Safe and stable hydraulic loading and unloading platform

Abstract

The application discloses a safe and stable hydraulic loading and unloading platform and relates to the technical field of the hydraulic loading and unloading platform, which comprises a bottom box, limiting mechanisms, a hydraulic lifting module, a loading platform, an extension mechanism and a tail plate. The two groups of limiting mechanisms are respectively arranged at the left and right bottom ends in the bottom box. The limiting mechanism comprises a recovery groove, a driving motor, a screw rod, an extension cylinder one, an extension cylinder two and a clamping seat and the like components. Through mutual cooperation, the limiting mechanisms can limit and fix the rear wheels of the unloading vehicle, can effectively prevent the vehicle from sliding due to the influence of weight or slope during unloading, thereby affecting the safety during unloading. The inner end of the bottom box is connected with the loading platform through the hydraulic lifting module. The front bottom end of the loading platform is provided with the extension mechanism. The extension mechanism can extend to the inner end of the carriage and tightly fix the inner bottom surface of the carriage, prevents the height difference caused by the weight change and forms secondary protection, thereby guaranteeing the stability during unloading.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydraulic loading and unloading platforms, in particular to a safe and stable hydraulic loading and unloading platform. BACKGROUND

[0002] The hydraulic loading and unloading platform is a commonly used loading and unloading equipment in the fields of logistics and warehousing, which mainly realizes lifting action through hydraulic drive, provides a horizontal loading and unloading interface for vehicles of different heights, connects vehicles with the ground or a warehousing area, reduces the manual carrying strength in the process of transferring goods, and improves the efficiency of loading and unloading operation, and is an important auxiliary equipment in the modern goods turnover system.

[0003] The existing hydraulic loading and unloading platforms have the problem of single structure, lack flexible ground connection structure, there may be a height difference step on the goods carrying path, which may affect the safety of goods carrying, and the connection with the vehicle compartment is poor, lacks an extension fixing structure adapted to the vehicle compartment, and the stability during loading and unloading is insufficient, and some hydraulic loading and unloading platforms lack a limiting and fixing structure for the loading and unloading vehicles, so that during loading and unloading of goods, the vehicle may slide due to weight change and slope, which is difficult to ensure the safety and stability during loading and unloading. SUMMARY

[0004] The purpose of the present application is to provide a safe and stable hydraulic loading and unloading platform to solve the problems raised in the background.

[0005] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: a safe and stable hydraulic loading and unloading platform, comprising a bottom box, a group of limiting mechanisms are arranged at the left bottom end and the right bottom end in the bottom box, a hydraulic lifting module is arranged at the inner end of the bottom box, a group of load platforms are connected to the top end of the hydraulic lifting module, an extension mechanism is arranged at the bottom front end of the load platform, and two groups of tail plates are connected to the rear end of the load platform.

[0006] The components of the limiting mechanism are the same, the right end of the limiting mechanism comprises a recovery groove, a driving motor, a lead screw, an extension cylinder one, an extension cylinder two and a clamping seat, a group of recovery grooves are formed at the right bottom end in the bottom box, a group of lead screws are connected to the inner rear end of the recovery groove through the driving motor, a group of extension cylinder ones are sleeved on the outer side of the lead screw, a group of extension cylinder twos are connected to the front end of the extension cylinder one, and a group of clamping seats are hinged to the front end of the extension cylinder two.

[0007] By adopting the technical scheme, the base structure of the hydraulic loading and unloading platform is constructed, the bottom box is used to provide an installation carrier, the limiting mechanism is used to limit the wheels of the vehicle, the hydraulic lifting module is used to drive the loading platform to complete the lifting action, the extension mechanism is used to connect with the inside of the carriage, which is beneficial to the transportation of goods, the tail plate is convenient for the goods to go up and down the platform, the overall structure layout is reasonable, the lifting, limiting and extension functions of the loading and unloading platform can be realized, and the convenience and stability of loading and unloading operation are improved.

