A folding transport vehicle structure

Abstract

This utility model discloses a folding transport vehicle structure, including a support frame with a placement cavity. Several shelves are vertically spaced within the placement cavity, and each shelf is rotatably mounted on the support frame. A support portion is provided on the underside of each shelf to support and abut against adjacent shelves, ensuring the shelves are horizontal. A gas spring structure is hinged between each shelf and the support frame. The gas spring structure constrains the shelf to maintain its upward tilted state when it is flipped upwards relative to the support frame. A first locking member is provided on the support frame to prevent the shelves from moving. The support portion on the underside of each shelf directly abuts against adjacent shelves, forming a multi-point support structure, preventing the shelves from bending or tilting due to material weight and improving load-bearing reliability. The gas spring structure provides damping force when the shelves are flipped upwards, reducing the effort required for the flipping operation, and constrains the shelves to maintain their upward tilted state after flipping, eliminating the need for continuous manual lifting.

Description

Technical Field

[0001] This utility model specifically relates to a folding transport vehicle structure. Background Technology

[0002] Folding trolleys are widely used in workshop material handling, warehouse goods storage, and logistics sorting. Their core requirement is to reduce space occupation when not in use while ensuring load-bearing capacity. Existing folding trolleys have the following technical defects: most products' shelves are only connected to the support frame by simple pivots, lacking a reliable support structure when placed horizontally. When carrying materials, they are prone to tilting due to uneven stress, or even causing materials to slip off; moreover, after the shelves are flipped upwards, there is no dedicated restraint mechanism, making them susceptible to swinging down on their own due to vibration or external forces, posing a safety hazard; and the flipping process requires manual support of the shelves throughout, especially for multi-layer structures, which is labor-intensive and inefficient. Utility Model Content

[0003] In view of the defects of the existing technology, the technical problem to be solved by this utility model is to provide a folding operating vehicle structure. A folding transport vehicle structure includes a support frame with a placement cavity. Several shelves are arranged vertically at intervals within the placement cavity. The shelves are rotatably mounted on the support frame, and a support portion is provided on the lower side of each shelf to support and abut against adjacent shelves. The support portion supports the shelves to keep them in a horizontal state. A gas spring structure is hinged between each shelf and the support frame. The gas spring structure constrains the shelf to remain in an upward-flipped state when it is flipped upward relative to the support frame. A first locking member is provided on the support frame to lock the shelf movement.

[0004] In one embodiment, the first locking member includes a movable member movably disposed on the support frame, and a second locking member for locking the displacement of the movable member. One side of the support frame has dovetail guide grooves recessed vertically at intervals along the horizontal longitudinal direction. The movable member is movably disposed within the dovetail guide grooves so that it can reciprocate relative to the support frame along the longitudinal direction. The support frame has a plurality of first limiting shafts and a plurality of second limiting shafts spaced vertically at intervals. The plurality of first limiting shafts and the plurality of second limiting shafts are arranged alternately along the vertical direction. A limiting flange protrudes from one side of each shelf, and the limiting flange has a first abutment surface and a second abutment surface. When the shelf is horizontal relative to the support frame, the first abutment surface is the upper side of the limiting flange. The first limiting shaft can move with the movable member to press against the first abutment surface, preventing the shelf from flipping upwards relative to the support frame. When the shelf is flipped upward relative to the support frame and is in a stowed state, the second abutment surface is the lower side of the limiting flange. The second limiting shaft can move with the moving part so that it abuts against the second abutment surface, so that the shelf cannot be flipped downward relative to the support frame.

[0005] In one embodiment, the second locking member includes a limiting member that is movably disposed on one side of the support frame and located above the movable member. The lower side of the limiting member is respectively recessed with a first limiting groove and a second limiting groove that can be engaged with the movable member. When the movable member is located in the first limiting groove, the first limiting shaft remains in contact with the first contact surface. When the movable member is located in the second limiting groove, the second limiting shaft remains in contact with the second contact surface.

[0006] In one embodiment, a guide shaft is longitudinally spaced on one side of the support frame, and a vertical guide groove is provided on one side of the limiting member corresponding to the guide shaft. The guide shaft is movably disposed in the vertical guide groove, and a limiting nut is fitted at one end of the guide shaft through a threaded connection.

[0007] In one embodiment, the gas spring structure includes a first hinge, a second hinge, and a gas spring. The first hinge is hinged to a support frame, the gas spring is disposed on the first hinge, and the second hinge is disposed at the extension end of the gas spring. The second hinge is hinged to the shelf.

