Locking device for a hydraulic tailgate

Abstract

The utility model belongs to the technical field of locking device, concretely relates to a locking device of truck hydraulic coaming, including, coaming folding assembly contains the car ground plate, car, side edge mouth, side coaming, hydraulic cylinder one for pushing or recycling and piston rod one, the top welding of car ground plate is fixed with the car for storing goods. The scheme is driven piston rod one telescopic by hydraulic cylinder one pushing side coaming, drives side coaming to rotate around axle rod one, thereby fast opening or closing side edge mouth, when loading and unloading, side coaming is completely opened, leaves out spacious operation space, when transporting, then tightly closes, ensures the safety of goods, after coaming closing, hydraulic cylinder two drives the accurate insertion of bolt into pin seat, forms mechanical interlock, effectively prevents the loosening of coaming due to vibration in driving, and hydraulic cylinder one continuously provides closing pressure, makes coaming and car tightly fit, this locking mode strengthens the leakproofness, and can bear the jolt impact in long-distance transportation, and the risk of goods falling is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of locking devices, specifically relating to a locking device for a truck hydraulic panel. Background Technology

[0002] Side panels of truck bodies are an indispensable and important component of modern transport vehicles. Their main function is to provide closure and opening for the sides of the cargo box to facilitate loading, unloading and transport of goods. Side panels of truck bodies are not only an important guarantee for cargo transportation, but also a key piece of equipment for improving transportation efficiency and safety.

[0003] Side panels are typically made of high-strength metal materials, offering excellent durability and impact resistance, effectively protecting goods during transportation.

[0004] Currently, hydraulically propelled side panels on trucks are typically located on both sides of the cargo compartment. The hydraulically propelled panels allow for loading and unloading from either the rear cargo door or from both sides simultaneously, improving efficiency. However, most hydraulically constructed side panels rely solely on the self-locking mechanism of the hydraulic system to secure them when closed. If the hydraulic system becomes loose or damaged, the side panels can easily be thrown open at high speeds, potentially causing cargo to fall out and posing a safety hazard. Utility Model Content

[0005] The purpose of this utility model is to provide a locking device for hydraulic side panels of trucks, which aims to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A locking device for a truck hydraulic side panel includes,

[0008] The enclosure retraction assembly includes a chassis, a cargo compartment, side openings, side panels, a hydraulic cylinder for pushing or retracting, and a piston rod. A cargo compartment for storing goods is welded and fixed on the top of the chassis. Side openings penetrating the interior are provided on both sides of the cargo compartment. Side panels also cover both sides of the cargo compartment. A hydraulic cylinder is symmetrically distributed inside the cargo compartment. A piston rod for extension and retraction is provided inside the hydraulic cylinder. The other end of the piston rod is disposed on the surface of the side panel.

[0009] The side panel closing and locking assembly includes a hydraulic cylinder, a piston rod, a pin and a seat for interlocking and locking. The hydraulic cylinders are mounted on both sides of the inner wall of the carriage via brackets. The piston rod is installed inside the hydraulic cylinder for extension and retraction. The end of the piston rod is fixedly provided with a pin. A seat is mounted on the inward side of the side panel at the position of the hydraulic cylinders via brackets. The surface of the pin is slidably sleeved inside the seat.

[0010] As a preferred embodiment of this utility model, bearings are fixedly installed at both ends of the top of the carriage. A shaft is inserted into the interior of two bearings distributed along one side. The surface of the shaft is interference-fitted with the inner ring wall of any one of the bearings. A sleeve is fixedly sleeved on the surface of the shaft, and the outer ring wall of the sleeve is welded to the top of the side panel.

[0011] As a preferred embodiment of this utility model, the tail end of the hydraulic cylinder is provided with a hinge member, and the hydraulic cylinder is rotatably mounted to the top of the interior of the carriage through the hinge member. The end of the piston rod is provided with a hinge member, and the piston rod is rotatably mounted to the inward side of the side panel through the hinge member.

