CN110884511A

CN110884511A - Piggyback transport vehicle

Info

Publication number: CN110884511A
Application number: CN201911222589.9A
Authority: CN
Inventors: 王洪昆; 杨晓健; 方琪琦; 辛民; 卢宇星; 王文刚; 边志宏; 王蒙; 沈彩瑜; 董超; 袁博; 吴荣坤; 李华; 郑和平
Original assignee: China Shenhua Energy Co Ltd; CRRC Qiqihar Rolling Stock Co Ltd; Shenhua Rail and Freight Wagons Transport Co Ltd
Current assignee: China Shenhua Energy Co Ltd; CRRC Qiqihar Rolling Stock Co Ltd; Shenhua Rail and Freight Wagons Transport Co Ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-03-17

Abstract

The invention provides a piggyback transport vehicle. The piggyback transport vehicle comprises: the movable sliding table is pivotally connected with the end underframe; the movable sliding table is provided with an unfolding position and a retracting position along the rotation direction of the movable sliding table, and when the movable sliding table is positioned at the unfolding position, the movable sliding table is spliced with the end part chassis to form a supporting and guiding structure; the supporting guide structure is provided with a supporting surface and a guide groove; the supporting device is arranged on the concave underframe body and comprises a supporting wheel, and at least part of the peripheral surface of the supporting wheel is abutted against the supporting surface; the guide device is arranged on the concave underframe body and is positioned below the supporting device, the guide device comprises a guide piece, and at least part of the guide piece extends into the guide groove. The technical scheme of the invention solves the problem that how to reliably and stably move out the concave underframe of the piggyback transport vehicle along the end underframe and the movable sliding table in the prior art.

Description

Piggyback transport vehicle

Technical Field

The invention relates to the technical field of transportation equipment, in particular to a piggyback transport vehicle.

Background

Piggyback transportation is a transportation mode used for road truck or semitrailer road-rail combined transportation.

In the related art, a piggyback transport vehicle generally includes an end underframe, a movable sliding table and a concave underframe, and in order to facilitate the sinking and sinking of the underframe on a highway truck or a semi-trailer, the movable sliding table needs to be controlled to be unfolded relative to the end underframe, and then the concave underframe is controlled to move out along the end underframe and the movable sliding table by taking a bogie center plate as a rotation center to complete the actions of lifting and the like, so that the sinking and sinking of the underframe on the highway truck or the semi-trailer can be.

Therefore, there is a need to optimize the structure of the piggyback transport vehicle to ensure that the female chassis can be reliably and smoothly moved out along the end chassis and the moving ramp.

Disclosure of Invention

The invention mainly aims to provide a piggyback transport vehicle to solve the problem of how to reliably and stably move out a concave underframe of the piggyback transport vehicle along an end underframe and a movable sliding table in the prior art.

In order to achieve the above object, the present invention provides a piggyback transport vehicle comprising: the movable sliding table is pivotally connected with the end underframe; the movable sliding table is provided with an unfolding position and a retracting position along the rotation direction of the movable sliding table, and when the movable sliding table is positioned at the unfolding position, the movable sliding table is spliced with the end part chassis to form a supporting and guiding structure; the supporting guide structure is provided with a supporting surface and a guide groove; the supporting device is arranged on the concave underframe body and comprises a supporting wheel, and at least part of the peripheral surface of the supporting wheel is abutted against the supporting surface; the guide device is arranged on the concave underframe body and is positioned below the supporting device, the guide device comprises a guide piece, and at least part of the guide piece extends into the guide groove.

Further, the supporting and guiding structure comprises a supporting plate extending along the horizontal direction, and a first guiding plate and a second guiding plate which are arranged on the lower surface of the supporting plate at intervals, wherein the first guiding plate and the second guiding plate are arranged in an arc shape; the upper end face of the supporting plate forms a supporting face, and the first guide plate, the second guide plate and the supporting plate enclose a guide groove.

Further, the guide member is clearance-fitted to the groove wall surface of the guide groove.

