A logistics trolley for the front subframe of an automobile

Abstract

The utility model relates to the technical field of automobile parts transportation, and more specifically, to a logistics trolley for a front subframe of an automobile, which includes a frame with an inner cavity, and a plurality of placement layers are arranged on the frame, and the placement layers include a first supporting member and a second supporting member, and the first supporting member and the second supporting member are respectively provided with a first supporting surface and a second supporting surface, and the first supporting member and the second supporting member are respectively provided with a first abutting portion and a second abutting portion; the frame is also provided with a first upper limit portion and a second upper limit portion; in an unloaded state, the first supporting surface and the second supporting surface are both on a vertical plane and the first supporting member and the second supporting member are both located outside the inner cavity; in a loaded state, the first supporting surface and the second supporting surface are both on a horizontal plane and both have at least a portion extending into the inner cavity. The utility model sets a plurality of placement layers to place the front subframe, and the storage and access of each layer of the front subframe do not interfere with each other, which can improve the transportation efficiency of the front subframe.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts transportation, and more specifically, to a logistics trolley for an automobile front subframe. Background Art

[0002] The front subframe of a vehicle is a structural component that connects the front of the vehicle body to the front suspension system. It is typically located in front of the engine compartment, connected to the chassis and connected to the front suspension system through structural components such as crossmembers and side members. It distributes the impact and torque generated by the front suspension system, ensuring vehicle stability and maneuverability during driving. During the automotive manufacturing or assembly process, the front subframe, as a critical structural component, requires transportation and installation on the production line. Logistics trolleys can be used to handle and transport the front subframe, allowing it to be moved from one workstation or production link to another, thereby facilitating smooth vehicle production and improving production efficiency.

[0003] The prior art discloses a new energy vehicle sheet metal parts transport trolley, comprising a bottom bracket, a protective plate and a fixed seat, wherein the upper end of the bottom bracket is connected to main support rods by bolts, and connecting rods are connected between the upper ends of the main support rods by bolts, and a middle support rod is arranged between the main support rods on both sides of the bottom bracket, and the middle support rod is connected to the connecting rod and the bottom bracket by bolts, and support frames are arranged on both sides of the upper end of the bottom bracket, and the support frames are connected to the main support rods by bolts.

[0004] Because the front subframe is a heavy structural component, it needs to be placed horizontally on the logistics trolley to maintain stability. To facilitate the manipulator's removal of the front subframe from the trolley, it is necessary to ensure that the front subframe is not interfered with by any structure on the trolley during its upward movement. Therefore, the above technical solution, like most existing trolleys, can only accommodate one layer of front subframes, resulting in low transfer efficiency of the front subframes. Utility Model Content

[0005] In response to the problem that the logistics trolley in the above-mentioned prior art can only hold one layer of front sub-frame, resulting in low transfer efficiency of the front sub-frame, the utility model provides a logistics trolley for the front sub-frame of an automobile, which can store multiple layers of front sub-frames at the same time, and the storage and retrieval of each layer of front sub-frames do not interfere with each other, which can improve the transfer efficiency of the front sub-frame.

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is:

[0007] A logistics trolley for a front subframe of an automobile, comprising a frame with an inner cavity, the frame being provided with multiple placement layers distributed in a vertical direction for placing the front subframe, the placement layers each comprising a first supporting member and a second supporting member rotatably connected to opposite sides of the frame, the rotation axes of the first supporting member and the second supporting member being parallel to each other and both being parallel to the bottom surface of the frame, the first supporting member and the second supporting member being respectively provided with a first supporting surface and a second supporting surface for supporting the front subframe, and the first supporting member and the second supporting member being respectively provided with a There are a first abutment portion and a second abutment portion; a first upper limit portion and a second upper limit portion are also provided on opposite sides of the frame; in an unloaded state, the first supporting surface and the second supporting surface are both on a vertical plane and the first supporting member and the second supporting member are both located outside the inner cavity; when the first supporting member and the second supporting member are respectively rotated until the first abutment portion abuts against the first upper limit portion and the second abutment portion abuts against the second upper limit portion, the first supporting surface and the second supporting surface are both on a horizontal plane and both of them at least partially extend into the inner cavity.

