A double-length transport trolley

Abstract

The application discloses a double-length transport trolley which is easy to fold and unfold. The trolley comprises a front loading plate and a rear loading plate hinged to the front loading plate. Rollers are arranged on the front loading plate and the rear loading plate. A push handle is arranged on the rear loading plate. A plurality of tension springs are arranged in parallel between the front loading plate and the rear loading plate. The two ends of the tension springs are fixed to the front loading plate and the rear loading plate respectively. The front loading plate and the rear loading plate are arranged in the same height in the initial state. When the rear loading plate rotates towards the front loading plate, the tension springs can generate a pulling force to drive the front loading plate to overturn towards the rear loading plate. When the rear loading plate rotates to a certain angle, the bottom of the rear loading plate abuts against the front loading plate to limit the continuous relative rotation of the front loading plate and the rear loading plate. Fixing assemblies are arranged on the two sides of the front loading plate and the rear loading plate to fix the positions of the front loading plate and the rear loading plate.

Description

Technical Field

[0001] This application belongs to the technical field of fabric workshop transportation equipment, and in particular relates to an easily deployable double-length transport trolley. Background Technology

[0002] In material transportation in fabric workshops, conventional transport trolleys typically use a fixed-size body design. This makes it prone to causing long materials to dangle or drag on the ground due to insufficient length, posing safety hazards and potentially damaging the materials. To address this issue, some companies use extended vehicles, but these vehicles often have poor maneuverability, occupy a large area, and are limited in use in confined spaces. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this application provides a cleverly structured and easy-to-operate double-length transport trolley that can safely transport long materials while also being compatible with the transport of small materials. It is also convenient for storage, thus effectively solving the problem of the single function of transport trolleys.

[0004] To achieve the above objectives, this application adopts the following technical solution: an easily deployable double-length transport trolley, comprising a front loading plate and a rear loading plate hinged to the front loading plate, both the front and rear loading plates being provided with rollers, and the rear loading plate being provided with a push handle; a tension spring is provided between the front and rear loading plates, and multiple tension springs are arranged in parallel, with their ends respectively fixed to the front and rear loading plates; The front and rear plates are initially set at the same height. When the rear plate rotates toward the front plate, the tension spring can generate a pulling force to drive the front plate to flip toward the rear plate. When it rotates to a certain angle, the bottom of the rear plate will abut against the front plate to limit the front and rear plates from continuing to rotate relative to each other. The front and rear plates are provided with fixing components on both sides for fixing the positions of the front and rear plates.

[0005] Preferably, the front carrier plate has a front storage groove on the side facing the rear carrier plate, and the rear carrier plate has a rear storage groove on the side facing the front carrier plate. The front storage groove and the rear storage groove are connected one-to-one to form multiple storage spaces. When the front carrier plate and the rear carrier plate are initially at the same height, the tension spring is located in the storage space and is in a stretched state, with its two ends fixed to the groove walls of the front storage groove and the rear storage groove, respectively.

[0006] Preferably, when the front and rear plates are initially at the same height, the front and rear plates are in surface contact, and the normal direction of the mating surfaces of the front and rear plates is inclined upward towards the front plate.

[0007] Preferably, the fixing assembly includes a first bolt on the rear carrier plate, a positioning stud on the front carrier plate, a fixing nut threadedly engaged with the positioning stud, and a support rod. The support rod has a first fixing hole and a second fixing hole at both ends. The rear carrier plate has a first screw hole on each side. The first bolt passes through the first fixing hole and is threadedly engaged with the corresponding first screw hole. The front carrier plate has a set of two positioning studs on each side. When the front carrier plate and the rear carrier plate are in corresponding positions, the second fixing hole of the support rod is fitted onto the corresponding positioning stud, and the fixing nut and the positioning stud are threadedly engaged.

[0008] Preferably, the second fixing hole is an opening groove that opens to one side.

[0009] Preferably, the push handle includes a main push frame hinged to the rear carrier plate and an auxiliary push frame disposed on the main push frame. The main push frame and the auxiliary push frame are arranged at a certain angle, and the angle between the main push frame and the auxiliary push frame is not less than 90 degrees. A retraction groove is provided on the rear carrier plate, and the main push frame can be rotated into the retraction groove, at which time the auxiliary push frame is located above the main push frame. A limiting groove is provided on the side plane of the rear carrier plate away from the retraction groove, and the auxiliary push frame can be rotated into the limiting groove, at which time the main push frame is located above the rear carrier plate.

