A chassis for a transport trailer

Abstract

The present invention belongs to the technical field of trailers, and specifically relates to a trailer chassis, which includes a frame; multiple pairs of Mecanum wheel systems; multiple pairs of unpowered traction wheel systems; wherein, each unpowered traction wheel system includes: a support mechanism, an unpowered traction wheel, and a lifting and adjusting mechanism. The present invention realizes rapid transfer traction under the traction of a towing locomotive through the unpowered traction wheel system to complete medium and long-distance consignment work, realizes precise movement and positioning in a narrow space through the Mecanum wheel system to complete the hanging work, and then adjusts the lifting of the unpowered traction wheel through the lifting and adjusting mechanism, so as to control the chassis to lift and realize the automatic switching of the two wheel systems. It can adapt to complex and changeable working environments, and not only has the advantages of low equipment hanging height, high positioning accuracy, and flexibility, but also has the advantages of convenient operation and high transportation transfer efficiency, improving the working efficiency of the entire set of equipment and greatly reducing the difficulty of manual operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of trailers, and particularly relates to a chassis of a transport trailer. Background Art

[0002] A transport trailer is a special vehicle that needs to be towed by a tractor. With the characteristic of high load-bearing capacity, it has been widely used in the field of equipment transportation, and can effectively achieve medium and long-distance towing transportation, meeting the need for rapid transfer of goods.

[0003] However, although the existing transport trailers have many advantages in cargo transportation, their maneuverability is poor when performing precise hanging operations in narrow spaces; specifically, it is difficult for them to achieve precise movement and positioning in a limited space, thus unable to adapt to complex and changeable working environments. This not only greatly increases the operation difficulty, but also directly leads to a decrease in the equipment hanging efficiency, thereby affecting the overall work efficiency and transportation cost. Summary of the Invention

[0004] The purpose of the present invention is to provide a chassis of a transport trailer, which solves the technical problems of low walking positioning accuracy, weak maneuverability and inconvenient space operation of the transport trailer in the prior art.

[0005] In a first aspect, the present invention discloses a chassis of a transport trailer, comprising:

[0006] A frame;

[0007] Multiple pairs of Mecanum wheel systems, which are respectively installed at both ends of the frame, and each pair of the Mecanum wheel systems is oppositely arranged on both sides of the frame;

[0008] Multiple pairs of unpowered traction wheel systems, which are respectively installed at both ends of the frame, and each pair of the unpowered traction wheel systems is oppositely arranged on both sides of the frame;

[0009] Wherein, each of the unpowered traction wheel systems includes:

[0010] A support mechanism;

[0011] An unpowered traction wheel, which is installed on the support mechanism;

[0012] A lifting adjustment mechanism, which is installed between the frame and the support mechanism and is used to control the lifting of the unpowered traction wheel.

[0013] This application uses a non-powered traction wheel system to perform rapid transfer traction under the traction of a traction locomotive, enabling medium- and long-distance consignment work. It uses a Mecanum wheel system to accurately move and position in a narrow space to complete the hanging and mounting work. Then, the non-powered traction wheels are lifted and adjusted through a lifting adjustment mechanism, which can control the chassis to lift and achieve automatic switching between the two wheel systems. It can adapt to complex and changeable working environments and not only has the advantages of low height for equipment hanging and mounting, high positioning accuracy, and flexibility, but also has the advantages of convenient operation and high transportation and transfer efficiency, improving the working efficiency of the entire set of equipment and greatly reducing the difficulty of manual operation.

[0014] Based on the above technical solutions, the solution of this application can be further improved as follows:

[0015] Preferably, the vehicle frame includes:

[0016] Two main longitudinal beams, arranged horizontally and spaced side by side;

[0017] Multiple flat cross beams, arranged horizontally and located between the two main longitudinal beams, and spaced along the axis direction of the main longitudinal beams;

[0018] Multiple groups of secondary longitudinal beams, arranged horizontally and respectively located between adjacent two flat cross beams, and the secondary longitudinal beams in each group are spaced along the axis direction of the flat cross beam;

[0019] Two groups of side cross beams, arranged horizontally and respectively located outside the two main longitudinal beams, and the side cross beams in each group are spaced along the axis direction of the main longitudinal beam; With this solution, the structural strength, load-bearing capacity, and lightweight are ensured, and the vehicle frame is designed as a concave structure, making the hanging and mounting area in the middle spacious, ensuring that during the hanging and mounting operation, sufficient safety distances can be maintained between all parts of the vehicle frame and the equipment main body, thus avoiding any interference in space. There is also an installation space for a set of hanging and mounting mechanisms left on each side of the hanging and mounting area, enabling double hanging on one vehicle, thereby improving the efficiency of equipment hanging and mounting.

