Automobile tailboard with adjustable transition plate

Abstract

This invention relates to the technical field of automobile tailgates, and discloses an adjustable automobile tailgate with a transition plate, including a support platform and a tailgate beam. A fixed-length rod and a lifting cylinder for driving the support platform to rise and fall are connected to one side of the tailgate beam. The outer end of the lifting cylinder is hinged to the lower part of the outer end of the fixed-length rod. A manually adjustable transition plate is connected to the upper part of the outer end of the fixed-length rod. The transition plate includes a plate body and multiple adjustment seats, which are spaced apart along the length of the plate body. The upper part of the adjustment seat is hinged to the support platform by a pin, and the lower part of the adjustment seat is bolted to the upper part of the outer end of the fixed-length rod. By manually loosening the bolts fixing the adjustment seats, the adjustment seats are manually controlled to drive the plate body to rotate along the support platform. The rotation of the plate body ensures that it is always at the same height and parallel to the top end face of the support platform, thus solving the problem of poor adaptability of automobile tailgate transition plates.

Description

Technical Field

[0001] This invention relates to the technical field of automobile tailgates, and more specifically, to automobile tailgates with adjustable transition plates. Background Technology

[0002] In recent years, with the rapid development of my country's logistics and transportation industry, the application of vehicle tailgates has become increasingly widespread. The use of vehicle tailgates has greatly improved loading and unloading efficiency and significantly saved manpower and costs, thus making them an essential piece of equipment for modern logistics and transportation.

[0003] Traditional transition plates are designed to be fixedly welded to a fixed-length rod. However, when the height of the bottom of the vehicle body from the tailgate beam changes, it is impossible to ensure that the transition plate is flush with the tailgate (i.e., the load-bearing platform). Furthermore, the installation distance often varies between different vehicle models, resulting in poor adaptability of the same tailgate to different vehicle models. Summary of the Invention

[0004] The purpose of this invention is to provide an adjustable tailgate for automobiles, which aims to solve the problem of poor adaptability of the transition plate in the prior art.

[0005] This invention is implemented as follows: it is applied to an adjustable tailgate for automobiles, including a support platform and a tailgate beam. A fixed-length rod and a lifting cylinder for driving the support platform to rise and fall are connected to one side of the tailgate beam. The outer end of the lifting cylinder is hinged to the lower part of the outer end of the fixed-length rod. A manually adjustable transition plate is connected to the upper part of the outer end of the fixed-length rod. The transition plate is hinged to the support platform via a pin. The two sides of the support platform are respectively hinged to the two sides of the tailgate beam via tilting cylinders.

[0006] The transition plate includes a plate body and multiple adjustment seats. The multiple adjustment seats are arranged at intervals along the length direction of the plate body. The upper part of the adjustment seat is hinged to the bearing platform by a pin, and the lower part of the adjustment seat is bolted to the upper part of the outer end of the fixed length rod.

[0007] When the bearing platform is arranged in a horizontal position, the bolts fixing the adjusting seat are manually loosened, and then the adjusting seat is controlled to rotate along the pin until the top surface of the plate is level with the top surface of the bearing platform. The adjusting seat is then fixed to the outer end of the fixed length rod by the bolts.

[0008] When the support platform is on the ground, the plate is positioned longitudinally directly above the support platform.

[0009] Furthermore, the adjusting seat is provided with an annular hole and a first circular hole, and the center of the annular hole coincides with the center of the first circular hole. The first circular hole is located at the upper part of the adjusting seat. The bearing platform is hinged to the adjusting seat through the first circular hole by a pin. The annular hole is located at the middle part of the adjusting seat. The upper part of the outer end of the fixed length rod is fixed to the adjusting seat by bolts passing through the annular hole.

[0010] Furthermore, the bearing platform is provided with a notch for the adjustment seat to rotate, the upper part of the adjustment seat is located in the notch, the bottom of the plate is welded to the upper part of the adjustment seat, and the plate and the first circular hole are arranged horizontally opposite each other.

[0011] Furthermore, the upper part of the outer end of the fixed-length rod is provided with a second circular hole, and the bearing platform is connected to the first circular hole through a pin, so that the fixed-length rod, the adjusting seat and the bearing platform are hinged on the same axis through the pin.

[0012] Furthermore, the upper part of the outer end of the fixed-length rod is provided with a threaded hole for bolt thread connection, and the threaded hole is located inside the annular hole.

