Automatic opening and closing mechanism for top cover of express delivery vehicle

Abstract

The utility model relates to the field of express delivery vehicles, in particular to an express delivery vehicle top cover automatic opening and closing mechanism which comprises a vehicle frame assembly, a cage box frame assembly and a top cover assembly, and the top cover assembly is rotatably arranged at the top of the vehicle frame assembly. The cage box frame assembly is movably connected with the frame assembly and located on the lower side of the top cover assembly, the cage box frame assembly is arranged to be capable of transversely moving to a preset distance and rotating at a preset position, at the moment, the tail of the cage box frame assembly can be downward, the head of the cage box frame assembly can be lifted, and therefore the top cover assembly is squeezed to swing upwards; and when the cage box frame assembly rotates to a preset angle, the top cover assembly swings downwards until the tail part of the cage box frame assembly is in contact with the ground and the head part of the cage box frame assembly is propped against the top cover assembly. According to the utility model, the top cover does not need to stretch out and draw back, the cost is low, and the structure is simple by effectively utilizing the structural configuration of the top cover.

Description

TECHNICAL FIELD

[0001] The application relates to the field of express delivery vehicles, in particular to an automatic opening and closing mechanism of a top cover of an express delivery vehicle. BACKGROUND

[0002] With the rapid development of online shopping and logistics industry, the demand for express unmanned delivery is gradually increasing. The unmanned delivery vehicle is a product that appears for the current end delivery market and the development of unmanned driving. Its main purpose is to complete the cage box carrying, and the cage box is a container for placing express. The cage box is transferred or delivered by the unmanned delivery vehicle. The express vehicle is usually provided with a top cover for waterproofing. The existing cage box of the unmanned delivery vehicle is usually turned over onto the express vehicle and then moved to the front of the vehicle. Since the height of the cage box bracket during the turning process will exceed the height of the top cover, the top cover needs to be set as a structure that can be opened and closed or telescopic. Therefore, the existing express vehicle top cover turning structure is complex and has high cost. In view of this problem, there is a demand for an express delivery vehicle top cover automatic opening and closing mechanism which does not need to be telescopic, has low cost and simple structure. SUMMARY

[0003] The main purpose of the present application is to provide an automatic opening and closing mechanism of a top cover of an express delivery vehicle, which can effectively utilize its own structural configuration to realize the advantages of low cost and simple structure.

[0004] Another purpose of the present application is to provide an automatic opening and closing mechanism of a top cover of an express delivery vehicle, which comprises a vehicle frame assembly, a cage box frame assembly and a top cover assembly. The top cover assembly is rotatably arranged on the top of the vehicle frame assembly, and the cage box frame assembly is also movably connected with the vehicle frame assembly and located below the top cover assembly. The cage box frame assembly is arranged to be transversely movable to a predetermined distance and to be rotated at a predetermined position. At this time, the head of the cage box frame assembly is lowered and the tail is lifted, so that the top cover assembly is pressed and swings upward until the head of the cage box frame assembly contacts the ground and the tail abuts against the top cover assembly. That is, the structure of the top cover assembly is simplified by moving the cage box frame assembly and opening the top cover assembly, thereby realizing low cost of the product.

[0005] Another purpose of the present application is to provide an automatic opening and closing mechanism of a top cover of an express delivery vehicle, which is simple in structure and convenient to operate, does not involve complex manufacturing process and expensive materials, has high economic efficiency, and is easy to popularize and use.

[0006] In order to achieve the above-mentioned at least one application purpose, the application provides a top cover automatic opening and closing mechanism of express delivery vehicle, wherein the top cover automatic opening and closing mechanism of express delivery vehicle comprises a vehicle frame assembly, a cage frame assembly and a top cover assembly, the top cover assembly is rotatably arranged on the top of the vehicle frame assembly, and the cage frame assembly is movably connected with the vehicle frame assembly and located on the downside of the top cover assembly, the cage frame assembly is arranged to be transversely moved to a predetermined distance and rotated at a predetermined position, at this time, the head of the cage frame assembly is downward and the tail of the cage frame assembly is lifted, so that the top cover assembly is pressed to swing upward until the head of the cage frame assembly contacts the ground and the tail of the cage frame assembly abuts against the top cover assembly.

