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

Abstract

The invention 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. By effectively utilizing the structural configuration of the top cover, the top cover does not need to stretch out and draw back, the cost is low, and the structure is simple.

Description

Technical Field

[0001] The present application relates to the field of express delivery vehicles, and more specifically to an automatic opening and closing mechanism for a roof of an express delivery vehicle. Background Art

[0002] With the rapid development of online shopping and logistics industry, the demand for unmanned express delivery is also gradually increasing. Unmanned delivery vehicles are a product that has emerged for the current terminal delivery market and the development of unmanned driving. Its main purpose is to complete the handling of cage boxes, which are containers for express delivery. The cage boxes are transferred or delivered by unmanned delivery vehicles. Express delivery vehicles are usually equipped with a top cover to prevent water leakage. However, the cage boxes of existing unmanned delivery vehicles are often flipped onto the express delivery vehicle and then moved horizontally to the front of the vehicle. Since the height of the cage box bracket will exceed the height of the top cover during the flipping process, the top cover needs to be set to an openable or retractable structure. Therefore, the flipping structure of the existing express delivery vehicle top cover is complex and costly. In response to this problem, there is a need to provide an automatic opening and closing mechanism for the top cover of an express delivery vehicle that does not require a retractable top cover, has low cost and simple structure. Summary of the invention

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

[0004] Another object of the present application is to provide an automatic opening and closing mechanism for the roof cover of an express delivery vehicle, wherein the automatic opening and closing mechanism for the roof cover of the express delivery vehicle comprises a frame assembly, a cage frame assembly and a top cover assembly, wherein the top cover assembly is rotatably arranged on the top of the frame assembly, and the cage frame assembly is also movably connected to the frame assembly and is located on the lower side of the top cover assembly, and the cage frame assembly is configured to be able to move laterally to a predetermined distance and rotate at a predetermined position, at which time the head of the cage frame assembly will be downward and the tail will be raised, so that the top cover assembly is squeezed and swings upward until the head of the cage frame assembly contacts the ground and the tail rests on the top cover assembly, that is, the structure of the top cover assembly is simplified by moving the cage frame assembly and pushing open the top cover assembly, thereby achieving low cost of the product.

[0005] Another object of the present application is to provide an automatic opening and closing mechanism for the roof cover of an express delivery vehicle, wherein the automatic opening and closing mechanism for the roof cover of the express delivery vehicle has a simple structure and is easy to operate, does not involve complicated manufacturing processes and expensive materials, has high economy, and is easy to promote and use.

[0006] In order to achieve at least one of the above-mentioned invention purposes, the present application provides an automatic opening and closing mechanism for the roof cover of an express delivery vehicle, wherein the automatic opening and closing mechanism for the roof cover of the express delivery vehicle comprises: a frame assembly, a cage frame assembly and a top cover assembly, the top cover assembly is rotatably disposed on the top of the frame assembly, and the cage frame assembly is also movably connected to the frame assembly and is located on the lower side of the top cover assembly, the cage frame assembly is configured to be able to move laterally to a predetermined distance and rotate at a predetermined position, at which time the head of the cage frame assembly will be downward and the tail will be lifted, so that the top cover assembly is squeezed and swings upward until the head of the cage frame assembly contacts the ground and the tail rests on the top cover assembly.

[0007] In one or more embodiments of the present application, the frame assembly includes two rear brackets and two buffer seats. The frame assembly is fixed on the express vehicle, and the two rear brackets are fixed to the rear of the express vehicle and are spaced a predetermined distance apart. The two buffer seats are respectively fixed to the top ends of the two rear brackets, and the buffer seats are elastic elements.

[0008] In one or more embodiments of the present application, the frame assembly also includes two front brackets, two articulated seats, two flip wheel sleeves and two translation guide rails, the two front brackets are fixed to the front of the express vehicle and are spaced a predetermined distance apart, and the two articulated seats are distributed and fixed on the tops of the two front brackets, the two flip wheel sleeves are fixed on the sides of the two rear brackets that are close to each other and close to the bottoms of the rear brackets, the two translation guide rails are arranged opposite to each other and spaced a predetermined distance apart, and the translation guide rails are fixed on the express vehicle, and one end of the translation guide rail is close to the front bracket and the other end is close to the rear bracket.

