A mechanism for covering a vehicle compartment

Abstract

The present disclosure relates to a kind of truck box cover mechanism, including truck box, upper cover, jacking mechanism and drive assembly, the top of truck box is provided with opening and crossbeam, two sides of truck box width direction are called first side, second side;Upper cover can be switched between the closed position of covering opening and the open position of being turned to the side outside truck box;Jacking mechanism includes first transmission part, second transmission part and third transmission part, both ends of first transmission part are respectively hinged with upper cover and crossbeam;One end of second transmission part is hinged in the first side of crossbeam, and the other end is equipped with the roller of rolling cooperation with upper cover;Two ends of third transmission part are respectively hinged on first transmission part and second transmission part.Output end of drive assembly is hinged in the second side of crossbeam, and it is hinged with first transmission part.The truck box cover mechanism of the present disclosure, by setting jacking mechanism, and being hinged with drive assembly and upper cover respectively, make upper cover move along predetermined trajectory under the action of drive assembly, improve the reliability of upper cover opening and closing.

Description

Technical Field

[0001] This disclosure relates to the field of transport vehicle technology, specifically to a vehicle body cover mechanism. Background Technology

[0002] In existing technologies, many transport vehicles have operable doors or covers on the top of their cargo compartments for loading bulk materials. However, in actual use, the opening and closing mechanisms of existing top doors generally suffer from unstable movement and are prone to jamming. The reasons for this include: traditional single-link or simple lever-type lifting mechanisms experience uneven force distribution during movement, especially at the beginning and end of the opening and closing stroke, where sudden changes in force can easily occur, leading to uneven movement; secondly, if the lifting mechanism itself lacks effective guidance and support, it is prone to lateral swaying or twisting when the door is raised, further exacerbating the instability of the movement. Utility Model Content

[0003] In order to solve the problems existing in the prior art, this disclosure provides the following technical solution:

[0004] This disclosure provides a vehicle body cover mechanism, including:

[0005] The carriage has an opening at the top, and the two opposite sides in the width direction of the carriage are referred to as the first side and the second side, respectively; a crossbeam is provided at the top of the carriage.

[0006] The cover has an open position and a closed position. When in the closed position, the cover is configured to cover the opening of the vehicle body. When in the open position, the cover is configured to flip over to the outside of one side wall of the vehicle body.

[0007] The lifting mechanism includes a first transmission member, a second transmission member, and a third transmission member. The first transmission member is configured such that one end is hinged to the upper cover and the other end is hinged to a crossbeam disposed on the top of the vehicle body. One end of the second transmission member is configured to be hinged to a first side of the crossbeam, and the other end is configured to be provided with a rolling wheel for rolling engagement with the upper cover. One end of the third transmission member is configured to be hinged to the first transmission member, and the other end is configured to be hinged to the second transmission member.

[0008] A drive assembly is hinged to the second side of the crossbeam, and the output end of the drive assembly is configured to be hinged to the first transmission member.

[0009] In one embodiment of this disclosure, when in the open position, the top cover is configured to be located outside the sidewall of the first side of the vehicle body and is in a vertical position.

[0010] In one embodiment of this disclosure, the output end of the drive component is configured to be coaxially hinged to the first drive component with the third drive component.

[0011] In one embodiment of this disclosure, the hinge point between the third transmission member and the second transmission member is configured to be coaxial with the rolling wheel.

[0012] In one embodiment of this disclosure, when in the closed position, the second transmission member is configured as an upwardly curved arc structure; a notch is provided on the side wall of the first side of the carriage.

[0013] In one embodiment of this disclosure, the crossbeam includes a first mounting beam and a second mounting beam arranged in parallel and spaced apart; the two ends of the first mounting beam and the second mounting beam are configured to be connected to a first side and a second side of the vehicle body, respectively; when in the closed position, the first transmission member, the second transmission member, the third transmission member, and the drive assembly are configured such that their orthogonal projections in the vertical direction are finally located in the gap between the first mounting beam and the second mounting beam.

[0014] In one embodiment of this disclosure, the lower end of the first transmission member is configured to be hinged to the first mounting beam and the second mounting beam respectively via a guide shaft.

[0015] In one embodiment of this disclosure, two of each of the lifting mechanism and the drive assembly are provided and are configured to be located at the front end and rear end of the vehicle body, respectively.