[0007] In one or more embodiments of the application, the vehicle frame assembly comprises two rear supports and two buffer seats, the vehicle frame assembly is fixed on the express delivery vehicle, the two rear supports are fixed on the tail of the express delivery vehicle and are spaced apart by a predetermined distance, and the two buffer seats are respectively fixed on the top ends of the two rear supports, and in addition, the buffer seat is an elastic element.

[0008] In one or more embodiments of the application, the vehicle frame assembly further comprises two front supports, two hinged seats, two turnover wheel sleeves and two translation guide rails, the two front supports are fixed on the front of the express delivery vehicle and are spaced apart by a predetermined distance, the two hinged seats are distributed and fixed on the top of the two front supports, the two turnover wheel sleeves are fixed on the side of the two rear supports close to each other and close to the bottom of the rear supports, the two translation guide rails are oppositely arranged and spaced apart by a predetermined distance, and the translation guide rails are fixed on the express delivery vehicle, one end of the translation guide rail is close to the front support, and the other end of the translation guide rail is close to the rear support.

[0009] In one or more embodiments of the application, the cage frame assembly comprises a frame body, a front baffle, two side guide wheels and a guide plate, the front baffle is fixed on one end of the frame body and is perpendicular to the frame body, the two side guide wheels are rotatably fixed on the top of the front baffle and are spaced apart by a predetermined distance, and in addition, the guide plate is fixed in front of the front baffle and has the same length as the front baffle.

[0010] In one or more embodiments of the application, the cage frame assembly further comprises a plurality of translation wheels and two turnover wheels, the plurality of translation wheels are respectively rotatably fixed on the front sides and the rear sides of the frame body, and the two turnover wheels are fixed on the two sides of the lower part of the rear end of the frame body, wherein when the cage frame assembly is transversely moved by a predetermined distance, the two turnover wheels are respectively arranged in the two turnover wheel sleeves and are hinged with the corresponding turnover wheel sleeves.

[0011] In one or more embodiments of the application, the top cover assembly comprises a cover plate and two connection assemblies, and the two connection assemblies are distributed and arranged on the two sides of the cover plate.

[0012] In one or more embodiments of the present application, each of the connection assemblies comprises a lateral guide rail and a top cover guide wheel, the lateral guide rail is fixed below the cover plate, the lateral guide rail comprises a guide rail top surface and a guide rail bottom surface, the top cover guide wheel is fixed on the cover plate and located on one side of the lateral guide rail, the distance between the guide rail top surface and the guide rail bottom surface is greater than the diameter of the side guide wheel, and the top cover guide wheel is arranged at the tail of the cover plate.

[0013] In one or more embodiments of the present application, each of the connection assemblies further comprises a transition plate and a hinge shaft sleeve, the transition plate is fixed at the tail of the lateral guide rail, the hinge shaft sleeve is fixed at the front of the lateral guide rail, and the two hinge shaft sleeves are respectively hinged with the two hinge seats, and the two side guide wheels are respectively matched with the two lateral guide rails. BRIEF DESCRIPTION OF DRAWINGS

[0014] These and / or other aspects and advantages of the present application will become more apparent and more readily appreciated from the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings in which:

[0015] Figure 1 FIG. 1 illustrates a general assembly diagram of an automatic opening and closing mechanism of a delivery vehicle roof cover.

[0016] Figure 2 FIG. 4 illustrates a structural schematic diagram of a vehicle frame assembly.

[0017] Figure 3 FIG. 6 illustrates a structural schematic diagram of a cage frame assembly.

[0018] Figure 4 FIG. 8 illustrates a structural schematic diagram of a top cover assembly.

[0019] Figure 5 FIG. 11 illustrates a schematic diagram of the abutment state of the side guide wheel and the lateral guide rail.

[0020] Figure 6 FIG. 13 illustrates a schematic diagram of the abutment state of the side guide wheel and the transition plate.

[0021] Figure 7 FIG. 15 illustrates a schematic diagram of the abutment state of the side guide wheel, the transition plate, the top cover guide wheel and the guide plate.

