A fork rail structure and a conveying device having the same

Abstract

The present application relates to material conveying technical field, specifically relates to a fork rail structure and conveying device with same, wherein the fork rail structure includes rolling support frame, top support, air bag and driving part, the rolling support frame at the bottom plays a rolling support role and is a multi-section structure, adjacent two rolling support frames are hinged together, can drive the top support matched with same, so that each section of the whole fork rail structure has a certain swing space in the transverse direction. In the case that the front end of the fork rail structure is blocked, the blocked section of the rolling support frame will swing under the action of the force of the rear section, so that the blockage can be removed, the normal operation of the fork rail structure is ensured, and the failure rate is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of material conveying, in particular to a fork rail structure and a conveying device with the same. BACKGROUND

[0002] At present, the logistics between the factory and the logistics warehouse has the problem of low efficiency. Now the warehouse uses forklifts, hydraulic trucks and electric tractors to complete the loading and unloading of materials in the truck compartment, which cannot improve the efficiency and requires more tool vehicles and consumes more labor hours. Therefore, an automatic loading and unloading method is needed to improve the short barge efficiency. In order to improve the short barge efficiency, the existing technology reforms the truck compartment and sets a chain conveying system in the truck compartment which is matched with the stack opening. However, the above reform will significantly increase the cost of the transport vehicle.

[0003] In order to solve the above problems, a fork rail structure which can extend into the truck compartment can be provided in the conveying device to realize automatic loading and unloading of materials. The fork rail structure can be driven to extend out or retract by a power device. However, during the extension and retraction process, the fork rail structure is easy to be blocked and stuck or hard to top, which will cause damage to the fork rail structure. In addition, the existing fork rail also has the defect of unstable operation, which affects the stability of the conveying system. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the above defects in the prior art, and to provide a fork rail structure and a conveying device with the same.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows:

[0006] The present application provides a fork rail structure, which comprises:

[0007] A rolling support frame having a plurality of segments, the rolling support frame having a support surface at the top and a rolling body at the bottom; adjacent two segments of the rolling support frame are hinged together, and the hinge shaft of the hinge is perpendicular to the support surface;

[0008] A top support frame having a plurality of segments, the top support frame being arranged one by one corresponding to the rolling support frame, the top support frame being movably arranged above the rolling support frame; a longitudinal extension accommodation space is provided between the top support frame and the rolling support frame;

[0009] An air bag is arranged in the accommodation space and extends longitudinally on the support surface;

[0010] A driving member is drivingly connected with the rolling support frame to drive the rolling support frame, the air bag and the top support frame to extend or retract in the horizontal direction.

[0011] Optionally, in the above fork rail structure, each of the first gaps between the adjacent two rolling support frames and each of the second gaps between the adjacent two top frames.

[0012] Optionally, in the above fork rail structure, a hinged partition plate is arranged between the adjacent two rolling support frames, the hinged partition plate has the hinge shaft in the middle and has the longitudinal partition plate on both sides of the hinge shaft.

[0013] Optionally, in the above fork rail structure, the two partition plates are arranged in the first gap and the second gap in a clearance fit manner.

[0014] Optionally, in the above fork rail structure, the rolling support frame is downwardly open, the rolling body is arranged on the side walls on both sides of the opening, the outer side of the side walls on both sides of the opening has a plurality of transversely extending limiting structures, the support surface is located at the highest position of the rolling support frame, and the support surface is a substantially flat plane.

[0015] Optionally, in the above fork rail structure, the rolling support frame is a carbon steel frame, and the limiting structure is welded on the carbon steel frame.

[0016] Optionally, in the above fork rail structure, the side walls on both sides of the top frame have inwardly bent end faces, the end faces are adapted to abut against the limiting structures to define the upper limit position of the movement of the top frame.

[0017] Optionally, in the above fork rail structure, a placing frame is further arranged, and the rolling support frame is movably arranged in the placing frame.

[0018] Optionally, in the above fork rail structure, the driving member includes a linear driving structure, the linear driving structure is arranged below the placing frame, the bottom surface of the placing frame has a longitudinally extending slot, and at least one connecting member is further arranged, one end of the connecting member is connected with the linear driving structure, and the other end of the connecting member penetrates through the slot and is connected with the rear end of the rolling support frame.

