Boarding device

Abstract

The utility model provides a boarding device. The boarding device comprises a boarding frame, a boarding plate, a driving assembly and at least two tongue plates. The boarding plate is hinged to the boarding frame around the first pivot; all the tongue plates are hinged to the boarding plate around the second pivot, and all the tongue plates are located on the side, away from the first pivot, of the boarding plate in the radial direction of the first pivot; the driving assembly comprises a first driving part and at least two second driving parts, the first driving part is connected with the boarding frame, the output end of the first driving part is connected with the boarding plate, the number of the second driving parts is equal to that of the tongue plates, the second driving parts are connected with the boarding frame, and the output ends of the second driving parts are connected with the tongue plates in a one-to-one correspondence mode; wherein the first driving piece is configured to drive the boarding plate to rotate around the first pivot so as to raise or lower the height of the boarding plate, and the second driving piece is configured to drive the tongue plate connected with the second driving piece to rotate around the second pivot so as to unfold the tongue plate. According to the boarding device, the adaptability to carriages with different widths can be improved.

Description

Technical Field

[0001] This application relates to the field of logistics loading and unloading equipment technology, specifically to a vehicle loading device. Background Technology

[0002] In logistics loading and unloading operations, there is a height difference between the warehouse platform and the truck bed. Loading ramps are used to connect the warehouse platform and the truck bed to facilitate loading and unloading of goods. However, the width compatibility between loading ramps and truck beds is currently poor. If the loading ramp is wider than the truck bed, it cannot be connected. If the loading ramp is narrower than the truck bed, the gap between the loading ramp and the truck bed is too large, which can easily lead to people or goods falling. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a boarding device that improves adaptability to carriages of different widths.

[0004] The boarding device according to an embodiment of this application includes a boarding frame, a boarding plate, a drive assembly, and at least two tongue plates;

[0005] Around the first pivot, the boarding board is hinged to the boarding frame;

[0006] Around the second pivot, each tongue is hinged to the boarding board, and along the radial direction of the first pivot, each tongue is located on the side of the boarding board away from the first pivot.

[0007] The drive assembly includes a first drive member and at least two second drive members. The first drive member is connected to the boarding rack, and the output end of the first drive member is connected to the boarding plate. The number of second drive members and tongues is equal. Each second drive member is connected to the boarding rack, and the output end of each second drive member is connected to each tongue in a corresponding manner.

[0008] The first drive unit is configured to drive the boarding board to rotate around a first pivot to raise or lower the height of the boarding board, and the second drive unit is configured to drive the connected tongue plate to rotate around a second pivot to unfold the tongue plate.

[0009] The loading device according to the embodiments of this application has at least the following beneficial effects: A first driving member drives the loading platform to rotate relative to the loading rack around a first pivot, thereby adjusting the pitch angle of the loading platform relative to the horizontal plane. This allows each tongue to change its height as the loading platform moves, matching the height of the carriage. Each second driving member drives each tongue to rotate around a second pivot in a corresponding manner, enabling each tongue to unfold independently relative to the loading platform. The unfolded tongues are used to overlap the carriage. Therefore, according to the width of the carriage, the loading device of this application can adjust the number of unfolded tongues to change the sum of the widths of the unfolded tongues, achieving a match with the width of the carriage. This facilitates improved adaptability to carriages of different widths, making loading and unloading goods safer and more reliable.

[0010] According to some embodiments of this application, along the axial direction of the second pivot, the hinge positions of each tongue plate and the boarding plate are arranged sequentially, and the widths of adjacent tongue plates are different, with the width of the boarding plate being greater than the width of any tongue plate.

[0011] According to some embodiments of this application, at least two tongue plates include a first tongue plate, a second tongue plate, and a third tongue plate. The hinge positions of the first tongue plate, the second tongue plate, and the third tongue plate are arranged sequentially along the axial direction of the second pivot, and the width of the second tongue plate is greater than the width of the first tongue plate and the third tongue plate.

[0012] According to some embodiments of this application, the output end of the second drive member is hinged to the tongue plate, and the second drive member is hinged to the boarding rack. The second drive member is configured to drive the tongue plate to rotate and retract about a second pivot.