[0022] Figure 8 FIG. 17 illustrates a schematic diagram of the abutment state of the top cover guide wheel and the guide plate.

[0023] Figure 9 FIG. 20 illustrates a diagram of the cage frame assembly moved to the in-place state.

[0024] Figure 10 FIG. 22 illustrates a diagram of the cage frame assembly in the horizontal state.

[0025] Figure 11The side guide wheel abutting state diagram is shown.

[0026] Figure 12 The top cover guide wheel abutting state diagram is shown.

[0027] Figure 13 The cage rack assembly vertical state diagram is shown.

[0028] Figure 14 The transition plate principle schematic diagram is shown. DETAILED DESCRIPTION

[0029] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but are only used to enable a clear and consistent understanding of the application. Accordingly, it should be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purpose only and not for the purpose of limiting the application as defined by the appended claims and their equivalents.

[0030] It is understood that the term "one" is understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, while in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0031] Although ordinal numbers such as "first", "second", etc. will be used to describe various components, those components are not limited by the ordinal numbers. The terms are used only to distinguish one component from another. For example, a first component can be termed a second component, and similarly, a second component can also be termed a first component without departing from the teachings of the present inventive concept. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The terms used herein are only for the purpose of describing various embodiments and are not intended to be limiting. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "has", when used in this specification, specify the presence of stated features, numbers, steps, operations, components, elements, or a combination thereof, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.

[0033] Reference Figures 1 to 14 , according to the top cover automatic opening and closing mechanism of the express delivery vehicle of a preferred embodiment of the present application, it is necessary to explain that the structure of the top cover automatic opening and closing mechanism of the express delivery vehicle is as shown in Figure 1As shown, wherein is set on the express car as shown, and the express delivery car roof automatic opening and closing mechanism includes a frame assembly 10, a cage box frame assembly 20 and a roof assembly 30, the roof assembly 30 is rotatably provided on the top of the frame assembly 10, and the cage box frame assembly 20 is also movably connected with the frame assembly 10 and located on the lower side of the roof assembly 30. Specifically, the operation mode of the above cage box frame assembly 20 and the roof assembly 30 is that the cage box frame assembly 20 is arranged to move transversely to a predetermined distance, and at the same time, as shown in Figure 10 the predetermined position can be rotated, at this time the tail of the cage box frame assembly 20 will be downward, the head will be lifted, so that the roof assembly 30 is pressed to swing upward until the tail of the cage box frame assembly 20 contacts the ground, and the head is abutted on the roof assembly 30, that is, as shown in Figure 13 the state.

[0034] It should be noted that the frame assembly includes two rear supports 101, two buffer seats 102, two front supports 103, two hinge seats 104, two turnover wheel sleeves 105 and two translation guide rails 106. It is worth mentioning that the frame assembly is fixed on the above-mentioned express car, and two rear supports 101 are fixed at the tail of the express car 01 and are spaced apart by a predetermined distance, two buffer seats 102 are respectively fixed at the top end of two rear supports 101, and the buffer seat 102 is an elastic element. In addition, two front supports 103 are fixed at the front of the express car 01 and are spaced apart by a predetermined distance, and two hinge seats 104 are distributed and fixed at the top of two front supports 103, two turnover wheel sleeves 105 are fixed at the side of two rear supports 101 close to each other and close to the bottom of the rear support 101, two translation guide rails 106 are oppositely arranged and spaced apart by a predetermined distance, and the translation guide rail 106 is fixed on the express car, and one end of the translation guide rail 106 is close to the front support 103, and the other end is close to the rear support 101, that is, as shown in Figure 2 the position.

[0035] Specifically, the cage frame assembly comprises a frame body 201, a front baffle 202, two side guide wheels 203, a guide plate 204, a plurality of translation wheels 205 and two turnover wheels 206. The front baffle 202 is fixed at one end of the frame body 201 and is perpendicular to the frame body 201. The two side guide wheels 203 are rotatably fixed at the top of the front baffle 202 and are spaced apart by a predetermined distance. In addition, the guide plate 204 is fixed in front of the front baffle 202, i.e. on the side of the front baffle 202 facing away from the frame body 201, and has a length consistent with that of the front baffle 202. The plurality of translation wheels 205 are rotatably fixed at the front sides and the rear sides of the frame body 201. The two turnover wheels 206 are arranged at the lower sides of the rear end of the frame body 201. In addition, it is worth mentioning that the number of the guide plate 204 is at least one. If two guide plates 204 are provided, they need to be spaced apart by a predetermined distance to be located on both sides of the front baffle 202.