Further, the guide member is a guide wheel; the guiding device further comprises: the guide frame is fixedly connected with the concave underframe body; the guide shaft is arranged on the guide frame, the axis of the guide shaft extends along the vertical direction, and the guide wheel is pivotally sleeved on the guide shaft.

Furthermore, the guide frame comprises a connecting plate extending along the horizontal direction, and a mounting hole extending along the vertical direction is formed in the connecting plate; the guide shaft comprises a first shaft section, a second shaft section and a third shaft section which are sequentially connected, the area of the radial section of the first shaft section, the area of the radial section of the second shaft section and the area of the radial section of the third shaft section are sequentially reduced, and a first stop surface is formed between the first shaft section and the second shaft section; the second shaft section penetrates through the mounting hole, and the first stop surface is matched with the upper end surface of the connecting plate in a stop way; the guide wheel is pivotally sleeved on the first shaft section; the radial section of the second shaft section is non-circular in shape; the outer peripheral surface of the third shaft section is provided with a thread structure; the guide device further comprises a fastener, the fastener is in threaded fit with the third shaft section, and the guide shaft is installed on the guide frame.

Further, the second shaft section has a square shape in radial section, and the center line of the second shaft section is parallel to the axis of the first shaft section to change the position of the axis of the first shaft section by rotating the second shaft section.

Further, the circumferential surface of the second shaft section with the square radial section comprises a first assembling surface, a second assembling surface, a third assembling surface and a fourth assembling surface; the distance between the axis of the first shaft segment and the first assembling surface is d1, the distance between the axis of the first shaft segment and the second assembling surface is d2, the distance between the axis of the first shaft segment and the third assembling surface is d3, and the distance between the axis of the first shaft segment and the fourth assembling surface is d 4; wherein d1 < d2 < d3 < d 4.

Furthermore, the guide shaft also comprises a fourth shaft section, the fourth shaft section is connected with the first shaft section and is positioned on one side of the first shaft section, which is far away from the second shaft section, and the diameter of the fourth shaft section is larger than that of the first shaft section; the guide wheel is provided with an assembly hole, the assembly hole comprises a first hole section and a second hole section which are communicated, and the diameter of the first hole section is larger than that of the second hole section; the fourth shaft section is located at the first hole section, and the first shaft section is located at the second hole section.

Furthermore, the guide frame also comprises a reinforcing rib plate, and the reinforcing rib plate is connected with the concave underframe body and the connecting plate.

Further, the supporting device further comprises: the support frame is fixedly connected with the concave underframe body; the supporting shaft is installed on the supporting frame, the axis of the supporting shaft extends along the horizontal direction, and the supporting wheel is pivotally sleeved on the supporting shaft.

Furthermore, the support frame comprises an upper cover plate, a first vertical plate and a second vertical plate which are arranged on the lower surface of the upper cover plate at intervals; a fixing blind hole is formed in the surface, facing the second vertical plate, of the first vertical plate, and a fixing through hole opposite to the fixing blind hole is formed in the second vertical plate; the upper cover plate and/or the first vertical plate are/is fixedly connected with the concave underframe body; the supporting shaft penetrates through the fixing through hole and the supporting wheel and then extends into the fixing blind hole; the supporting device also comprises a stop plate and a connecting piece, and a limit groove extending along the radial direction of the supporting shaft is formed in the peripheral surface of the supporting shaft; at least part of the stop plate extends into the limit groove, the second vertical plate is also provided with a first connecting hole which is arranged at an interval with the fixed through hole, and the stop plate is provided with a second connecting hole which is arranged opposite to the first connecting hole; the limiting groove is positioned on one side of the second vertical plate far away from the first vertical plate, the side wall of the limiting groove close to the first vertical plate is flush with the surface of the second vertical plate far away from the first vertical plate, and the stop plate is abutted against the surface of the second vertical plate far away from the first vertical plate; the connecting piece passes through the second connecting hole and the first connecting hole and then fixedly connects the stop plate with the second vertical plate.

