A small electric remote-controlled flatbed car that is easy to store

Abstract

A small electric remote-controlled flatbed cart that is easy to store, wherein the main body includes an inner layer of the main body and a wheel fixing bracket, the inner layer of the main body is installed on the wheel fixing bracket, the inner layer of the main body is installed with a lithium battery, an integrated electric adjustment board, a main controller and a radio receiver, the outer rings of the wheels are respectively installed at the four corners of the bottom of the wheel fixing bracket, and the outer rings of the wheels are wrapped with a motor; the main controller is connected to the radio receiver, and the handheld transmitter is frequency-connected to the radio receiver; and a spare push-pull rod system is provided on the main body, and a rebound pressure plate and a lateral rebound pressure plate are provided on the spare push-pull rod cross bar of the spare push-pull rod system, and the push-pull rod is quickly stored by utilizing the squeezing force of the spring assembly and the vehicle body, which effectively reduces the jamming phenomenon that is prone to occur in traditional methods, and can also fix the position of the push-pull rod after storage, and expand the actual effective practical area of ​​the flatbed cart, so that the appearance is more neat and beautiful after storage.

Description

Technical Field

[0001] The present invention relates to the technical field of short-distance mechanical transportation equipment, and in particular to a small electric remote-controlled flatbed vehicle that is easy to store. Background Art

[0002] Flatbed trucks are a common means of transporting short-distance goods in daily life. They are simple, practical, flexible and convenient. However, the flatbed trucks currently in use are usually unpowered and must rely on manpower to move. Whether empty or fully loaded, they will consume varying degrees of physical strength from the user. When transporting large goods, especially when passing through narrow sections of road, the goods can easily block the user's line of sight, causing errors in the user's assessment of the safe distance to the surrounding environment. This not only seriously reduces transportation efficiency, but can even cause the goods to overturn and become dangerous. When a single person is transporting goods, if some of the goods are complex or heterogeneous in shape and are not suitable for transportation on a flatbed truck, they must be transported by the user, and the user must also operate the flatbed truck to carry other goods. At this time, not only is the transportation efficiency and quality seriously reduced, but it also places a great physical burden on the user.

[0003] In addition, traditional flatbed carts must rely on users and push-pull rods to move, and the existence of push-pull rods will limit the effective use area of ​​the flatbed cart; at the same time, in terms of the storage of the flatbed cart and its components, the traditional push-pull rod storage method is based on a simple external spring pressing method. It is necessary to press down hard on the middle of the positioning beam. When the spring clips on both sides of the push-pull vertical rods are under force, the push-pull rod can be lowered and placed on the surface of the flatbed cart. With this storage method, the middle of the beam must be pressed to make the springs on both sides be under force at the same time. If the pressing position is biased to the left or right, the spring clip on the other side will not be under force, and the push-pull rod cannot be lowered, which hinders the storage process. Not only is the appearance not neat and beautiful, the push-pull rod cannot be fixed, and the push-pull rod is prone to swinging left and right during the movement of the flatbed cart. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a small electric remote-controlled flatbed vehicle that is easy to store, so as to solve the problems in the above-mentioned background technology.

[0005] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0006] A small electric remote-controlled flatbed vehicle that is easy to store includes a main vehicle body, a handheld transmitter and a spare push-pull rod system, wherein the main vehicle body includes a main vehicle body inner layer and a wheel fixing bracket, the wheel fixing bracket is mounted with the main vehicle body inner layer, the main vehicle body inner layer is mounted with a lithium battery, an integrated electric adjustment board, a main controller and a radio receiver, the wheel outer rings are mounted at the four corners of the bottom of the wheel fixing bracket, and a motor is wrapped in the wheel outer ring; a charging plug and a vehicle body power switch are mounted at the rear end of the main vehicle body, one end of the negative electrode of the charging plug connected in parallel with the negative electrode of the lithium battery is connected to the negative electrode of the integrated electric adjustment board, one end of the vehicle body power switch is connected to the positive electrode of the lithium battery, and the other end of the vehicle body power switch is connected to the positive electrode of the integrated electric adjustment board, a high-voltage power output port of the integrated electric adjustment board is connected to the motor that drives the outer ring of the wheel to rotate, a low-voltage power output port of the integrated electric adjustment board is connected to the main controller, and the main controller is connected to the radio receiver; the handheld transmitter is frequency-linked to the radio receiver;