[0009] In one or more embodiments of the present application, the cage frame assembly includes a frame body, a front baffle, two side guide wheels and a guide plate. The front baffle is fixed at 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 a predetermined distance apart. In addition, the guide plate is fixed in front of the front baffle, and its length is consistent with that of the front baffle.

[0010] In one or more embodiments of the present application, the cage frame assembly also includes a plurality of translation wheels and two flip wheels, wherein the plurality of translation wheels are rotatably fixed on both sides of the front and both sides of the middle and rear 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.

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

[0012] In one or more embodiments of the present application, each of the connecting components includes a lateral guide rail and a top cover guide wheel, 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, 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, the connecting assembly also includes a transition plate and an articulated sleeve, wherein the transition plate is fixed to the rear end of the lateral guide rail, the articulated sleeve is fixed to the front end 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] These and / or other aspects and advantages of the present application will become clearer and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which: Figure 1 The figure shows the overall composition diagram of an automatic opening and closing mechanism of the roof of an express delivery vehicle.

[0015] Figure 2 The figure shows a schematic structural diagram of the frame assembly.

[0016] Figure 3 The figure shows a schematic structural diagram of the cage frame assembly.

[0017] Figure 4 The figure shows a schematic structural diagram of the top cover assembly.

[0018] Figure 5 The figure shows a schematic diagram of the state where the side guide wheel abuts against the side guide rail.

[0019] Figure 6 The figure shows a schematic diagram of the state where the side guide wheel abuts against the transition plate.

[0020] Figure 7 The figure shows a schematic diagram of the state in which the side guide wheel and the transition plate, and the top cover guide wheel and the guide plate are simultaneously abutted.

[0021] Figure 8 The figure shows a schematic diagram of the state where the top cover guide wheel and the guide plate are in contact.

[0022] Fig. 9 The diagram shows the cage frame assembly moved forward into position.

[0023] Fig.10 The figure shows the horizontal state of the cage frame assembly.

[0024] Fig.11 The figure shows the side guide wheel abutment state.

[0025] Fig.12 The figure shows the top cover guide wheel abutment state.

[0026] Fig.13 The figure shows the vertical state of the cage frame assembly.

[0027] Fig.14 The figure shows a schematic diagram of the transition plate principle. DETAILED DESCRIPTION

[0028] The terms and words used in the following specification and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustrative purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.

[0029] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0030] Although ordinals such as "first," "second," and the like will be used to describe various components, those components are not limited herein. The term is used only to distinguish one component from another. For example, a first component may be referred to as a second component, and likewise, a second component may be referred to as a first component without departing from the teachings of the inventive concept. The term "and / or" as used herein includes any and all combinations of one or more associated listed items.

[0031] The terms used herein are only used for the purpose of describing various embodiments and are not intended to be limiting. As used herein, singular forms are intended to also include plural forms, unless the context clearly indicates an exception. In addition, it will be understood that the terms "including" and / or "having" when used in this specification specify the presence of the described features, numbers, steps, operations, components, elements or combinations thereof, without excluding the presence or addition of one or more other features, numbers, steps, operations, components, elements or groups thereof.

