Multi-angle lockable hydraulic tailgate for truck

Abstract

The utility model belongs to the technical field of truck hydraulic tail board, concretely relates to a truck hydraulic tail board of multi -angle locking, include, tail board installation subassembly, contain the ground plate of car, car body, tail board and the bottom platform for component link, tail board turnover subassembly contains axle rod one, bearing one, is used for the hydraulic cylinder one of turnover drive, is used for telescopic adjustment piston rod one, hinged member, link plate, both sides of bottom platform all are fixedly installed with two axle rod one of symmetrical distribution, the surface of axle rod one is provided with bearing one. The scheme is through the hydraulic cylinder drive piston rod telescopic in tail board turnover subassembly, cooperate hinged member and link plate drive tail board and carry out turnover action, the rotary connection of hydraulic cylinder end and bottom platform ensures the smooth of turnover process, and tail board lifting subassembly is driven big arm rotation through drive shaft, and the telescopic leveling function of hydraulic cylinder is combined, so that tail board can also carry out lifting movement after horizontal opening.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydraulic tailgates for trucks, specifically relating to a hydraulic tailgate for trucks that can be locked at multiple angles. Background Technology

[0002] In recent years, hydraulic tailgates for trucks have become an indispensable piece of equipment in modern logistics transportation, significantly improving the efficiency and safety of cargo loading and unloading.

[0003] A truck hydraulic tailgate is a hydraulic lifting platform installed at the rear of a truck to facilitate the loading and unloading of goods. It can lift and tilt using a hydraulic system, allowing goods to be easily moved from the ground to the truck bed or from the truck bed to the ground.

[0004] Currently, in conventional hydraulic parking panels, the adjustable connecting parts are separate when they are retracting and raising. This not only results in poor linkage of the adjusting components, but also easily occupies a lot of space in the vehicle compartment or chassis. In addition, when the parking panel is flipped to any angle, most parking panels are locked only by the self-locking structure of the adjusting components, which greatly increases the burden on the adjusting structure and can easily lead to damage to the adjusting components. Utility Model Content

[0005] The purpose of this invention is to provide a hydraulic tailgate for trucks that can be locked at multiple angles, in order 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 multi-angle locking hydraulic tailgate for trucks, comprising,

[0008] Tailgate mounting assembly includes chassis, cargo box, tailgate, and platform for component connection;

[0009] The tailplate tilting assembly includes a shaft, a bearing, a hydraulic cylinder for tilting drive, a piston rod for telescopic adjustment, a hinge, and a connecting plate. Two shafts are symmetrically distributed and fixedly installed on both sides of the base. The bearing is mounted on the surface of the shaft. The inner ring wall of the bearing is interference-fitted with the surface of the shaft. The hydraulic cylinder is mounted on the outer ring wall of the bearing. The piston rod is slidably telescopically mounted inside the hydraulic cylinder. The end of the piston rod is provided with a hinge. The connecting plate is installed on the surface of the tailplate. The piston rod and the connecting plate are rotatably mounted through the hinge.

[0010] The tailgate lifting assembly includes a notch, a second bearing, a second shaft, and a bushing. The tailgate has notches at both ends on the side closest to the vehicle chassis. The second bearing is fixedly installed on both sides of the inner wall of the notch. The second shaft is installed on the inner side of the second bearing with an interference fit. The bushing is fixedly sleeved on the surface of the second shaft.

[0011] As a preferred embodiment of this utility model, a cargo compartment for storage is fixedly installed on the top of the chassis, an adjustable tailgate is provided at the rear of the chassis, and a platform is assembled at the bottom of the chassis.

[0012] As a preferred embodiment of this utility model, a connecting frame is fixedly installed on the outer ring wall of the bushing, and a connecting rod is fixedly installed between the connecting frames distributed along both sides. A large arm is assembled on the side of the connecting frame near the base.

[0013] In a preferred embodiment of this utility model, a sleeve is fixedly installed through the interior of the base platform, a drive shaft is rotatably installed inside the sleeve, a bearing seat is rotatably installed at one end of the drive shaft, the outer ring wall of the bearing seat is fixed to the lower end of the chassis by a bracket, and one end of the boom is fixedly sleeved on the surface of the drive shaft.

[0014] As a preferred embodiment of this utility model, a brake motor is fixedly installed on one side of the vehicle chassis via a bracket. The brake motor has a drive shaft inside, and the end of the shaft is fixedly connected to the drive shaft via a coupling.

[0015] As a preferred embodiment of this utility model, a hydraulic cylinder two is fixed to one side of the base platform by a bracket. The hydraulic cylinder two has a piston rod two for extension and retraction inside, and the end of the piston rod two is equipped with a locking tooth.