[0007] The spare push-pull rod system includes a positioning slider, a spare push-pull rod vertical rod, a spare push-pull rod cross rod, a circular positioning boss, a rebound pressure piece and a lateral rebound pressure piece. Grooves for accommodating the spare push-pull rod vertical rod are provided on both sides of the main vehicle body. Positioning sliders are placed in the grooves for positioning the spare push-pull rod vertical rod. The bottom of the spare push-pull rod vertical rod is connected to the positioning slider through a positioning connector, and the top of the spare push-pull rod vertical rod is connected to the spare push-pull rod cross rod, and a circular positioning boss is installed at the connection, which plays a fixing role after the push-pull rod is retracted; the rebound pressure piece is arranged at 1 / 5 of the length of the spare push-pull rod cross rod close to the circular positioning boss, and the lateral rebound pressure piece is installed at the two ends of the spare push-pull rod cross rod, and the circular positioning boss is controlled by the two pressure pieces.

[0008] In the present invention, the vehicle body power switch is an embedded DC rebound switch, and a circular positioning groove is provided at the front end of the main vehicle body. The circular positioning groove is made of stainless steel and serves to fix the spare push-pull rod vertical rod; the groove is made of aluminum alloy and is filled with solid grease.

[0009] In the present invention, the motor is a brushless three-phase AC motor.

[0010] In the present invention, the handheld transmitter is a radio transmitter terminal with a transmission frequency of 2.4GHz. The handheld transmitter includes a handheld body, a control joystick, a transmitter power switch, a buzzer, a transmitter charging port, a flatbed vehicle battery indicator light and a finger placement slot. The top of the handheld body is provided with a control joystick and a flatbed vehicle battery indicator light, one side of the handheld body is provided with a transmitter power switch, a transmitter charging port and a buzzer, and a finger placement slot is provided on the handheld body; the control joystick is omnidirectional and corresponds one-to-one to the movement posture of the main vehicle body, and has an automatic return to center function. When no operation is performed, the control joystick is always in a neutral position, and the top of the control joystick is sharpened to increase the friction between the user's fingers; the transmitter power switch is a push-type switch. When pressed into the handheld body, the circuit is energized, and when pressed again, it rebounds and the circuit is disconnected; the buzzer is a handheld transmitter battery alarm Prompt: when the battery of the handheld transmitter is low, the buzzer will emit a prompt sound to remind the user to charge; the transmitter charging port is ideally designed to use a DC2.1mm jack; the flatbed vehicle battery indicator light is for the handheld transmitter to receive the downlink signal of the radio receiver, and after obtaining the current voltage of the lithium battery, it will prompt through green, yellow, and red respectively, where green indicates that the battery power is between 30% and 100%, yellow indicates that the battery power is between 15% and 30%, and red indicates that the battery power is below 15%; the finger placement groove is where the user's fingers are placed. When in use, put the other fingers except the thumb into the finger placement groove in turn, bend the thumb slightly and place it on the control stick, the edges of the finger placement groove are rounded by chamfering to ensure user comfort; the handheld body is equipped with an omnidirectional antenna, which is connected to the radio receiver within the line of sight.

[0011] In the present invention, the gap between the positioning slider and the groove is no more than 2 mm.

[0012] In the present invention, when the push-pull rod needs to be used, first press the lateral rebound pressure pieces on the left and right sides of the spare push-pull rod cross bar to retract the circular positioning boss into the spare push-pull rod cross bar, and then drag the spare push-pull rod cross bar horizontally outward, and the spare push-pull rod vertical bar moves outward under the positioning of the positioning slider; when the end of the spare push-pull rod vertical bar moves to the circular positioning groove section of the circular positioning groove, the spare push-pull rod cross bar is pulled up in an arc shape with the positioning slider as the center, and then the spare push-pull rod vertical bar is inserted through the circular positioning groove section. After use, pull the spare push-pull rod vertical rod out of the circular positioning groove, and place the spare push-pull rod horizontally in an arc shape with the positioning slider as the center, and push it inward along the groove direction. When it reaches the storage position, the rebound pressure piece on the spare push-pull rod horizontal bar is squeezed by the main vehicle body. At this time, the circular positioning boss on the spare push-pull rod horizontal bar pops out and falls into the circular positioning groove below. At the same time, the lateral rebound pressure piece protrudes outward. At this time, the push-pull rod is fixed and the storage is completed.