[0032] refer to Figures 1 to 14 According to a preferred embodiment of the present invention, the automatic opening and closing mechanism of the roof cover of the express delivery vehicle, it should be noted that the structure of the automatic opening and closing mechanism of the roof cover of the express delivery vehicle is as follows Figure 1As shown, it is arranged on the express delivery vehicle as shown in the figure, and the automatic opening and closing mechanism of the roof cover of the express delivery vehicle includes a frame assembly 10, a cage frame assembly 20 and a top cover assembly 30, the top cover assembly 30 is rotatably arranged on the top of the frame assembly 10, and the cage frame assembly 20 is also movably connected to the frame assembly 10 and is located at the lower side of the top cover assembly 30. Specifically, the operation mode of the above-mentioned cage frame assembly 20 and the top cover assembly 30 is that the cage frame assembly 20 is arranged to be able to move laterally to a predetermined distance, and at the same time, as shown in Fig.10 The cage frame assembly 20 can be rotated to the predetermined position shown in the figure, at which time the tail of the cage frame assembly 20 will be downward and the head will be raised, so that the top cover assembly 30 is squeezed and swung upward until the tail of the cage frame assembly 20 touches the ground and the head rests on the top cover assembly 30, that is, Fig.13 Status shown.

[0033] It should be noted that the frame assembly includes two rear brackets 101, two buffer seats 102, two front brackets 103, two hinged seats 104, two flip wheel sleeves 105 and two translation guide rails 106. It is worth mentioning that the frame assembly is fixed on the above-mentioned express vehicle, and the two rear brackets 101 are fixed to the tail of the express vehicle 01 and are spaced at a predetermined distance, and the two buffer seats 102 are respectively fixed to the top ends of the two rear brackets 101, and the buffer seats 102 are elastic elements. In addition, the two front brackets 103 are fixed to the front of the express vehicle 01 and are spaced apart by a predetermined distance, and the two hinge seats 104 are distributed and fixed on the tops of the two front brackets 103, the two flip wheel sleeves 105 are fixed on the sides of the two rear brackets 101 that are close to each other and close to the bottom of the rear brackets 101, the two translation guide rails 106 are arranged opposite to each other and are spaced apart by a predetermined distance, and the translation guide rails 106 are fixed on the express vehicle, and one end of the translation guide rail 106 is close to the front bracket 103, and the other end is close to the rear bracket 101, that is, Figure 2 Position shown.

[0034] Specifically, the cage frame assembly includes a frame body 201, a front baffle 202, guide wheels 203 on both sides, a guide plate 204, a plurality of translation wheels 205 and two flip wheels 206, wherein the front baffle 202 is fixed at one end of the frame body 201 and is perpendicular to the frame body 201, and the guide wheels 203 on both sides are rotatably fixed to the top of the front baffle 202 and are spaced apart by a predetermined distance, and the guide plate 204 is fixed in front of the front baffle 202, that is, the side of the front baffle 202 away from the frame body 201, and its length is consistent with that of the front baffle 202, wherein the plurality of translation wheels 205 are rotatably fixed to the front two sides and the middle and rear two sides of the frame body 201, and the two flip wheels 206 are arranged on both sides of the lower part of the middle and rear end of the frame body 201. It is also worth mentioning that the number of the above-mentioned guide plates 204 is at least one, and if it is implemented as two, the two guide plates 204 need to be spaced apart by a predetermined distance so as to be located on both sides of the front baffle 202.

[0035] Specifically, the top cover assembly includes a cover plate 301 and two connecting assemblies, and the two connecting assemblies are distributed on both sides of the cover plate 301, and each of the connecting assemblies includes a lateral guide rail 302, a top cover guide wheel 303, a transition plate 304 and a hinged shaft sleeve 305. The lateral guide rail 302 is fixed under the cover plate 301, and the lateral guide rail 302 includes 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 is 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 rear of the cover plate 301, the transition plate 304 is fixed at the rear of the lateral guide rail 302, and the hinged shaft sleeve 305 is fixed at the front of the lateral guide rail 302. In addition, the transition plate 304 further has a contact surface 3041 .

[0036] It should be noted that after the flip wheel 206 of the cage frame assembly 20 enters into the flip wheel sleeve 105 and is hinged to the flip wheel sleeve 105, the cage frame assembly 20 can be flipped around the tailgate of the express vehicle 01. In addition, the cage frame assembly 20 can slide in the translation guide rail 106 through the multiple translation wheels 205, so that the cage frame assembly 20 can be translated on the express vehicle, wherein the top cover assembly 30 is hinged to the hinge seat 104 through the hinged shaft sleeve 305, so that the top cover assembly 30 can be flipped around the front top of the frame assembly 10.

