Electric flat carriage with expandable bearing surface

Abstract

The electric flat carriage capable of expanding the bearing surface comprises a carriage body and a bearing plate used for bearing goods, the bearing plate is provided with a width expanding assembly and a length expanding assembly, the width expanding assembly is hinged to the bearing plate, and the length expanding assembly is connected with the bearing plate in a sliding mode. Through the design of the hinged type width expanding assembly plate and the sliding type length expanding assembly, synchronous expanding of the width and the length of the bearing face is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric flatbed carts with expandable load-bearing surfaces, and specifically relates to an electric flatbed cart with expandable load-bearing surfaces. Background Technology

[0002] In modern industrial production and logistics transportation, electric flatbed carts are widely used as efficient transportation tools. Currently, most electric flatbed carts' expansion structures can only achieve expansion in one direction. For example, Chinese patent CN221213692U discloses a load-bearing surface expansion structure for electric flatbed carts, which achieves unilateral expansion through a sliding mechanism. However, when dealing with goods with special length-to-width ratios, it cannot simultaneously adjust the bidirectional dimensions of the load-bearing surface, resulting in low space utilization and even requiring batch transportation, thus affecting operational efficiency. Therefore, there is a need for an electric flatbed cart that can expand its load-bearing surface in both directions. Utility Model Content

[0003] This invention provides an electric flatbed cart with an expandable load-bearing surface to solve at least one of the above-mentioned technical problems.

[0004] The technical solution adopted by this utility model is: an electric flatbed cart with an expandable bearing surface, including a cart body and a bearing plate for carrying goods, wherein the bearing plate has a width expansion component and a length expansion component, and the width expansion component includes a first width plate and a second width plate hinged to both sides of the bearing plate;

[0005] The length extension component includes a sliding groove extending along the length direction of the support plate and a length extension plate that is connected in conjunction with the sliding groove.

[0006] The bearing plate has a first connector, and the first width plate and the second width plate have a second connector that rotatably engages with the first connector. The first connector has a fixing protrusion, and the second connector has a fixing groove that engages with the fixing protrusion.

[0007] The first width plate and the second width plate have support grooves formed on the side away from the bearing plate, and a support frame is rotatably connected in the support grooves;

[0008] Multiple sets of permanent magnets are embedded inside the sliding groove, and the length extension plate is provided with an iron slider that cooperates with the permanent magnets.

[0009] Preferably, the support frame has a magnetic suction part, and the support groove has a magnetic suction element that cooperates with the magnetic suction part.

[0010] Preferably, the first width plate and the second width plate have a fixing groove on the side facing away from the support plate, the fixing groove has a locking rod that moves along the axial direction of the fixing groove, and the support plate has a fixing hole that cooperates with the locking rod.

[0011] Preferably, the length extension plate has multiple locking grooves on both sides that cooperate with the locking rod.

[0012] Preferably, the locking rod has a limiting member extending radially along the locking rod, and the first width plate and the second width plate have a plurality of limiting grooves that cooperate with the limiting member.

[0013] Preferably, either end of the locking rod has an external thread, and the length extension plate has a threaded groove that mates with the external thread.

[0014] Due to the adoption of the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0015] 1. This utility model can quickly expand the bearing surface from the length and width directions of the bearing plate by hinged first width expansion plate and second width expansion plate to both sides of the bearing plate, and slidingly connecting length expansion plate to the bottom of the bearing plate.

[0016] 2. In a preferred embodiment of the present invention, the bearing plate has a first connector, and the first width plate and the second width plate have a second connector that is rotatably connected to the first connector. By cooperating with the fixing protrusions and fixing slots on the first connector and the second connector, the first width plate and the second width plate can be rotated and folded along the wide edge of the bearing plate to completely fit the surface of the bearing plate, and maintain a compact size when it is not necessary to expand the bearing surface.

[0017] 3. As a preferred embodiment of this utility model, the first width plate and the second width plate have support grooves for accommodating the support frame. The support grooves are rotatably connected to the support frame. This foldable design ensures that the surfaces of the first width plate and the second width plate are flat and the layout is compact when the first width plate and the second width plate are not unfolded. On the other hand, when the first width plate and the second width plate are unfolded, the support frame also unfolds from the support groove, which can assist in supporting the first width plate and the second width plate and better carry the goods.

