Gooseneck frame adjusting structure of semitrailer

Abstract

The utility model relates to the technical field of semitrailers, and discloses a gooseneck frame adjusting structure of a semitrailer, which comprises a frame and a gooseneck frame with a traction pin, a bent arm protruding forwards is formed at the front end part of the frame, two adjusting control intervals are formed between the two sides of the bent arm and the lower part of the tail part of the gooseneck frame, and the traction pin is arranged in the adjusting control intervals. The middle of the gooseneck frame is in pivot connection with the front end of the bent arm, two hydraulic cylinders which are vertically upward and located in the corresponding adjusting control intervals respectively are arranged on the frame, cylinder bodies of the hydraulic cylinders are hinged to the frame, the ends of piston rods of the hydraulic cylinders are hinged to the tail of the gooseneck frame, and crank supporting legs located on the sides of the hydraulic cylinders are fixed to the two sides of the bent arm. According to the gooseneck adjusting structure, the hydraulic cylinders are compactly arranged on the two sides of the bent arm and hinged to the frame, the requirement for the overall space of a vehicle is remarkably reduced, the hydraulic cylinders and the crank supporting legs are arranged in parallel, the distance between the hydraulic cylinders and a hydraulic station is short, and the structural compactness and practicability of the vehicle are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of semi-trailers, in particular to a gooseneck frame adjustment structure of a semi-trailer. Background Art

[0002] When a low-bed semi-trailer is matched with a trailer, since the towing heights of the tractor head of the semi-trailer are high or low, it is necessary to control the pitch angle of the gooseneck frame of the semi-trailer during matching, so as to control the different towing heights of the semi-trailer to match the towing heights of different tractor heads; the adjustment of the existing gooseneck frame is mainly driven by a hydraulic cylinder, but the existing patent has the following problems: since the hydraulic station and the hydraulic cylinder occupy a large space, the hydraulic cylinder cannot be arranged in parallel with the crank support leg, and the setting position of the hydraulic cylinder is also far away from the hydraulic station on the frame, the hydraulic cylinder is difficult to install, and the connecting pipes between the hydraulic cylinders are too long.

[0003] It can be seen that the existing technology still needs to be improved and enhanced. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a gooseneck adjustment structure for a semi-trailer, aiming to solve at least one of the technical problems mentioned above.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A gooseneck adjustment structure for a semitrailer includes a frame and a gooseneck with a traction pin, the front end of the frame forms a forwardly protruding curved arm, the two sides of the curved arm and the lower part of the tail of the gooseneck form two adjustment control intervals, the middle part of the gooseneck is pivotally connected to the front end of the curved arm, the frame is provided with two vertically upward hydraulic cylinders respectively located in corresponding adjustment control intervals, the cylinder body of the hydraulic cylinder is hinged to the frame, the piston rod end of the hydraulic cylinder is hinged to the tail of the gooseneck, both sides of the curved arm are fixed with crank legs located beside the hydraulic cylinder; both sides of the gooseneck are provided with side light structures.

[0007] As a further improvement of the above technical solution, the gooseneck frame includes a web, an upper wing plate arranged on the top of the web, a lower wing plate arranged on the bottom of the web, and a traction plate arranged on the bottom of the lower wing plate, and a traction pin is provided on the traction plate.

[0008] As a further improvement of the above technical solution, a bracket is provided on the frame, a hydraulic station is provided on the bracket, a support is provided on the frame, and a multi-way valve is provided on the support.

[0009] As a further improvement of the above technical solution, the side light structure includes an L-shaped block arranged on the side surface of the gooseneck frame close to the front, a swing arm rotatably arranged on the top of the L-shaped block, and a side light arranged on the swing arm, so that the swing arm and the side light can be expanded outward or stored close to the side surface of the gooseneck frame.

[0010] As a further improvement of the above technical solution, two limiting protrusions are provided on the top surface of the L-shaped block, and the limiting protrusions are used to limit the swing arm to swing within the range of 0° to 90°.