Furthermore, the concave bottom frame body comprises a loading frame and two lifting frames which are respectively arranged on two sides of the loading frame, and the lifting frames are connected with the loading frame in a sliding manner; the two lifting frames are respectively provided with a supporting device and a guiding device; the piggyback transport vehicle also comprises a driving mechanism, the driving mechanism is arranged on the lifting frame, and the output end of the driving mechanism is fixedly connected with the loading frame; or the driving mechanism is arranged on the loading frame, and the output end of the driving mechanism is fixedly connected with the lifting frame so as to drive the loading frame to lift relative to the lifting frame through the driving mechanism.

By applying the technical scheme of the invention, when the movable sliding table is positioned at the unfolding position, the movable sliding table is spliced with the end underframe to form a supporting guide structure, wherein the supporting guide structure is provided with a supporting surface and a guide groove; at least part of the peripheral surface of the supporting wheel of the concave underframe is abutted against the supporting surface to play a supporting role, and at least part of the guide piece of the concave underframe extends into the guide groove to play a guiding role. In the process of controlling the concave underframe to move out by taking a bogie center plate as a rotating center, the concave underframe body is supported on the supporting surface of the end underframe or the movable sliding table through the supporting device and moves along the guide groove through the guide device, so that the concave underframe is prevented from deviating from the rotating track in the moving-out process, and the concave underframe is ensured to be moved out reliably and stably along the end underframe and the movable sliding table.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

figure 1 shows a schematic structural view of a piggyback transport car according to an alternative embodiment of the present invention;

figure 2 shows a schematic view of the support guide structure, support device and assembly structure of the guide device of the piggyback transport car of figure 1;

FIG. 3 shows a schematic structural view of the guide of FIG. 2;

FIG. 4 is a front view schematically illustrating the construction of the guide shaft of the guide device of FIG. 3;

FIG. 5 shows a schematic top view of the guide shaft of FIG. 4;

FIG. 6 shows a schematic structural view of the support device of FIG. 2;

fig. 7 shows a schematic diagram of a right-side view of the support device in fig. 6.

Wherein the figures include the following reference numerals:

1. an end chassis; 2. moving the sliding table; 201. a notch; 100. supporting the guide structure; 101. a support plate; 102. a first guide plate; 103. a second guide plate; 110. a support surface; 120. a guide groove; 3. a concave bottom frame; 10. a concave chassis body; 11. a loading frame; 12. a lifting frame; 20. a support device; 21. a support wheel; 22. a support frame; 221. an upper cover plate; 222. a first vertical plate; 223. a second vertical plate; 224. fixing the blind hole; 225. a fixing through hole; 226. a first connection hole; 23. a support shaft; 231. a limiting groove; 24. a stopper plate; 241. a second connection hole; 25. a connecting member; 30. a guide device; 31. a guide member; 310. an assembly hole; 311. a first bore section; 312. a second bore section; 32. a guide frame; 321. a connecting plate; 322. mounting holes; 323. reinforcing rib plates; 33. a guide shaft; 331. a first shaft section; 332. a second shaft section; 301. a first assembly face; 302. a second assembly face; 303. a third assembly surface; 304. a fourth assembly face; 333. a third shaft section; 334. a first stop surface; 335. a fourth shaft section; 34. a fastener.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a piggyback transport vehicle, which aims to solve the problem that how a concave underframe of the piggyback transport vehicle in the prior art can be reliably and stably moved out along an end underframe and a movable sliding table.

As shown in fig. 1, the piggyback transport vehicle comprises an end underframe 1, a movable sliding table 2 and a concave underframe 3, wherein the movable sliding table 2 is pivotally connected with the end underframe 1; along the rotation direction, the movable sliding table 2 has an unfolding position and a retracting position, and when the movable sliding table 2 is positioned at the unfolding position, the movable sliding table 2 is spliced with the end underframe 1 to form a support guide structure 100; the supporting and guiding structure 100 is provided with a supporting surface 110 and a guiding groove 120, the concave chassis 3 comprises a concave chassis body 10, a supporting device 20 and a guiding device 30, the supporting device 20 is arranged on the concave chassis body 10, the supporting device 20 comprises a supporting wheel 21, and at least part of the outer peripheral surface of the supporting wheel 21 is abutted with the supporting surface 110; the guide means 30 is provided on the recessed chassis body 10 below the supporting means 20, and the guide means 30 includes a guide member 31, at least a portion of the guide member 31 extending into the guide groove 120.

