Container towing dolly

Abstract

The application relates to a container towing and pulling frame, and relates to the technical field of container transportation equipment, which comprises a crossbeam and a bearing frame, one end of the bearing frame is connected with the crossbeam, the other end is connected with an adjustable connecting assembly connected with a trailer, both ends of the crossbeam are detachably provided with extension pieces, one side of the crossbeam is provided with the bearing frame, the other side is provided with a plurality of buffer assemblies, and the other ends of the buffer assemblies are connected with pulling plates; wherein a first bevel surface is arranged at one end of the extension piece close to the crossbeam, a second bevel surface is arranged at one end of the crossbeam, and the first bevel surface and the second bevel surface are complementarily arranged to splice and connect the crossbeam and the extension piece. The application has the functions of realizing the length expansion of the pulling frame, adapting the connection, towing more stably, and improving the generality and safety.

Description

Technical Field

[0001] This application relates to the technical field of container transport equipment, and in particular to a container tractor. Background Technology

[0002] In the container shipping industry, the tow bar is the main transitional component connecting the container and the trailer. Its function is to transmit the traction force of the trailer and ensure stable transport of the container in scenarios such as highways and ports. Currently, the crossbeam length of traditional container tow bars is mostly fixed, and it cannot be flexibly adjusted according to the width of the container and the connection spacing of the trailer. When dealing with different specifications of containers or different types of trailers, it is necessary to replace the tow bar with the corresponding size, resulting in poor equipment versatility and increased transportation costs. Some extendable tow bars use straight end face splicing, and the stress is concentrated at the splice, which is prone to loosening and deformation under long-term hauling vibration, affecting the hauling safety. Utility Model Content

[0003] In order to improve the problem that the crossbeam length of container tractor frames is mostly fixed and cannot be flexibly adjusted according to the width of the container and the connection spacing of the trailer, and that some extendable tractor frames use straight end face splicing, which is prone to loosening and deformation during long-term tractor vibration, affecting the tractor safety, this application provides a container tractor frame.

[0004] This application provides a container traction frame, which adopts the following technical solution: A container tractor includes a crossbeam and a support frame. One end of the support frame is connected to the crossbeam, and the other end is connected to an adjustable connecting component that is connected to a trailer. Extensions are detachably provided at both ends of the crossbeam. The support frame is installed on one side of the crossbeam, and several buffer components are provided on the other side. The other end of the buffer components is connected to a traction plate. The extension member has a first oblique cut surface near one end of the crossbeam, and the crossbeam has a second oblique cut surface at one end. The first oblique cut surface and the second oblique cut surface are complementary to each other so that the crossbeam and the extension member are spliced ​​together.

[0005] By adopting the above technical solution, the crossbeam provides a lateral support foundation for the towing frame, and the load-bearing frame achieves a stable connection with the crossbeam and transmits traction force to the trailer. Adjustable connection components adapt to the connection requirements of different trailers, improving installation flexibility. The extensions at both ends of the crossbeam are spliced ​​together using complementary first and second oblique cut surfaces, significantly increasing the contact area and making the stress distribution at the splice more uniform, effectively avoiding stress concentration. Compared with traditional flat-end splicing structures, this improves connection stability and structural strength. The buffer component absorbs vibration and impact during towing, protecting the container and towing frame structure, and the towing plate is used for reliable connection with the container. This structure achieves the functions of expandable towing frame length, adaptable connection, and more stable towing, improving versatility and safety compared to traditional fixed towing frames.

[0006] Optionally, a first mounting hole is arranged on the first beveled surface, and a second mounting hole is arranged on the second beveled surface. A first mounting member is threadedly connected to the first mounting hole. The first mounting member passes through the first mounting hole and the second mounting hole in sequence, and extends out of the second mounting hole to be connected to a first locking member to fix the crossbeam and the extension member.

[0007] By adopting the above technical solution, the arrangement of the first and second mounting holes, together with the threaded connection of the first mounting part and the first locking part, achieves mechanical fastening between the extension part and the crossbeam, so that the splicing structure of the complementary beveled surface will not undergo relative displacement when subjected to force, further enhancing the reliability of the connection and ensuring the structural stability of the splice in heavy-duty towing scenarios. At the same time, the detachable connection method also facilitates later maintenance and replacement and adjustment of the extension part.

