Lifting tailgate

Abstract

The application discloses a lifting tail plate and belongs to the technical field of vehicle tail plates, comprising a tail plate body and an adjusting table; the adjusting table is arranged on the tail plate body and comprises a support, a rotating mechanism, a lifting mechanism and a supporting plate; the support is installed on the tail plate body; the rotating mechanism comprises a rotating seat and a driving assembly, and the rotating seat is installed on the support; the lifting mechanism is installed on the rotating seat, and a power output end of the lifting mechanism is connected with the supporting plate. The adjusting table can adjust the orientation and position of goods on the tail plate body, manual adjustment of the goods by workers is not needed to adapt to the placing space in the carriage, the loading and unloading operation process is simplified, the time and labor are saved, the labor intensity of workers is effectively reduced, the risk of collision and damage of the goods in the manual carrying and adjusting process is reduced, the safety hidden danger in the operation of the workers is avoided, and the loading and unloading efficiency and operation safety of the goods are improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle tailgate technology, and in particular to a lifting tailgate. Background Technology

[0002] In the logistics and transportation industry, lifting tailgates are an important auxiliary loading and unloading equipment for logistics trucks. They are widely used in the loading and unloading of various goods. Their core function is to drive the tailgate to achieve vertical lifting and lowering through a drive structure, replacing manual handling to complete the lifting and lowering of goods, thereby reducing the labor intensity of workers and improving the overall efficiency of logistics loading and unloading. They are an indispensable key component in the modern logistics and transportation system.

[0003] The applicant obtained the following prior art through a search. Specifically, patent CN219584034U discloses a vertical lifting tailgate for a van, including a van body, a lifting mechanism, and a lifting tailgate. The lifting tailgate is provided at the rear of the van body, and the lifting mechanism is provided at the connection between the lifting tailgate and the van body. Multiple sets of pads are equidistantly arranged on the upper surface of the lifting tailgate. Three sets of connecting seats are provided at the front and rear edges of the upper surface of the lifting tailgate. A protective railing is provided on the upper side of the connecting seat. A connecting rod is provided at the connection between the protective railing and the connecting seat. Support pads are provided at the four corners of the upper surface of the lifting tailgate. This utility model can increase the friction of the lifting tailgate surface by setting multiple sets of pads, so as to keep it stable when carrying goods. At the same time, the two sets of protective railings can protect the goods from the left and right sides, preventing the goods from being vibrated and slipping during the lifting process, thus improving the safety of loading and unloading goods.

[0004] As can be seen from the patent above, although this vertical lifting tailgate for vans can increase the friction of the tailgate surface through multiple sets of pads to keep it stable when carrying goods, and the two sets of protective railings can protect the goods from the left and right sides to prevent them from shifting and slipping due to vibration during lifting, thus improving the safety of loading and unloading, in actual use, because the tailgate can only be adjusted vertically, it is difficult to adjust the orientation and position of the goods after they are placed on the tailgate. The internal space of the logistics truck is limited, and different goods have different placement requirements. To ensure the utilization of the internal space, workers usually need to manually adjust the orientation or position of the goods to adapt to the overall spatial layout during loading and unloading. However, manual adjustment is not only cumbersome, time-consuming, and labor-intensive, increasing the labor intensity of workers, but also prolonging loading and unloading time, reducing overall logistics efficiency. Furthermore, improper operation during the handling and adjustment of goods can easily lead to collision damage or pose safety hazards to personnel. Utility Model Content

[0005] The main purpose of this utility model is to overcome the defects of the existing technology and provide a lifting tail plate that can flexibly adjust the orientation and position of goods, simplify loading and unloading operations, save time and labor, reduce the labor intensity of workers, improve loading and unloading efficiency, and reduce damage to goods and safety hazards.

[0006] To achieve the above objectives, this utility model provides a lifting tailgate, including a tailgate body and an adjustment platform; the adjustment platform is disposed on the tailgate body, and the adjustment platform includes a support, a rotating mechanism, a lifting mechanism, and a support plate; the support is detachably installed on the tailgate body, the rotating mechanism includes a rotating seat and a drive assembly, the rotating seat is rotatably installed on the support through the drive assembly; the lifting mechanism is detachably installed on the rotating seat, and the power output end of the lifting mechanism is connected to the support plate and used to drive the support plate to move up and down relative to the tailgate body.