In the embodiment of the present application, when the mobile sliding table 2 is located at the unfolding position, the mobile sliding table 2 is spliced with the end chassis 1 to form the support guide structure 100, wherein the support guide structure 100 has a support surface 110 and a guide groove 120; at least a part of the outer peripheral surface of the support wheel 21 of the concave chassis 3 abuts against the support surface 110 to support the same, and at least a part of the guide 31 of the concave chassis 3 extends into the guide groove 120 to guide the same. In the process of controlling the concave underframe 3 to move out by taking a bogie center disk as a rotation center, the concave underframe body 10 is supported on the supporting surface 110 of the end underframe 1 or the movable sliding table 2 through the supporting device 20 and moves along the guide groove 120 through the guide device 30, so that the concave underframe 3 is prevented from deviating from the rotation track in the moving-out process, and the concave underframe 3 is ensured to be reliably and stably moved out along the end underframe and the movable sliding table.

As shown in fig. 1 and 2, the support guide structure 100 includes a support plate 101 extending in a horizontal direction, and a first guide plate 102 and a second guide plate 103 disposed on a lower surface of the support plate 101 at an interval, an upper end surface of the support plate 101 forms a support surface 110, and the first guide plate 102, the second guide plate 103 and the support plate 101 enclose a guide groove 120. The first guide plate 102 and the second guide plate 103 are arranged in an arc shape, so that an arc-shaped guide groove 120 extending in the horizontal direction is formed, the arc rotation track of the concave underframe 3 is ensured, and the concave underframe 3 can be reliably and stably moved out along the end underframe and the moving sliding table by taking a bogie center plate as a rotation center.

If the guide member contacts the wall surface of the guide groove 120, a jam is likely to occur due to a large frictional force therebetween, so that the recessed chassis 3 cannot be smoothly removed. Thus, in the alternative embodiment shown in fig. 2, the guide 31 is clearance-fitted to the groove wall surface of the guide groove 120. Thus, the guide 31 is prevented from being caught by the wall surface of the guide groove 120.

As shown in fig. 2 and 3, the guide 31 is a guide wheel; the guide device 30 further comprises a guide frame 32 and a guide shaft 33, the guide frame 32 is fixedly connected with the concave bottom frame body 10, the guide shaft 33 is installed on the guide frame 32, the axis of the guide shaft 33 extends in the vertical direction, and the guide wheel is pivotally sleeved on the guide shaft 33. The guide piece is set as a guide wheel, if the guide wheel is contacted with the groove wall surface of the guide groove 120 in the moving-out process of the concave bottom frame 3, rolling friction is formed between the guide wheel and the groove wall surface of the guide groove 120, the friction force is small, and the clamping stagnation condition can be effectively avoided.

As shown in fig. 2 and 3, the guide frame 32 includes a connecting plate 321 extending along the horizontal direction, and the connecting plate 321 is provided with a mounting hole 322 extending along the vertical direction; as shown in fig. 3 to 5, the guide shaft 33 includes a first shaft section 331, a second shaft section 332 and a third shaft section 333 which are connected in sequence, the area of the radial cross section of the first shaft section 331, the area of the radial cross section of the second shaft section 332 and the area of the radial cross section of the third shaft section 333 are reduced in sequence, and a first stop surface 334 is formed between the first shaft section 331 and the second shaft section 332; the second shaft section 332 penetrates through the mounting hole 322, and the first stop surface 334 is in stop fit with the upper end surface of the connecting plate 321; the guide wheel is pivotally sleeved on the first shaft section 331; the second shaft segment 332 has a non-circular radial cross-section; a thread structure is arranged on the outer peripheral surface of the third shaft section 333; the guide 30 further includes a fastener 34, the fastener 34 threadably engaging the third shaft segment 333 to mount the guide shaft 33 to the guide frame 32. Like this, guiding axle 33 detachably installs on leading truck 32, and leading wheel detachably installs on guiding axle 33, and the convenience is changed each spare part, perhaps changes the leading wheel of unidimensional not to the motorcycle type of unidimensional not to adapt to the guide way of different motorcycle types, promote guider's practicality.

