Folding trolley

Abstract

The utility model discloses a folding type trolley which comprises a carrying plate A, a carrying plate B, hinges, inverted-L-shaped blocks, idler wheels, universal wheels, installation blocks and n-shaped pull rods, a groove A and a groove B are formed in the ends, close to each other, of the two sides of the carrying plate A and the carrying plate B respectively, and inner square inserting blocks A are fixedly installed in the two grooves A; inner square inserting blocks B are fixedly mounted in the two grooves B, direction inserting pins are movably inserted into the two inner square inserting blocks B, and one ends of the two direction inserting pins are movably inserted into the two inner square inserting blocks A respectively; the trolley is provided with the foldable structure, the foldable structure can divide the carrying plates into two parts to increase the number and the area of the carrying plates, so that the cargo carrying capacity of the trolley is effectively improved, meanwhile, the foldable structure is convenient for the trolley to move and store, and the practicability of the trolley is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the field of handcart technology, specifically a folding handcart. Background Technology

[0002] A handcart is a simple, human-powered transport tool, typically consisting of a frame, wheels, a carrying platform, and a handle, used for short-distance transport of heavy objects. Its design varies, with common types including two-wheeled handcarts, four-wheeled flatbed carts, and foldable portable carts, widely used in logistics warehousing, construction sites, supermarkets, and other scenarios. Through its wheel-axle mechanical structure, the handcart significantly reduces handling resistance and improves transport efficiency. Traditional handcarts consist of a small flatbed with four wheels at the bottom; this type of handcart is small in size and can carry limited loads. Therefore, to address these issues, a foldable handcart needs to be designed. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: A folding handcart, comprising a carrying plate A and a carrying plate B, wherein the length of carrying plate B is greater than the length of carrying plate A, and the bottoms of carrying plate A and carrying plate B are connected by hinges. Inverted L-shaped blocks are symmetrically fixedly installed at both ends of the bottom of carrying plate A on the side away from carrying plate B, and rollers are installed on one side of each of the two inverted L-shaped blocks. The two rollers are located on the outer sides of carrying plate A. Universal wheels are installed at both ends of the bottom of carrying plate B on the side away from carrying plate A. The top of carrying plate B... Mounting blocks are fixedly installed at both ends on the side away from the loading plate A. An n-shaped tie rod is rotatably installed between the two mounting blocks. Grooves A and B are respectively opened at the close ends of the loading plates A and B. An inner square insert A is fixedly installed inside the two grooves A. An inner square insert B aligned with the inner square insert A is fixedly installed inside the two grooves B. A directional pin is movably inserted into the interior of the two inner square inserts B. One end of the two directional pins is movably inserted into the interior of the two inner square inserts A.

[0004] Preferably, a pressing plate A is fixedly installed on the surface of each of the two directional pins located between the inner square insert A and the inner square insert B. A spring A is sleeved on the surface of each of the two directional pins located between the inner square insert A and the inner square insert B. The two ends of the spring A are fixedly connected to the pressing plate A and the inner square insert B, respectively. An L-shaped locking plate is fixedly installed on the end of each of the two directional pins away from the inner square insert A. A locking block matching the L-shaped locking plate is fixedly installed inside the two grooves A. This allows for effective folding of the carrier plate A and the carrier plate B and enables the carrier plate A and the carrier plate B to be stably unfolded for use.

[0005] Preferably, a slot is provided on the top of the carrier plate A near the side of the carrier plate B, and an arc-shaped slot is provided at the bottom of the slot. A card plate located inside the slot is fixedly installed on the side of the carrier plate B near the carrier plate A, and an arc-shaped insert plate that is movably inserted into the arc-shaped slot is fixedly installed at the bottom of the card plate, thereby effectively bearing the weight and avoiding damage to the hinge due to excessive weight.