[0037] It is worth mentioning that the unloading process of the express truck 01 is: the cage frame assembly 20 moves backward - moves backward to the correct position - rotates counterclockwise - the cage frame assembly 20 is vertical.

[0038] When the cage frame assembly 20 is horizontal, the side guide wheel 203 is located in the side guide rail 302, the rear end of the top cover assembly 30 abuts against the buffer seat 102, and the top cover assembly and the side guide rail 302 are horizontal (horizontally relative to the body of the express delivery vehicle 01). Fig. 9 At this time, the cage frame assembly 20 moves forward and backward and the top cover assembly 30 does not open or close.

[0039] In addition, when the cage frame assembly 20 moves to the rear, the cage frame assembly 20 rotates counterclockwise, and the side guide wheel 203 abuts against the guide rail top surface 3021 of the side guide rail 302, and the side guide wheel 203 drives the top cover assembly 30 to gradually open upward. Fig.11 shown.

[0040] When the side guide wheel 203 approaches the tail end of the side guide rail 302, Figure 5 As shown, at this time, the top cover guide wheel 303 is located outside the front baffle 202, and the two will not interfere with each other.

[0041] In addition, when the side guide wheel 203 passes the tail of the side guide rail 302 and abuts against the front of the transition plate 304, the top cover guide wheel 303 is located above the front baffle 202. As the cage frame assembly 20 continues to rotate counterclockwise, the top cover guide wheel 303 can smoothly enter the baffle 202.

[0042] like Figure 7 As shown, as the cage frame assembly 20 continues to rotate counterclockwise, the side guide wheel 203 abuts against a certain position in the middle of the transition plate 304, and the top cover guide wheel 303 just abuts against the guide plate 204.

[0043] like Figure 8 As shown, as the cage frame assembly 20 continues to rotate counterclockwise, the top cover guide wheel 303 and the guide plate 204 remain in contact, and the side guide wheel 203 and the transition plate 304 gradually move away from each other. Thus, a smooth transition of the guide wheel contact is completed.

[0044] like Fig.12 As shown, as the cage frame assembly 20 continues to rotate counterclockwise, due to the effect of gravity, the top cover guide wheel 303 always keeps in contact with the guide plate 204 until the cage frame assembly 20 is in a vertical state, as shown in FIG. Fig.13 As shown, at this time, the front end of the top cover assembly 20 is still located above the cage frame assembly 20, which is a prerequisite for the cage to rotate clockwise and automatically open and close during the loading process. On the contrary, during the loading process of the express delivery vehicle 01, the top cover assembly 30 can still rely on the power of the cage frame assembly 20 to automatically open and close in a follow-up manner.

[0045] 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.

[0046] When the cage frame assembly 20 rotates clockwise to nearly horizontal, the cover plate 301 will abut 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.

[0047] 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.

[0048] like Fig.14 As shown, when the side guide wheel 203 and the transition plate 304, and the top cover guide wheel 303 and the guide plate 204 are in contact at the same time, the extension line of the contact surface 3041 of the transition plate 304 and the outer extension line of the guide plate 204 are designed to be gradually enlarged. When the cage frame assembly 20 rotates clockwise, the top cover guide wheel 303 moves toward the inner side of the guide plate 204, and the side guide wheel 203 moves toward the outer side of the transition plate 304. Since the inner side of the two lines is narrower than the outer side, the contact between the top cover guide wheel 303 and the guide plate 204 under the action of gravity will inevitably separate the guide wheel 203 from the ferry plate 304, and vice versa, so that a smooth transition of the contact can be completed.

