An electrified multifunctional cargo transfer vehicle

Abstract

The present invention discloses an electrified multifunctional cargo transfer vehicle, comprising a vehicle frame and a first storage plate, a storage cavity, a second storage plate, and a control cavity arranged in the vehicle frame, and four universal wheels are rotatably arranged around the lower wall of the vehicle frame, an electrical controller is fixed at the lower wall of the vehicle frame, and control connecting strips are connected between the electrical controller and the four universal wheels, a battery box is installed in the control cavity, and the battery box and the electrical controller are electrically connected, a protective shell is provided at the battery box, and a low-battery response mechanism and an active ventilation mechanism are provided at the upper wall of the protective shell; the low-battery response mechanism comprises a temperature sensing piece arranged at the upper wall inside the protective shell. The present invention relates to the technical field of electrified products; the electrified multifunctional cargo transfer vehicle realizes that when the battery is low, by monitoring the heat generated by the battery and distinguishing it from the heat of normal operation, it can remind the staff to replace the battery box in time.

Description

Technical Field

[0001] The invention relates to the technical field of electrified products, in particular to an electrified multifunctional cargo transfer vehicle. Background Art

[0002] Electrification refers to the technology or equipment that uses electricity as a power source or drive method. In the field of logistics and production, electrification usually refers to the use of electric-driven equipment or tools to replace traditional human or fuel-driven methods to improve efficiency, reduce costs and achieve automation. The application of electrification in the field of cargo transfer includes electric forklifts, electric stackers, electric conveyor belts and electrified multi-functional cargo transfer carts, etc. These devices achieve higher transportation efficiency, precise control and more environmentally friendly operation through electric drive systems; the electrified multi-functional cargo transfer cart is a multi-purpose cargo transportation equipment that uses electricity to drive. It is usually used in factories, warehouses, logistics centers and other places to improve cargo handling efficiency and reduce labor costs. The electrified multi-functional cargo transfer cart has a wide range of applications in modern logistics and production fields, which can improve operating efficiency, reduce labor costs, and improve the accuracy and safety of cargo transfer.

[0003] The electric multifunctional cargo transfer vehicle is a multi-purpose cargo transportation equipment driven by electricity. It is usually used in factories, warehouses, logistics centers and other places to improve cargo handling efficiency and reduce labor costs. The electric multifunctional cargo transfer vehicle has a wide range of applications in modern logistics and production fields. It can improve operational efficiency, reduce labor costs, and improve the accuracy and safety of cargo transfer.

[0004] To this end, the present invention provides an electrified multifunctional cargo transfer vehicle to solve the above-mentioned problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an electrified multifunctional cargo transfer vehicle to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an electric multifunctional cargo transfer vehicle, comprising a frame and a first storage plate, a storage cavity, a second storage plate, and a control cavity arranged in the frame, and four universal wheels are rotatably arranged around the lower wall of the frame, an electrical controller is fixed to the lower wall of the frame, and control connecting strips are connected between the electrical controller and the four universal wheels, a battery box is installed in the control cavity, and the battery box and the electrical controller are electrically connected, a protective shell is provided at the battery box, and a low-battery response mechanism and an active ventilation mechanism are provided at the upper wall of the protective shell; the low-battery response mechanism comprises a temperature sensing piece arranged at the upper wall inside the protective shell, one end of the temperature sensing piece passes through the upper wall of the protective shell, and the temperature sensing piece passes through the upper wall of the protective shell. A temperature sensing cavity is fixed on the outer wall of the upper end of the protective shell, one end of the temperature sensing piece passes through the upper wall of the protective shell and is arranged in the temperature sensing cavity, a through hole is provided at the end of the temperature sensing cavity away from the temperature sensing piece, a thermal expansion component is provided in the temperature sensing cavity, and a dynamic power connection component is provided at the through hole, and the thermal expansion component and the dynamic power connection component work in cooperation with each other; an active ventilation mechanism comprises vents arranged at the front and rear side walls of the protective shell, an inner wall of the protective shell is provided with a sliding cavity interconnected with each other, a flexible connecting piece is slidably provided in the sliding cavity, a first protective soft board and a second protective soft board are respectively slid in the two vents, the first protective soft board and the second protective soft board are respectively connected to the two ends of the flexible connecting piece, and the flexible connecting piece and the through hole are connected to each other through an active component.