[0016] In one embodiment of this disclosure, a reinforcing beam is provided at the bottom of the upper cover, the first transmission member is configured to be hinged to the reinforcing beam, and the rolling wheel is configured to roll in cooperation with the end face of the reinforcing beam.

[0017] In one embodiment of this disclosure, the top of the vehicle body is provided with a guide ramp, and when in the closed position, the bent portion provided on the edge of the upper cover is configured to cooperate with the guide ramp.

[0018] The vehicle cover mechanism provided in this disclosure is equipped with a lifting mechanism consisting of a first transmission component, a second transmission component, and a third transmission component. The two ends of the lifting mechanism are respectively hinged to the drive component and the cover. Under the action of the drive component, the cover can smoothly flip from the closed position to the open position or reverse to reset along a predetermined trajectory. The whole process is reasonably stressed and runs smoothly, thereby realizing the smooth and reliable movement of the cover opening and closing process.

[0019] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the present disclosure and, together with their description, serve to explain the principles of the present disclosure.

[0021] Figure 1 This is a schematic diagram of the structure of a vehicle body cover mechanism according to an embodiment of the present disclosure;

[0022] Figure 2 This is an embodiment provided by the present disclosure. Figure 1 A magnified view of a portion at point A;

[0023] Figure 3 This is a schematic diagram of the structure when the top cover is fully opened according to an embodiment of this disclosure.

[0024] Figures 1 to 3 The one-to-one correspondence between the component names and the reference numerals in the figures is as follows:

[0025] 1. Carriage box; 11. Guide ramp; 2. Crossbeam; 21. First mounting beam; 22. Second mounting beam; 3. Top cover; 31. Reinforcing beam; 32. Bending section; 4. Lifting mechanism; 41. First transmission component; 411. Hinge shaft; 42. Second transmission component; 43. Third transmission component; 5. Rolling wheel; 6. Drive assembly. Detailed Implementation

[0026] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0027] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this disclosure or its application or use.

[0028] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0030] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0031] In this article, "first," "second," etc., are used only to distinguish one another, and not to indicate degree of importance, order, or prerequisite for each other.

[0032] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0033] This disclosure relates to a vehicle body cover mechanism, including a vehicle body, a cover, a lifting mechanism, and a drive assembly. The top of the vehicle body is provided with an opening and a crossbeam. The opening is used to provide a channel for top feeding, and the crossbeam is used to strengthen the structural strength of the top of the vehicle body and can provide a reliable mounting point for the lifting mechanism and the drive assembly. The two sides in the width direction of the vehicle body are referred to as the first side and the second side. Under the action of the drive assembly and the lifting mechanism, the top cover can switch between a closed position covering the opening and an open position flipped to the outside of the vehicle body. The lifting mechanism includes a first transmission component, a second transmission component, and a third transmission component. The drive assembly is hinged to the second side of the crossbeam, and the output end of the drive assembly is hinged to the first transmission component. One end of the first transmission component is hinged to the top cover to directly transmit the driving force to the top cover, and the other end is hinged to the crossbeam set on the top of the vehicle body, so that the first transmission component can rotate around the hinge point under the action of the driving force. One end of the second transmission component is hinged to the first side of the crossbeam, and the other end is provided with a rolling wheel for rolling cooperation with the top cover. The rolling wheel can reduce the frictional resistance between the second transmission component and the top cover, thereby improving the overall stability of the lifting mechanism. One end of the third transmission component is hinged to the first transmission component, and the other end is hinged to the second transmission component. It is used to synchronously transmit the driving force from the first transmission component to the second transmission component, thereby enhancing the overall synchronicity of the lifting mechanism.

[0034] The vehicle cover mechanism provided in this disclosure is equipped with a lifting mechanism consisting of a first transmission component, a second transmission component, and a third transmission component. The two ends of the lifting mechanism are respectively hinged to the drive component and the cover. Under the action of the drive component, the cover can smoothly flip from the closed position to the open position or reverse to reset along a predetermined trajectory. The whole process is reasonably stressed and runs smoothly, thereby realizing the smooth and reliable movement of the cover opening and closing process.

[0035] For ease of understanding, please refer to the following: Figures 1 to 3 The specific structure and working principle of a vehicle body cover mechanism disclosed herein will be described in detail with reference to an embodiment.

