Charging head floating mechanism and charging pile with the same

Abstract

An embodiment of the present invention relates to a charging head floating mechanism, characterized in that it includes: a floating skateboard assembly, including a floating skateboard and a charging head connector installed on the floating skateboard; and a fixed frame assembly, including: a first plate, connected to the floating skateboard through a plurality of elastic components, so that the floating skateboard can move in a plurality of directions relative to the first plate, the first plate including one or more universal balls facing the floating skateboard; and a second plate, fixedly connected to the first plate, so that the floating skateboard is located between the first plate and the second plate, the second plate including one or more universal balls facing the floating skateboard.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and in particular to a charging head floating mechanism, a charging pile including the charging head floating mechanism, and an AGV trolley that uses the charging pile for automatic charging. Background Art

[0002] In recent years, electric vehicles have been widely used in industry and life. In particular, in some industrial applications, many charging processes have been separated from manual operation. For example, with the rapid development of intelligence and automation, the emergence of AGV (Automatic Guided Vehicle) has greatly solved the various problems faced by manual operation in traditional industrial applications. AGV trolleys usually refer to transport vehicles equipped with automatic guidance devices such as electromagnetic or optical, capable of traveling along a specified guidance path, with safety protection and various transfer functions. When the battery is insufficient and needs to be charged, the AGV trolley can self-position and guide to the charging pile adapted to it (generally fixed to the ground or wall of the workplace) for charging. Generally speaking, the charging of the AGV trolley is achieved by inserting the charging head on the charging pile into the charging port on the AGV trolley. Since there is always a certain deviation in the automatic alignment of the charging head and the charging port, the charging head cannot be inserted into the charging port and the charging fails; more seriously, it is likely to cause damage to the charging head or the charging port. Existing charging heads are often equipped with floating mechanisms to adjust their positions with the charging port during the alignment process, thereby reducing or offsetting the deviation to achieve charging.

[0003] Figure 1A to Figure 1B An example of an existing charging head floating mechanism 100 is shown in FIG. 1 , on which a charging head 101 is installed. As shown in the figure, the charging head 101 is installed on a fixed slide rail 103 through a roller bracket 102 with a charging head connector. During the alignment process between the charging head and the charging port, the charging head 101 can move along the fixed slide rail 103 in two opposite directions along the slide rail (such as Figure 1A The floating mechanism 100 of the charging head can adjust its position in only one direction. However, the floating mechanism 100 of the charging head can only realize the floating of the charging head in a single direction. With respect to various forms of alignment deviation, the floating mechanism of the prior art still cannot completely solve the above technical problems. Therefore, how to overcome the alignment deviation between the charging head and the charging port, thereby realizing efficient automatic charging and reducing damage to the charging accessories is still an important problem to be solved.

[0004] The above information disclosed in the Background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not form the prior art that is known to a person of ordinary skill in the art. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a charging head floating mechanism, characterized in that it includes: a floating skateboard assembly, including a floating skateboard and a charging head connector installed on the floating skateboard; and a fixed frame assembly, including: a first plate; and a second plate fixedly connected to the first plate, wherein the floating skateboard is located between the first plate and the second plate, and can move relative to the first plate and the second plate.

[0006] According to one aspect of the present invention, the fixing frame assembly further comprises a third plate connected to the first plate and having a middle opening, and the floating slide assembly passes through the middle opening.

[0007] According to one aspect of the present invention, the heights of the first plate and the second plate relative to the third plate are adjustable, and the first plate and the second plate are connected to the third plate via threaded columns and nuts, and the heights of the first plate and the second plate relative to the third plate can be adjusted by adjusting the nuts.

[0008] According to one aspect of the present invention, the charging head floating mechanism also includes a connecting column, which fixes the first plate and the second plate together, and the connecting column has a hole. The screw passes through the hole on the connecting column and the hole on the third plate to guide the first plate and the second plate to move relative to the third plate.

[0009] According to one aspect of the present invention, the first plate is connected to the floating slide plate through a plurality of elastic components, so that the floating slide plate can move in a plurality of directions relative to the first plate. The elastic components are telescopic springs, each of which has one end connected to the floating slide plate and the other end connected to the first plate.

[0010] According to one aspect of the present invention, the floating mechanism of the charging head includes three elastic components, the floating skateboard is respectively provided with connecting holes at its left and right ends and the upper end, and the first plate is respectively provided with corresponding connecting holes at its left and right ends and the upper end for connecting the elastic components.