[0006] Preferably, each of the two mounting blocks has two limiting holes on its surface. Sleeves are fixedly installed on the lower part of both sides of the n-shaped pull rod. Fixing pins that are inserted into the limiting holes are movably installed inside the two sleeves. A pressing plate B is fixedly installed on the lower part of each fixing pin. A spring B is sleeved on the surface of each fixing pin. The two ends of the spring B are fixedly connected to the pressing plate B and the sleeve, respectively.

[0007] Preferably, a cable is fixedly installed on the top of each of the two fixing pins, and an adjusting rod is rotatably installed on the upper part of the n-shaped tie rod. The two cables are fixed to the two ends of the adjusting rod, and a wheel is fixedly installed on both ends of the adjusting rod, so that the n-shaped tie rod can be effectively rotated and folded for adjustment.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: This handcart has a foldable structure, which can divide the carrying platform into two to increase the number and area of ​​the carrying platform, thereby effectively increasing the carrying capacity of the handcart. At the same time, the foldable structure also makes it easy to move and store the handcart, thereby effectively improving the practicality of the handcart. Furthermore, the foldable handcart has a simple structural design, and the folding and unfolding operation is convenient and easy to use. It is stable and reliable in use, and its performance can meet the needs of cargo transportation. Attached Figure Description

[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0010] In the attached diagram:

[0011] Figure 1 This is a schematic diagram of the folding handcart structure of this utility model;

[0012] Figure 2 This utility model Figure 1 A magnified structural diagram at point A;

[0013] Figure 3 This utility model Figure 2 A partial sectional view of the structure;

[0014] Figure 4 This is a schematic diagram of the folding of the carrier plate A and carrier plate B of this utility model;

[0015] Figure 5 This utility model Figure 1 A magnified structural diagram at point B;

[0016] Figure 6 This utility model Figure 5 A schematic diagram of the cross-sectional structure;

[0017] In the diagram: 1. Carrier plate A; 2. Carrier plate B; 3. Hinge; 4. Inverted L-shaped block; 5. Roller; 6. Caster wheel; 7. Mounting block; 8. N-shaped pull rod; 9. Groove A; 10. Groove B; 11. Inner square insert A; 12. Inner square insert B; 13. Directional pin; 14. Extrusion plate A; 15. Spring A; 16. L-shaped retaining plate; 17. Retaining block; 18. Retaining groove; 19. Arc-shaped slot; 20. Retaining plate; 21. Arc-shaped insert; 22. Limiting insertion hole; 23. Sleeve; 24. Fixing pin; 25. Extrusion plate B; 26. Spring B; 27. Cable; 28. Adjusting rod; 29. ​​Rotary wheel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Depend on Figures 1 to 6 The present invention includes a carrying plate A1 and a carrying plate B2. The length of carrying plate B2 is greater than the length of carrying plate A1. The bottoms of carrying plate A1 and carrying plate B2 are connected by a hinge 3. Inverted L-shaped blocks 4 are symmetrically fixedly installed at both ends of the bottom of carrying plate A1 away from carrying plate B2. Rollers 5 are installed on one side of each of the two inverted L-shaped blocks 4, and the two rollers 5 are located on the outer sides of carrying plate A1. Universal wheels 6 are installed at both ends of the bottom of carrying plate B2 away from carrying plate A1. The top of carrying plate B2 is fixedly fixed at both ends of the side away from carrying plate A1. Mounting blocks 7 are fixedly installed, and an n-shaped pull rod 8 is rotatably installed between the two mounting blocks 7. Grooves A9 and B10 are respectively opened at the close ends of the two sides of the carrying plate A1 and the carrying plate B2. An inner square insert A11 is fixedly installed inside the two grooves A9. An inner square insert B12 aligned with the inner square insert A11 is fixedly installed inside the two grooves B10. A directional pin 13 is movably inserted into the two inner square inserts B12. One end of the two directional pins 13 is movably inserted into the two inner square inserts A11.

