Jointed dolly with concave bottom

Abstract

The utility model provides a kind of concave bottom type joint piggyback transport vehicle, including two concave bottom frames, two trays, two end bogies, joint connector and joint bogie, two concave bottom frames are connected by joint connector, two end bogies are respectively arranged at the bottom of one end of two concave bottom frames away from each other, and joint bogie is arranged at the bottom of one end of two end bogies close to each other;Each tray is installed in a concave bottom frame by hoisting mode, and each tray is used to carry a highway semi-trailer. Through the technical scheme of the application, the problem that the piggyback transport vehicle in the prior art is loaded with a highway semi-trailer by a trailer, resulting in a complex structure and prone to failure, can be solved.

Description

Technical Field

[0001] This utility model relates to the technical field of railway piggyback transport vehicles, and more specifically, to a concave-bottom articulated piggyback transport vehicle. Background Technology

[0002] Piggyback transport vehicles are specialized vehicles used for transporting semi-trailers between railways and highways. Because highway semi-trailers are relatively tall, piggyback transport vehicles employ a concave-bottom structure to avoid exceeding the clearance limits of railway locomotives and rolling stock. Currently, piggyback transport vehicles used in China typically consist of a concave underframe, articulated joints, a lifting and rotating system, a hydraulic and electrical system, joint bogies, end bogies, coupler buffer devices, and a braking system. The concave underframe rotates around the center of the articulated joint to a track, and the highway semi-trailer is towed onto and off the concave underframe by a trailer. The lifting and rotating of the concave underframe are both hydraulically and electrically driven. Because the highway semi-trailer is towed by a trailer, the vehicle's design, including the concave underframe lifting and rotating mechanism and the hydraulic and electrical system, results in a complex structure, poor reliability, and susceptibility to malfunctions. Utility Model Content

[0003] This utility model provides a concave-bottom articulated piggyback transport vehicle to solve the problem that existing piggyback transport vehicles, which load highway semi-trailers by towing trailers, have complex structures and are prone to failure.

[0004] To address the aforementioned problems, according to one aspect of this utility model, a concave-bottom articulated piggyback transport vehicle is provided, comprising two concave bottom frames, two pallets, two end bogies, an articulated connector, and an articulated bogie. The two concave bottom frames are connected by the articulated connector. The two end bogies are respectively disposed at the bottom of the ends of the two concave bottom frames that are far apart from each other, and the articulated bogie is disposed at the bottom of the ends of the two end bogies that are close to each other. Each pallet is removably installed in one of the concave bottom frames by means of hoisting, and each pallet is used to carry one highway semi-trailer.

[0005] Furthermore, the recessed base frame includes an end base frame, a middle base frame, two side walls, and multiple connecting plates. The end base frame and the middle base frame are connected to both ends of each side wall, the two side walls are arranged side by side, and multiple connecting plates are fixed at intervals between the bottom of the two side walls. An end bogie is provided on the lower side of the end base frame, and a joint bogie is provided on the lower side of the middle base frame.

[0006] Furthermore, the end frame includes a front beam, a bolster beam, and a rear beam arranged in parallel. The end frame also includes a front traction beam, and the front beam, bolster beam, and rear beam are fixedly connected to the front traction beam respectively. The end frame also includes two front inclined beams, which are located on both sides of the front traction beam. The front inclined beams are inclined relative to the front traction beam, and the front beam, bolster beam, and rear beam are fixedly connected to the front inclined beam respectively.

[0007] Furthermore, the central underframe includes a saddle crossbeam, rear diagonal braces, articulated crossbeams, a rear traction beam, and a saddle body. The saddle crossbeams and articulated crossbeams are arranged side by side and are connected to the rear traction beam. Two rear diagonal braces are located on both sides of the rear traction beam, and the two ends of the rear diagonal braces are connected to the saddle crossbeams and articulated crossbeams, respectively. The saddle body is fixed to the saddle crossbeams and is used to support the towing seat of the highway semi-trailer.

[0008] Furthermore, a concave joint is provided at the end of the middle base frame of one concave base frame, and a convex joint is provided at the end of the middle base frame of the other concave base frame. The concave joint and the convex joint are hinged together, and the concave joint and the convex joint form a joint connector.