[0049] It should be noted that the advantage of the present application is that the double 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 double 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, Figure 2As shown, the flip wheel sleeve 105 has a mating cavity with an opening on one side close to the flip wheel 206, and the flip wheel 206 is rotatably connected to the frame 201, that is, when the frame 201 retreats to a predetermined position, the two flip wheels 206 will be respectively sleeved in the corresponding mating cavities, and the frame 201 will rotate with the flip wheel 206 as the center, that is, the tail of the frame 201 will swing downward and the head will swing upward, and the two side guide wheels 203 will squeeze the top surface 3021 of the guide rail, so that the cover plate 301 will swing upward with the hinge sleeve 305 as the center, so that the cover plate 301 is opened. Then when the frame 201 rotates to a predetermined angle, the two side guide wheels 203 will pass through the corresponding side guide rails 302. At this time, when the two side guide rails 302 contact the corresponding transition plates 304, the two or one top cover guide wheels 303 arranged on the cover plate 301 will directly contact the corresponding guide plates 204. However, since the top cover guide wheels 303 are in contact with the corresponding guide plates 204 at this time, when the frame 201 continues to rotate, the cover plate 301 will swing downward until the frame 201 is in a vertical state. At this time, the two top cover guide wheels 303 are also in contact with the corresponding guide plates 204 to facilitate the subsequent rotation of the frame 201. Therefore, the automatic opening and closing of the top cover assembly 30 is realized through the transition structure setting of the above-mentioned top cover guide wheels 303 and the flip wheel 206.

[0050] It should be noted that the wall of the matching cavity with an opening also has an annular groove, that is, when the flip wheel 206 is placed in the matching cavity, it can be placed in cooperation with the annular groove, thereby limiting the position of the flip 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 follows: Figure 5 As shown, it includes a side wall and a bottom wall, the side wall is vertically arranged to the bottom wall, and the bottom wall forms a predetermined angle with the top surface 3021 of the guide rail, that is, the bottom wall is bent in the direction away from the bottom surface 3022 of the guide rail. Specifically, the side wall is welded to the tail of the side guide rail 302, and 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 will smoothly contact the corresponding guide plate 204, thereby realizing a smooth transition between the double guide wheels.

[0051] It should also be noted that the above-mentioned express delivery vehicle is also provided with a first drive assembly (not shown in the figure) and a second drive assembly (not shown in the figure), the first drive assembly is a horizontal push rod, the second drive assembly is an inclined push rod, and the first drive assembly and the second drive assembly are both connected to the bottom of the frame 201. Specifically, the horizontal movement of the frame 201 is realized by the first drive assembly, and the rotation of the frame 201 is realized by the second drive assembly, that is, the first drive assembly pushes the frame 201 to a predetermined position, that is, the two flip wheels 206 cooperate with the corresponding flip wheel sleeves 105, and at this time, the second drive assembly operates to make the frame 201 flip, and at this time, the first drive assembly connected to the frame 201 will be separated from the frame 201, and vice versa, when the first drive assembly is to reset the frame 201, the second drive assembly will be separated from the frame 201. It should also be noted that when the frame 201 is moving horizontally, the guide wheels 203 on both sides roll on the corresponding guide rail bottom surfaces 3022, thereby applying downward pressure to the cover plate 301. At the same time, the cover plate 301 is also in contact with the two buffer seats 102, so that the cover plate 301 is stuck between the two, which can ensure that the top cover assembly 30 is tightly fitted to the vehicle body without shaking during the operation of the express vehicle.

[0052] In summary, the automatic opening and closing mechanism of the roof cover of the express delivery vehicle based on the embodiment of the present application is explained, which provides the automatic opening and closing mechanism of the roof cover of the express delivery vehicle with advantages such as no need for the roof to be retracted, low cost, and simple structure.

[0053] It is worth mentioning that in the embodiment of the present application, the automatic opening and closing mechanism of the roof cover of the express delivery vehicle is simple in structure, does not involve complex manufacturing processes and expensive materials, and has high economic efficiency. At the same time, for manufacturers, the automatic opening and closing mechanism of the roof cover of the express delivery vehicle provided by the present application is easy to produce and has low cost, which is more conducive to controlling production costs and further conducive to product promotion and use.