[0019] Optionally, in the above fork rail structure, the linear driving structure is a conveying chain, one end of the connecting member is fixedly connected with the conveying chain, and the other end of the connecting member is fixedly connected with the rolling support frame.

[0020] Optionally, in the above fork rail structure, the placing frame has two side walls extending upward on both sides, the end openings of the two side walls gradually increase, the bottom surface of the placing frame has an outwardly extending end and a downwardly inclined inclined surface structure.

[0021] The application also provides a conveying device, which comprises at least one conveying line, and the conveying line is provided with a sliding chain line having a circulating conveying chain, a non-powered roller supporting line arranged in parallel with the sliding chain line, and the above-mentioned fork rail structure arranged in parallel with the sliding chain line and the non-powered roller supporting line.

[0022] Optionally, in the above-mentioned conveying device, each of the conveying lines is provided with two non-powered roller supporting lines, two fork rail structures and one sliding chain line; the non-powered roller supporting lines are arranged on the outer side, the fork rail structures are arranged on the inner side of the non-powered roller supporting lines, and the sliding chain line is arranged in the middle of the conveying line.

[0023] Optionally, in the above-mentioned conveying device, the sliding chain line is a gas floating lifting sliding chain line comprising a circulating conveying chain unit and a sliding chain lifting air bag arranged between the circulating conveying chain units; and the non-powered roller supporting line is a gas floating non-powered roller line comprising a roller frame, a plurality of rollers and a roller lifting air bag arranged at the bottom of the roller frame.

[0024] The application also provides a conveying device, which is assembled in the carriage of a transport vehicle and is provided with the above-mentioned rail groove corresponding to the fork rail structure.

[0025] The technical scheme of the application has the following advantages:

[0026] 1. In the fork rail structure provided by the application, the rolling support frame at the bottom plays a rolling support role and is a multi-section structure, and adjacent two rolling support frames are hinged together to drive the top support frame matched therewith, so that each section of the fork rail structure has a certain swinging space in the transverse direction. In the case that the front end of the fork rail structure is blocked, the blocked section of the rolling support frame will swing under the action of the force of the rear section, so that the blockage can be removed, the normal operation of the fork rail structure is ensured, and the failure rate is reduced.

[0027] 2. In the fork rail structure provided by the application, gaps are arranged between adjacent two rolling support frames and between adjacent two top support frames, so that the swinging space of the fork rail structure is increased to facilitate the removal of the blockage.

[0028] 3. In the fork rail structure provided by the application, a hinge partition plate is arranged between adjacent two rolling support frames, and the partition plates arranged on both sides of the hinge shaft of the hinge partition plate are inserted into the first gap and the second gap, i.e. the partition plates are inserted between adjacent rolling support frames and adjacent top support frames. This arrangement not only can avoid that the fork rail structure swings too much, but also can limit the top support frame to prevent the top support frame from moving in series with the rolling support frame and the air bag in the longitudinal direction.

[0029] 4. The fork rail structure provided by the present application has a rolling support frame opening downward, a support surface at the highest position of the rolling support frame, and a generally "L" shaped cross section of the rolling support frame, and the support surface is a generally flat plane that can be used to support an air bag, which simplifies the structure of the rolling support frame, facilitates the introduction of a carbon steel welded support, and thus improves the overall strength and durability; the limiting structure can limit the end surface of the top support to limit the upper limit position of the top support and improve the stability of the fork rail structure.

[0030] 5. The fork rail structure provided by the present application has a linear drive structure arranged below the placing frame, and a connecting piece that transmits power from below to the rolling support frame through the slot of the placing frame, which can improve the driving stability of the fork rail structure.

[0031] 6. The conveying device provided by the present application has a fork rail structure, a sliding chain line, and a non-powered roller support line on the conveying line, which can be used for incoming material carrying of goods to be loaded or outward conveying of unloaded goods, and the structure can cooperate with the fork rail structure to improve the conveying efficiency of the conveying device. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.

[0033] Figure 1 The figure is a cooperation schematic diagram of the two pairs of conveying devices provided in the embodiments of the present application.

[0034] Figure 2 The figure is a platform conveying device structure schematic diagram provided in the embodiments of the present application.

[0035] Figure 3 The figure is a fork rail structure schematic diagram provided in the embodiments of the present application.

[0036] Figure 4 The figure is a cooperation schematic diagram of the rolling support frame in the fork rail structure provided in the embodiments of the present application.