Optionally, a bearing is provided between the guide wheel and the second shaft section 332.

As shown in fig. 5, the radial cross section of the second shaft segment 332 is square, the center line of the second shaft segment 332 is parallel to the axis of the first shaft segment 331, so that the position of the axis of the first shaft segment 331 is changed by rotating the second shaft segment 332, and thus the position of the guide wheel in the guide groove 120 can be adjusted by rotating the second shaft segment 332, and further the gap between the guide wheel and the wall surface of the guide groove 120 is adjusted, and the concave chassis 3 is prevented from being stuck during moving out.

As shown in fig. 5, the circumferential surface of the second shaft segment 332, whose radial section is arranged in a square shape, includes a first fitting surface 301, a second fitting surface 302, a third fitting surface 303, and a fourth fitting surface 304; the distance between the axis of the first shaft segment 331 and the first mounting surface 301 is d1, the distance between the axis of the first shaft segment 331 and the second mounting surface 302 is d2, the distance between the axis of the first shaft segment 331 and the third mounting surface 303 is d3, and the distance between the axis of the first shaft segment 331 and the fourth mounting surface 304 is d 4; wherein d1 < d2 < d3 < d 4. Thus, the guide wheel has four adjustable positions, the difference between the two mounting surfaces representing the value of the adjustment.

Alternatively, d2-d 1-d 3-d 2-d 4-d 3.

Optionally, the difference between the two mounting surfaces has a value in the range of 1mm to 5 mm.

In an embodiment of the present application, the structure of the guide shaft 33 is optimized, and includes three sections of concentric shafts and one section of eccentric polyhedral shaft, the distance between the assembling surface of the eccentric polyhedral shaft and the axis of the concentric shaft is different by 1mm, and the gap between the groove wall surfaces of the guide wheel having the guide groove 120 is adjusted by adjusting the matching position of the assembling surface of the guide shaft 33 and the mounting hole 322.

Specifically, the size and shape of the mounting hole 322 are matched with those of the second shaft section 332, the position between the center line of the mounting hole 322 and the wall surface of the guide groove 120 is relatively fixed, and the position of the second shaft section 332 in the mounting hole 322 is adjusted by rotating the second shaft section 332, so that the position of the axis of the first shaft section 331 is adjusted, and the position of the guide wheel in the guide groove 120 is adjusted.

As shown in fig. 3 to 5, the guide shaft 33 further includes a fourth shaft segment 335, the fourth shaft segment 335 is connected to the first shaft segment 331 and is located on a side of the first shaft segment 331 facing away from the second shaft segment 332, and a diameter of the fourth shaft segment 335 is larger than a diameter of the first shaft segment 331; the guide wheel is provided with an assembly hole 310, the assembly hole 310 comprises a first hole section 311 and a second hole section 312 which are communicated, and the diameter of the first hole section 311 is larger than that of the second hole section 312; fourth shaft segment 335 is located at first bore segment 311 and first shaft segment 331 is located at second bore segment 312. Therefore, a first limiting surface is formed at the communication position of the first hole section 311 and the second hole section 312, a second limiting surface is formed at the connection position of the first shaft section 331 and the fourth shaft section 335, the first limiting surface is matched with the second limiting surface, and the lower end surface of the guide wheel is matched with the upper end surface of the connecting plate 321, so that the guide wheel is prevented from being separated from the guide shaft 33.

As shown in fig. 2 and 3, the guiding frame 32 further includes a reinforcing rib plate 323, and the reinforcing rib plate 323 is connected to both the concave bottom frame body 10 and the connecting plate 321. In this way, the coupling strength between the guide device 30 and the recessed chassis body 10 can be improved.

As shown in fig. 2 and 6, the supporting device 20 further includes a supporting frame 22 and a supporting shaft 23, the supporting frame is fixedly connected to the recessed chassis body 10, the supporting shaft 23 is installed on the supporting frame 22, an axis of the supporting shaft 23 extends along a horizontal direction, and the supporting wheel 21 is pivotally sleeved on the supporting shaft 23.