[0020] Preferably, the vehicle frame includes:

[0021] Two support frames, arranged horizontally and respectively located in the middle of the outside of the two main longitudinal beams, and the two ends are respectively connected to the adjacent side cross beams, used to jointly form a placement area; With this solution, two independent placement areas are formed on both sides of the vehicle frame, with stable structure and strong load-bearing capacity, which can be used for the placement and fixation of power batteries and electronic control devices, ensuring the stability and safety of these key components during vehicle operation, improving the structural compactness of the whole vehicle, greatly optimizing the space utilization rate, and avoiding unnecessary space waste.

[0022] Preferably, the Mecanum wheel system includes:

[0023] Mecanum wheel;

[0024] Platform board, installed on the side of the vehicle frame;

[0025] Installation bottom board, arranged above the platform board;

[0026] Rotary drive assembly, installed on the installation bottom board and in transmission connection with the Mecanum wheel;

[0027] Vertical guiding assembly, installed between the platform board and the installation bottom board;

[0028] Multiple shock absorption assemblies, respectively installed at both ends of the installation bottom board and connected to the platform board; With this solution, it can absorb and disperse the impact and vibration from the road surface, protect the system from damage, and even on an uneven road surface, it can ensure that each Mecanum wheel can land normally and there will be no situation where a certain Mecanum wheel is suspended and slips, ensuring the walking positioning accuracy.

[0029] Preferably, the vertical guiding assembly includes:

[0030] T-shaped guide rail, vertically arranged and installed on the installation bottom board;

[0031] Guide rail slider, vertically arranged and installed on the top surface of the platform board, and a T-shaped chute adapted to the T-shaped guide rail is provided on the side;

[0032] Wear-resistant gasket, installed at the bottom of the T-shaped chute; With this solution, stable guiding and precise movement in the vertical direction are achieved, the cooperation between components is firm, the structural strength is high, the stability and reliability are improved, it can meet the use requirements under complex working conditions, and the friction and wear are small, and the service life is long.

[0033] Preferably, the shock absorption assembly includes:

[0034] Fixed block, fixedly connected to the installation bottom board;

[0035] First nut, arranged above the fixed block;

[0036] First spring, constrained between the fixed block and the platform board;

[0037] First bolt, the screw of which passes through the platform board, the first spring and the fixed block in sequence from bottom to top and is threadedly connected to the first nut; With this solution, the stability and reliability of the connection are ensured, and it has the advantages of compact structure, firm connection, strong bearing capacity and long service life, and is convenient for installation and manufacturing, and the comprehensive use effect is good, providing a strong guarantee for the long-term stable operation of the equipment.

[0038] Preferably, the lifting and adjusting mechanism includes:

[0039] A protective cover, installed on the side of the vehicle frame and located above the support mechanism;

[0040] A lifting oil cylinder, installed on the top surface of the support mechanism, and the piston rod is connected to the protective cover;

[0041] A plurality of guide seats, installed on the top surface of the support mechanism and arranged around the lifting oil cylinder;

[0042] A plurality of guide rods, corresponding to the guide seats one by one, installed in the protective cover, and vertically slidably matched with the corresponding guide seats; Adopting this solution plays a role of protection and isolation, avoiding foreign objects or dust from falling into the system, and also ensuring the stability and accuracy of the lifting process.

[0043] Preferably, the support mechanism includes:

[0044] A top plate;

[0045] Two side plates, oppositely arranged on both sides of the bottom surface of the top plate;

[0046] A support plate, provided at one end of the two side plates;

[0047] A concave plate, with both sides respectively fitting against the outer sides of the two side plates, hinged through a support shaft, and an unpowered traction wheel is rotatably connected to the inner side;

[0048] A handbrake assembly, installed on the concave plate and corresponding to the unpowered traction wheel;

[0049] A connecting plate, provided at the end of the concave plate and corresponding to the support plate;

[0050] A second nut, arranged above the support plate;

[0051] A second spring, constrained between the second nut and the support plate;

[0052] A second bolt, the screw of which sequentially passes through the connecting plate, the support plate and the second spring from bottom to top and is threadedly connected to the second nut; Adopting this solution ensures the structural strength and load-bearing capacity, and can perform buffering and shock absorption, so as to avoid large bumps of the vehicle body during the traction and transportation process and ensure the stability of the loaded goods during the transportation process.

[0053] Preferably, the support mechanism further includes:

[0054] A convex shaft, vertically arranged and provided on the bottom surface of the top plate;

[0055] The rotating disk is rotatably sleeved on the convex shaft and is arranged between the two side plates;

[0056] The thrust ball bearing is coaxially arranged with the convex shaft and is arranged between the top plate and the rotating disk; With this solution, the support mechanism not only has the original support and connection functions, but also increases the ability of rotation adjustment, enabling the unpowered traction wheel to flexibly adjust the direction, and the overall structure is firmly connected, with smooth and stable rotation, and can be used stably for a long time.