[0037] Figure 5 The figure is a rolling support frame connecting end structure diagram provided in the embodiments of the present application.

[0038] Figure 6 The figure is a rolling support frame connecting structure diagram provided in the embodiments of the present application.

[0039] Figure 7 Structure diagram of the hinged partition provided in the embodiment of the present application;

[0040] Figure 8 Structure diagram of the vehicle-mounted conveying device provided in another embodiment of the present application;

[0041] Figure 9 Sectional view of the fork rail structure provided in the embodiment of the present application (at the connecting piece);

[0042] Figure 10 Sectional view of the fork rail structure provided in the embodiment of the present application.

[0043] Explanation of reference signs:

[0044] 1 - platform conveying device, 2 - vehicle-mounted conveying device, 11 - fork rail structure, 111 - top support, 112 - rolling support frame, 1121 - limiting structure, 1122 - roller, 1123 - first connecting piece, 1124 - second connecting piece, 113 - placing frame, 114 - hinged partition, 1141 - hinged shaft, 1142 - partition plate, 115 - connecting piece, 116 - conveying chain, 117 - base, 12 - sliding chain line, 13 - non-powered roller support line, 21 - conveying table, 22 - rail groove. DETAILED DESCRIPTION

[0045] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0047] In addition, the technical features involved in different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0048] Embodiment 1

[0049] The embodiment provides a fork rail structure 11 which can be assembled on a conveying platform of a conveying device and extends into a carriage to convey materials on the conveying platform into the carriage. Figures 3-7 As shown in FIGS. 9 and 10, the fork rail structure provided by the embodiment comprises a plurality of rolling support frames 112, two adjacent rolling support frames 112 are hinged together, and a hinge shaft of the hinging is perpendicular to the support surface, so that the rolling support frame can swing in the transverse direction, the top of the rolling support frame 112 is provided with a support surface for supporting an air bag described below, and the bottom of the rolling support frame 112 is provided with a rolling body which can be a plurality of rollers 1122, and the plurality of rollers 1122 can realize rolling support of the rolling support frame and a top support described below. The fork rail structure 11 further comprises a top support 111, an air bag and a driving member, the top support 111 also has a plurality of sections which are arranged one by one with the rolling support frames 112, that is, the top of each rolling support frame 112 is provided with a corresponding top support 111, the top support 111 is movably arranged above the rolling support frame 112, and the top of the top support can be used for supporting goods; a longitudinal accommodation space is arranged between the top support 111 and the rolling support frame 112, the accommodation space is a cavity located above in Figure 9 and Figure 10 , and is used for accommodating an air bag (not shown), the air bag longitudinally extends on the support surface, in the inflated state, the air bag can lift the top support upward to lift the materials by the fork rail structure, and in the deflated state, the air bag can lower the top support to release the support of the materials by the fork rail structure; and the driving member is in driving connection with the rolling support frame 112 to drive the rolling support frame 112, the air bag and the top support 111 to extend or retract in the horizontal direction.

[0050] The rolling support frame at the bottom of the fork rail structure provided by the embodiment has a multi-section structure, two adjacent rolling support frames are hinged together, can drive the top support matched therewith, and make each section of the whole fork rail structure have a certain swinging space in the transverse direction. In the case that the front end of the fork rail structure is blocked, the section of the rolling support frame blocked can swing under the action of the force of the rear section, so that the blockage can be released, the normal operation of the fork rail structure is ensured, and the failure rate is reduced. That is, the multi-section fork rail can flexibly adapt to the straightness error of the conveying device and the guide rail in the vehicle, and the requirement for the manufacturing process is reduced.

[0051] The fork rail structure provided by the embodiment can have a first gap between two adjacent rolling support frames 112 and a second gap between two adjacent top supports 111, and the existence of the first gap and the second gap can increase the swinging space of the fork rail structure to facilitate the release of the blockage.

[0052] Alternatively, the fork rail structure can further comprise a hinge partition 114 between the adjacent two rolling support frames, the hinge partition 114 having a hinge shaft 1141 in the middle and two longitudinal partition plates 1142 on both sides of the hinge shaft 1141, which are respectively arranged in the first gap and the second gap in a clearance fit manner.