[0008] Optionally, a first connecting plate is installed on one end of the extension member near the crossbeam, and a second connecting plate is installed on one end of the crossbeam near the extension member. The first connecting plate has a first connecting hole, and the second connecting plate has a second connecting hole. A second mounting member is threaded into the second connecting hole. The second mounting member passes through the first connecting hole and the second connecting hole in sequence, and extends out of the second connecting hole to be connected to a second locking member to fix the crossbeam and the extension member. The first mounting member and the second mounting member are offset.

[0009] By adopting the above technical solution, the cooperation between the first connecting plate and the second connecting plate, combined with the staggered first mounting component and the second mounting component, forms a fastening structure, which distributes the load at the splice and improves the fatigue resistance of the connection part, so that the traction frame can still maintain a stable connection during long-term and frequent use. At the same time, the staggered setting facilitates the installation and maintenance of the corresponding mounting components and avoids interference.

[0010] Optionally, the connecting assembly includes an adjusting cylinder and a connecting rod installed at one end of the support frame. The connecting rod is axially sleeved inside the adjusting cylinder to adjust the length of the connecting assembly. The adjusting cylinder has multiple adjusting holes arranged axially. A third mounting member passes through the adjusting holes. The connecting rod has a through hole. The third mounting member passes through the adjusting holes and the through hole, and extends out of the adjusting holes to be connected to a third locking member to fix the adjusting cylinder and the connecting rod.

[0011] By adopting the above technical solution, the sleeve structure of the connecting rod and the adjusting cylinder, together with multiple sets of adjusting holes and through holes, realizes the adjustment of the length of the connecting component, which can be adapted to the connection point position of different trailers, solving the problem of poor adaptability of traditional fixed length connection structures; the fastening method of the third mounting part and the third locking part ensures the stability of the length after adjustment and improves the reliability of the connection.

[0012] Optionally, a bearing ring connected to the trailer is installed at the other end of the adjusting cylinder, and an auxiliary wheel with lifting function is detachably installed on one side of the outer side of the bearing frame.

[0013] By adopting the above technical solution, the load-bearing ring provides a connection interface for the trailer, which facilitates quick installation and disassembly; the detachable and liftable auxiliary wheels can be lowered to support the tow frame when the tow frame is not connected to the trailer or when it is moved and adjusted, making it easy for the operator to push and adjust the position. During towing, the auxiliary wheels can be retracted to avoid friction with the ground and affect towing efficiency.

[0014] Optionally, the buffer assembly includes a first support plate and a second support plate. The first support plate is installed on the side of the support frame near the traction plate, and the second support plate is installed on the side of the traction plate near the support frame. An outer sleeve is installed on the first support plate, and a telescopic rod is provided on the second support plate. The telescopic rod is sleeved inside the outer sleeve, and the other end of the telescopic rod is connected to a limit plate. A spring is installed inside the outer sleeve, and the other end of the spring is connected to the other end of the limit plate.

[0015] By adopting the above technical solution, the sleeve connection between the outer sleeve and the telescopic rod, combined with the buffer structure of the spring and the limiting plate, forms an elastic buffer structure. During the towing process, when the container is subjected to road bumps or the impact of starting and braking, the spring can absorb and buffer the impact force, preventing the impact force from being directly transmitted to the connection between the towing frame and the container, effectively protecting the structural components, extending the service life of the equipment, and also improving the transportation safety of the goods inside the container.

[0016] Optionally, the support frame includes a first support rod and a second support rod, one end of the first support rod and one end of the second support rod are connected to a base plate, and the other ends of the second support rod and the first support rod are both connected to the crossbeam.

[0017] By adopting the above technical solution, the first support rod and the second support rod form a triangular support structure through the base plate, and both ends are connected to the crossbeam, so that the force of the load-bearing frame is more evenly distributed on the crossbeam, improving the structural strength and deformation resistance of the load-bearing frame, and ensuring that the structure can maintain stability when transmitting large traction forces.

[0018] Optionally, a reinforcing rod is provided on the base plate, the other end of the reinforcing rod is connected to the crossbeam, and the reinforcing rod is inclined relative to the support frame.

