A retractable cargo cover mechanism, a collision avoidance auxiliary support assembly and a control method

Abstract

The present application relates to the technical field of vehicle cargo protection, and particularly relates to a telescopic cargo shielding mechanism, a collision prevention auxiliary support assembly and a control method, comprising a sliding rail support assembly; a telescopic frame assembly, which is in sliding cooperation with the sliding rail support assembly and can move telescopically along the length direction of the sliding rail support assembly; and a locking assembly, which is arranged between the sliding rail support assembly and the telescopic frame assembly and is used for locking the telescopic frame assembly at a preset position on the sliding rail support assembly. The nested design of the C-shaped sliding rail and the movable roller ensures the stability and anti-disengagement of the telescoping process. The corrugated handle and the pin shaft mechanism are used to realize shockproof and accurate length adjustment. The movable plate with the inclined guide rail and the intercepting piece not only provide energy absorption and buffering through the damping telescopic rod during the extension of the shielding mechanism.

Description

Technical Field

[0001] This invention relates to the field of vehicle cargo protection technology, and in particular to a retractable cargo protection mechanism, a collision avoidance auxiliary support component, and a control method. Background Technology

[0002] When trucks transport bulk cargo or open-air stacked goods, protective devices are often required to prevent the goods from being damaged by rain, snow, or dust. Existing cargo protective devices for trucks mostly use fixed tarpaulins or simple telescopic mechanisms, which have significant shortcomings in terms of spatial adaptability and operational safety. Different trucks have different cargo box heights and loading methods, and traditional fixed or simple telescopic protective devices often have limited length adjustment ranges. When a telescopic cargo protective mechanism is installed above the truck cargo box, it is prone to collisions with external obstacles during extension and retraction. At the same time, existing friction locking or sleeve mechanisms are prone to failure under vehicle vibration, causing the protective device to slip unexpectedly and creating safety hazards, failing to meet the high reliability requirements for vehicle transportation safety.

[0003] In addition, existing retractable awnings are in a long cantilever state when fully opened. Due to the lack of a stable auxiliary support structure, long-term use is prone to structural subsidence, deformation, and even fatigue fracture, affecting the life of the equipment. Moreover, most of the existing auxiliary mechanisms lack effective damping adjustment during opening or adjustment, which is often accompanied by violent rigid collision impacts, which not only reduces the stability of the mechanical structure but also increases the risk of operation. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems in the arrangement of retractable cargo protection mechanisms, anti-collision auxiliary support components and control methods in the above or existing technologies, the present invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a retractable cargo protection mechanism.

[0007] To address the problems existing in the aforementioned retractable cargo protection mechanism, the present invention provides the following technical solution: a retractable cargo protection mechanism, comprising: a slide rail support assembly; a telescopic frame assembly, which slides and engages with the slide rail support assembly and is capable of telescopic movement along the length direction of the slide rail support assembly; and a locking assembly, disposed between the slide rail support assembly and the telescopic frame assembly, for locking the telescopic frame assembly at a preset position on the slide rail support assembly.

[0008] As a preferred embodiment of the retractable cargo protection mechanism of the present invention, wherein: the slide rail support assembly includes a protection slide rail, the protection slide rail having a C-shaped opening groove extending along the length direction, and the side wall of the protection slide rail being provided with a plurality of limiting holes spaced apart along the length direction; the telescopic frame assembly includes a protection longitudinal beam and movable rollers, the movable rollers being mounted on the protection longitudinal beam and embedded in the C-shaped opening grooves to roll along the protection slide rails; the movable rollers are semi-enclosed roller assemblies, the roller assemblies being symmetrically mounted on both sides of the protection longitudinal beams via a pivot, and their outer periphery forming a rolling engagement with the inner wall of the C-shaped opening grooves; the locking assembly includes a corrugated handle and a locking pin, one end of the locking pin being connected to the corrugated handle, and the other end being able to engage with the limiting holes to lock the position of the telescopic frame assembly.

[0009] As a preferred embodiment of the retractable cargo protection mechanism of the present invention, wherein: a limiting block is provided at the end of the slide rail support assembly; the limiting block is located at the end of the travel of the protection slide rail and is used to block the movable roller to limit the maximum extension length of the telescopic frame assembly.