[0011] As a further improvement of the above technical solution, two threaded holes are opened on the L-shaped block, one of which is matched with a locking screw, and the head of the locking screw limits the swing arm to always be received close to the side of the gooseneck frame, and the other threaded hole is matched with the locking screw, and the head of the locking screw limits the swing arm to always be perpendicular to the side of the gooseneck frame.

[0012] Beneficial effects of the utility model: Compared with the prior art, the gooseneck adjustment structure provided by the utility model has the following advantages: 1. By compactly arranging the hydraulic cylinders on both sides of the bending arm and hinged to the frame, the demand for the overall space of the vehicle is significantly reduced, especially solving the problem of the hydraulic cylinder and the crank leg being arranged in parallel in the original technology, as well as the problem of the long distance between the hydraulic cylinder and the hydraulic station, thereby improving the compactness and practicality of the vehicle structure. 2. The optimized layout of the hydraulic cylinder makes its installation position more reasonable, close to the hydraulic station of the frame, shortens the connecting pipe between the hydraulic cylinder and the hydraulic station, reduces the difficulty of installation and maintenance costs, and reduces the risk of leakage in the hydraulic oil circuit. 3. The direct drive mode of the hydraulic cylinder makes the pitch adjustment of the gooseneck frame more flexible and accurate, which is convenient for quickly matching tractor heads with different traction heights, and improves the efficiency and adaptability of transportation operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of the gooseneck adjustment structure provided by the utility model.

[0014] Figure 2 This is a top view of the gooseneck adjustment structure provided by the utility model.

[0015] Figure 3 This is a left view of the gooseneck adjustment structure provided by the utility model.

[0016] Figure 4 This is a structural schematic diagram of the hydraulic cylinder driving the gooseneck frame to swing upward.

[0017] Figure 5 This is a structural schematic diagram of the hydraulic cylinder driving the gooseneck frame to swing downward.

[0018] Figure 6 This is a top view of the side light structure in the unfolded state.

[0019] Figure 7 This is a top view of the side light structure in the stowed state.

[0020] Explanation of the main component symbols: 1-frame, 11-bend arm, 2-gooseneck frame, 20-adjustment control interval, 21-web, 22-upper wing plate, 23-lower wing plate, 24-traction plate, 25-traction pin, 3-hydraulic cylinder, 31-fisheye joint, 32-double-ear base, 4-crank leg, 5-side light structure, 51-L-shaped block, 52-swing arm, 53-side light, 54-limiting protrusion, 55-locking screw, 61-bracket, 62-hydraulic station, 63-bracket, 64-multi-way valve. DETAILED DESCRIPTION

[0021] The utility model provides a gooseneck adjustment structure for a semi-trailer. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0022] See also Figure 1-Figure 5 The utility model provides an adjustment structure of a gooseneck frame 2 of a semi-trailer, including a frame 1 and a gooseneck frame 2 with a traction pin 25, the front end of the frame 1 forms a forwardly protruding bent arm 11, and the two sides of the bent arm 11 and the lower part of the tail of the gooseneck frame 2 form two adjustment control intervals 20, the middle part of the gooseneck frame 2 is pivotally connected with the front end of the bent arm 11, and two hydraulic cylinders 3 facing vertically upward and respectively located in the corresponding adjustment control intervals 20 are arranged on the frame 1, the cylinder body of the hydraulic cylinder 3 is hinged to the frame 1, and the piston rod end of the hydraulic cylinder 3 is hinged to the tail of the gooseneck frame 2, and the two sides of the bent arm 11 are fixed with crank legs 4 located beside the hydraulic cylinder 3; the two sides of the gooseneck frame 2 are provided with side light structures 5.

[0023] The design of the curved arm 11 at the front end of the frame 1 enables the gooseneck frame 2 to pivot thereon, and the hydraulic cylinder 3 is directly installed on both sides of the curved arm 11, close to the frame 1, and arranged vertically upward. This layout allows the cylinder body of the hydraulic cylinder 3 to be connected to the frame 1 through a hinge, and the end of the piston rod is hinged to the tail of the gooseneck frame 2, so that when the hydraulic cylinder 3 is working, the extension and contraction of the piston rod directly drives the gooseneck frame 2 to swing up and down around the pivot point, so as to achieve precise adjustment of the pitch angle of the gooseneck frame 2. Specifically, when the piston rod of the hydraulic cylinder 3 is extended, the gooseneck frame 2 swings down; when the piston rod of the hydraulic cylinder 3 is retracted, the gooseneck frame 2 swings up. At the same time, since the hydraulic cylinder 3 is arranged close to the crank support leg 4, it not only saves space but also simplifies the installation process. In addition, the side light structure 5 added on both sides of the gooseneck frame 2 enhances the safety of the vehicle when driving.