[0057] Preferably, both of the two side plates are fixedly connected to the top plate; With this solution, the connection is ensured to be stable, and the overall structural strength is improved.

[0058] Through the above technical solutions, the present invention achieves the following beneficial effects:

[0059] 1. In this application, the unpowered traction wheel system is used to perform rapid transfer traction under the traction of a traction locomotive to realize medium and long-distance consignment work, the Mecanum wheel system is used to accurately move and position in a narrow space to complete the hanging work, and then the lifting adjustment mechanism is used to lift and adjust the unpowered traction wheel, so as to control the chassis to lift and realize the automatic switching of the two wheel systems. It can adapt to complex and changeable working environments, and not only has the advantages of low working height, high positioning accuracy and flexibility of the equipment hanging work, but also has the advantages of convenient operation and high transportation transfer efficiency, improving the working efficiency of the whole set of equipment and greatly reducing the difficulty of manual operation;

[0060] 2. This application ensures the structural strength, load-bearing capacity and light weight of the frame, and designs the frame as a concave structure, making the hanging area in the middle spacious, ensuring that during the hanging operation, sufficient safety distances can be maintained between all parts of the frame and the equipment main body, thus avoiding any interference in space, and also leaving an installation space for a set of hanging mechanisms on each side of the hanging area, enabling double hanging on one vehicle, thereby improving the efficiency of equipment hanging. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0062] Figure 1 It is a schematic structural diagram of the chassis of the transport trailer described in the specific embodiment of the present invention;

[0063] Figure 2 For Figure 1 the schematic structural diagram of the frame in the shown transport trailer chassis;

[0064] Figure 3 is Figure 1 The top view of the trailer chassis shown after removing one end top cover;

[0065] Figure 4 is Figure 3 The enlarged schematic view of part A in

[0066] Figure 5 is Figure 1 The structural schematic view of the Mecanum wheel system in the trailer chassis shown;

[0067] Figure 6 is Figure 5 The structural schematic view of the mounting base plate in the Mecanum wheel system shown;

[0068] Figure 7 is Figure 1 The structural schematic view of the non-powered traction wheel system in the trailer chassis shown;

[0069] Figure 8 is Figure 7 The sectional schematic view of the non-powered traction wheel system shown;

[0070] Figure 9 is Figure 7 The structural schematic view of the top plate in the non-powered traction wheel system shown;

[0071] Figure 10 is Figure 7 The structural schematic view of the concave plate in the non-powered traction wheel system shown;

[0072] Figure 11 is Figure 7 The structural schematic view of the rotating disk in the non-powered traction wheel system shown;

[0073] Figure 12 Another structural schematic view of the support mechanism in the specific embodiment of the present invention;

[0074] Figure 13 is Figure 1 The state schematic view of the trailer chassis when the traction wheel is lifted and retracted as shown;

[0075] Figure 14 is Figure 1 The state schematic view of the trailer chassis when the traction wheel is lowered and deployed as shown;

[0076] Figure 15 is Figure 1 The working state schematic view of the trailer chassis shown.

[0077] Explanation of reference numerals:

[0078] 1. Frame; 2. Mecanum wheel system; 3. Powerless traction wheel system;

[0079] 11. Main longitudinal beam; 12. Flat cross beam; 13. Secondary longitudinal beam; 14. Side cross beam; 15. Support frame; 16. Guide rail welding plate;

[0080] 21. Mecanum wheel; 22. Platform plate; 23. Installation base plate; 24. Rotary drive assembly; 25. Vertical guiding assembly; 26. Shock absorption assembly; 27. Top cover;

[0081] 31. Support mechanism; 32. Powerless traction wheel; 33. Lifting and adjusting mechanism;

[0082] 251. T-shaped guide rail; 252. Guide rail slider; 253. Wear-resistant gasket;

[0083] 261. Fixed block; 262. First nut; 263. First spring; 264. First bolt; 265. Split pin;

[0084] 311. Top plate; 312. Side plate; 313. Support plate; 314. Concave plate; 315. Handbrake assembly; 316. Connecting plate; 317. Second nut; 318. Second spring; 319. Second bolt; 31A. Convex shaft; 31B. Rotary disk; 31C. Thrust ball bearing; 31D. Deep groove ball bearing; 31E. Locking nut;

[0085] 331. Protective cover; 332. Lifting oil cylinder; 333. Guide seat; 334. Guide rod. Detailed implementation mode

[0086] Hereinafter, embodiments of the technical solution of the present invention will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0087] First of all, it should be noted that some orientation terms involved in the following description to clearly illustrate the technical solution of the present invention, such as the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are all the meanings analogized according to the normal orientation of the components in the trailer chassis. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present invention.

[0088] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features.

[0089] In this application, unless otherwise clearly stipulated and defined, the terms "installed" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and the specific embodiments.