[0053] Alternatively, the fork rail structure can further comprise a hinge partition 114 between the adjacent two rolling support frames, the hinge partition 114 having a hinge shaft 1141 in the middle and two longitudinal partition plates 1142 on both sides of the hinge shaft 1141, which are respectively arranged in the first gap and the second gap in a clearance fit manner.

[0054] The fork rail structure provided by the embodiment can avoid the fork rail structure from swinging too much, and can limit the top support frame to prevent the top support frame from moving longitudinally relative to the rolling support frame and the air bag.

[0055] Alternatively, the partition plate 114 can be inserted into the first gap only, which can also avoid the fork rail structure from swinging too much. In this case, the rolling support frame 112 and the top support frame 111 have a limiting and clamping structure for preventing longitudinal movement. For example, the rolling support frame 112 has a longitudinal limiting protrusion on the outer side wall, and the top support frame 111 has a clamping groove or protrusion matching the longitudinal limiting protrusion on the inner side wall, so as to form the limiting and clamping structure for preventing the top support frame from moving longitudinally relative to the rolling support frame during the process of extending or retracting in the horizontal direction.

[0056] The fork rail structure can further comprise a hinge partition 114 between the adjacent two rolling support frames, the hinge partition 114 having a hinge shaft 1141 in the middle and two longitudinal partition plates 1142 on both sides of the hinge shaft 1141, which are respectively arranged in the first gap and the second gap in a clearance fit manner. Figure 5 Figure 6 The fork rail structure can further comprise a hinge partition 114 between the adjacent two rolling support frames, the hinge partition 114 having a hinge shaft 1141 in the middle and two longitudinal partition plates 1142 on both sides of the hinge shaft 1141, which are respectively arranged in the first gap and the second gap in a clearance fit manner.

[0057] ​In the aforementioned forklift structure, the rolling support frame 112 opens downwards, and the roller 1122 straddles the side walls on both sides of the opening. Several laterally extending limiting structures 1121 are located on the outer upper part of the side walls on both sides of the opening. The rolling support frame 112 is preferably a carbon steel support, and the limiting structures 1121 are welded to the carbon steel support. The support surface is located at the highest position of the rolling support frame 112. The support surface is a generally flat plane, making the overall cross-section of the rolling support frame roughly "U". This generally flat plane can be used to support the airbag. Compared to the existing complex aluminum profile support frame, this arrangement simplifies the structure of the rolling support frame, facilitates the introduction of a carbon steel welded support, and thus improves the overall strength and durability. The limiting structures 1121 can limit the upper limit position of the top support 111 by engaging with the end face of the top support, thereby improving the stability of the forklift structure. Alternatively, the sidewalls on both sides of the top support 111 have inwardly bent end faces adapted to abut against the limiting structure 1121 to limit the upper limit position of the movement of the top support 111.

[0058] The aforementioned fork rail structure also includes a placement frame 113, such as... Figure 9 and Figure 10 As shown, the placement frame 113 is a longitudinally extending groove-shaped frame. The rolling support frame 112 is movably disposed within the placement frame and can extend from or retract into the placement frame. Furthermore, the bottom surface of the placement frame has a longitudinally extending slot S, through which the following connecting member can pass to provide power to the aforementioned rolling support frame 112.

[0059] The driving member includes a linear driving structure arranged below the placing frame 113, which is preferably a conveying chain. The conveying chain is arranged below the placing frame in a circulating manner, and further includes a driving motor for powering the conveying chain. Specifically, a base 117 is arranged below the placing frame 113, which is in a frame structure. The conveying chain can be sleeved on the base 117. In this embodiment, at least one connecting member 115 is further included. One end of the connecting member 115 is fixedly connected to the conveying chain, and the other end of the connecting member 115 penetrates through the slot and is connected to the rear end of the rolling support frame. Specifically, the other end of the connecting member 115 is fixedly connected to the top of the rolling support frame 112. The connection of the other end of the connecting member to the rear end of the rolling support frame can increase the extension length of the rolling support frame and the top support frame. The linear driving structure of the fork rail structure provided in this embodiment is arranged below the placing frame. The connecting member penetrates through the slot of the placing frame to transmit power from below to the rolling support frame. The driving force of this driving mode is not affected by the driving distance and does not attenuate. The driving stability of the fork rail structure can be improved.