[0024] Compared with the prior art, the gooseneck adjustment structure provided by the utility model has the following advantages: 1. By compactly arranging the hydraulic cylinder 3 on both sides of the bent arm 11 and hinged to the frame 1, the demand for the overall space of the vehicle is significantly reduced, especially solving the problem of the hydraulic cylinder 3 and the crank leg 4 being arranged in parallel in the original technology, and the problem of the hydraulic cylinder 3 and the hydraulic station 62 being far apart, thereby improving the compactness and practicality of the vehicle structure. 2. The optimized layout of the hydraulic cylinder 3 makes its installation position more reasonable, close to the hydraulic station 62 of the frame 1, shortens the connecting pipe between the hydraulic cylinder 3 and the hydraulic station 62, reduces the difficulty of installation and maintenance costs, and reduces the risk of leakage in the hydraulic oil circuit. 3. The direct drive mode of the hydraulic cylinder 3 makes the pitch adjustment of the gooseneck frame 2 more flexible and accurate, which is convenient for quickly matching tractor heads with different traction heights, and improves the efficiency and adaptability of transportation operations.

[0025] In this embodiment, a fisheye joint 31 is provided at the end of the piston rod of the hydraulic cylinder 3, and the cylinder end of the hydraulic cylinder 3 is hinged to a double-ear base 32 arranged on the frame 1, and the fisheye joint 31 is hinged to the pivot at the tail of the gooseneck frame 2.

[0026] Specifically, the gooseneck frame 2 includes a web 21, an upper wing plate 22 arranged on the top of the web 21, a lower wing plate 23 arranged at the bottom of the web 21, and a traction plate 24 arranged at the bottom of the lower wing plate 23, which significantly enhances the overall rigidity and torsion resistance of the gooseneck frame 2. Such a structural design can effectively reduce deformation when carrying heavy objects or encountering uneven roads, and ensure the stability and safety of the traction process. The traction plate 24 is located at the bottom of the lower wing plate 23 and is equipped with a traction pin 25, which helps to lower the center of gravity of the vehicle and optimize the weight distribution of the semi-trailer. This not only improves the stability of the vehicle's driving, but also reduces the risk of rollover when turning and enhances the handling performance.

[0027] Furthermore, the frame 1 is provided with a bracket 61, and the bracket 61 is provided with a hydraulic station 62. The bracket 61 is specially provided for carrying the hydraulic station 62, so that the key components of the hydraulic system can be arranged in a centralized manner, optimizing the utilization of the space of the frame 1, avoiding the interference of the hydraulic station 62 on the layout of other components, and realizing a more compact and reasonable space planning. In addition, the frame 1 is provided with a bracket 63, and the bracket 63 is provided with a multi-way valve 64. The multi-way valve 64 is a key element for controlling the flow direction of the fluid in the hydraulic system. Its reasonable layout on the bracket 63 helps to realize the precise control of the two hydraulic cylinders 3. This not only improves the response speed and control accuracy of the hydraulic system, but also facilitates the adjustment of the pitching action of the gooseneck frame 2 as needed, thereby enhancing the flexibility and adaptability of the system.

[0028] For details, see Figure 2 , Figure 6 and Figure 7As shown, the side light structure 5 includes an L-shaped block 51 arranged on the side of the gooseneck frame 2 close to the front, a swing arm 52 rotatably arranged on the top of the L-shaped block 51, and a side light 53 arranged on the swing arm 52, so that the swing arm 52 and the side light 53 can be unfolded outward or stored close to the side of the gooseneck frame 2. This means that under different road environments and lighting conditions, the driver can adjust the illumination range and angle of the side light 53 according to actual conditions, which not only meets the lighting needs at night or in low-light environments, but also maintains the compactness of the vehicle when it is not needed, avoiding unnecessary energy consumption and potential collision risks. It is particularly noteworthy that the retractable design of the side light 53 can effectively prevent the side light 53 from accidental collision or scratching when the vehicle is not in operation or passing through a narrow space, reducing the probability of damage to the lamp, extending the service life of the lamp, and reducing maintenance costs.