[0008] In the above technical solution, the first support surface and the second support surface are both located on a vertical plane when unloaded, and are both located outside the inner cavity of the frame; when the front subframe is placed in the inner cavity and the opposite sides of the front subframe are placed on the first support surface and the second support surface respectively, the first supporting member will rotate until the first abutting portion abuts against the first upper limit portion, so that the first support surface remains horizontal, and the second supporting member will rotate until the second abutting portion abuts against the second upper limit portion, so that the second support surface remains horizontal, thereby keeping the front subframe stable; then, the front subframe is placed on each placement layer from bottom to top in this manner. When the front subframe in the frame needs to be transferred to the next production station, the top front subframe is first grabbed and moved upward to separate from the frame. After the front subframe separates from the first and second supporting members, the first supporting member will rotate under its own weight until the first support surface returns to the vertical plane and to the outside of the inner cavity, and the second supporting member will rotate under its own weight until the second support surface returns to the vertical plane and to the outside of the inner cavity. The lower front subframe can then be removed from the inner cavity of the frame without interference from the upper placement layer during its upward movement. Since each layer of front subframes can be accessed independently of one another, this type of logistics trolley can store multiple layers of front subframes, improving their transfer efficiency. Furthermore, there's no need to manually rotate the first and second supporting members to their initial positions, making access more flexible and convenient.

[0009] Preferably, the placement layer also includes a third supporting member and a fourth supporting member rotatably connected to opposite sides of the frame, the rotation axes of the third supporting member and the fourth supporting member are parallel to each other and are both parallel to the bottom surface of the frame, the third supporting member and the fourth supporting member are respectively provided with a third supporting surface and a fourth supporting surface for supporting the front sub-frame, and the third supporting member and the fourth supporting member are respectively provided with a third abutment portion and a fourth abutment portion; a third upper limit portion and a fourth upper limit portion are also provided on the opposite sides of the frame; in an unloaded state, the third supporting surface and the fourth supporting surface are both on a vertical plane and the third supporting member and the fourth supporting member are both located outside the inner cavity; when the third supporting member and the fourth supporting member are respectively rotated to the point where the third abutment portion abuts against the third upper limit portion and the fourth abutment portion abuts against the fourth upper limit portion, the third supporting surface and the fourth supporting surface are both on a horizontal plane and both of them at least partially extend into the inner cavity. It is understood that adding the third and fourth supporting members to support the front subframe can provide more support area and support points, thereby improving the stability of the front subframe. The working principles of the third and fourth supporting members are the same as those of the first and second supporting members, and therefore will not be further described.

[0010] Preferably, a first lower limit portion and a third lower limit portion are further provided on the side of the frame where the first upper limit portion is located, and the first lower limit portion and the third lower limit portion are respectively located below the first upper limit portion and the third upper limit portion; a second lower limit portion and a fourth lower limit portion are further provided on the side of the frame where the second upper limit portion is located, and the second lower limit portion and the fourth lower limit portion are respectively located below the second upper limit portion and the fourth upper limit portion; in an unloaded state, the first abutting portion abuts against the first lower limit portion, the second abutting portion abuts against the second lower limit portion, the third abutting portion abuts against the third lower limit portion, and the fourth abutting portion abuts against the fourth lower limit portion. It is understandable that the first lower limit portion limits the rotation of the first supporting member by limiting the downward movement of the first abutting portion, thereby preventing the first supporting member from continuing to rotate under external force in the unloaded state until it extends into the inner cavity and interferes with the upward movement of the lower front subframe. The functions of the second lower limiting portion, the third lower limiting portion and the fourth lower limiting portion are the same as those of the first lower limiting portion.

[0011] Preferably, the frame is provided with a first limiting groove, a second limiting groove, a third limiting groove, and a fourth limiting groove, wherein the first upper limiting portion and the first lower limiting portion are respectively the top side and the bottom side of the inner wall of the first limiting groove; the second upper limiting portion and the second lower limiting portion are respectively the top side and the bottom side of the inner wall of the second limiting groove; the third upper limiting portion and the third lower limiting portion are respectively the top side and the bottom side of the inner wall of the third limiting groove; the fourth upper limiting portion and the fourth lower limiting portion are respectively the top side and the bottom side of the inner wall of the fourth limiting groove. The structure of each upper limiting portion and each lower limiting portion is relatively simple, which not only facilitates the processing of the logistics trolley, but also helps to reduce the weight of the logistics trolley.