As shown in fig. 2, 6 and 7, the supporting frame 22 includes an upper cover 221, and a first vertical plate 222 and a second vertical plate 223 that are disposed on a lower surface of the upper cover 221 at intervals; a fixing blind hole 224 is formed in the surface of the first vertical plate 222 facing the second vertical plate 223, and a fixing through hole 225 opposite to the fixing blind hole 224 is formed in the second vertical plate 223; the upper cover plate 221 and/or the first vertical plate 222 are fixedly connected with the concave underframe body 10; the supporting shaft 23 penetrates through the fixing through hole 225 and the supporting wheel 21 and then extends into the fixing blind hole 224; the supporting device 20 further comprises a stop plate 24 and a connecting piece 25, and a limit groove 231 extending along the radial direction of the supporting shaft 23 is formed in the outer peripheral surface of the supporting shaft; at least part of the stopper plate 24 extends into the limiting groove 231, the second vertical plate 223 is further provided with a first connecting hole 226 arranged at an interval with the fixing through hole 225, and the stopper plate 24 is provided with a second connecting hole 241 arranged opposite to the first connecting hole 226; the limiting groove 231 is located on one side of the second vertical plate 223 far away from the first vertical plate 222, the side wall of the limiting groove 231 close to the first vertical plate 222 is flush with the surface of the second vertical plate 223 far away from the first vertical plate 222, and the stop plate 24 is abutted with the surface of the second vertical plate 223 far away from the first vertical plate 222; the connecting member 25 passes through the second connecting hole 241 and the first connecting hole 226 to fixedly connect the stopper plate 24 with the second standing plate 223.

As shown in fig. 1, the concave bottom frame body 10 comprises a loading frame 11 and two lifting frames 12 respectively arranged at two sides of the loading frame 11, wherein the lifting frames 12 are connected with the loading frame 11 in a sliding way; the two lifting frames 12 are respectively provided with a supporting device 20 and a guiding device 30; the piggyback transport vehicle also comprises a driving mechanism, the driving mechanism is arranged on the lifting frame 12, and the output end of the driving mechanism is fixedly connected with the loading frame 11; or the driving mechanism is arranged on the loading frame 11, and the output end of the driving mechanism is fixedly connected with the lifting frame 12 so as to drive the loading frame 11 to lift relative to the lifting frame 12 through the driving mechanism. In this way, the support means 20 support the crane 12 during the lifting of the loading frame 11 relative to the crane 12.

When the moving slide 2 is in the retracted position, the moving slide 2 is located below the end chassis 1. Optionally, as shown in fig. 1, a notch 201 is formed in the movable sliding table 2, the notch 201 is used for avoiding the guiding device 30, when the concave chassis 3 is moved out of place, that is, the concave chassis 3 moves from the end chassis 1 to the movable sliding table 2, the movable sliding table 2 is driven to move from the unfolded position to the retracted position, and then the loading frame 11 is driven to descend until the loading frame abuts against the ground through the driving mechanism, so that the concave chassis 3 on the road truck or the semi-trailer is facilitated.

When the piggyback transport cart provided by the application is used, in an initial state, the movable sliding table 2 is located at a withdrawing position, the concave underframe 3 is located on the end underframe 1, the movable sliding table 2 is controlled to rotate and move from the withdrawing position to an unfolding position, then the concave underframe 3 is controlled to move out by taking a bogie center plate as a rotation center, part of the concave underframe 3 moves to the movable sliding table 2, part of the concave underframe 3 is still located on the end underframe 1, the movable sliding table 2 is controlled to rotate to the withdrawing position after the concave underframe 3 completely moves to the movable sliding table 2, the influence on the concave underframe 3 on a road truck or a semitrailer is avoided, then the concave underframe 3 is controlled to descend until the concave underframe 3 abuts against the ground, and the road truck or the semitrailer can conveniently and quickly sink; after the concave underframe 3 on the road truck or the semitrailer is finished, the concave underframe 3 is controlled to ascend, the movable sliding table 2 is controlled to move to the unfolding position, the concave underframe 3 moves back to the initial position along the supporting and guiding structure 100 by taking the bogie center plate as a rotating center, and finally the movable sliding table 2 is controlled to move to the folding position.

