelled refrigerated fruit and vegetable picking box according to claim 1, characterized in that: The walking component also includes a gyro stabilizer, which is installed on the foot and connected to the control box.

3. The intelligent self-propelled refrigerated fruit and vegetable picking box according to claim 1, characterized in that: The control box comprises a travel power supply and a controller, the travel power supply is connected to the controller, and the first steering gear, the second steering gear and the third steering gear are all connected to the controller.

4. The intelligent self-propelled refrigerated fruit and vegetable picking box according to claim 1, characterized in that: The refrigeration buffer box is provided with a camera, and the camera is connected to the control box.

5. The intelligent self-propelled refrigerated fruit and vegetable picking box according to claim 1, characterized in that: The semiconductor refrigeration component includes a semiconductor refrigeration sheet, a cold end radiator and a hot end radiator. The semiconductor refrigeration sheet is installed in the installation hole. The top of the semiconductor refrigeration sheet is connected to the hot end radiator, the bottom of the semiconductor refrigeration sheet is connected to the cold end radiator, and the semiconductor refrigeration sheet is connected to a digital display temperature control system.

6. The intelligent self-propelled refrigerated fruit and vegetable picking box according to claim 5, characterized in that: The semiconductor refrigeration assembly also includes a cold air fan, which is installed on the side of the cold end radiator and is connected to the rechargeable battery assembly.

7. The intelligent self-propelled refrigerated fruit and vegetable picking box according to claim 1, characterized in that: The shell, the heat preservation cavity and the delivery buffer channel constitute a heat dissipation channel, a plurality of first ventilation holes are arranged on the top of the heat dissipation channel, the heat dissipation channel is connected with the delivery buffer channel through the second ventilation holes, a heat dissipation exhaust fan is arranged on the side of the heat dissipation channel away from the delivery buffer channel, and the heat dissipation exhaust fan is connected to the rechargeable battery assembly.

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