A load support structure for an electric pallet truck

Abstract

The application discloses a goods bearing structure for an electric power carrier, and particularly relates to the technical field of goods transportation, which comprises a handcart, an energy storage box body is fixed to the lower end of the handcart, a rotating shaft connected with a friction wheel is rotatably arranged in the inner cavity of the energy storage box body, a baffle is fixed to the upper portion of the inner cavity of a driving motor, a clock spring is arranged between the rotating shaft and the baffle, and a shielding mechanism is symmetrically arranged on the left and right sides of the lower end of the handcart. The goods bearing structure for the electric power carrier is characterized by the design that the limiting mechanism, the clock spring and the rotating shaft are cooperatively arranged, so that the shielding of the goods on the handcart can be completed without other power sources when the device is used, the goods are prevented from falling, the operation of the device is facilitated, the shielding mechanism is adopted to shield the goods on the handcart, the goods are prevented from falling, and meanwhile, the L-shaped hollow pipe is designed in the L-shaped mode, so that the space utilization of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of cargo transportation technology, and in particular to a cargo support structure for an electric pallet truck. Background Technology

[0002] Pallet trucks are logistics handling equipment used to move goods. Manual pallet trucks, when used in a handling station, have their forks inserted into the pallet holes. A hydraulic system, driven manually, lifts and lowers the palletized goods, and the truck is then pulled manually to complete the handling operation. It is the simplest, most efficient, and most common loading, unloading, and handling tool among pallet transport vehicles in handling stations. Electric pallet trucks include fully electric pallet trucks, represented by electric forklifts.

[0003] Chinese patent document CN217600297U discloses a cargo support structure for an electric pallet truck, relating to the field of logistics transportation technology. It includes a vehicle body, a support structure, a lifting structure, and a drive structure. The support structure is mounted on the surface of the vehicle body, and includes a hydraulic cylinder fixedly mounted on the vehicle body, with the hydraulic cylinder connected to a support platform. A support cylinder is slidably mounted on the vehicle body, and connecting seats corresponding to each side of the vehicle body are mounted on the support cylinder. A control rod is rotatably mounted on the connecting seat, and a guardrail located outside the support platform is mounted on the side of the control rod away from the hydraulic cylinder. This device uses a support platform with guardrails, protecting goods without affecting the transportation range, making the transportation process safer and more automated.

[0004] However, in actual use, the device requires separate control of the supporting structure to cover the cargo on the vehicle. It cannot automatically cover the cargo by moving the device, which is inconvenient to operate. In addition, the device cannot fully retract the guardrail when transporting cargo, making it inconvenient to transport the cargo, and the space utilization rate of the device is also low. Summary of the Invention

[0005] The main objective of this invention is to provide a cargo support structure for an electric pallet truck, which can effectively solve the problem that the support structure needs to be controlled separately to cover the cargo on the vehicle, which is inconvenient for the operation of the device.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a cargo support structure for an electric pallet truck, comprising a handcart, a drive motor for driving the handcart to move is fixedly mounted at the lower end of the handcart, an energy storage box is fixedly mounted at the lower end of the energy storage box, a friction wheel one fixedly connected to the output end of the drive motor is rotatably mounted at the end of the energy storage box near the drive motor, a friction wheel two cooperating with the friction wheel one is rotatably mounted at the end of the energy storage box near the drive motor, a rotating shaft fixedly connected to the friction wheel two is rotatably mounted in the inner cavity of the energy storage box, a baffle is fixedly mounted on the upper part of the inner cavity of the energy storage box, a spring is provided between the rotating shaft and the baffle, a limiting mechanism for limiting the rotating shaft is provided at the end of the energy storage box away from the drive motor, a blocking mechanism is symmetrically provided on the left and right sides of the lower end of the handcart, a transmission component adapted to the two blocking mechanisms is provided at the lower end of the handcart, and a pedal adapted to the limiting mechanism is also provided at the lower end of the handcart.

[0007] Preferably, the limiting mechanism includes a rotating disk fixedly connected to the rotating shaft, a fixing rod fixedly fixed on the outer surface of the rotating disk, a mounting plate fixedly fixed at the end of the energy storage box away from the drive motor, two sliding rods slidably mounted on the upper end of the mounting plate and extending downward through the mounting plate, a limiting rod adapted to the fixing rod being fixedly fixed at the upper end of the two sliding rods, and a return spring being fixedly fixed between the limiting rod and the mounting plate.