[0012] Preferably, the placement layer also includes a first support portion and a second support portion provided on the frame, the rotation axis of the first supporting member being located between the first abutting portion and the first supporting member, and the rotation axis of the second supporting member being located between the second abutting portion and the second supporting member; when the first abutting portion abuts against the first upper limit portion, the bottom surface of the first supporting member abuts against the first support portion, and when the second abutting portion abuts against the second upper limit portion, the bottom surface of the second supporting member abuts against the second support portion. When the front subframe is placed on the first support surface of the first supporting member and the second support surface of the second supporting member, the first support portion can be supported on the bottom of the first supporting member, thereby reducing the bearing pressure of the first supporting member and making the first supporting member more stable on the frame. Similarly, the second support portion can make the second supporting member more stable on the frame.

[0013] Preferably, the first and second supporting members are respectively provided with a first slot and a second slot for accommodating the vehicle body connection end of the front subframe, with the first support surface and the second support surface located within the first slot and the second slot, respectively. When placing the front subframe, the two vehicle body connection ends of the front subframe are placed in the first and second slots, respectively. The first and second slots further restrict the horizontal movement of the front subframe, thereby maintaining a more stable state.

[0014] Preferably, the first support surface, the second support surface, the third support surface, and the fourth support surface are all provided with a soft rubber layer. The soft rubber layer can cushion the collision and friction between the front subframe and each support surface, thereby preventing the front subframe from being worn and reducing noise generated by the collision and friction between the front subframe and each support surface.

[0015] Preferably, a forklift opening is provided at the bottom of the frame, which can cooperate with the fork of a forklift to facilitate the forklift to transfer and load and unload the logistics trolley.

[0016] Preferably, at least three casters that are not in the same straight line are provided at the bottom of the frame. The provision of casters facilitates the movement of the logistics trolley, thereby improving the efficiency and flexibility of transportation.

[0017] Preferably, a traction handle is provided on one side of the frame to facilitate staff or other mechanical equipment to pull the logistics trolley.

[0018] The beneficial effects of the present invention are as follows: the logistics trolley is provided with multiple layers for placing the front sub-frame, and the storage and access of the front sub-frames on each layer do not interfere with each other. A trolley can store multiple front sub-frames at the same time, which is beneficial to improving the transportation efficiency of the front sub-frame; the first supporting member, the second supporting member, the third supporting member and the fourth supporting member for supporting the front sub-frame can automatically rotate and reset to the outside of the inner cavity of the frame in an empty state, without manual reset, and the storage and access of the front sub-frame are more flexible and convenient; the rotation angle ranges of the first supporting member, the second supporting member, the third supporting member and the fourth supporting member are respectively limited by the first limiting groove, the second limiting groove, the third limiting groove and the fourth limiting groove, and the load state and the empty state of each supporting member are fixed; a soft rubber layer is provided in contact with the front sub-frame to avoid mutual friction and collision between the front sub-frame and each support member, and the front sub-frame can be better protected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a logistics trolley with a front subframe of an automobile from one perspective;

[0020] Figure 2 yes Figure 1 A magnified schematic diagram of part A in FIG;

[0021] Figure 3 yes Figure 1 A magnified schematic diagram of part B in FIG.

[0022] Figure 4 is a structural diagram of the first supporting member;

[0023] Figure 5 is a schematic structural diagram of a second supporting member;

[0024] Figure 6 It is a structural diagram of a logistics trolley with a front subframe of an automobile from another perspective.