[0019] By adopting the above technical solution, the inclined reinforcing rod forms an oblique support between the base plate and the crossbeam, which further strengthens the connection structure between the bearing frame and the crossbeam. The traction force on the bearing frame is distributed and transmitted through the reinforcing rod, which improves the torsional and bending resistance of the entire traction frame. This allows the traction frame to maintain structural stability under complex working conditions, effectively improving the overall reliability and service life.

[0020] In summary, this application includes at least one of the following beneficial technical effects: The towing frame achieves flexible length expansion and stable and reliable connection through the splicing of extension parts with complementary beveled surfaces and two fastening structures, which greatly improves the adaptability to containers of different widths and trailers with different spacing. Compared with the traditional fixed length towing frame, it improves versatility, while the splicing points are evenly stressed and have high structural strength, which can meet the needs of heavy-duty towing. The adjustable length of the connecting components solves the adaptation problem for different trailer connection point positions, and the elastic buffer structure of the buffer components can effectively absorb the vibration and impact during transportation, protecting the container, towing frame structure and internal cargo, and improving transportation safety and equipment lifespan. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is an exploded view of the crossbeam and its two end extensions in the embodiment of this application; Figure 3 This is a schematic diagram of the structure of the crossbeam, extension member, and buffer assembly in the embodiments of this application; Figure 4 yes Figure 3 Sectional view of AA; Figure 5 This is a structural schematic diagram of the support frame and connecting components in the embodiments of this application.

[0022] Explanation of reference numerals in the attached figures: 1. Crossbeam; 11. Second oblique section; 111. Second mounting hole; 12. Second connecting plate; 121. Second connecting hole; 2. Extension piece; 21. First oblique section; 211. First mounting hole; 22. First mounting piece; 23. First locking piece; 24. First connecting plate; 241. First connecting hole; 25. Second mounting piece; 26. Second locking piece; 3. Bearing frame; 31. First support rod; 32. Second support rod; 33. Base plate; 34. Reinforcing rod; 4. Connecting assembly; 41. Adjusting cylinder; 411. Adjusting hole; 412. Third mounting piece; 413. Bearing ring; 42. Connecting rod; 421. Third locking piece; 5. Buffer assembly; 51. First support plate; 52. Second support plate; 53. Outer sleeve; 54. Telescopic rod; 55. Limiting plate; 56. Spring; 6. Traction plate. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0027] This application discloses a container tractor frame, referring to... Figure 1 and Figure 2 The container tractor includes a crossbeam 1 and a support frame 3. One end of the support frame 3 is connected to the crossbeam 1, and the other end is connected to an adjustable connecting component 4 that is connected to the trailer. Both ends of the crossbeam 1 are detachably equipped with extension parts 2. The support frame 3 is installed on one side of the crossbeam 1, and several buffer components 5 are provided on the other side. The other end of the buffer components 5 is connected to a traction plate 6. The extension member 2 has a first oblique surface 21 near one end of the crossbeam 1, and a second oblique surface 11 is provided at one end of the crossbeam 1. The first oblique surface 21 and the second oblique surface 11 are complementary and are spliced ​​together by the crossbeam 1 and the extension member 2.

[0028] In this towing frame, the crossbeam 1 is the main load-bearing structure, providing a lateral support foundation and connecting the load-bearing frame 3, the extension 2, and the buffer assembly 5. It can be used to transfer and distribute traction force and load during towing. The load-bearing frame 3 can stably transfer the load of the crossbeam 1 to the connecting assembly 4 through its own rod-like or frame structure, thereby forming a power connection with the trailer and ensuring the stability and continuity of traction force transmission.

[0029] The connecting component 4 connects the support frame 3 to the trailer. Its adjustable length adapts to different trailer connection point positions, solving the problem of poor adaptability in traditional fixed-length connection structures. This makes the towing frame compatible with various types of trailers, improving the equipment's versatility. The adjusted length can be fixed by a locking structure, ensuring stable connection during transport and preventing transport failure due to loose connections. The extension component 2, through splicing with the complementary first oblique surface 21 and second oblique surface 11 of the crossbeam 1, extends the length of the crossbeam 1, sharing the load of the crossbeam 1 and significantly improving the towing frame's adaptability to containers of different sizes. Compared to the traditional fixed-length crossbeam 1, this enhances its versatility.