[0008] Preferably, the top surface of the limiting rod is inclined downward on the side away from the fixing rod, and the bottom surface of the fixing rod is inclined upward on the side away from the limiting rod.

[0009] Preferably, the rotatable connection of the pedal is located between any one of the sliding rods via a connecting line.

[0010] Preferably, the shielding mechanism includes an L-shaped hollow tube, the vertical part of which extends upward through the bottom plate of the handcart, and the L-shaped hollow tubes of the two shielding mechanisms are located on opposite sides. A second return spring is fixed to the side of the horizontal cavity of the L-shaped hollow tube away from the vertical part, and multiple shielding components are arrayed in the cavity of the L-shaped hollow tube. The shielding assembly includes a movable ball. The outer surface of the movable ball has a mounting groove and a limiting groove on the side near the second reset spring and the side away from the second reset spring, respectively. A third reset spring is fixed to the inner cavity of the limiting groove on the side near the second reset spring. A second limiting rod, which slides within the mounting groove, is fixed to the end of the third reset spring near the second reset spring. A guide rod extending outward through the movable ball is fixed to the outer surface of the second limiting rod. A through groove adapted to the guide rod is provided within the inner cavity of the mounting groove. An L-shaped guide groove adapted to the guide rod is provided within the inner cavity of the L-shaped hollow tube. An arc-shaped guide block is fixed at the corner of the inner cavity of the L-shaped guide groove.

[0011] Preferably, the movable balls of the plurality of the shielding components are connected by a connecting line two.

[0012] Preferably, when the reset spring three is in its natural state, the side of the guide rod away from the limiting rod two is in contact with the arc-shaped guide block, and the limiting rod two is located in the adjacent limiting groove. When the reset spring three is in its compressed state, the guide rod is located in the L-shaped guide groove, and the limiting rod two is not located in the adjacent limiting groove.

[0013] Preferably, the transmission assembly includes a second mounting plate fixed to the lower end of the handcart, two support blocks symmetrically fixed to the lower end of the second mounting plate, a double-groove take-up coil rotatably connected between the two support blocks, and the end of the second connecting line away from the plurality of shielding components is fixed to the outer surface of the double-groove take-up coil, the double-groove take-up coil being connected to the second friction wheel via a belt and a bevel gear set.

[0014] Preferably, when the trolley moves forward, the second return spring is released, and when the spring is released, the second return spring is contracted.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The cargo support structure adopts a design in which friction wheel one and friction wheel two cooperate with each other, which enables the drive motor to drive friction wheel two to rotate when it rotates. At the same time, when the spring is contracted to its minimum state, friction wheel one and friction wheel two will slip, preventing the spring from breaking. This makes the device more stable during use. The design of the limiting mechanism cooperating with the spring and the rotating shaft, and the limiting rod and the fixed rod limiting the spring, prevents the spring from being released when it is contracted. This allows the power to be stored, so that the device can cover the cargo on the handcart without other power sources, preventing the cargo from falling and facilitating the operation of the device.

[0016] This invention employs a shielding mechanism design. Through the coordinated design of multiple shielding components, when the multiple shielding components are in a vertical state (i.e., when the multiple shielding components are located outside the L-shaped hollow tube), they can shield the goods on the handcart to prevent the goods from falling. At the same time, the L-shaped hollow tube adopts an L-shaped design, which allows the multiple shielding components to be housed in the horizontal part of the L-shaped hollow tube, thereby improving the space utilization of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a bottom view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the energy storage box of the present invention; Figure 4 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the limiting mechanism of the present invention; Figure 6 This is a schematic diagram of the shielding mechanism of the present invention; Figure 7 This is a schematic diagram of the shielding component of the present invention; Figure 8 This is a cross-sectional view of the L-shaped hollow tube of the present invention; Figure 9 For the present invention Figure 6 Enlarged view of point B in the middle; Figure 10 This is a schematic diagram of the transmission component of the present invention.