[0025] In the accompanying drawings: 1-frame; 101-inner cavity; 102-first limiting groove; 103-second limiting groove; 104-third limiting groove; 105-fourth limiting groove; 106-first supporting portion; 107-second supporting portion; 2-first supporting member; 201-first supporting surface; 202-first abutting portion; 203-first slot; 3-second supporting member; 301-second supporting surface; 302-second abutting portion; 303-second slot; 4-third supporting member; 401-third supporting surface; 402-third abutting portion; 5-fourth supporting member; 501-fourth supporting surface; 502-fourth abutting portion; 6-soft rubber layer; 7-forklift opening; 8-castor; 9-traction handle; 10-front subframe. DETAILED DESCRIPTION

[0026] The drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate the embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent actual product dimensions. Those skilled in the art will understand that some well-known structures and their descriptions may be omitted from the drawings. The positional relationships depicted in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0029] Example 1

[0030] like Figures 1 to 6The logistics trolley for the front subframe of an automobile shown in the figure includes a frame 1 with an inner cavity 101, and the frame 1 is provided with multiple placement layers distributed along the vertical direction for placing the front subframe 10, each placement layer includes a first supporting member 2 and a second supporting member 3 rotatably connected to opposite sides of the frame 1, the rotation axes of the first supporting member 2 and the second supporting member 3 are parallel to each other and both are parallel to the bottom surface of the frame 1, and the first supporting member 2 and the second supporting member 3 are respectively provided with a first supporting surface 201 and a second supporting surface 301 for supporting the front subframe 10, and the first supporting member 2 and the second supporting member 3 A first abutment 202 and a second abutment 302 are respectively provided on the frame 1; a first upper limit portion and a second upper limit portion are also provided on opposite sides of the frame 1; in an unloaded state, the first supporting surface 201 and the second supporting surface 301 are both on a vertical plane and the first supporting member 2 and the second supporting member 3 are both located outside the inner cavity 101; when the first supporting member 2 and the second supporting member 3 are respectively rotated until the first abutment 202 abuts against the first upper limit portion and the second abutment 302 abuts against the second upper limit portion, the first supporting surface 201 and the second supporting surface 301 are both on a horizontal plane and both partially extend into the inner cavity 101.

[0031] Furthermore, the placement layer also includes a third supporting member 4 and a fourth supporting member 5 rotatably connected to opposite sides of the frame 1. The rotation axes of the third supporting member 4 and the fourth supporting member 5 are parallel to each other and to the bottom surface of the frame 1. The third supporting member 4 and the fourth supporting member 5 are respectively provided with a third supporting surface 401 and a fourth supporting surface 501 for supporting the front subframe 10. The third supporting member 4 and the fourth supporting member 5 are respectively provided with a third abutting portion 402 and a fourth abutting portion 502; on opposite sides of the frame 1 A third upper limit portion and a fourth upper limit portion are also provided; in the unloaded state, the third support surface 401 and the fourth support surface 501 are both on a vertical plane, and the third support member 4 and the fourth support member 5 are both located outside the inner cavity 101; when the third support member 4 and the fourth support member 5 are respectively rotated until the third abutment portion 402 abuts against the third upper limit portion, and the fourth abutment portion 502 abuts against the fourth upper limit portion, the third support surface 401 and the fourth support surface 501 are both on a horizontal plane, and both partially extend into the inner cavity 101. It can be understood that adding the third support member 4 and the fourth support member 5 to support the front subframe 10 can provide more support area and support points, thereby improving the stability of the front subframe 10. The working principles of the third support member 4 and the fourth support member 5 are the same as those of the first support member 2 and the second support member 3, so they will not be repeated.

[0032] Furthermore, a first lower limit portion and a third lower limit portion are provided on the side of the frame 1 where the first upper limit portion is located, and the first lower limit portion and the third lower limit portion are respectively located below the first upper limit portion and the third upper limit portion; a second lower limit portion and a fourth lower limit portion are also provided on the side of the frame 1 where the second upper limit portion is located, and the second lower limit portion and the fourth lower limit portion are respectively located below the second upper limit portion and the fourth upper limit portion; in the unloaded state, the first abutting portion 202 abuts against the first lower limit portion, the second abutting portion 302 abuts against the second lower limit portion, the third abutting portion 402 abuts against the third lower limit portion, and the fourth abutting portion 502 abuts against the fourth lower limit portion. It can be understood that the first lower limit portion limits the rotation of the first supporting member 2 by limiting the downward movement of the first abutting portion 202, thereby preventing the first supporting member 2 from continuing to rotate under external force in the unloaded state until it extends into the inner cavity 101 and interferes with the upward movement of the lower front subframe 10. The functions of the second lower limiting portion, the third lower limiting portion and the fourth lower limiting portion are the same as those of the first lower limiting portion.