[0013] According to some embodiments of this application, the boarding device further includes a control module connected to each of the second driving components, and the control module is configured to drive the output terminals of each of the second driving components to operate independently.

[0014] According to some embodiments of this application, the control module further includes a sensor connected to the boarding board and located on the side of the boarding board away from the first pivot along the radial direction of the first pivot. The sensor is configured to detect the position switching of the tongue plate when it is extended or retracted.

[0015] According to some embodiments of this application, the first drive member is connected to the boarding plate at a first position, and the first drive member is connected to the boarding rack at a second position. In the horizontal direction, the second position is closer to the first pivot than the first position.

[0016] According to some embodiments of this application, the boarding device is further provided with a skirt structure. Along the axial direction of the first pivot, the skirt structure is connected to both sides of the boarding plate, and the skirt structure extends vertically toward the side where the boarding frame is located.

[0017] According to some embodiments of this application, the boarding rack has a limiting slot on the side facing the boarding board, and the limiting slot is configured to receive the side of the retracted tongue plate away from the second pivot.

[0018] According to some embodiments of this application, the boarding rack has a connecting portion extending toward the boarding board, a first pivot is connected to the connecting portion, and the boarding board includes a supporting wall surface configured at an angle of -10° to 10° with respect to the horizontal plane.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a side view of the boarding device according to an embodiment of this application;

[0022] Figure 2 This is a front view of the boarding device according to an embodiment of this application;

[0023] Figure 3 This is a bottom view of the boarding device according to an embodiment of this application;

[0024] Figure 4 This is a top view of the boarding device according to an embodiment of this application;

[0025] Figure 5 This is a partial control principle diagram of the control module in an embodiment of this application.

[0026] Reference numerals: boarding frame 100, first pivot 110, limiting slot 120, connecting part 130, first connecting side 140;

[0027] Boarding platform 200, second pivot 210, second connecting side 220, support body 230, mounting part 240, connecting through hole 241, support wall 250;

[0028] Tongue plate 300, first tongue plate 310, second tongue plate 320, third tongue plate 330, overlapping side 340, bearing side 350;

[0029] Drive component 400, first drive element 410, second drive element 420;

[0030] Skirt structure 500, skirt 510, guide protrusion 511, guide groove 512. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0033] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0035] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The embodiments of this application are described below with reference to the accompanying drawings:

[0037] refer to Figure 1 and Figure 2 According to an embodiment of this application, a boarding device is arranged on a platform. The boarding device includes a boarding frame 100, a boarding plate 200, a drive assembly 400, and at least two tongue plates 300. The boarding plate 200 is hinged to the boarding frame 100 about a first pivot 110, and each tongue plate 300 is hinged to the boarding plate 200 about a second pivot 210. Along the radial direction of the first pivot 110, each tongue plate 300 is located on the side of the boarding plate 200 opposite to the first pivot 110, and the second pivot 210 is located on the side of the boarding plate 200 opposite to the first pivot 110. The drive assembly 400 includes a first drive member 410 and at least two second drive members 420. The first drive member 410 is connected to the boarding rack 100, and the output end of the first drive member 410 is connected to the boarding plate 200. The number of second drive members 420 and tongue plates 300 are equal. Each second drive member 420 is connected to the boarding rack 100, and the output end of each second drive member 420 is connected to each tongue plate 300 in a one-to-one correspondence.

[0038] The first driving component 410 is configured to drive the loading platform 200 to rotate around the first pivot 110, thereby raising or lowering the height of the loading platform (i.e., adjusting the pitch angle of the loading platform 200 relative to the horizontal plane), thus raising or lowering the height of each of the tongues to match carriages of different heights. The second driving component 420 is configured to drive the connected tongues 300 to rotate around the second pivot 210, so that each tongue 300 can be independently unfolded relative to the loading platform 200, and the unfolded tongues 300 can overlap with the carriage. Therefore, by adjusting the number of unfolded tongues 300, the total width of the overlapping carriage tongues 300 can be adjusted, thereby adapting to carriages of different widths. This improves the adaptability to carriage widths and reduces the risk of goods slipping during loading and unloading due to width mismatch, making cargo loading and unloading safer.