[0030] Specifically, the first oblique surface 21 and the second oblique surface 11 serve as splicing interfaces for the extension 2 and the crossbeam 1, respectively. The complementary oblique surface structure enables precise splicing of the two. Compared with the traditional flat end splicing, the contact area is larger and the force at the splice is more uniform, which effectively improves the structural strength and deformation resistance at the splice and ensures that the extension 2 will not be relatively displaced or loosened with the crossbeam 1 during heavy-load towing.

[0031] The buffer assembly 5, through its elastic or damping structure, cushions the impact force between the container and the towing frame, protecting the cargo inside the container and the towing frame structure. This prevents damage to the cargo or structural fatigue caused by road bumps and the impact of starting and braking, thus improving the safety of the hauling process and extending the service life of the equipment. The towing plate 6 transfers the cushioned load to the container, allowing the shock absorption effect of the buffer assembly 5 to directly act on the container, ensuring the stability of cargo transportation. The reliable connection between the towing plate 6 and the container prevents the container from shifting or falling off during hauling.

[0032] The container tractor unit achieves a reliable power connection between the container and the trailer through the combined action of the crossbeam 1, the load-bearing frame 3, and the adjustable connecting component 4. The detachable extension component 2 allows for adaptation to containers of different widths, improving the equipment's versatility and reducing transportation costs. The splicing structure of the first and second oblique surfaces 21 and 11 of the complementary equipment, along with the mechanical fastening of multiple components, ensures the tractor unit maintains structural stability under complex conditions such as heavy loads and vibrations, preventing loosening at joints and structural deformation, thus enhancing the safety of the tractor process and extending the equipment's lifespan. The shock absorption protection of the buffer component 5 ensures the safety of the container and cargo during tractor transport.

[0033] In this application, reference is made to Figure 2 A first mounting hole 211 is arranged on the first oblique surface 21, and a second mounting hole 111 is arranged on the second oblique surface 11. A first mounting member 22 is threadedly connected to the first mounting hole 211. The first mounting member 22 passes through the first mounting hole 211 and the second mounting hole 111 in sequence, and extends out of the second mounting hole 111 to be connected to a first locking member 23 to fix the crossbeam 1 and the extension member 2. The first mounting hole 211 provides a threaded connection base for the first mounting member 22, ensuring that the first mounting member 22 can be accurately inserted and aligned with the second mounting hole 111, thereby achieving mechanical fastening between the extension member 2 and the crossbeam 1. The arrangement makes the fastening force evenly distributed on the oblique surface, avoiding localized force concentration.

[0034] The second mounting hole 111 is set one-to-one with the first mounting hole 211. The second mounting hole 111 cooperates with the first mounting hole 211 to allow the first mounting component 22 to pass through the corresponding two oblique cut surfaces of the extension component 2 and the crossbeam 1 to form a stable connection. This avoids uneven stress on the first mounting component 22 due to hole position deviation and ensures the structural stability of the splice during heavy-duty transportation. The first mounting component 22 is threaded to engage with the first mounting hole 211. It passes through the first mounting hole 211 and the second mounting hole 111 in sequence, tightly fitting the oblique cut surfaces of the extension component 2 and the crossbeam 1. This forms a rigid connection between the extension component 2 and the crossbeam 1, significantly improving the shear strength and tensile strength of the splice and ensuring that the extension component 2 will not slide relative to the crossbeam 1 under heavy-duty container transportation scenarios. The first locking member 23, through its cooperation with the first mounting member 22 (such as the cooperation of a nut and a bolt), applies a preload and locks the position of the first mounting member 22, preventing the first mounting member 22 from loosening during towing vibrations. This further strengthens the fastening effect of the first mounting member 22, avoids loosening of the threaded connection due to long-term vibrations, and improves the safety of the traction frame. An extension member 2 is fitted with a first connecting plate 24 near the end of the crossbeam 1, and a second connecting plate 12 is fitted with the end of the crossbeam 1 near the end of the extension member 2. The first connecting plate 24 has a first connecting hole 241, and the second connecting plate 12 has a second connecting hole 121. A second mounting member 25 is internally threaded into the second connecting hole 121. The second mounting member 25 passes through the first connecting hole 241 and the second connecting hole 121 sequentially, and extends out of the second connecting hole 121 to connect with a second locking member 26 to fix the crossbeam 1 and the extension member 2. The first mounting member 22 and the second mounting member 25 are offset. The first connecting plate 24 serves as an auxiliary load-bearing structure connecting the extension member 2 to the crossbeam 1, forming complementary support with the first oblique surface 21 of the extension member 2. It also increases the contact area between the extension member 2 and the crossbeam 1, further dispersing the traction force and vibration load during towing, preventing excessive local stress at the joint between the extension member 2 and the crossbeam 1, and improving the overall structure's resistance to deformation.