[0013] In the present invention, when in use, the power switch of the transmitter must be turned on first, and then the power switch of the vehicle body is turned on. The lithium battery inputs current to the integrated electric adjustment board, and after the integrated electric adjustment board distributes the power, it supplies power to the motor, main controller, and radio receiver respectively; when the radio receiver receives the radio signal given by the handheld transmitter, the electric signal is fed back to the main controller through the signal line, and the main controller controls the alternating current output by the integrated electric adjustment board to each motor; when the output current is the same, the four motors have the same speed, and the flatbed truck starts to move forward or backward; when the output current is larger on the left and smaller on the right, the left motor speed is faster than the right, and the flatbed truck moves to the right; when the output current is smaller on the left and larger on the right, the right motor speed is faster than the left, and the flatbed truck moves to the left; when the output current stops, the motor stops, and the flatbed truck stops moving; after use, turn off the vehicle body power switch first, and then turn off the transmitter power switch.

[0014] Beneficial effects: While ensuring the flexibility, convenience and easy storage of the flatbed cart, the present invention uses a combination of lithium batteries and brushless motors to transform the flatbed cart into an electrically driven one, freeing the user's hands and improving the efficiency of use; the outer rotor brushless motor is more efficient than the inner rotor brushed motor, and the motor is used as a wheel, and the motor shaft is the wheel shaft, without the need for an additional shaft transmission, which reduces energy loss and further improves operating efficiency; at the same time, the speed difference is used to achieve movement, reduce the rotating structure, avoid excessive complexity of the motion system, and reduce the failure rate; the new inward storage push-pull rod method does not require excessive force throughout the storage process, and the structural design is simple, which effectively reduces the jamming phenomenon that is prone to occur in traditional methods, and can also fix the position of the push-pull rod after storage, and expand the actual effective practical area of ​​the flatbed cart. After storage, the appearance is more neat and beautiful, and the most basic appearance characteristics of the car body are maintained. Whether stacked or overlapped, the gap between the stacked objects is greatly optimized, making it easier to store and convenient to store. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of a preferred embodiment of the present invention.

[0016] Figure 2 It is a side view of a preferred embodiment of the present invention.

[0017] Figure 3 It is a top view of a preferred embodiment of the present invention.

[0018] Figure 4 It is a rear view of a preferred embodiment of the present invention.

[0019] Figure 5 Schematic diagram of circuit connection in a preferred embodiment of the present invention.

[0020] Figure 6 FIG. 1 is a structural diagram of a handheld transmitter in a preferred embodiment of the present invention.

[0021] Figure 7 This is a schematic diagram of the connection structure between the push-pull rod and the main vehicle body in a preferred embodiment of the present invention.

[0022] Figure 8 This is a side view of the connection between the push-pull rod and the main vehicle body in a preferred embodiment of the present invention.

[0023] Figure 9 Schematic diagram of the push-pull rod structure in a preferred embodiment of the invention.

[0024] Figure 10 It is a side view of the push-pull rod in a preferred embodiment of the present invention.