[0007] Preferably, the drive assembly includes a first drive member, a gear, and a transmission seat. The first drive member is disposed on the support and is connected to the gear in a transmission manner. The transmission seat is rotatably mounted on the support and detachably connected to the rotating seat. The outer wall of the transmission seat has teeth that mesh with the gear along its circumference.

[0008] Preferably, the drive assembly further includes a rotating shaft, a worm gear, and a worm wheel. The power output end of the first drive member is detachably connected to the worm gear, the worm wheel is disposed at one end of the rotating shaft, and the gear is disposed at the other end of the rotating shaft.

[0009] Preferably, the support includes a hollow support cylinder, the rotating seat extends into the support cylinder and rotates in contact with the support cylinder, and the bottom surface of the rotating seat has a groove for installing the lifting mechanism, and the bottom of the groove has a through hole for the power output end of the lifting mechanism to pass through, so that the lifting mechanism can be detachably connected to the support plate.

[0010] Preferably, the end of the support cylinder away from the tray is detachably mounted with a base plate for covering the lifting mechanism.

[0011] Preferably, a limiting groove is formed on the top surface of the rotating seat, an annular boss is formed on the bottom surface of the support plate to engage with the limiting groove, and a buffer pad is provided at the bottom of the limiting groove.

[0012] Preferably, a positioning groove for accommodating the rotating seat is provided on the top surface of the support, and an annular groove is provided on the bottom of the positioning groove along its circumference. A plurality of balls are evenly and spaced apart on the side of the rotating seat facing the support, and the plurality of balls are respectively embedded in the annular groove.

[0013] Beneficial effects: This utility model discloses a lifting tailgate that, through the coordinated action of a rotating mechanism and a lifting mechanism, can adjust the orientation and position of goods above the tailgate body. This eliminates the need for manual adjustment of goods by staff to fit the internal space of the vehicle, thereby improving the space utilization of the vehicle. It not only simplifies the loading and unloading process, achieving time and labor savings, but also effectively reduces the labor intensity of staff and the risk of collision damage to goods that may occur during manual handling and adjustment. At the same time, it avoids safety hazards during operation and improves the efficiency and safety of loading and unloading. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of a lifting tailgate from a first-view perspective according to an embodiment of the present invention; Figure 2 This is a structural schematic diagram of a lifting tailgate according to an embodiment of the present invention from a second perspective; Figure 3 This is a schematic diagram of the structure of a lifting tailgate from a third-person perspective according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the adjusting platform in a lifting tailgate according to an embodiment of the present invention from a first-view perspective; Figure 5 This is a schematic diagram of the adjustment platform in a lifting tailgate according to an embodiment of the present invention from a second perspective. Figure 6 This is a cross-sectional view of the adjusting platform in a lifting tailgate according to an embodiment of the present invention.

[0016] In the diagram: 1-Tailplate body; 2-Adjusting platform; 3-Support; 4-Rotating mechanism; 5-Lifting mechanism; 6-Panel; 7-Rotating seat; 8-First driving component; 9-Gear; 10-Transmission seat; 11-Shaft; 12-Worm; 13-Worm wheel; 14-Support cylinder; 15-Groove; 16-Base plate; 17-Limiting groove; 18-Annular boss; 19-Buffer pad; 20-Positioning groove; 21-Ball bearing. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of this application, it should be noted that the use of terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. These terms are used solely for the convenience of describing this application and for 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. Furthermore, the use of terms such as "first" and "second" in the description of this application is only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, the use of terms such as "horizontal" and "vertical" in the description of this application does not imply that the component is required to be absolutely horizontal or suspended, but rather that it may be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but rather that it may be slightly tilted.

[0022] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Example 1: This utility model proposes a lifting tailgate.