[0039] It should be noted that the tongue plate 300 has two positions: extended and retracted. The tongue plate 300 includes an overlapping side 340 and a supporting side 350. The overlapping side 340 is used to overlap the carriage. When the tongue plate 300 is extended, it can be understood that the angle between the supporting side 350 and the boarding plate 200 is less than 30°. When the tongue plate 300 is retracted, it can be understood that the angle between the supporting side 350 and the boarding plate 200 is greater than 80°. The boundary between the two states is not limited to the above angles. The goal is to ensure that when the tongue plate 300 is extended, it can overlap with the carriage, and when the tongue plate 300 is retracted, it can avoid the carriage.

[0040] refer to Figure 1 and Figure 2 Specifically, the first pivot 110 and the second pivot 210 are arranged parallel to the horizontal direction, and the first pivot 110 and the second pivot 210 are not coaxial. The first drive member 410 and the second drive member 420 can be hydraulic cylinders, and their output ends are piston rods. The boarding plate 200 is hinged to the output end of the first drive member 410, so that the output end of the first drive member 410 can both support the boarding plate 200 and rotate relative to the boarding plate 200. Thus, driven by the first drive member 410, the boarding plate 200 can rotate relative to the boarding frame 100 around the first pivot 110. Furthermore, along the radial direction of the first pivot 110, the side of the boarding plate 200 away from the first pivot 110 changes in height. The tongue plate 300 adjusts its height relative to the ground as the boarding plate 200 rotates, ensuring that the height of the tongue plate 300 is adapted to the height of the carriage.

[0041] Each tongue 300 is hinged to the output end of the second drive member 420. On the one hand, each second drive member 420 can independently drive each tongue 300 to rotate around the second pivot 210. On the other hand, when each tongue 300 rotates, the second drive member 420 can rotate relative to the tongue 300 to ensure that each tongue 300 can rotate and unfold relative to the loading platform 200 around the second pivot 210. By adjusting the number of unfolded tongues 300, the sum of the widths of the unfolded tongues 300 along the axial direction of the second pivot 210 can be made closer to the width of the carriage, thus adapting to carriages of different widths, making cargo loading and unloading safer, and the width adaptation of the tongues 300 also helps to improve cargo loading and unloading efficiency.

[0042] In addition, the second driving member 420 is not limited to a hydraulic cylinder, but can also be other driving structures that enable the tongue plate 300 to rotate around the second pivot 210. When the second driving member 420 loses its drive, the tongue plate 300 can be retracted by rotating around the second pivot 210 under the influence of gravity.

[0043] It should be noted that, along the axial direction of the second pivot 210, the sum of the widths of the unfolded tongues 300 should not exceed the width of the carriage to ensure the overlap between the tongues 300 and the carriage. By adjusting the unfolding or retracting of multiple tongues 300, it is beneficial to reduce the width gap between the unfolded tongues 300 and the carriage, ensuring the overlap between the tongues 300 and the carriage while improving the safety of cargo loading and unloading. The width of the tongues 300 can be set according to the common width dimensions of carriages. For example, the width of a carriage is generally 2000mm, 2500mm, or 3000mm. The sum of the widths of the unfolded tongues 300 should not exceed the width of the carriage to facilitate better overlap.

[0044] In addition, since the carriage is loaded with cargo for a long time, it is difficult to maintain a consistent flatness of the carriage floor. This boarding device uses multiple tongue plates 300 to fit against the carriage floor, which also helps to improve the fit between the tongue plates 300 and the carriage, making the connection between the boarding device and the carriage more stable.