[0033] Specifically, the frame 1 is provided with a first limiting groove 102, a second limiting groove 103, a third limiting groove 104, and a fourth limiting groove 105. The first upper limiting portion and the first lower limiting portion are respectively the top side and the bottom side of the inner wall of the first limiting groove 102; the second upper limiting portion and the second lower limiting portion are respectively the top side and the bottom side of the inner wall of the second limiting groove 103; the third upper limiting portion and the third lower limiting portion are respectively the top side and the bottom side of the inner wall of the third limiting groove 104; the fourth upper limiting portion and the fourth lower limiting portion are respectively the top side and the bottom side of the inner wall of the fourth limiting groove 105. The structure of each upper limiting portion and each lower limiting portion is relatively simple, which not only facilitates the processing of the logistics trolley, but also helps to reduce the weight of the logistics trolley.

[0034] Furthermore, the placement layer also includes a first support portion 106 and a second support portion 107 provided on the frame 1. The rotation axis of the first supporting member 2 is located between the first abutting portion 202 and the first support portion 106, and the rotation axis of the second supporting member 3 is located between the second abutting portion 302 and the second support portion 107. When the first abutting portion 202 abuts the top side of the inner wall of the first slot 102, the bottom surface of the first supporting member 2 abuts the first support portion 106. When the second abutting portion 302 abuts the top side of the inner wall of the second slot 103, the bottom surface of the second supporting member 3 abuts the second support portion 107. When the front subframe 10 is placed on the first supporting surface 201 of the first supporting member 2 and the second supporting surface 301 of the second supporting member 3, the first supporting portion 106 supports the bottom of the first supporting member 2, thereby reducing the bearing pressure of the first supporting member 2 and making the first supporting member 2 more stable on the frame 1. Similarly, the second supporting portion 107 can make the second supporting member 3 more stable on the frame 1 .

[0035] The working principle or workflow of this embodiment is as follows: the first supporting surface 201, the second supporting surface 301, the third supporting surface 401 and the fourth supporting surface 501 are all located on a vertical plane in an unloaded state and are all located outside the inner cavity 101 of the frame 1. The first abutting portion 202, the second abutting portion 302, the third abutting portion 402 and the fourth abutting portion 502 are respectively abutted against the bottom side of the first limiting groove 102, the bottom side of the second limiting groove 103, the bottom side of the third limiting groove 104 and the bottom side of the fourth limiting groove 105; when the front sub-frame 10 is placed in the inner cavity 101 and one side of the front sub-frame 10 is placed on the first supporting surface 201 and the third supporting surface 401, and the other When one side is placed on the second supporting surface 301 and the fourth supporting surface 501, the first supporting member 2 will rotate until the first abutting portion 202 abuts against the top side of the first limiting groove 102, so that the first supporting surface 201 remains in a horizontal state; the second supporting member 3 will rotate until the second abutting portion 302 abuts against the top side of the second limiting groove 103, so that the second supporting surface 301 remains in a horizontal state; the third supporting member 4 will rotate until the third abutting portion 402 abuts against the top side of the third limiting groove 104, so that the third supporting surface 401 remains in a horizontal state; the fourth supporting member 5 will rotate until the fourth abutting portion 502 abuts against the top side of the fourth limiting groove 105, so that the fourth supporting surface 501 remains in a horizontal state. When the front subframe 10 within the frame 1 needs to be transferred to the next production station, the top front subframe 10 is first grasped and moved upward to remove it from the frame 1. After the front subframe 10 is separated from the first supporting member 2, the second supporting member 3, the third supporting member 4, and the fourth supporting member 5, each supporting member will rotate out of the inner cavity 101 under its own weight. Then, the lower front subframe 10 can be removed from the inner cavity 101 of the frame 1. During the upward movement, the lower front subframe 10 will not be interfered with by the upper placement layer.