[0018] In the diagram: 1. Handcart; 2. Baffle mechanism; 3. Transmission assembly; 11. Drive motor; 12. Energy storage box; 13. Friction wheel one; 14. Friction wheel two; 15. Rotating shaft; 16. Baffle; 17. Spring; 18. Limiting mechanism; 181. Rotating disc; 182. Fixed rod; 183. Mounting plate one; 184. Sliding rod; 185. Limiting rod one; 186. Return spring one; 19. Pedal; 21. L-shaped hollow tube; 22. Return spring two; 23. Baffle assembly; 231. Movable ball; 232. Mounting groove; 233. Limiting groove; 234. Return spring three; 235. Limiting rod two; 236. Guide rod; 237. L-shaped guide groove; 238. Arc-shaped guide block; 24. Connecting wire two; 31. Mounting plate two; 32. Support block; 33. Double groove take-up coil. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] Example 1, as Figures 1-3 As shown, a cargo support structure for an electric pallet truck includes a handcart 1. A drive motor 11 for moving the handcart 1 is fixed to the lower end of the handcart 1. The drive motor 11 is prior art, and its installation and control methods are conventional designs in the prior art. The output end of the drive motor 11 is connected to the two wheels of the handcart 1 via a belt, thereby enabling the device to move. An energy storage box 12 is fixed to the lower end of the handcart 1. A component rotatably mounted on the end of the energy storage box 12 near the drive motor 11 is connected to the drive motor 11. A friction wheel 13 is fixedly connected to the output end. A second friction wheel 14, which cooperates with the first friction wheel 13, is rotatably installed on one end of the energy storage box 12 near the drive motor 11. The second friction wheel 14 rotates in the opposite direction when the first friction wheel 13 rotates due to mutual friction with the first friction wheel 13. A rotating shaft 15, which is fixedly connected to the second friction wheel 14, is rotatably installed in the inner cavity of the energy storage box 12. A baffle 16 is fixed on the upper part of the inner cavity of the energy storage box 12. A spring 17 is provided between the rotating shaft 15 and the baffle 16.

[0021] Among them, the baffle 16 is used to facilitate the installation of the spring 17. When the device is moving (i.e., when the drive motor 11 starts and drives the wheel to rotate), the friction wheel 14 can rotate, thereby causing the spring 17 to contract and further store kinetic energy. The end of the energy storage box 12 away from the drive motor 11 is provided with a limiting mechanism 18 for limiting the rotation shaft 15. The lower end of the handcart 1 is symmetrically provided with blocking mechanisms 2 on the left and right sides. The lower end of the handcart 1 is provided with a transmission component 3 adapted to the two blocking mechanisms 2. The lower end of the handcart 1 is also provided with a pedal 19 adapted to the limiting mechanism 18.

[0022] like Figure 4 and Figure 5As shown, the limiting mechanism 18 includes a rotating disk 181 fixedly connected to the rotating shaft 15. The rotating disk 181 rotates when the rotating shaft 15 rotates. A fixing rod 182 is fixed to the outer surface of the rotating disk 181. A mounting plate 183 is fixed to the end of the energy storage box 12 away from the drive motor 11. Two sliding rods 184 are slidably mounted on the upper end of the mounting plate 183, extending downwards through it. A limiting rod 185, adapted to the fixing rod 182, is fixed to the upper end of both sliding rods 184. A return spring 186 is fixed between rod 185 and mounting plate 183. Two sliding rods 184 allow the limiting rod 185 to move up and down, while the return spring 186 facilitates the reset of the limiting rod 185. When the rotating disk 181 rotates, the fixed rod 182 pushes the limiting rod 185 downward. When the fixed rod 182 is not in contact with the limiting rod 185, the limiting rod 185 moves upward, thus limiting the fixed rod 182 and preventing it from rotating in the opposite direction.

[0023] In addition, the top surface of the limiting rod 185, away from the fixed rod 182, is inclined downwards, while the bottom surface of the fixed rod 182, away from the limiting rod 185, is inclined upwards. This allows the drive motor 11 to rotate the rotating disk 181 through the interaction between the friction wheel 13 and the friction wheel 14 when the handcart 1 moves forward. At the same time, due to the inclined surface design of the limiting rod 185 and the fixed rod 182, the limiting rod 185 can move downwards when it is in contact with the fixed rod 182 and the rotating disk 181 continues to rotate. When the rotating disk 181 rotates in the opposite direction (i.e., when the spring spring 17 is not subjected to external force, the spring spring 17 will be released, thereby driving the rotating disk 181 to rotate in the opposite direction), the limiting rod 185 can limit the fixed rod 182, preventing the rotating disk 181 from rotating in the opposite direction.