[0012] As a preferred embodiment of this utility model, a panel unfolding anti-collapse component is also provided in the middle of the carriage. The panel unfolding anti-collapse component includes a second bearing. The second bearings are symmetrically distributed along both sides of the carriage. The same shaft is provided through the interior of the second bearings distributed along both sides. The surface of the shaft is interference-fitted with the inner ring wall of the second bearing. A knob is provided between the two second bearings and is fixedly sleeved on the surface of the shaft.

[0013] As a preferred embodiment of this utility model, square tubes are respectively provided on both sides of the shaft two, the inside of the square tubes is provided with internal threads, and the surface of the shaft two is provided with external threads. The external threads distributed on both sides are in opposite directions, and the external threads and internal threads are threadedly connected to each other.

[0014] As a preferred embodiment of this utility model, square sleeves are symmetrically distributed on both sides of the top of the interior of the carriage, and the square sleeves are slidably sleeved with the surface of the square cylinder at the corresponding position.

[0015] As a preferred embodiment of this utility model, a limiting block is fixedly installed on the outer ring wall of the square cylinder near the bearing two, and a support block is fixedly installed on the end of the square cylinder away from the bearing two, with the outward end of the support block having an arc surface structure.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This solution uses a hydraulic cylinder to push a piston rod to extend and retract the side panel, causing the side panel to rotate around a shaft, thereby quickly opening or closing the side opening. During loading and unloading, the side panel is fully open, leaving ample working space; during transportation, it is tightly closed to ensure the safety of the goods.

[0018] 2. As described in 1, after the enclosure is closed, the hydraulic cylinder 2 drives the pin to precisely insert into the pin seat, forming a mechanical interlock, which effectively prevents the enclosure from loosening due to vibration during driving. At the same time, the hydraulic cylinder 1 continuously provides closing pressure, so that the enclosure fits tightly with the carriage. This locking method not only enhances the sealing performance, but also can withstand the bumps and impacts during long-distance transportation, greatly reducing the risk of cargo falling off.

[0019] 3. As described in 2, when the side panel is open and continuous loading and unloading operations are required, the manual rotation knob can drive the square cylinder to extend outward through the threaded transmission. The support block is used to hold the unfolded side panel in place to prevent it from closing accidentally. The two-way threaded design ensures that the supports on both sides move synchronously, while the square sleeve and the limit block constrain the movement trajectory and prevent deviation. Attached Figure Description

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

[0021] Figure 1 This is a schematic diagram showing the distribution of the components of this utility model;

[0022] Figure 2 This is a top view of the overall structure of this utility model;

[0023] Figure 3 For the present utility model Figure 2 Enlarged view of point A;

[0024] Figure 4 This is a partial schematic diagram of the enclosure panel retraction and extension assembly and the enclosure panel closing and locking assembly of this utility model;

[0025] Figure 5 This is a partial schematic diagram of the anti-collapse component of the enclosure panel of this utility model.

[0026] In the diagram: 1. Side panel retraction assembly; 10. Chassis; 11. Cargo box; 12. Side opening; 13. Side panel; 14. Bearing 1; 15. Shaft 1; 16. Sleeve; 17. Hinge 1; 18. Hydraulic cylinder 1; 19. Piston rod 1; 110. Hinge 2;

[0027] 2. Enclosure closing and locking assembly; 20. Hydraulic cylinder two; 21. Piston rod two; 22. Pin; 23. Pin seat;

[0028] 3. Anti-collapse assembly for unfolded enclosure; 30. Bearing II; 31. Shaft II; 32. Knob; 33. Square cylinder; 34. External thread; 35. Square sleeve; 36. Limiting block; 37. Support block. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] 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 excludes other embodiments. Example 1

[0032] Reference Figures 1-5 This is the first embodiment of the present invention, which provides a locking device for a truck hydraulic side panel, comprising:

