Anti-tilt type logistics trolley

Abstract

This invention provides an anti-tipping logistics trolley, comprising a sub-trolley and a mother trolley. The mother trolley is equipped with a track, and the sub-trolley is mounted on the track to travel to an external support rail connected to the track after transporting workpieces. The sub-trolley is equipped with a lifting platform and a fork mechanism. Through the cooperation of the lifting platform and the fork mechanism, the trolley extends to lift the workpiece when the telescopic assembly is in the first and second lifting states, avoiding interference between the trolley and the external environment, and more flexibly lifting the workpiece in both forward and reverse directions to achieve workpiece retrieval. During the operation of the telescopic assembly, a locking mechanism locks the sub-trolley onto the mother trolley. When picking up or placing workpieces, the center of gravity of the entire trolley is lowered to improve the stability of the entire trolley and effectively prevent tipping. When the telescopic assembly returns to the transfer state, the locking mechanism releases the lock between the sub-trolley and the mother trolley, ensuring that the sub-trolley slides on the track until it reaches the external support rail for unloading, achieving efficient workpiece retrieval and placement.

Description

Technical Field

[0001] This invention relates to the field of logistics transportation technology, and more specifically, to an anti-tipping logistics trolley. Background Technology

[0002] In the field of heavy structural component welding automation, logistics operations typically involve trolleys docking with various positioner stations, requiring bidirectional operation capabilities. When docking with beam-type positioners, loading must consider avoiding interference with the beam and other external environmental elements. A common practice is to rotate the beam to allow for loading, for example, with the beam on top and the automatic clamp opening facing downwards, allowing the trolley to lift the workpiece for clamping. However, this method has limited applicability and is highly restricted to complex workpiece support and positioning scenarios. Furthermore, if the support and positioning surface can only be the bottom plane, the workpiece must be moved horizontally onto the positioner, and existing trolley structures cannot pass through the positioner to complete the operation.

[0003] Furthermore, while it is relatively easy for vehicles to position and move small items, the larger the item, the more difficult the operation becomes. Although existing logistics vehicles can transport goods, they cannot automatically pick up and place heavy items, and may even overturn, affecting the daily use and safety of the vehicle. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide an anti-tipping logistics trolley to solve the above problems.

[0005] The present invention adopts the following solution:

[0006] This application provides an anti-tipping logistics trolley, including a sub-trolley and a mother trolley; the mother trolley is provided with a track, and the sub-trolley is installed on the track to travel to an external support rail connected to the track after transporting a workpiece; the sub-trolley is provided with a lifting platform and a fork mechanism, the lifting platform is configured as a scissor lift mounted on the sub-trolley, the fork mechanism includes a support platform configured on the scissor lift, and a telescopic assembly movably mounted on the support platform and a power unit for driving the telescopic assembly to extend horizontally to lift the workpiece; the telescopic assembly has a first lifting state extending in the forward direction, a second lifting state extending in the reverse direction, and a transfer state that is reset and stabilized on the support platform, the power unit being drively connected to the telescopic assembly to drive the telescopic assembly to freely switch states; it also includes a locking mechanism disposed between the mother trolley and the sub-trolley, the locking mechanism being configured to lock the sub-trolley on the mother trolley when the telescopic assembly is in the first lifting state or the second lifting state, and to release the locking of the sub-trolley on the mother trolley after the telescopic assembly transports the workpiece and switches to the transfer state.

[0007] As a further improvement, the locking mechanism includes a guide disposed on one of the mother car and the daughter car, and a magnetic chuck disposed on the other of the mother car and the daughter car, the guide being movable to contact or move away from the magnetic chuck in a vertical direction.

[0008] As a further improvement, the bottom of the subcarriage is provided with a movable plate, on which multiple guide members are regularly arranged. The movable plate is connected to a hydraulic cylinder, which drives the movable plate to move vertically, thereby abutting the guide members against the magnetic suction members on the mother car.

[0009] As a further improvement, the movable plate extends horizontally along the direction of movement perpendicular to the telescopic assembly, and the magnetic suction element is a magnet block, the length direction of which is consistent with the extension direction of the movable plate.

[0010] As a further improvement, the mother car includes a traveling wheel that slides on the main rail, and the daughter car includes a sliding wheel that is mounted on the rail. It is provided with two telescopic groups that are opposite each other on the support platform. Each of the telescopic groups is arranged on the same plane as the sliding wheel on the same side, and the traveling wheel is arranged directly below the sliding wheel, so that the traveling wheel and the sliding wheel are collinear with each other.

[0011] As a further improvement, the two telescopic groups share the same power unit, which includes a motor, a transmission component, and a lead screw. The telescopic group includes a plate mounted on the lead screw, which is slidably disposed on the lead screw to be controlled by the forward and reverse rotation of the motor, corresponding to extending forward or backward under the transmission of the lead screw.