[0013] Furthermore, the adjusting seat consists of two support plates, with an installation area formed between the two support plates at a relative interval. The outer end of the fixed-length rod is located on the installation area, and the two support plates are bolted to the outer end of the fixed-length rod.

[0014] Furthermore, the tail beam is provided with a lug, the upper part of which is hinged to the inner end of the fixed length rod, and the lower part of which is hinged to the inner end of the lifting cylinder, and the lifting cylinder is located below the fixed length rod.

[0015] Furthermore, the bearing platform has an facing end face facing the plate body, and the facing end face is provided with a plurality of support segments extending toward the plate body. The plurality of support segments are arranged at intervals along the length direction of the facing end face. The inner end of the support segment is fixedly connected to the bearing platform, and the outer end of the support segment is movably abutted against the bottom of the plate body. The bottom of the plate body is provided with a plurality of inwardly recessed positioning grooves corresponding to the support segments. The plurality of positioning grooves are arranged at intervals along the length direction of the plate body, and the inner sidewall of the positioning groove is movably abutted against the outer sidewall of the plate body.

[0016] When the supporting platform is arranged in a horizontal position, the outer wall of the support section abuts against the positioning groove of the plate, and the plate and the support section are arranged in a horizontal and vertical manner.

[0017] Furthermore, the plate has a through-cavity, with an elastically deformable airbag inside. The outer periphery of the airbag abuts against the inner wall of the inner cavity. The top surface of the plate has multiple perforated grooves for the airbag to pass through during compression. These grooves are spaced apart along the length of the top surface of the plate and communicate with the inner cavity. The inner cavity contains two opposing compression plates, which abut against the front and rear ends of the airbag. Tension strips are connected to the compression plates, with their inner ends connected to the inner walls of the compression plates and their outer ends passing through the outer periphery of the airbag and connecting to the facing end face. The two tension strips pass through openings on the front and rear sides of the inner cavity and are arranged opposite each other.

[0018] As the supporting platform moves toward the ground, the adjusting seat drive plate flips and moves away from the facing end face upwards, so that the two stretching bars pull the two compression plates to move toward each other, so that the two compression plates squeeze the airbag from front to back, so that after being squeezed from front to back, the airbag extends through the hollow groove to form a buffer compression section, which is exposed outside the plate body.

[0019] Furthermore, the internal cavity is provided with a limiting slide rail to restrict the movement range of the compression plate. The compression plate and the internal cavity are slidably connected by the limiting slide rail. The two compression plates are arranged relatively at intervals, and the interval arrangement forms a compression area in which the two compression plates move towards each other. The airbag is located in the compression area.

[0020] The airbag is equipped with two air outlets that emit a whistling sound. The two air outlets are respectively installed on the front and rear ends of the airbag. The inner end of the air outlet is connected to the airbag, and the outer end of the air outlet passes through the middle of the compression plate and extends out onto the outer side wall of the compression plate.

[0021] When the buffer compression section is subjected to an external impact, the internal air of the buffer compression section rushes out toward the air outlet, causing the air outlet to emit air and make a sound.

[0022] Compared with existing technologies ， The present invention provides an adjustable car tailgate with a transition plate. By manually loosening the bolts fixing the adjustment seat, the adjustment seat is manually controlled to drive the plate to rotate along the support platform. The rotation of the plate ensures that it is always at the same height and parallel to the top end face of the support platform, thus solving the problem of poor adaptability of the transition plate of the car tailgate. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of an adjustable car tailgate provided by the present invention;

[0024] Figure 2This is a three-dimensional schematic diagram of the fixed-length rod and transition plate provided by the present invention;

[0025] Figure 3 This is a three-dimensional schematic diagram of the transition plate provided by the present invention;

[0026] Figure 4 This is a three-dimensional schematic diagram of the fixed-length rod provided by the present invention;

[0027] Figure 5 This is a cross-sectional three-dimensional schematic diagram of the support platform and transition plate provided by the present invention;

[0028] Figure 6 This is a schematic diagram of the working state structure of the support platform and transition plate provided by the present invention. Figure 1 ;

[0029] Figure 7 This is a schematic diagram of the working state structure of the support platform and transition plate provided by the present invention. Figure 2 ;

[0030] Figure 8 This is a schematic diagram of the transition plate provided by the present invention in its rotational state on the support platform. Figure 1 ;

[0031] Figure 9 This is a schematic diagram of the transition plate provided by the present invention in its rotational state on the support platform. Figure 2 ;

[0032] Figure 10 This is a cross-sectional structural diagram of the support section and transition plate provided by the present invention;

[0033] Figure 11 This is a cross-sectional structural diagram of the transition plate provided by the present invention;

[0034] Figure 12 This is a schematic diagram of the transition plate provided by the present invention.