[0008] In one embodiment, the upper side of the shelf is provided with a plurality of through holes arranged in a rectangular array.

[0009] In one embodiment, the shelf has a plurality of recessed grooves on its upper side corresponding to the positions of the through holes.

[0010] In one embodiment, casters are provided at the four corners of the lower end of the support frame.

[0011] In one embodiment, a carrier plate is disposed on the support frame and located at the lower end of the placement cavity.

[0012] In summary, the advantages of this utility model over the prior art are: This utility model allows the support part on the lower side of the shelf to directly abut against the adjacent shelf, forming a multi-point support structure, which prevents the shelf from bending or tilting due to the weight of the materials and improves the load-bearing reliability; the gas spring structure can provide damping force when the shelf is flipped upward, reducing the flipping operation force, and at the same time, after flipping into place, it constrains the shelf to keep it in the flipped state, eliminating the need for continuous manual lifting and avoiding the safety risks caused by the shelf accidentally swinging down. Furthermore, the first locking component can specifically lock the shelf in its "horizontal working state" and "flipped-up storage state" to prevent the shelf from moving accidentally during transportation or storage, adapting to different usage scenarios; the shelf can be flipped up and folded, greatly reducing the vertical space occupied when the vehicle is idle, making it easier to stack other goods in the placement cavity for transportation. Attached Figure Description

[0013] Figure 1 This is one perspective view of a folding transport vehicle structure in one embodiment of the present utility model; Figure 2 This is one of the side views of a folding transport vehicle structure in one embodiment of the present invention; Figure 3 This is a second perspective view of a folding transport vehicle structure in one embodiment of the present utility model; Figure 4 This is a second side view of a folding transport vehicle structure in one embodiment of the present invention; Figure 5 This is the third perspective view of a folding transport vehicle structure in one embodiment of the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments: like Figures 1 to 5 The present invention preferably provides a folding trolley structure, including a support frame 1, a placement cavity 2, and a plurality of shelves 3 arranged vertically at intervals in the placement cavity 2. The shelves 3 are rotatably mounted on the support frame 1, and a support part 4 is provided on the lower side of the shelves 3 to support and abut against adjacent shelves 3. The shelves 3 are supported by the support part 4 to keep them in a horizontal state. A gas spring structure 5 is hinged between each shelf 3 and the support frame 1. The gas spring structure 5 constrains the shelves 3 to remain in an upward state when they are flipped upward relative to the support frame 1. A first locking member 6 is provided on the support frame 1 to lock the movement of the shelves 3.

[0015] Specifically, the support on the lower side of the shelf can directly abut against the adjacent shelf to form a multi-point support structure, which prevents the shelf from bending or tilting due to the weight of the materials and improves the load-bearing reliability; the gas spring structure can provide damping force when the shelf is flipped upward, reducing the force of the flipping operation, and at the same time, after the shelf is flipped into place, it can restrain the shelf to keep it in the flipped state, without the need for continuous manual lifting, thus avoiding the safety risks caused by the shelf accidentally swinging down. Furthermore, the first locking component can specifically lock the shelf in its "horizontal working state" and "flipped-up storage state" to prevent the shelf from moving accidentally during transportation or storage, adapting to different usage scenarios; the shelf can be flipped up and folded, greatly reducing the vertical space occupied when the vehicle is idle, making it easier to stack other goods in the placement cavity for transportation.

[0016] Further, the first locking member 6 includes a movable member 7 movably disposed on the support frame 1, and a second locking member 8 for locking the displacement of the movable member 7. The support frame 1 has dovetail guide grooves 9 recessed vertically along one side. The movable member 7 is movably disposed in the dovetail guide grooves 9 so that it can reciprocate relative to the support frame 1 along the longitudinal direction. The support frame 1 is provided with a plurality of first limiting shafts 10 and a plurality of second limiting shafts 11 at intervals along the vertical direction. The plurality of first limiting shafts 10 and the plurality of second limiting shafts 11 are arranged alternately in the vertical direction. A limiting flange 12 protrudes from one side of each shelf 3. The limiting flange 12 has a first abutting surface 13 and a second abutting surface 14. When the shelf 3 is in a horizontal state relative to the support frame 1, the first abutting surface 13 is the upper side of the limiting flange 12. The first limiting shaft 10 can move with the movable member 7 so that it abuts against the first abutting surface 13, so that the shelf 3 cannot be flipped upward relative to the support frame 1. When the shelf 3 is flipped upward relative to the support frame 1 and is in a stowed state, the second abutment surface 14 is the lower side of the limiting flange 12, and the second limiting shaft 11 can move with the moving part 7 to abut against the second abutment surface 14, so that the shelf 3 cannot be flipped downward relative to the support frame 1.

