A flatbed vehicle capable of crossing thresholds or obstacles

Abstract

This utility model relates to the field of material handling equipment technology, and in particular to a flatbed truck capable of crossing thresholds or obstacles. It includes a flatbed truck body, with a push handle fixedly connected to the upper right side of the flatbed truck body. Eight moving devices are arranged at the lower end of the flatbed truck body. Each moving device includes a mounting base with a first recessed opening at its lower end. A connecting component is rotatably connected within the mounting base, and a tension spring is fixedly connected to the right side of the connecting component. A wear-resistant layer is fixedly connected to the outer surface of each moving wheel. The mounting base is fixedly connected to the lower end of the flatbed truck body. This utility model provides a flatbed truck capable of crossing thresholds or obstacles. Through its foldable wheels and symmetrical distribution design, the flatbed truck can efficiently cross thresholds and other obstacles without manual lifting. Simultaneously, the wear-resistant layer and balanced structure reduce equipment wear and the risk of tipping over, ensuring stable transport of goods.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, and in particular to a flatbed truck that can pass over thresholds or obstacles. Background Technology

[0002] While traditional flatbed trucks are convenient and efficient for transporting goods on flat roads, they have significant drawbacks when facing thresholds or other obstacles. Firstly, when transporting heavy loads, flatbed trucks encounter high thresholds, such as those common at warehouse entrances or interior doors of older buildings, or obstacles caused by construction or uneven ground. Because their wheels and structure are fixed, they cannot flexibly adjust their posture, making the crossing process extremely difficult. For example, in daily warehouse cargo transfers, workers often spend considerable time and effort trying various methods because flatbed trucks cannot easily cross thresholds, severely impacting cargo handling efficiency. Secondly, forcibly pushing traditional flatbed trucks over thresholds or obstacles can easily damage both the truck itself and the threshold. Thresholds or obstacles exert significant impact on the truck's wheels and frame; over time, this accelerates wheel wear and may deform the frame, greatly shortening the flatbed truck's lifespan. Therefore, a flatbed truck capable of crossing thresholds or obstacles needs to be designed to solve these problems. Utility Model Content

[0003] The main purpose of this utility model is to provide a flatbed vehicle that can pass through thresholds or obstacles, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A flatbed vehicle capable of passing thresholds or obstacles includes a flatbed vehicle body, a push handle fixedly connected to the upper right side of the flatbed vehicle body, and eight moving devices provided at the lower end of the flatbed vehicle body.

[0006] The mobile device includes a mounting base with a first lower groove at its lower end. A connecting component is rotatably connected inside the mounting base. A tension spring is fixedly connected to the right side of the connecting component. A handle is inserted into the front end of the connecting component. A fixing sheath is fixedly connected to the right rear end of the handle. A moving wheel is rotatably connected inside the connecting component. A first rotating shaft is inserted through the middle of the front end of the moving wheel. A wear-resistant layer is fixedly connected to the outer surface of the moving wheel. The mounting base is fixedly connected to the lower end of the flatbed vehicle body.

[0007] Preferably, the connecting component includes a connecting block, a second rotating shaft is inserted and connected to the upper front end of the connecting block, a first locking hole is opened on the left front end of the connecting block, a second locking hole is opened in the middle front end of the connecting block, a wheel seat is fixedly connected to the lower end of the connecting block, a second lower groove is opened in the middle lower end of the wheel seat, a circular groove is opened on the opposite groove surface of the second lower groove, a short round handle is provided on the right front end of the wheel seat, and the second rotating shaft of the connecting block is rotatably connected in the first lower groove.

[0008] Preferably, the eight mobile devices are arranged in two rows and four columns at the lower end of the flatbed vehicle. The eight mobile devices are divided into front and rear groups. The two rows of mobile devices in the front group are arranged near the front end of the flatbed vehicle, and the two rows of mobile devices in the rear group are arranged near the rear end of the flatbed vehicle. The two mobile devices in the front row are equipped with casters.