[0020] A pressing plate A14 is fixedly installed on the surface of the two directional pins 13 located between the inner square inserts A11 and B12. A spring A15 is sleeved on the surface of the two directional pins 13 located between the inner square inserts A11 and B12. The two ends of the spring A15 are fixedly connected to the pressing plate A14 and the inner square insert B12, respectively. An L-shaped locking plate 16 is fixedly installed on the end of the two directional pins 13 away from the inner square insert A11. A locking block 17 matching the L-shaped locking plate 16 is fixedly installed inside the two grooves A9, so that the carrier plate A1 and the carrier plate B2 can be effectively folded and the carrier plate A1 and the carrier plate B2 can be stably unfolded for use.

[0021] A slot 18 is provided on the top of the loading plate A1 near the loading plate B2. An arc-shaped slot 19 is provided at the bottom of the slot 18. A card plate 20 is fixedly installed on the side of the loading plate B2 near the loading plate A1, which is located inside the slot 18. An arc-shaped insert plate 21 is fixedly installed at the bottom of the card plate 20 and is movably inserted into the arc-shaped slot 19. This can effectively bear the weight and prevent the hinge 3 from being damaged due to excessive weight.

[0022] Specifically, when the cargo trays A1 and B2 are unfolded for transporting goods, the goods placed on top of the cargo trays A1 and B2 will press down on the cargo trays A1 and B2. At this time, the pressure can be effectively transferred to the cargo trays A1 and B2 through the arc-shaped insert plate 21 and arc-shaped slot 19, as well as through the card plate 20 and card slot 18, thus avoiding damage to the hinge 3.

[0023] When it is necessary to fold the cargo plates A1 and B2, by moving the two L-shaped latches 16, the two directional pins 13 are moved, thereby allowing the two directional pins 13 to be processed from inside the two inner square blocks A11 and compressed by the compression plate A14 against the spring A15. Then, by rotating, the cargo plates A1 and B2 are folded so that the L-shaped latches 16 are located inside the groove A9. Then, by releasing the L-shaped latches 16, the elastic restoring force of the spring A15 will cause the L-shaped latches 16 to engage with the latch block 17, thus keeping the folded cargo plates A1 and B2 stable. The folding of the cargo plates A1 and B2 will cause the rollers 5 to be located outside the sides of the cargo plate B2, and after the cargo plates A1 and B2 are folded, the two universal wheels 6 will contact the ground for movement.

[0024] Two limiting holes 22 are provided on the surface of each of the two mounting blocks 7. Sleeves 23 are fixedly installed on the lower part of both sides of the n-shaped pull rod 8. Fixing pins 24, which are inserted into the limiting holes 22, are movably installed inside the two sleeves 23. Extrusion plates B25 are fixedly installed on the lower part of the fixing pins 24. Springs B26 are sleeved on the surface of the fixing pins 24. The two ends of the springs B26 are fixedly connected to the extrusion plates B25 and the sleeves 23, respectively. Pull cables 27 are fixedly installed on the top of the two fixing pins 24. Adjusting rods 28 are rotatably installed on the upper part of the n-shaped pull rod 8. The two pull cables 27 are fixed to the two ends of the adjusting rods 28, and rotating wheels 29 are fixedly installed on both ends of the adjusting rods 28, so that the n-shaped pull rod 8 can be effectively rotated and folded for adjustment.

[0025] Specifically, after the carrier plate A1 and carrier plate B2 are folded, the n-shaped pull rod 8 is rotated and folded again. By rotating one of the rotating wheels 29, the adjusting rod 28 is rotated. The rotation of the adjusting rod 28 will pull the cable 27 to rewind. After the cable 27 is rewinded, it will pull the fixing pin 24 to move upward, so that the fixing pin 24 is removed from the inside of the limiting hole 22 and the spring B26 is compressed by the compression plate B25.

[0026] Then, the n-shaped pull rod 8 can be rotated to keep it parallel to the carrying plate B2. The rotation of the n-shaped pull rod 8 will drive the fixing pin 24 to move. When the fixing pin 24 is aligned with another limiting hole 22, the elastic restoring force of the spring B26 will cause the fixing pin 24 to be inserted into the other limiting hole 22, so that the n-shaped pull rod 8 can be stably kept parallel to the carrying plate B2. Then, the carrying plate B2 and the two universal wheels 6 can move effectively. At the same time, the vertical trolley after folding and adjustment can effectively reduce the storage space occupied.