[0009] Furthermore, the side wall includes an upper beam, a lower beam, an inner column, a side wall panel, an end lower cover plate, a middle lower cover plate, and positioning seats. The upper beam and the lower beam are connected by the side wall panel, the end lower cover plate, and the middle lower cover plate. The inner column is vertically arranged, and its two ends are fixedly connected to the upper beam and the lower beam, respectively. Multiple positioning seats are distributed on the upper beam and are used to position the pallet.

[0010] Furthermore, both the end bogies and the joint bogies are two-axle bogies, and an air brake device is installed on the end underframe to brake the end bogies.

[0011] Furthermore, the pallet includes a main body and two reinforcing beams. The main body is made of sheet metal bent into a concave bottom structure. The main body is used to support highway semi-trailers, and the two reinforcing beams are fixed to opposite sides of the upper part of the main body.

[0012] Furthermore, the bottom surface of the main body has multiple flanged holes to increase the friction with the wheels of the highway semi-trailer and to install a stop structure. The stop structure is used to prevent the wheels of the highway semi-trailer from rotating. A support plate is also fixed to the bottom surface of the main body.

[0013] Furthermore, the reinforcing beam has a slot and a lifting hole. The slot is used to engage with the recessed base frame for positioning, and the lifting hole is used to connect lifting equipment.

[0014] In this design, a pallet is used to support the highway semi-trailer, allowing the semi-trailer to be easily installed inside the recessed frame via hoisting. This reduces the load pressure at the joints and eliminates the need for lifting and rotating the recessed frame, thus avoiding the installation of lifting and rotating mechanisms and other drive systems. This simplifies the structure of the recessed articulated piggyback transport vehicle, lowers its usage requirements, improves operational convenience and safety, and reduces the vehicle failure rate. Attached Figure Description

[0015] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure of the concave-bottom articulated piggyback transport vehicle provided in an embodiment of the present invention is shown.

[0017] Figure 2 A schematic diagram of a highway semi-trailer placed on a pallet is shown;

[0018] Figure 3 It shows Figure 1 A top view of the concave bottom frame in a concave bottom articulated piggyback transport vehicle;

[0019] Figure 4 A schematic diagram of the end frame structure is shown;

[0020] Figure 5 A schematic diagram of the central base frame is shown;

[0021] Figure 6 A structural schematic diagram of the side walls and connecting plates is shown;

[0022] Figure 7 It shows Figure 6 Partial sectional view of the middle side wall and connecting plate at point AA;

[0023] Figure 8 It shows Figure 1 A top view of the pallet in a concave-bottom articulated piggyback transport vehicle;

[0024] Figure 9 A schematic diagram of the tray structure is shown;

[0025] Figure 10 It shows Figure 9 Partial sectional view of the middle side wall and connecting plate at BB.

[0026] The above figures include the following reference numerals:

[0027] 10. Recessed base frame; 11. End base frame; 111. Front beam; 112. Pillar beam; 113. Rear beam; 114. Front traction beam; 115. Front inclined beam; 116. Air brake device; 12. Middle base frame; 121. Saddle crossbeam; 122. Rear inclined brace; 123. Joint crossbeam; 124. Rear traction beam; 125. Saddle body; 13. Side wall; 131. Upper side beam; 132. Lower side beam; 133. Inner side column; 134. Side wall plate; 135. End side lower cover plate; 136. Middle side lower cover plate; 137. Positioning seat; 14. Connecting plate;

[0028] 20. Pallet; 21. Main body; 211. Flanged hole; 22. Reinforcing beam; 221. Slot; 222. Lifting hole;

[0029] 30. End bogies;

[0030] 40. Joint connector;

[0031] 50. Joint bogie;

[0032] 61. Stop structure; 62. Support plate. Detailed Implementation

[0033] The technical solutions in at least one embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. The following description of at least one embodiment is merely illustrative and is not intended to limit this application or its applications. Other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are all within the scope of protection of this application.

[0034] like Figures 1 to 10 As shown, an embodiment of this utility model provides a concave-bottom articulated piggyback transport vehicle, including two concave-bottom frames 10, two pallets 20, two end bogies 30, a joint connector 40, and a joint bogie 50. The two concave-bottom frames 10 are connected by the joint connector 40. The two end bogies 30 are respectively located at the bottom of the two concave-bottom frames 10 at the ends that are far apart from each other. The joint bogie 50 is located at the bottom of the two end bogies 30 at the ends that are close to each other. Each pallet 20 is removably installed in one concave-bottom frame 10 by means of hoisting, and each pallet 20 is used to carry one highway semi-trailer.