[0016] In a preferred embodiment of this utility model, a gear is fixedly sleeved on the surface of the drive shaft, and the teeth of the locking gear mesh with the teeth of the gear.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This solution uses the hydraulic cylinder in the tail plate tilting assembly to drive the piston rod to extend and retract, which, together with the hinge and connecting plate, drives the tail plate to tilt. At the same time, the rotational connection between the end of the hydraulic cylinder and the base platform ensures the smoothness of the tilting process. The tail plate lifting assembly drives the boom to rotate through the drive shaft. Combined with the extension and leveling function of the hydraulic cylinder, the tail plate can still be lifted and lowered after it is opened horizontally.

[0019] 2. As described in point 1, a dual locking system is adopted to ensure the stability and safety of the tailgate after it is adjusted to the correct position. On the one hand, the brake motor can automatically lock the drive shaft after power failure to prevent it from rotating unexpectedly. On the other hand, the hydraulic cylinder pushes the locking teeth to mesh with the gears, further reinforcing the positioning effect of the drive shaft. In addition, the hydraulic cylinder itself also has a locking function, which can fix the position after extension and retraction, effectively preventing the tailgate from being displaced due to external forces or vibrations during operation, thus ensuring the safety of operators and goods. 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 various mechanisms of this utility model;

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

[0023] Figure 3 This is a schematic diagram of the bottom connection of the tail plate of this utility model;

[0024] Figure 4 This is a side view of the tailgate bottom connection of this utility model;

[0025] Figure 5 For the present utility model Figure 3 Enlarged diagram of point A.

[0026] In the diagram: 1. Tailgate mounting assembly; 10. Chassis; 11. Car body; 12. Tailgate; 13. Platform;

[0027] 2. Tailplate tipping assembly; 20. Shaft 1; 21. Bearing 1; 22. Hydraulic cylinder 1; 23. Piston rod 1; 24. Hinge; 25. Connecting plate;

[0028] 3. Tailgate lifting assembly; 30. Notch; 31. Bearing II; 32. Shaft II; 33. Bushing; 34. Connecting frame; 35. Connecting rod; 36. Boom; 301. Sleeve; 302. Drive shaft; 303. Brake motor; 304. Shaft seat; 3001. Hydraulic cylinder II; 3002. Piston rod II; 3003. Gear; 3004. Gear. 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 multi-angle lockable hydraulic tailgate for a truck, characterized in that it includes:

[0033] Tailgate mounting assembly 1 includes chassis 10, cargo box 11, tailgate 12 and base 13 for component connection. Chassis 10 and cargo box 11 are the main components of the truck, while tailgate 12 and base 13 are added later.

[0034] The tail plate tilting assembly 2 includes a shaft 20, a bearing 21, a hydraulic cylinder 22 for tilting drive, a piston rod 23 for telescopic adjustment, a hinge 24, and a connecting plate 25. Two symmetrically distributed shafts 20 are fixedly installed on both sides of the base 13. Bearings 21 are mounted on the surface of the shafts 20, with the inner ring wall of the bearing 21 interference-fitted to the surface of the shaft 20. A hydraulic cylinder 22 is mounted on the outer ring wall of the bearing 21, and a piston rod 23 is slidably telescopically mounted inside the hydraulic cylinder 22. 23. A hinge 24 is provided at the end of the piston rod 23, and a connecting plate 25 is installed on the surface of the tail plate 12. The piston rod 23 and the connecting plate 25 are rotatably installed through the hinge 24. When it is necessary to rotate the tail plate 12, the piston rod 23 of the hydraulic cylinder 22 can retract, so that the end of the piston rod 23 can pull one end of the tail plate 12 to rotate through the hinge 24 and the connecting plate 25. At the same time, the end of the hydraulic cylinder 22 rotates with the base 13, which can be coordinated with the flipping of the tail plate 12 to rotate.

[0035] The tailgate lifting assembly 3 includes a notch 30, a second bearing 31, a second shaft 32, and a bushing 33. The tailgate 12 has notches 30 at both ends on the side near the chassis 10. The second bearing 31 is fixedly installed on both sides of the inner wall of the notch 30. The second shaft 32 is installed on the inner side of the second bearing 31 with an interference fit. The bushing 33 is fixedly sleeved on the surface of the second shaft 32. During the rotation of the tailgate 12, the second shaft 32 fixed inside the bushing 33 rotates based on the second bearing 31, which can ensure the end support stability of the tailgate 12 during the flipping process.