[0008] Preferably, the inner end of the extension cylinder two is provided with an inner groove, the inner groove is provided with a group of hydraulic push rods one at the rear end, the output end of the hydraulic push rod one is connected with a group of linkage seats at the front end, the linkage seat is provided with a linkage groove at the front middle end, the linkage groove is connected with a group of linkage plates, and the other end of the linkage plate is connected with the clamping seat.

[0009] By adopting the technical scheme, the linkage seat is pushed forward or backward by the hydraulic push rod one in the extension cylinder two to recover, so that the linkage plate adjusts the rotation angle of the clamping seat clamping the wheel or releasing the wheel, the position and angle of the clamping seat can be flexibly adjusted, the vehicle is prevented from sliding, different working requirements are adapted, and the working safety is improved.

[0010] Preferably, the extension mechanism comprises a bottom groove, hydraulic push rods two, a push plate, an extension panel and a lifting mechanism, the bottom front end of the loading platform is provided with a bottom groove, the bottom groove is provided with a group of inner grooves at the left and right ends, the bottom groove is provided with a group of hydraulic push rods two at the rear end, the output end of the hydraulic push rod two is connected with a group of push plates at the front end, the left and right sides of the push plate are provided with protrusions one corresponding to the inner grooves, the push plate is connected with a group of extension panels at the front end, and the left and right ends of the loading platform are provided with a group of lifting mechanisms.

[0011] By adopting the technical scheme, the push plate is moved by the hydraulic push rod two in the bottom groove, the extension panel can be extended or retracted, and the extension panel can be adjusted up and down after being extended, the bottom surface of the carriage can be pressed down after being extended into the carriage, the vehicle can be further limited and fixed, the goods can be transported up and down, and the safety and stability during loading and unloading can be improved.

[0012] Preferably, the rear end of the extension panel is connected with the front end of the push plate through a connecting plate one, and the left and right sides of the extension panel are provided with protrusions two corresponding to the inner grooves.

[0013] By adopting the technical scheme, the push plate and the extension panel are connected through the connecting plate one, and the extension panel moves along the fixed track through the cooperation of the protrusions two and the inner grooves, so that deviation is avoided, and the stability of the extension panel during movement is effectively improved.

[0014] Preferably, the components of the lifting mechanism are the same, and the left end of the lifting mechanism comprises a fixed block, an inner cavity one, a moving plate, an inner cavity two, a hydraulic push rod three, a through slot, a connecting plate two and an inner buckle plate, a group of fixed blocks are arranged at the front left end of the object carrying platform, a group of inner cavity ones are arranged at the inner end of the fixed block, a group of moving plates are arranged in the inner cavity one, a group of inner cavity twos are arranged at the inner middle end of the moving plate, and a hydraulic push rod three corresponding to the inner cavity two is arranged at the inner bottom middle end of the inner cavity one, the output end top of the hydraulic push rod three is connected with the inner top surface of the inner cavity two, two groups of through slots are arranged at the right side in the inner cavity one, the connecting plate two corresponding to the through slot is arranged at the right side of the moving plate, and the two groups of connecting plate two are extended to the right side of the fixed block through the through slot and connected with a group of inner buckle plates.

[0015] By adopting the above technical scheme, the hydraulic push rod three in the fixed block can push the moving plate to rise and fall, and drive the connecting plate two and the inner buckle plate to move synchronously, so that the height of the inner buckle plate and the extension panel can be accurately adjusted, the lower pressing of the inner bottom surface of the carriage can be realized, the vehicle from running can be prevented, and the safety during loading and unloading is improved.

[0016] Preferably, when the inner buckle plate is located at the bottom end, it is flush with the inner side of the inner side groove.

[0017] By adopting the above technical scheme, it is ensured that the convex strip two on the side of the extension panel can smoothly move between the inner buckle plate and the inner side groove, so that jamming is avoided, and the smoothness of the sliding process is improved.

[0018] Preferably, the front middle end of the push plate is provided with not less than two groups of dovetail type convex blocks at equal intervals, the rear end of the connecting plate one is provided with opposite dovetail grooves, and the dovetail type convex blocks are slid up and down along the dovetail grooves.

