Bidirectional tire pneumatic lifting device of port trailer

Abstract

The utility model provides a bidirectional tire pneumatic lifting device of a port trailer, which comprises a trailer chassis, tires and lifting mechanisms are respectively mounted at four corners below the trailer chassis, pneumatic cavities corresponding to the four tires and the lifting mechanisms are arranged on two sides inside the trailer chassis, and the pneumatic cavities are connected with air cylinders of the tires and the lifting mechanisms; the periphery of each tire and lifting mechanism is provided with a single tire protection mechanism, the tire protection mechanisms are installed at the four corners of the lower portion of the trailer chassis, and the trailer chassis is provided with a protection mechanism driving mechanism for driving the tire protection mechanisms. The lifting mechanism is effectively prevented from directly colliding with an external object, and the damage risk is remarkably reduced. After the tire is lifted, the tire and the mechanism are completely wrapped by the storage protective cover, and protection is enhanced. The design of a protection mechanism driving mechanism makes opening and closing more convenient and reliable, and the safety performance of the trailer is improved. The device is compact in structure, the pneumatic cavity is connected with a truck pneumatic system, and resource utilization is efficient.

Description

Technical Field

[0001] This utility model belongs to the field of port trailer technology, and in particular relates to a bidirectional tire pneumatic lifting device for port trailers. Background Technology

[0002] Trailers, as leaders in the construction machinery field, play an increasingly crucial role in the transportation industry. However, with increasingly dense cargo accumulation and cramped spaces in ports, the operational flexibility of traditional trailers has been significantly limited. To solve this problem, an innovative trailer unit has emerged that can flexibly control tire lifting to adapt to confined working environments.

[0003] Specifically, Chinese utility model patent document (publication number CN 216153755 U) describes a bidirectional pneumatic tire lifting device for port trailers. This device cleverly utilizes the truck's pneumatic system to achieve precise control of the tire lifting mechanism, thus easily raising and lowering the tires. However, the design of this lifting mechanism has a significant flaw: its adjusting components are completely exposed, making them highly susceptible to collisions with surrounding cargo or debris, leading to damage. Even more seriously, when the tire is completely off the ground, both the tire and the lifting mechanism remain exposed, undoubtedly increasing their risk of damage.

[0004] Therefore, it is essential to invent a bidirectional pneumatic lifting device for port trailers. Utility Model Content

[0005] To address the aforementioned technical problems, this utility model provides a bidirectional pneumatic tire lifting device for a port trailer, comprising a trailer chassis, tires and lifting mechanisms, pneumatic chambers, tire protection mechanisms, and a protection mechanism drive mechanism. Tires and lifting mechanisms are respectively installed at the four corners below the trailer chassis. Pneumatic chambers corresponding to the four tires and lifting mechanisms are located on both sides of the interior of the trailer chassis, and these pneumatic chambers are connected to the cylinders of the tires and lifting mechanisms. A single tire protection mechanism is provided around each tire and lifting mechanism, and these tire protection mechanisms are installed at the four corners below the trailer chassis. A protection mechanism drive mechanism is provided on the trailer chassis to control the opening of the tire protection mechanisms.

[0006] Preferably, there are four pneumatic cavities in total, with two cavities forming a group. The pneumatic cavities on the same vertical line are also grouped together. The pneumatic cavities are connected to the truck's pneumatic system.

[0007] Preferably, the tire protection mechanism includes a support plate, a starter shaft, a drive worm gear, and a transmission gear. Two support plates are provided, and the two support plates are fixedly installed in parallel below the trailer chassis. Two parallel starter shafts are rotatably installed between the two support plates. One end of one starter shaft is fixed to the drive worm gear, and the other ends of the two starter shafts are respectively fixed to the transmission gears. The transmission gears provided at the other ends of the two starter shafts mesh with each other.

[0008] Preferably, each of the starting shafts is equipped with a storage protective cover, and there are two storage protective covers. The two storage protective covers are located on the outside of the tire and the lifting mechanism, and the storage protective covers are used to protect the tire and the lifting mechanism.