[0045] refer to Figure 1 and Figure 2 In other embodiments, one end of the first drive member 410 is fixedly connected to the boarding rack 100, and the output end of the first drive member 410 is movably connected to the boarding plate 200. When the output end of the first drive member 410 extends or shortens, the connection position between the output end of the first drive member 410 and the boarding plate 200 can be changed to ensure that the boarding plate 200 can be adjusted in pitch angle around the first pivot 110. Similarly, one end of the second drive member 420 is fixedly connected to the boarding rack 100, and the output end of the second drive member 420 is movably connected to the tongue plate 300. When the output end of the second drive member 420 extends or shortens, it can drive the tongue plate 300 to rotate around the second pivot 210, thereby unfolding the tongue plate 300.

[0046] refer to Figure 1 and Figure 2 In other embodiments, the boarding rack 100 includes a first connecting side 140 facing the boarding plate 200, and the boarding plate 200 includes a second connecting side 220 facing the boarding rack 100. The first drive member 410 and the second drive member 420 both include a main body and an output end. The main body of the first drive member 410 is hinged to the first connecting side 140, and the output end of the first drive member 410 is hinged to the second connecting side 220. The main body of the second drive member 420 is hinged to the second connecting side 220, and the output end of the second drive member 420 is hinged to the overlapping side 340 of the tongue plate 300. Thus, the drive assembly 400 is housed within the accommodating space defined by the boarding rack 100, the boarding plate 200, and each tongue plate 300, making the overall structure of the boarding device more compact.

[0047] It should be noted that the accommodating space is a semi-open space. As the boarding plate 200 rotates relative to the boarding frame 100 around the first pivot 110, and the tongue plate 300 rotates relative to the boarding plate 200 around the second pivot 210, the size of the accommodating space will change.

[0048] refer to Figure 1 and Figure 2 In some embodiments, along the axial direction of the second pivot 210, the hinge positions of each tongue 300 and the loading platform 200 are arranged sequentially, and the widths of adjacent tongues 300 are different, with the width of the loading platform 200 being greater than the width of any tongue 300. By setting tongues 300 of different widths, the width of a single tongue 300 can be designed to be a common size for the width of a carriage. For example, the width of a single tongue 300 can be set to 2000mm, 2500mm, or 3000mm. Thus, on the one hand, each tongue 300 can be adapted to more carriages of different widths through combinations of widths; on the other hand, when a single tongue 300 overlaps with a carriage of a common width, the width of the loading platform 200 is greater than the width of the carriage. This can improve the efficiency of loading and unloading goods and further ensure the safety of personnel and goods during the loading and unloading process.

[0049] refer to Figure 1 and Figure 2In some embodiments, at least two tongue plates 300 include a first tongue plate 310, a second tongue plate 320, and a third tongue plate 330. Along the axial direction of the second pivot 210, the hinged positions of the first tongue plate 310, the second tongue plate 320, and the third tongue plate 330 are arranged sequentially, and the width of the second tongue plate 320 is greater than the widths of the first tongue plate 310 and the third tongue plate 330. Along the axial direction of the second pivot 210, the loading platform 200 has a width dimension. The cargo loading and unloading passage area is mainly concentrated in the relatively central part of the loading platform 200. Arranging the wider tongue plates 300 in the relatively central area can effectively distribute the load, reduce the swaying of the loading platform 200 due to concentrated force, and improve the structural stability and reliability of the loading device.

[0050] Specifically, around the second pivot 210, the first tongue plate 310, the second tongue plate 320, and the third tongue plate 330 are all hinged to the boarding platform 200, and the hinge positions of the three to the boarding platform 200 are arranged sequentially along the axial direction of the second pivot 210. The width of the second tongue plate 320 can be 2000mm, and the widths of the first tongue plate 310 and the second tongue plate 320 can be 490mm. Thus, the first tongue plate 310, the second tongue plate 320, and the third tongue plate 330 can be combined to form three unfolded width dimensions of 2000mm, 2490mm, and 2980mm to accommodate three different widths of carriages. Among them, the width dimension of the second tongue plate 320 can match the width of commonly used carriages, so that after the second tongue plate 320 overlaps with the carriage, the two sides of the boarding platform 200 can extend beyond the width of the carriage along the axial direction of the second pivot 210 to retain a safety margin for boarding, thereby further improving the safety of the boarding device.