[0035] In this design, a pallet 20 is provided to support the highway semi-trailer, allowing the highway semi-trailer to be detachably installed inside the recessed frame 10 by hoisting. This reduces the load pressure at the joints and eliminates the need to lift and rotate the recessed frame 10, thus avoiding the installation of lifting and rotating mechanisms and other drive systems. This simplifies the structure of the recessed articulated piggyback transport vehicle, lowers its usage requirements, improves operational convenience and safety, and reduces the vehicle failure rate.

[0036] like Figure 3As shown, the recessed underframe 10 includes an end underframe 11, a middle underframe 12, two side walls 13, and multiple connecting plates 14. The end underframe 11 and the middle underframe 12 are connected to both ends of each side wall 13, respectively. The two side walls 13 are arranged side by side, and the multiple connecting plates 14 are fixed at intervals between the bottoms of the two side walls 13. An end bogie 30 is provided on the lower side of the end underframe 11, and a joint bogie 50 is provided on the lower side of the middle underframe 12. The combination of the side walls 13 and the connecting plates 14 adjusts the center of gravity distribution of the highway semi-trailer. By cooperating with other components, it forms a stable load-bearing platform, enhancing the overall rigidity and strength of the recessed underframe 10. At the same time, the end bogie 30 and the joint bogie 50 are respectively provided on the lower sides of the end underframe 11 and the middle underframe 12, improving the safety and flexibility of transportation.

[0037] like Figure 4 As shown, the end base frame 11 includes a front beam 111, a bolster beam 112, and a rear beam 113 arranged side by side in sequence. The end base frame 11 also includes a front traction beam 114. The front beam 111, bolster beam 112, and rear beam 113 are fixedly connected to the front traction beam 114, respectively. The end base frame 11 also includes two front inclined beams 115. The two front inclined beams 115 are located on both sides of the front traction beam 114. The front inclined beams 115 are inclined relative to the front traction beam 114. The front beam 111, bolster beam 112, and rear beam 113 are fixedly connected to the front inclined beams 115, respectively. By rationally arranging and connecting the front beam 111, the bolster beam 112, the rear beam 113, the front traction beam 114, and the front inclined beam 115 in the end frame 11, a stable frame structure is formed, ensuring the strength and stability of the vehicle end, enabling it to withstand greater impact forces and loads. In particular, the inclined setting of the front inclined beam 115 improves the vehicle's resistance to deformation when subjected to impact. This setting not only ensures the safety of the vehicle itself but also enhances the stability of the highway semi-trailer during transportation.

[0038] like Figure 5As shown, the central underframe 12 includes a saddle crossbeam 121, a rear diagonal brace 122, a joint crossbeam 123, a rear traction beam 124, and a saddle body 125. The saddle crossbeam 121 and the joint crossbeam 123 are arranged side by side and are both connected to the rear traction beam 124. The two rear diagonal braces 122 are located on both sides of the rear traction beam 124, and the two ends of the rear diagonal braces 122 are connected to the saddle crossbeam 121 and the joint crossbeam 123, respectively. The saddle body 125 is fixed to the saddle crossbeam 121 and is used to support the towing seat of the highway semi-trailer. The parallel arrangement of the saddle crossbeam 121 and the joint crossbeam 123, along with the reinforcement effect of the rear diagonal brace 122, together form a high-strength load-bearing area. The fixed connection between the saddle body 125 and the saddle crossbeam 121 ensures the stable support of the road semi-trailer traction seat. This structure reduces the load-bearing pressure at the joint and improves the safety and stability of the concave-bottom jointed piggyback transport vehicle.

[0039] In some embodiments, a concave joint is provided at the end of the middle base frame 12 of one concave base frame 10, and a convex joint is provided at the end of the middle base frame 12 of the other concave base frame 10. The concave joint and the convex joint are hinged together, forming a joint connector 40. The hinge between the concave joint and the convex joint provides the flexibility required for vehicle rotation while maintaining the stability of the connection. This design simplifies the connection process, improves the reliability and speed of the connection, and greatly improves operational efficiency.