[0091] Embodiment:

[0092] As Figure 1 shown, the embodiment of the present application discloses a chassis of a transport trailer, which can take into account both rapid transfer traction and precise walking and mounting. Its specific structure includes: a frame 1, multiple pairs of Mecanum wheel systems 2, and multiple pairs of unpowered traction wheel systems 3.

[0093] The frame 1 serves as the support and connection foundation of the entire chassis.

[0094] Multiple pairs of Mecanum wheel systems 2 are respectively installed at both ends of the frame 1, and each pair of Mecanum wheel systems 2 is relatively arranged on both sides of the frame 1, and is used to provide omnidirectional movement ability, so that the transport trailer can operate flexibly in a narrow or complex space.

[0095] Multiple pairs of unpowered traction wheel systems 3 are respectively installed at both ends of the frame 1, and each pair of unpowered traction wheel systems 3 is relatively arranged on both sides of the frame 1, and is used to realize the function of rapid transfer traction.

[0096] Exemplarily, both the Mecanum wheel system 2 and the unpowered traction wheel system 3 are provided with two pairs, which not only ensures the driving stability but also reduces the manufacturing cost. However, it is not limited to this, and there may be more pairs, and the specific number is not limited.

[0097] Among them, each unpowered traction wheel system 3 includes a support mechanism 31, an unpowered traction wheel 32, and a lifting and adjusting mechanism 33, and the specific settings are as follows:

[0098] The support mechanism 31 serves as the installation foundation of the unpowered traction wheel 32 and is used to provide stable support;

[0099] The unpowered traction wheel 32 is installed on the support mechanism 31 for realizing traction and dragging.

[0100] The lifting adjustment mechanism 33 is installed between the vehicle frame 1 and the support mechanism 31 for controlling the lifting of the unpowered traction wheel 32.

[0101] The working principle of the above technical solution is as follows:

[0102] When switching to the precise walking and hanging mode, as Figure 13 shown, the unpowered traction wheel system 3 is adjusted. Specifically, the support mechanism 31 is controlled to rise through the lifting adjustment mechanism 33, so that the unpowered traction wheel 32 is lifted and retracted until the unpowered traction wheel 32 leaves the ground and the Mecanum wheel system 2 touches the ground. At this time, by driving and controlling each Mecanum wheel system 2, the precise hanging operation in a narrow space can be realized.

[0103] When switching to the fast transfer traction mode, as Figure 14 shown, the unpowered traction wheel system 3 is adjusted. Specifically, the support mechanism 31 is controlled to descend through the lifting adjustment mechanism 33, so that the unpowered traction wheel 32 descends and unfolds until the unpowered traction wheel 32 touches the ground and the Mecanum wheel system 2 leaves the ground. At this time, by towing the transport trailer with a tractor, the fast transfer can be realized.

[0104] The present invention realizes the medium and long-distance consignment work through the fast transfer traction of the unpowered traction wheel system 3 under the traction of a traction locomotive, completes the hanging work through the precise movement and positioning of the Mecanum wheel system 2 in a narrow space, and then adjusts the lifting of the unpowered traction wheel 32 through the lifting adjustment mechanism 33, so as to control the lifting of the chassis and realize the automatic switching of the two wheel systems. It can adapt to complex and changeable working environments, and not only has the advantages of low working height, high positioning accuracy and flexibility of equipment hanging, but also has the advantages of convenient operation and high transport transfer efficiency, improving the working efficiency of the whole set of equipment and greatly reducing the manual operation difficulty.

[0105] In some embodiments, as Figure 2 and Figure 15 shown, the vehicle frame 1 includes: two main longitudinal beams 11, multiple flat cross beams 12, multiple groups of secondary longitudinal beams 13 and two groups of side cross beams 14, and the specific settings are as follows:

[0106] The two main longitudinal beams 11 are horizontally arranged and arranged side by side at intervals, serving as the main support structure;

[0107] The multiple flat cross beams 12 are horizontally arranged and arranged between the two main longitudinal beams 11 and arranged at intervals along the axis direction of the main longitudinal beams 11. They are used to connect the two main longitudinal beams 11 to enhance the lateral stability and bearing capacity;

[0108] Multiple groups of secondary longitudinal beams 13 are horizontally arranged and are respectively disposed between two adjacent flat cross beams 12 in one-to-one correspondence. Moreover, the secondary longitudinal beams 13 within each group are arranged at intervals along the axial direction of the flat cross beam 12. They are used to connect the flat cross beams 12 to enhance the longitudinal stability and load-bearing capacity.

[0109] Two groups of side cross beams 14 are horizontally arranged and are respectively disposed on the outer sides of the two main longitudinal beams 11. Moreover, the side cross beams 14 within each group are arranged at intervals along the axial direction of the main longitudinal beam 11 and are used to provide a stable support for the Mecanum wheel system 2 and the non-powered traction wheel system 3.