[0027] This handcart features a foldable structure, which allows the cargo tray to be divided into two, increasing the number and area of ​​the trays and thus effectively improving the handcart's carrying capacity. The foldable structure also facilitates the handcart's movement and storage, enhancing its practicality. Furthermore, this foldable handcart has a simple design, is easy to fold and unfold, and is stable and reliable in use. Its performance meets the needs of cargo transportation.

Claims

1. A folding handcart, comprising a carrying plate A (1) and a carrying plate B (2), wherein the length of the carrying plate B (2) is greater than the length of the carrying plate A (1), the bottoms of the carrying plate A (1) and the carrying plate B (2) are connected by a hinge (3), and inverted L-shaped blocks (4) are symmetrically fixedly installed at both ends of the bottom of the carrying plate A (1) away from the carrying plate B (2), and rollers (5) are installed on one side of each of the two inverted L-shaped blocks (4), the two rollers (5) being located on both sides of the carrying plate A (1), universal wheels (6) are installed at both ends of the bottom of the carrying plate B (2) away from the carrying plate A (1), and mounting blocks (7) are fixedly installed at both ends of the top of the carrying plate B (2) away from the carrying plate A (1), and an n-shaped pull rod (8) is rotatably installed between the two mounting blocks (7), characterized in that: The two sides of the carrier plate A (1) and the carrier plate B (2) are respectively provided with grooves A (9) and B (10) at their close ends. An inner square plug A (11) is fixedly installed inside the two grooves A (9), and an inner square plug B (12) aligned with the inner square plug A (11) is fixedly installed inside the two grooves B (10). A directional pin (13) is movably inserted into the two inner square plugs B (12), and one end of the two directional pins (13) is movably inserted into the two inner square plugs A (11).

2. A folding handcart according to claim 1, characterized in that: A pressing plate A (14) is fixedly installed on the surface of the two directional pins (13) located between the inner square insert A (11) and the inner square insert B (12). A spring A (15) is sleeved on the surface of the two directional pins (13) located between the inner square insert A (11) and the inner square insert B (12). The two ends of the spring A (15) are fixedly connected to the pressing plate A (14) and the inner square insert B (12) respectively. An L-shaped card plate (16) is fixedly installed on the end of the two directional pins (13) away from the inner square insert A (11). A card block (17) matching the L-shaped card plate (16) is fixedly installed inside the two grooves A (9).

3. A folding handcart according to claim 2, characterized in that: The top of the carrier plate A (1) is provided with a slot (18) on the side near the carrier plate B (2), and an arc-shaped slot (19) is provided at the bottom of the slot (18). A card plate (20) located inside the slot (18) is fixedly installed on the side of the carrier plate B (2) near the carrier plate A (1). An arc-shaped insert plate (21) that is movably inserted into the arc-shaped slot (19) is fixedly installed at the bottom of the card plate (20).

4. A folding handcart according to claim 1, characterized in that: Two limiting holes (22) are opened on the surface of the two mounting blocks (7). Sleeves (23) are fixedly installed on the lower part of both sides of the n-shaped pull rod (8). Fixing pins (24) inserted into the limiting holes (22) are movably installed inside the two sleeves (23). Extrusion plates B (25) are fixedly installed on the lower part of the fixing pins (24). Springs B (26) are sleeved on the surface of the fixing pins (24). The two ends of the springs B (26) are fixedly connected to the extrusion plates B (25) and the sleeves (23) respectively.

5. A folding handcart according to claim 4, characterized in that: The tops of the two fixing pins (24) are fixedly equipped with cables (27), and the upper part of the n-shaped tie rod (8) is rotatably equipped with an adjusting rod (28). The two cables (27) are fixed to the two ends of the adjusting rod (28), and the two ends of the adjusting rod (28) are fixedly equipped with wheels (29).

Images