[0040] like Figure 6 , Figure 7 As shown, the side wall 13 includes an upper beam 131, a lower beam 132, an inner column 133, a side wall panel 134, an end lower cover plate 135, a middle lower cover plate 136, and positioning seats 137. The upper beam 131 and the lower beam 132 are connected to the side wall panel 134, the end lower cover plate 135, and the middle lower cover plate 136. The inner column 133 is vertically arranged, and its two ends are fixedly connected to the upper beam 131 and the lower beam 132, respectively. Multiple positioning seats 137 are distributed on the upper beam 131 and are used to position the pallet 20. The connection between the upper beam 131 and the lower beam 132 forms the main structure of the side wall 13, while the positioning seat 137 ensures the accurate placement of the pallet 20 on the recessed base frame 10. This structure not only improves the structural strength of the vehicle, but also takes into account the requirements of strength, stability and accurate positioning of the pallet 20, while simplifying the loading and unloading process of the pallet 20 and improving the work efficiency.

[0041] like Figure 1 As shown, both the end bogie 30 and the joint bogie 50 are two-axle bogies. An air brake device 116 is installed on the end underframe 11, which is used to brake the end bogie 30.

[0042] In existing technologies, semi-trailers are typically towed by trailers. The rear wheels of these semi-trailers are close to the joint, resulting in significant joint loads. Therefore, three- or four-axle bogies are often used. However, three- or four-axle bogies suffer from poor dynamic performance, high wear, and difficult maintenance. This solution uses a pallet 20 to support the semi-trailer, allowing it to be easily removed and installed inside the recessed frame via hoisting. This reduces the load pressure at the joint and avoids the need for a three- or four-axle bogie at the joint. Both the end bogies 30 and the joint bogies 50 are two-axle bogies, improving the safety and reliability of the recessed-bottom articulated piggyback transport vehicle, facilitating vehicle inspection and maintenance, and reducing the vehicle's weight. The air brake device 116 ensures safe braking during rail transport, improving operational convenience and safety, and reducing the vehicle's failure rate.

[0043] like Figure 9 As shown, the pallet 20 includes a main body 21 and two reinforcing beams 22. The main body 21 is made of sheet metal bent into a concave bottom structure. The main body 21 is used to support the highway semi-trailer. The two reinforcing beams 22 are respectively fixed to opposite sides of the upper part of the main body 21. The concave bottom structure design of the pallet 20 matches the concave bottom frame 10, ensuring the stability and safety of the highway semi-trailer during the lifting process. The setting of the reinforcing beams 22 increases the load-bearing capacity and structural stability of the pallet 20, enabling the highway semi-trailer to be loaded onto the pallet 20 quickly and accurately, and improving the reliability of loading, unloading and transportation.

[0044] like Figure 2 , Figure 10 As shown, the bottom surface of the main body 21 has multiple flanged holes 211 to increase the friction with the wheels of the semi-trailer and to install a stop structure 61. The stop structure 61 is used to prevent the wheels of the semi-trailer from rotating. A support plate 62 is also fixed to the bottom surface of the main body 21. The flanged holes 211 and the stop structure 61 increase the stability of the semi-trailer on the pallet 20, preventing slippage and rotation during transportation. The fixed installation of the support plate 62 enhances the load-bearing capacity of the main body 21, ensures the stable fixation of the semi-trailer on the recessed underframe 10, improves safety during transportation, and reduces the vehicle failure rate.

[0045] like Figure 2 , Figure 9 As shown, the reinforcing beam 22 has a slot 221 and a lifting hole 222. The slot 221 is used for limiting engagement with the recessed base frame 10, and the lifting hole 222 is used for connecting lifting equipment. The slot 221 engages with the positioning seat 137 on the recessed base frame 10 to form a reliable limiting structure, improving the accurate positioning and stable placement of the pallet 20 on the recessed base frame 10. The lifting hole 222 is the connection point between the lifting equipment and the pallet 20, facilitating the lifting and transfer of the pallet 20. This design simplifies the loading and unloading process and improves operational efficiency and safety.

[0046] The above descriptions are merely some embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0047] The technical features of the embodiments described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification.

[0048] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as exemplary only and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0050] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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 on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0051] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0052] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application.

Claims

1. A concave-bottomed articulated piggyback transport vehicle, characterized in that, It includes two recessed base frames (10), two trays (20), two end bogies (30), a joint connector (40), and a joint bogie (50). The two recessed base frames (10) are connected by the joint connector (40). The two end bogies (30) are respectively located at the bottom of the two recessed base frames (10) at the ends that are far apart from each other. The joint bogie (50) is located at the bottom of the two end bogies (30) at the ends that are close to each other. Each tray (20) is removably installed in one of the recessed base frames (10) by means of hoisting. Each tray (20) is used to carry a highway semi-trailer.