[0009] Preferably, one of the drive worm gears fixedly installed at one end of the start-up shaft meshes with the worm of the drive mechanism of the protection mechanism, and the worm is rotatably installed in a slot opened at the bottom of the trailer chassis.

[0010] Preferably, the drive mechanism of the protective mechanism includes a transmission cavity, a mounting groove and a driven gear. The transmission cavity is located inside one side of the trailer chassis. The driven gear is rotatably mounted on the inner side of the mounting groove in the middle of the transmission cavity. The driven gear is fixed to one end of the worm gear.

[0011] Preferably, the transmission cavity has a "U" shaped structure, with both ends of the transmission cavity connected to the truck's hydraulic system. The driven gear is located in the middle of the transmission cavity, and the hydraulic oil flowing inside the transmission cavity allows the driven gear in the mounting slot to move.

[0012] Preferably, after the tire and lifting mechanism are fully lifted upwards, the support plate of the tire protection mechanism will contact the ground to provide effective support, and the housing cover will completely enclose the tire and lifting mechanism.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This utility model, through its innovative tire protection mechanism design, effectively avoids direct collisions between the lifting mechanism's adjusting components and external goods or debris, significantly reducing the risk of damage caused by collisions. After the tire is fully lifted, a storage protective cover completely encloses the tire and lifting mechanism, further enhancing the protective effect. Simultaneously, the design of the protection mechanism's drive mechanism makes opening and closing the tire protection mechanism more convenient and reliable, improving the overall safety performance of the trailer. Furthermore, the device has a compact structure, with the pneumatic chamber connected to the truck's pneumatic system, achieving efficient resource utilization. The design of the tire protection mechanism and drive mechanism facilitates maintenance and repair, reducing maintenance costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a partial cross-sectional structural diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the overall bottom structure of this utility model.

[0018] Figure 4 This utility model Figure 2 A magnified schematic diagram of the structure at point A.

[0019] In the picture:

[0020] Trailer chassis 1, tires and lifting mechanism 2, pneumatic cavity 3, tire protection mechanism 4, support plate 41, starter shaft 42, drive worm gear 43, transmission gear 44, storage protective cover 45, protection mechanism drive mechanism 5, transmission cavity 51, mounting groove 52, driven gear 53, worm 54, slot 55. Detailed Implementation

[0021] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0022] In the description of the embodiments, 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 the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the 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 the present utility model based on the specific circumstances.

[0023] As attached Figure 1 To be continued Figure 4 As shown:

[0024] This utility model provides a bidirectional pneumatic tire lifting device for a port trailer, comprising a trailer chassis 1, tires and lifting mechanisms 2, pneumatic chambers 3, tire protection mechanisms 4, and a protection mechanism drive mechanism 5. Tires and lifting mechanisms 2 are respectively installed at the four lower corners of the trailer chassis 1. Pneumatic chambers 3, corresponding to the four tires and lifting mechanisms 2, are provided on both sides of the interior of the trailer chassis 1. The pneumatic chambers 3 are connected to the cylinders of the tires and lifting mechanisms 2. A single tire protection mechanism 4 is provided around each tire and lifting mechanism 2. The tire protection mechanisms 4 are installed at the four lower corners of the trailer chassis 1. A protection mechanism drive mechanism 5 is provided on the trailer chassis 1 to drive the tire protection mechanisms 4, and the protection mechanism drive mechanism 5 is used to control the opening of the tire protection mechanisms 4.

[0025] Furthermore, four pneumatic chambers 3 are provided below the trailer chassis 1. These pneumatic chambers 3 are arranged in groups of two, with each group of pneumatic chambers 3 located on the same vertical line. This design not only ensures the stability and efficiency of the pneumatic system, but also allows the pneumatic chambers 3 to be smoothly connected to the truck's pneumatic system, achieving efficient utilization of resources.