[0012] As a further improvement, the extension length of the insert plate is equivalent to the length of the lead screw, and the length of the lead screw is equivalent to the length of the support platform.

[0013] As a further improvement, the insert plate is suitable for bearing a workpiece weighing more than five tons between the two, and the insert plate is supported and engaged with the bottom plane of the workpiece.

[0014] As a further improvement, the main rail is configured within the logistics park along a first direction, the track extends along a second direction, and the first and second directions are perpendicular to each other.

[0015] As a further improvement, the mother vehicle has a concave body, the track extends in a straight line inside the concave shape, and the daughter vehicle is adapted to be installed in the concave body, so that the mother vehicle and the daughter vehicle have an integrated logistics vehicle shape in appearance.

[0016] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0017] The anti-tipping logistics trolley of this application, through the coordinated operation of the lifting platform and the fork mechanism, extends to lift the workpiece when the telescopic assembly is in the first and second lifting states. This effectively avoids interference between the trolley and the external environment, and allows for more flexible lifting of workpieces in both forward and reverse directions to achieve workpiece retrieval. In particular, during the operation of the telescopic assembly, the locking mechanism locks the trolley onto the mother trolley, lowering the center of gravity of the entire trolley when picking up or placing workpieces, thereby improving the stability of the entire trolley and effectively preventing tipping. When the telescopic assembly returns to the transfer state, the locking mechanism releases the lock between the trolley and the mother trolley, ensuring that the trolley slides on the track until it reaches the external support rail for unloading, achieving efficient workpiece retrieval and placement. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the anti-tipping logistics trolley according to an embodiment of the present invention from a first-view perspective;

[0019] Figure 2 yes Figure 1 Disassembly diagram in the image;

[0020] Figure 3 This is a schematic diagram of the anti-tipping logistics trolley according to an embodiment of the present invention from a second perspective;

[0021] Figure 4 yes Figure 3 Disassembly diagram in the image;

[0022] Figure 5 This is a structural schematic diagram of the anti-tipping logistics trolley according to an embodiment of the present invention from a third-person perspective;

[0023] Figure 6 yes Figure 5 Cross-sectional view in the middle;

[0024] Figure 7 This is a structural schematic diagram of the anti-tipping logistics trolley according to an embodiment of the present invention from a fourth perspective, wherein the telescopic component in the lower figure is in a lifting state;

[0025] Figure 8 This is a schematic diagram of the anti-tipping logistics trolley according to an embodiment of the present invention from another perspective;

[0026] Figure 9 yes Figure 8 A schematic diagram of the telescopic assembly switching from the transport state to the lifting state;

[0027] Figure 10 This is a schematic diagram of the anti-tipping logistics trolley according to an embodiment of the present invention from other perspectives.

[0028] icon:

[0029] 1-Sub-cart; 2-Mother car; 3-Rail; 4-Lifting platform; 5-Forklift mechanism; 6-Support platform; 7-Telescopic assembly; 8-Power assembly; 9-Guide component; 10-Magnetic suction component; 11-Moving plate; 12-Hydraulic cylinder; 13-Walking wheel; 14-Sliding wheel; 15-Motor component; 16-Transmission component; 17-Lead screw component; 18-Insertion plate component. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Example

[0032] Combination Figures 1 to 10 This embodiment provides an anti-tipping logistics trolley, including a sub-trolley 1 and a mother trolley 2. The mother trolley 2 is provided with a track 3, and the sub-trolley 1 is installed on the track 3 to travel to an external support rail (not shown) connected to the track 3 after transporting a workpiece. The sub-trolley 1 is provided with a lifting platform 4 and a fork mechanism 5. The lifting platform 4 is configured as a scissor lift mounted on the sub-trolley 1. The fork mechanism 5 includes a support platform 6 configured on the scissor lift, and a telescopic assembly 7 movably arranged on the support platform 6 and a power unit 8 that drives the telescopic assembly 7 to extend horizontally to lift the workpiece. The telescopic assembly 7 has a first lifting state extending in the forward direction, a second lifting state extending in the reverse direction, and a transfer state that is reset and stabilized on the support platform 6. The power unit 8 is connected to the telescopic assembly 7 to drive the telescopic assembly 7 to freely switch states.

[0033] The logistics trolley also includes a locking mechanism installed between the mother car 2 and the daughter car 1. The locking mechanism is configured to lock the daughter car 1 onto the mother car 2 when the telescopic group 7 is in the first lifting state or the second lifting state, and to release the locking of the daughter car 1 onto the mother car 2 after the telescopic group 7 transports the workpiece and switches to the transfer state.