[0010] Another object of the present invention is to provide a collision avoidance auxiliary support component.

[0011] To address the issues of canopy support and collisions, this invention provides the following technical solution: a collision-resistant auxiliary support component, comprising: an interceptor, installed on the side wall of a slide rail support component; the interceptor includes an interceptor rod rotatably connected to the slide rail support component and a buffer telescopic rod slidably connected to the slide rail support component; the telescopic end of the buffer telescopic rod is rotatably connected to the interceptor rod; the interceptor rod is provided with a docking rod; a movable plate, installed on the side wall of a telescopic frame component and adapted to the interceptor, the movable plate including a guide surface and a docking groove; wherein, the guide surface of the movable plate is located on the relative movement trajectory of the docking rod and slidably abuts against the docking rod, causing the interceptor rod to deflect and rotate under the resistance of the buffer telescopic rod under the contact of the guide surface; the docking groove is located at the end of the guide surface, is a groove with an opening facing the movement direction of the docking rod, and engages with the docking rod when the telescopic frame component is extended into position, so that the interceptor provides support for the movable plate.

[0012] In a preferred embodiment of the anti-collision auxiliary support component of the present invention, the buffer telescopic rod is a spring damper; the buffer telescopic rod is in a normal compressed state to provide the interceptor rod with a reset preload force to push it back to the initial standby position.

[0013] In a preferred embodiment of the anti-collision auxiliary support component of the present invention, the interceptor bar has an L-shaped structure and is connected to the slide rail support component via a torsion spring, and the axial direction of the docking bar is perpendicular to the moving direction of the telescopic frame component.

[0014] As a preferred embodiment of the anti-collision auxiliary support component of the present invention, the guide surface of the movable plate gradually tilts towards the interceptor from the end away from the docking groove to the end closer to the docking groove, forming a ramp guide rail structure for guiding the docking rod to gradually undergo radial displacement.

[0015] As a preferred embodiment of the anti-collision auxiliary support component of the present invention, wherein: the docking groove is a hook-shaped opening groove opened at the bottom of the movable plate, and the hook-shaped opening groove includes a load-bearing support surface perpendicular to the moving direction of the telescopic frame component; when the docking rod enters the docking groove, the intercepting rod applies a vertically upward supporting force to the telescopic frame component through the load-bearing support surface.

[0016] As a preferred embodiment of the anti-collision auxiliary support component of the present invention, two movable plates are symmetrically arranged on the side wall of the telescopic frame component, and correspondingly, two interceptors are symmetrically arranged on both sides of the slide rail support component, so as to balance the cantilever load of the telescopic frame component through dual-sided synchronous support.

[0017] Another object of the present invention is to provide a support control method for a retractable cargo protection mechanism.

[0018] To address the issues of canopy support and collision, this invention includes the following steps: releasing the locking state between the telescopic frame assembly and the slide rail support assembly; driving the telescopic frame assembly to telescopically move along the slide rail support assembly; during the telescopic movement of the telescopic frame assembly, the interceptor is driven to move from its initial position to its support position through the guiding cooperation between the interceptor and the movable plate; when the telescopic frame assembly moves to the target position, the interceptor and the movable plate form a support cooperation to support the telescopic frame assembly; and locking the telescopic frame assembly at the target position of the slide rail support assembly using a locking assembly.

[0019] The beneficial effects of the retractable cargo protection mechanism, anti-collision auxiliary support component, and control method of the present invention are as follows: The present invention ensures the smoothness and anti-detachment of the extension process through the nested design of C-shaped slide rail and movable roller, and realizes shockproof and precise length adjustment by using corrugated handle and pin mechanism; the interceptor and the movable plate with inclined guide rail not only provide energy absorption buffer through the damping telescopic rod during the extension of the protection mechanism to prevent damage to the mechanism itself from rigid collision, but also transform the interceptor into a load-bearing column through hook groove engagement after extension, automatically compensating for the gravity sinking of the cantilever end, and significantly enhancing the overall rigidity of the structure and operational safety. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a partial structural diagram of a retractable cargo protection mechanism.