[0018] In addition, magnetic components are provided in the support slot, and magnetic parts that cooperate with the magnetic components are provided on the support frame. On the one hand, when the width extension component is not unfolded, it is easy for the support frame to be stored in the support slot. On the other hand, when the width extension component is unfolded, it is attracted and fixed by the magnetic parts and magnetic components, thus stabilizing the vertical support force.

[0019] 4. In a preferred embodiment of this utility model, the first width plate and the second width plate are provided with fixing grooves, in which the locking rod can move axially along the fixing groove. The bearing plate is also provided with fixing holes that cooperate with the locking rod. When the first width plate and the second width plate are unfolded, the locking rod is inserted into the fixing hole along the axial direction of the fixing groove, so that the first width plate and the second width plate are connected to the bearing plate, thereby distributing the load of the first width plate and the second width plate.

[0020] The locking rod can also pass through the fixing hole of the bearing plate and be further inserted into the locking groove of the length extension plate. The locking rod can connect the first width plate, the bearing plate and the length extension plate at the same time to form a synchronous lock, which distributes the concentrated load to the entire bearing surface.

[0021] In addition, the locking rod can be equipped with a limiting member. A limiting groove is set on the basis of the fixed groove, so that when the locking rod moves along the axial direction of the fixed groove, the limiting member can be placed in the appropriate limiting groove, thereby further fixing the relative position of the locking rod with the first width plate and the second width plate.

[0022] 5. As a preferred embodiment of this utility model, when it is not necessary to extend the bearing surface, the locking rod can be inserted into the locking groove of the length extension plate, similar to a load-bearing beam in a building, to distribute the load on the bearing surface; when only the length extension plate is extended, the locking rod is first inserted into the locking hole and then into the locking groove, which can fix the relative position of the length extension plate and the bearing plate, playing a role similar to a limit switch, and the relative position of the length extension plate and the bearing plate can be adjusted according to the load-bearing situation.

[0023] 6. In a preferred embodiment of this utility model, one end of the locking rod may be provided with an external thread, and the lower part of the length extension plate is provided with a threaded groove. When the length extension plate is unfolded, the locking rod can be inserted into the threaded groove so that the locking rod assists in supporting the length extension plate.

[0024] 7. In a preferred embodiment of this utility model, multiple sets of permanent magnets are embedded in the inner side of the sliding groove, and iron sliders are set at the corresponding positions of the length extension plate. When the length extension plate is unfolded, the permanent magnets attract the iron sliders by magnetic force, reducing sliding resistance and preventing the length extension plate from accidentally falling out, thus helping to fix the relative position of the length extension plate and the support plate. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0026] Figure 1 This is a schematic diagram of the electric flatbed cart structure with an expandable load-bearing surface according to an embodiment of the present utility model;

[0027] Figure 2 This is a schematic diagram of the hinged connection between the first connecting member and the second connecting member in an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram showing the locking rod cooperating with the first width plate and the bearing plate in an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the locking rod and locking groove in an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the cooperation between the permanent magnet and the iron slider in an embodiment of this utility model.

[0031] Figure Labels

[0032] 1. Vehicle body;

[0033] 2. Support plate;

[0034] 3. Width extension component; 31. First width plate; 32. Second width plate; 311. Support groove; 312. Support frame; 311a. Magnetic suction component; 312b. Magnetic suction part;

[0035] 4. Length extension component; 41. Sliding groove; 42. Length extension plate;

[0036] 51. First connecting piece; 52. Second connecting piece; 53. Fixing protrusion; 54. Fixing slot; 55. Pin;

[0037] 6. Locking rod; 61. Fixing groove; 62. Fixing hole; 63. Locking groove; 601. External thread; 602. Threaded groove; 64. Limiting component; 65. Limiting groove;

[0038] 71. Permanent magnet; 72. Iron slider. Detailed Implementation

[0039] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0040] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0041] Furthermore, it should be understood in the description of this utility model that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "aspect," or "specific example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0044] Example 1

[0045] like Figure 1 As shown, an electric flatbed cart with an expandable load-bearing surface includes a cart body 1 and a load-bearing plate 2 for carrying goods. A first width plate 31 and a second width plate 32 are hinged to both sides of the load-bearing plate 2, respectively. A sliding groove 41 is connected to the inner side of the lower part of the load-bearing plate 2, and a length extension plate 42 is connected to the load-bearing plate 2 through the sliding groove 41. When the load-bearing surface is not expanded, the width extension component 3 is above the load-bearing plate 2, the length extension component 4 is below it, and the cart body 1 is below the length extension component 4. When it is necessary to expand the load-bearing surface, the first width plate 31 and the second width plate 32 are rotated open from the middle of the load-bearing plate 2 along its wide edge, and the length extension plate 42 is pulled out from below the load-bearing plate 2.