[0034] The aforementioned anti-tipping logistics trolley, through the coordinated operation of the lifting platform 4 and the fork mechanism 5, extends to lift the workpiece when the telescopic group 7 is in the first and second lifting states. This effectively prevents interference between the trolley and the external environment, allowing for more flexible lifting of workpieces in both forward and reverse directions. In particular, during operation, the telescopic group 7 uses a locking mechanism to lock the child trolley 1 onto the mother trolley 2. This lowers the trolley's center of gravity when picking up or placing workpieces, improving stability and effectively preventing tipping. When the telescopic group 7 returns to the transfer state, the locking mechanism releases the lock between the child trolley 1 and the mother trolley 2, allowing the child trolley 1 to slide on the track 3 until it reaches the external support rail for unloading, achieving efficient workpiece retrieval and placement.

[0035] like Figures 4 to 6 As shown, in this embodiment, the locking mechanism includes a guide member 9 disposed on one of the mother car 2 and the daughter car 1, and a magnetic suction member 10 disposed on the other of the mother car 2 and the daughter car 1. The guide member 9 is movable to contact or move away from the magnetic suction member 10 vertically. Thus, when the guide member 9 moves to contact the magnetic suction member 10, the daughter car 1 is locked onto the mother car 2; when the guide member 9 moves away from the magnetic suction member 10, the locking between the daughter car 1 and the mother car 2 is released, facilitating the movement of the daughter car 1 on the track 3.

[0036] Specifically, the bottom of the subcarriage 1 is provided with a movable plate 11, and multiple guide members 9 are regularly arranged on the movable plate 11. The movable plate 11 is connected to a hydraulic cylinder 12. The hydraulic cylinder 12 drives the movable plate 11 to move vertically, correspondingly abutting the guide members 9 against the magnetic suction member 10 on the mother car 2. The movable plate 11 extends horizontally along the direction of movement perpendicular to the telescopic assembly 7. The magnetic suction member 10 is a magnet block, and the length direction of the magnet block is consistent with the extension direction of the movable plate 11.

[0037] Obviously, the magnet can provide or demagnetize itself, or the guide 9 can be demagnetized directly by the hydraulic cylinder 12. Furthermore, magnets can be laid along the movement path of the sub-carriage 1 to lock the sub-carriage 1 to the mother car 2 at designated locations. Alternatively, magnets can be laid across the entire end face of the mother car 2 to lock the sub-carriage 1 to the mother car 2 at any time, allowing the sub-carriage 1 to move more flexibly on the mother car 2 and preventing it from tipping over.

[0038] In this embodiment, the mother car 2 includes traveling wheels 13 that slide on the main rail (not shown). The daughter car 1 includes sliding wheels 14 mounted on the track 3 and two telescopic groups 7 facing each other on the support platform 6. Each telescopic group 7 is arranged on the same plane as the sliding wheel 14 on the same side, and the traveling wheels 13 are positioned directly below the sliding wheels 14, so that the traveling wheels 13 and the sliding wheels 14 are collinear. It should be mentioned that the traveling wheels 13 serve as the overall moving support for the mother car 2, and the sliding wheels 14 serve as the overall moving support for the daughter car 1. On the one hand, configuring the telescopic groups 7 and the sliding wheels 14 on the same plane can effectively improve the stability and limiting of the telescopic groups 7 in two lifting states, allowing the daughter car 1 to perform a more stable material handling operation. On the other hand, the traveling wheels 13 of the mother car 2 and the sliding wheels 14 on the same side of the daughter car 1 are collinear, providing support and limiting in pairs, which can significantly reduce the vibration of the daughter car 1 when entering the external support rail due to accuracy issues such as height differences, ensuring the safety and service life of the entire vehicle.

[0039] In this embodiment, the two telescopic groups 7 share the same power group 8, which includes a motor 15, a transmission component 16, and a lead screw. Each telescopic group 7 includes a plate 18 mounted on the lead screw 17. The plate 18 is slidably disposed on the lead screw and is controlled by the forward and reverse rotation of the motor 15, corresponding to forward or reverse extension under the transmission of the lead screw. Thus, by driving the plate 18 via a ball screw assembly, the plate 18 can flexibly slide forward and backward in two opposite directions. It is worth noting that the power transmission from the transmission component 16 to the lead screw is prior art and will not be elaborated upon here. Alternatively, in other embodiments, the forward and reverse switching of the plate 18 can be directly achieved using a bidirectional direct-drive electric cylinder; this is not further limited here.