[0036] Specifically, the top cover assembly comprises a cover plate 301 and two connecting assemblies. The two connecting assemblies are arranged on both sides of the cover plate 301. Each connecting assembly comprises a lateral guide rail 302, a top cover guide wheel 303, a transition plate 304 and a hinge shaft sleeve 305. The lateral guide rail 302 is fixed below the cover plate 301. The lateral guide rail 302 comprises a guide rail top surface 3021 and a guide rail bottom surface 3022. The top cover guide wheel 303 is fixed on the cover plate 301 and located on one side of the lateral guide rail 302. The distance between the guide rail top surface 3021 and the guide rail bottom surface 3022 is greater than the diameter of the side guide wheel 203. The top cover guide wheel 303 is arranged at the tail of the cover plate 301. The transition plate 304 is fixed at the tail of the lateral guide rail 302. The hinge shaft sleeve 305 is fixed at the front of the lateral guide rail 302. In addition, the transition plate 304 also has an abutting surface 3041.

[0037] It is worth mentioning that after the turnover wheel 206 of the cage frame assembly 20 enters the turnover wheel sleeve 105, it is hinged with the turnover wheel sleeve 105, so that the cage frame assembly 20 can be turned around the tail plate of the delivery vehicle 01. In addition, the cage frame assembly 20 can slide in the translation guide rail 106 through the plurality of translation wheels 205, so that the cage frame assembly 20 can translate on the delivery vehicle. The top cover assembly 30 is hinged with the hinge seat 104 through the hinge shaft sleeve 305, so that the top cover assembly 30 can be turned around the front top of the vehicle frame assembly 10.

[0038] It is worth mentioning that the process of unloading the delivery vehicle 01 is as follows: the cage frame assembly 20 moves backward, moves to the position, rotates counterclockwise, and the cage frame assembly 20 is perpendicular.

[0039] The side guide wheel 203 is located in the lateral guide rail 302 when the cage frame assembly 20 is horizontal, the tail of the top cover assembly 30 is in abutment with the buffer seat 102, and the top cover assembly and the lateral guide rail 302 are horizontal (horizontal relative to the vehicle body of the express vehicle 01) as shown in Figure 9 . At this time, the top cover assembly 30 will not be opened and closed when the cage frame assembly 20 moves forward and backward.

[0040] In addition, when the cage frame assembly 20 moves to the last position, the cage frame assembly 20 is then rotated counterclockwise, at which time the side guide wheel 203 is in abutment with the guide rail top surface 3021 of the lateral guide rail 302, and the side guide wheel 203 drives the top cover assembly 30 to gradually open upward as shown in Figure 11 .

[0041] When the side guide wheel 203 approaches the tail of the lateral guide rail 302, the top cover guide wheel 303 is located outside the front baffle 202 as shown in Figure 5 , and the two will not interfere with each other.

[0042] In addition, when the side guide wheel 203 passes through the tail of the lateral guide rail 302 and is in abutment with the front of the transition plate 304, at this time the top cover guide wheel 303 is located above the front baffle 202, and as the cage frame assembly 20 continues to rotate counterclockwise, the top cover guide wheel 303 can smoothly enter the baffle 202.

[0043] As shown in Figure 7 , as the cage frame assembly 20 continues to rotate counterclockwise, the side guide wheel 203 is in abutment with a certain position in the middle of the transition plate 304, and at this time the top cover guide wheel 303 is in abutment with the guide plate 204.

[0044] As shown in Figure 8 , as the cage frame assembly 20 continues to rotate counterclockwise, the top cover guide wheel 303 remains in abutment with the guide plate 204, and the side guide wheel 203 gradually moves away from the transition plate 304. Thus, the smooth transition of the guide wheel abutment is completed.