[0051] It should be noted that the widths of the first tongue plate 310, the second tongue plate 320, and the third tongue plate 330 are not limited to the widths mentioned above; the specific widths can be set according to requirements. Furthermore, the number of tongue plates 300 is not limited to the number mentioned above. The first tongue plate 310, the second tongue plate 320, and the third tongue plate 330 are sequentially hinged to the boarding platform 200; this should be understood as the hinge positions being arranged sequentially along the axial direction of the second pivot 210.

[0052] refer to Figures 1 to 3 In some embodiments, the output end of the second drive member 420 is hinged to the tongue plate 300 and the second drive member 420 is hinged to the boarding rack 100. The second drive member 420 is configured to drive the tongue plate 300 to rotate and retract around the second pivot 210. After the tongue plate 300 is retracted, the output end of the second drive member 420 can also restrict the rotation of the tongue plate 300 to maintain the retracted state of the tongue plate 300, thereby effectively avoiding interference with the overlap between the unfolded tongue plate 300 and the carriage.

[0053] refer to Figures 1 to 3In some embodiments, along the axial direction of the second pivot 210, the width of the boarding plate 200 is greater than the sum of the widths of the tongues 300, so that when the tongues 300 are unfolded and overlap with the carriage, at least one edge of the boarding plate 200 can extend beyond the side wall of the carriage, thereby retaining leeway for supporting the loading and unloading of goods and improving the safety of the boarding device.

[0054] For example, at least two tongues 300 include a first tongue 310, a second tongue 320, and a third tongue 330. Along the axial direction of the second pivot 210, the first tongue 310, the second tongue 320, and the third tongue 330 are sequentially hinged to the loading platform 200. That is, the first tongue 310 and the third tongue 330 are respectively arranged on the outermost sides of the opposite sides of each tongue 300. Along the axial direction of the second pivot 210, one side of the loading platform 200 extends beyond the first tongue 310, and the other side of the loading platform 200 extends beyond the third tongue 330. Thus, when the tongues 300 overlap with the carriage, the loading platform 200 can retain a safety margin for support in the width direction, further ensuring the safety of loading and unloading goods.

[0055] refer to Figures 1 to 3 In some embodiments, the boarding device further includes a control module connected to each of the second drive members 420. The control module is configured to drive each of the second drive members 420 to operate independently, thereby enabling each tongue 300 to rotate independently around the second pivot 210 to unfold or retract, which is beneficial to improving the adjustment efficiency of the tongue 300. For example, the control module is configured to have a first mode, a second mode, a third mode, and a fourth mode. In the first mode, it can simultaneously control the second drive member 420 connecting the first tongue plate 310 and the second tongue plate 320, so that the first tongue plate 310 and the second tongue plate 320 can rotate synchronously around the second pivot 210. In the second mode, it can simultaneously control the second drive member 420 connecting the second tongue plate 320, so that the second tongue plate 320 can rotate around the second pivot 210. In the third mode, it can simultaneously control the second drive member 420 connecting the second tongue plate 320 and the third tongue plate 330, so that the second tongue plate 320 and the third tongue plate 330 can rotate synchronously around the second pivot 210. In the fourth mode, it can simultaneously control the second drive member 420 connecting the first tongue plate 310, the second tongue plate 320, and the third tongue plate 330, so that the first tongue plate 310, the second tongue plate 320, and the third tongue plate 330 can rotate synchronously around the second pivot 210. This enables faster and more flexible control of each tongue plate 300, improving the efficiency of the boarding device connecting to the carriage.

[0056] Specifically, the control module includes a programmable logic controller (PLC), a motor, an oil pump, a solenoid valve, a relief valve, and a filter. All the aforementioned control modes are integrated into the PLC. The PLC regulates the current flow of the motor and solenoid valve to switch between modes. The second drive component 420 is a hydraulic cylinder, connected to the solenoid valve via a pipe. The second drive component 420 includes a rodless chamber and a rod chamber. Taking the control of one of its tongue plates 300 to rotate around the second pivot 210 as an example, refer to... Figures 3 to 5 When the motor is energized, it drives the oil pump to draw hydraulic oil. The hydraulic oil is filtered through the filter and then flows to the solenoid valve. When the solenoid valve is energized, the hydraulic oil flows through the solenoid valve to the rodless chamber of the second drive component 420, pushing the piston rod to move. At the same time, the hydraulic oil in the rod chamber flows back through the return port of the solenoid valve, thereby causing the tongue plate 300 to rotate around the second pivot 210 and unfold.