[0035] The second connecting plate 12 serves as an auxiliary load-bearing structure at one end of the crossbeam 1. It corresponds to and cooperates with the first connecting plate 24, providing an installation reference for the second connecting hole 121. Simultaneously, it works in conjunction with the oblique surface of the crossbeam 1 to support the first connecting plate 24, ensuring a tight fit and significantly improving the structural stability of the joint, thus preventing connection failure due to long-term towing. The first connecting hole 241 provides a through-path for the second mounting component 25, ensuring that the second mounting component 25 can smoothly pass through the first connecting plate 24 and align with the second connecting hole 121, preventing uneven stress on the mounting component due to hole misalignment. The second connecting hole 121 corresponds one-to-one with the first connecting hole 241, and the second mounting component 25 is positioned and fixed through a threaded connection, ensuring that the second mounting component 25 can penetrate both connecting plates and form a stable connection, preventing the second mounting component 25 from loosening during towing vibrations.

[0036] The second mounting component 25 tightly secures the first connecting plate 24 to the second connecting plate 12, while simultaneously forming a staggered layout with the beveled mounting component, achieving double fastening. This ensures that the fastening force is evenly distributed across different planes, significantly improving the shear and tensile strength of the joint and ensuring that the mounting component will not be damaged due to concentrated stress under heavy container transport scenarios. The second locking component 26 provides final locking to the inserted second mounting component 25, applying pre-tightening force through its cooperation with the second mounting component 25 to prevent the threads of the second mounting component 25 from loosening during long-term vibration. Even under complex road conditions, this maintains the stability of the joint, reducing safety hazards caused by loose connections.

[0037] Reference Figure 1 , Figure 3 and Figure 4 The buffer assembly 5 includes a first support plate 51 and a second support plate 52. The first support plate 51 is installed on the side of the support frame 3 near the traction plate 6, and the second support plate 52 is installed on the side of the traction plate 6 near the support frame 3. An outer sleeve 53 is installed on the first support plate 51, and a telescopic rod 54 is provided on the second support plate 52. The telescopic rod 54 is fitted inside the outer sleeve 53, and the other end of the telescopic rod 54 is connected to a limit plate 55. A spring 56 is installed inside the outer sleeve 53, and the other end of the spring 56 is connected to the other end of the limit plate 55. The first support plate 51 provides a stable mounting base for the outer sleeve 53, evenly distributing the traction force and vibration load transmitted by the support frame 3 to the outer sleeve 53, while also bearing the reaction force of the buffer assembly 5. By increasing the contact area, the first support plate 51 avoids stress concentration at the connection point between the outer sleeve 53 and the support frame 3, ensuring that the buffer assembly 5 can remain stably fixed under long-term vibration conditions.

[0038] The second support plate 52 provides an installation reference for the telescopic rod 54, guiding the container vibration load transmitted by the traction plate 6 to the telescopic rod 54, while simultaneously feeding back the buffered force to the traction plate 6, reducing the impact of vibration on the container and its internal cargo, and improving transportation safety. The outer sleeve 53 provides axial sliding space for the telescopic rod 54, limiting its lateral displacement. Simultaneously, the outer sleeve 53 protects the spring 56 from external interference, ensuring stable operation of the spring 56 and thus guaranteeing the long-term reliable operation of the buffer assembly 5. Under vibration load, the telescopic rod 54 extends and retracts axially along the outer sleeve 53, converting the impact transmitted by the traction plate 6 into the compression and extension motion of the spring 56, preventing instantaneous impact damage to the support frame 3 or the traction plate 6, and improving the overall fatigue resistance of the traction frame.