[0036] The beneficial effects of this embodiment are as follows: the logistics trolley is provided with multiple layers for placing the front sub-frame, and the storage and retrieval of the front sub-frames on each layer do not interfere with each other. A trolley can store multiple front sub-frames at the same time, which is beneficial to improving the transportation efficiency of the front sub-frames; the first supporting member, the second supporting member, the third supporting member and the fourth supporting member for supporting the front sub-frame can automatically rotate and reset to the outside of the inner cavity of the frame in an empty state, without manual reset, and the storage and retrieval of the front sub-frame are more flexible and convenient; the rotation angle ranges of the first supporting member, the second supporting member, the third supporting member and the fourth supporting member are respectively limited by the first limiting slot, the second limiting slot, the third limiting slot and the fourth limiting slot, and the load state and the empty state of each supporting member are fixed.

[0037] Example 2

[0038] This embodiment is based on the embodiment 1, combined with Figures 1 to 6As shown, the first supporting member 2 and the second supporting member 3 are respectively provided with a first slot 203 and a second slot 303 for accommodating the vehicle body connection ends of the front subframe 10. The first supporting surface 201 and the second supporting surface 301 are respectively located within the first slot 203 and the second slot 303. When placing the front subframe 10, the two vehicle body connection ends of the front subframe 10 are placed in the first slot 203 and the second slot 303, respectively. The first slot 203 and the second slot 303 further restrict the horizontal movement of the front subframe 10, thereby maintaining a more stable state of the front subframe 10.

[0039] Furthermore, a soft rubber layer 6 is provided on the inner wall of the first slot 203, the inner wall of the second slot 303, the third support surface 401, and the fourth support surface 501. The soft rubber layer 6 can cushion the collision and friction between the front sub-frame 10 and each support surface, thereby preventing the front sub-frame 10 from being worn and reducing the noise generated by the collision and friction between the front sub-frame 10 and each support surface.

[0040] Other features, working principles and beneficial effects of this embodiment are consistent with those of embodiment 1.

[0041] Example 3

[0042] This embodiment is based on embodiment 2. Figure 4 As shown, the bottom of the frame 1 is provided with four forklift openings 7. The forklift openings 7 can cooperate with the forks of a forklift, making it convenient for the forklift to transport and load and unload the logistics trolley.

[0043] Furthermore, a caster 8 is provided at each of the four top corners of the bottom of the frame 1. The casters 8 are provided to facilitate the movement of the logistics trolley, thereby improving the efficiency and flexibility of transportation.

[0044] Furthermore, a traction handle 9 is provided on one side of the frame 1. The traction handle 9 is provided to facilitate staff or other mechanical equipment to pull the logistics trolley.

[0045] Other features, working principles and beneficial effects of this embodiment are consistent with those of Example 2.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description, and it is not necessary and impossible to provide an exhaustive list of all implementation methods. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A logistics trolley for a front subframe of an automobile, comprising a frame (1) provided with an inner cavity (101), characterized in that: The frame (1) is provided with a plurality of placement layers distributed along the vertical direction for placing the front sub-frame, the placement layers each comprising a first supporting member (2) and a second supporting member (3) rotatably connected to opposite sides of the frame (1), the rotation axes of the first supporting member (2) and the second supporting member (3) being parallel to each other and both being parallel to the bottom surface of the frame (1), the first supporting member (2) and the second supporting member (3) being respectively provided with a first supporting surface (201) and a second supporting surface (301) for supporting the front sub-frame, and the first supporting member (2) and the second supporting member (3) being respectively provided with a first abutting portion (202) and a second abutting portion (302); The frame (1) is also provided with a first upper limit portion and a second upper limit portion on opposite sides; in an unloaded state, the first supporting surface (201) and the second supporting surface (301) are both on a vertical plane and the first supporting member (2) and the second supporting member (3) are both located outside the inner cavity (101); when the first supporting member (2) and the second supporting member (3) are respectively rotated until the first abutting portion (202) abuts against the first upper limit portion and the second abutting portion (302) abuts against the second upper limit portion, the first supporting surface (201) and the second supporting surface (301) are both on a horizontal plane and both at least partially extend into the inner cavity (101).