[0025] Figure 11 This is a bottom view of the push-pull rod in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0027] See for example Figures 1 to 11The illustrated embodiment shows a small electric remote control flatbed vehicle that is easy to store, comprising a charging plug 1, a vehicle body power switch 2, a power battery 3, a wheel outer ring 4, a left front motor 5, a groove 6, a left rear motor 7, a right rear motor 8, a right front motor 9, a main vehicle body 10, an integrated electric adjustment board 11, a main controller 12, a radio receiver 13, a circular positioning groove 14, a wheel fixing bracket 15 and a hexagon socket screw 16. The main vehicle body 10 is made of PE material, taking into account aspects such as quality, strength and cost. A power battery 3 is installed at the rear end, and the battery used is a large-capacity, high-voltage, low-discharge-rate lithium polymer battery; a universal integrated electric adjustment board 11 is set in the middle of the inner layer of the main body 10, which has functions such as DC to AC conversion, electronic speed regulation, and reverse power supply; the main controller 12 is set on one side of the integrated electric adjustment board 11, which is a motion signal adjustment module that collects and processes motion posture information; the radio receiver 13 is set on one side of the main controller 12, which is a 2.4GHz receiver with a 6-channel transmission function; The four corners of the inner layer 10 are respectively provided with through holes, and the wheel fixing bracket 15 is connected to the bottom of the through holes by rivets. The wheel fixing bracket 15 is made of an oblique square aluminum-iron alloy hollow tube. The left front motor 5, left rear motor 7, right rear motor 8, and right front motor 9 for driving the wheel outer ring 4 to rotate are fixed at the bottom of the wheel fixing bracket 15 using hexagonal screws 16. The motor is an outer rotor brushless three-phase AC motor. The outer rotor of the motor wraps the wheel outer ring 4, and the wheel outer ring 4 is made of high-density hard rubber. ; At the same time, a charging plug 1 and a body power switch 2 are installed at the rear end of the main body 10. The charging plug 1 is an XT100 DC charging plug, and the body power switch 2 is an embedded DC rebound switch. A circular positioning groove 14 is provided at the front end of the main body 10. The circular positioning groove 14 is made of stainless steel and is used to fix the spare push-pull rod vertical rod 24; grooves 6 are provided on both sides of the main body 10 for placing the stored spare push-pull rod. The grooves 6 are made of aluminum alloy and are filled with solid grease.

[0028] In this embodiment, after the charging plug 1 is connected in parallel with the power battery 3, one end of the negative pole is connected to the negative pole of the integrated electric adjustment board 11, one end of the vehicle body power switch 2 is connected to the positive pole of the power battery 3, and the other end of the vehicle body power switch 2 is connected to the positive pole of the integrated electric adjustment board 11. Then, the high-voltage power output port of the integrated electric adjustment board 11 is connected to the left front motor 5, the left rear motor 7, the right rear motor 8, and the right front motor 9 through a power line. Each power line consists of three wires: red, black, and blue. The low-voltage power output port of the integrated electric adjustment board 11 is connected to the main controller 12. At the same time, a DuPont signal line is connected to the signal port of the main controller 12. The main controller 12 is connected to the SBUS interface of the radio receiver 13 through the DuPont signal line.

[0029] In this embodiment, the handheld transmitter is a radio transmitter terminal with a transmission frequency of 2.4GHz; the handheld transmitter includes a control joystick 29, a transmitter power switch 30, a buzzer 31, a transmitter charging port 32, a flatbed vehicle battery indicator light 33, a finger placement slot 34 and a handheld body 35. The control joystick 29 is omnidirectional and corresponds one-to-one with the movement posture of the main vehicle body 10, and has an automatic return to center function. When no operation is performed, the control joystick 29 is always in a neutral position. The top of the control joystick 29 is sharpened to increase the friction between the user's finger and the handheld body 35; the transmitter power switch 30 is a push-type switch. When pressed into the handheld body 35, the circuit is energized. When pressed again, it rebounds and the circuit is disconnected; the buzzer 31 is a handheld transmitter battery alarm prompt. When the handheld transmitter battery is low, the buzzer 31 emits a prompt sound to remind the user The user charges the device; the transmitter charging port 32 is ideally designed to use a DC2.1mm socket; the flatbed vehicle battery indicator light 33 is for the handheld transmitter to receive the downlink signal of the radio receiver 13, and after obtaining the current voltage of the power battery 3, it will indicate in green, yellow, and red respectively, where green indicates that the battery power is between 30% and 100%, yellow indicates that the battery power is between 15% and 30%, and red indicates that the battery power is below 15%; the finger placement groove 34 is where the user's fingers are placed. When in use, put the fingers other than the thumb into the finger placement groove 34 in turn, bend the thumb slightly and place it on the control stick 29, the edges of the finger placement groove 34 are rounded by chamfering to ensure the user's comfort; the handheld body 35 has a built-in omnidirectional antenna, which is connected to the radio receiver 13 within the line of sight.