[0009] Preferably, the flatbed vehicle body is rectangular flat.

[0010] Preferably, the second rotating shaft of the connecting block can rotate within the first lower groove, and the rotation angle range of the connecting block can meet the folding and retraction actions of the moving wheel. One end of the tension spring is fixed to the right side of the connecting block and the other end is fixed to the lower side of the flatbed vehicle body to assist the repositioning of the moving wheel after folding or retraction.

[0011] Preferably, the handle is connected to the connecting component. When the handle is pulled, the connecting component can be rotated to fold or retract the moving wheel. The fixing sheath can be locked with the first locking hole or the second locking hole to fix the moving wheel in the folded or retracted state.

[0012] Preferably, the wear-resistant layer completely covers the outer circumferential surface of the moving wheel, and the wear-resistant layer and the moving wheel are tightly and fixedly connected.

[0013] Preferably, the second lower groove is formed at the lower end of the wheel seat with the groove opening facing downwards.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. In this utility model, eight moving devices are symmetrically distributed in two rows and four columns at the lower end of the flatbed vehicle. When encountering a high threshold, the worker can pull the handle at the front end of the connecting component, so that the connecting block rotates in the first lower groove through the second rotating shaft, folding the first and third sets of moving wheels. Then, the fixed sheath and the first locking hole are used to lock the flatbed vehicle. The second and fourth sets of moving wheels support the flatbed vehicle. After the first set of moving wheels crosses the threshold, the tension spring resets and the second set of moving wheels is folded. By following this process, the obstacle can be crossed smoothly without the need for manual lifting of the flatbed vehicle, which significantly improves the convenience and efficiency of crossing thresholds or obstacles.

[0016] 2. In this utility model, the wear-resistant layer tightly covering the outer surface of the moving wheel can effectively resist friction and impact during the contact and rolling process between the wheel and the edge of the threshold, reducing wheel wear. At the same time, the symmetrical distribution design of the eight moving devices can ensure that the weight of the flatbed is evenly distributed to each wheel when the flatbed crosses the threshold or obstacle, maintaining good balance and avoiding tipping due to the shift of the center of gravity. This protects the structure of the flatbed itself and reduces the risk of damage to the threshold or obstacle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a flatbed vehicle that can pass over thresholds or obstacles according to this utility model.

[0018] Figure 2 This is a schematic diagram of the moving device structure of a flatbed cart that can pass over thresholds or obstacles according to the present invention.

[0019] Figure 3 This is a schematic diagram of the connecting component structure of a flatbed vehicle that can pass through thresholds or obstacles according to this utility model;

[0020] Figure 4 This is an enlarged structural diagram showing the details of section A of the flatbed vehicle of this utility model, which can pass over thresholds or obstacles.

[0021] In the diagram: 1. Flatbed vehicle body; 2. Push handle; 3. Moving device; 31. Mounting base; 32. First lower groove; 33. Connecting assembly; 34. Handle; 35. Fixing sheath; 36. Moving wheel; 37. First pivot; 38. Wear-resistant layer; 39. Tension spring; 331. Wheel seat; 332. Second lower groove; 333. Circular groove; 334. Connecting block; 335. First locking hole; 336. Second locking hole; 337. Second pivot; 338. Short round handle. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] Please see Figure 1-4 This utility model provides a technical solution:

[0026] A flatbed cart capable of traversing thresholds or obstacles includes a flatbed body 1. A push handle 2 is fixedly connected to the upper right side of the flatbed body 1. Eight moving devices 3 are provided at the lower end of the flatbed body 1. Each moving device 3 includes a mounting base 31. The lower end of the mounting base 31 has a first lower groove 32. A connecting component 33 is rotatably connected inside the mounting base 31. A tension spring 39 is fixedly connected to the right side of the connecting component 33. After the state of the moving wheel 36 changes, the tension spring 39 can quickly and automatically reset the moving wheel 36 to the normal driving state through its own elastic tension, eliminating the need for manual and laborious reset by the user. This improves the convenience and efficiency of using the flatbed cart and ensures that the moving wheel 36 can quickly return to the correct position after each use, guaranteeing the subsequent transportation work. To ensure smooth operation, in scenarios involving frequent crossing of thresholds or obstacles, the tension spring 39 can quickly reset the moving wheel 36, saving operation time and improving overall work efficiency. A handle 34 is inserted into the front end of the connecting component 33, and a fixing sheath 35 is fixedly connected to the right rear end of the handle 34. A moving wheel 36 is rotatably connected inside the connecting component 33. A first rotating shaft 37 is inserted through the middle of the front end of the moving wheel 36. A wear-resistant layer 38 is fixedly connected to the outer surface of the moving wheel 36. The mounting base 31 is fixedly connected to the lower end of the flatbed vehicle body 1. The connecting component 33 includes a connecting block 334, with a second rotating shaft 337 inserted through the upper front end of the connecting block 334. A first locking hole 335 is opened on the left front end of the connecting block 334, and a second locking hole 335 is opened on the middle front end of the connecting block 334. Locking hole 336, wheel seat 331 is fixedly connected to the lower end of connecting block 334. The lower end of wheel seat 331 has a second lower groove 332 in the middle. The opposite groove surface of the second lower groove 332 has a circular groove 333. A short round handle 338 is provided on the right side of the front end of wheel seat 331. The second rotating shaft 337 of connecting block 334 is rotatably connected in the first lower groove 32. Eight moving devices 3 are distributed in two rows and four columns at the lower end of flatbed body 1. The eight moving devices 3 are divided into front and rear groups. The two rows of moving devices in the front group are arranged close to the front end of flatbed body 1, and the two rows of moving devices in the rear group are arranged close to the rear end of flatbed body 1. The two rows of moving devices are "distributed outward" along the width direction of the vehicle body, which is equivalent to increasing the lateral support width of the vehicle body. This design can significantly improve the lateral resistance of the vehicle body. The vehicle's tilting capability, especially when turning, on inclined surfaces, or carrying unevenly loaded goods, reduces the risk of tipping over due to a shift in the center of gravity. The two front-mounted movable devices are equipped with omnidirectional wheels, which, in conjunction with the fixed rear wheels, allow for more flexible steering. The flatbed body 1 is rectangular. The second pivot 337 of the connecting block 334 can rotate within the first lower groove 32, and the rotation angle range of the connecting block 334 is sufficient to allow the movable wheels 36 to fold and retract. One end of the tension spring 39 is fixed to the right side of the connecting block 334, and the other end is fixed to the lower side of the flatbed body 1, assisting the movable wheels 36 in resetting after folding or retracting. The handle 34 is connected to the connecting assembly 33 via a plug-in connection. When the handle 34 is pulled...The connecting component 33 can be rotated to fold or retract the movable wheel 36. The fixing sheath 35 can engage with the first locking hole 335 or the second locking hole 336 to lock the movable wheel 36 in its folded or retracted state. The locking mechanism of the fixing sheath 35 with the first locking hole 335 or the second locking hole 336 provides a reliable guarantee for the stable maintenance of the movable wheel 36. The second lower groove 332 is formed at the lower end of the wheel seat 331 with the groove opening facing downwards.