[0024] In one embodiment of this utility model, a lifting tailgate includes a tailgate body 1 and an adjustment platform 2; the adjustment platform 2 is disposed on the tailgate body 1, and the adjustment platform 2 includes a support 3, a rotating mechanism 4, a lifting mechanism 5, and a support plate 6; the support 3 is detachably installed on the tailgate body 1, the rotating mechanism 4 includes a rotating seat 7 and a driving assembly, the rotating seat 7 is rotatably installed on the support 3 through the driving assembly; the lifting mechanism 5 is detachably installed on the rotating seat 7, and the power output end of the lifting mechanism 5 is connected to the support plate 6 and used to drive the support plate 6 to move up and down relative to the tailgate body 1.

[0025] Specifically, such as Figures 1 to 6 As shown, in this utility model of a lifting tailgate, the tailgate body 1 serves as the basic load-bearing structure, which has the cargo-bearing function of existing lifting tailgates, thereby ensuring the stability and reliability of the overall cargo loading and unloading operation; at the same time, by setting the adjustment platform 2 on the tailgate body 1, the cargo placed on the tailgate body 1 can be adjusted in orientation and position according to the actual placement requirements and usage in the carriage, and the structural design is simple and reasonable.

[0026] Furthermore, the support 3 in the adjusting platform 2 can be detachably installed onto the tail plate body 1 by means of threaded connection, which can not only achieve a stable installation of the adjusting platform 2, but also facilitate the disassembly and maintenance of the adjusting platform 2; at the same time, by opening a through hole in the tail plate body 1, the pallet 6 can pass through the through hole and be flush with the bearing surface of the tail plate body (1), so that the pallet 6 can abut against the goods after the goods are placed on the tail plate body 1. Since the rotating seat 7 is rotatably installed on the support 3 through the drive assembly, and the lifting mechanism 5 is detachably installed on the rotating seat 7, the lifting mechanism 5 can be an electric push rod, hydraulic cylinder, etc. in the prior art, and the power output end of the lifting mechanism 5 is detachably connected to the pallet 6, so that the pallet 6 can move up and down relative to the tail plate body 1 under the action of the lifting mechanism 5. Understandably, when it is necessary to adjust the orientation or position of the goods on the tailgate body 1, the operator can operate the external control panel to make the lifting mechanism 5 drive the pallet 6 to contact the goods and continuously raise the goods relative to the tailgate body 1 by a certain distance. At the same time, the drive component drives the rotating seat 7 to rotate, thereby driving the pallet 6 and the goods to rotate synchronously with the rotating seat 7, thus realizing the adjustment of the orientation of the goods. This allows the goods to be accurately adapted to the spatial layout inside the logistics truck compartment, avoiding placement difficulties caused by space limitations, and making it flexible and convenient to use.

[0027] Compared with the prior art, the lifting tailgate of this utility model, through the coordinated action of the rotating mechanism 4 and the lifting mechanism 5, can adjust the orientation and position of the goods above the tailgate body 1, eliminating the need for staff to manually adjust the goods to fit the internal space of the carriage, thus improving the space utilization rate of the carriage. It not only simplifies the loading and unloading operation process, achieving the effect of saving time and labor, effectively reducing the labor intensity of staff, but also reduces the risk of goods collision damage that is easy to occur during manual handling and adjustment, while avoiding safety hazards during personnel operation, and improving the loading and unloading efficiency and operational safety.

[0028] It should be noted that, in actual use, the lifting mechanism 5 drives the pallet 6 to raise the cargo by a certain distance, which is not arbitrarily set. Considering both the need for stable cargo placement and the need to reduce friction, the lifting distance is preferably controlled within the range of 5mm to 20mm. This distance range ensures that the bottom of the cargo is completely separated from the surface of the tail plate body 1, preventing sliding friction between the cargo and the tail plate body 1 during rotation and adjustment, thereby preventing wear on the cargo surface or jamming during adjustment. It also ensures that the center of gravity of the cargo is always within the support range of the pallet 6, preventing tipping or safety accidents caused by excessive lifting and shifting of the cargo's center of gravity.

[0029] Furthermore, the lifting tailgate of this utility model only adjusts the orientation of goods when the tailgate body 1 is in a horizontal position. Understandably, when the tailgate body 1 is tilted due to loading and unloading needs, such as when docking with a truck bed or the ground, the goods themselves are at risk of sliding along the tilted surface. If a lifting and rotating operation is performed, it is highly likely that the goods will tip over. However, when the tailgate body 1 is in a horizontal position, the goods on the tailgate body 1 are balanced by forces, and with a low lifting height of 5mm to 20mm, the probability of goods tipping over can be minimized. This further avoids damage to goods and accidents to personnel from an operational perspective, ensuring the safety and reliability of the goods adjustment process.