[0033] The side panel retraction assembly 1 includes a chassis 10, a cargo box 11, side openings 12, side panels 13, hydraulic cylinders 18 for pushing or retracting, and piston rods 19. A cargo box 11 for storing goods is welded and fixed to the top of the chassis 10. Side openings 12 penetrating the cargo box 11 are provided on both sides of the cargo box 11. Side panels 13 also cover both sides of the cargo box 11. Hydraulic cylinders 18 are symmetrically distributed inside the cargo box 11, and each hydraulic cylinder 18 has internal mechanisms for extension and retraction. The piston rod 19 has one end set on the surface of the side panel 13. The side opening 12 is opened on the side of the carriage 11 so that the loading and unloading of goods can be carried out from the side. The side panel 13 can cover the side opening 12. When driving, the side opening 12 is closed. When loading and unloading, it can be opened to leave enough space for loading and unloading. The side panel 13 is extended and retracted by the piston rod 19 of the hydraulic cylinder 18 so that the side panel 13 can be rotated to open or close, realizing the hydraulic propulsion operation.

[0034] The side panel closing and locking assembly 2 includes a second hydraulic cylinder 20, a second piston rod 21, a pin 22 for mutual insertion and locking, and a pin seat 23. The second hydraulic cylinder 20 is mounted on both sides of the inner wall of the carriage 11 via brackets. The second hydraulic cylinder 20 has a second piston rod 21 for extension and retraction inside. The end of the second piston rod 21 is fixedly provided with a pin 22. On the inward side of the side panel 13, at the position of the second hydraulic cylinder 20, a pin seat 23 is mounted on the bracket. The surface of the pin 22 slides into the inside of the pin seat 23. After the side panel 13 is closed, the second piston rod 21 of the second hydraulic cylinder 20 extends, so that the pin 22 can be engaged and inserted into the pin seat 23, thereby realizing the closure and fixation of the side panel 13 and the carriage 11.

[0035] Bearings 14 are fixedly installed at both ends of the top of the carriage 11. A shaft 15 is inserted into the two bearings 14 distributed along one side. The surface of the shaft 15 is interference-fitted with the inner ring wall of any one of the bearings 14. A sleeve 16 is fixedly sleeved on the surface of the shaft 15. The outer ring wall of the sleeve 16 is welded and fixed to the top of the side panel 13. The side panel 13 is connected to the sleeve 16. The sleeve 16 rotates with the bearings 14 through the shaft 15 fixed inside it, which can realize the flipping or closing of the side panel 13.

[0036] The hydraulic cylinder 18 is equipped with a hinge 17 at its tail end. The hydraulic cylinder 18 is rotatably mounted to the top of the interior of the carriage 11 via the hinge 17. The piston rod 19 is equipped with a hinge 2 110 at its end. The piston rod 19 is rotatably mounted to the inward side of the side panel 13 via the hinge 2 110. The hinge 17, the hinge 2 110, the shaft 15, and the bearing 14 rotate. Through the rotation of these three points, the side panel 13 can be stably rotated to open and close. Each side panel 13 is equipped with two hydraulic cylinders 18, which can ensure the stability and safety of the propulsion process.

[0037] The carriage 11 is equipped with a side panel unfolding anti-collapse assembly 3 in the middle. The side panel unfolding anti-collapse assembly 3 includes a bearing 30, which is symmetrically distributed on both sides of the carriage 11. The bearings 30 distributed on both sides have the same shaft 31 running through them. The surface of the shaft 31 is interference-fitted with the inner ring wall of the bearing 30. A knob 32 is located between the two bearings 30 and is fixedly sleeved on the surface of the shaft 31. The side panel unfolding anti-collapse assembly 3 serves to protect the side panel 13 from sudden closure when the hydraulic cylinder 18 fails or is damaged. The two bearings 30 can ensure that the shaft 31 inside them remains stationary when rotating. The knob 32 can manually rotate the shaft 31 in both directions.

[0038] Among them, square cylinders 33 are respectively provided on both sides of the shaft 31. The inside of the square cylinder 33 is provided with internal threads, and the surface of the shaft 31 is provided with external threads 34. The external threads 34 distributed on both sides are opposite in direction. The external threads 34 and the internal threads are threadedly connected to each other. The internal threads inside the square cylinder 33 move when the external threads 34 are based on the rotation of the shaft 31. The external threads 34 distributed symmetrically on both sides and opposite in direction can make the two square cylinders 33 move closer or further away at the same time.