[0027] The above solution addresses a high threshold between a warehouse and a transport corridor, where warehouse staff routinely use flatbed carts to transport goods. Taking the transport of approximately 300 kg of packaged goods as an example, the solution illustrates the process of using a flatbed cart to overcome the threshold or obstacle. First, the staff pushes the flatbed cart next to the goods. Utilizing the rectangular, flat, and stable platform of the flatbed cart (1), the boxes are neatly stacked on it. Thanks to the good mechanical stability of the rectangular structure, the goods are placed stably without slipping or becoming unstable. Then, the staff grasps the push handle (2) vertically fixed to the upper right side of the flatbed cart (1). Because the push handle 2 is ergonomically designed, the arm naturally exerts force when pushing, easily pushing the flatbed cart loaded with goods to the threshold. Upon reaching the threshold, the worker begins to operate the moving device 3. First, pull the handle 34 inserted at the front end of the connecting component 33, causing the connecting component 33 to rotate. At this time, the second rotating shaft 337 of the connecting block 334 rotates flexibly in the first lower groove 32, folding the first and third sets of moving wheels 36. During this process, the short round handle 338 on the right front end of the wheel seat 331 also provides an additional force point for operation, facilitating quick adjustment of the wheel status. After folding, insert the fixing sheath 35 on the right rear end of the handle 34 into the connecting... The first locking hole 335 on the left front end of the connecting block 334 keeps the moving wheels 36 stably in the folded state. At this time, the flatbed is supported by the second and fourth sets of moving wheels 36. Then, the staff pushes the flatbed. Due to the wear-resistant layer 38 tightly covering the outer surface of the moving wheels 36, the wheels effectively resist friction and impact during contact and rolling with the edge of the threshold, reducing wear. After the first set of moving wheels 36 crosses the threshold, the handle 34 is pulled to fold the first set of moving wheels 36 back. The elastic tension of the tension spring 39 on the right side of the connecting component 33 assists the moving wheels 36 to quickly return to their original position. After returning to their original position, the second set of moving wheels 36 is folded. The fixed sheath 35 is locked in conjunction with the second locking hole 336, and the flatbed is pushed to complete the first half of the journey. Following the same operation procedure, the third set of moving wheels 36 are folded back, and the fourth set of moving wheels 36 are folded and locked. Finally, the flatbed is pulled smoothly over the threshold. During this process, the eight moving devices 3, which are symmetrically distributed in two rows and four columns, always ensure that the weight of the flatbed is evenly distributed to each wheel under different wheel support conditions, maintaining good balance and effectively avoiding the risk of tipping over due to the shift of the center of gravity. After the threshold is reached, the staff folds all the moving wheels 36 back to their initial state, and the tension spring 39 automatically resets them, preparing for the next transport.

[0028] It should be noted that this utility model is a flatbed cart capable of passing thresholds or obstacles. The flatbed cart body 1 is rectangular, and its wide and stable load-bearing platform is used to place various goods. The good mechanical stability of the rectangular structure ensures that the goods are placed stably during transportation. The push handle 2 fixed on the upper right side of the flatbed cart body 1 is ergonomically designed for easy pushing by the user. Eight moving devices 3 are set at the lower end of the flatbed cart body 1, which are arranged in two rows and four columns, divided into front and rear groups. The two rows of moving devices 3 in the front group are arranged near the front end of the flatbed cart body 1, and the two rows of moving devices in the rear group are arranged near the rear end of the flatbed cart body. They are symmetrically distributed outward along the width direction, which can evenly distribute the weight of the flatbed cart to each wheel, reduce wheel wear, enhance driving stability, and reduce the risk of tipping over. When encountering a threshold or obstacle, the handle 34 inserted at the front end of the connecting component 33 is pulled, and the second rotating shaft 337 of the connecting block 334 is recessed at the first lower opening. Rotating within the groove 32 causes the movable wheel 36 to fold. The short round handle 338 at the front right of the wheel seat 331 provides an additional force point for operation. After folding, insert the fixing sheath 35 at the rear right of the handle 34 into the first locking hole 335 at the front left of the connecting block 334 or the second locking hole 336 at the front center, keeping the movable wheel 36 folded. At this time, the flatbed is supported by the folded movable wheel 36. When pushing the flatbed, the wear-resistant layer 38 tightly covered on the outer surface of the movable wheel 36 can resist friction and impact during contact with the edge of the threshold and during rolling, reducing wear. After the folded movable wheel 36 crosses the threshold, pull the handle 34 again. The tension spring 39 on the right side of the connecting component 33 assists the movable wheel 36 to quickly return to its original position through elastic tension. After returning to its original position, fold or fold back the other movable wheels 36 according to the same operation procedure, so that the flatbed can smoothly cross the threshold or obstacle.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. 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 claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flatbed vehicle capable of crossing thresholds or obstacles, comprising a flatbed vehicle body (1), characterized in that: A push handle (2) is fixedly connected to the upper right side of the flatbed vehicle body (1), and eight moving devices (3) are provided at the lower end of the flatbed vehicle body (1). The mobile device (3) includes a mounting base (31), the lower end of which has a first lower groove (32). A connecting component (33) is rotatably connected inside the mounting base (31). A tension spring (39) is fixedly connected to the right side of the connecting component (33). A handle (34) is inserted into the front end of the connecting component (33). A fixing sheath (35) is fixedly connected to the right rear end of the handle (34). A moving wheel (36) is rotatably connected inside the connecting component (33). A first rotating shaft (37) is inserted through the middle of the front end of the moving wheel (36). A wear-resistant layer (38) is fixedly connected to the outer surface of the moving wheel (36). The mounting base (31) is fixedly connected to the lower end of the flatbed vehicle body (1).