[0007] Preferably, the first storage plate, the storage cavity, the second storage plate, and the control cavity are respectively arranged from top to bottom in the frame, and a plurality of partitions are arranged in the storage cavity.

[0008] Preferably: the thermal expansion component includes an expansion chamber and a movable chamber arranged in the temperature sensing chamber, the expansion chamber is provided with hydrogen for thermal expansion, the expansion chamber is arranged at one end close to the temperature sensing piece, a sliding plate slides between the expansion chamber and the movable chamber, and a push rod is fixed to the side wall of the sliding plate.

[0009] Preferably: rotating plates are rotatably provided at both side walls of the movable cavity, a torsion spring is provided between the movable cavity and the rotating plates, and the distance between the two rotating plates is greater than the width of the ejector rod.

[0010] Preferably, two clamping blocks are fixedly provided on the inner side wall of the expansion chamber, and the clamping blocks and the sliding plate are correspondingly clamped to each other.

[0011] Preferably: the dynamic power connection component includes an indicator light arranged on the side wall of the frame, a resistor bar is fixedly provided on the upper wall of the protective shell, the resistor bar is arranged outside the through hole, the positive and negative poles of the indicator light are electrically connected to two conductive bars respectively, one of which is electrically connected to one end of the resistor bar, a connecting piece is fixed to the end side wall of the other conductive bar, a sliding ring is slidably provided at the other end of the resistor bar, a connecting wire is electrically connected between the sliding ring and the connecting piece, a stop block is fixed to the outer wall of the upper end of the sliding ring, and the stop block and the through hole are arranged correspondingly.

[0012] Preferably: the movable component includes a pushing bar arranged at the through hole, and limit springs are fixed between the two ends of the pushing bar and the outer wall of the temperature sensing chamber, two fixed blocks are fixedly provided on the upper wall of the protective shell, a rotating rod is rotatably provided between the two fixed blocks, the middle connection of the flexible connecting piece is wrapped around the rotating rod, and a fixed bar is fixedly connected between the pushing bar and the rotating rod.

[0013] Preferably: a counterweight bar is fixed to the lower wall of the first protective soft plate and the second protective soft plate.

[0014] Preferably, a power supply is fixedly provided on the side wall of the frame, the power supply is arranged on the back of the indicator light, and the power supply, the indicator light and the resistance bar are connected in series to form a closed loop.

[0015] Beneficial Effects

[0016] The present invention provides an electrified multifunctional cargo transfer vehicle. Compared with the prior art, it has the following beneficial effects:

[0017] (1) As the battery power of the electrified multifunctional cargo transfer vehicle decreases, the heat released by the vehicle further increases, causing the brightness of the indicator light to gradually brighten, thereby promptly reminding the staff to replace the battery box in advance to ensure the continuity of the vehicle's cargo transportation and prevent the vehicle from stopping during transportation. Compared with the use of battery power monitoring equipment and sensors, the device does not require excessive battery power consumption, thus increasing the vehicle's operating time and saving the vehicle's production cost. The maintenance and repair of the vehicle are more convenient and cheaper.

[0018] (2) When the battery power of the electrified multifunctional cargo transfer trolley is low, after the push rod extends out of the through hole, it can push the push bar to move. Through the connection of the fixed bar, the upper end of the flexible connecting sheet can be driven to transmit on the fixed block, thereby pulling the first protective soft plate and the second protective soft plate to move upward, so that the vent can be opened in the moving direction of the trolley, and the heat in the battery box can be discharged in time, so as to prevent the working temperature of the battery box from being too high, thereby causing safety accidents and damage to the trolley.