[0039] Among them, square sleeves 35 are symmetrically distributed on both sides of the top of the interior of the carriage 11. The square sleeves 35 are slidably sleeved with the surface of the square cylinder 33 at the corresponding position. The square cylinder 33 slides relative to the square sleeves 35. Through shape limiting, when the external thread 34 moves with the internal thread, it will only move the square cylinder 33 horizontally back and forth.

[0040] Among them, a limiting block 36 is fixedly installed on the outer ring wall of the square cylinder 33 near the bearing 30, and a support block 37 is fixedly installed on the end of the square cylinder 33 away from the bearing 30. The outward end of the support block 37 has an arc surface structure. The limiting block 36 can play a role in preventing detachment when the square cylinder 33 continues to extend outward. The support block 37 can extend outward after the side panel 13 is opened, and cooperate with the square cylinder 33 to provide anti-collapse support for the side panel 13 after it is unfolded, thereby improving the safety of the side panel 13. When it is necessary to move the two square cylinders 33, the knob 32 is manually turned so that the shaft 31 can rotate based on the bearing 30. The two square cylinders 33 can move by rotating through the external threads 34 distributed on both sides in opposite directions. The two square cylinders 33 can move and slide and extend relative to the square sleeve 35. Thus, the two square cylinders 33 can move closer or further away horizontally at the same time. In addition, the two square cylinders 33 can extend outward or retract inward synchronously from the side opening 12 position.

[0041] In practice

[0042] In this design, the side panel retraction assembly 1 is rotatably connected to the top of the interior of the carriage 11 via a hinge 17 at the tail of a hydraulic cylinder 18. The end of a piston rod 19 is rotatably connected to the inner side of the side panel 13 via a hinge 110. When the hydraulic cylinder 18 is activated, the piston rod 19 extends outward, pushing the side panel 13 to rotate around a shaft 15. The shaft 15 is fixed inside a sleeve 16, and the sleeve 16 is welded to the top of the side panel 13. A bearing 14 provides stable support for the shaft 15. The rotation trajectory of the side panel 13 is constrained by the rotational pair formed by the hinge 17, the hinge 110, and the bearing 14, ensuring a smooth opening and closing process. The two hydraulic cylinders 18 are symmetrically distributed, providing balanced thrust and avoiding jamming caused by uneven force on one side. When closed, the side panel 13 completely covers the side opening 12; when opened, the side panel 13 flips outward, leaving space for loading and unloading goods at the side opening 12.

[0043] Hydraulic cylinder 20 is fixed to both sides of the inner wall of the carriage 11. Piston rod 21 is fitted with pin 22 at the end. Pin seat 23 is fixed to the corresponding position on the inner side of the side panel 13. When the side panel 13 is closed, hydraulic cylinder 20 drives piston rod 21 to extend. Pin 22 is precisely inserted along the inner hole of pin seat 23 to form a mechanical interlock. After locking, there is no relative displacement between the side panel 13 and the carriage 11, ensuring the sealing and wind pressure resistance of the side opening 12 during driving. When unlocking, hydraulic cylinder 20 retracts piston rod 21, pin 22 disengages from pin seat 23, and the side panel 13 can be opened freely.

[0044] The anti-collapse component 3 of the side panel unfolds is driven by manually rotating the knob 32 to rotate the shaft 31, which drives the two square cylinders 33 on both sides to extend and retract synchronously, providing emergency support for the side panel 13. The surface of the shaft 31 is provided with external threads 34 in opposite directions, which mesh with the internal threads of the square cylinders 33. When the knob 32 is rotated, the shaft 31 rotates in the bearing 30. The square cylinders 33 cannot rotate due to the sliding constraint of the square sleeve 35, and can only move in the horizontal direction. When the two square cylinders 33 extend outward at the same time, the support block 37 abuts against the inner side of the unfolded side panel 13. The arc structure adapts to different opening and closing angles. If the hydraulic cylinder 18 fails, manually unscrewing the support block 37 can prevent the side panel 13 from closing accidentally. The limit block 36 limits the maximum stroke of the square cylinders 33 to prevent them from coming off.