[0022] Figure 2 This is a side view of a retractable cargo protection mechanism.

[0023] Figure 3 This is a front view of the retractable cargo protection mechanism.

[0024] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0025] Figure 5 This is a schematic diagram of the overall structure of the retractable cargo protection mechanism.

[0026] Figure 6 This is a side view of the anti-collision auxiliary support component.

[0027] Figure 7 A side view showing the anti-collision auxiliary support component in its supported state.

[0028] Figure 8 This is a schematic diagram of the structure of the interceptor and movable plate of the anti-collision auxiliary support component.

[0029] Figure 9 This is a schematic diagram of the movement trajectory of the interceptor and movable plate in the anti-collision auxiliary support component.

[0030] Figure 10 A schematic diagram of the buffer telescopic rod and movable plate of the anti-collision auxiliary support component.

[0031] 100. Slide rail support assembly; 101. Slide rail shield; 102. Limiting hole; 103. Limiting stop; 200. Telescopic frame assembly; 201. Movable roller; 202. Protective longitudinal beam; 300. Locking assembly; 301. Corrugated handle; 302. Locking pin; 400. Interceptor; 401. Interceptor bar; 402. Buffer telescopic bar; 403. Connecting bar; 404. Support block; 500. Movable plate; 501. Guide surface; 502. Connecting groove; 502a. Hook-shaped opening groove; 502b. Load-bearing support surface. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example 1, referring to Figures 1 to 5 This is the first embodiment of the present invention. This embodiment provides a retractable cargo protection mechanism. In this embodiment, the retractable cargo protection mechanism is specifically manifested as a retractable cargo protection structure installed above the conveyor belt frame of an airport bulk cargo loader, including a slide rail support assembly 100, a telescopic frame assembly 200, and a locking assembly 300.

[0036] The slide rail support assembly 100 is installed above the loader conveyor belt frame, serving as the mounting base for the entire retractable cargo protection mechanism and providing guide support for the telescopic frame assembly 200. The telescopic frame assembly 200 is slidably fitted with the slide rail support assembly 100 and can extend and retract along the length of the slide rail support assembly 100 to adjust the cargo protection range and meet the usage requirements under different loading conditions.

[0037] The locking component 300 is disposed between the slide rail support component 100 and the telescopic frame component 200. It is used to lock the telescopic frame component 200 after it moves to the target position, so as to prevent the telescopic frame component 200 from moving unexpectedly under the vibration of the equipment or the action of external load, thereby improving the structural stability and operational safety of the telescopic cargo protection mechanism.

[0038] In this embodiment, the slide rail support assembly 100 is used to limit the movement path of the telescopic frame assembly 200 and bear the load of the telescopic frame assembly 200 during the telescopic process; the telescopic frame assembly 200 is used to form a cargo protection structure and change the protection length according to actual usage requirements; the locking assembly 300 is used to form a position holding after the telescopic frame assembly 200 moves to a preset position, so that the telescopic frame assembly 200 is held in the corresponding working position.

[0039] During operation, firstly, the locking component 300 is released from locking the telescopic frame component 200. Then, the telescopic frame component 200 is pushed or pulled along the slide rail support component 100 to telescopically move. When the telescopic frame component 200 moves to the target position, the locking component 300 is operated to re-engage with the slide rail support component 100, thereby locking the telescopic frame component 200 in the corresponding position, realizing the length adjustment and reliable positioning of the telescopic cargo protection mechanism.

[0040] This embodiment only illustrates the basic composition and working principle of the retractable cargo protection mechanism. The specific structures of the slide rail support assembly 100, the telescopic frame assembly 200, and the locking assembly 300 can adopt common structures in the field, or can be implemented using the specific structures described in subsequent embodiments.

[0041] Example 2

[0042] Reference Figures 1 to 5 The specific structures of the slide rail support assembly 100, the telescopic frame assembly 200, and the locking assembly 300 are described.