[0019] (3) The electric multifunctional cargo transfer trolley can adjust the stiffness coefficient of the limit spring and the weight of the counterweight bar to achieve that when the brightness of the indicator light reaches a certain level (that is, when the staff clearly knows that the battery box needs to be replaced), the first protective soft board and the second protective soft board will be pulled away from the vent to reduce the temperature in the battery box, thereby preventing premature ventilation and heat dissipation from causing heat loss in the temperature sensing chamber and affecting the normal operation of the low-battery reaction mechanism. It also prevents the first protective soft board and the second protective soft board from being opened too easily, allowing external dust and other debris to enter the battery box. In this way, it not only realizes the reminder of low battery power, but also realizes ventilation at the battery box, and prevents external dust and other debris from entering the battery box, making it difficult for heat to be dissipated. Dust can gather heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an electrified multifunctional cargo transfer vehicle proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of an electric multifunctional cargo transfer vehicle proposed by the present invention from another angle;

[0022] Figure 3 This is a schematic diagram of the internal structure of a protective shell in an electric multifunctional cargo transfer vehicle proposed by the present invention;

[0023] Figure 4 It is a schematic diagram of the upper surface structure of a protective shell in an electric multifunctional cargo transfer vehicle proposed by the present invention;

[0024] Figure 5 It is a schematic diagram of the internal structure of a temperature sensing chamber in an electric multifunctional cargo transfer vehicle proposed by the present invention;

[0025] Figure 6 yes Figure 5 The structural diagram at A in the middle;

[0026] Figure 7 It is a partial cross-sectional view of the upper wall of the protective shell of an electric multifunctional cargo transfer vehicle proposed by the present invention;

[0027] Figure 8 The present invention provides a schematic structural diagram of the lower wall of a temperature sensing chamber in an electric multifunctional cargo transfer vehicle.

[0028] In the figure, 1 is a frame; 2. a first storage plate; 3. a storage cavity; 4. a second storage plate; 5. a control cavity; 6. a universal wheel; 7. an electrical controller; 8. a control connecting strip; 9. a protective shell; 10. an indicator light; 11. a battery box; 12. a temperature sensing sheet; 13. a first protective soft board; 14. a temperature sensing cavity; 15. a conductive strip; 16. a second protective soft board; 17. a counterweight strip; 18. an expansion cavity; 19. a moving cavity; 20. a sliding plate; 21. a block; 22. a push rod; 23. a rotating plate; 24. a torsion spring; 25. a resistor strip; 26. a through hole; 27. a stop block; 28. a sliding ring; 29. ​​a connecting sheet; 30. a connecting wire; 31. a pushing strip; 32. a fixing strip; 33. a sliding cavity; 34. a flexible connecting sheet; 35. a fixing block; 36. a rotating rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figure 1-8 An electric multifunctional cargo transfer vehicle comprises a frame 1 and a first storage plate 2, a storage cavity 3, a second storage plate 4, and a control cavity 5 arranged in the frame 1, and four universal wheels 6 are rotatably arranged around the lower wall of the frame 1, an electrical controller 7 is fixed at the lower wall of the frame 1, and a control connecting strip 8 is connected between the electrical controller 7 and the four universal wheels 6, a battery box 11 is installed in the control cavity 5, and the battery box 11 and the electrical controller 7 are electrically connected, and a protective shell 9 is provided at the battery box 11, and a low-battery reaction mechanism and an active ventilation mechanism are provided at the upper wall of the protective shell 9;

[0032] The low-power reaction mechanism includes a temperature sensing piece 12 arranged at the upper wall inside the protective shell 9, one end of the temperature sensing piece 12 penetrates the upper wall of the protective shell 9, a temperature sensing cavity 14 is fixed at the upper outer wall of the protective shell 9, one end of the temperature sensing piece 12 penetrates the upper wall of the protective shell 9 and is arranged in the temperature sensing cavity 14, a through hole 26 is provided at one end of the temperature sensing cavity 14 away from the temperature sensing piece 12, a thermal expansion component is provided in the temperature sensing cavity 14, and a dynamic power connection component is provided at the through hole 26, and the thermal expansion component and the dynamic power connection component work in cooperation with each other;