[0030] In this embodiment, when in use, the transmitter power switch 30 must be turned on first, and then the vehicle body power switch 2 is turned on. Otherwise, the main controller 12 is likely to lose control after being disconnected from the handheld transmitter. After turning on the handheld transmitter 35 and the vehicle body power switch 2 respectively, the power battery 3 inputs current to the integrated electric adjustment board 11, and after the integrated electric adjustment board 11 divides the power, it supplies power to the left front motor 5, the left rear motor 7, the right rear motor 8, the right front motor 9, the main controller 12, and the radio receiver 13 respectively; when the radio receiver 13 receives the radio signal from the handheld transmitter 35, the electrical signal is fed back to the main controller 12 through the signal line, and the main controller 12 controls the alternating current output by the integrated electric adjustment board 11 to each motor; when the control stick 29 is moved upward or downward, the output current is the same, and the left front motor 5, the left rear motor 7, the right rear motor 8, the right front motor 9, the main controller 12, and the radio receiver 13 are respectively powered. The four motors, motor 5, left rear motor 7, right rear motor 8 and right front motor 9, have the same speed, and the flatbed car starts to move forward or backward; when the control stick 29 is moved to the right, the output current is larger on the left and smaller on the right, the speeds of the left front motor 5 and the left rear motor 7 are higher than the speeds of the rear motor 8 and the right front motor 9, and the flatbed car moves to the right; when the control stick 29 is moved to the left, the output current is smaller on the left and larger on the right, the speeds of the rear motor 8 and the right front motor 9 are higher than the speeds of the left front motor 5 and the left rear motor 7, and the flatbed car moves to the left; when the control stick 29 is moved diagonally sideways, the flatbed car moves to the left front, left rear, right front and right rear; when the control stick 29 returns to the middle position, the output current stops, all motors stop rotating, and the flatbed car stops moving; after use, first turn off the vehicle body power switch 2, and then turn off the transmitter power switch 30.

[0031] In this embodiment, a spare push-pull rod system is installed at the front end of the main vehicle body 10, which can be used in an emergency when the battery power of the power battery 3 is low or the power is cut off, including a groove 6, a circular positioning groove 14, a positioning slider 17, a slider connecting pin 18, a positioning connector 19, a tube wall connecting pin 20, a spare push-pull rod vertical rod end tube 21, a circular positioning groove section 22, a notch 23 at the lower end of the vertical rod, a spare push-pull rod vertical rod 24, a spare push-pull rod cross rod 25, a circular positioning boss 26, a rebound pressure piece 27 and a lateral rebound pressure piece 28. The positioning slider 17 is made of aluminum alloy. Placed inside the groove 6, it plays the role of positioning the spare push-pull rod vertical rod 24; the slider connecting pin 18 and the pipe wall connecting pin 20 are made of stainless steel and can rotate within the positioning angle; the positioning connector 19 is a connector connecting the positioning slider 17 and the spare push-pull rod vertical rod 24, and the material is selected from aluminum-iron alloy. One end of the positioning connector 19 is connected to the positioning slider 17 through the slider connecting pin 18, and the other end of the positioning connector 19 is connected to the spare push-pull rod vertical rod 24 through the pipe wall connecting pin 20; the end tube body 21 of the spare push-pull rod vertical rod needs to improve strength and is made of high-strength carbon steel The circular positioning groove section 22 is made of raw materials and has been quenched; the circular positioning groove section 22 needs to be concave and polished to ensure the normal insertion and use of the push-pull rod; the notch 23 at the lower end of the vertical rod is made of the same material as the spare push-pull rod vertical rod end tube 21, but the thickness will be increased a little, and the chamfered corners will be processed. The positioning connector 19 extends into the spare push-pull rod vertical rod 24 through the notch 23 at the lower end of the vertical rod and is connected to the tube wall connecting pin 20; the spare push-pull rod vertical rod 24 and the spare push-pull rod cross bar 25 are the main body of the spare push-pull rod system, and the material is aluminum-iron alloy, which cannot be folded and retracted Shrink, and adopt a one-time forming process to ensure the strength of the connection between the horizontal and vertical rods; the circular positioning boss 26 is installed at the connection between the spare push-pull rod vertical rod 24 and the spare push-pull rod cross bar 25, one on each side, which plays a fixing role after the push-pull rod is retracted, and the material is organic resin; the rebound pressure piece 27 is installed on each side at 1 / 5 of the spare push-pull rod cross bar 25 length near the circular positioning boss 26, and the lateral rebound pressure piece 28 is installed on the left and right ends of the spare push-pull rod cross bar 25. The two pressure pieces control the circular positioning bosses 26 on the left and right sides and are made of engineering plastics.