[0011] According to one aspect of the present invention, a first group of rolling members is arranged on a side of the first plate facing the floating skateboard; a corresponding second group of rolling members is arranged on a side of the second plate facing the floating skateboard, and the first group of rolling members and the second group of rolling members respectively contact the floating skateboard, wherein the first group of rolling members and the second group of rolling members are universal balls.

[0012] According to one aspect of the present invention, the first group of rolling elements of the first plate respectively correspond to the second group of rolling elements of the second plate, and the central axes of each pair of corresponding rolling elements are on the same straight line.

[0013] The present invention also relates to a charging pile, comprising: the charging head floating mechanism as described above; and a charging head connected to a charging head connector of the charging head floating mechanism.

[0014] The present invention also relates to an automatic guided vehicle, which is automatically charged by means of the charging pile as described above.

[0015] The present invention also relates to a method for charging an automatic guided vehicle using the charging pile as described above.

[0016] Since the embodiment of the present invention adopts the above technical solution, it has the following advantages: the floating slide and the universal ball in the fixed frame assembly form a planar sliding pair, thereby enabling arbitrary sliding within the plane and enabling the charging head to float at any angle in all directions of 360°, thereby obtaining sufficiently precise alignment between the charging head and the charging port, while avoiding premature damage to the charging accessories due to alignment deviation.

[0017] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar parts or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments disclosed in the present invention and should not be regarded as limiting the scope of the present invention.

[0019] Figure 1A The figure is a schematic diagram of an example of a floating mechanism of a charging head in the prior art, on which a charging head is mounted.

[0020] Figure 1B for Figure 1A An exploded view of the charging head floating mechanism.

[0021] Figure 2 The figure is a schematic diagram of the structure of a floating mechanism of a charging head according to an embodiment of the present invention.

[0022] Figure 3 It is a partial structural schematic diagram of a floating mechanism of a charging head according to an embodiment of the present invention, which shows an exemplary connection method between the floating slide plate and the first plate.

[0023] Figure 4 It is a partial structural schematic diagram of a charging head floating mechanism according to an embodiment of the present invention, which shows an exemplary connection method of the first plate, the second plate and the third plate of the fixing frame assembly.

[0024] Figure 5A This is a schematic diagram of the structure of a charging head floating mechanism and a charging head after being assembled according to an embodiment of the present invention.

[0025] Figure 5B For along Figure 5A A cross-sectional view of the floating mechanism of an exemplary charging head of the present invention taken along line AA.

[0026] Figure 6 This is a charging pile according to an embodiment of the present invention.

[0027] Fig. 7A The present invention is an AGV vehicle according to an embodiment of the present invention.

[0028] Figure 7B for Fig. 7A A partial enlarged view of part B. DETAILED DESCRIPTION

[0029] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0030] The disclosure below provides many different embodiments or examples to realize different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or reference letters in different examples, and this repetition is for the purpose of simplicity and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and / or the use of other materials.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] According to a first aspect of the present invention, a charging head floating mechanism is provided. Figure 2 The schematic diagram of the structure of a charging head floating mechanism 200 according to an embodiment of the present invention is shown. As shown in the figure, the charging head floating mechanism 200 includes a floating slide assembly 201 and a fixing frame assembly 202. The following is a detailed description.

[0035] Specifically, the floating skateboard assembly 201 includes a floating skateboard 2012 and a charging head connector 2011 installed on the floating skateboard 2012. According to one embodiment of the present invention, the charging head connector 2011 may be a connecting device suitable for installing any existing charging head. According to another embodiment of the present invention, in a specific industrial application environment, the charging head connector 2011 may also be a connecting device dedicated to a certain type of charging head. According to one embodiment of the present invention, the charging head connector 2011 may be fixedly mounted on the floating skateboard 2012 by conventional connectors such as screws and rivets. According to another embodiment of the present invention, according to application requirements, the charging head connector 2011 may also be formed integrally with the floating skateboard 2012.