[0043] The slide rail support assembly 100 includes a protective slide rail 101, which is fixedly installed along the length of the loader conveyor belt frame. It can be installed on the side beam of the loader conveyor belt frame by bolt connection, welding connection or other fixed connection methods, and is used to provide guide support for the telescopic frame assembly 200.

[0044] The protective slide rail 101 has a C-shaped opening groove extending along its length. The C-shaped opening groove is continuously arranged along the protective slide rail 101, and its cross-section has a C-shaped structure, forming a guide cavity for the movable roller 201 to move. Since the opening width of the C-shaped opening groove is smaller than the internal width of the guide cavity, after the movable roller 201 is embedded in the guide cavity, it can roll and move along the protective slide rail 101 in the guide cavity. At the same time, it is radially limited by the groove walls on both sides of the C-shaped opening groove to prevent the movable roller 201 from disengaging from the protective slide rail 101, thereby improving the guiding stability of the telescopic frame assembly 200 during movement.

[0045] The sidewall of the protective slide rail 101 is provided with multiple limiting holes 102 at intervals along its length. Each limiting hole 102 penetrates the sidewall of the protective slide rail 101 and is arranged sequentially according to a preset interval, thereby corresponding to multiple different extension positions of the protective mechanism. The limiting holes 102 can be arranged at equal intervals, or they can be arranged at non-equal intervals according to the operating requirements of different models of loaders, so as to meet the positioning requirements of different extension lengths.

[0046] The telescopic frame assembly 200 includes a protective longitudinal beam 202 and movable rollers 201. The protective longitudinal beam 202 is a beam-shaped member extending along its length, with its front end connected to the protective frame and its rear end extending into the protective slide rail 101. The movable rollers 201 are mounted on the protective longitudinal beam 202 and are embedded in C-shaped opening slots, enabling the telescopic frame assembly 200 to reciprocate and extend along the protective slide rail 101.

[0047] Preferably, the movable rollers 201 adopt a semi-enclosed roller assembly, each roller assembly including a roller body, a rotating shaft, and a mounting bracket. The rotating shaft is fixedly installed on the protective longitudinal beam 202, the roller body can rotate freely around the rotating shaft, and the mounting bracket is fixed to the side of the protective longitudinal beam 202. The movable rollers 201 are symmetrically installed on both sides of the protective longitudinal beam 202 via the rotating shaft, so that the movable rollers 201 on the left and right sides respectively form a rolling engagement with the inner walls of the C-shaped opening slot. Multiple movable rollers 201 jointly bear the weight of the telescopic frame assembly 200 and ensure that the telescopic frame assembly 200 maintains stable guidance during the telescopic process. Since the movable rollers 201 form a rolling engagement with the protective slide rail 101, the frictional resistance can be effectively reduced, the smoothness of the telescopic operation can be improved, and the wear between the protective slide rail 101 and the movable rollers 201 can be reduced.

[0048] In this embodiment, the so-called semi-enclosed roller assembly refers to a roller body whose outer periphery extends beyond the mounting bracket to form rolling contact with the protective slide rail 101, while the other part of the roller body is covered and limited by the mounting bracket. The mounting bracket can constrain the axial position of the roller, thereby preventing the roller from falling off, while ensuring that the roller can rotate freely around the axis. Compared with a fully enclosed roller, it is easier to disassemble and maintain the roller; compared with a completely exposed roller, it has a better anti-detachment effect.

[0049] The locking assembly 300 is disposed between the slide rail support assembly 100 and the telescopic frame assembly 200, and includes a corrugated handle 301 and a locking pin 302. The corrugated handle 301 is installed on the side end of the telescopic frame assembly 200 for the operator to grip and operate. The corrugated handle 301 and the locking pin 302 are fixedly connected so that the two can move synchronously.

[0050] The locking pin 302 is arranged perpendicular to the length of the shielding slide rail 101, with one end fixedly connected to the corrugated handle 301 and the other end facing the shielding slide rail 101. When the locking pin 302 is inserted into the corresponding limiting hole 102, the locking pin 302 and the limiting hole 102 form a plug-in engagement, thereby restricting the telescopic frame assembly 200 from continuing to move along the shielding slide rail 101, thus locking the current position. When the operator pulls the corrugated handle 301, causing the locking pin 302 to exit the limiting hole 102, the telescopic frame assembly 200 is unlocked. At this time, the movable roller 201 rolls along the C-shaped opening groove, driving the telescopic frame assembly 200 to telescopically move along the shielding slide rail 101. After the telescopic frame assembly 200 moves to the new target position, the corrugated handle 301 is released, allowing the locking pin 302 to re-insert into the corresponding limiting hole 102, thus completing the re-locking.