[0024] In addition, such as Figure 2 As shown, the rotatable connection of the pedal 19 is connected to any one of the sliding rods 184 via a connecting line, so that when the operator steps on the pedal 19, the limiting rod 185 can move downward, further preventing the limiting rod 185 from limiting the fixed rod 182.

[0025] The specific implementation of this embodiment is as follows: When using the device, the goods to be transported are first placed on the handcart 1, and then the drive motor 11 is started. The drive motor 11 drives the handcart 1 to move. When the drive motor 11 rotates, it drives the friction wheel 14 to rotate through the friction wheel 13, which further compresses the spring 17. At the same time, due to the design of the friction wheel 13 and the friction wheel 14, when the spring 17 is compressed to the minimum, the friction wheel 13 and the friction wheel 14 can slip. At the same time, due to the cooperation between the fixed rod 182 and the limit rod 185, the rotating shaft 15 cannot rotate in the opposite direction (that is, the spring 17 cannot be released). The spring 17 stores the power and provides power for the blocking mechanism 2. When the spring 17 needs to be released, simply press the pedal 19. The pedal 19 can move the limit rod 185 downward through the connecting line 1, further preventing the limit rod 185 from limiting the fixed rod 182. Then the spring 17 can be released, driving the friction wheel 14 to rotate in the opposite direction.

[0026] Example 2 is an improvement on Example 1, which further improves the shielding mechanism 2 and the transmission component 3 so that the device can shield the goods on the handcart 1 during use and prevent the goods from falling off.

[0027] like Figure 6 As shown, the shielding mechanism 2 includes an L-shaped hollow tube 21. The vertical part of the L-shaped hollow tube 21 extends upward through the bottom plate of the handcart 1, and the L-shaped hollow tubes 21 of the two shielding mechanisms 2 are located on opposite sides. A return spring 22 is fixed to the side of the horizontal cavity of the L-shaped hollow tube 21 away from the vertical part. Multiple shielding components 23 are arrayed in the cavity of the L-shaped hollow tube 21. The return spring 22 can push the multiple shielding components 23 to move away from the transmission component 3, so that the multiple shielding components 23 can change from a horizontal state to a vertical state, thereby shielding the goods on the handcart 1 and preventing the goods from falling off the handcart 1 during movement.

[0028] like Figure 7-9 As shown, the blocking component 23 includes a movable ball 231, and multiple movable balls 231 of the blocking component 23 are connected by a connecting line 24 (e.g., Figure 9As shown), multiple blocking components 23 can move towards the side closer to the transmission component 3 or away from the transmission component 3. The outer surface of the movable ball 231 has an installation groove 232 and a limiting groove 233 respectively on the side closer to the second reset spring 22 and the side away from the second reset spring 22. The inner cavity of the limiting groove 233 is fixed with a third reset spring 234 on the side closer to the second reset spring 22. The end of the third reset spring 234 is fixed with a limiting rod 235 that slides in the installation groove 232.

[0029] Specifically, the return spring 234 is used to push the limit rod 235, so that the limit rod 235 can enter the adjacent limit groove 233, and further so that the multiple blocking components 23 can be fixed in the horizontal or vertical state, thereby enabling the multiple blocking components 23 to block the goods on the handcart 1. The outer surface of the limit rod 235 is fixed with a guide rod 236 that extends outward through the movable ball 231. The inner cavity of the mounting groove 232 is provided with a through groove that matches the guide rod 236. The inner cavity of the L-shaped hollow tube 21 is provided with an L-shaped guide groove 237 that matches the guide rod 236. An arc-shaped guide block 238 is fixed at the corner of the inner cavity of the L-shaped guide groove 237.

[0030] In addition, when the return spring 234 is in its natural state, the side of the guide rod 236 away from the limit rod 235 contacts the arc-shaped guide block 238, and the limit rod 235 is located in the adjacent limit groove 233, which allows the multiple adjacent blocking components 23 not located in the L-shaped hollow tube 21 to be placed vertically, thereby preventing the box placed on top of the trolley 1 from falling during transportation. When the return spring 234 is in the compressed state, the guide rod 236 is located in the L-shaped guide groove 237, and the limit rod 235 is not located in the adjacent limit groove 233, which allows the multiple blocking components 23 to move at the corner of the L-shaped hollow tube 21.