[0026] Furthermore, the tire protection mechanism 4 includes support plates 41, starter shafts 42, drive worm gears 43, and transmission gears 44. Two support plates 41 are parallel and fixedly installed below the trailer chassis 1, and two parallel starter shafts 42 are rotatably mounted between them. One end of one starter shaft 42 is fixed to the drive worm gear 43, while the other ends of both starter shafts 42 are respectively fixed to the transmission gears 44, and the two transmission gears 44 mesh with each other. This design allows the tire protection mechanism 4 to work synchronously and in a coordinated manner.

[0027] Furthermore, each starter shaft 42 is equipped with a storage protective cover 45, which is located on the outside of the tire and lifting mechanism 2. The protective cover 45 can continuously protect both sides of the tire and lifting mechanism 2. When the tire and lifting mechanism 2 need to be protected, the two storage protective covers 45 can quickly close, completely enclosing the tire and lifting mechanism 2, thereby effectively preventing damage from external objects. The movement of the storage protective covers 45 will not have any contact with the ground.

[0028] Furthermore, the protective mechanism drive mechanism 5 includes a transmission cavity 51, a mounting groove 52, and a driven gear 53. The transmission cavity 51 is located inside one side of the trailer chassis 1, and the mounting groove 52 inside it is used to rotatably mount the driven gear 53. The driven gear 53 is fixed to one end of a worm gear 54, which is rotatably mounted in a slot 55 at the bottom of the trailer chassis 1. This design enables the protective mechanism drive mechanism 5 to stably and reliably drive the opening and closing of the tire protection mechanism 4.

[0029] Furthermore, the transmission chamber 51 adopts a U-shaped structure design, with its two ends connected to the truck's hydraulic system. When the hydraulic system is working, the hydraulic oil flowing inside the transmission chamber 51 can drive the driven gear 53 in the mounting groove 52 to move. This design not only achieves efficient energy transfer but also ensures the stability and reliability of the protective mechanism drive mechanism 5.

[0030] Furthermore, once the tires and lifting mechanism 2 are fully raised, the support plate 41 of the tire protection mechanism 4 will contact the ground, providing effective support. Simultaneously, the storage cover 45 will completely enclose the tires and lifting mechanism 2, further enhancing the protective effect. This design not only ensures the stability and safety of the trailer during operation but also extends the service life of the tires and lifting mechanism.

[0031] The working principle is as follows: First, when the tire and lifting mechanism 2 have not fully lifted the tire and the tire is still in contact with the ground, the two storage protective covers 45 of the tire protection mechanism 4 will be located on both sides of the tire and lifting mechanism 2 and will be in an open state. This is used to initially prevent foreign objects on both sides from colliding with the tire and lifting mechanism 2, thus providing a certain degree of protection.

[0032] When the tires and lifting mechanism 2 need to be completely off the ground for operation, the operator activates the truck's hydraulic system. The hydraulic system begins to work, injecting hydraulic oil into the transmission chamber 51 of the protective mechanism drive mechanism 5. As the hydraulic oil flows in, the hydraulic oil flowing inside the transmission chamber 51 pushes the driven gear 53 in the mounting groove 52 to begin rotating. Since the driven gear 53 is fixed to one end of the worm 54, the worm 54 also rotates. At this time, the meshing action of the worm 54 and the drive worm wheel 43 causes one of the starter shafts 42 to begin rotating, which in turn drives the other starter shaft 42 to rotate synchronously through the meshing of the transmission gear 44.

[0033] As the two starter shafts 42 rotate, the storage protective covers 45 mounted on them gradually close, moving closer to the tire and lifting mechanism 2. When the tire and lifting mechanism 2 are fully lifted upwards and out of contact with the ground, the two storage protective covers 45 of the tire protection mechanism 4 also close completely, completely enclosing the tire and lifting mechanism 2, forming a closed protective space, effectively preventing damage from external objects.