[0036] refer to Figures 1 to 3This disclosure provides a vehicle body cover mechanism, including a vehicle body 1, a cover 3, a lifting mechanism 4, and a drive assembly 6. The top of the vehicle body 1 has an opening, and the two opposite sides of the vehicle body 1 in the width direction are designated as a first side and a second side, respectively. A crossbeam 2 is provided on the top of the vehicle body 1. The cover 3 has an open position and a closed position. When in the closed position, the cover 3 is configured to cover the opening of the vehicle body 1; when in the open position, the cover 3 is configured to flip over to the side wall of one side of the vehicle body 1. The lifting mechanism 4 includes a first transmission member 41 and a second transmission member 42. The first transmission member 41 is configured such that one end is hinged to the upper cover 3 and the other end is hinged to the crossbeam 2 located on the top of the vehicle body 1; one end of the second transmission member 42 is configured to be hinged to the first side of the crossbeam 2 and the other end is configured to be provided with a rolling wheel 5 for rolling engagement with the upper cover 3; one end of the third transmission member 43 is configured to be hinged to the first transmission member 41 and the other end is configured to be hinged to the second transmission member 42; the drive assembly 6 is hinged to the second side of the crossbeam 2 and the output end of the drive assembly 6 is configured to be hinged to the first transmission member 41.

[0037] Specifically, the top of the carriage 1 disclosed herein is provided with an opening for providing an entry channel for materials, and a top cover 3 is provided on the top of the carriage 1 to close the opening. When the top cover 3 is in the closed position, it can seal the opening on the top of the carriage 1. When the top cover 3 is in the open position, it can be flipped around one side wall of the carriage 1 to the outside of that side wall. A lifting mechanism 4 and a drive assembly 6 are provided between the top cover 3 and the top of the carriage 1 to control the movement of the top cover 3, and a crossbeam 2 is provided on the top of the carriage 1 to provide a stable mounting point for the lifting mechanism 4 and the drive assembly 6. The two opposite sides in the width direction of the carriage 1 are respectively referred to as the first side and the second side.

[0038] The lifting mechanism 4 includes a first transmission component 41, a second transmission component 42, and a third transmission component 43. One end of the first transmission component 41 is hinged to the upper cover 3, and the other end is hinged to the crossbeam 2 on the top of the vehicle body 1, serving to bear the main flipping movement of the upper cover 3. The second transmission component 42 is located on the first side of the crossbeam 2, and its end is equipped with a rolling wheel 5, which can roll in contact with the bottom surface of the upper cover 3 during opening or closing, playing a guiding and auxiliary support role, thereby effectively reducing the frictional resistance at the contact point and preventing the upper cover 3 from shifting or jamming during movement. The two ends of the third transmission component 43 are hinged to the first transmission component 41 and the second transmission component 42 respectively, and can act as a linkage to link the first transmission component 41 and the second transmission component 42, transmitting the movement of the first transmission component 41 to the entire lifting mechanism 4, enhancing the rigidity and stability of the entire lifting mechanism 4. The drive assembly 6 is located on the second side of the crossbeam 2, and its output end is hinged to the first transmission component 41, providing power input to the entire lifting mechanism 4. Through the coordinated action of the above-mentioned multiple transmission components, the upper cover 3, under the action of the drive component 6, can smoothly flip from the closed position to the open position along a predetermined trajectory, or reset in the opposite direction. The whole process is reasonably stressed and runs smoothly, which greatly improves the reliability and operational safety of the opening and closing of the upper cover 3.

[0039] In actual operation, when the upper cover 3 moves from the closed position to the open position, the output end of the drive component 6 extends, pushing the first transmission component 41 to lift the upper cover 3 upwards, and causing the first transmission component 41 to gradually rotate around the bottom hinge shaft 411 towards the first side of the vehicle body 1. At the same time, it drives the third transmission component 43 to extend towards the first side of the vehicle body 1, and causes the second transmission component 42 to rotate around the bottom hinge point towards the direction of the first side. At this time, the rolling wheel 5 on the second transmission component 42 rolls on the bottom surface of the upper cover 3 until the upper cover 3 is fully opened. Figure 3 As shown, when the top opening is unobstructed, the material is loaded through the top opening.