[0031] Furthermore, since it is not necessary to fix two adjacent blocking components 23 when multiple blocking components 23 are located in the horizontal part of the L-shaped hollow tube 21, it is only necessary to ensure that the limiting rod 235 is located in the adjacent limiting groove 233 when the blocking component 23 is in the vertical part. At the same time, in order to prevent the blocking component 23 from moving from the horizontal part to the vertical part of the L-shaped hollow tube 21, the limiting rod 235 will be located in the adjacent limiting groove 233 at the corner of the L-shaped hollow tube 21, so that the blocking component 23 will not move from the horizontal part to the vertical part. This can be solved by changing the arc angle at the corner of the L-shaped hollow tube 21, which will not be described in detail in this invention.

[0032] like Figure 10As shown, the transmission assembly 3 includes a mounting plate 31 fixed to the lower end of the handcart 1. Two support blocks 32 are symmetrically fixed to the lower end of the mounting plate 31. A double-groove take-up coil 33 is rotatably connected between the two support blocks 32. The end of the connecting wire 24 away from the multiple shielding components 23 is fixed to the outer surface of the double-groove take-up coil 33. The double-groove take-up coil 33 is connected to the friction wheel 14 through a belt and a bevel gear set, so that the double-groove take-up coil 33 will also rotate when the friction wheel 14 rotates.

[0033] In addition, when the trolley 1 moves forward, the second return spring 22 is released, causing the multiple blocking components 23 to move away from the transmission component 3 (i.e., from the horizontal part of the L-shaped hollow tube 21 to the vertical part). This allows the multiple blocking components 23 located outside the L-shaped hollow tube 21 to block the goods on the trolley 1, preventing the goods from falling off during the movement of the trolley 1. When the spring 17 is released, the second return spring 22 is contracted, causing the multiple blocking components 23 to move closer to the transmission component 3 (i.e., from the vertical part of the L-shaped hollow tube 21 to the horizontal part). This allows the multiple blocking components 23 to be stored away, facilitating the handling of goods.

[0034] The specific implementation of this embodiment is as follows: When the handcart 1 moves forward (when the spring 17 retracts), the friction wheel 14, through its connection with the double-groove take-up coil 33, causes the return spring 22 to release, further causing multiple blocking components 23 to move away from the transmission component 3, from the horizontal part of the L-shaped hollow tube 21 to the vertical part. Then, the multiple blocking components 23 located outside the L-shaped hollow tube 21 can block the goods on the handcart 1, preventing the goods from falling off during transportation. When the spring 17 is released, the friction wheel 14, through its connection with the double-groove take-up coil 33, causes the return spring 22 to retract, further causing the multiple blocking components 23 to move closer to the blocking components 23, from the vertical part of the L-shaped hollow tube 21 to the horizontal part, thereby achieving the purpose of storing the multiple blocking components 23 and facilitating the transportation of goods. When the guide rod 236 is in the L-shaped guide groove 237, the second limiting rod 235 can be inserted into the adjacent limiting groove 233, so that the two adjacent blocking components 23 are relatively fixed. When the guide rod 236 contacts the arc-shaped guide block 238 and the blocking component 23 continues to move, due to the mutual friction between the guide rod 236 and the arc-shaped guide block 238, the second limiting rod 235 is not located in the adjacent 223, which facilitates the movement of the blocking component 23 at the corner of the L-shaped hollow tube 21.