[0057] It should be noted that the control module is a core control component widely used in the field of electrical control. For example, a common programmable logic controller (PLC) typically stores instructions for performing logical judgments, process control, timing settings, counting operations, and numerical calculations. Through the input and output of digital or analog signals, the control module can regulate the operating status or production process of various electrical units. In this embodiment, the control module controls the coordinated operation of the motor and various solenoid valves. This falls within the scope of what a person skilled in the art can achieve based on the existing functions of a control module, and the specific control principles and methods will not be described in detail here.

[0058] refer to Figures 1 to 3 In some embodiments, the control module further includes a sensor connected to the boarding board 200. The sensor is located on the side of the boarding board 200 away from the first pivot 110 along the radial direction of the first pivot 110, and is arranged facing the side where the tongue plate 300 is located. The sensor is configured to detect the position switching of the tongue plate 300 between its extended and retracted positions. For example, the sensor can be an infrared sensor, an ultrasonic sensor, a laser sensor, or other sensors capable of position detection. Taking an infrared sensor as an example, when the tongue plate 300 is in the retracted position, the infrared light emitted by the infrared sensor can directly illuminate the surface of the tongue plate 300 and form a reflection. The infrared sensor can determine that the tongue plate 300 is in the retracted position by receiving the intensity change of the reflected light. When the tongue plate 300 is in the extended position, the position of the tongue plate 300 is outside the illumination range of the infrared sensor, and the intensity of the reflected signal is significantly weakened or even disappears. The infrared sensor can determine that the tongue plate 300 has reached the extended position based on this. Therefore, the boarding device of this application can more accurately determine whether the tongue plate 300 has reached the unfolded or retracted position, and stop the action after the tongue plate 300 has unfolded or retracted, making the adjustment of the tongue plate 300 more convenient.

[0059] Specifically, there can be multiple sensors. Along the radial direction of the first pivot 110, each sensor is located on the side of the boarding plate 200 away from the first pivot 110, and each sensor is arranged facing each tongue plate 300 in a corresponding manner. Each sensor can detect the opening and closing of each tongue plate 300 to ensure that the tongue plate 300 is opened or closed in place.

[0060] refer to Figures 1 to 3 In other embodiments, the boarding board 200 includes a support body 230 and a mounting portion 240. The support body 230 is connected to a first pivot 110. Along the radial direction of the first pivot 110, the mounting portion 240 is connected to the side of the support body 230 opposite to the first pivot 110. The support body 230 and the mounting portion 240 are capable of rotating together about the first pivot 110 relative to the boarding frame 100. The mounting portion 240 and the support body 230 have an included angle. For example, along the thickness direction of the support body 230, the mounting portion 240 includes at least one plane perpendicular to the side of the support body 230 facing the mounting portion 240 (i.e., the second connecting side 220). Each tongue 300 is connected to the mounting portion 240 via a second pivot 210, enabling the tongue 300 to unfold and retract. On the one hand, the mounting section 240 provides a more convenient mounting position for each tongue 300, making the transition between the bearing side 350 and the side of the boarding plate 200 away from the boarding frame 100 smoother when each tongue 300 is unfolded. On the other hand, the mounting section 240 can limit the folding of the tongues 300, ensuring that each tongue 300 is folded more neatly.

[0061] refer to Figures 1 to 3 In some other embodiments, the mounting part 240 is provided with a connecting through hole 241, the output end of the second driving member 420 passes through the connecting through hole 241 and extends from one end of the connecting through hole 241 to the opposite end. Furthermore, the output end of the second driving member 420 is hinged to the tongue plate 300, and the connecting through hole 241 is used to avoid the output end of the second driving member 420, making the structure of the boarding device more compact.