[0036] like Figure 5A As shown, the fixed frame assembly 202 also includes a charging head 300. The charging head 300 is connected to the floating skateboard assembly 201 through the charging head connector 2011. For example, a rigid connection can be preferably formed between the three, so that they can move together in one or more directions relative to the fixed frame assembly 202 (described in detail below). The charging head 300 can have various shapes and / or specifications to meet the requirements of different charging devices. Alternatively, the charging head 300 is replaceable. Therefore, when it is suitable for different warehouses and different equipment, compatibility can be achieved by replacing the charging head 300.

[0037] Note that the fixing frame assembly 202 in the present invention can also be adjusted, and does not necessarily have to be fixed, as will be described in detail below.

[0038] Likewise Figure 2 and Figure 4 As shown, the fixing frame assembly 202 according to an embodiment of the present invention includes a first plate (also referred to as a “rear fixing plate”) 2021 . Figure 3 The connection relationship between the first plate 2021 and the floating slide plate 2012 is shown, wherein other components are removed from the figure for the sake of clarity. Figure 3 FIG. 2 shows an example of connection between the floating slide plate 2012 and the first plate 2021 of the fixing frame assembly in the floating mechanism of the charging head according to an embodiment of the present invention. Figure 3 As shown, the first plate 2021 is connected to the floating slide plate 2012 via a plurality of elastic members 2024, so that the floating slide plate 2012 can move in one or more directions relative to the first plate 2021 and can automatically reset. Figure 3In the embodiment shown, the floating skateboard 2012 is connected by three elastic members 2024; in another embodiment of the present invention, there may be two or more than three elastic members 2024. According to one embodiment of the present invention, the elastic members 2024 may be telescopic springs, each of which has one end connected to a connection hole on the floating skateboard 2012 and the other end connected to a corresponding connection hole on the first plate 2021, whereby the floating skateboard 2012 can move in one or more directions relative to the first plate 2021 under the action of the telescopic springs. According to other embodiments of the present invention, the elastic members 2024 may also be other members such as elastic bands that can enable the floating skateboard to move relative to the first plate. Similarly, in Figure 3 In the illustrated embodiment, the floating slide 2012 is provided with connection holes at its left and right ends and the upper end, respectively. Correspondingly, the first plate 2021 is also provided with corresponding connection holes at its left and right ends and the upper end, respectively. According to other embodiments of the present invention, the connection holes of the floating slide 2012 may have different configurations to achieve its movement in multiple directions relative to the first plate 2021 under the action of the elastic member 2024. In this embodiment, the connection holes on the first plate 2021 will also be configured accordingly. In addition, according to another embodiment of the present invention, the connection between the elastic member 2024 and the floating slide 2012 and the first plate 2021 may also be in the form of non-connection holes. Further, according to a preferred embodiment, as Figure 3 As shown in , a threaded shaft 2026 is installed on the upper end of the first plate 2021, and a connecting hole is provided at the bottom of the threaded shaft 2026. The upper end of the threaded shaft 2026 is fixed to the first plate 2021 by a fixing member (butterfly nut) 2027, and the connecting hole at the bottom of the threaded shaft 2026 is hooked with the corresponding elastic member 2024. Of course, the threaded shaft 2026 may not be provided, and the elastic member 2024 may be directly hooked on the connecting hole at the upper end of the first plate 2021, which is within the protection scope of the present invention. In the above embodiment, the floating slide plate 2012 is installed on the first plate 2021 by the elastic member 2024. The protection scope of the present invention is not limited to this, and the floating slide plate 2012 may be installed on the first plate 2021 by other means and the floating slide plate is allowed to move relative to the first plate, such as by means of slide rails in one or more directions. These are within the protection scope of the present invention.

[0039] Connection holes are also provided at the left and right ends of the first plate 2021, which are used to connect the left and right ends of the first plate 2021 to the openings at the left and right ends of the floating slide plate 2012 through another elastic member 2024. For example, the elastic member 2024 can be connected to the left and right ends of the first plate 2021 using screws 2025.

[0040] Therefore, according to the present invention, the floating slide 2012 connected to the charging head is pulled in multiple directions (for example, Figure 3 The floating slide plate is arranged on the first plate 2021, and this flexible connection mode allows the floating slide plate to move in one or more directions within a certain range relative to the first plate 2021, so that it is more flexible when used and can tolerate a large range of misalignment between the charging head and the charging port. Those skilled in the art will understand that the present invention is not limited to the flexible connection arrangement in three directions, and the floating slide plate can also be flexibly arranged on the first plate 2021 in more or fewer directions, which are all within the protection scope of the present invention.