[0010] Preferably, the main pusher is provided with a first limiting hole, the auxiliary pusher is provided with a second limiting hole, and the rear plate is provided with a pin hole. A limiting pin is provided in the pin hole. When the main pusher rotates into the retracting groove or the auxiliary pusher rotates into the limiting groove, the limiting pin can pass through the pin hole and then pass into the first limiting hole or the second limiting hole to limit the working position of the pusher.

[0011] The technical effects of this application are as follows: 1. Through the hinged design of the front and rear carrier plates, and the synergistic effect of tension springs and fixing components, the trolley can easily switch between an unfolded, planar state and a vertically folded state. When unfolded, the two carrier plates form an extended, continuous carrying plane, providing full-length, stable support for long materials in the fabric workshop, completely avoiding the safety hazards and material damage risks caused by materials being suspended in the air or dragging on the ground when transporting long materials using traditional trolleys. When folded, the overall length of the trolley is significantly reduced, greatly saving passage space in narrow workshop aisles and storage space when not in use. This convertible capability allows a single trolley to flexibly adapt to various scenarios such as transporting long materials, handling small materials, and compact space storage, effectively solving the problem of low utilization rate of single-function transport trolleys.

[0012] 2. The tension spring, generated when the carrier plate rotates to a certain angle, assists in the automatic flipping of the rear carrier plate, making the folding operation effortless and smooth. When the carrier plate is in the unfolded working state, it is firmly locked by a fixing assembly consisting of support rods and fixing nuts, ensuring structural rigidity and stability during transportation. The push handle can be stored in the unfolding slot or the limiting slot, and the working position is fixed by the limiting pin. This design allows for structural switching between different working modes while further optimizing space utilization and ensuring ease of operation. This integrated design not only reduces storage space and facilitates the storage of the trolley, but also significantly improves operational safety by enhancing the structural stability of the trolley in various states; it also improves ease of operation, stability, and safety reliability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first structure of the front and rear carrier plates in the flipped state of this application.

[0014] Figure 2 This is a schematic diagram of the second structure of the front and rear carrier plates in the flipped state of this application.

[0015] Figure 3 This is a schematic diagram of the structure of the front and rear carrier plates in planar states.

[0016] The main technical features in the figure are labeled as follows: 1. Front carrier plate; 2. Rear carrier plate; 3. Roller; 4. Front storage slot; 5. Rear storage slot; 6. Tension spring; 7. First bolt; 8. Positioning stud; 9. Fixing nut; 10. Support rod; 11. Push handle; 12. Main push frame; 13. Secondary push frame; 14. Retraction slot; 15. Limiting slot; 16. First limiting hole; 17. Second limiting hole. Detailed Implementation

[0017] The present application will be further described below with reference to specific embodiments and accompanying drawings.

[0018] like Figures 1-3 As shown, an easily deployable double-length transport trolley includes a front platform 1 and a rear platform 2, which are hinged together. The end planes of the front platform 1 and the rear platform 2 facing each other are inclined downwards towards the rear platform 2, while the end planes of the rear platform 2 and the front platform 1 facing each other are inclined upwards towards the front platform 1. When the front platform 1 and the rear platform 2 are rotated to a planar state, the end planes of the front platform 1 and the rear platform 2 are in contact with each other, and surface interference is generated to limit further relative rotation. The bottom of the front platform 1 and the rear platform 2 are provided with four rollers 3, which are existing technology and can be one-way wheels or omnidirectional wheels. The mass of the front platform 1 is much greater than the sum of the masses of the push handle and the rear platform 2 to ensure that the trolley is not easily tipped over.