[0017] Specifically, when the shelf is horizontal, the first contact surface of the limiting flange faces upward; the moving part is pushed to move along the dovetail guide groove toward the shelf until the first limiting shaft presses against the first contact surface. At this time, the shelf is blocked by the first limiting shaft and cannot be flipped upward. Storage state locking: After the shelf is flipped up, the second abutment surface of the limiting flange faces down; then push the moving part to move the second limiting shaft below the second abutment surface and abut it, the shelf is supported by the second limiting shaft and cannot swing down; State switching: The position switching of the first and second limit axes is achieved by the reciprocating movement of the moving part along the dovetail guide groove, which can adapt to the two states of the shelf locking, and the dovetail guide groove can prevent the moving part from falling off or shifting.

[0018] like Figure 5 As shown, before the shelf is flipped and switched, the movable part can be moved away from the limiting flange along the dovetail guide groove to facilitate the flipping and switching of the shelf.

[0019] Furthermore, the second locking member 8 includes a limiting member 15 that is movably disposed on one side of the support frame 1 and located above the moving member 7. The lower side of the limiting member 15 is respectively recessed with a first limiting groove 16 and a second limiting groove 17 that can be engaged with the moving member 7. When the moving member 7 is located in the first limiting groove 16, the first limiting shaft 10 remains in contact with the first contact surface 13. When the moving member 7 is located in the second limiting groove 17, the second limiting shaft 11 remains in contact with the second contact surface 14.

[0020] Specifically, the first position of the fixed moving part is: the limiting part is lifted upward, and when the moving part is pushed to the first limiting shaft abutting the first abutting surface, the first limiting groove is aligned with the upper protrusion of the moving part; the limiting part is released, and it falls under the action of gravity, the first limiting groove is engaged with the moving part, restricting the lateral movement of the moving part and maintaining the abutting state of the first limiting shaft; Fixing the moving part to the second position: After lifting the limiting member again and pushing the moving part to the second position, that is, when the moving part is pushed to the second limiting shaft abutting the second abutting surface, release the limiting member so that the second limiting groove fits into the moving part, thereby fixing the moving part; Unlocking and switching: Lifting the limit piece upwards will disengage it from the moving piece. At this point, the moving piece can be pushed to switch positions. The operation is convenient and the locking is reliable.

[0021] Furthermore, the support frame 1 has guide shafts 18 spaced longitudinally on one side, and the limiting member 15 has a vertical guide groove 19 through the guide shafts 18 on one side. The guide shafts 18 are movably disposed in the vertical guide groove 19, and a limiting nut (not shown in the figure) is fitted at one end of the guide shafts 18 by a threaded connection.

[0022] Specifically, when the limiting component moves up and down, the vertical guide groove slides along the guide shaft, restricting the limiting component to move only vertically and preventing it from shifting laterally or longitudinally, ensuring that the limiting groove can be accurately aligned with the moving component; the limiting nut at one end of the guide shaft forms a clamping structure with the support frame column, which can prevent the limiting component from falling off the guide shaft, while not affecting the normal up and down sliding of the limiting component, thus improving the stability of the mechanism.

[0023] Furthermore, the gas spring structure 5 includes a first hinge 51, a second hinge 52, and a gas spring 53. The first hinge 51 is hinged to the support frame 1, the gas spring 53 is disposed on the first hinge 51, and the second hinge 52 is disposed at the telescopic end of the gas spring 53. The second hinge 52 is hinged to the shelf 3. Specifically, the hinge structure of the first and second hinges allows the angle of the gas spring to be adjusted as the shelf rotates, preventing damage to the gas spring due to forced force and extending its service life.

[0024] Furthermore, the upper side of the shelf 3 is provided with a plurality of through holes 54 evenly distributed in a rectangular array. Specifically, the through holes can reduce the weight of the shelf, and for humid environments or materials that are prone to liquid accumulation (such as cleaned parts), the through holes can enable ventilation from top to bottom of the shelf, accelerating the drying of the materials; at the same time, the accumulated liquid can be discharged through the through holes, avoiding accumulation on the shelf panel that could lead to material corrosion or contamination; and the through holes can also be used to position and place parts with shafts.

[0025] Furthermore, the shelf 3 has several recessed grooves on its upper side corresponding to the positions of the through holes 54. These grooves reduce friction between the rotor components when they are placed within the through holes, preventing them from falling off.