[0030] In one embodiment, the drive assembly includes a first drive member 8, a gear 9, and a transmission seat 10. The first drive member 8 is disposed on the support 3 and is connected to the gear 9 in a transmission manner. The transmission seat 10 is rotatably mounted on the support 3 and is detachably connected to the rotating seat 7. The outer wall of the transmission seat 10 has teeth that mesh with the gear 9 along its circumference.

[0031] Specifically, such as Figures 3 to 6 As shown, in this embodiment, the first driving component 8 in the driving assembly is preferably a servo motor. A servo motor has the characteristics of controllable speed and stable output torque, thus adapting to the rotation adjustment needs of goods of different weights during logistics loading and unloading, avoiding goods jamming due to insufficient power or goods shifting too quickly due to excessive power. Furthermore, the first driving component 8 can be fixedly installed on the support 3 via bolts or similar connections. Its power output end is connected to the gear 9, and the gear 9 meshes with the transmission seat 10. The transmission seat 10 is detachably connected to the rotating seat 7, so that when the first driving component 8 is running, it can drive the rotating seat 7 to rotate through the gear 9 and the transmission seat 10, thereby driving the pallet 6 and the goods on the pallet 6 to rotate, thus achieving adjustment of the orientation or position of the goods. The structural design is simple and reasonable.

[0032] In one embodiment, the drive assembly further includes a rotating shaft 11, a worm gear 12, and a worm wheel 13. The power output end of the first drive member 8 is detachably connected to the worm gear 12. The worm wheel 13 is disposed at one end of the rotating shaft 11, and a gear 9 is disposed at the other end of the rotating shaft 11. Specifically, as shown... Figures 4 to 6As shown, on the one hand, the meshing of the worm 12 and the worm wheel 13 can reduce speed and increase torque, which can reduce the speed of the power output of the first drive component 8, so that the goods can rotate smoothly during the orientation adjustment process and avoid the center of gravity of the goods shifting due to excessive rotation. On the other hand, it can increase the transmission torque, so that even when carrying a certain weight of goods, the drive component can stably drive the goods to rotate without the need for manual assistance, making it convenient and reliable to use. On the other hand, the rotating shaft 11 can provide a stable power transmission carrier for the worm wheel 13 and the gear 9, ensuring the coaxiality of the worm wheel 13 and the gear 9 during the transmission process, reducing power loss and mechanical friction during the power transmission process, and extending the overall service life of the drive component. At the same time, the detachable connection between the first drive component 8 and the worm 12 facilitates the subsequent maintenance and replacement of the worm 12 or the first drive component 8, reducing maintenance costs.

[0033] In addition, the worm gear 12 and worm wheel 13 structure also have a self-locking feature. When the cargo is adjusted to the target orientation and the drive component stops working, the worm wheel 13 cannot drive the worm gear 12 in the reverse direction, thereby automatically locking the transmission position and preventing the cargo from shifting its orientation due to slight vibration of the tail plate or slight external collision. No additional locking structure is required, which simplifies the overall design structure while ensuring the accuracy of cargo orientation adjustment.

[0034] In one embodiment, the support 3 includes a hollow support cylinder 14, a rotating seat 7 extends into the support cylinder 14 and rotates in contact with the support cylinder 14, and a groove 15 for installing the lifting mechanism 5 is provided on the bottom surface of the rotating seat 7. A through hole is provided at the bottom of the groove 15 for the power output end of the lifting mechanism 5 to pass through, so that the lifting mechanism 5 and the support plate 6 can be detachably connected.