[0051] Furthermore, a limiting block 103 is provided at the end of the slide rail support assembly 100. The limiting block 103 is fixedly installed on the end of the protective slide rail 101 away from the loader body and is located at the end point of the maximum travel of the movable roller 201. The limiting block 103 can be fixed on the protective slide rail 101 by welding, bolting, or integral molding, and its side facing the movable roller 201 forms a stop surface.

[0052] When the telescopic frame assembly 200 extends outward, the movable roller 201 rolls along the protective slide rail 101. When the outermost movable roller 201 moves to the end of the protective slide rail 101, it abuts against the stopping surface of the limit block 103. At this time, the limit block 103 prevents the movable roller 201 from continuing to move outward, thereby limiting the maximum extension length of the telescopic frame assembly 200 and preventing the telescopic frame assembly 200 from detaching from the protective slide rail 101 due to overextension. This improves the safety and reliability of the entire telescopic cargo protection mechanism.

[0053] In summary, this embodiment achieves smooth guided movement of the telescopic frame assembly 200 along the slide rail support assembly 100 by setting a protective slide rail 101 with a C-shaped opening groove and movable rollers 201 symmetrically arranged on both sides of the protective longitudinal beam 202; the locking assembly 300, composed of a corrugated handle 301 and a locking pin 302, cooperates with multiple limiting holes 102 to achieve reliable locking of the telescopic frame assembly 200 at different positions; and the limiting block 103 set at the end of the protective slide rail 101 limits the travel of the movable rollers 201, preventing the telescopic frame assembly 200 from exceeding the guiding range, thereby further improving the stability, safety, and service life of the telescopic cargo protective mechanism in actual use.

[0054] Example 3, Reference Figures 1 to 10This is the third embodiment of the present invention. Unlike the previous embodiment, it is a collision avoidance auxiliary support component, including an interceptor 400, which is installed on the side wall of the slide rail support component 100. The interceptor 400 includes an interceptor rod 401 rotatably connected to the slide rail support component 100, and a buffer telescopic rod 402 slidably connected to the slide rail support component 100. The telescopic end of the buffer telescopic rod 402 is rotatably connected to the interceptor rod 401. The interceptor rod 401 is provided with a connecting rod 403.

[0055] The interceptor 400 is installed at key stress points on the side wall of the slide rail support assembly 100. Its core component, the interceptor rod 401, achieves large-angle rotation via a hinge. The connected buffer telescopic rod 402 adopts a spring damper structure. When the interceptor rod 401 is deflected under force, the viscous resistance generated inside the damper can effectively absorb the kinetic energy of the telescopic frame assembly 200 during movement, thereby achieving smooth deceleration and buffering, and preventing the shielding mechanism from directly impacting external obstacles.

[0056] In the initial stage of the deflection of the interceptor bar 401, the buffer telescopic bar 402 is first compressed, and its internal damping mechanism provides the main damping force to reduce the swing speed of the interceptor bar 401 and reduce the collision impact between the movable plate 500 and the interceptor bar 401. As the interceptor bar 401 continues to deflect, the torsion spring gradually stores elastic potential energy. When the movable plate 500 leaves the interceptor bar 401, the buffer telescopic bar 402 first releases the preload, driving the interceptor bar 401 to begin resetting. Subsequently, the torsion spring continues to provide restoring force, causing the interceptor bar 401 to finally return to its initial standby position. Therefore, the buffer telescopic bar 402 mainly undertakes the functions of buffering energy absorption and initial reset, while the torsion spring mainly undertakes the functions of end reset and attitude maintenance. Together, they complete the reset process of the interceptor bar 401.