[0019] By adopting the above technical scheme, due to the cooperation of the dovetail type convex blocks and the dovetail grooves, a mortise and tenon structure is formed, which can prevent the push plate and the extension panel from being separated, and the extension panel can slide up and down along the dovetail type convex blocks, adapt to the pressing operation of the inner bottom surface of the carriage, prevent mutual interference between components, and enhance the use flexibility.

[0020] Preferably, the extension panel, the object carrying platform and the tail plate top surface are all provided with anti-skid lines.

[0021] By adopting the above technical scheme, the friction between the goods and the platform surface can be effectively increased, the goods can be prevented from slipping and falling during loading and unloading, and the operation safety is improved.

[0022] Preferably, the bottom surfaces of the extension cylinder one and the extension cylinder two are both provided with rollers, and the inner bottom ends of the recovery grooves are both provided with recovery grooves corresponding to the rollers.

[0023] By adopting the technical scheme, the rollers can support the extension cylinder I and the extension cylinder II, avoid the front end from falling due to overextension, and reduce the resistance when the extension cylinder I and the extension cylinder II move, so that the extension and retraction operation is more smooth and convenient, and the rollers can be retracted into the recovery groove, avoiding interference between components when the extension cylinder I is retracted.

[0024] Preferably, the extension cylinder I and the extension cylinder II are connected in a horizontal direction.

[0025] By adopting the technical scheme, the up-down angle can be achieved, the vehicle parking position of different slopes can be adapted, and the use flexibility is effectively improved.

[0026] Compared with the prior art, the present application has the following advantages:

[0027] 1. The two sets of limiting mechanisms arranged at the left and right bottom ends in the bottom box improve the fixing effect on the loading and unloading vehicles, and the limiting mechanism comprises a recovery groove, a driving motor, a lead screw, an extension cylinder I, an extension cylinder II and a clamping seat. The driving motor drives the lead screw to rotate and drive the extension cylinder I and the extension cylinder II to move forward and backward to approach the wheel position, adapt to different vehicle models, and the extension cylinder II can be rotated up and down through horizontal hinging with the extension cylinder I, adapt to different parking positions of different slopes, and cooperate with the clamping seat with anti-skid lines to adhere to the wheel to limit the vehicle, which can effectively prevent the vehicle from sliding and greatly improve the safety during loading and unloading.

[0028] 2. The extension mechanism arranged at the bottom front end of the loading platform comprises a bottom groove, a hydraulic push rod II, a push plate, an extension panel and a lifting mechanism. The hydraulic push rod II can push the extension panel forward, so that the extension panel extends into the vehicle compartment to form a connection between the vehicle compartment and the loading and unloading platform, and the anti-skid lines on the surface can increase the friction to prevent the goods from slipping during transportation, which is beneficial to the transportation of goods. Meanwhile, the push plate is connected with the extension panel through the connecting plate I, the dovetail type protrusion and the dovetail groove cooperate to prevent accidental separation of the two and achieve the up-down sliding effect. The lifting mechanism comprises a fixed block, an inner cavity I, a moving plate, an inner cavity II, a hydraulic push rod III, a through groove, a connecting plate II and an inner buckle plate. The hydraulic push rod III can drive the inner buckle plate to press down the vehicle compartment bottom surface, avoid the vehicle compartment from moving down due to the accumulation of goods, and form a gap between the extension panel, and a double fixing system is constructed with the limiting mechanism to realize double limitation of the vehicle, which not only optimizes the convenience of goods transportation, but also improves the safety during loading and unloading.

[0029] 3. The present application is provided with a hydraulic lifting module, a loading platform and a tail plate connected to the rear end of the loading platform at the top end of the bottom box. The shear type hydraulic lifting module can drive the loading platform to move up and down to realize height adjustment and adapt to different vehicle models, thus optimizing the poor adaptability of the traditional loading and unloading platform. The two tail plates are hinged to the loading platform, the front tail plate can rotate synchronously with the height adjustment of the loading platform, and the rear tail plate keeps in contact with the ground to build a smooth cargo transportation channel and form a transportation ramp, which is conducive to the loading and unloading of goods and greatly improves the loading and unloading efficiency and operation convenience. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present application;

[0031] Figure 2 It is a right view structural schematic diagram of the limiting mechanism of the present application;