[0060] In the fork rail structure, Figure 3 as shown, the placing frame 113 has two side walls extending upward on both sides. The end openings of the two side walls gradually increase in size. The bottom end of the placing frame 113 extends outward and has a downwardly inclined slope structure. The enlarged and inclined end of the placing frame can avoid the rolling support frame and the top support frame being blocked when they extend outward, and facilitate the docking with the subsequent receiving material conveying structure.

[0061] Embodiment 2

[0062] As shown in Figure 2 , this embodiment provides a platform conveying device 1, which is suitable for being arranged on a conveying platform and is used for automatically loading and unloading materials. The conveying device provided in this embodiment includes two conveying lines. Each conveying line includes a sliding chain line 12, two fork rail structures as described in Embodiment 1, and two unpowered roller support lines 13. The sliding chain line 12 is arranged in the middle of the conveying line. The sliding chain line 12 has a circulating conveying chain for conveying materials to the conveying device or unloading the materials from the conveying device. On both sides of the conveying line, the unpowered roller support line 13 is arranged on both sides of the conveying line and is arranged in parallel with the sliding chain line 12. The unpowered roller support line 13 can be used for supporting materials (such as pallets) to reduce the resistance of the materials during transportation on the conveying device and improve the transportation efficiency. The fork rail structure is arranged on the inner side of the unpowered roller support line and is arranged in parallel with the sliding chain line and the unpowered roller support line.

[0063] The platform conveying device provided by the embodiment can be used for carrying the to-be-loaded goods or conveying the unloaded goods outward, and the structure can be matched with the fork rail structure to improve the conveying efficiency of the conveying device.

[0064] As an alternative embodiment, the conveying line of the platform conveying device provided by the embodiment can be one or more than two, which can be determined according to the width of the conveying platform or the width of the to-be-loaded carriage.

[0065] Optionally, in the platform conveying device, the sliding chain line 12 is a gas-floating lifting sliding chain line, which includes a circulating conveying chain unit and a sliding chain lifting air bag between the circulating conveying chain unit; the non-powered roller support line 13 is a gas-floating non-powered roller line, which includes a roller frame, a plurality of rollers and a roller lifting air bag at the bottom of the roller frame. The conveying device provided by the embodiment has the air bag lifting structure for the non-powered roller support line, the fork rail structure and the sliding chain line, and the lifting of each component can be matched to realize the adjustment of different transportation modes, thereby improving the working efficiency of the overall conveying device.

[0066] Embodiment 3

[0067] The embodiment provides a vehicle-mounted conveying device 2, which is suitable for being assembled in a carriage of a transport vehicle, such as Figure 1 and Figure 8 As shown in the drawings, the vehicle-mounted conveying device 2 can be connected with the platform conveying device 1, and the vehicle-mounted conveying device 2 includes a conveying table 21 and a rail groove 22, which can correspond to the fork rail structure of the platform conveying device in the embodiment 2, so that the fork rail structure can be inserted into the rail groove 22 to realize the loading or unloading of the goods. The vehicle-mounted conveying device provided by the embodiment has a small amount of modification for the carriage of the transport vehicle, improves the application range of the vehicle, and has a large carrying capacity after the modification of the vehicle, a small weight increase of the vehicle, a maximum load of 30 tons, no roller on the vehicle and no power, so that the goods will not move relatively during the transportation.

[0068] The transport vehicle with the vehicle-mounted conveying device 2 provided by the embodiment can enter the platform station with the platform device described in embodiment 2 under the assistance of the ground guide column, and can complete positioning under the positioning of the docking guide mechanism, thereby starting the subsequent loading or unloading process. When loading, the air lifting of the sliding chain line in the platform conveying device transports the material on the rear conveying line to the platform conveying device, when all the material is transferred to the platform conveying device, the sliding chain line deflates, and the goods are placed on the non-powered roller support line. When starting loading, the air inflation of the fork rail structure lifts the goods, the linear drive structure drives the rolling support frame and the top support frame to move into the fork rail operation groove in the vehicle, when the material is completely transported into the vehicle compartment, the fork rail structure deflates and descends, and the material is placed on the floor in the vehicle compartment. The fork rail structure returns from the vehicle to the platform, and the loading and unloading process is completed. The unloading process is opposite to the loading process, and the required time is consistent. After the vehicle completes unloading, the material is automatically put into the warehouse.