[0046] Example 2

[0047] like Figure 1, Figure 2 As shown, an electric flatbed cart with an expandable bearing surface, differing from Embodiment 1, has a first connecting member 51 fixedly connected to the bearing plate 2, and a second connecting member 52 fixedly connected to a first width plate 31 and a second width plate 32. The size of the fixing protrusion 53 on the first connecting member 51 matches the size of the fixing slot 54 on the second connecting member 52. A pin 55 passes through the fixing protrusion 53 of the first connecting member 51 and the fixing slot 54 of the second connecting member 52 in sequence, causing the first connecting member 51 and the second connecting member 52 to rotate around the connecting shaft 55. The axis of the connecting shaft 55 is parallel to the wide side of the bearing plate 2, thereby driving the first width plate 31 and the second width plate 32 to rotate and unfold along the wide side of the bearing plate 2.

[0048] Example 3

[0049] like Figure 1 As shown, an electric flatbed cart with an expandable bearing surface, different from Embodiment 1, has a support groove 311 on the side of the first width plate 31 and the second width plate 32 away from the bearing plate 2. A support frame 312 is rotatably connected in the support groove 311. When the first width plate 31 and the second width plate 32 are not unfolded, the outer surface of the support frame 312 coincides with the first width plate 31 and the second width plate 32. When the first width plate 31 and the second width plate 32 are unfolded to a position parallel to the bearing plate 2, the support frame 312 rotates out from the support groove 311 to assist in supporting the first width plate 31 and the second width plate 32.

[0050] In addition, magnetic suction components 311a can be provided on both sides of the bracket groove 311, and magnetic suction parts 312b can be provided on both sides of the support frame 312. The magnetic suction components 311a attract the magnetic suction parts 312b by magnetic force. When the width expansion component 3 is not unfolded, the support frame 312 is fixed in the bracket groove 311; when the width expansion component 3 is unfolded, it helps to stably support the first width plate 31 and the second width plate 32.

[0051] Example 4

[0052] like Figure 1 , Figure 3As shown, an electric flatbed cart with an expandable bearing surface, differing from Embodiment 1, has a fixing groove 61 on the side of the first width plate 31 and the second width plate 32 facing away from the bearing plate 2. A locking rod 6 can move axially along the fixing groove 61. Fixing holes 62 are provided on both sides of the bearing plate 2, with the diameter of the fixing holes 62 matching the diameter of the locking rod 6. The length and thickness of the first width plate 31 and the second width plate 32 are the same as the length and thickness of the bearing plate 2. The fixing groove 61 is positioned on the thickness surface of the first width plate 31 and the second width plate 32, and the fixing holes 62 are positioned on the thickness surfaces of both sides of the bearing plate. First, the locking rod 6 is inserted into the fixing groove 61. Then, the first width plate 31 and the second width plate 32 are unfolded to a position parallel to the bearing plate 2. At this point, the fixing groove 61 and the fixing hole 62 are directly opposite each other, allowing the locking rod 6 to move from the fixing groove 61 into the fixing hole 62, thereby connecting the first width plate 31 to the bearing plate 2.

[0053] like Figure 3 As shown, the locking rod 6 can be provided with a limiting member 64 in the radial direction, and multiple limiting grooves 65 with the same size as the limiting member 64 are provided at the corresponding radial positions of the fixing groove 61. When the locking rod 6 is initially inserted into the fixing groove 61, the axial direction of the limiting member 64 is perpendicular to the axial direction of the fixing groove 61. When the locking rod 6 moves in the fixing groove 61 toward the bearing plate 2, the limiting member 64 can move radially along the locking rod 6 and can be inserted into the limiting groove 65, so that the locking rod 6 no longer moves in the fixing groove 61, and further fixes the positions of the first width plate 31, the second width plate 32 and the bearing plate 2.