[0110] Specifically, both the main longitudinal beam 11 and the side cross beam 14 adopt rectangular tubes of the same specification of 120mm×60mm×4mm, thereby improving the structural regularity and ensuring the connection strength between the two; the flat cross beam 12 is composed of a channel steel and a high-strength steel plate welded together, ensuring the load strength.

[0111] Preferably, a guide rail welding plate 16 is provided on the top surface of the flat cross beam 12, and the top surface of the guide rail welding plate 16 has a T-shaped groove, which is used to facilitate the longitudinal adjustment and fixation of the bracket base.

[0112] Exemplarily, six flat cross beams 12 are provided; each group of secondary longitudinal beams 13 has two and is symmetric left and right; each group of side cross beams 14 has six, so that two wheel system installation areas are respectively formed at both ends of the vehicle frame 1.

[0113] Through the above structural design, the structural strength, load-bearing capacity and light weight are ensured, and the vehicle frame 1 is designed as a concave structure, making the middle hanging area spacious, ensuring that during the hanging operation process, sufficient safety distances can be maintained between all parts of the vehicle frame 1 and the equipment main body, thereby avoiding any interference in space. Moreover, installation spaces for a group of hanging mechanisms are left on both the left and right sides of the hanging area, enabling double hanging on one vehicle, thereby improving the equipment hanging efficiency.

[0114] On the basis of the above embodiments, as Figure 1 、 Figure 2 and Figure 15 shown, the vehicle frame 1 includes: two support frames 15, which are horizontally arranged and are respectively disposed in the middle of the outer sides of the two main longitudinal beams 11, and both ends are respectively connected to the adjacent side cross beams 14 and are used to jointly form a placement area.

[0115] Specifically, the support frame 15 is composed of two L-shaped channel steels and a plurality of strip plates; wherein, the plurality of strip plates are arranged at intervals between the two L-shaped channel steels.

[0116] With the above settings, two independent placement areas are formed on both sides of the vehicle frame 1. It has a stable structure and strong load-bearing capacity, and can be used for the placement and fixation of power batteries and electronic control devices, ensuring the stability and safety of these key components during vehicle operation, improving the structural compactness of the whole vehicle, greatly optimizing the space utilization rate, and avoiding unnecessary space waste.

[0117] In some embodiments, such as Figure 2 , Figure 5 and Figure 6 shown, the Mecanum wheel system 2 includes: Mecanum wheels 21, a platform plate 22, a mounting base plate 23, a rotary drive assembly 24, a vertical guiding assembly 25, and a plurality of shock-absorbing assemblies 26. Its specific settings are as follows:

[0118] The Mecanum wheel 21 has a unique roller layout and can achieve omnidirectional movement. Its specific structure belongs to the prior art, so it will not be elaborated here;

[0119] The platform plate 22 is installed on the side of the vehicle frame 1, and is specifically installed in the wheel system installation area surrounded by the main longitudinal beam 11 and two adjacent side cross beams 14, for providing stable support;

[0120] The mounting base plate 23 is arranged above the platform plate 22, for carrying other components;

[0121] The rotary drive assembly 24 is installed on the mounting base plate 23 and is in transmission connection with the Mecanum wheel 21, for driving the Mecanum wheel 21 to rotate;

[0122] The vertical guiding assembly 25 is installed between the platform plate 22 and the mounting base plate 23, ensuring that the mounting base plate 23 remains stable in the vertical direction and guaranteeing that the system will not deviate or shake during operation;

[0123] A plurality of shock-absorbing assemblies 26 are respectively installed at both ends of the mounting base plate 23 and are connected to the platform plate 22, for absorbing and dispersing the impact and vibration from the road surface and protecting the system from damage.

[0124] During operation, the rotary drive assembly 24 can drive the Mecanum wheel 21 to rotate, and the mounting base plate 23 can move up and down relative to the platform plate 22 through the vertical guiding assembly 25, and is flexibly connected to the platform plate 22 through the shock-absorbing assembly 26, thereby avoiding transmitting the impact and vibration from the road surface to the platform plate 22.

[0125] With the above settings, it can absorb and disperse the impact and vibration from the road surface, protect the system from damage, and even on an uneven road surface, it can ensure that each Mecanum wheel 21 can land normally and there will be no situation where a certain Mecanum wheel 21 is suspended and slips, guaranteeing the walking positioning accuracy.

[0126] Preferably, the Mecanum wheel system 2 further includes a top cover 27, which is arranged above the rest of the components and lapped on two adjacent side beams 14 for covering and protecting the components below, so as to avoid their being affected by the external environment.

[0127] Based on the above embodiments, as Figure 5 shown, the vertical guiding assembly 25 includes: a T-shaped guide rail 251, a guide rail slider 252 and a wear-resistant gasket 253, and their specific settings are as follows:

[0128] The T-shaped guide rail 251 is vertically arranged and installed on the mounting base plate 23;

[0129] The guide rail slider 252 is vertically arranged and installed on the top surface of the platform plate 22, and a T-shaped chute adapted to the T-shaped guide rail 251 is provided on the side surface;

[0130] The wear-resistant gasket 253 is installed at the bottom of the T-shaped chute and is made of a high-strength and high-wear-resistant material, such as copper, which can effectively reduce friction and wear, thereby extending the service life.