[0032] Figure 3 It is a structural schematic diagram of the rear end inside the recovery tank of the present application;

[0033] Figure 4 It is a top view structural schematic diagram of the clamping seat of the present application;

[0034] Figure 5 It is a right view structural schematic diagram of the inside of the extension mechanism of the present application;

[0035] Figure 6 It is a structural schematic diagram of the extension panel of the present application;

[0036] Figure 7 It is a partial top view structural schematic diagram of the push plate and the connecting plate of the present application;

[0037] Figure 8 It is a structural schematic diagram of the lifting mechanism of the present application;

[0038] Figure 9 It is a front view structural schematic diagram of the inside of the lifting mechanism of the present application.

[0039] In the figure: bottom box-1, limiting mechanism-2, hydraulic lifting module-3, loading platform-4, extension mechanism-5, tail plate-6, recovery tank-21, drive motor-22, lead screw-23, extension cylinder-24, extension cylinder-25, clamping seat-26, inner groove-251, hydraulic push rod-252, linkage seat-253, linkage groove-254, linkage plate-255, bottom groove-51, hydraulic push rod-52, push plate-53, extension panel-54, lifting mechanism-55, inner groove-511, protrusion-531, connecting plate-541, protrusion-542, fixed block-551, inner cavity-552, moving plate-553, inner cavity-554, hydraulic push rod-555, through groove-556, connecting plate-557, inner buckle plate-558. Detailed Implementation

[0040] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments.

[0041] Please see Figure 1 This invention provides a safe and stable hydraulic loading and unloading platform, including a base box 1. The bottom left and bottom right ends of the base box 1 are each equipped with a limiting mechanism 2 for fixing and limiting loading / unloading vehicles. The inner end of the base box 1 is equipped with a scissor-type hydraulic lifting module 3. A loading platform 4 is connected to the top of the hydraulic lifting module 3. The loading platform 4 can be moved up and down by the scissor-type hydraulic lifting module 3 to accommodate vehicles of different heights. The bottom front end of the loading platform 4 is equipped with an extension mechanism 5, which extends to the bottom surface of the vehicle's cargo compartment and is pressed down for fixation. This, combined with the limiting mechanism 2, forms a double constraint, effectively preventing vehicle slippage and improving safety and stability during loading and unloading. The rear end of the loading platform 4 is hinged with two sets of tail plates 6. When the height of the loading platform 4 is adjusted, the rotation of the two sets of tail plates 6 connects the loading platform 4 to the ground, facilitating the vertical transport of goods.

[0042] Specifically, a basic structure for a hydraulic loading and unloading platform was constructed. The base box 1 provides the installation carrier, the limiting mechanism 2 restricts the vehicle wheels, the hydraulic lifting module 3 drives the cargo platform 4 to complete the lifting action, and the extension mechanism 5 connects to the inside of the truck bed, which is conducive to the transportation of goods. The tail plate 6 facilitates the loading and unloading of goods onto and off the platform. The overall structural layout is reasonable and can realize the lifting, limiting and extension functions of the loading and unloading platform, improving the convenience and stability of loading and unloading operations.