[0040] like Figures 7 to 10 As shown, in this embodiment, the telescopic length of the insert plate 18 is approximately equal to the length of the lead screw, and the length of the lead screw is approximately equal to the length of the support platform 6. Furthermore, the insert plate 18 is suitable for supporting workpieces weighing over five tons between the two, and the insert plate 18 engages with the bottom plane of the workpiece for support. Therefore, this logistics trolley is particularly effective for workpieces that can only be supported and lifted by their bottom plane, and the load-bearing capacity is more reasonable.

[0041] In this embodiment, the main rail is arranged along a first direction within the logistics park, and the track 3 extends along a second direction, with the first and second directions being perpendicular to each other. Clearly, the branch rail extends in the same direction as the track 3. Only when the mother car 2 moves along the main rail until the track 3 and the branch rail intersect can the unloading operation of the daughter car 1 be performed.

[0042] Furthermore, the mother vehicle 2 has a concave body, and the track 3 extends in a straight line within the concave interior. The daughter vehicle 1 is fitted and installed within the concave body, so that the mother vehicle 2 and daughter vehicle 1 appear as a single, integrated logistics vehicle. This significantly enhances the market competitiveness of the entire logistics vehicle, while also improving its cost-effectiveness and applicability.

[0043] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions that fall within the scope of the present invention are within the scope of protection of the present invention.

Claims

1. An anti-tipping logistics trolley, comprising a daughter trolley and a mother trolley; characterized in that, The mother car is equipped with a track, and the daughter car is mounted on the track to travel to an external support rail connected to the track after transporting the workpiece. The daughter car is equipped with a lifting platform and a fork mechanism. The lifting platform is configured as a scissor lift mounted on the daughter car. The fork mechanism includes a support platform mounted on the scissor lift, a telescopic assembly movably mounted on the support platform, and a power unit that drives the telescopic assembly to extend horizontally to lift the workpiece. The telescopic assembly has a first lifting state extending in the forward direction, a second lifting state extending in the reverse direction, and a transfer state where it is reset and stabilized on the support platform. The power unit is connected to the telescopic assembly to drive the telescopic assembly to freely switch between states; and, It also includes a locking mechanism disposed between the mother car and the daughter car, the locking mechanism being configured to lock the daughter car onto the mother car when the telescopic assembly is in the first lifting state or the second lifting state, and to release the locking of the daughter car onto the mother car after the telescopic assembly has transported the workpiece and switched to the transfer state.

2. The anti-tipping logistics trolley according to claim 1, characterized in that, The locking mechanism includes a guide member disposed on one of the mother car and the daughter car, and a magnetic suction member disposed on the other of the mother car and the daughter car, the guide member being movable to contact or move away from the magnetic suction member vertically.

3. The anti-tipping logistics trolley according to claim 2, characterized in that, The bottom of the subcarriage is provided with a movable plate, on which multiple guide components are regularly arranged. The movable plate is connected to a hydraulic cylinder, which drives the movable plate to move vertically, thereby abutting the guide components against the magnetic components on the mother car.

4. The anti-tipping logistics trolley according to claim 3, characterized in that, The movable plate extends horizontally along the direction of movement perpendicular to the telescopic assembly, and the magnetic suction element is a magnet block whose length direction is consistent with the extension direction of the movable plate.

5. The anti-tipping logistics trolley according to claim 1, characterized in that, The mother car includes wheels that slide on the main rail; The subcarriage includes a sliding wheel on a track and two telescopic groups opposite each other on a support platform. Each telescopic group is arranged on the same plane as the sliding wheel on the same side, and the traveling wheel is arranged directly below the sliding wheel so that the traveling wheel and the sliding wheel are collinear.

6. The anti-tipping logistics trolley according to claim 5, characterized in that, The two telescopic units share the same power unit, which includes a motor, a transmission component, and two lead screw components. The telescopic unit includes a plate component mounted on the lead screw component. The plate component is slidably arranged on the lead screw component to be controlled by the forward and reverse rotation of the motor component, corresponding to extending forward or backward under the transmission of the lead screw component.

7. The anti-tipping logistics trolley according to claim 6, characterized in that, The extension length of the insert plate is equivalent to the length of the lead screw, and the length of the lead screw is equivalent to the length of the support platform.

8. The anti-tipping logistics trolley according to claim 7, characterized in that, The insert plate is suitable for supporting a workpiece weighing more than five tons between the two, and the insert plate is engaged with the bottom plane of the workpiece.

9. The anti-tipping logistics trolley according to claim 5, characterized in that, The main rail is arranged in the logistics park along a first direction, and the track extends along a second direction, with the first and second directions being perpendicular to each other.

10. The anti-tipping logistics trolley according to claim 1, characterized in that, The mother vehicle has a concave body, and the track extends in a straight line inside the concave shape. The daughter vehicle is adapted to be installed in the concave body so that the mother vehicle and the daughter vehicle have an integrated logistics vehicle shape in appearance.

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