[0041] According to a preferred embodiment of the present invention, in order to make the floating slide plate 2012 move more flexibly and smoothly relative to the first plate 2021, rolling elements (such as universal balls) can be respectively provided on the fixing frame assembly 202. The preferred implementation is described in detail below.

[0042] like Figure 4 and Figure 5B As shown, the first plate 2021 includes one or more universal balls X facing the floating slide 2012. The fixed frame assembly 202 also includes a second plate (also called a "middle plate") 2022, which is fixedly connected to the first plate 2021 (for example, through a connecting column 2032), so that the floating slide 2012 is located between the first plate 2021 and the second plate 2022. The second plate 2022 includes one or more universal balls Y facing the floating slide 2012. Figure 2 In the embodiment shown, there may be four universal balls Y on the second plate; in another embodiment of the present invention, the number of universal balls Y may be less or more. According to one embodiment of the present invention, the number of universal balls X on the first plate may be the same as the number of universal balls Y on the second plate; in another embodiment of the present invention, the number of universal balls X and Y may also be different. Figure 5B The position relationship of the floating slide 2012 is shown more clearly. Figure 5B As shown, the floating slide 2012 is clamped between the first plate 2021 and the second plate 2022, and more specifically, between the universal ball X on the first plate 2021 and the universal ball Y on the second plate 2022. Therefore, when the charging head connector 2011 moves up and down to adapt to the charging height, the floating slide 2012 is driven to move up and down, and a sliding pair is formed between the floating slide 2012 and the first plate 2021 and the second plate 2022, thereby avoiding direct sliding friction contact between the plates, thereby making the entire system run more smoothly and avoiding noise.

[0043] Those skilled in the art will appreciate that in order to set a universal ball on the first plate 2021 and the second plate 2022, corresponding recesses may be set on the first plate 2021 and the second plate 2022 as needed, or corresponding universal ball bearings may be set for setting the universal ball, which will not be described in detail here.

[0044] like Figure 4 As shown, the second plate 2022 is connected to the first plate 2021 through a connecting column 2032. The connecting column 2032 can be integrated with the first plate 2021, or it can be a separate component connected together along the longitudinal direction by bolts. The other end of the connecting column 2032 can have a connecting hole for connecting to the second plate 2022 by bolts. In addition or alternatively, the other end of the connecting column 2032 can have a bayonet or a slot for clamping the second plate 2022, and then the connecting column 2032 can be further fastened to the second plate 2022 by bolts. The connecting column 2032 described here is an embodiment of the connection between the first plate 2021 and the second plate 2022. Those skilled in the art can conceive of other connection methods to connect the two together, which are all within the scope of protection of the present invention.

[0045] Further, according to a preferred embodiment of the present invention, Figure 2 As shown, the fixing frame assembly 202 also includes a third plate (also referred to as a "front fixing plate") 2023 having a central opening. The central opening can be larger, thereby allowing the floating slide assembly 201 to float in one or more directions. The third plate 2023 is connected to the first plate 2021 and / or the second plate 2022. Figure 3 and Figure 4 The possible connection modes between the floating slide plate and the first plate of the fixing frame assembly and between the first plate, the second plate and the third plate of the fixing frame assembly in the floating mechanism of the charging head of the present invention are described.

[0046] Figure 4 FIG. 2 shows an example of connection between the first plate 2021, the second plate 2022 and the third plate 2023 of the fixing frame assembly 202 in the charging head floating mechanism according to an embodiment of the present invention. Figure 4 In the embodiment shown, the third plate 2023 is connected to the first plate 2021 (second plate 2022) through a threaded rod 2031 and a connecting column 2032, and an elastic member (such as a spring or an elastic sleeve) 2033 is provided on the threaded rod 2031 to adjust the height of the third plate 2023. Figure 4As shown, the threaded rod 2031 passes through the hole on the upper edge of the third plate 2023, the hole of the elastic member 2033, and the hole on the connecting column 2032. The lower edge of the third plate 2023 also has a threaded hole, and the threaded rod 2031 is, for example, threadedly engaged with the threaded hole. The diameter of the threaded rod 2031 is smaller than the diameter of the hole on the upper edge of the third plate 2023, the hole of the elastic member 2033, and the hole on the connecting column 2032, so the connecting column 2032 (together with the first plate 2021 and the second plate 2022) can move up and down along the threaded rod 2031, thereby adjusting the height of the first plate 2021 and the second plate 2022 relative to the ground. Figure 4 2 shows that a group of threaded rods 2031 and elastic members 2033 are respectively provided on both sides of the third plate 2023, but more or fewer groups of threaded rods 2031 and elastic members 2033 may also be provided.