[0043] Please see Figures 1-4The left and right limit mechanisms 2 are mirror images of each other, with identical components. The right limit mechanism 2 includes a recycling trough 21, a drive motor 22, a lead screw 23, an extension cylinder 1 24, an extension cylinder 25, and a mounting base 26. A recycling trough 21 is provided at the bottom right end of the base box 1. A lead screw 23 is connected to the rear end of the recycling trough 21 via the drive motor 22. The rotation of the drive shaft of the drive motor 22 can drive the lead screw 23 to rotate. An extension cylinder 1 24 is sleeved on the outside of the lead screw 23. The inner side of the extension cylinder 1 24 has an internal thread corresponding to the lead screw 23. When the lead screw 23 rotates, it can drive the extension cylinder 1 24 to move back and forth through the internal thread. An extension cylinder 25 is hinged to the front end of the extension cylinder 1 24. The extension cylinder 1 24 and the extension cylinder 2 25 are hinged in the horizontal direction, which can realize the vertical angle to adapt to the parking position of vehicles with different slopes, effectively improving the efficiency of parking. For added flexibility, both the bottom surfaces of extension cylinder 1 24 and extension cylinder 2 25 are equipped with rollers, and the bottom end of the retrieval trough 21 is equipped with a retrieval groove corresponding to the rollers. The rollers can support extension cylinder 1 24 and extension cylinder 2 25, preventing the front end from sagging due to excessive extension, and reducing the resistance when extension cylinder 1 24 and extension cylinder 2 25 move, making the extension and retraction action smoother and more convenient. At the same time, the rollers can be retracted into the retrieval groove to avoid interference between components when extension cylinder 1 24 is retracted. The front end of extension cylinder 2 25 is hinged with a set of retaining seats 26. The rear end of retaining seats 26 is set as an inclined surface, and the inclined surface is provided with anti-slip texture, which can fit against the front bottom end of the wheel to limit and fix the wheel and prevent the vehicle from slipping. The right rear end of retaining seat 26 is hinged to the front left end of extension cylinder 2 25. Retaining seat 26 can be rotated to fit the right side against the front end of extension cylinder 2 25 to form a straight line.

[0044] Specifically, the recycling trough 21 inside the bottom box 1 can be used to recycle the extension tube 24, reducing the occupation of external space. The drive motor 22 can drive the lead screw 23 to rotate, causing the extension tube 24 sleeved on the outside of the lead screw 23 to move back and forth, thereby driving the extension tube 25 to extend and retract synchronously. It can be adapted to vehicles of different sizes, and with the rotation of the card seat 26, it can simultaneously fix the rear two wheels of the vehicle, prevent the vehicle from slipping, and improve the safety of loading and unloading goods.

[0045] Please see Figure 2 and Figure 4 An inner groove 251 is provided at the inner end of the extension cylinder 25. A set of hydraulic push rods 252 is installed at the rear end of the inner groove 251. A set of linkage seats 253 is connected to the front end of the output end of the hydraulic push rods 252. A linkage groove 254 is provided at the front middle end of the linkage seat 253. A set of linkage plates 255 is hinged in the linkage groove 254. The other end of the linkage plate 255 is hinged to the front right side of the card seat 26. The hydraulic push rods 252 can push or retract the output end to drive the linkage plate 255 to move synchronously, and the linkage plate 255 can drive the card seat 26 to rotate, thereby realizing the limiting or release of the wheel.

[0046] Specifically, the hydraulic push rod 252 inside the extension cylinder 25 pushes the linkage seat 253 to move forward or backward and retract, thereby the linkage plate 255 can adjust the rotation angle of the card seat 26 to lock or release the wheel. The position and angle of the card seat 26 can be flexibly adjusted to prevent the vehicle from slipping, adapt to different work requirements, and improve work safety.

[0047] Please see Figure 1 and Figure 5 The extension mechanism 5 includes a bottom groove 51, a second hydraulic push rod 52, a push plate 53, an extension panel 54, and a lifting mechanism 55. The bottom front end of the loading platform 4 has a bottom groove 51. Both the left and right ends of the bottom groove 51 have a set of inner grooves 511. A set of second hydraulic push rods 52 is installed at the rear end of the bottom groove 51. A set of push plates 53 is fixedly connected to the front end of the output end of the second hydraulic push rod 52. The left and right sides of the push plates 53 have corresponding protrusions 531 on both sides of the inner grooves 511. When the second hydraulic push rod 52 pushes or retracts its output end, it can... The push plate 53 moves back and forth along the inner groove 511 in the bottom groove 51. The front end of the push plate 53 is slidably connected to a set of extension panels 54, which can drive the extension panels 54 to move back and forth synchronously, which is beneficial to extend the extension panels 54 into the carriage. The extension panels 54, the loading platform 4 and the top surface of the tail plate 6 are all provided with anti-slip texture, which can effectively increase the friction between the goods and the platform surface, prevent the goods from slipping and falling during loading and unloading, and improve the safety of operation. In addition, the front left and right ends of the loading platform 4 are provided with a set of lifting mechanisms 55.