[0131] Preferably, as Figure 6 shown, a vertical installation groove is provided on the inner side surface of the mounting base plate 23 for limiting and installing the T-shaped guide rail 251, thereby improving the fastening of the connection between the two.

[0132] Through the further design of the vertical guiding assembly 25 above, stable guiding and precise movement in the vertical direction are achieved, the cooperation between components is firm, the structural strength is high, the stability and reliability are improved, the use requirements under complex working conditions can be met, and the friction and wear are small, and the service life is long.

[0133] Based on the above embodiments, as Figure 5 shown, the shock absorption assembly 26 includes: a fixed block 261, a first nut 262, a first spring 263 and a first bolt 264, and their specific settings are as follows:

[0134] The fixed block 261 is fixedly connected to the mounting base plate 23;

[0135] The first nut 262 is arranged above the fixed block 261, and its material and thread specification are both matched with the first bolt 264 to ensure the firmness and reliability of the connection;

[0136] The first spring 263 is constrained between the fixed block 261 and the platform plate 22;

[0137] The screw of the first bolt 264 passes through the platform plate 22, the first spring 263 and the fixed block 261 from bottom to top and is threadedly connected to the first nut 262.

[0138] Preferably, a flat washer is provided between the first nut 262 and the fixing block 261, and the flat washer is sleeved on the first bolt 264, which plays a role in avoiding hard connection, can buffer and shock-absorb, and improves stability.

[0139] Preferably, a plurality of card slots are formed at the top end of the first nut 262, and a split pin 265 is horizontally inserted at the top end of the first bolt 264, and the split pin 265 is engaged with the card slots, which avoids the occurrence of loosening or even loosening of the bolt under the action of factors such as impact and vibration, improves stability and reliability, and ensures that the component can work stably for a long time.

[0140] During operation, the mounting base plate 23 and the platform plate 22 are connected by the first bolt 264 and the fixing block 261, thus ensuring the connection firmness. When a certain Mecanum wheel 21 moves to the suspended area, the Mecanum wheel 21 drives the mounting base plate 23 to descend, the mounting base plate 23 drives the fixing block 261 to descend, and the fixing block 261 can apply a force to the first spring 263 to cause elastic deformation, so as to absorb and disperse these energies, play a role in buffering and shock-absorbing, and also avoid the occurrence of suspended slipping of the Mecanum wheel 21.

[0141] Through the above further design of the shock-absorbing component 26, the stability and reliability of the connection are ensured, and it has the advantages of compact structure, firm connection, strong bearing capacity and long service life, and is convenient for installation and manufacturing, with good comprehensive use effect, providing a strong guarantee for the long-term stable operation of the equipment.

[0142] In some embodiments, as Figure 2 、 Figure 7 and Figure 8 shown, the lifting and adjusting mechanism 33 includes: a protective cover 331, a lifting oil cylinder 332, a plurality of guide seats 333 and a plurality of guide rods 334, and its specific settings are as follows:

[0143] The protective cover 331 is installed on the side of the vehicle frame 1 and is located above the support mechanism 31, playing a protective role to prevent foreign objects or dust from the outside from falling in;

[0144] The lifting oil cylinder 332 is installed on the top surface of the support mechanism 31, and the piston rod is connected to the protective cover 331. Preferably, a threaded hole is provided at the top, and then it is fixed to the protective cover 331 through screws;

[0145] A plurality of guide seats 333 are installed on the top surface of the support mechanism 31 and are arranged around the lifting oil cylinder 332. Preferably, two are provided and are in a cylindrical structure;

[0146] A plurality of guide rods 334 correspond to the guide seats 333 one by one, are installed in the protective cover 331, and are in vertical sliding fit with the corresponding guide seats 333.

[0147] Exemplarily, two guiding seats 333 and two guiding rods 334 are provided respectively, and are symmetrically arranged on both sides of the lifting oil cylinder 332, thus ensuring uniform force; the guiding seat 333 is cylindrical and slidably sleeved on the corresponding guiding rod 334, improving the firmness of guiding.

[0148] During lifting adjustment, the lifting of the support mechanism 31 is realized by the telescopic movement of the piston rod of the lifting adjustment mechanism 33, and then through the vertical sliding fit of the guiding seat 333 and the guiding rod 334, the stability and accuracy of the lifting process are ensured.

[0149] Through the further design of the above-mentioned lifting adjustment mechanism 33, the functions of protection and isolation are achieved, preventing foreign objects or dust from the outside from falling into the system, and ensuring the stability and accuracy of the lifting process.