[0033] The active ventilation mechanism includes ventilation holes arranged at the front and rear side walls of the protective shell 9, the inner wall of the protective shell 9 is provided with a sliding cavity 33 that is interconnected, a flexible connecting piece 34 is slidably arranged in the sliding cavity 33, a first protective soft board 13 and a second protective soft board 16 are respectively slidably arranged in the two ventilation holes, the first protective soft board 13 and the second protective soft board 16 are respectively connected to the two ends of the flexible connecting piece 34, and the flexible connecting piece 34 and the through hole 26 are connected to each other through an active component;

[0034] When the battery is low on power, the battery will have a certain internal resistance when working. When the battery is low on power, in order to maintain the normal operation of the device, the battery will release more energy, which will cause a certain amount of heat to be generated inside the battery. This part of the heat further expands the hydrogen in the expansion chamber 18, pushing the sliding plate 20 to continue moving until the sliding plate 20 contacts the rotating plate 23, overcoming the elastic force of the light torsion spring 24 to push the rotating plate 23 to rotate, and at the same time, the push rod 22 extends from the through hole 26, pushing the sliding ring 28 to move on the resistor bar 25, thereby making the resistor connected to the circuit of the indicator light 10 Becomes smaller, thereby making the brightness of the indicator light 10 brighter. As the battery power decreases, the heat released further increases. Through the above process, the brightness of the indicator light 10 also gradually becomes brighter, so as to promptly remind the staff to replace the battery box 11 in advance to ensure the continuity of the trolley in transporting goods and prevent the trolley from stopping during transportation. Compared with the use of battery power monitoring equipment and sensors and other structures, the device does not need to consume too much battery power, increases the operating time of the trolley, and saves the production cost of the trolley, and is more convenient and cheap to maintain and repair the trolley.

[0035] Embodiment 2:

[0036] See also Figure 4-8 This embodiment provides a technical solution based on the first embodiment: the first storage plate 2, the storage cavity 3, the second storage plate 4, and the control cavity 5 are respectively arranged from top to bottom in the frame 1, and a plurality of partitions are arranged in the storage cavity 3.

[0037] It should be noted that the first storage plate 2, the storage cavity 3, and the second storage plate 4 can all store the items required for transfer. At the same time, the partitions arranged in the storage cavity 3 can allow for the storage of some items that need to be protected from shaking, and the lower wall of the storage cavity 3 is inclined to prevent the items in the storage cavity 3 from shaking and scattering when the trolley moves.

[0038] In an optional embodiment: the thermal expansion component includes an expansion chamber 18 and a movable chamber 19 arranged in the temperature sensing chamber 14, hydrogen is provided in the expansion chamber 18 for thermal expansion, the expansion chamber 18 is arranged at one end close to the temperature sensing piece 12, a sliding plate 20 slides between the expansion chamber 18 and the movable chamber 19, and a push rod 22 is fixed to the side wall of the sliding plate 20.

[0039] It should be noted that the temperature conducted by the temperature-sensitive sheet 12 causes the hydrogen in the expansion chamber 18 to expand, pushing the sliding plate 20 to move between the block 21 and the rotating plate 23 , thereby driving the ejector rod 22 to move to different degrees.

[0040] In an optional embodiment: rotating plates 23 are rotatably provided at both side walls of the movable cavity 19 , a torsion spring 24 is provided between the movable cavity 19 and the rotating plates 23 , and the distance between the two rotating plates 23 is greater than the width of the push rod 22 .

[0041] It should be noted that when the sliding plate 20 moves, the push rod 22 can pass through between the two rotating plates 23 to prevent the push rod 22 from generating a thrust on the rotating plates 23 and affecting the normal operation of the device.

[0042] In an optional embodiment: two clamping blocks 21 are fixedly provided on the inner side wall of the expansion chamber 18 , and the clamping blocks 21 and the sliding plate 20 are correspondingly clamped to each other.

[0043] It should be noted that the distance between the block 21 and the rotating plate 23 can be regarded as the highest temperature and the lowest temperature of the electric vehicle when it is working, which effectively prevents the sliding plate 20 from sliding above the temperature sensing plate 12, making the device unable to work normally.