[0035] Specifically, such as Figures 3 to 6As shown, in this embodiment, the support 3 adopts a hollow support cylinder 14, and the rotating seat 7 extends into the support cylinder 14 to form a rotational contact fit. This can play a radial limiting role for the rotating seat 7, effectively preventing the rotating seat 7 from shaking due to radial offset during the rotation of the goods, ensuring that the goods are always in a stable adjustment state, and reducing the risk of the goods tipping over when adjusting the orientation. Furthermore, by installing the lifting mechanism 5 in the groove 15 opened on the bottom surface of the rotating seat 7, the external space occupied by the lifting mechanism 5 can be reduced, avoiding interference with the tail plate body 1 or other components. It can also provide physical protection for the lifting mechanism 5, preventing damage to the lifting mechanism 5 due to contact with external debris during loading and unloading operations, and extending the service life of the lifting mechanism 5. Understandably, since a through hole is provided at the bottom of the groove 15, the power output end of the lifting mechanism 5 can pass through the through hole and be detachably connected to the pallet 6, such as by a threaded connection. The through hole can also ensure the coaxiality of the power output end of the lifting mechanism 5 when connected to the pallet 6, thus preventing the pallet 6 from tilting during the lifting process of the lifting mechanism 5, effectively preventing the goods from slipping due to the tilt of the pallet 6, and further ensuring the safety of loading and unloading goods.

[0036] In one embodiment, the end of the support cylinder 14 furthest from the support plate 6 is detachably mounted with a base plate 16 for covering the lifting mechanism 5. Specifically, as shown... Figures 3 to 6 As shown, the base plate 16 can be detachably installed on the support cylinder 14 by means of threaded connection or rotating snap-fit, which facilitates the disassembly and assembly of the base plate 16 and the maintenance of the lifting mechanism 5. The base plate 16 can prevent debris, dust and other foreign objects scattered during loading and unloading operations from entering the support cylinder 14, and can also prevent foreign objects from jamming the moving parts of the lifting mechanism 5, such as the piston rod of the electric push rod and the oil circuit interface of the hydraulic cylinder, which would cause adjustment failure. It can also isolate rainwater and moisture, prevent the metal parts of the lifting mechanism 5 from rusting, and significantly extend its service life.

[0037] In one embodiment, a limiting groove 17 is formed on the top surface of the rotating seat 7, and an annular boss 18 is formed on the bottom surface of the support plate 6 to engage with the limiting groove 17. A buffer pad 19 is provided at the bottom of the limiting groove 17. Specifically, as shown... Figure 3 and Figure 6As shown, from the perspective of limiting stability, the annular boss 18 on the bottom surface of the pallet 6 and the limiting groove 17 on the top surface of the rotating seat 7 are engaged, thereby enabling precise positioning of the pallet 6 on the rotating seat 7. This prevents the pallet 6 from radially shifting due to inertia or slight vibration during the rotation of the rotating seat 7 or the lifting mechanism 5. Especially in the adjustment scenario where the tail plate body 1 is placed horizontally and the cargo is only raised by 5mm to 20mm, the engagement of the annular boss 18 and the limiting groove 17 can effectively ensure that the pallet 6 and the cargo always maintain a stable posture, preventing the cargo from tilting or slipping due to the displacement of the pallet 6. From a protective and buffering perspective, the buffer pad 19 set at the bottom of the limiting groove 17 can absorb the impact force when the pallet 6 and the rotating seat 7 come into contact. When the lifting mechanism 5 drives the pallet 6 to descend and reset, the annular boss 18 contacts the bottom of the limiting groove 17. At this time, the buffer pad 19 can avoid wear caused by hard collision between the two, which not only extends the service life of the pallet 6 and the rotating seat 7, but also reduces the vibration transmitted by the goods during the lifting and adjustment process. Especially for fragile goods, the buffer pad 19 can effectively reduce the damage to the internal goods caused by vibration, and is reliable in use.

[0038] In one embodiment, a positioning groove 20 for accommodating a rotating seat 7 is provided on the top surface of the support 3. An annular groove is provided at the bottom of the positioning groove 20 along its circumference. A plurality of balls 21 are evenly and spaced on the side of the rotating seat 7 facing the support 3, and the plurality of balls 21 are respectively embedded in the annular groove.