[0039] The limiting plate 55 converts the telescopic movement of the telescopic rod 54 into the deformation of the spring 56, and also limits the extension and retraction stroke of the telescopic rod 54, preventing it from detaching from the outer sleeve 53 and causing the buffer function to fail. This ensures that the buffer assembly 5 works stably within a reasonable range and improves structural safety. The spring 56 absorbs the vibration and impact energy transmitted by the telescopic rod 54 through its own elastic deformation. When compressed, it stores elastic potential energy, and when the impact weakens, it releases the potential energy to push the telescopic rod 54 back to its original position. This effectively absorbs the impact energy generated by road bumps and starting and braking, minimizing the vibration amplitude, protecting the goods inside the container from damage, and reducing the damage to the towing frame structure from vibration, thus extending the service life of the towing frame.

[0040] Reference Figure 1 and Figure 5The connecting assembly 4 includes an adjusting cylinder 41 and a connecting rod 42 installed at one end of the support frame 3. The connecting rod 42 is axially sleeved inside the adjusting cylinder 41 to adjust the length of the connecting assembly 4. Multiple adjusting holes 411 are arranged axially on the adjusting cylinder 41, and a third mounting member 412 passes through each adjusting hole 411. A through hole is provided on the connecting rod 42. The third mounting member 412 passes through the adjusting holes 411 and the through hole, and extends out of the adjusting holes 411 to connect with a third locking member 421 to fix the adjusting cylinder 41 and the connecting rod 42. The adjusting cylinder 41 provides axial sliding space for the connecting rod 42, while also bearing and transmitting traction force. The adjusting holes 411 on its outer wall provide point support for length fixation, allowing the connecting assembly 4 to be flexibly adjusted according to the trailer connection point position, significantly improving the versatility of the towing frame and avoiding replacement costs due to different trailer types.

[0041] The connecting rod 42 can slide within the adjusting cylinder 41 to change the overall length of the connecting assembly 4. The through hole and the adjusting hole 411 provide a fixed point for the third mounting part 412, ensuring that the third mounting part 412 can pass through the adjusting cylinder 41 and the connecting rod 42, fixing them at the adjusted length position, realizing dynamic adjustment of the length of the connecting assembly 4, ensuring precise docking with the trailer connection point, avoiding uneven traction force transmission caused by misalignment, and improving the stability of the towing process.

[0042] The third mounting piece 412 passes through the adjustment hole 411 and the through hole, tightly locking the adjusted cylinder 41 and the connecting rod 42 to the appropriate length. Simultaneously, it transmits the traction force between the two, creating a rigid connection between the adjustment cylinder 41 and the connecting rod 42. This significantly improves the vibration resistance of the connecting assembly 4, ensuring stable length locking during towing in complex road conditions and preventing safety hazards caused by loose connections. The third locking piece 421 provides a final lock to the third mounting piece 412 after it has been installed. By cooperating with the third mounting piece 412, it applies a pre-tightening force to prevent the threads of the third mounting piece 412 from loosening during long-term vibration, thus improving the safety and durability of the towing frame. In this application, to improve the connection strength of the connecting assembly 4, two third mounting pieces 412 can be installed through the corresponding adjustment hole 411 and through hole.

[0043] The other end of the adjusting cylinder 41 is equipped with a load-bearing ring 413 that connects to the trailer. An auxiliary wheel with a lifting mechanism is detachably mounted on one side of the support frame 3. The load-bearing ring 413 provides a connection point for the trailer, receives the traction force transmitted by the adjusting cylinder 41, and reliably transfers it to the trailer. Simultaneously, the load-bearing ring 413 is compatible with commonly used hooks or connectors on trailers, allowing for quick docking with connecting parts of different trailers and avoiding docking delays caused by interface incompatibility. The annular structure of the load-bearing ring 413 distributes force evenly, dispersing the localized pressure applied by the trailer hook, preventing deformation at the docking point due to stress concentration, ensuring the stability of traction force transmission, and improving the safety of the towing process.

[0044] The auxiliary wheels serve as auxiliary support and moving components for the tow frame. When the tow frame is not connected to the trailer or needs to be adjusted, the auxiliary wheels are lowered to support the weight of the tow frame, making it easier for the operator to move it. After the tow frame is connected to the trailer, the auxiliary wheels can be raised or removed to prevent them from rubbing against the ground and affecting towing, allowing the operator to independently adjust the position of the tow frame. The detachable design facilitates later maintenance or replacement.