[0057] The movable plate 500 is installed on the side wall of the telescopic frame assembly 200 and is adapted to the interceptor 400. The movable plate 500 includes a guide surface 501 and a docking groove 502. The movable plate 500, serving as the input end of kinetic energy, is fixed to the side wall of the telescopic canopy. When the telescopic frame assembly extends outward, the guide surface 501 at the bottom of the movable plate 500 first contacts the docking rod 403 on the intercepting rod 401. As the canopy continues to move forward, the guide surface 501 acts as a smooth ramp, forcing the docking rod 403 to press down on the intercepting rod 401 along its trajectory, which in turn stretches the buffer telescopic rod 402. After this process is completed, the buffer rod remains in a normal compressed state, providing a reverse reset preload force to the intercepting rod 401, ensuring that the mechanism remains in close contact with the initial position of the base when not in operation.

[0058] The guide surface 501 of the movable plate 500 is located on the relative movement trajectory of the docking rod 403 and slides against the docking rod 403, so that the intercepting rod 401 deflects and rotates under the resistance of the buffer telescopic rod 402 under the contact of the guide surface 501; the docking groove 502 is located at the end of the guide surface 501, which is a groove with its opening facing the movement direction of the docking rod 403, and engages with the docking rod 403 when the telescopic frame assembly 200 is extended into place, so that the intercepting member 400 supports the movable plate 500.

[0059] The buffer telescopic rod 402 is a spring damper; the buffer telescopic rod 402 is in a normal compressed state and is used to provide the intercepting rod 401 with a reset preload force to push it back to the initial standby position.

[0060] The interceptor bar 401 has an L-shaped structure and is connected to the slide rail support assembly 100 via a torsion spring. The axial direction of the connecting bar 403 is perpendicular to the moving direction of the telescopic frame assembly 200.

[0061] In this embodiment, the buffer telescopic rod 402 is preferably any one of a gas spring damper, a hydraulic damper, or a hydraulic damper. It includes a cylinder, a piston rod, a compression spring disposed inside the cylinder, and a damping cavity. One end of the piston rod extends out of the cylinder to form a telescopic end, and the other end is disposed inside the cylinder and connected to the piston. One end of the cylinder is rotatably connected to the slide rail support assembly 100 through a first hinge seat, and the extended end of the piston rod is rotatably connected to the intercepting rod 401 through a second hinge seat. When the intercepting rod 401 deflects around the hinge axis, the piston rod generates axial telescopic movement relative to the cylinder. The compression spring provides a restoring force, and the damping medium in the damping cavity flows through the throttling channel to form a damping force to slow down the rotation speed of the intercepting rod 401. When the external force is released, the compression spring pushes the piston rod to reset, so that the intercepting rod 401 returns to the initial standby position.

[0062] The rest of the structure is the same as in Example 2.

[0063] In summary, this embodiment introduces an anti-collision auxiliary support component, which is hinged to the intercepting rod 401 installed on the side wall of the slide rail and the buffer telescopic rod 402 with damping characteristics. When the movable canopy moves the movable plate 500 and abuts the intercepting rod 401, the damping force of the spring damper absorbs the kinetic energy. After the operation is completed, the intercepting rod 401 is automatically reset by the normal compression preload of the buffer rod and the torsion spring, thus realizing flexible buffering and automatic return of the mechanism during the extension and retraction process.

[0064] Example 4,

[0065] Reference Figures 5 to 10This is the fourth embodiment of the present invention, which differs from the previous embodiment in that it has a movable plate 500. The guide surface 501 of the movable plate 500 gradually slopes towards the interceptor 400 from the end away from the docking groove 502 to the end closer to the docking groove 502, forming a ramp guide rail structure for guiding the docking rod 403 to gradually undergo radial displacement.

[0066] The docking groove 502 is a hook-shaped opening groove 502a opened at the bottom of the movable plate 500. The hook-shaped opening groove 502a includes a load-bearing support surface 502b perpendicular to the moving direction of the telescopic frame assembly 200. When the docking rod 403 enters the docking groove 502, the intercepting rod 401 applies a vertically upward supporting force to the telescopic frame assembly 200 through the load-bearing support surface 502b.