[0047] Also according to Figure 4 In the embodiment shown, the threaded rod 2034 passes through the hole on the upper edge of the second plate 2022 and through the hole in the middle of the upper edge of the third plate 2023, and is fixed by a butterfly nut and a washer. In this way, the first plate 2021 and the second plate 2022 are adjustably positioned relative to the third plate 2023 by means of the threaded rod 2031 and the threaded rod 2034. Specifically, the first plate 2021 and the second plate 2022 are Figure 4 The height in the vertical direction is adjustable. For example, when the assembly is completed, relative to the third plate 2023, the first plate 2021 and the second plate 2022 are "suspended" on the upper edge of the third plate 2023 by the threaded column 2034 and the butterfly nut. When the height of the first plate 2021 and the second plate 2022 needs to be raised, the butterfly nut can be tightened to pull the threaded column 2034 upward, thereby driving the first plate 2021 and the second plate 2022 to move upward. When the height of the first plate 2021 and the second plate 2022 needs to be lowered, the butterfly nut can be loosened to cause the threaded column 2034 to move downward, thereby driving the first plate 2021 and the second plate 2022 to move downward. The threaded rod 2031 can movably pass through the connecting column 2032, thereby also allowing such adjustment. The elastic member 2033 can ensure that after the height is adjusted, the first plate 2021 and the second plate 2022 are kept stable by the elastic force of the elastic member 2033.

[0048] Through the above structure, the floating structure of the present invention can be flexibly applied to different warehouses and charging equipment. For example, the charging height of the AGV in warehouse 1 is 180mm, so by adjusting Figure 4 The butterfly nut in the middle can set the height of the first plate 2021 and the second plate 2022 to 180 mm; the charging height of the AGV in warehouse 2 is 220 mm, so raise the height of the first plate 2021 and the second plate 2022 to close to 220 mm.

[0049] According to other embodiments of the present invention, the first plate, the second plate and the third plate can also be connected by other mechanical means. Further, according to a preferred embodiment of the present invention, Figure 4 and Figure 5B As shown, the universal balls X of the first plate 2021 correspond to the universal balls Y of the second plate 2022 respectively, and the central axes of each pair of corresponding universal balls X and Y are on the same straight line.

[0050] Based on the configuration of the charging head floating mechanism of the present invention, the floating slide and the universal ball in the fixing frame assembly form a plane sliding pair, thereby enabling arbitrary sliding in the plane and enabling the charging head to float at any angle in all directions of 360°, thereby achieving sufficient and precise alignment between the charging head and the charging port. Figure 5A That is, it shows the structural diagram of the charging head floating mechanism after the charging head is assembled. Figure 5B Shows along Figure 5A A cross-sectional view of the floating mechanism of the charging head of the present invention along the middle AA line. Since the elastic member pulls the floating slide toward the first plate (i.e., the "rear fixed plate"), the floating mechanism of the charging head of the present invention achieves the reset of the vertical surface inward to the center position. Therefore, when there is a deviation in the alignment between the charging head and the charging port, the side of the charging port will generate a lateral force to drive the floating slide to move relative to the first plate, thereby achieving precise alignment and insertion for power supply; when charging is completed, the charging head is separated from the charging port, and the charging head will automatically reset to the original position (i.e., the "theoretical center position") under the action of the elastic member.

[0051] The present invention also provides a charging head floating mechanism, comprising: a first plate 2021, a second plate 2022 and a third plate 2023. The third plate 2023 can be configured as a shell or a part of a shell of a charging pile, for example. The second plate 2022 is fixedly connected to the first plate, and the third plate 2023 is connected to the first plate 2021 and the second plate 2022, located on the opposite side of the second plate from the first plate, with a middle opening, and the height of the first plate and the second plate relative to the third plate is adjustable. The middle opening on the third plate 2023 is, for example, larger, so as to adapt to different charging heights. For example, when it is suitable for a warehouse with a charging height of about 220 mm, the height of the first plate and the second plate relative to the third plate (that is, the height relative to the ground) is adjusted to 220 mm. When it is suitable for a warehouse with a charging height of about 180 mm, the height of the first plate and the second plate relative to the third plate (that is, the height relative to the ground) is adjusted to 220 mm.