Alternatively, the mast 22 is welded to the crane 12 and the guide 32 is welded to the crane 12.

The supporting device 20 of the piggyback transport vehicle can support the rotation and lifting of the concave underframe body 10, and the supporting device 20 and the guiding device 30 of the piggyback transport vehicle can guide the rotation of the concave underframe body 10, so that the concave underframe 3 can rotate along a circular track.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously positioned and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A piggyback transport vehicle, comprising:

the end part chassis (1) and the movable sliding table (2), wherein the movable sliding table (2) is pivotally connected with the end part chassis (1); the moving sliding table (2) is provided with an unfolding position and a retracting position along the rotation direction, and when the moving sliding table (2) is located at the unfolding position, the moving sliding table (2) is spliced with the end underframe (1) to form a supporting and guiding structure (100); the support and guide structure (100) has a support surface (110) and a guide groove (120);

the support device comprises a concave underframe (3), wherein the concave underframe (3) comprises a concave underframe body (10), a support device (20) and a guide device (30), the support device (20) is arranged on the concave underframe body (10), the support device (20) comprises a support wheel (21), and at least part of the outer peripheral surface of the support wheel (21) is abutted to the support surface (110); the guiding device (30) is arranged on the concave underframe body (10) and is positioned below the supporting device (20), the guiding device (30) comprises a guiding piece (31), and at least part of the guiding piece (31) extends into the guiding groove (120).

2. The piggyback transport vehicle of claim 1, wherein the support guide structure (100) comprises a support plate (101) extending in a horizontal direction, a first guide plate (102) and a second guide plate (103) disposed at intervals on a lower surface of the support plate (101), wherein the first guide plate (102) and the second guide plate (103) are disposed in an arc shape; the upper end face of the supporting plate (101) forms the supporting surface (110), and the first guide plate (102), the second guide plate (103) and the supporting plate (101) enclose the guide groove (120).

3. The piggyback transport vehicle of claim 1, wherein said guide (31) is a clearance fit with a slot wall surface of said guide slot (120).

4. The piggyback transport vehicle of any one of claims 1 to 3, wherein the guide (31) is a guide wheel; the guiding device (30) further comprises:

the guide frame (32), the said guide frame (32) is fixedly connected with said concave underframe noumenon (10);

the guide shaft (33), install guide shaft (33) on leading truck (32), the axis of guide shaft (33) extends along vertical direction, but the leading wheel pivot ground is established on guide shaft (33).

5. The piggyback transport vehicle of claim 4,

the guide frame (32) comprises a connecting plate (321) extending along the horizontal direction, and a mounting hole (322) extending along the vertical direction is formed in the connecting plate (321);

the guide shaft (33) comprises a first shaft section (331), a second shaft section (332) and a third shaft section (333) which are connected in sequence, the area of the radial section of the first shaft section (331), the area of the radial section of the second shaft section (332) and the area of the radial section of the third shaft section (333) are reduced in sequence, and a first stop surface (334) is formed between the first shaft section (331) and the second shaft section (332); the second shaft section (332) penetrates through the mounting hole (322), and the first stop surface (334) is in stop fit with the upper end surface of the connecting plate (321); the guide wheel is pivotally sleeved on the first shaft section (331); the second shaft section (332) has a non-circular radial cross-section; a thread structure is arranged on the outer peripheral surface of the third shaft section (333);

the guide (30) further includes a fastener (34), the fastener (34) threadably engaging the third shaft segment (333) to mount the guide shaft (33) on the guide frame (32).

6. The piggyback transport vehicle of claim 5, wherein the radial cross section of the second shaft segment (332) is square in shape, the centerline of the second shaft segment (332) being parallel to the axis of the first shaft segment (331) to change the position of the axis of the first shaft segment (331) by rotating the second shaft segment (332).