[0045] As shown in Figure 12 , as the cage frame assembly 20 continues to rotate counterclockwise, due to the action of gravity, the top cover guide wheel 303 always remains in abutment with the guide plate 204 until the cage frame assembly 20 is in a vertical state as shown in Figure 13 , at which time the front end of the top cover assembly 20 is still located above the cage frame assembly 20, and the clockwise rotation of the cage is a prerequisite for the automatic opening and closing of the loading process. Conversely, the top cover assembly 30 can still rely on the power of the cage frame assembly 20 to follow the automatic opening and closing during the loading process of the express vehicle 01.

[0046] It should also be noted that the buffer seat 102 is an elastic element, and when it is in a free state, the height of its top is higher than the height of its tail when the top cover assembly 30 is horizontal.

[0047] When the cage frame assembly 20 rotates clockwise to a point close to horizontal, the cover plate 301 abuts against the top of the buffer seat 102. As the cage frame assembly 20 continues to rotate clockwise, since the spacing between the lateral guide rails 302 is greater than the diameter of the side guide wheels 203, the side guide wheels 203 abut against the top surface 3021 of the lateral guide rails 302 and then abut against the bottom surface 3022 of the guide rails.

[0048] As the cage frame assembly 20 continues to rotate clockwise, the side guide wheel 203 exerts a downward force on the top cover assembly 30 and compresses the buffer seat 102 until the cage frame assembly 20 is horizontal and the side guide rails 302 are also horizontal front and back. The side guide wheel 203 is always in contact with the guide rail bottom surface 3022 of the side guide rail 302, and the buffer seat 102 is in a compressed state, which can provide a pre-tightening force to ensure that the top cover assembly 30 is tightly fitted to the frame during the operation of the express vehicle 01.

[0049] like Figure 14 As shown, when the side guide wheels 203 and the transition plate 304, and the top cover guide wheels 303 and the guide plate 204, simultaneously abut, the extension line of the abutting surface 3041 of the transition plate 304 and the outer extension line of the guide plate 204 are designed to have an opening that gradually increases. When the cage frame assembly 20 rotates clockwise, the top cover guide wheels 303 move toward the inside of the guide plate 204, while the side guide wheels 203 move toward the outside of the transition plate 304. Because the two lines are narrower on the inside and wider on the outside, the abutment of the top cover guide wheels 303 and the guide plate 204 under the action of gravity will inevitably cause the guide wheels 203 and the transition plate 304 to separate, and vice versa, thus completing a smooth transition of abutment.

[0050] It should be noted that the advantage of the present application is that the dual guide wheel structure is used to realize the automatic opening and closing of the top cover assembly 30 by using the power of the cage frame assembly 20. Specifically, the dual guide wheels are the flip wheels 206, and the two flip wheels 206 are located on the outside of the frame 201, that is, the distance between the two flip wheels 206 is greater than the width of the frame 201, that is, when the frame 201 retreats a predetermined distance, the two flip wheels 206 will respectively cooperate with the two flip wheel sleeves 105. Specifically, as Figure 2As shown, the turnover wheel sleeve 105 is provided with an open matching cavity on one side of the turnover wheel 206. In addition, the turnover wheel 206 is rotationally connected to the frame body 201, that is, when the frame body 201 retreats to a predetermined position, the two turnover wheels 206 are respectively sleeved in the corresponding matching cavities. At this time, the frame body 201 rotates around the turnover wheel 206, that is, the tail of the frame body 201 swings downward, and the head swings upward. At this time, the two side guide wheels 203 press the guide rail top surface 3021, so that the cover plate 301 swings upward around the hinge shaft sleeve 305, so that the cover plate 301 is opened. Then, when the frame body 201 rotates to a predetermined angle, the two side guide wheels 203 pass through the corresponding lateral guide rail 302. At this time, when the two side guide rails 302 contact the corresponding transition plate 304, two or one top cover guide wheels 303 arranged on the cover plate 301 directly contact the corresponding guide plate 204. However, at this time, the top cover guide wheel 303 contacts the corresponding guide plate 204, so that when the frame body 201 continues to rotate, the cover plate 301 swings downward until the frame body 201 is in a vertical state. At this time, the two top cover guide wheels 303 also contact the corresponding guide plate 204, so as to facilitate the subsequent rotation of the frame body 201. Therefore, through the transition structure of the top cover guide wheel 303 and the turnover wheel 206, the automatic opening and closing of the top cover assembly 30 is realized.