2. The logistics trolley of the front subframe of an automobile according to claim 1, characterized in that: The placement layer also includes a third supporting member (4) and a fourth supporting member (5) rotatably connected to opposite sides of the frame (1); the rotation axes of the third supporting member (4) and the fourth supporting member (5) are parallel to each other and to the bottom surface of the frame (1); the third supporting member (4) and the fourth supporting member (5) are respectively provided with a third supporting surface (401) and a fourth supporting surface (501) for supporting the front sub-frame; and the third supporting member (4) and the fourth supporting member (5) are respectively provided with a third abutting portion (402) and a fourth abutting portion (502); the frame (1) is also provided with a third supporting member (4) and a fourth supporting member (502) on opposite sides. an upper limit portion and a fourth upper limit portion; in a no-load state, the third support surface (401) and the fourth support surface (501) are both on a vertical plane and the third supporting member (4) and the fourth supporting member (5) are both located outside the inner cavity (101); when the third supporting member (4) and the fourth supporting member (5) are respectively rotated to the point where the third abutting portion (402) abuts against the third upper limit portion, and the fourth abutting portion (502) abuts against the fourth upper limit portion, the third support surface (401) and the fourth support surface (501) are both on a horizontal plane and both at least partially extend into the inner cavity (101).

3. The logistics trolley of the front subframe of an automobile according to claim 2, characterized in that: A first lower limit portion and a third lower limit portion are also provided on the side of the frame (1) where the first upper limit portion is located, and the first lower limit portion and the third lower limit portion are respectively located below the first upper limit portion and the third upper limit portion; a second lower limit portion and a fourth lower limit portion are also provided on the side of the second upper limit portion on the frame (1), and the second lower limit portion and the fourth lower limit portion are respectively located below the second upper limit portion and the fourth upper limit portion; in a no-load state, the first abutting portion (202) abuts against the first lower limit portion, the second abutting portion (302) abuts against the second lower limit portion, the third abutting portion (402) abuts against the third lower limit portion, and the fourth abutting portion (502) abuts against the fourth lower limit portion.

4. The logistics trolley of the front subframe of an automobile according to claim 3, characterized in that: The frame (1) is provided with a first limiting groove (102), a second limiting groove (103), a third limiting groove (104) and a fourth limiting groove (105); the first upper limiting portion and the first lower limiting portion are respectively the top side and the bottom side of the inner wall of the first limiting groove (102); the second upper limiting portion and the second lower limiting portion are respectively the top side and the bottom side of the inner wall of the second limiting groove (103); the third upper limiting portion and the third lower limiting portion are respectively the top side and the bottom side of the inner wall of the third limiting groove (104); the fourth upper limiting portion and the fourth lower limiting portion are respectively the top side and the bottom side of the inner wall of the fourth limiting groove (105).

5. The logistics trolley of the front subframe of an automobile according to claim 3, characterized in that: The placement layer also includes a first supporting portion (106) and a second supporting portion (107) arranged on the frame (1); the rotation axis of the first supporting member (2) is located between the first abutting portion (202) and the first supporting portion (106); the rotation axis of the second supporting member (3) is located between the second abutting portion (302) and the second supporting portion (107); when the first abutting portion (202) abuts against the first upper limit portion, the bottom surface of the first supporting member (2) abuts against the first supporting portion (106); when the second abutting portion (302) abuts against the second upper limit portion, the bottom surface of the second supporting member (3) abuts against the second supporting portion (107).

6. The logistics trolley of the front subframe of an automobile according to claim 2, characterized in that: The first supporting member (2) and the second supporting member (3) are respectively provided with a first card slot (203) and a second card slot (303) for accommodating a vehicle body connection end of the front sub-frame, and the first supporting surface (201) and the second supporting surface (301) are respectively located in the first card slot (203) and the second card slot (303).

7. The logistics trolley of the front subframe of an automobile according to claim 2, characterized in that: A soft rubber layer (6) is provided on the first supporting surface (201), the second supporting surface (301), the third supporting surface (401) and the fourth supporting surface (501).

8. The logistics trolley of the front subframe of an automobile according to claim 1, characterized in that: The bottom of the frame (1) is provided with a forklift opening (7).

9. A logistics trolley for a front subframe of an automobile according to any one of claims 1 to 8, characterized in that: The bottom of the frame (1) is provided with at least three casters (8) which are not in the same straight line.

10. The logistics trolley of the front subframe of an automobile according to claim 9, characterized in that: A traction handle (9) is provided on one side of the frame (1).

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