2. A flatbed cart capable of crossing thresholds or obstacles according to claim 1, characterized in that: The connecting component (33) includes a connecting block (334). A second rotating shaft (337) is inserted into the upper front end of the connecting block (334). A first locking hole (335) is opened on the left side of the front end of the connecting block (334). A second locking hole (336) is opened in the middle of the front end of the connecting block (334). A wheel seat (331) is fixedly connected to the lower end of the connecting block (334). A second lower groove (332) is opened in the middle of the lower end of the wheel seat (331). A circular groove (333) is opened on the opposite groove surface of the second lower groove (332). A short round handle (338) is provided on the right side of the front end of the wheel seat (331). The connecting block (334) and the second rotating shaft (337) are rotatably connected in the first lower groove (32).

3. A flatbed cart capable of crossing thresholds or obstacles according to claim 1, characterized in that: The eight mobile devices (3) are arranged in two rows and four columns at the lower end of the flatbed vehicle (1). The eight mobile devices (3) are divided into front and rear groups. The two rows of mobile devices (3) in the front group are arranged close to the front end of the flatbed vehicle (1), and the two rows of mobile devices (3) in the rear group are arranged close to the rear end of the flatbed vehicle (1). The two mobile devices (3) in the front row are equipped with casters.

4. A flatbed cart capable of crossing thresholds or obstacles according to claim 1, characterized in that: The flatbed vehicle body (1) is rectangular flat.

5. A flatbed cart capable of crossing thresholds or obstacles according to claim 2, characterized in that: The connecting block (334) and the second rotating shaft (337) can rotate within the first lower groove (32), and the rotation angle range of the connecting block (334) can satisfy the folding and retraction action of the moving wheel (36). One end of the tension spring (39) is fixed to the right side of the connecting block (334) and the other end is fixed to the lower side of the flatbed vehicle (1) to assist the repositioning of the moving wheel (36) after folding or retraction.

6. A flatbed cart capable of crossing thresholds or obstacles according to claim 2, characterized in that: The handle (34) is connected to the connecting component (33) by plugging in. When the handle (34) is pulled, the connecting component (33) can be rotated to realize the folding or retraction of the moving wheel (36). The fixing sheath (35) can be locked with the first locking hole (335) or the second locking hole (336) to realize the fixation of the moving wheel (36) in the folded or retraction state.

7. A flatbed cart capable of crossing thresholds or obstacles according to claim 1, characterized in that: The wear-resistant layer (38) completely covers the outer circumferential surface of the moving wheel (36), and the wear-resistant layer (38) and the moving wheel (36) are tightly and fixedly connected.

8. A flatbed cart capable of crossing thresholds or obstacles according to claim 2, characterized in that: The second lower groove (332) is opened at the lower end of the wheel seat (331) with the groove opening facing downward.

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