[0032] In this embodiment, a circular positioning boss 26 is installed on the top of the spare push-pull rod vertical rod 24, and a positioning connector 19 is installed on the bottom of the spare push-pull rod vertical rod 24. The spare push-pull rod vertical rod 24 is connected to the positioning slider 17 in the groove 6 through the positioning connector 19, and the gap between the positioning slider 17 and the groove 6 cannot be greater than 2mm; when the push-pull rod needs to be used, first press the lateral rebound pressure pieces 28 on the left and right sides of the spare push-pull rod cross bar 25 to retract the circular positioning boss 26 into the spare push-pull rod cross bar 25, and then drag the spare push-pull rod cross bar 25 outward horizontally. At the same time, the spare push-pull rod vertical rod 24 moves outward under the positioning of the positioning slider 17; when the end tube 21 of the spare push-pull rod vertical rod moves to the circular positioning groove section 22 of the circular positioning groove 14, the spare push-pull rod cross bar 25 is pulled up in an arc shape with the positioning slider 17 as the center. When the positioning connecting piece 19 is in the state of maximum tilt angle, the spare push-pull rod vertical rod 24 is inserted into the circular positioning groove 14 through the circular positioning groove section 22 for use; after use, the spare push-pull rod vertical rod 24 is pulled out of the circular positioning groove 14, and the spare push-pull rod cross bar 25 is placed horizontally in an arc shape with the positioning slider 17 as the center, and pushed inward along the direction of the groove 6. When it reaches the storage position, the rebound pressure piece 27 on the spare push-pull rod cross bar 25 is squeezed and stressed by the main vehicle body 10. At this time, the circular positioning boss 26 on the spare push-pull rod cross bar 25 pops out and falls into the circular positioning groove 14 below, and the lateral rebound pressure piece 28 protrudes outward. At this time, the push-pull rod is fixed and the storage is completed; when the push-pull rod is stored, under the dual action of the circular positioning boss 26 and the flatbed vehicle body, the push-pull rod will remain fixed in the three-axis direction.