[0044] In an optional embodiment: the dynamic power connection component includes an indicator light 10 arranged on the side wall of the frame 1, a resistor bar 25 is fixedly provided on the upper wall of the protective shell 9, and the resistor bar 25 is arranged outside the through hole 26. The positive and negative poles of the indicator light 10 are electrically connected to two conductive bars 15 respectively, one of which is electrically connected to one end of the resistor bar 25, and a connecting piece 29 is fixed to the end side wall of the other conductive bar 15. A sliding ring 28 is slidably provided at the other end of the resistor bar 25, and a connecting wire 30 is electrically connected between the sliding ring 28 and the connecting piece 29. A stop block 27 is fixed to the outer wall of the upper end of the sliding ring 28, and the stop block 27 and the through hole 26 are correspondingly arranged.

[0045] It should be noted that the sliding ring 28 can be pushed to move on the resistor bar 25, thereby reducing the resistance of the circuit connected to the indicator light 10, thereby making the brightness of the indicator light 10 brighter as the battery power decreases.

[0046] In an optional embodiment: the movable component includes a push bar 31 arranged at the through hole 26, and limit springs are fixed between the two ends of the push bar 31 and the outer wall of the temperature sensing chamber 14, two fixed blocks 35 are fixedly provided on the upper wall of the protective shell 9, and a rotating rod 36 is rotatably provided between the two fixed blocks 35, the middle connection of the flexible connecting piece 34 is wrapped around the rotating rod 36, and a fixed bar 32 is fixedly connected between the push bar 31 and the rotating rod 36.

[0047] It should be noted that when the push rod 22 extends out of the through hole 26, it can push the push bar 31 to move at the same time. Through the connection of the fixed bar 32, the upper end of the flexible connecting piece 34 can be driven to transmit on the fixed block 35, and then the first protective soft plate 13 and the second protective soft plate 16 are pulled upward, so that the vent can be opened in the moving direction of the trolley, and the heat in the battery box 11 can be discharged in time to prevent the working temperature of the battery box 11 from being too high, thereby causing safety accidents and damage to the trolley.

[0048] In an optional embodiment, a weight bar 17 is fixed to the lower wall of the first protective soft board 13 and the second protective soft board 16 .

[0049] It should be noted that by adjusting the stiffness coefficient of the limit spring and the weight of the counterweight bar 17, it can be achieved that when the brightness of the indicator light 10 reaches a certain level, that is, the staff clearly knows that the battery box 11 needs to be replaced, the first protective soft board 13 and the second protective soft board 16 will be pulled away from the vent to reduce the temperature inside the battery box 11, prevent premature ventilation and heat dissipation from causing heat loss transferred to the temperature sensing cavity 14, affecting the normal operation of the low-battery reaction mechanism, and prevent the first protective soft board 13 and the second protective soft board 16 from being opened too easily.

[0050] In an optional embodiment: a power source is fixedly provided on the side wall of the frame 1, the power source is provided on the back of the indicator light 10, and the power source, the indicator light 10 and the resistor bar 25 are connected in series to form a closed loop.

[0051] It should be noted that by pushing the sliding ring 28 to move on the resistor bar 25 , the resistance of the circuit connected to the indicator light 10 can be reduced, thereby achieving the desired function of the device.

[0052] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0053] When the electric multifunctional cargo transfer vehicle is in operation, the electric controller 7 controls the movement and rotation direction of the universal wheel 6 by controlling the connecting strip 8 under the power supply of the battery box 11, thereby realizing the movement and steering of the vehicle;