[0040] Similarly, after loading is completed, when the top cover 3 moves from the open position to the closed position, the output end of the drive component 6 retracts, pulling the first transmission component 41 to gradually rotate around the bottom hinge shaft 411 towards the second side of the carriage 1. At the same time, the top cover 3, which is hinged to the first transmission component 41, is pulled up. At this time, the third transmission component 43 and the second transmission component are gradually retracted into the carriage 1 under the drive of the first transmission component 41 until the top cover 3 completely covers the opening at the top of the carriage 1, at which point the top cover 3 is completely closed.

[0041] refer to Figures 1 to 3 In one embodiment of this disclosure, when in the open position, the top cover 3 is configured to be located outside the side wall of the first side of the carriage 1 and is in a vertical state.

[0042] Specifically, when the cover 3 of this disclosure is in the open position, the cover 3 can be flipped to fit against the side wall of the vehicle body 1 and is in a vertical position. This can minimize the occupation of the space above and to the side, and also avoid the problem that the traditional cover 3 requires a large flipping radius when opening. At the same time, the structure is more stable when the cover 3 is in a vertical position and is not easily shaken by external interference such as wind, thereby improving the safety of the cover 3 when it is opened.

[0043] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, the output end of the drive assembly 6 is configured to be coaxially hinged to the first transmission member 41 with the third transmission member 43.

[0044] Specifically, the output end of the drive component 6 is coaxially hinged to the third transmission component 43 on the first transmission component 41, so that the driving force applied by the drive component 6 can be directly transmitted to the first transmission component 41 and the third transmission component 43 through the common hinge point, thereby achieving synchronous and coordinated output of driving force and motion.

[0045] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, the hinge point between the third transmission member 43 and the second transmission member 42 is configured to be coaxial with the rolling wheel 5.

[0046] Specifically, during the opening and closing of the cover 3, the rolling wheel 5 can play a guiding and auxiliary support role. In order to keep the rolling wheel 5 in contact with the edge of the cover 3, this disclosure sets the hinge point of the third transmission component 43 and the second transmission component 42 coaxially with the rolling wheel 5, so that the third transmission component 43 can synchronously follow the movement trajectory of the rolling wheel 5, ensuring that the direction of force transmission is consistent with the rolling direction, and the presence of the rolling wheel 5 can also reduce the friction on the hinge point during the movement.

[0047] In addition, this coaxial design can improve the stability of the connection between the third transmission component 43 and the second transmission component 42, making the lifting mechanism 4 run more smoothly and steadily, and improving the transmission efficiency and system reliability.

[0048] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, when in the closed position, the second transmission member 42 is configured as an upwardly curved arc structure; a notch is provided on the side wall of the first side of the carriage 1.

[0049] Specifically, the second transmission component 42 is an upwardly curved arc structure. This shape can better conform to the movement trajectory of the upper cover 3 during the opening process. When the upper cover 3 opens and the second transmission component 42 flips to its maximum displacement in conjunction with it, the notch provided on the side wall of the first side of the carriage 1 provides space for the arc-shaped part to avoid and accommodate it. In other words, the existence of the notch effectively avoids the possibility of the second transmission component 42 interfering with or colliding with the body of the carriage 1 during the movement, making the flipping action of the upper cover 3 smoother and more unobstructed.

[0050] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, the crossbeam 2 includes a first mounting beam 21 and a second mounting beam 22 arranged in parallel and spaced apart; the two ends of the first mounting beam 21 and the second mounting beam 22 are configured to be connected to the first side and the second side of the carriage 1, respectively; when in the closed position, the first transmission member 41, the second transmission member 42, the third transmission member 43, and the drive assembly 6 are configured such that their orthogonal projections in the vertical direction are finally located in the gap between the first mounting beam 21 and the second mounting beam 22.

[0051] Specifically, the crossbeam 2 is composed of a first mounting beam 21 and a second mounting beam 22 arranged in parallel and spaced intervals. Both extend along the width of the vehicle body 1, with their ends connected to the first and second sides of the vehicle body 1 respectively, forming a support structure. When the top cover 3 is in the closed position, the vertical projections of the first transmission component 41, the second transmission component 42, the third transmission component 43, and the drive assembly 6 fall entirely within the gap between the first mounting beam 21 and the second mounting beam 22. This allows the entire lifting mechanism 4 and drive assembly 6 to be effectively "stored" within the space between the first mounting beam 21 and the second mounting beam 22 when not in operation, i.e., when the top cover 3 is closed, without exceeding the outer contour of the crossbeam 2. This results in a smaller and more compact lifting mechanism 4, leaving sufficient space at the top to receive materials entering the vehicle body 1 through the top opening.