[0045] refer to Figure 1 and Figure 5 The support frame 3 includes a first support rod 31 and a second support rod 32. One end of the first support rod 31 and one end of the second support rod 32 are connected through a base plate 33. The other ends of the second support rod 32 and the first support rod 31 are both connected to the crossbeam 1. The first support rod 31 bears and transmits the traction force and load from the base plate 33 to the crossbeam 1. At the same time, it cooperates with the second support rod 32 to form a symmetrical support structure, so that the support frame 3 is balanced by forces, which improves the torsional and bending resistance of the overall structure and ensures that it can remain stable under heavy-duty towing scenarios.

[0046] The second support rod 32 and the first support rod 31 are structurally symmetrical and jointly bear the traction force transmitted by the base plate 33 and the weight load of the container, avoiding fatigue damage caused by long-term stress on a single rod and ensuring the continuity and stability of traction force transmission. The second support rod 32, together with the first support rod 31, forms a triangular support base frame, enhancing the structural stability and load transmission capacity of the load-bearing frame 3. The base plate 33 converges and fixes one end of the first support rod 31 and the second support rod 32, forming a unified force-bearing node, and simultaneously bearing the traction force transmitted from the connecting assembly 4, which is then evenly distributed to the crossbeam 1 through the two support rods. This avoids local structural overload caused by disordered force dispersion, improves the overall structural rigidity of the load-bearing frame 3, and ensures the structural stability of the load-bearing frame 3.

[0047] A reinforcing rod 34 is provided on the base plate 33. The other end of the reinforcing rod 34 is connected to the crossbeam 1, and the reinforcing rod 34 is inclined relative to the support frame 3. The reinforcing rod 34 is an inclined support structure of the support frame 3, which supplements the support strength of the first support rod 31 and the second support rod 32, shares the traction force and load transmitted by the base plate 33, and can effectively resist the lateral and longitudinal shear forces, avoid deformation due to stress concentration at the connection between the base plate 33 and the crossbeam 1, and ensure the structural stability under heavy-duty towing or complex road conditions.

[0048] The implementation process of a container towing traction frame according to an embodiment of this application is as follows: Based on the width of the container to be transported, determine whether extension member 2 needs to be installed. If the length needs to be extended, align and fit the first beveled surface 21 of extension member 2 with the second beveled surface 11 of crossbeam 1, so that the first mounting hole 211 corresponds to the second mounting hole 111, and the first connecting hole 241 corresponds to the second connecting hole 121 respectively; sequentially pass the first mounting member 22 through the first mounting hole 211 and the second mounting hole 111 and fix it with the first locking member 23, and pass the second mounting member 25 through the first connecting hole 241 and the second connecting hole 121 and fix it with the second locking member 26 to complete the fastening of extension member 2 to crossbeam 1.

[0049] According to the position of the trailer connection point, pull the connecting rod 42 to slide inside the outer sleeve 53 to adjust the overall length of the connecting assembly 4; when the through hole of the connecting rod 42 is aligned with the adjustment hole 411 at a suitable position on the adjustment cylinder 41, the third mounting part 412 is inserted through the adjustment hole 411 and the through hole, and locked by the third locking part 421 to ensure that the length of the connecting assembly 4 is fixed.

[0050] If it is necessary to move the tow frame to the side of the container, lower the auxiliary wheels on the side of the support frame 3 so that the auxiliary wheels contact the ground to support the weight of the tow frame; after pushing the tow frame to the designated position, if no further movement is required, the auxiliary wheels can be raised or removed to avoid friction with the ground during towing.

[0051] Align the towing plate 6 of the towing frame with the connection point of the container, and secure them together with bolts or other fasteners. At this point, the first support plate 51 of the buffer assembly 5 and the carrier frame 3, and the second support plate 52 and the towing plate 6 are pre-installed in place, and the spring 56 is in its natural state, ensuring that the buffer assembly 5 can function properly after the towing plate 6 is connected to the container. Connect the load-bearing ring 413 at the end of the adjusting cylinder 41 with the hook component of the trailer, ensuring that the hook is fully engaged in the load-bearing ring 413.