[0019] Furthermore, the front carrier plate 1 has two front storage slots 4 on the side facing the rear carrier plate 2, and the rear carrier plate 2 has two rear storage slots 5 on the side facing the front carrier plate 1. The front storage slots 4 and rear storage slots 5 are connected one-to-one to form two storage spaces. The storage spaces are distributed on both sides of the rear carrier plate 2. Tension springs 6 are provided in the storage spaces, and the number of tension springs 6 corresponds to the storage spaces. The two ends of the tension springs 6 are respectively fixed to the groove walls of the front storage slots 4 and the rear storage slots 5. When the front carrier plate 1 and the rear carrier plate 2 are initially at the same height, the tension springs 6 are located in the storage spaces and are in a stretched state, with their entire bodies located in the storage spaces. When the front carrier plate 1 and the rear carrier plate 2 are in a relatively perpendicular state, the bottom of the rear carrier plate 2 will abut against the front carrier plate 1, and the main body of the tension springs 6 is located above the storage spaces, forming a right-angled triangular structure with the rear carrier plate 2 and the front carrier plate 1.

[0020] Furthermore, the front carrier plate 1 and the rear carrier plate 2 are connected and fixed by a fixing assembly, which includes a first bolt 7, a positioning stud 8, a fixing nut 9, and a support rod 10. A set of fixing assemblies is provided on both sides of the front carrier plate 1 and the rear carrier plate 2. A first screw hole is provided on each side of the rear carrier plate 2. A first fixing hole and a second fixing hole are provided at both ends of the support rod 10, respectively. The first fixing hole is preferably a round hole, and the second fixing hole is preferably an opening slot that opens to one side to facilitate the positioning and installation of the support rod 10. The first bolt 7 passes through the first fixing hole and engages with the corresponding first screw hole to fix the support rod 10 to the rear carrier plate 2. Each side of the front carrier plate 1 is provided with a set of positioning studs 8, with two studs 8 in each set, to correspond to the two usage states of the front carrier plate 1 and the rear carrier plate 2. When the front carrier plate 1 and the rear carrier plate 2 are in the corresponding positions, the second fixing hole of the support rod 10 is sleeved on the corresponding positioning stud 8, and the fixing nut 9 engages with the positioning stud 8 to fix the support rod 10 to the front carrier plate 1.

[0021] Furthermore, a push handle 11 is provided on the side of the rear carrier plate 2 away from the front carrier plate 1. The push handle 11 includes a main push frame 12 and an auxiliary push frame 13. The main push frame 12 is hinged to the rear carrier plate 2, and the auxiliary push frame 13 is fixedly connected to it on the plane away from the rear carrier plate 2 near the hinge end. The main push frame 12 and the auxiliary push frame 13 are arranged perpendicularly. A retraction groove 14 is provided on the back side of the rear carrier plate 2. The main push frame 12 can be flipped into the retraction groove 14, and at this time the auxiliary push frame 13 is located above the main push frame 12, and the trolley can be pushed by the auxiliary push frame 13. A limiting groove 15 is provided on the plane of the rear carrier plate 2 away from the retraction groove 14. The auxiliary push frame 13 can be rotated into the limiting groove 15, and at this time the main push frame 12 is located above the rear carrier plate 2.

[0022] Furthermore, the main pusher 12 is provided with a first limiting hole 16, the auxiliary pusher 13 is provided with a second limiting hole 17, and the rear carrier plate 2 is provided with a pin hole on the root groove surface of the limiting groove 15. A limiting pin is provided in the pin hole. When the main pusher 12 rotates into the retracting groove 14 or the auxiliary pusher 13 rotates into the limiting groove 15, the limiting pin can pass through the pin hole and then pass into the first limiting hole 16 or the second limiting hole 17 to limit the working position of the push handle 11.

[0023] The specific implementation process of this utility model is as follows: When the front carrier plate 1 and the rear carrier plate 2 are in a plane-equivalent usage state, the main pusher 12 is locked by the fixing component and flipped to the top of the rear carrier plate 2. The trolley can be moved by pushing and pulling the main pusher 12. When the rear carrier plate 2 is flipped upward to a usage state perpendicular to the front carrier plate 1, the auxiliary pusher 13 is locked by the fixing component and flipped to the top of the rear carrier plate 2. The trolley can be moved by pushing and pulling the auxiliary pusher 13.

[0024] The above description is only a specific embodiment of this application, but the structural features of this application are not limited thereto. This application can be used on similar products. Any changes or modifications made by those skilled in the art within the scope of this application are covered by the patent scope of this application.