[0052] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, the lower end of the first transmission member 41 is configured to be hinged to the first mounting beam 21 and the second mounting beam 22 respectively via a hinge shaft 411.

[0053] Specifically, the lower end of the first transmission component 41 is hinged to both the first mounting beam 21 and the second mounting beam 22 via a through hinge shaft 411. This allows the first transmission component 41 to rotate smoothly around the hinge shaft 411. Furthermore, the first mounting beam 21 and the second mounting beam 22 are arranged parallel to each other and span the sides of the carriage 1. This arrangement not only allows for a more even distribution of force to the carriage 1 body, avoiding localized stress concentration, but also strengthens the structural strength of the carriage 1's top, preventing the cover 3 from compressing the carriage 1 body during movement and causing deformation. Therefore, hinged connections between the lower end of the first transmission component 41 and the first mounting beam 21 and the second mounting beam 22 enhance the lateral stability and load-bearing capacity of the entire lifting mechanism 4.

[0054] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, two lifting mechanisms 4 and two drive components 6 are provided, and are configured to be located at the front end and rear end of the carriage 1, respectively.

[0055] Specifically, there are two lifting mechanisms 4 and two drive components 6, which are respectively arranged at the front and rear ends of the carriage 1. This layout allows the cover 3 to be driven synchronously from both ends during opening and closing, resulting in more balanced force and effectively avoiding the phenomenon of the cover 3 twisting, tilting or jamming due to unilateral force or uneven force.

[0056] Furthermore, the symmetrically arranged double lifting mechanisms 4 work together to significantly improve the stability and synchronization of the movement of the top cover 3, thereby ensuring that the top cover 3 rotates stably along the predetermined trajectory. At the same time, the design of the dual drive components 6 can also reduce the stress burden on the individual drive components 6, thereby extending the service life of the individual drive components 6 and improving the opening and closing efficiency and structural durability of the top cover 3.

[0057] In addition, by placing the two lifting mechanisms 4 and the drive assembly 6 at the front and rear ends of the carriage 1 respectively, sufficient space can be left in the middle of the carriage 1 for feeding through the top opening.

[0058] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, a reinforcing beam 31 is provided at the bottom of the upper cover 3, the first transmission member 41 is configured to be hinged to the reinforcing beam 31, and the rolling wheel 5 is configured to roll in cooperation with the end face of the reinforcing beam 31.

[0059] Specifically, a reinforcing beam 31 is installed at the bottom of the upper cover 3. This not only improves the overall structural rigidity and deformation resistance of the upper cover 3, preventing the upper cover 3 from twisting due to its own weakness, but also serves as a key load-bearing point, concentrating the driving force transmitted from the lifting mechanism 4. The first transmission component 41 is directly hinged to the reinforcing beam 31, while the rolling wheel 5 rolls in contact with the end face of the reinforcing beam 31. This provides good support and guidance for the upper cover 3 during opening and closing, reduces resistance to movement, and avoids wear caused by direct contact with the upper cover 3. The entire lifting process relies on the rigid support of the reinforcing beam 31 to achieve a uniform distribution of driving force, improving the reliability, durability, and operational stability of the upper cover 3 during opening and closing.

[0060] refer to Figure 1 and Figure 2 In one embodiment of this disclosure, the top of the vehicle body 1 is provided with a guide ramp 11, and when in the closed position, the bent portion 32 provided on the edge of the upper cover 3 is configured to cooperate with the guide ramp 11.

[0061] Specifically, guide ramps 11 are provided around the top of the carriage 1, and the bent portion 32 of the edge of the cover 3 engages with the ramps when closed. This allows the cover 3 to slide naturally along the guide ramps 11 and gradually tighten during the closing process. The guiding effect of the ramps achieves alignment between the cover 3 and the top opening of the carriage 1, effectively avoiding misalignment or jamming caused by initial position deviation or slight shaking. At the same time, when the cover 3 is finally in place, the fit between the bent portion 32 and the guide ramps 11 forms a stable compression fit, enhancing the fit and sealing pre-tightening force between the cover 3 and the top opening of the carriage 1, thereby improving the stability of the cover 3 connection and enhancing the dustproof and leakproof performance of the cover 3.