[0054] It should be understood by those skilled in the art that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments, and the embodiments of the present invention may be deformed or modified in any way without departing from the principles.

Claims

1. An automatic opening and closing mechanism for the roof of a courier delivery vehicle, characterized in that: The automatic opening and closing mechanism of the roof cover of the express delivery vehicle includes: a frame assembly, a cage frame assembly and a top cover assembly, the top cover assembly is rotatably arranged on the top of the frame assembly, and the cage frame assembly is also movably connected to the frame assembly and is located at the lower side of the top cover assembly, the cage frame assembly is configured to be able to move laterally to a predetermined distance and rotate at a predetermined position, at which time the tail of the cage frame assembly will be downward and the head will be raised, so that the top cover assembly is squeezed and swings upward, and when the cage frame assembly is rotated to a predetermined angle, the top cover assembly will swing downward until the tail of the cage frame assembly touches the ground and the head rests on the top cover assembly. The cage frame assembly includes guide wheels on both sides, the two side guide wheels are located at the top of the tail of the cage frame assembly and are arranged opposite to each other, and the top cover assembly includes a cover plate and two connecting components, the two connecting components are arranged opposite to each other and are both fixed on one side of the cover plate close to the cage frame assembly, each connecting component includes a side guide rail, a top cover guide wheel and a transition plate, the two side guide wheels are respectively matched with the two side guide rails, and when the cage frame assembly rotates, the side guide wheels will move along the side guide rails and push open the cover plate, and when the side guide wheels are separated from the side guide rails and contact the transition plate, the top cover guide wheels of the top cover assembly will contact the cage frame assembly.

2. According to claim 1, the automatic opening and closing mechanism of the roof cover of the express delivery vehicle, wherein the frame assembly includes two rear brackets and two buffer seats, the frame assembly is fixed on the express vehicle, and the two rear brackets are fixed to the rear of the express vehicle and are spaced a predetermined distance apart, the two buffer seats are respectively fixed to the top ends of the two rear brackets, and the buffer seats are elastic elements.

3. The automatic opening and closing mechanism of the roof cover of an express delivery vehicle according to claim 2, wherein the frame assembly also includes two front brackets, two articulated seats, two flip wheel sleeves and two translation guide rails, the two front brackets are fixed to the front of the express delivery vehicle and are spaced a predetermined distance apart, and the two articulated seats are respectively fixed to the tops of the two front brackets, the two flip wheel sleeves are fixed to the sides of the two rear brackets that are close to each other and close to the bottoms of the rear brackets, the two translation guide rails are arranged opposite to each other and are spaced a predetermined distance apart, and the translation guide rails are fixed on the express delivery vehicle, and one end of the translation guide rail is close to the front bracket, and the other end is close to the rear bracket.

4. The automatic opening and closing mechanism of the roof cover of the express delivery vehicle according to claim 3, wherein the cage frame assembly includes a frame body, a front baffle and a guide plate, the front baffle is fixed at one end of the frame body and is perpendicular to the frame body, and the guide wheels on both sides are rotatably fixed on the top of the front baffle and are spaced a predetermined distance apart, and the guide plate is fixed in front of the front baffle, and its length is consistent with that of the front baffle.

5. According to the automatic opening and closing mechanism of the roof cover of the express delivery vehicle according to claim 4, the cage frame assembly also includes a plurality of translation wheels and two flip wheels, the plurality of translation wheels are rotatably fixed on the two sides of the front and the two sides of the middle and rear of the frame body, and the two flip wheels are fixed on both sides of the lower part of the 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 the 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 spacing 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 rear part of the cover plate, and the transition plate is fixed at the rear part of the lateral guide rail.

7. According to the automatic opening and closing mechanism of the roof of the express delivery vehicle as described in claim 7, 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 with 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 the express delivery vehicle according to claim 6, wherein the transition plate has a side wall and a bottom wall, the side wall is vertically arranged 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 the 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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