Claims

1. A retractable, double-length transport trolley, characterized in that: It includes a front carrier plate (1) and a rear carrier plate (2) hinged to the front carrier plate (1). Both the front carrier plate (1) and the rear carrier plate (2) are provided with rollers (3), and the rear carrier plate (2) is provided with a push handle (11). A tension spring (6) is provided between the front carrier plate (1) and the rear carrier plate (2). Multiple tension springs (6) are arranged in parallel, and their two ends are respectively fixed to the front carrier plate (1) and the rear carrier plate (2). The front plate (1) and the rear plate (2) are initially set at the same height. When the rear plate (2) rotates toward the front plate (1), the tension spring (6) can generate a pulling force to drive the front plate (1) to flip toward the rear plate (2). When it rotates to a certain angle, the bottom of the rear plate (2) will abut against the front plate (1) to limit the front plate (1) and the rear plate (2) from continuing to rotate relative to each other. The front carrier plate (1) and the rear carrier plate (2) are provided with fixing components on both sides for fixing the positions of the front carrier plate (1) and the rear carrier plate (2).

2. The easily deployable double-length transport trolley according to claim 1, characterized in that: The front carrier plate (1) has two front storage slots (4) on the side facing the rear carrier plate (2), and the rear carrier plate (2) has two rear storage slots (5) on the side facing the front carrier plate (1). The front storage slots (4) and rear storage slots (5) are connected one-to-one to form two storage spaces. The front storage slots (4) and rear storage slots (5) are connected one-to-one to form multiple storage spaces. When the front carrier plate (1) and the rear carrier plate (2) are initially at the same height, the tension spring (6) is located in the storage space and is in a stretched state, with its two ends fixed to the groove walls of the front storage slots (4) and the rear storage slots (5) respectively.

3. The easily deployable double-length transport trolley according to claim 1 or 2, characterized in that: When the front plate (1) and the rear plate (2) are in the initial equal height state, the front plate (1) and the rear plate (2) are in surface contact, and the normal direction of the joint surface of the front plate (1) and the rear plate (2) is inclined upward towards the front plate (1).

4. The easily deployable double-length transport trolley according to claim 1, characterized in that: The fixing assembly includes a first bolt (7) on the rear carrier plate (2), a positioning stud (8) on the front carrier plate (1), a fixing nut (9) threadedly engaged with the positioning stud (8), and a support rod (10). The two ends of the support rod (10) are respectively provided with a first fixing hole and a second fixing hole. The rear carrier plate (2) is provided with a first screw hole on each side. The first bolt (7) passes through the first fixing hole and is threadedly engaged with the corresponding first screw hole. The front carrier plate (1) is provided with a set of positioning studs (8) on each side. Each set of positioning studs (8) is provided with two. When the front carrier plate (1) and the rear carrier plate (2) are in the corresponding positions, the second fixing hole of the support rod (10) is sleeved on the corresponding positioning stud (8), and the fixing nut (9) and the positioning stud (8) are threadedly engaged.

5. The easily deployable double-length transport trolley according to claim 4, characterized in that: The second fixing hole is an opening groove that opens to one side.

6. The easily deployable double-length transport trolley according to claim 1, characterized in that: The push handle (11) includes a main push frame (12) hinged to the rear carrier plate (2) and an auxiliary push frame (13) disposed on the main push frame (12). The main push frame (12) and the auxiliary push frame (13) are arranged at a certain angle, and the angle between the main push frame (12) and the auxiliary push frame (13) is not less than 90 degrees. The rear carrier plate (2) is provided with a retraction groove (14). The main push frame (12) can be rotated into the retraction groove (14), and at this time the auxiliary push frame (13) is located above the main push frame (12). A limiting groove (15) is provided on the side plane of the rear carrier plate (2) away from the retraction groove (14). The auxiliary push frame (13) can be rotated into the limiting groove (15), and at this time the main push frame (12) is located above the rear carrier plate (2).

7. The easily deployable double-length transport trolley according to claim 6, characterized in that: The main pusher (12) is provided with a first limiting hole (16), the auxiliary pusher (13) is provided with a second limiting hole (17), and the rear carrier plate (2) is provided with a pin hole. A limiting pin is provided in the pin hole. When the main pusher (12) rotates into the retracting groove (14) or the auxiliary pusher (13) rotates into the limiting groove (15), the limiting pin can pass through the pin hole and then pass into the first limiting hole (16) or the second limiting hole (17) to limit the working position of the push handle (11).

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