[0054] And during the normal operation of the trolley, the transfer trolley is designed with a certain operating temperature range, which includes the maximum temperature limit under normal working conditions achieved by designing and selecting suitable materials, heat dissipation systems, and controlling current (this is an existing well-known technology and will not be repeated). Through a limited number of experiments, we can obtain the maximum operating temperature of the trolley under normal operation, and adjust the position of the rotating plate 23 in the temperature sensing chamber 14 through this data to achieve the following working process and functions: When the trolley is running and the battery is heating normally, the temperature conducted by the temperature sensing piece 12 causes the hydrogen in the expansion chamber 18 to expand, pushing the sliding plate 20 to move between the block 21 and the rotating plate 23. At this time, the push rod 22 can only move to the through hole 26 at most and will not extend outward; when the battery is low in power, since the battery will have a certain internal resistance when working, and when the power is low, in order to maintain the normal operation of the equipment, the battery will release more energy, which will cause a certain amount of heat to be generated inside the battery. The amount of heat further expands the hydrogen in the expansion chamber 18, pushing the sliding plate 20 to continue moving until the sliding plate 20 contacts the rotating plate 23, overcoming the elastic force of the light torsion spring 24 to push the rotating plate 23 to rotate, and at the same time, the push rod 22 extends from the through hole 26 to push the sliding ring 28 to move on the resistance bar 25, thereby reducing the resistance of the circuit connected to the indicator light 10, thereby making the brightness of the indicator light 10 brighter. As the battery power decreases, the heat released further increases. Through the above process, the brightness of the indicator light 10 also gradually brightens, thereby promptly reminding the staff to replace the battery box 11 in advance to ensure the continuity of the trolley in transporting goods and prevent the trolley from stopping during transportation. Compared with the use of battery power monitoring equipment and sensors, the device does not need to consume too much battery power, increases the running time of the trolley, and saves the production cost of the trolley, and is more convenient and cheap for the maintenance and repair of the trolley.

[0055] At the same time, when the battery power of the trolley is low, after the push rod 22 extends out of the through hole 26, the push bar 31 can be pushed to move at the same time. Through the connection of the fixing bar 32, the upper end of the flexible connecting piece 34 can be driven to transmit on the fixing block 35, thereby pulling the first protective soft plate 13 and the second protective soft plate 16 to move upward, so that the vent can be opened in the moving direction of the trolley, and the heat in the battery box 11 can be discharged in time, so as to prevent the working temperature of the battery box 11 from being too high, thereby causing safety accidents and damage to the trolley;

[0056] In the above process, by adjusting the stiffness coefficient of the limit spring and the weight of the counterweight bar 17, it can be achieved that when the brightness of the indicator light 10 reaches a certain level (that is, when the staff clearly knows that the battery box 11 needs to be replaced), the first protective soft board 13 and the second protective soft board 16 will be pulled apart from the vent to reduce the temperature in the battery box 11, thereby preventing premature ventilation and heat dissipation from causing the heat transferred to the temperature sensing chamber 14 to be lost, affecting the normal operation of the low-battery reaction mechanism, and preventing the first protective soft board 13 and the second protective soft board 16 from being opened too easily, allowing external dust and other debris to enter the battery box 11. This not only realizes a reminder of low battery power, but also realizes ventilation at the battery box 11, and prevents external dust and the like from entering the battery box 11, making it difficult for heat to dissipate. Dust can gather heat.