[0052] Start the trailer to begin towing and observe the working status of the towing frame in real time. When traversing uneven road surfaces or during starting and braking, the spring 56 of the buffer assembly 5 will absorb the impact through extension and contraction. The proper functioning of the buffer can be determined by observing the slight displacement of the towing plate 6.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A container tractor for connecting to a trailer, characterized in that: It includes a crossbeam (1) and a support frame (3). One end of the support frame (3) is connected to the crossbeam (1), and the other end is connected to an adjustable connecting component (4) that is connected to a trailer. Both ends of the crossbeam (1) are detachably provided with extension pieces (2). The support frame (3) is installed on one side of the crossbeam (1), and several buffer components (5) are provided on the other side. The other end of the buffer components (5) is connected to a traction plate (6). The extension member (2) has a first oblique surface (21) near one end of the crossbeam (1), and the crossbeam (1) has a second oblique surface (11) at one end. The first oblique surface (21) and the second oblique surface (11) are complementary and are spliced ​​together by the crossbeam (1) and the extension member (2).

2. The container traction frame according to claim 1, characterized in that: The first oblique surface (21) is provided with a first mounting hole (211), and the second oblique surface (11) is provided with a second mounting hole (111). The first mounting hole (211) is internally threaded to a first mounting member (22). The first mounting member (22) passes through the first mounting hole (211) and the second mounting hole (111) in sequence, and extends out of the second mounting hole (111) to be connected to a first locking member (23) to fix the crossbeam (1) and the extension member (2).

3. The container traction frame according to claim 2, characterized in that: The extension member (2) is equipped with a first connecting plate (24) near the end of the crossbeam (1), and the crossbeam (1) is equipped with a second connecting plate (12) near the end of the extension member (2). The first connecting plate (24) has a first connecting hole (241), and the second connecting plate (12) has a second connecting hole (121). The second connecting hole (121) is internally threaded with a second mounting member (25). The second mounting member (25) passes through the first connecting hole (241) and the second connecting hole (121) in sequence, and extends out of the second connecting hole (121) to be connected with a second locking member (26) to fix the crossbeam (1) and the extension member (2). The first mounting member (22) and the second mounting member (25) are offset.

4. The container traction frame according to claim 1, characterized in that: The connecting assembly (4) includes an adjusting cylinder (41) and a connecting rod (42) installed at one end of the support frame (3). The connecting rod (42) is axially sleeved in the adjusting cylinder (41) to adjust the length of the connecting assembly (4). A plurality of adjusting holes (411) are provided on the adjusting cylinder (41) and arranged axially along the adjusting cylinder (41). A third mounting member (412) is inserted into the adjusting hole (411). A through hole is provided on the connecting rod (42). The third mounting member (412) passes through the adjusting hole (411) and the through hole, and extends out of the adjusting hole (411) to be connected to a third locking member (421) to fix the adjusting cylinder (41) and the connecting rod (42).

5. The container traction frame according to claim 4, characterized in that: The other end of the adjusting cylinder (41) is equipped with a bearing ring (413) connected to the trailer, and an auxiliary wheel with lifting function is detachably installed on one side of the bearing frame (3).

6. The container traction frame according to claim 1, characterized in that: The buffer assembly (5) includes a first support plate (51) and a second support plate (52). The first support plate (51) is installed on the side of the support frame (3) near the traction plate (6), and the second support plate (52) is installed on the side of the traction plate (6) near the support frame (3). An outer sleeve (53) is installed on the first support plate (51), and a telescopic rod (54) is provided on the second support plate (52). The telescopic rod (54) is sleeved inside the outer sleeve (53), and the other end of the telescopic rod (54) is connected to a limiting plate (55). A spring (56) is installed inside the outer sleeve (53), and the other end of the spring (56) is connected to the other end of the limiting plate (55).

7. The container traction frame according to claim 1, characterized in that: The support frame (3) includes a first support rod (31) and a second support rod (32). One end of the first support rod (31) and one end of the second support rod (32) are connected through a base plate (33). The other end of the second support rod (32) and the other end of the first support rod (31) are both connected to the crossbeam (1).

8. The container traction frame according to claim 7, characterized in that: A reinforcing rod (34) is provided on the base plate (33), the other end of the reinforcing rod (34) is connected to the crossbeam (1), and the reinforcing rod (34) is inclined relative to the support frame (3).

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