Claims

1. A small electric remote control flatbed vehicle that is easy to store, comprising a main vehicle body, a handheld transmitter and a spare push-pull rod system, characterized in that: The main vehicle body includes a main vehicle body inner layer and a wheel fixing bracket, the wheel fixing bracket is equipped with a main vehicle body inner layer, the main vehicle body inner layer is equipped with a lithium battery, an integrated electric adjustment board, a main controller and a radio receiver, the wheel outer ring is respectively installed at the four corners of the bottom of the wheel fixing bracket, and the motor is wrapped in the wheel outer ring; the rear end of the main vehicle body is equipped with a charging plug and a vehicle body power switch, the negative pole of the charging plug connected in parallel with the negative pole of the lithium battery is connected to the negative pole of the integrated electric adjustment board, one end of the vehicle body power switch is connected to the positive pole of the lithium battery, and the other end of the vehicle body power switch is connected to the positive pole of the integrated electric adjustment board, the high-voltage power output port of the integrated electric adjustment board is connected to the motor that drives the outer ring of the wheel to rotate, the low-voltage power output port of the integrated electric adjustment board is connected to the main controller, and the main controller is connected to the radio receiver; the handheld transmitter is connected to the radio receiver for frequency synchronization; The handheld transmitter includes a handheld body, a control joystick, a transmitter power switch, a buzzer, a transmitter charging port, a flatbed battery indicator light, and a finger placement slot. The top of the handheld body is provided with a control joystick and a flatbed battery indicator light, and one side of the handheld body is provided with a transmitter power switch, a transmitter charging port, and a buzzer. The spare push-pull rod system includes a positioning slider, a spare push-pull rod vertical rod, a spare push-pull rod cross rod, a circular positioning boss, a rebound pressure piece and a lateral rebound pressure piece. The front end of the main vehicle body is provided with a circular positioning groove, and both sides of the main vehicle body are provided with grooves for accommodating the spare push-pull rod vertical rod. A positioning slider is placed in the groove, and the bottom of the spare push-pull rod vertical rod is connected to the positioning slider through a positioning connector, and the top of the spare push-pull rod vertical rod is connected to the spare push-pull rod cross rod, and a circular positioning boss is installed at the connection; the rebound pressure piece is arranged at 1 / 5 of the length of the spare push-pull rod cross rod near the circular positioning boss, and the lateral rebound pressure pieces are installed at both ends of the spare push-pull rod cross rod; When the push-pull rod is needed, first press the lateral rebound pressure pieces on the left and right sides of the spare push-pull rod horizontal bar to retract the circular positioning boss into the spare push-pull rod horizontal bar, then drag the spare push-pull rod horizontal bar outward horizontally, and the spare push-pull rod vertical bar moves outward under the positioning of the positioning slider; when the end of the spare push-pull rod vertical bar moves to the cross section of the circular positioning groove, pull up the spare push-pull rod horizontal bar in an arc shape with the positioning slider as the center, and then insert the spare push-pull rod vertical bar into the circular positioning groove through the cross section of the circular positioning groove After use, pull the spare push-pull rod vertical rod out of the circular positioning groove, place the spare push-pull rod horizontally in an arc shape with the positioning slider as the center, and push it inward along the groove direction. When it reaches the storage position, the rebound pressure piece on the spare push-pull rod horizontal rod is squeezed by the main vehicle body. At this time, the circular positioning boss on the spare push-pull rod horizontal rod pops out and falls into the circular positioning groove below. At the same time, the lateral rebound pressure piece protrudes outward. At this time, the push-pull rod is fixed and the storage is completed.

2. The small electric remote-controlled flatbed vehicle that is easy to store according to claim 1, characterized in that: The vehicle body power switch is a built-in DC rebound switch.

3. The small electric remote-controlled flatbed vehicle that is easy to store according to claim 1, characterized in that: The groove is filled with solid grease.

4. The small electric remote-controlled flatbed vehicle that is easy to store according to claim 1, characterized in that: The motor is a brushless three-phase AC motor.

5. The small electric remote-controlled flatbed vehicle that is easy to store according to claim 1, characterized in that: The handheld body is equipped with an omnidirectional antenna.

6. The small electric remote-controlled flatbed vehicle that is easy to store according to claim 1, characterized in that: The transmitter power switch is a push-type switch.

7. The small electric remote-controlled flatbed vehicle that is easy to store according to any one of claims 1 to 6, characterized in that: When using, you must first turn on the transmitter power switch, then turn on the vehicle body power switch. The lithium battery inputs current to the integrated electric adjustment board, which then distributes the power to the motor, main controller, and radio receiver respectively. When the radio receiver receives the radio signal from the handheld transmitter, the electrical signal is fed back to the main controller through the signal line, and the main controller controls the size of the alternating current output by the integrated electric adjustment board to each motor; when the output current is the same, the four motors have the same speed, and the flatbed truck starts to move forward or backward; when the output current is larger on the left and smaller on the right, the left motor speed is faster than the right, and the flatbed truck moves to the right; when the output current is smaller on the left and larger on the right, the right motor speed is faster than the left, and the flatbed truck moves to the left; when the output current stops, the motor stops, and the flatbed truck stops moving; after use, turn off the vehicle body power switch first, and then turn off the transmitter power switch.

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