[0069] Obviously, the above embodiments are only examples for clearly illustrating the present application, and are not intended to limit the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. All the embodiments do not need to be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A fork rail structure, characterized by, The application relates to a fork rail structure. The fork rail structure comprises: a rolling support frame with several sections, the top of the rolling support frame having a support surface, the bottom of the rolling support frame having rolling bodies, and the rolling support frame having an opening downward; two adjacent sections of the rolling support frame are hinged together, the hinge shaft of the hinging being perpendicular to the support surface; and a first gap being formed between the two adjacent sections of the rolling support frame; a hinged partition plate is arranged between the two adjacent sections of the rolling support frame; the middle of the hinged partition plate has the hinge shaft, and the two sides of the hinge shaft are respectively provided with longitudinal partition plates; a top support frame with several sections is arranged corresponding to the rolling support frame, and the top support frame is movably arranged above the rolling support frame; a longitudinal accommodation space is formed between the top support frame and the rolling support frame; an air bag is arranged in the accommodation space and longitudinally extends on the support surface; a driving member is drivingly connected with the rolling support frame to drive the rolling support frame, the air bag and the top support frame to extend or retract in the horizontal direction; 2. The fork rail structure according to claim 1, characterized by the two adjacent sections of the rolling support frame are hinged together, and can drive the corresponding top support frame, so that each section of the whole fork rail structure has a certain swing space in the transverse direction.

3. The fork rail structure according to claim 2, characterized in that, a second gap is formed between the two adjacent sections of the top support frame.

4. The fork rail structure of claim 1, wherein The two side partition plates are arranged in the first gap and the second gap in a gap-fitting mode.

5. The fork rail structure according to claim 4, characterized in that, The rolling bodies are arranged on the side walls on the two sides of the opening; the outer side of the side walls on the two sides of the opening is provided with a plurality of transversely extending limiting structures; the support surface is located at the highest position of the rolling support frame, and the support surface is a substantially flat plane.

6. The forked rail structure according to claim 4, characterized by The rolling support frame is a carbon steel support frame, and the limiting structures are welded on the carbon steel support frame.

7. The fork rail structure according to any one of claims 1 to 6, characterized in that, The side walls on the two sides of the top support frame are provided with inwardly bent end faces which are adapted to abut against the limiting structures to limit the upper limit position of the movement of the top support frame.

8. The forked rail structure according to claim 7, characterized by The application further comprises a placing frame, and the rolling support frame is movably arranged in the placing frame. The driving member comprises a linear driving structure which is arranged below the placing frame. The bottom surface of the placing frame is provided with a longitudinally extending slot.

9. The forked rail structure according to claim 8, characterized in that The application further comprises at least one connecting member, one end of the connecting member being connected with the linear driving structure, and the other end of the connecting member penetrating through the slot and being connected with the rear end of the rolling support frame.

10. The forked rail structure according to claim 8, wherein The linear driving structure is a conveying chain, one end of the connecting member being fixed on the conveying chain, and the other end of the connecting member being fixed on the rolling support frame.

11. A delivery device characterized by, The placing frame is provided with two side walls which extend upward, and the end openings of the two side walls gradually increase; and the end of the bottom surface of the placing frame extends outward and is provided with a downwardly inclined inclined surface structure. The application comprises at least one conveying line which is provided with: a sliding chain line which is provided with a circulating conveying chain; a non-powered roller support line which is arranged in parallel with the sliding chain line; and the fork rail structure according to any one of claims 1-10 is arranged in parallel with the sliding chain line and the non-powered roller support line.

12. The delivery device of claim 11, wherein, Each of the conveying lines has two unpowered roller support lines, two fork rail structures and one sliding chain line; the unpowered roller support lines are arranged at the outer side, the fork rail structures are arranged at the inner side of the unpowered roller support lines, and the sliding chain line is arranged at the middle part of the conveying line.

13. The delivery device of claim 12, wherein, The sliding chain line is a gas-floating lifting sliding chain line, which comprises circulating conveying chain units and sliding chain lifting air bags between the circulating conveying chain units; the unpowered roller support line is a gas-floating unpowered roller line, which comprises roller frames, rollers and roller lifting air bags at the bottom of the roller frames.

14. A transport apparatus for fitting within the bed of a transport vehicle, characterised in that, The conveying device has track grooves corresponding to the fork rail structures of any one of claims 1-10.

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