[0036] The chassis 10 has a cargo compartment 11 fixedly installed on top of it. The rear of the chassis 10 is equipped with an adjustable tailgate 12. The bottom of the chassis 10 is equipped with a platform 13. When the tailgate 12 is closed, it covers the door area of ​​the cargo compartment 11. When it is open, it can be adjusted to any angle.

[0037] Among them, a connecting frame 34 is fixedly installed on the outer ring wall of the bushing 33, and a connecting rod 35 is fixedly installed between the connecting frames 34 distributed on both sides. A large arm 36 is assembled on the side of the connecting frame 34 near the base platform 13. The large arm 36 can be fixed to the bushing 33 through the connecting frame 34, so that the bushing 33 can maintain a stable position when the tail plate 12 is flipped.

[0038] The base 13 has a sleeve 301 fixed inside, and a drive shaft 302 is rotatably installed inside the sleeve 301. A bearing seat 304 is rotatably installed at one end of the drive shaft 302. The outer ring wall of the bearing seat 304 is fixed to the lower end of the chassis 10 by a bracket. One end of the boom 36 is fixedly sleeved on the surface of the drive shaft 302. When the tailgate 12 needs to be raised or lowered, the boom 36 can be adjusted according to the rotation of the drive shaft 302. After the tailgate 12 is opened horizontally by the tailgate tilting assembly 2, it can be further raised or lowered. During the raising or lowering process, the piston rod 23 of the hydraulic cylinder 22 also needs to extend and retract to coordinate with the adjustment of the tailgate 12, so that the opening, closing and raising / lowering of the tailgate 12 is smoother and more stable.

[0039] A brake motor 303 is fixedly mounted on one side of the chassis 10 via a bracket. The brake motor 303 has a drive shaft inside, and the end of the shaft is fixedly connected to the drive shaft 302 via a coupling. The brake motor 303 can lock up after power is cut off, and the power to the brake motor 303 can be turned off after the drive shaft 302 has rotated to a certain angle, thus ensuring the stability of the drive shaft 302. The brake motor 303 is externally connected to a forward and reverse switch, model HY2-8, which can adjust the forward and reverse rotation of the brake motor 303.

[0040] Hydraulic cylinder 3001 is fixed to one side of the base 13 by a bracket. The hydraulic cylinder 3001 has a piston rod 3002 for extension and retraction inside, and a retaining tooth 3003 is assembled at the end of the piston rod 3002. The extension and retraction of the piston rod 3002 of the hydraulic cylinder 3001 can adjust the distance between the retaining tooth 3003 and the gear 3004 to realize the operation of meshing and disengagement.

[0041] The drive shaft 302 is fixedly fitted with a gear 3004. The teeth of the locking tooth 3003 mesh with the teeth of the gear 3004. When the drive shaft 302 rotates to a certain angle for positioning, the brake motor 303 is de-energized, achieving a locking effect. To assist the positioning effect of the brake motor 303, the piston rod 3002 of the hydraulic cylinder 3001 extends, allowing the locking tooth 3003 to mesh with the gear 3004, thereby assisting in positioning after angle adjustment. Both the hydraulic cylinder 22 and the hydraulic cylinder 3001 are Parker series, specifically the T series, and have a built-in locking function. After extension and retraction, the position can be restricted and tightened to ensure the stability of the tail plate 12 adjustment.

[0042] In practice

[0043] In this design, the tailgate tilting assembly 2 uses the piston rod 23 of the hydraulic cylinder 22 to extend and retract, driving the tailgate 12 to achieve multi-angle tilting. Initially, the tailgate 12 is closed, covering the door area of ​​the carriage 11. When tilting is required, the hydraulic cylinder 22 is energized, and the piston rod 23 retracts. Through the linkage between the hinge 24 and the connecting plate 25, the tailgate 12 is pulled to rotate around the shaft 20. The shaft 20 is fixed to both sides of the base 13. The inner ring of the bearing 21 is interference-fitted with the shaft 20, and the outer ring is interference-fitted with the hydraulic cylinder 21. The hydraulic cylinder 22 is connected to ensure that it can rotate synchronously with the tail plate 12. At the same time, the notch 30 at the other end of the tail plate 12 is equipped with a bearing 31 and a shaft 32. The bushing 33 is fixed on the shaft 32. The connecting frame 34 and the connecting rod 35 form a stable support structure. During the flipping process, the extension and retraction of the hydraulic cylinder 22 is synchronously matched with the angle of the tail plate 12. The hydraulic cylinder 22 has a built-in locking function that can fix any angle, realizing the stepless adjustment of the tail plate 12 from horizontal closure to vertical expansion.