[0062] The vehicle cover mechanism provided in this disclosure uses a lifting mechanism composed of a first transmission component, a second transmission component, and a third transmission component working together. The two ends of the lifting mechanism are respectively hinged to the drive component and the cover. Under the action of the drive component, the cover can smoothly flip from the closed position to the open position or reverse to reset along a predetermined trajectory. The whole process is reasonably stressed and runs smoothly, thus realizing the smooth and reliable movement of the cover opening and closing process.

[0063] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, and are not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein. The scope of this disclosure is defined by the appended claims.

Claims

1. A hood mechanism for a vehicle, characterized by comprising: include: The carriage (1) has an opening at the top, and the two opposite sides of the carriage (1) in the width direction are respectively referred to as the first side and the second side; a crossbeam (2) is provided at the top of the carriage (1). The upper cover (3) has an open position and a closed position. When in the closed position, the upper cover (3) is configured to cover the opening of the vehicle body (1). When in the open position, the upper cover (3) is configured to flip over to the outside of one side wall of the vehicle body (1). The lifting mechanism (4) includes a first transmission member (41), a second transmission member (42) and a third transmission member (43). The first transmission member (41) is configured such that one end is hinged to the upper cover (3) and the other end is hinged to the crossbeam (2) disposed on the top of the carriage (1). One end of the second transmission member (42) is configured to be hinged to the first side of the crossbeam (2) and the other end is configured to be provided with a rolling wheel (5) for rolling engagement with the upper cover (3). One end of the third transmission member (43) is configured to be hinged to the first transmission member (41) and the other end is configured to be hinged to the second transmission member (42). The drive assembly (6) is hinged to the second side of the crossbeam (2), and the output end of the drive assembly (6) is configured to be hinged to the first transmission member (41).

2. The vehicle body cover mechanism according to claim 1, characterized in that, When in the open position, the top cover (3) is configured to be located outside the side wall of the first side of the carriage (1) and is in a vertical position.

3. The vehicle body cover mechanism according to claim 1, characterized in that, The output end of the drive assembly (6) is configured to be coaxially hinged to the first drive assembly (41) with the third drive assembly (43).

4. The vehicle body cover mechanism according to claim 1, characterized in that, The hinge point between the third transmission member (43) and the second transmission member (42) is configured to be coaxial with the rolling wheel (5).

5. The vehicle body cover mechanism according to claim 1, characterized in that, When in the closed position, the second transmission member (42) is configured as an upwardly curved arc structure; the side wall of the first side of the carriage (1) is provided with a notch.

6. The vehicle body cover mechanism according to claim 1, characterized in that, The crossbeam (2) includes a first mounting beam (21) and a second mounting beam (22) arranged in parallel and at intervals; the two ends of the first mounting beam (21) and the second mounting beam (22) are respectively connected to the first side and the second side of the carriage (1); when in the closed position, the first transmission member (41), the second transmission member (42), the third transmission member (43), and the drive assembly (6) are configured in the vertical direction to finally be located in the gap between the first mounting beam (21) and the second mounting beam (22).

7. The vehicle body cover mechanism according to claim 6, characterized in that, The lower end of the first transmission member (41) is configured to be hinged to the first mounting beam (21) and the second mounting beam (22) respectively via a hinge shaft (411).

8. The vehicle body cover mechanism according to claim 1, characterized in that, Two of each of the lifting mechanism (4) and the drive assembly (6) are provided and are configured to be located at the front end and rear end of the vehicle body (1), respectively.

9. The vehicle body cover mechanism according to claim 1, characterized in that, The bottom of the cover (3) is provided with a reinforcing beam (31), the first transmission member (41) is configured to be hinged to the reinforcing beam (31), and the rolling wheel (5) is configured to roll in cooperation with the end face of the reinforcing beam (31).

10. The vehicle body cover mechanism according to claim 1, characterized in that, The top of the carriage (1) is provided with a guide ramp (11), and when it is in the closed position, the bent part (32) provided on the edge of the cover (3) is configured to cooperate with the guide ramp (11).

Images