[0057] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0058] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric multifunctional cargo transfer vehicle, comprising a frame (1) and a first storage plate (2), a storage cavity (3), a second storage plate (4), and a control cavity (5) arranged in the frame (1), and four universal wheels (6) are rotatably arranged on the lower wall of the frame (1), characterized in that: An electrical controller (7) is fixed on the lower wall of the vehicle frame (1), a control connection strip (8) is connected between the electrical controller (7) and the four universal wheels (6), a battery box (11) is installed in the control cavity (5), the battery box (11) and the electrical controller (7) are electrically connected, a protective shell (9) is provided on the battery box (11), and a low-battery reaction mechanism and an active ventilation mechanism are provided on the upper wall of the protective shell (9); A low-battery reaction mechanism comprises a temperature sensing piece (12) arranged on the upper wall inside a protective shell (9), one end of the temperature sensing piece (12) penetrates the upper wall of the protective shell (9), a temperature sensing cavity (14) is fixed on the upper outer wall of the protective shell (9), one end of the temperature sensing piece (12) penetrating the upper wall of the protective shell (9) is arranged in the temperature sensing cavity (14), one end of the temperature sensing piece (12) penetrating the upper wall of the protective shell (9) is arranged in the temperature sensing cavity (14), a through hole (26) is provided at one end of the temperature sensing cavity (14) away from the temperature sensing piece (12), a thermal expansion component is provided in the temperature sensing cavity (14), and a dynamic power connection component is provided at the through hole (26), and the thermal expansion component and the dynamic power connection component cooperate with each other; An active ventilation mechanism comprises ventilation holes arranged at the front and rear side walls of a protective shell (9), the inner wall of the protective shell (9) is provided with mutually communicating sliding cavities (33), a flexible connecting piece (34) is slidably arranged in the sliding cavity (33), a first protective soft plate (13) and a second protective soft plate (16) are respectively slidably arranged in the two ventilation holes, the first protective soft plate (13) and the second protective soft plate (16) are respectively connected to the two ends of the flexible connecting piece (34), and the flexible connecting piece (34) and the through hole (26) are connected to each other via an active component; The thermal expansion assembly comprises an expansion chamber (18) and a moving chamber (19) arranged in a temperature sensing chamber (14); hydrogen is arranged in the expansion chamber (18) for thermal expansion; the expansion chamber (18) is arranged at one end close to the temperature sensing piece (12); a sliding plate (20) slides between the expansion chamber (18) and the moving chamber (19); a push rod (22) is fixed to the side wall of the sliding plate (20); The dynamic power connection component comprises an indicator light (10) arranged on the side wall of the vehicle frame (1); a resistor bar (25) is fixedly arranged on the upper wall of the protective shell (9); the resistor bar (25) is arranged outside the through hole (26); the positive and negative electrodes of the indicator light (10) are respectively electrically connected to two conductive bars (15); one conductive bar (15) is electrically connected to one end of the resistor bar (25); a connecting piece (29) is fixed to the end side wall of the other conductive bar (15); a sliding ring (28) is slidably arranged at the other end of the resistor bar (25); a connecting wire (30) is electrically connected between the sliding ring (28) and the connecting piece (29); a stop block (27) is fixed to the outer wall of the upper end of the sliding ring (28); the stop block (27) and the through hole (26) are arranged correspondingly; The movable component comprises a push bar (31) arranged at the through hole (26), and limit springs are fixed between the two ends of the push bar (31) and the outer wall of the temperature sensing chamber (14). Two fixed blocks (35) are fixedly arranged on the upper wall of the protective shell (9), and a rotating rod (36) is rotatably arranged between the two fixed blocks (35). The middle connection of the flexible connecting piece (34) is wound around the rotating rod (36), and a fixed bar (32) is fixedly connected between the push bar (31) and the rotating rod (36).

2. The electric multifunctional cargo transfer vehicle according to claim 1 is characterized in that: The first storage plate (2), the storage cavity (3), the second storage plate (4), and the control cavity (5) are respectively arranged from top to bottom in the frame (1), and a plurality of partitions are arranged in the storage cavity (3).

3. The electric multifunctional cargo transfer vehicle according to claim 1 is characterized in that: Rotating plates (23) are rotatably provided at both side walls of the movable cavity (19), a torsion spring (24) is provided between the movable cavity (19) and the rotating plates (23), and the spacing between the two rotating plates (23) is greater than the width of the push rod (22).

4. The electric multifunctional cargo transfer vehicle according to claim 1 is characterized in that: Two clamping blocks (21) are fixedly provided on the inner side wall of the expansion chamber (18), and the clamping blocks (21) and the sliding plate (20) are correspondingly clamped to each other.

5. The electric multifunctional cargo transfer vehicle according to claim 1 is characterized in that: Counterweight bars (17) are fixed to the lower walls of the first protective soft plate (13) and the second protective soft plate (16).

6. The electric multifunctional cargo transfer vehicle according to claim 1 is characterized in that: A power source is also fixedly provided on the side wall of the vehicle frame (1), and the power source is arranged on the back of the indicator light (10), and the power source, the indicator light (10) and the resistance bar (25) are connected in series to form a closed loop.

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