[0052] According to a second aspect of the present invention, a charging pile is provided. Figure 6A charging pile 400 according to an embodiment of the present invention is shown, which includes a charging box 401 , a charging head floating mechanism 402 as specifically described above, and a charging head 403 .

[0053] According to a third aspect of the present invention, an AGV vehicle is provided. Fig. 7A FIG. 5 shows an AGV trolley 500 according to an embodiment of the present invention, which is automatically charged by the charging pile 400 as described above. According to a preferred embodiment of the present invention, the AGV trolley 500 includes a trumpet-shaped charging port (such as Figure 7B ), thereby providing better lateral decomposition force when aligning and charging with the charging head 403 of the charging pile 400 to drive the floating skateboard to move relative to the first board.

[0054] According to a fourth aspect of the present invention, there is provided a method for charging an automatic guided vehicle using the charging pile as described above.

[0055] The above describes an exemplary embodiment of the charging head floating mechanism of the present invention, wherein the charging head floating mechanism is provided on the charging pile. It should be noted that there may be a situation where the AGV is equipped with a charging head and the charging pile is equipped with a charging port, so the charging head floating mechanism can also be provided on the AGV to achieve precise alignment of the charging head and the charging port.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0057] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "towards" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of various changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A charging head floating mechanism, characterized in that: include: A floating skateboard assembly, comprising a floating skateboard and a charging head connector mounted on the floating skateboard; and Mounting bracket assembly, including: First board; a second plate fixedly connected to the first plate, wherein the floating slide plate is located between the first plate and the second plate and is movable relative to the first plate and the second plate; and a third plate connected to the first plate and having a middle opening, through which the floating slide assembly passes; the heights of the first plate and the second plate relative to the third plate are adjustable, the first plate and the second plate are connected to the third plate by threaded columns and nuts, and the heights of the first plate and the second plate relative to the third plate can be adjusted by adjusting the nuts to adapt to different charging heights; wherein a first group of rolling elements is provided on a side of the first plate facing the floating slide; and a corresponding second group of rolling elements is provided on a side of the second plate facing the floating slide; The first group of rolling elements and the second group of rolling elements contact the floating slide plate respectively; The first group of rolling elements and the second group of rolling elements include universal balls, and the universal balls in the floating slide and the fixing frame assembly form a plane sliding pair, which can slide arbitrarily in the plane, so that the charging head can float at any angle in all directions of 360°; The floating slide is clamped between the universal ball on the first plate and the universal ball on the second plate, and a sliding pair is formed between the floating slide and the first plate and the second plate to avoid direct sliding friction contact between the plates, so that the entire system runs smoothly and avoids noise.

2. The charging head floating mechanism according to claim 1, characterized in that: It also includes a connecting column, which fixes the first plate and the second plate together. The connecting column has a hole, and a screw passes through the hole on the connecting column and the hole on the third plate to guide the first plate and the second plate to move relative to the third plate.

3. The charging head floating mechanism according to claim 1, characterized in that: The first plate is connected to the floating slide plate through a plurality of elastic members, so that the floating slide plate can move in a plurality of directions relative to the first plate. The elastic member is a telescopic spring, one end of each telescopic spring is connected to the floating sliding plate, and the other end is connected to the first plate.

4. The charging head floating mechanism according to claim 3, characterized in that: It comprises three elastic components. The floating slide plate is provided with connecting holes at its left and right ends and the upper end respectively. The first plate is provided with corresponding connecting holes at its left and right ends and the upper end respectively for connecting the elastic components.

5. The charging head floating mechanism according to any one of claims 1 to 4, characterized in that: The first group of rolling elements of the first plate respectively correspond to the second group of rolling elements of the second plate, and the central axes of each pair of corresponding rolling elements are on the same straight line.

6. A charging pile, characterized in that: include: The charging head floating mechanism according to any one of claims 1 to 5; and The charging head is connected to the charging head connector of the charging head floating mechanism.

7. An automatic guided vehicle, characterized in that: Automatic charging is performed by the charging pile as claimed in claim 6.

8. A method for charging an automatic guided vehicle using the charging pile as claimed in claim 6.

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