2. The concave-bottom articulated piggyback transport vehicle according to claim 1, characterized in that, The recessed base frame (10) includes an end base frame (11), a middle base frame (12), two side walls (13) and multiple connecting plates (14). The end base frame (11) and the middle base frame (12) are respectively connected to the two ends of each side wall (13). The two side walls (13) are arranged side by side. The multiple connecting plates (14) are fixed at intervals between the bottoms of the two side walls (13). The end bogie (30) is provided on the lower side of the end base frame (11), and the joint bogie (50) is provided on the lower side of the middle base frame (12).

3. The concave-bottom articulated piggyback transport vehicle according to claim 2, characterized in that, The end frame (11) includes a front beam (111), a pillow beam (112), and a rear beam (113) arranged side by side in sequence. The end frame (11) also includes a front traction beam (114). The front beam (111), the pillow beam (112), and the rear beam (113) are fixedly connected to the front traction beam (114) respectively. The end frame (11) also includes two front inclined beams (115). The two front inclined beams (115) are located on both sides of the front traction beam (114). The front inclined beams (115) are inclined relative to the front traction beam (114). The front beam (111), the pillow beam (112), and the rear beam (113) are fixedly connected to the front inclined beams (115) respectively.

4. The concave-bottom articulated piggyback transport vehicle according to claim 2, characterized in that, The central underframe (12) includes a saddle crossbeam (121), a rear diagonal brace (122), a joint crossbeam (123), a rear traction beam (124), and a saddle body (125). The saddle crossbeam (121) and the joint crossbeam (123) are arranged side by side. Both the saddle crossbeam (121) and the joint crossbeam (123) are connected to the rear traction beam (124). The two rear diagonal braces (122) are located on both sides of the rear traction beam (124). The two ends of the rear diagonal braces (122) are connected to the saddle crossbeam (121) and the joint crossbeam (123), respectively. The saddle body (125) is fixed to the saddle crossbeam (121) and is used to support the traction seat of the highway semi-trailer.

5. The concave-bottom articulated piggyback transport vehicle according to claim 2, characterized in that, A concave joint is provided at the end of the middle base frame (12) of one of the concave base frames (10), and a convex joint is provided at the end of the middle base frame (12) of the other concave base frame (10). The concave joint and the convex joint are hinged together, and the concave joint and the convex joint form the joint connector (40).

6. The concave-bottom articulated piggyback transport vehicle according to claim 2, characterized in that, The side wall (13) includes an upper beam (131), a lower beam (132), an inner column (133), a side wall panel (134), an end lower cover plate (135), a middle lower cover plate (136), and a positioning seat (137). The upper beam (131) and the lower beam (132) are connected to the side wall panel (134), the end lower cover plate (135), and the middle lower cover plate (136). The inner column (133) is vertically arranged, and the two ends of the inner column (133) are fixedly connected to the upper beam (131) and the lower beam (132), respectively. A plurality of positioning seats (137) are distributed on the upper beam (131) and are used to position the pallet (20).

7. The concave-bottom articulated piggyback transport vehicle according to claim 2, characterized in that, Both the end bogie (30) and the joint bogie (50) are two-axle bogies. An air brake device (116) is provided on the end base frame (11) for braking the end bogie (30).

8. The concave-bottom articulated piggyback transport vehicle according to claim 1, characterized in that, The pallet (20) includes a main body (21) and two reinforcing beams (22). The main body (21) is made of sheet metal bent into a concave bottom structure. The main body (21) is used to support the highway semi-trailer. The two reinforcing beams (22) are respectively fixed to the opposite sides of the upper part of the main body (21).

9. The concave-bottom articulated piggyback transport vehicle according to claim 8, characterized in that, The bottom surface of the main body (21) has multiple flanged holes (211) for increasing the friction with the wheels of the highway semi-trailer and for installing a stop structure (61). The stop structure (61) is used to prevent the wheels of the highway semi-trailer from rotating. The bottom surface of the main body (21) is also fixed with a support plate (62).

10. The concave-bottom articulated piggyback transport vehicle according to claim 9, characterized in that, The reinforcing beam (22) has a slot (221) and a lifting hole (222). The slot (221) is used to limit the fit with the recessed base frame (10), and the lifting hole (222) is used to connect the lifting equipment.

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