[0150] In some embodiments, as Figures 7 to 12 shown, the support mechanism 31 includes: a top plate 311, two side plates 312, a support plate 313, a concave plate 314, a handbrake assembly 315, a connecting plate 316, a second nut 317, a second spring 318 and a second bolt 319, and their specific settings are as follows:

[0151] The top plate 311 is the main load-bearing member, and its top surface is used to install the lifting adjustment mechanism 33;

[0152] The two side plates 312 are oppositely arranged on both sides of the bottom surface of the top plate 311, and are used to provide structural support;

[0153] The support plate 313 is arranged at one end of the two side plates 312, and preferably has a concave structure to enhance the structural strength and load-bearing capacity, and improve the connection firmness with the side plates 312;

[0154] The concave plate 314 is respectively attached to the outer sides of the two side plates 312 and is hinged through a support shaft, and a non-powered traction wheel 32 is rotatably connected to the inner side;

[0155] The handbrake assembly 315 is installed on the concave plate 314 and corresponds to the non-powered traction wheel 32, and is used to lock the non-powered traction wheel 32 when needed to prevent the vehicle from moving;

[0156] The connecting plate 316 is arranged at the end of the concave plate 314 and corresponds to the support plate 313;

[0157] The second nut 317 is arranged above the support plate 313;

[0158] The second spring 318 is constrained between the second nut 317 and the support plate 313;

[0159] The screw of the second bolt 319 sequentially passes through the connecting plate 316, the support plate 313 and the second spring 318 from bottom to top and is threadedly connected to the second nut 317.

[0160] It should be noted that the second nut 317, the second spring 318 and the second bolt 319 correspond to each other one by one, and can be set in two groups or more to further improve the buffer and shock absorption capacity, and specific settings are not limited.

[0161] Exemplarily, the unpowered traction wheel 32 is made of a core rubber wheel, which has the ability to be towed at a relatively fast speed, and can reduce vibration and impact to a certain extent, improving the driving stability.

[0162] The working principle of the above technical solution is as follows:

[0163] When the lifting and adjusting mechanism 33 drives the support mechanism 31 to descend to a certain height, the unpowered traction wheel 32 touches the ground and overcomes its own weight, realizing the jacking. Here, the stiffness of the second spring 318 is designed to match the entire load, and the pre-tightening force of the second spring 318 can be changed by adjusting the tightness of the second nut 317.

[0164] As Figure 7 and Figure 8 shown, both ends of the concave plate 314 form a set of lever mechanisms, and the hinge point is the lever fulcrum; therefore, when the grounded unpowered traction wheel 32 passes over a bumpy road surface, the load on the concave plate 314 will increase. Then, the concave plate 314 will rotate slightly counterclockwise around the support shaft, causing the chassis height to decrease slightly, and driving the connecting plate 316 to move downward. The connecting plate 316 will pull the second bolt 319, the second bolt 319 drives the second nut 317, and the second nut 317 applies a force to the second spring 318, causing it to undergo elastic deformation.

[0165] Through the above further design of the support mechanism 31, the structural strength and load-bearing capacity are guaranteed, and buffer and shock absorption can be carried out, so that during the traction and transportation process, large bumps of the vehicle body can be avoided, and the stability of the loaded goods during transportation is ensured.

[0166] On the basis of the above embodiment, the unpowered traction wheel system 3 is provided with two pairs, and a pair at the front end is set as a universal wheel, and a pair at the rear end is set as a fixed wheel.

[0167] If the unpowered traction wheel system 3 is configured as a universal wheel, as Figures 7 to 11 shown, the support mechanism 31 further includes: a convex shaft 31A, a rotating disk 31B and a thrust ball bearing 31C, and its specific settings are as follows:

[0168] The convex shaft 31A is arranged vertically and is provided on the bottom surface of the top plate 311, providing a stable rotation center;

[0169] The rotating disk 31B is rotatably sleeved on the convex shaft 31A and is arranged between the two side plates 312;

[0170] The thrust ball bearing 31C is arranged coaxially with the convex shaft 31A and is disposed between the top plate 311 and the rotating disk 31B.

[0171] Specifically, limiting ring grooves for installing the thrust ball bearing 31C are formed on the bottom surface of the top plate 311 and the top surface of the rotating disk 31B, thereby improving the installation stability and structural compactness.

[0172] Preferably, a deep groove ball bearing 31D is embedded in the bottom surface of the rotating disk 31B. The deep groove ball bearing is sleeved on the convex shaft 31A. Threads and keyway holes are provided at the bottom of the convex shaft 31A, and it is fixedly locked with a lock nut 31E and a brake washer, which improves the connection firmness and is convenient for disassembly, replacement.

[0173] Through the above settings, the support mechanism 31 not only has the original support and connection functions, but also increases the ability of rotation adjustment, enabling the non-powered traction wheel 32 to flexibly adjust the direction, and the overall structure is firmly connected, rotates smoothly and stably, and can be used stably for a long time.