[0062] Specifically, there can be multiple connecting through holes. The number of tongue plates 300, second driving members 420 and connecting through holes are equal in pairs, so that the output ends of the second driving members 420 can be inserted into each connecting through hole in a one-to-one correspondence, and the output ends of each second driving member 420 are connected to the tongue plates 300 in a one-to-one correspondence, so as to drive each tongue plate 300 to rotate around the second pivot 210 independently.

[0063] refer to Figures 1 to 3In some embodiments, the first drive member 410 is connected to the boarding platform 200 at a first position, and the first drive member 410 is connected to the boarding rack 100 at a second position. In the horizontal direction, the second position is closer to the first pivot than the first position. This allows the hinge position between the first drive member 410 and the boarding platform 200 to be closer to the first pivot 110 without changing the upper limit of the length of the first drive member 410, which is beneficial for increasing the angle adjustment range of the boarding platform 200.

[0064] refer to Figure 1 Specifically, in the horizontal direction (left-right direction), the left side of the boarding platform 200 is connected to the first pivot 110, and the right side of the boarding platform 200 is connected to the second pivot 210. The lower left end of the first drive member 410 is hinged to the boarding frame 100 (i.e., the second position), and the upper right end of the first drive member 410 is hinged to the boarding platform 200 (i.e., the first position). The first drive member 410 extends from the lower left to the upper right, so that the distance between the second position and the first pivot 110 is shorter in the horizontal direction. Based on this, the output end of the first drive member 410 and the supporting force on the boarding platform 200 can be decomposed into a first component force perpendicular to the boarding platform 200 and a second component force toward the tongue plate 300. The force applied to the boarding platform 200 for loading and unloading goods can be decomposed into a third component force opposite to the first component force and a fourth component force toward the first pivot 110. The second component force can balance the fourth component force, making the loading and unloading of goods by the boarding device more stable.

[0065] Alternatively, it can be understood that, vertically, one end of the first drive member 410 is hinged to the boarding plate 200 and projected onto the boarding frame 100 at a third position, while the first drive member 410 is hinged to the boarding plate 200 at a second position. Compared to the third position, the second position is closer to the first pivot 110. The vertical direction refers to the up-down direction. The line connecting the second position and the first pivot 110 is longer than the line connecting the third position and the first pivot 110, causing the first drive member 410 to extend from the lower left to the upper right (see reference). Figure 1 ).

[0066] It should be noted that the radial direction of the first pivot 110 includes multiple directions, and both the horizontal and vertical directions can be understood as the radial direction of the first pivot 110.

[0067] refer to Figures 1 to 3 In some embodiments, the boarding device also includes a skirt structure 500. Along the axial direction of the first pivot 110, skirt structures 500 are connected to opposite sides of the boarding plate 200, extending vertically towards the side where the boarding frame 100 is located. The skirt structure 500 is used to shield the interior of the boarding device (which can be understood as accommodating space), effectively preventing people or goods from falling into the interior of the boarding device and improving its safety.

[0068] refer to Figures 1 to 3 In other embodiments, the skirt structure 500 includes at least two skirts 510, which are stacked along the axial direction of the first pivot 110. Adjacent skirts 510 are rotatably connected, and one of the adjacent skirts 510 is provided with a guide protrusion 511 and the other with a guide groove 512. The guide protrusion 511 is located in the guide groove 512, and the guide groove 512 is configured to extend along an arc trajectory, the center of which is the rotation center of the adjacent skirts 510.

[0069] When the boarding platform 200 rotates and rises around the first pivot 110, the adjacent skirt panels 510 rotate relative to each other. At the same time, the guide protrusion 511 slides along an arc trajectory within the guide groove 512, causing the skirt structure 500 to unfold downwards. This expands the coverage area of ​​the skirt structure 500 as the boarding platform 200 rises, effectively covering the gap between the boarding platform 200 and the boarding frame 100, preventing people or goods from falling.

[0070] Conversely, when the boarding platform 200 rotates and descends around the first pivot 110, the skirt 510 can abut against the boarding frame 100, and adjacent skirts 510 rotate in opposite directions, achieving a compact retraction of the skirt structure 500. At this time, the covering area of ​​the skirt 510 decreases adaptively as the boarding platform 200 descends, ensuring no interference during storage.