7. The piggyback transport vehicle of claim 6, wherein the circumferential surface of the second shaft segment (332) having a square-shaped radial cross-section comprises a first mounting face (301), a second mounting face (302), a third mounting face (303), and a fourth mounting face (304); the distance between the axis of the first shaft segment (331) and the first mounting surface (301) is d1, the distance between the axis of the first shaft segment (331) and the second mounting surface (302) is d2, the distance between the axis of the first shaft segment (331) and the third mounting surface (303) is d3, and the distance between the axis of the first shaft segment (331) and the fourth mounting surface (304) is d 4; wherein d1 < d2 < d3 < d 4.

8. The piggyback transport vehicle of claim 5,

the guide shaft (33) further comprises a fourth shaft section (335), the fourth shaft section (335) being connected to the first shaft section (331) and being located on a side of the first shaft section (331) facing away from the second shaft section (332), the fourth shaft section (335) having a diameter larger than the diameter of the first shaft section (331);

the guide wheel is provided with an assembly hole (310), the assembly hole (310) comprises a first hole section (311) and a second hole section (312) which are communicated, and the diameter of the first hole section (311) is larger than that of the second hole section (312);

the fourth shaft segment (335) is located at the first bore segment (311), and the first shaft segment (331) is located at the second bore segment (312).

9. The piggyback transport vehicle according to claim 5, characterized in that the guide frame (32) further comprises a reinforcing rib plate (323), the reinforcing rib plate (323) being connected to both the depressed center body (10) and the connecting plate (321).

10. The piggyback transport vehicle of claim 1, wherein said support device (20) further comprises:

the supporting frame (22) is fixedly connected with the concave underframe body (10);

support shaft (23), support shaft (23) are installed on support frame (22), the axis of support shaft (23) extends along the horizontal direction, but supporting wheel (21) pivot ground is established on support shaft (23).

11. The piggyback transport vehicle of claim 10,

the supporting frame (22) comprises an upper cover plate (221), and a first vertical plate (222) and a second vertical plate (223) which are arranged on the lower surface of the upper cover plate (221) at intervals; a fixing blind hole (224) is formed in the surface, facing the second vertical plate (223), of the first vertical plate (222), and a fixing through hole (225) opposite to the fixing blind hole (224) is formed in the second vertical plate (223); the upper cover plate (221) and/or the first vertical plate (222) are fixedly connected with the concave underframe body (10); the supporting shaft (23) penetrates through the fixing through hole (225) and the supporting wheel (21) and then extends into the fixing blind hole (224);

the supporting device (20) further comprises a stop plate (24) and a connecting piece (25), and a limit groove (231) extending along the radial direction of the supporting shaft (23) is formed in the outer peripheral surface of the supporting shaft; at least part of the stop plate (24) extends into the limit groove (231), the second vertical plate (223) is further provided with a first connecting hole (226) which is arranged at an interval with the fixing through hole (225), and the stop plate (24) is provided with a second connecting hole (241) which is arranged opposite to the first connecting hole (226); the limiting groove (231) is located on one side, far away from the first vertical plate (222), of the second vertical plate (223), the side wall, close to the first vertical plate (222), of the limiting groove (231) is flush with the surface, far away from the first vertical plate (222), of the second vertical plate (223), and the stop plate (24) is abutted to the surface, far away from the first vertical plate (222), of the second vertical plate (223); the connecting piece (25) passes through the second connecting hole (241) and the first connecting hole (226) and then fixedly connects the stop plate (24) with the second vertical plate (223).

12. The piggyback transport vehicle of claim 1,

the concave underframe body (10) comprises a loading frame (11) and two lifting frames (12) respectively arranged at two sides of the loading frame (11), and the lifting frames (12) are in sliding connection with the loading frame (11); the two lifting frames (12) are respectively provided with the supporting device (20) and the guiding device (30);

the piggyback transport vehicle also comprises a driving mechanism, the driving mechanism is arranged on the lifting frame (12), and the output end of the driving mechanism is fixedly connected with the loading frame (11); or the driving mechanism is arranged on the loading frame (11), and the output end of the driving mechanism is fixedly connected with the lifting frame (12) so as to drive the loading frame (11) to lift relative to the lifting frame (12) through the driving mechanism.