[0035] It should be noted that the specific installation method, circuit connection method and control method of the handcart 1 and drive motor 11 in this invention are all conventional designs, and will not be described in detail in this invention.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A cargo support structure for an electric pallet truck, comprising a handcart (1), characterized in that: The lower end of the handcart (1) is fixed with a drive motor (11) for driving the handcart (1) to move. The lower end of the handcart (1) is fixed with an energy storage box (12). A friction wheel (13) is rotatably mounted on one end of the energy storage box (12) near the drive motor (11) and is fixedly connected to the output end of the drive motor (11). A friction wheel (14) that cooperates with the friction wheel (13) is rotatably mounted on the other end of the energy storage box (12) near the drive motor (11). A rotating shaft that is fixedly connected to the friction wheel (14) is rotatably mounted inside the energy storage box (12). 15), a baffle (16) is fixed on the upper part of the inner cavity of the energy storage box (12), a spring spring (17) is provided between the rotating shaft (15) and the baffle (16), a limiting mechanism (18) for limiting the rotating shaft (15) is provided at the end of the energy storage box (12) away from the drive motor (11), a blocking mechanism (2) is provided on the left and right sides of the lower end of the handcart (1), a transmission component (3) adapted to the two blocking mechanisms (2) is provided at the lower end of the handcart (1), and a pedal (19) adapted to the limiting mechanism (18) is also provided at the lower end of the handcart (1). The shielding mechanism (2) includes an L-shaped hollow tube (21), the vertical part of which extends upward through the bottom plate of the handcart (1), and the L-shaped hollow tubes (21) of the two shielding mechanisms (2) are located on opposite sides. A second return spring (22) is fixed to the side of the horizontal cavity of the L-shaped hollow tube (21) away from the vertical part. Multiple shielding components (23) are arrayed in the cavity of the L-shaped hollow tube (21). The shielding assembly (23) includes a movable ball (231). The outer surface of the movable ball (231) has a mounting groove (232) on the side near the second reset spring (22) and a limiting groove (233) on the side away from the second reset spring (22). A third reset spring (234) is fixed to the inner cavity of the limiting groove (233) on the side near the second reset spring (22). A second limiting rod (235) is fixed to the end of the third reset spring (234) near the second reset spring (22), which slides within the mounting groove (232). The outer surface of the limiting rod (235) is fixed with a guide rod (236) that extends outward through the movable ball (231). The inner cavity of the mounting groove (232) is provided with a through groove that matches the guide rod (236). The inner cavity of the L-shaped hollow tube (21) is provided with an L-shaped guide groove (237) that matches the guide rod (236). An arc-shaped guide block (238) is fixed at the corner of the inner cavity of the L-shaped guide groove (237). The movable balls (231) of the multiple shielding components (23) are connected by a connecting line (24).

2. The cargo support structure for an electric pallet truck according to claim 1, characterized in that: The limiting mechanism (18) includes a rotating disk (181) fixedly connected to the rotating shaft (15). A fixing rod (182) is fixed on the outer surface of the rotating disk (181). An installation plate (183) is fixed at one end of the energy storage box (12) away from the drive motor (11). Two sliding rods (184) are slidably installed on the upper end of the installation plate (183) and pass through the installation plate (183) downward. A limiting rod (185) adapted to the fixing rod (182) is fixed together on the upper end of the two sliding rods (184). A return spring (186) is fixed together between the limiting rod (185) and the installation plate (183).

3. The cargo support structure for an electric pallet truck according to claim 2, characterized in that: The top surface of the limiting rod (185) is inclined downward on the side away from the fixing rod (182), and the bottom surface of the fixing rod (182) is inclined upward on the side away from the limiting rod (185).

4. The cargo support structure for an electric pallet truck according to claim 2, characterized in that: The rotatable connection of the pedal (19) is located between any of the sliding rods (184) via a connecting line.

5. The cargo support structure for an electric pallet truck according to claim 1, characterized in that: When the reset spring three (234) is in its natural state, the side of the guide rod (236) away from the limiting rod two (235) is in contact with the arc-shaped guide block (238), and the limiting rod two (235) is located in the adjacent limiting groove (233). When the reset spring three (234) is in its compressed state, the guide rod (236) is located in the L-shaped guide groove (237), and the limiting rod two (235) is not located in the adjacent limiting groove (233).

6. The cargo support structure for an electric pallet truck according to claim 1, characterized in that: The transmission assembly (3) includes a mounting plate two (31) fixed to the lower end of the handcart (1). Two support blocks (32) are symmetrically fixed to the lower end of the mounting plate two (31). A double groove take-up coil (33) is rotatably connected between the two support blocks (32). The end of the connecting line two (24) away from the multiple shielding assemblies (23) is fixed to the outer surface of the double groove take-up coil (33). The double groove take-up coil (33) is connected to the friction wheel two (14) through a belt and a bevel gear set.

7. The cargo support structure for an electric pallet truck according to claim 6, characterized in that: When the handcart (1) moves forward, the second reset spring (22) is released, and when the spring spring (17) is released, the second reset spring (22) is contracted.

Images