[0035] In the diagram: bearing platform 100, tail beam 200, fixed length rod 300, lifting cylinder 400, transition plate 500, tilting cylinder 600, notch 101, facing end face 102, support section 103, ear seat 201, second round hole 301, threaded hole 302, plate body 501, adjusting seat 502, bolt 503, annular hole 504, first round hole 505, support plate 506, installation area 507, positioning groove 508, internal cavity 509, airbag 510, hollow groove 511, compression plate 512, tension strip 513, buffer compression section 514, limit slide rail 515, air outlet 516. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0038] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0039] Reference Figure 1-12 The image shown is a preferred embodiment of the present invention.

[0040] An adjustable tailgate for automobiles includes a support platform 100 and a tailgate beam 200. A fixed-length rod 300 and a lifting cylinder 400 for driving the support platform 100 to rise and fall are connected to one side of the tailgate beam 200. The outer end of the lifting cylinder 400 is hinged to the lower outer end of the fixed-length rod 300. A manually adjustable transition plate 500 is connected to the upper outer end of the fixed-length rod 300. The transition plate 500 is hinged to the support platform 100 via a pin. The two sides of the support platform 100 are respectively hinged to the two sides of the tailgate beam 200 via tilting cylinders 600. The tilting cylinders 600 can drive the support platform 100 to open and close the tailgate.

[0041] The transition plate 500 includes a plate body 501 and multiple adjustment seats 502. The multiple adjustment seats 502 are arranged at intervals along the length direction of the plate body 501. The upper part of the adjustment seat 502 is hinged to the bearing platform 100 by a pin, and the lower part of the adjustment seat 502 is connected to the upper part of the outer end of the fixed length rod 300 by a bolt 503.

[0042] When the bearing platform 100 is arranged in a horizontal state, the adjusting seat 502 is fixed by manually unscrewing the bolt 503, and then the adjusting seat 502 is controlled to rotate along the pin until the top surface of the plate 501 is level with the top surface of the bearing platform 100. The adjusting seat 502 is then fixed to the outer end of the fixed length rod 300 by the bolt 503.

[0043] When the support platform 100 is on the ground, the plate 501 is positioned longitudinally directly above the support platform 100.

[0044] The aforementioned adjustable tailgate for automobiles solves the problem of poor adaptability of the transition plate 500 by manually loosening the bolt 503 to fix the adjusting seat 502, thereby manually controlling the adjusting seat 502 to drive the plate 501 to rotate along the support platform 100. This ensures that the plate 501 is always at the same height and parallel to the top end face of the support platform 100.

[0045] The transition plate 500 drives the plate body 501 to rotate to the same height and parallel to the top end face of the bearing platform 100 via the adjusting seat 502. The adjusting seat 502 is fixedly installed on the fixed length rod 300 by bolts 503. The adjusting seat 502 can also be controlled to drive the plate body 501 to rotate by loosening the bolts 503 to fix the adjusting seat 502.

[0046] In this embodiment, the adjusting seat 502 is provided with an annular hole 504 and a first circular hole 505, and the center of the annular hole 504 coincides with the center of the first circular hole 505. The first circular hole 505 is located on the upper part of the adjusting seat 502. The bearing platform 100 is hinged to the adjusting seat 502 through the first circular hole 505 via a pin. In this way, the adjusting seat 502 can be controlled to rotate relative to the bearing platform 100 along the pin, thereby controlling the adjusting seat 502 to drive the plate 501 to rotate.

[0047] The annular hole 504 is located in the middle of the adjusting seat 502. The upper part of the outer end of the fixed length rod 300 is fixed to the adjusting seat 502 by means of bolts 503 passing through the annular hole 504. In this way, after the adjusting seat 502 is rotated, it can always be fixed to the fixed length rod 300 by means of bolts 503 passing through the annular hole 504.

[0048] In this embodiment, the support platform 100 is provided with a notch 101 for the adjustment seat 502 to rotate. The upper part of the adjustment seat 502 is located in the notch 101, and the bottom of the plate 501 is welded to the upper part of the adjustment seat 502. The plate 501 and the first circular hole 505 are arranged horizontally opposite each other. In this way, when the support platform 100 moves to the ground, the bottom of the adjustment seat 502 is driven to rotate above the notch 101 by the swing of the fixed length rod 300, thereby causing the plate 501 to rotate above the support platform 100, forming a baffle.