[0034] When the tires and lifting mechanism 2 have completed their operation and need to be lowered back to the ground, and the two storage covers 45 of the tire protection mechanism 4 need to be opened, the operator restarts the truck's hydraulic system. However, at this time, the hydraulic system reverses the hydraulic oil flow within the transmission chamber 51. As the hydraulic oil flows in the reverse direction, the pressure direction inside the transmission chamber 51 changes, driving the driven gear 53 to begin rotating in reverse. Similarly, through the meshing of the worm gear 54 and the drive worm wheel 43, and the synchronous rotation of the transmission gear 44, the two starter shafts 42 also begin to rotate in reverse.

[0035] As the two starter shafts 42 rotate in opposite directions, the storage protective covers 45 mounted on them gradually open and move to the sides until they return to their initial open state. At this point, the tires and lifting mechanism 2 can be safely lowered back to the ground, ready for the next operation.

[0036] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A bidirectional pneumatic tire lifting device for a port trailer, characterized in that, The system includes a trailer chassis (1), tires and lifting mechanisms (2), pneumatic chambers (3), tire protection mechanisms (4), and a protection mechanism drive mechanism (5). Tires and lifting mechanisms (2) are installed at the four corners of the trailer chassis (1). Pneumatic chambers (3) corresponding to the four tires and lifting mechanisms (2) are provided on both sides of the interior of the trailer chassis (1). The pneumatic chambers (3) are connected to the cylinders of the tires and lifting mechanisms (2). Each tire and lifting mechanism (2) is surrounded by a single tire protection mechanism (4). The tire protection mechanism (4) is installed at the four corners of the trailer chassis (1). The trailer chassis (1) is provided with a protection mechanism drive mechanism (5) that drives the tire protection mechanism (4). The protection mechanism drive mechanism (5) is used to control the opening of the tire protection mechanism (4).

2. The bidirectional pneumatic tire lifting device for a port trailer as described in claim 1, characterized in that: There are four pneumatic chambers (3) in total, two in a group. The pneumatic chambers (3) on the same vertical line are a group. The pneumatic chambers (3) are connected to the truck pneumatic system.

3. The bidirectional pneumatic tire lifting device for a port trailer as described in claim 1, characterized in that: The tire protection mechanism (4) includes a support plate (41), a starter shaft (42), a drive worm gear (43), and a transmission gear (44). There are two support plates (41), which are fixedly installed in parallel below the trailer chassis (1). Two parallel starter shafts (42) are rotatably installed between the two support plates (41). One end of one of the starter shafts (42) is fixed to the drive worm gear (43), and the other ends of the two starter shafts (42) are respectively fixed to the transmission gears (44). The transmission gears (44) at the other ends of the two starter shafts (42) mesh with each other.

4. The bidirectional pneumatic tire lifting device for a port trailer as described in claim 3, characterized in that: Each of the starting shafts (42) is equipped with a storage protective cover (45). There are two storage protective covers (45), which are located on the outside of the tire and lifting mechanism (2). The storage protective covers (45) are used to protect the tire and lifting mechanism (2).

5. The bidirectional pneumatic tire lifting device for a port trailer as described in claim 3, characterized in that: One of the starting shafts (42) has a drive worm gear (43) fixedly installed at one end, which meshes with the worm (54) of the protective mechanism drive mechanism (5). The worm (54) is rotatably installed in a slot (55) opened at the bottom of the trailer chassis (1).

6. The bidirectional pneumatic tire lifting device for a port trailer as described in claim 5, characterized in that: The protective mechanism drive mechanism (5) includes a transmission cavity (51), a mounting groove (52) and a driven gear (53). The transmission cavity (51) is located inside one side of the trailer chassis (1). The driven gear (53) is rotatably mounted on the inner side of the mounting groove (52) in the middle of the transmission cavity (51). The driven gear (53) is fixed to one end of the worm (54).

7. A bidirectional pneumatic tire lifting device for a port trailer as described in claim 6, characterized in that: The transmission cavity (51) has a "U" shaped structure. The two ends of the transmission cavity (51) are connected to the hydraulic system of the truck. The driven gear (53) is located in the middle of the transmission cavity (51). The hydraulic oil flowing inside the transmission cavity (51) allows the driven gear (53) of the mounting groove (52) to move.

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