[0051] In addition, it should be noted that the wall surface forming the open matching cavity is also provided with an annular groove, that is, when the turnover wheel 206 is placed in the matching cavity, it can be matched with the annular groove, so as to limit the position of the turnover wheel 206. In addition, the transition plate 304 and the lateral guide rail 302 can be realized by welding. In addition, the structure of the transition plate 304 is as shown in the figure. Figure 5 As shown, it includes a side wall and a bottom wall, the side wall and the bottom wall are perpendicular, and the bottom wall is at a predetermined angle with the guide rail top surface 3021, that is, the bottom wall is bent away from the guide rail bottom surface 3022. Specifically, the side wall is welded at the tail of the lateral guide rail 302. In addition, the cover plate 301 is provided with a notch for the bottom wall to pass through. In addition, when the side guide wheel 203 moves on the bottom wall of the transition plate 304, the top cover guide rail 303 smoothly contacts the corresponding guide plate 204, so as to realize the smooth transition between the two guide wheels.

[0052] In addition, it needs to be explained that the express delivery vehicle is further provided with a first driving assembly (not shown in the figure) and a second driving assembly (not shown in the figure), the first driving assembly is a horizontal push rod, the second driving assembly is an inclined push rod, and the first driving assembly and the second driving assembly are connected with the bottom of the frame body 201. Specifically, the horizontal movement of the frame body 201 is realized by the first driving assembly, and the rotation of the frame body 201 is realized by the second driving assembly, that is, the first driving assembly pushes the frame body 201 to a predetermined position, that is, the two turnover wheels 206 are matched with the corresponding turnover wheel sleeves 105, at this time, the second driving assembly operates to make the frame body 201 overturn, at this time, the first driving assembly connected with the frame body 201 is separated from the frame body 201, and vice versa. In addition, it needs to be explained that in the process of horizontal movement of the frame body 201, the two side guide wheels 203 roll on the corresponding guide rail bottom surfaces 3022 respectively, so that the downward pressure is applied to the cover plate 301, and the cover plate 301 is also in contact with the two buffer seats 102, so that the cover plate 301 is clamped between the two buffer seats 102, which can ensure that the top cover assembly 30 of the express delivery vehicle is tightly attached to the vehicle body during operation without shaking.

[0053] In summary, the express delivery vehicle top cover automatic opening and closing mechanism based on the embodiment of the present application is illustrated, which provides the advantages of no need to stretch the top cover, low cost, simple structure and the like for the express delivery vehicle top cover automatic opening and closing mechanism.

[0054] It is worth mentioning that in the embodiment of the present application, the express delivery vehicle top cover automatic opening and closing mechanism is simple in structure, does not involve complex manufacturing process and expensive materials, and has high economy. At the same time, for the manufacturer, the express delivery vehicle top cover automatic opening and closing mechanism provided by the present application is easy to produce and low in cost, which is more conducive to controlling the production cost and further conducive to product promotion and use.

[0055] Those skilled in the art should understand that the embodiments of the utility model shown in the above description and the drawings are only taken as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structural principle of the utility model have been shown and explained in the embodiments, and the implementation of the utility model can be any deformation or modification without departing from the principle.

Claims

1. A mechanism for automatically opening and closing a roof of a delivery vehicle, characterized by, The automatic opening and closing mechanism of the express delivery vehicle roof cover comprises a vehicle frame assembly, a cage frame assembly and a roof cover assembly, the roof cover assembly is rotatably arranged on the top of the vehicle frame assembly, and the cage frame assembly is movably connected with the vehicle frame assembly and located below the roof cover assembly, the cage frame assembly is arranged to be transversely movable to a predetermined distance and to be rotatable at a predetermined position, at this time, the tail of the cage frame assembly is downward and the head is lifted, so that the roof cover assembly is pressed to swing upward, and when the cage frame assembly is rotated to a predetermined angle, the roof cover assembly swings downward until the tail of the cage frame assembly contacts the ground and the head abuts against the roof cover assembly, wherein the cage frame assembly comprises two side guide wheels, the two side guide wheels are arranged on the top of the tail of the cage frame assembly and are oppositely arranged, and the roof cover assembly comprises a cover plate and two connecting assemblies, the two connecting assemblies are oppositely arranged and are fixed on one side of the cover plate close to the cage frame assembly, each connecting assembly comprises a lateral guide rail, a roof cover guide wheel and a transition plate, the two lateral guide rails are matched with the two side guide wheels respectively, and when the cage frame assembly rotates, the side guide wheels move along the lateral guide rails and push the cover plate, and in addition, when the side guide wheels are separated from the lateral guide rails and contact the transition plate, the roof cover guide wheel of the roof cover assembly contacts the cage frame assembly.