[0049] When the carrying platform 100 moves downwards in parallel, since the plate 501 is already fixed on the fixed-length rod 300, it will move downwards with the carrying platform 100, causing its angle relative to the top end face of the carrying platform 100 to change. If the top end face of the carrying platform 100 is taken as a reference, the plate 501 will rotate counterclockwise around the axis of the pin until the carrying platform 100 is lowered to the lowest point. At this point, the plate 501 has rotated to a state higher than the top end face of the carrying platform 100. When goods are transported from the ground to the carrying platform 100, the plate 501 in this state can act as a barrier.

[0050] When the support platform 100 is on the ground, the plate 501 is located directly above the notch 101.

[0051] The upper part of the outer end of the fixed length rod 300 is provided with a second circular hole 301. The bearing platform 100 is connected to the second circular hole 301 and the first circular hole 505 through a pin, so that the fixed length rod 300, the adjusting seat 502 and the bearing platform 100 are hinged on the same axis through the pin. In this way, it can be ensured that the top surface of the adjusting seat 502 can drive the top surface of the plate 501 to always remain parallel and at the same height with the top surface of the bearing platform 100.

[0052] The lifting cylinder 400 can be used to ensure that the carrying platform 100 is level while lifting. When the top end of the carrying platform 100 is level with the bottom of the carriage, the length of the lifting cylinder 400 is locked. By extending the length of the tilting cylinder 600, the carrying platform 100 can be tilted upward around the same axis as the pin to achieve the closing action of the carrying platform 100. Reversing the direction can achieve the opening action.

[0053] When the support platform 100 descends to its lowest point and contacts the ground, the length of the locking lifting cylinder 400 remains unchanged. By shortening the length of the tilting cylinder 600, the support platform 100 can be tilted downwards around the same axis where the pin is located, thus realizing the "head-down" action of the support platform 100. Reversing the direction can realize the "head-up" action.

[0054] In this embodiment, the upper part of the outer end of the fixed length rod 300 is provided with a threaded hole 302 for the bolt 503 to be threadedly connected, and the threaded hole 302 is located in the annular hole 504.

[0055] One or more threaded holes 302 are located on the same circle with the second circular hole 301 as the center. The radius of the second circular hole 301 is exactly equal to the radius of the center circle of the annular hole 504. This makes it easy for the bolt 503 to pass through the annular hole 504 and be threadedly connected to the threaded hole 302.

[0056] In this embodiment, the adjusting seat 502 is composed of two support plates 506, with an installation area 507 formed between the two support plates 506 at a relative interval. The outer end of the fixed length rod 300 is located on the installation area 507, and the two support plates 506 are installed on the outer end of the fixed length rod 300 by bolts 503. In this way, it can be ensured that the two support plates 506 drive the plate body 501 to rotate as the fixed length rod 300 swings, and it is also convenient to fix the support plates 506 on the outer end of the fixed length rod 300, and it is also convenient to control the support plates 506 to drive the plate body 501 to rotate.

[0057] The tail beam 200 is provided with a lug 201. The upper part of the lug 201 is hinged to the inner end of the fixed length rod 300, and the lower part of the lug 201 is hinged to the inner end of the lifting cylinder 400. The lifting cylinder 400 is located below the fixed length rod 300. The tail beam 200 is facilitated by the lug 201 for the installation, disassembly and maintenance of the lifting cylinder 400 and the fixed length rod 300.

[0058] In this embodiment, the support platform 100 has an facing end face 102 facing the plate 501. The facing end face 102 is provided with a plurality of support segments 103 extending toward the plate 501. The plurality of support segments 103 are arranged at intervals along the length direction of the facing end face 102. The inner end of the support segment 103 is fixedly connected to the support platform 100, and the outer end of the support segment 103 is movably abutting against the bottom of the plate 501. The bottom of the plate 501 is provided with a plurality of inwardly recessed positioning grooves 508 corresponding to the support segments 103. The plurality of positioning grooves 508 are arranged at intervals along the length direction of the plate 501, and the inner sidewall of the positioning groove 508 is movably abutting against the outer sidewall of the plate 501.

[0059] When the support platform 100 is arranged in a horizontal state, the outer wall of the support section 103 abuts against the positioning groove 508 of the plate 501, and the plate 501 and the support section 103 are arranged in a horizontal and vertical manner.