[0071] refer to Figures 1 to 3 In some embodiments, the boarding rack 100 is provided with a limiting slot 120 on the side facing the boarding plate 200. The limiting slot 120 is configured to receive the side of the retracted tongue plate 300 away from the second pivot 210. The limiting slot 120 can restrict the rotation of the tongue plate 300. At this time, the boarding plate 200 is approximately parallel to the horizontal plane, which is beneficial to forming a stable support platform.

[0072] refer to Figures 1 to 4 In some embodiments, the boarding rack 100 is provided with a connecting portion 130 extending toward the boarding platform 200, and a first pivot 110 is connected to the connecting portion 130. The boarding platform 200 includes a supporting wall 250, which is configured to form an angle of -10° to 10° with the horizontal plane, so that the boarding device of this application can simultaneously adapt to both high and low carriages, which is beneficial to improving the height adaptability of the boarding device.

[0073] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A boarding device, characterized in that, include: vehicle mounting rack; A boarding board, about a first pivot, is hinged to the boarding frame; At least two tongues are hinged to the boarding board about a second pivot, and each tongue is located on the side of the boarding board away from the first pivot along the radial direction of the first pivot. The drive assembly includes a first drive member and at least two second drive members. The first drive member is connected to the boarding rack, and the output end of the first drive member is connected to the boarding plate. The number of second drive members is equal to the number of tongues. Each second drive member is connected to the boarding rack, and the output end of each second drive member is connected to each tongue in a corresponding manner. The first drive member is configured to drive the boarding board to rotate about the first pivot to raise or lower the height of the boarding board, and the second drive member is configured to drive the connected tongue plate to rotate about the second pivot to unfold the tongue plate.

2. The boarding device according to claim 1, characterized in that, Along the axial direction of the second pivot, the hinge positions of each tongue plate and the boarding plate are arranged sequentially, and the widths of adjacent tongue plates are different, with the width of the boarding plate being greater than the width of any tongue plate.

3. The boarding device according to claim 2, characterized in that, The at least two tongue plates include a first tongue plate, a second tongue plate, and a third tongue plate. The hinge positions of the first tongue plate, the second tongue plate, and the third tongue plate are arranged sequentially along the axial direction of the second pivot, and the width of the second tongue plate is greater than the width of the first tongue plate and the third tongue plate.

4. The boarding device according to claim 1, characterized in that, The output end of the second drive member is hinged to the tongue plate, and the second drive member is hinged to the boarding rack. The second drive member is configured to drive the tongue plate to rotate and retract around the second pivot.

5. The boarding device according to claim 1, characterized in that, The boarding device also includes a control module, which is connected to each of the second driving components. The control module is configured to drive the output terminals of each of the second driving components to operate independently.

6. The boarding device according to claim 5, characterized in that, The control module also includes a sensor connected to the boarding board and located radially from the first pivot on the side of the boarding board opposite to the first pivot. The sensor is configured to detect the switching of the tongue's extended and retracted positions.

7. The boarding device according to claim 1, characterized in that, The first drive unit is connected to the boarding board at a first position, and the first drive unit is connected to the boarding rack at a second position. In the horizontal direction, the second position is closer to the first pivot than the first position.

8. The boarding device according to claim 1, characterized in that, The boarding device is also provided with a skirt structure. Along the axial direction of the first pivot, the skirt structure is connected to both opposite sides of the boarding plate, and the skirt structure extends vertically toward the side where the boarding frame is located.

9. The boarding device according to claim 1, characterized in that, The boarding rack has a limiting slot on the side facing the boarding plate, and the limiting slot is configured to receive the side of the tongue plate away from the second pivot after it is folded up.

10. The boarding device according to claim 1, characterized in that, The boarding rack has a connecting portion extending toward the boarding board, and the first pivot is connected to the connecting portion. The boarding board includes a supporting wall, which is configured to form an angle of -10° to 10° with the horizontal plane.

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