[0045] 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 proportion 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 this utility model. The order or sequence of any process or method steps may be changed or reordered 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 structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0046] 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 present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0047] 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.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model 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 solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A locking device for a hydraulic side panel of a truck, characterized in that: include, The enclosure retraction assembly (1) includes a chassis (10), a cargo compartment (11), side openings (12), side panels (13), a hydraulic cylinder (18) for pushing or retracting, and a piston rod (19). The cargo compartment (11) for storing goods is welded and fixed on the top of the chassis (10). The cargo compartment (11) has side openings (12) that penetrate its interior on both sides. The cargo compartment (11) is also covered with side panels (13) on both sides. The hydraulic cylinder (18) is symmetrically distributed inside the cargo compartment (11). The piston rod (19) for extension and retraction is provided inside the hydraulic cylinder (18). The other end of the piston rod (19) is provided on the surface of the side panel (13). The enclosure closing and locking assembly (2) includes a hydraulic cylinder two (20), a piston rod two (21), a pin (22) for mutual insertion and locking, and a pin seat (23). The hydraulic cylinder two (20) is mounted on both sides of the inner wall of the carriage (11) by a bracket. The piston rod two (21) for extension and retraction is provided inside the hydraulic cylinder two (20). The end of the piston rod two (21) is fixedly provided with a pin (22). The pin seat (23) is mounted on the inner side of the side enclosure (13) at the position of the hydraulic cylinder two (20) by a bracket. The surface of the pin (22) is slidably sleeved inside the pin seat (23).

2. The locking device for a truck hydraulic side panel according to claim 1, characterized in that: Bearings (14) are fixedly installed at both ends of the top of the carriage (11). A shaft (15) is inserted into the interior of the two bearings (14) distributed along one side. The surface of the shaft (15) is interference-fitted with the inner ring wall of any one of the bearings (14). A sleeve (16) is fixedly sleeved on the surface of the shaft (15). The outer ring wall of the sleeve (16) is welded and fixed to the top of the side panel (13).

3. The locking device for a truck hydraulic side panel according to claim 1, characterized in that: The rear end of the hydraulic cylinder (18) is provided with a hinge (17), and the hydraulic cylinder (18) is rotatably installed with the top of the interior of the carriage (11) through the hinge (17). The end of the piston rod (19) is provided with a hinge (110), and the piston rod (19) is rotatably installed with the side panel (13) on the inward side through the hinge (110).

4. The locking device for a truck hydraulic side panel according to claim 1, characterized in that: The middle part of the carriage (11) is also provided with a panel unfolding anti-collapse component (3). The panel unfolding anti-collapse component (3) includes a bearing two (30). The bearing two (30) is symmetrically distributed along both sides of the carriage (11). The bearing two (30) distributed along both sides has the same shaft two (31) running through its interior. The surface of the shaft two (31) is interference-fitted with the inner ring wall of the bearing two (30). A knob (32) is provided between the two bearing two (30). The knob (32) is fixedly sleeved on the surface of the shaft two (31).

5. The locking device for a truck hydraulic side panel according to claim 4, characterized in that: Square tubes (33) are respectively provided on both sides of the shaft (31). The inside of the square tubes (33) is provided with internal threads, and the surface of the shaft (31) is provided with external threads (34). The external threads (34) distributed on both sides are in opposite directions, and the external threads (34) and the internal threads are threaded together and installed.

6. The locking device for a truck hydraulic side panel according to claim 5, characterized in that: The top of the interior of the carriage (11) is symmetrically provided with square sleeves (35) on both sides, and the square sleeves (35) are slidably sleeved with the surface of the square cylinder (33) at the corresponding position.

7. A locking device for a truck hydraulic side panel according to claim 6, characterized in that: A limiting block (36) is fixedly installed on the outer ring wall of the square tube (33) near the bearing two (30). A support block (37) is fixedly installed at the end of the square tube (33) away from the bearing two (30). The outward end of the support block (37) has an arc surface structure.

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