[0054] Furthermore, when the length extension plate 42 is provided with a locking groove 63 with the same diameter as the locking hole 62, the locking rod 6 can move further into the locking groove. This allows the locking rod 6 to simultaneously connect the first width plate 31, the bearing plate 2, and the length extension plate 42, forming a synchronous lock and distributing the concentrated load to the entire bearing surface.

[0055] The locking rod 6 can also be inserted into the locking slot 63 alone, similar to a load-bearing beam in a building, to distribute the load on the bearing surface; or the locking rod 6 can be inserted into the locking slot 63 after passing through the locking hole 62. In this case, the locking rod 6 can fix the relative position of the length extension plate 42 and the bearing plate 2.

[0056] Example 5

[0057] like Figure 1 , Figure 4 As shown, an electric flatbed cart with an expandable bearing surface, different from embodiment 4, has an external thread 601 at one end of the locking rod 6, and a threaded groove 602 with the same diameter as the locking rod is provided below the length extension plate 42. When the length extension plate 42 is unfolded, the external thread 601 of the locking rod 6 can be connected with the threaded groove 602. At this time, the locking rod 6 is similar to the function of a support leg, used to support the length extension plate 42.

[0058] Example 6

[0059] like Figure 1 , Figure 5 As shown, an electric flatbed cart with an expandable bearing surface, differing from Embodiment 1, has multiple sets of permanent magnets 71 embedded inside the sliding groove 41. The permanent magnets 71 are spaced apart along the length of the sliding groove 41, forming multiple fixed adsorption points. Iron sliders 72 are fixed on both sides of the length extension plate 42, with the number and position of the iron sliders 72 corresponding to the permanent magnets 71. When the length extension plate 42 slides to the target position, the iron sliders 72 are attracted by the magnetic field of the permanent magnets 71, generating normal magnetic attraction and tangential friction, thereby fixing the length extension plate 42 in the current position. When the position of the length extension plate 42 needs to be adjusted, an external force can be applied to overcome the magnetic attraction and friction, causing the iron sliders 72 to detach from the current permanent magnet 71 and move along the sliding groove 41 to the next target position. After reaching the new position, the iron sliders 72 are attracted by the adjacent permanent magnets 71 and re-fixed.

[0060] For any parts not mentioned in this utility model, existing technologies can be used or referenced.

[0061] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0062] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. An electric flatbed cart with an expandable load-bearing surface, comprising a cart body and a load-bearing plate for carrying goods, characterized in that, The support plate has a width expansion component and a length expansion component. The width expansion component includes a first width plate and a second width plate hinged to both sides of the support plate. The length extension component includes a sliding groove extending along the length direction of the support plate and a length extension plate that is connected in conjunction with the sliding groove. The bearing plate has a first connector, and the first width plate and the second width plate have a second connector that rotatably engages with the first connector. The first connector has a fixing protrusion, and the second connector has a fixing groove that engages with the fixing protrusion. The first width plate and the second width plate have support grooves formed on the side away from the bearing plate, and a support frame is rotatably connected in the support grooves; Multiple sets of permanent magnets are embedded inside the sliding groove, and the length extension plate is provided with an iron slider that cooperates with the permanent magnets.

2. The electric flatbed cart with an expandable load-bearing surface according to claim 1, characterized in that, The support frame has a magnetic suction part, and the support groove has a magnetic suction element that cooperates with the magnetic suction part.

3. The electric flatbed cart with an expandable load-bearing surface according to claim 1, characterized in that, The first width plate and the second width plate have a fixing groove on the side facing away from the support plate. The fixing groove has a locking rod that moves along the axial direction of the fixing groove. The support plate has a fixing hole that cooperates with the locking rod.

4. The electric flatbed cart with an expandable load-bearing surface according to claim 3, characterized in that, The length extension plate has multiple locking grooves on both sides that cooperate with the locking rod.

5. An electric flatbed cart with an expandable load-bearing surface according to claim 3, characterized in that, The locking rod has a limiting member extending radially along the locking rod, and the first width plate and the second width plate have a plurality of limiting grooves that cooperate with the limiting member.

6. An electric flatbed cart with an expandable load-bearing surface according to claim 4, characterized in that, The locking rod has an external thread at one end, and the length extension plate has a threaded groove that mates with the external thread.

Images