[0029] The top surface of the L-shaped block 51 is provided with two limiting protrusions 54, which are used to limit the swing arm 52 to swing within the range of 0° to 90°. The setting of the limiting protrusions 54 sets a clear limit for the rotation range of the swing arm 52, ensuring that the side light 53 can work within the preset safe and effective range. The swing angle of 0° to 90° covers all necessary positions from fully retracted to fully extended, which not only ensures the maximum lighting effect, but also avoids damage or interference caused by excessive swinging.

[0030] Furthermore, two threaded holes are provided on the L-shaped block 51, one of which cooperates with a locking screw 55, the head of which restricts the swing arm 52 to always be stored close to the side of the gooseneck frame 2, and the other threaded hole cooperates with the locking screw 55, the head of which restricts the swing arm 52 to always be perpendicular to the side of the gooseneck frame 2. The use of the locking screw 55 ensures that the swing arm 52 is firmly fixed at the selected position, and can effectively prevent the swing arm 52 from accidentally moving during the driving of the vehicle, whether in the stored state or in the used state, thereby increasing the stability of the system and driving safety. The locking screw 55 can be set as a hand screw.

[0031] The function of the crank leg 4 is that when the semitrailer is separated from the tractor head, the crank leg 4 is used to support the weight of the semitrailer, keep the vehicle stably parked, and prevent the vehicle from overturning or accidentally moving, especially when loading and unloading goods or performing vehicle maintenance.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A gooseneck adjustment structure for a semitrailer, characterized in that: It includes a frame and a gooseneck frame with a traction pin, the front end of the frame forms a forward-protruding curved arm, the two sides of the curved arm and the lower part of the tail of the gooseneck frame form two adjustment control intervals, the middle part of the gooseneck frame is pivotally connected to the front end of the curved arm, and the frame is provided with two hydraulic cylinders that are vertically upward and respectively located in the corresponding adjustment control intervals, the cylinder body of the hydraulic cylinder is hinged to the frame, the piston rod end of the hydraulic cylinder is hinged to the tail of the gooseneck frame, and the two sides of the curved arm are fixed with crank legs located beside the hydraulic cylinder; the two sides of the gooseneck frame are provided with side light structures.

2. The gooseneck adjustment structure of a semitrailer according to claim 1, characterized in that: The gooseneck frame comprises a web, an upper wing plate arranged on the top of the web, a lower wing plate arranged on the bottom of the web, and a traction plate arranged on the bottom of the lower wing plate, wherein a traction pin is arranged on the traction plate.

3. The gooseneck adjustment structure of a semitrailer according to claim 1, characterized in that: A bracket is arranged on the frame, a hydraulic station is arranged on the bracket, a support is arranged on the frame, and a multi-way valve is arranged on the support.

4. The gooseneck adjustment structure of a semitrailer according to claim 1, characterized in that: The side light structure includes an L-shaped block arranged on the side surface of the gooseneck frame close to the front, a swing arm rotatably arranged on the top of the L-shaped block, and a side light arranged on the swing arm, so that the swing arm and the side light can be expanded outward or stored close to the side surface of the gooseneck frame.

5. The gooseneck adjustment structure of a semitrailer according to claim 4, characterized in that: The top surface of the L-shaped block is provided with two limiting protrusions, and the limiting protrusions are used to limit the swing arm to swing within the range of 0° to 90°.

6. The gooseneck adjustment structure of a semitrailer according to claim 4, characterized in that: The L-shaped block has two threaded holes, one of which cooperates with a locking screw, the head of which limits the swing arm to always be received close to the side of the gooseneck frame, and the other threaded hole cooperates with the locking screw, the head of which limits the swing arm to always be perpendicular to the side of the gooseneck frame.

Images