2. The automatic opening and closing mechanism of the express delivery vehicle roof cover according to claim 1, wherein the vehicle frame assembly comprises two rear supports and two buffer seats, the vehicle frame assembly is fixed on the express vehicle, the two rear supports are fixed on the tail of the express vehicle and are spaced apart by a predetermined distance, and the two buffer seats are respectively fixed on the top ends of the two rear supports, and in addition, the buffer seats are elastic elements.

3. The automatic opening and closing mechanism of the express delivery vehicle roof cover according to claim 2, wherein the vehicle frame assembly further comprises two front supports, two hinged seats, two turnover wheel sleeves and two translation guide rails, the two front supports are fixed on the front of the express vehicle and are spaced apart by a predetermined distance, the two hinged seats are respectively fixed on the top of the two front supports, the two turnover wheel sleeves are fixed on the side close to the bottom of the two rear supports and close to each other, the two translation guide rails are oppositely arranged and are spaced apart by a predetermined distance, and the translation guide rails are fixed on the express vehicle and one end of the translation guide rails is close to the front supports and the other end is close to the rear supports.

4. The automatic opening and closing mechanism of the express delivery vehicle roof cover according to claim 3, wherein the cage frame assembly comprises a frame body, a front baffle and a guide plate, the front baffle is fixed on one end of the frame body and is perpendicular to the frame body, and the two side guide wheels are rotatably fixed on the top of the front baffle and are spaced apart by a predetermined distance, and in addition, the guide plate is fixed in front of the front baffle and has the same length as the front baffle.

5. The automatic opening and closing mechanism of the roof cover of the express delivery vehicle according to claim 4, wherein the cage frame assembly further includes a plurality of translation wheels and two flip wheels, the plurality of translation wheels are respectively rotatably fixed on the front sides and the middle and rear sides of the frame body, and the two flip wheels are fixed on both sides of the lower middle and rear end of the frame body, wherein when the cage frame assembly moves laterally a predetermined distance, the two flip wheels are respectively placed in the two flip wheel sleeves and are hinged to the corresponding flip wheel sleeves.

6. The automatic opening and closing mechanism of the roof cover of an express delivery vehicle according to claim 4, wherein the lateral guide rail is fixed under the cover plate, the lateral guide rail includes a guide rail top surface and a guide rail bottom surface, the top cover guide wheel is fixed on the cover plate and is located on one side of the lateral guide rail, the distance between the guide rail top surface and the guide rail bottom surface is greater than the diameter of the side guide wheel, the top cover guide wheel is arranged at the tail of the cover plate, and the transition plate is fixed at the tail of the lateral guide rail.

7. The automatic opening and closing mechanism of the roof cover of the express delivery vehicle according to claim 6, wherein each of the connecting components also includes an articulated sleeve, the articulated sleeve is fixed to the front part of the lateral guide rail, and the two articulated sleeves are respectively articulated to the two articulated seats, and the two side guide wheels are also respectively matched with the two lateral guide rails.

8. The automatic opening and closing mechanism of the roof cover of an express delivery vehicle according to claim 6, wherein the transition plate has a side wall and a bottom wall, the side wall is perpendicular to the bottom wall, and the bottom wall forms a predetermined angle with the top surface of the guide rail, the bottom wall is bent in a direction away from the bottom surface of the guide rail, the side wall is welded to the tail of the lateral guide rail, and the cover plate is provided with a notch for the bottom wall to pass through.

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