[0067] Specifically, the guide surface 501 of the movable plate 500 is further refined into a ramp guide rail structure that gradually slopes towards the interceptor 400 from a distance. This progressive tilting design minimizes the impact force on the docking rod 403 at the moment of contact and smoothly transforms the horizontal linear motion into the arc deflection motion of the interceptor rod 401. This displacement compensation logic can adapt to deformation under different loads, ensuring the determinism of the linkage process.

[0068] Two movable plates 500 are symmetrically arranged on the side wall of the telescopic frame assembly 200. Correspondingly, two intercepting members 400 are symmetrically arranged on both sides of the slide rail support assembly 100 to balance the cantilever load of the telescopic frame assembly 200 through dual-sided synchronous support. The slide rail support assembly 100 is provided with a support block 404 for limiting the rotational displacement of the intercepting rod 401.

[0069] Specifically, when the telescopic frame assembly extends to the predetermined end position, the connecting rod 403 precisely slides into the hook-shaped opening groove 502a at the bottom of the movable plate 500. At this time, the load-bearing support surface 502b in the hook groove forms surface-to-surface contact with the connecting rod 403. Since this support surface is perpendicular to the direction of movement, it can directly bear the downward load of the front end of the canopy, and vertically transfer the cantilever gravity to the slide rail support assembly 100 and the column through the intercepting rod 401. This mechanical locking state not only provides support but also plays a certain positioning role, preventing the canopy from oscillating up and down when it is open.

[0070] Furthermore, to balance the cantilever load of the large canopy, the system symmetrically arranges two identical movable plates 500 and interceptors 400 on the left and right sides of the telescopic frame assembly 200, achieving synchronous support on both sides and effectively preventing torsional deformation of the frame structure. In addition, a support block 404 is specially added to the slide rail support assembly 100. When the interceptor bar 401 rotates to the limit support position or returns to the initial position, the support block 404 can act as a rigid limit point to prevent the interceptor bar 401 from overtravel swinging due to inertia or overload, thus protecting the structural safety of the damper and hinge point.

[0071] The rest of the structure is the same as in Example 3.

[0072] In summary, this embodiment further optimizes the mating structure between the movable plate 500 and the interceptor 400. By designing the guide surface 501 of the movable plate 500 as a progressively inclined ramp guide rail, the docking rod 403 is driven to smoothly generate radial displacement and finally engage with the hook-shaped opening groove 502a with a vertical load-bearing support surface 502b. Through the intercepting mechanism arranged symmetrically on both sides and the limiting of the support block 404, the interceptor 401 is transformed into a rigid support when the canopy is extended into place, effectively offsetting the cantilever gravity load and solving the problem of the front end of the canopy sinking and deforming.

[0073] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0074] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0075] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A retractable cargo protection mechanism, characterized in that, include: Slide rail support assembly (100); The telescopic frame assembly (200) is slidably engaged with the slide rail support assembly (100) and is capable of telescopic movement along the length direction of the slide rail support assembly (100); A locking component (300) is disposed between the slide rail support component (100) and the telescopic frame component (200) for locking the telescopic frame component (200) at a preset position on the slide rail support component (100); The slide rail support assembly (100) includes a shielding slide rail (101), which has a C-shaped opening groove extending along the length direction, and the side wall of the shielding slide rail (101) is provided with a plurality of limiting holes (102) spaced along the length direction. The telescopic frame assembly (200) includes a shielding longitudinal beam (202) and a movable roller (201). The movable roller (201) is installed on the shielding longitudinal beam (202) and embedded in the C-shaped opening slot to roll along the shielding slide rail (101). The movable roller (201) adopts a semi-enclosed roller assembly. The roller assembly is symmetrically installed on both sides of the shielding longitudinal beam (202) through a rotating shaft, and its outer periphery forms a rolling fit with the inner wall of the C-shaped opening slot.

2. The retractable cargo protection mechanism as described in claim 1, characterized in that: The locking assembly (300) includes a corrugated handle (301) and a locking pin (302). One end of the locking pin (302) is connected to the corrugated handle (301), and the other end can cooperate with the limiting hole (102) to lock the position of the telescopic frame assembly (200).