[0039] Specifically, such as Figures 4 to 6As shown, from the perspective of limiting and stabilizing, by opening a positioning groove 20 on the top surface of the support 3 to accommodate the rotating seat 7, the positioning groove 20 can form a double limit from the outer periphery and bottom of the rotating seat 7, thereby effectively preventing the rotating seat 7 from moving up and down or shifting due to uneven force during the orientation adjustment process of driving the goods to rotate, ensuring that the goods always maintain a stable rotation posture. From the perspective of friction reduction and wear resistance, since the ball bearings 21 on the side of the rotating seat 7 facing the support 3 are embedded in the annular groove at the bottom of the positioning groove 20, the sliding friction between the rotating seat 7 and the support 3 is transformed into rolling friction between the ball bearings 21 and the annular groove, thereby significantly reducing the frictional resistance of the rotating seat 7 during rotation: on the one hand, it can significantly reduce the power loss of the drive component, avoid overload damage to the drive component due to long-term excessive friction load, and extend the service life of the drive component; on the other hand, it can make the rotating seat 7 drive the pallet 6 and the goods to rotate more smoothly, avoiding deviation of the goods adjustment angle due to friction jamming, eliminating the need for manual secondary correction, and further improving loading and unloading efficiency. In addition, the evenly spaced design of the balls 21 ensures that the rotating seat 7 is subjected to balanced force and avoids excessive local wear. At the same time, the limiting effect of the annular groove on the balls 21 can effectively prevent the balls 21 from falling off or shifting during rotation, ensuring the long-term stable operation of the structure and ensuring that the cargo orientation adjustment process is always efficient, safe and reliable.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A lifting tailgate, characterized in that, The device includes a tailplate body (1) and an adjustment platform (2); the adjustment platform (2) is disposed on the tailplate body (1), and the adjustment platform (2) includes a support (3), a rotating mechanism (4), a lifting mechanism (5) and a tray (6); the support (3) is detachably installed on the tailplate body (1), the rotating mechanism (4) includes a rotating seat (7) and a drive assembly, the rotating seat (7) is rotatably installed on the support (3) through the drive assembly; the lifting mechanism (5) is detachably installed on the rotating seat (7), and the power output end of the lifting mechanism (5) is connected to the tray (6) and used to drive the tray (6) to move up and down relative to the tailplate body (1).

2. The lifting tailgate according to claim 1, characterized in that, The drive assembly includes a first drive member (8), a gear (9) and a transmission seat (10). The first drive member (8) is disposed on the support (3) and is connected to the gear (9) in a transmission manner. The transmission seat (10) is rotatably mounted on the support (3) and is detachably connected to the rotating seat (7). The outer wall of the transmission seat (10) has teeth that mesh with the gear (9) along its circumference.

3. A lifting tailgate according to claim 2, characterized in that, The drive assembly also includes a rotating shaft (11), a worm (12) and a worm wheel (13). The power output end of the first drive member (8) is detachably connected to the worm (12). The worm wheel (13) is located at one end of the rotating shaft (11), and the other end of the rotating shaft (11) is provided with the gear (9).

4. A lifting tailgate according to claim 1, characterized in that, The support (3) includes a hollow support cylinder (14), the rotating seat (7) extends into the support cylinder (14) and rotates in contact with the support cylinder (14), and the bottom surface of the rotating seat (7) is provided with a groove (15) for installing the lifting mechanism (5), and the bottom of the groove (15) is provided with a through hole for the power output end of the lifting mechanism (5) to pass through, so that the lifting mechanism (5) and the support plate (6) can be detachably connected.

5. A lifting tailgate according to claim 4, characterized in that, The support cylinder (14) is detachably mounted with a base plate (16) for covering the lifting mechanism (5) at one end away from the tray (6).

6. A lifting tailgate according to claim 5, characterized in that, A limiting groove (17) is provided on the top surface of the rotating seat (7), and an annular boss (18) is formed on the bottom surface of the support plate (6) to engage with the limiting groove (17). A buffer pad (19) is provided at the bottom of the limiting groove (17).

7. A lifting tailgate according to any one of claims 1-6, characterized in that, The top surface of the support (3) is provided with a positioning groove (20) for accommodating the rotating seat (7). The bottom of the positioning groove (20) is provided with an annular groove along its circumference. A number of balls (21) are evenly and spaced on the side of the rotating seat (7) facing the support (3), and the balls (21) are respectively embedded in the annular groove.

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