[0044] The tailgate lifting assembly 3 drives the drive shaft 302 to rotate via the brake motor 303, which in turn drives the boom 36 to lift and lower, thereby adjusting the height of the tailgate 12. The drive shaft 302 passes through the sleeve 301 of the base platform 13. One end is fixed to the underside of the chassis 10 via the bearing seat 304, and the other end is driven by the brake motor 303 through a coupling. After the brake motor 303 is started, the drive shaft 302 drives the boom 36 to rotate. The boom 36 is linked with the bushing 33 via the connecting bracket 34, which pushes the tailgate 12 to lift and lower as a whole. During the lifting and lowering process, the hydraulic cylinder 22 adjusts the length of the piston rod 23 in real time. To ensure that the tail plate 12 always remains horizontal, for example, when the boom 36 is raised, the hydraulic cylinder 22 extends the piston rod 23 to counteract the tilting tendency of the tail plate 12; conversely, the piston rod 23 retracts. After the brake motor 303 is de-energized, the drive shaft 302 is locked through the locking function. At the same time, the piston rod 3002 of the hydraulic cylinder 3001 extends, so that the locking tooth 3003 meshes with the gear 3004, doubly locking the angle of the drive shaft 302. The gear 3004 is fixed to the surface of the drive shaft 302, and the tooth profile of the locking tooth 3003 is precisely matched with it to ensure the stability of the lifting position.

[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 multi-angle locking hydraulic tailgate for trucks, characterized in that: include, Tailgate mounting assembly (1) includes a vehicle chassis (10), a cargo box (11), a tailgate (12), and a base (13) for component connection. The tail plate tilting assembly (2) includes a shaft (20), a bearing (21), a hydraulic cylinder (22) for tilting drive, a piston rod (23) for telescopic adjustment, a hinge (24), and a connecting plate (25). Two shafts (20) are fixedly installed on both sides of the base (13). The bearing (21) is provided on the surface of the shaft (20). The inner ring wall of the bearing (21) is interference-fitted with the surface of the shaft (20). The hydraulic cylinder (22) is assembled on the outer ring wall of the bearing (21). The piston rod (23) is provided inside the hydraulic cylinder (22) for sliding telescopic extension. The end of the piston rod (23) is provided with a hinge (24). The connecting plate (25) is installed on the surface of the tail plate (12). The piston rod (23) and the connecting plate (25) are rotatably installed through the hinge (24). The tailgate lifting assembly (3) includes a notch (30), a second bearing (31), a second shaft (32), and a bushing (33). The tailgate (12) has notches (30) at both ends on the side near the chassis (10). The second bearing (31) is fixedly installed on both sides of the inner wall of the notch (30). The second shaft (32) is installed on the inner side of the second bearing (31) with an interference fit. The bushing (33) is fixedly sleeved on the surface of the second shaft (32).

2. The multi-angle locking hydraulic tailgate for trucks according to claim 1, characterized in that: A cargo compartment (11) for storing goods is fixedly installed on the top of the chassis (10), and an adjustable tail plate (12) is provided at the rear of the chassis (10). A base platform (13) is assembled at the bottom of the chassis (10).

3. A multi-angle locking hydraulic tailgate for trucks according to claim 1, characterized in that: A connecting frame (34) is fixedly installed on the outer ring wall of the bushing (33), and a connecting rod (35) is fixedly installed between the connecting frames (34) distributed on both sides. A large arm (36) is assembled on the side of the connecting frame (34) near the base (13).

4. A multi-angle locking hydraulic tailgate for trucks according to claim 3, characterized in that: A sleeve (301) is fixedly installed inside the base (13). A drive shaft (302) is rotatably installed inside the sleeve (301). A bearing seat (304) is rotatably installed at one end of the drive shaft (302). The outer ring wall of the bearing seat (304) is fixed to the lower end of the chassis (10) by a bracket. One end of the boom (36) is fixedly sleeved on the surface of the drive shaft (302).

5. A multi-angle locking hydraulic tailgate for trucks according to claim 4, characterized in that: A brake motor (303) is fixedly installed on one side of the chassis (10) by a bracket. The brake motor (303) has a drive shaft inside, and the end of the shaft is fixedly connected to the drive shaft (302) by a coupling.

6. A multi-angle locking hydraulic tailgate for trucks according to claim 5, characterized in that: A hydraulic cylinder 2 (3001) is fixed to one side of the base (13) by a bracket. The hydraulic cylinder 2 (3001) is provided with a piston rod 2 (3002) for extension and retraction, and the end of the piston rod 2 (3002) is equipped with a locking tooth (3003).

7. A multi-angle locking hydraulic tailgate for trucks according to claim 6, characterized in that: A gear (3004) is fixedly sleeved on the surface of the drive shaft (302), and the teeth of the locking teeth (3003) mesh with the teeth of the gear (3004).

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