[0060] The support platform 100 provides support to the plate 501 through the support section 103, and the plate 501 uses the positioning groove 508 to fit with the support section 103 to increase the stability of the plate 501 and prevent it from shaking during the lifting process; the support section 103 can also increase the speed at which the top end face of the plate 501 is aligned with the top end face of the support platform 100.

[0061] In this embodiment, the plate 501 has a through-cavity 509, and an elastically deformable airbag 510 is provided in the internal cavity 509. The outer periphery of the airbag 510 abuts against the inner wall of the internal cavity 509. The top end face of the plate 501 is provided with a plurality of hollow grooves 511 for the airbag 510 to squeeze through. The plurality of hollow grooves 511 are arranged sequentially at intervals along the length direction of the top end face of the plate 501. The hollow grooves 511 are connected to the internal cavity 509. The internal cavity 509 is provided with two opposing compression plates 512. The two compression plates 512 abut against the front and rear ends of the airbag 510 respectively. A tension strip 513 is connected to the compression plate 512. The inner end of the tension strip 513 is connected to the inner wall of the compression plate 512. The outer end of the tension strip 513 passes away from the compression plate 512, passes through the outer periphery of the airbag 510 and connects to the end face 102. The two tension strips 513 pass through the front and rear openings of the internal cavity 509 respectively and are arranged opposite to each other.

[0062] As the support platform 100 moves toward the ground, the adjusting seat 502 drives the plate 501 to flip and move upward away from the facing end face 102, so that the two tension bars 513 pull the two compression plates 512 to move toward each other, so that the two compression plates 512 squeeze the airbag 510 in the front and back, so that after being squeezed in the front and back, the airbag 510 extends through the hollow groove 511 to form a buffer compression section 514, which is exposed outside the plate 501.

[0063] When goods are being loaded on the carrying platform 100, as the goods move from the carrying platform 100 to the plate 501, the plate 501 can buffer the impact of the goods through the buffer compression section 514, and protect the goods and the plate 501 from damage due to the collision.

[0064] In this embodiment, the internal cavity 509 is provided with a limiting slide rail 515 to limit the movement range of the compression plate 512. The compression plate 512 and the internal cavity 509 are slidably connected through the limiting slide rail 515. The two compression plates 512 are arranged relatively at intervals, and the interval arrangement forms a compression area in which the two compression plates 512 move towards each other. The airbag 510 is located in the compression area.

[0065] The airbag 510 is provided with two air outlets 516 that emit air and make a sound. The two air outlets 516 are respectively installed on the front and rear ends of the airbag 510. The inner end of the air outlet 516 is connected to the airbag 510, and the outer end of the air outlet 516 passes through the middle of the compression plate 512 and extends out onto the outer side wall of the compression plate 512.

[0066] When the buffer compression section 514 is impacted by an external force, the internal air of the buffer compression section 514 rushes out toward the air outlet 516, causing the air outlet 516 to emit air and make a sound.

[0067] When goods are being loaded on the carrying platform 100, when the goods move from the carrying platform 100 to the plate 501, the goods hit the buffer compression section 514, and the air in the buffer compression section 514 is released through the air outlet 516 to make a sound, so as to warn the staff to pay attention to operational safety and prevent the goods from moving to the edge of the carrying platform 100, which could lead to an accident during the lifting process.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vehicle tailgate with an adjustable transition plate, characterized in that, The device includes a support platform and a tail beam. A fixed-length rod and a lifting cylinder for driving the support platform to rise and fall are connected to one side of the tail beam. The outer end of the lifting cylinder is hinged to the lower part of the outer end of the fixed-length rod. A manually adjustable transition plate is connected to the upper part of the outer end of the fixed-length rod. The transition plate is hinged to the support platform via a pin. The two sides of the support platform are respectively hinged to the two sides of the tail beam via tilting cylinders. The transition plate includes a plate body and multiple adjustment seats. The multiple adjustment seats are arranged at intervals along the length direction of the plate body. The upper part of the adjustment seat is hinged to the bearing platform by a pin, and the lower part of the adjustment seat is bolted to the upper part of the outer end of the fixed length rod. When the bearing platform is arranged in a horizontal position, the bolts fixing the adjusting seat are manually loosened, and then the adjusting seat is controlled to rotate along the pin until the top surface of the plate is level with the top surface of the bearing platform. The adjusting seat is then fixed to the outer end of the fixed length rod by the bolts. When the support platform is on the ground, the plate is positioned longitudinally directly above the support platform; The adjusting seat is provided with an annular hole and a first circular hole, and the center of the annular hole coincides with the center of the first circular hole. The first circular hole is located at the upper part of the adjusting seat. The bearing platform is hinged to the adjusting seat through the first circular hole by a pin. The annular hole is located at the middle part of the adjusting seat. The upper part of the outer end of the fixed length rod is fixed to the adjusting seat by bolts passing through the annular hole.