3. The retractable cargo protection mechanism as described in claim 2, characterized in that: The end of the slide rail support assembly (100) is provided with a limiting block (103). The limiting stop (103) is located at the end of the travel of the protective slide rail (101) and is used to block the movable roller (201) to limit the maximum extension length of the telescopic frame assembly (200).

4. A collision avoidance auxiliary support component, applied to the retractable cargo protection mechanism as described in any one of claims 1 to 3, characterized in that: include, An interceptor (400) is installed on the side wall of the slide rail support assembly (100). The interceptor (400) includes an interceptor rod (401) rotatably connected to the slide rail support assembly (100) and a buffer telescopic rod (402) slidably connected to the slide rail support assembly (100). The telescopic end of the buffer telescopic rod (402) is rotatably connected to the interceptor rod (401). A connecting rod (403) is provided on the interceptor rod (401). A movable plate (500) is installed on the side wall of the telescopic frame assembly (200) and is adapted to the interceptor (400). The movable plate (500) includes a guide surface (501) and a docking groove (502). The guide surface (501) of the movable plate (500) is located on the relative motion trajectory of the docking rod (403) and slides against the docking rod (403), so that the intercepting rod (401) overcomes the damping force of the buffer telescopic rod (402) and rotates under the contact of the guide surface (501). The docking groove (502) is located at the end of the guide surface (501). It is a groove with an opening facing the direction of movement of the docking rod (403). When the telescopic frame assembly (200) is extended into place, it engages with the docking rod (403) to provide support for the movable plate (500).

5. The anti-collision auxiliary support component as described in claim 4, characterized in that: The buffer telescopic rod (402) is a spring damper; The buffer telescopic rod (402) is in a normal compressed state, which is used to provide the intercepting rod (401) with a reset preload force to push it back to the initial standby position.

6. The anti-collision auxiliary support assembly as described in claim 5, characterized in that: The interceptor bar (401) has an L-shaped structure and is connected to the slide rail support assembly (100) by a torsion spring. The axial direction of the docking bar (403) is perpendicular to the moving direction of the telescopic frame assembly (200).

7. The anti-collision auxiliary support assembly as described in claim 6, characterized in that: The guide surface (501) of the movable plate (500) gradually tilts towards the interceptor (400) from the end away from the docking groove (502) to the end closer to the docking groove (502), forming a ramp guide rail structure for guiding the docking rod (403) to gradually undergo radial displacement.

8. The anti-collision auxiliary support assembly as described in any one of claims 5, 6, or 7, characterized in that: The docking groove (502) is a hook-shaped opening groove (502a) opened at the bottom of the movable plate (500). The hook-shaped opening groove (502a) includes a load-bearing support surface (502b) perpendicular to the moving direction of the telescopic frame assembly (200). When the docking rod (403) enters the docking groove (502), the intercepting rod (401) applies a vertically upward supporting force to the telescopic frame assembly (200) through the load-bearing support surface (502b).

9. The anti-collision auxiliary support assembly as described in claim 8, characterized in that: Two movable plates (500) are symmetrically arranged on the side wall of the telescopic frame assembly (200). Correspondingly, two interceptors (400) are symmetrically arranged on both sides of the slide rail support assembly (100) to balance the cantilever load of the telescopic frame assembly (200) through dual-sided synchronous support.

10. A support control method for a retractable cargo protection mechanism, applicable to the anti-collision auxiliary support assembly according to any one of claims 4 to 9, characterized in that, Includes the following steps: Release the locking state between the telescopic frame assembly (200) and the slide rail support assembly (100); The telescopic frame assembly (200) is driven to telescopically move along the slide rail support assembly (100); During the telescopic movement of the telescopic frame assembly (200), the interceptor (400) is driven to move from the initial position to the support position through the guiding cooperation between the interceptor (400) and the movable plate (500); When the telescopic frame assembly (200) moves to the target position, the interceptor (400) and the movable plate (500) form a support engagement to support the telescopic frame assembly (200); The telescopic frame assembly (200) is locked in the target position of the slide rail support assembly (100) by the locking component (300).

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