[0026] Furthermore, casters are provided at the four corners of the lower end of the support frame 1. The casters can turn freely 360°, allowing the transport vehicle to flexibly adjust its direction in narrow spaces (such as workshop aisles and warehouse shelf gaps), reducing the turning radius and improving transfer efficiency.

[0027] Furthermore, a carrier plate 55 is provided on the support frame 1 and located at the lower end of the placement cavity 2. The carrier plate is directly connected to the main frame of the support frame, and has a stronger load-bearing capacity than the upper rotating shelf, making it suitable for placing heavier materials.

[0028] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A folding transport vehicle structure, comprising a support frame (1), wherein the support frame (1) has a placement cavity (2), and a plurality of shelves (3) are arranged vertically at intervals within the placement cavity (2), characterized in that: The shelf (3) is rotatably mounted on the support frame (1), and a support part (4) is provided on the lower side of the shelf (3) to support and abut against the adjacent shelf (3). The shelf (3) is supported by the support part (4) to keep it in a horizontal state. A gas spring structure (5) is hinged between each shelf (3) and the support frame (1). The gas spring structure (5) constrains the shelf (3) to remain in an upward state when the shelf (3) flips upward relative to the support frame (1). A first locking member (6) is provided on the support frame (1) to lock the shelf (3) from moving.

2. The folding transport vehicle structure according to claim 1, characterized in that: The first locking member (6) includes a movable member (7) movably disposed on the support frame (1) and a second locking member (8) for locking the displacement of the movable member (7). The support frame (1) has dovetail guide grooves (9) recessed vertically along the horizontal longitudinal direction on one side. The movable member (7) is movably disposed in the dovetail guide grooves (9) so that it can reciprocate relative to the support frame (1) along the longitudinal direction. The support frame (1) is provided with a plurality of first limiting shafts (10) and a plurality of second limiting shafts (11) at intervals along the vertical direction. The plurality of first limiting shafts (10) and the plurality of second limiting shafts (11) are arranged alternately along the vertical direction. A limiting flange (12) protrudes outward on one side of each layer of the frame (3). The limiting flange (12) has a first abutment surface (13) and a second abutment surface (14). When the shelf (3) is in a horizontal state relative to the support frame (1), the first abutting surface (13) is the upper side of the limiting flange (12), and the first limiting shaft (10) can move with the moving part (7) to press against the first abutting surface (13), so that the shelf (3) cannot flip upward relative to the support frame (1); when the shelf (3) is flipped upward relative to the support frame (1) and is in a stored state, the second abutting surface (14) is the lower side of the limiting flange (12), and the second limiting shaft (11) can move with the moving part (7) to abut against the second abutting surface (14), so that the shelf (3) cannot flip downward relative to the support frame (1).

3. The folding transport vehicle structure according to claim 2, characterized in that: The second locking member (8) includes a limiting member (15) that is movably disposed on one side of the support frame (1) and located above the moving member (7). The lower side of the limiting member (15) is respectively recessed with a first limiting groove (16) and a second limiting groove (17) that can be fitted with the moving member (7). When the moving member (7) is located in the first limiting groove (16), the first limiting shaft (10) remains in contact with the first contact surface (13). When the moving member (7) is located in the second limiting groove (17), the second limiting shaft (11) remains in contact with the second contact surface (14).

4. The folding transport vehicle structure according to claim 3, characterized in that: The support frame (1) has guide shafts (18) spaced longitudinally on one side. The limiting member (15) has a vertical guide groove (19) through it on one side corresponding to the guide shaft (18). The guide shaft (18) is movably disposed in the vertical guide groove (19), and a limiting nut is fitted at one end of the guide shaft (18) through a threaded connection.

5. The folding transport vehicle structure according to claim 1, characterized in that: The gas spring structure (5) includes a first hinge (51), a second hinge (52), and a gas spring (53). The first hinge (51) is hinged to the support frame (1), the gas spring (53) is disposed on the first hinge (51), the second hinge (52) is disposed at the telescopic end of the gas spring (53), and the second hinge (52) is hinged to the shelf (3).

6. The folding transport vehicle structure according to claim 1, characterized in that: The shelf (3) has several through holes (54) evenly distributed in a rectangular array on its upper side.

7. The folding transport vehicle structure according to claim 1, characterized in that: The shelf (3) has several recessed grooves on its upper side, corresponding to the position of the through hole (54).

8. The folding transport vehicle structure according to claim 1, characterized in that: The support frame (1) is equipped with casters at the four corners of its lower end.

9. The folding transport vehicle structure according to claim 1, characterized in that: A carrier plate (55) is provided on the support frame (1) and located at the lower end of the placement cavity (2).

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