2. The adjustable tailgate for automobiles as described in claim 1, characterized in that, The support platform is provided with a notch for the adjustment seat to rotate. The upper part of the adjustment seat is located in the notch. The bottom of the plate is welded to the upper part of the adjustment seat, and the plate and the first circular hole are arranged horizontally opposite each other.

3. The adjustable tailgate for automobiles as described in claim 2, characterized in that, The upper part of the outer end of the fixed length rod is provided with a second circular hole. The bearing platform is connected to the first circular hole through a pin, so that the fixed length rod, the adjusting seat and the bearing platform are hinged on the same axis through the pin.

4. The adjustable tailgate for automobiles as described in claim 3, characterized in that, The upper part of the outer end of the fixed-length rod is provided with a threaded hole for bolt thread connection, and the threaded hole is located inside the annular hole.

5. The vehicle tailgate with adjustable transition plate as described in any one of claims 1 to 4, characterized in that, The adjusting seat consists of two support plates, with an installation area formed between the two support plates. The outer end of the fixed-length rod is located on the installation area, and the two support plates are bolted to the outer end of the fixed-length rod.

6. The vehicle tailgate with adjustable transition plate as described in any one of claims 1 to 4, characterized in that, The tail section beam is provided with an ear seat. The upper part of the ear seat is hinged to the inner end of the fixed length rod, and the lower part of the ear seat is hinged to the inner end of the lifting cylinder. The lifting cylinder is located below the fixed length rod.

7. The vehicle tailgate with adjustable transition plate as described in any one of claims 1 to 4, characterized in that, The support platform has an facing end face facing the plate body. The facing end face is provided with a plurality of support segments extending towards the plate body. The plurality of support segments are arranged at intervals along the length direction of the facing end face. The inner end of the support segment is fixedly connected to the support platform. The outer end of the support segment is movably abutted against the bottom of the plate body. The bottom of the plate body is provided with a plurality of inwardly recessed positioning grooves corresponding to the support segments. The plurality of positioning grooves are arranged at intervals along the length direction of the plate body. The inner sidewall of the positioning groove is movably abutted against the outer sidewall of the plate body. When the supporting platform is arranged in a horizontal position, the outer wall of the support section abuts against the positioning groove of the plate, and the plate and the support section are arranged in a horizontal and vertical manner.

8. The adjustable tailgate for automobiles as described in claim 7, characterized in that, The plate has a through-cavity, with an elastically deformable airbag inside. The outer periphery of the airbag abuts against the inner wall of the cavity. Multiple perforated grooves for the airbag to pass through are provided on the top surface of the plate. These grooves are spaced apart along the length of the top surface and communicate with the cavity. Two opposing compression plates are located within the cavity, abutting against the front and rear ends of the airbag. Tension strips are connected to the compression plates, with their inner ends connected to the inner walls and their outer ends passing through the outer periphery of the airbag and connecting to the facing end face. The two tension strips pass through openings on the front and rear sides of the cavity and are arranged opposite each other. As the supporting platform moves toward the ground, the adjusting seat drive plate flips and moves away from the facing end face upwards, so that the two stretching bars pull the two compression plates to move toward each other, so that the two compression plates squeeze the airbag from front to back, so that after being squeezed from front to back, the airbag extends through the hollow groove to form a buffer compression section, which is exposed outside the plate body.

9. The adjustable tailgate for automobiles as described in claim 8, characterized in that, The internal cavity is provided with a limiting slide rail to restrict the movement range of the compression plate. The compression plate is slidably connected to the internal cavity through the limiting slide rail. The two compression plates are arranged relatively at intervals, and the interval arrangement forms a compression area in which the two compression plates move towards each other. The airbag is located in the compression area. The airbag is equipped with two air outlets that emit a whistling sound. The two air outlets are respectively installed on the front and rear ends of the airbag. The inner end of the air outlet is connected to the airbag, and the outer end of the air outlet passes through the middle of the compression plate and extends out onto the outer side wall of the compression plate. When the buffer compression section is subjected to an external impact, the internal air of the buffer compression section rushes out toward the air outlet, causing the air outlet to emit air and make a sound.

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