[0174] If the non-powered traction wheel system 3 is configured as a fixed-direction wheel, as Figure 12 shown, both side plates 312 are fixedly connected to the top plate 311, which ensures the connection firmness and improves the overall structural strength.

[0175] In the description of the present invention, a large number of specific details are set forth. However, it is understood that the embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0176] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflicting with each other, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0177] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. A chassis of a transport trailer, characterized in that, include: Frame; Multiple pairs of Mecanum wheel systems are respectively installed at both ends of the frame, and each pair of Mecanum wheel systems are arranged on two sides of the frame opposite to each other; A plurality of pairs of unpowered traction wheel systems are respectively installed at both ends of the frame, and each pair of the unpowered traction wheel systems are arranged on two sides of the frame opposite to each other; Wherein, each of the unpowered traction wheel systems comprises: Support mechanism; an unpowered traction wheel, mounted on the supporting mechanism; A lifting and lowering adjustment mechanism is installed between the vehicle frame and the supporting mechanism, and is used to control the lifting and lowering of the unpowered traction wheel; The supporting mechanism comprises: roof; Two side panels are arranged oppositely on both sides of the bottom surface of the top panel; A support plate, provided at one end of the two side plates; The concave plate has two sides respectively fitted with the outer side surfaces of the two side plates and is hinged via a support shaft, and the inner side is rotatably connected to the unpowered traction wheel; a handbrake assembly, mounted on the concave plate and corresponding to the unpowered traction wheel; A connecting plate, provided at the end of the concave plate and corresponding to the supporting plate; a second nut, arranged above the support plate; a second spring constrained between the second nut and the support plate; A second bolt, the screw rod of which passes through the connecting plate, the supporting plate and the second spring in sequence from bottom to top and is then threadedly connected to the second nut; A convex shaft is arranged vertically and is provided on the bottom surface of the top plate; A rotating disk is rotatably sleeved on the convex shaft and is disposed between the two side plates; A thrust ball bearing is coaxially arranged with the convex shaft and is provided between the top plate and the rotating disk.

2. The trailer chassis according to claim 1, characterized in that, The frame comprises: Two main longitudinal beams, arranged horizontally and spaced side by side; A plurality of flat cross beams are arranged horizontally and disposed between the two main longitudinal beams and spaced apart along the axis of the main longitudinal beams; A plurality of groups of auxiliary longitudinal beams are arranged horizontally and are provided one by one between two adjacent flat beams, and the auxiliary longitudinal beams in each group are arranged at intervals along the axis direction of the flat beam; Two groups of side cross beams are arranged horizontally and are respectively arranged on the outsides of the two main longitudinal beams, and the side cross beams in each group are arranged at intervals along the axial direction of the main longitudinal beams.

3. The trailer chassis according to claim 2, characterized in that, The frame comprises: The two support frames are arranged horizontally and are respectively located in the middle of the outer sides of the two main longitudinal beams, and the two ends are respectively connected to the adjacent side cross beams to jointly form a placement area.

4. The trailer chassis according to claim 1, characterized in that, The Mecanum wheel system includes: Mecanum wheel; A platform plate is mounted on the side of the frame; An installation base plate is arranged above the platform plate; A rotary drive assembly is mounted on the mounting base and is drivingly connected to the Mecanum wheel; A vertical guide assembly is installed between the platform plate and the installation base plate; A plurality of shock absorbing components are respectively installed at two ends of the installation base plate and connected to the platform plate.

5. The trailer chassis according to claim 4, wherein The vertical guide assembly comprises: T-shaped guide rail, arranged vertically and mounted on the mounting base; The guide rail slide is arranged vertically and installed on the top surface of the platform plate, and a T-shaped slide groove adapted to the T-shaped guide rail is opened on the side; The wear-resistant gasket is installed at the bottom of the T-shaped slide groove.

6. The trailer chassis according to claim 4, characterized in that, The shock absorbing assembly comprises: Fixed block, fixedly connected to the installation base plate; First nut, arranged above the fixed block; First spring, constrained between the fixed block and the platform plate; First bolt, the screw rod of which passes through the platform plate, the first spring and the fixed block in sequence from bottom to top and is threadedly connected to the first nut.

7. The trailer chassis according to claim 1, characterized in that, The lifting and adjusting mechanism includes: Protective cover, installed on the side of the vehicle frame and located above the support mechanism; Lifting oil cylinder, installed on the top surface of the support mechanism, and the piston rod is connected to the protective cover; Multiple guide seats, installed on the top surface of the support mechanism and arranged around the lifting oil cylinder; Multiple guide rods, corresponding to the guide seats one by one, installed in the protective cover, and vertically slidably matched with the corresponding guide seats.

8. The trailer chassis according to claim 1, characterized in that, Both of the two side plates are fixedly connected to the top plate.

Images