[0048] Specifically, the hydraulic push rod 52 in the bottom groove 51 is used to push the push plate 53 to move, which can drive the extension panel 54 to extend or retract. After the extension panel 54 extends, it can be adjusted up and down in conjunction with the lifting mechanism 55. After extending into the carriage, it can press down on the bottom surface of the carriage, which can further limit and fix the vehicle. This not only facilitates the up and down transportation of goods, but also improves the safety and stability during loading and unloading.

[0049] Please see Figures 6-7 The rear end of the extension panel 54 is connected to the front end of the push plate 53 via a connecting plate 541. The push plate 53 has at least two sets of dovetail protrusions at equal intervals at its front and middle ends. The rear end of the connecting plate 541 has a corresponding dovetail groove and can slide up and down along the dovetail protrusions. Due to the cooperation between the dovetail protrusions and the dovetail grooves, a mortise and tenon structure is formed, which can prevent the push plate 53 from separating from the extension panel 54. The extension panel 54 can slide up and down along the dovetail protrusions, which is suitable for pressing down on the bottom surface of the carriage, preventing mutual interference between components and enhancing the flexibility of use. The left and right sides of the extension panel 54 are provided with corresponding inner grooves 511 protrusions 542. The extension panel 54 can improve the stability of movement in the bottom groove 51 through the protrusions 542.

[0050] Specifically, the push plate 53 and the extension panel 54 are connected by the connecting plate 541, and the extension panel 54 is connected by the protrusion 542 and the inner groove 511. This ensures that the extension panel 54 moves along a fixed trajectory during the movement, avoiding deviation and effectively improving the stability of the extension panel 54 during movement.

[0051] Please see Figures 8-9 The left and right lifting mechanisms 55 are mirror images of each other, with identical components. The left lifting mechanism 55 includes a fixed block 551, an inner cavity 1 552, a movable plate 553, an inner cavity 2 554, a hydraulic push rod 3 555, a through groove 556, a connecting plate 2 557, and an inner buckle plate 558. A fixed block 551 is fixedly connected to the front left end of the loading platform 4. An inner cavity 1 552 is opened in the inner end of the fixed block 551. A movable plate 553 is slidably connected in the inner cavity 1 552. An inner cavity 2 554 is opened in the middle of the movable plate 553. A hydraulic push rod 3 555 corresponding to the inner cavity 2 554 is installed in the middle of the bottom surface of the inner cavity 1 552. The top end of the output end of the hydraulic push rod 3 555 is connected to the top surface of the inner cavity 2 554. When the hydraulic push rod 3 555 pushes the output end upward, it can drive the movable plate 553 to move upward. Two through grooves 556 are provided on the right side of the inner cavity 1 552, which can connect with the outer... The movable plate 553 has a connecting plate 557 on the right side corresponding to the through groove 556. The two sets of connecting plates 557 extend to the right side of the fixed block 551 through the through groove 556 and are connected to a set of inner buckle plates 558. When the movable plate 553 moves up and down, the connecting plate 557 can drive the inner buckle plates 558 to move synchronously. This allows the extension panel 54 to move up and down through the protrusion 542, which is beneficial for pressing and fixing the bottom surface of the carriage. This can effectively prevent gaps from forming between the bottom surface of the carriage and the bottom surface of the extension panel 54 due to the accumulation of goods during loading, thus affecting the fixing effect on the vehicle. When the inner buckle plate 558 is at the bottom, it is flush with the inner side of the inner groove 511, ensuring that the protrusion 542 on the side of the extension panel 54 can move smoothly between the inner buckle plate 558 and the inner groove 511, avoiding jamming and improving the smoothness of the sliding process.

[0052] Specifically, the hydraulic push rod 3 555 inside the fixed block 551 can push the moving plate 553 to rise and fall, and drive the connecting plate 2 557 and the inner buckle plate 558 to move synchronously. The height of the inner buckle plate 558 and the extension panel 54 can be precisely adjusted, which can achieve the downward pressing and fixing of the bottom surface of the carriage to prevent the vehicle from slipping and improve the safety during loading and unloading.

[0053] This invention provides a safe and stable hydraulic loading and unloading platform. Two sets of limiting mechanisms 2, located at the left and right bottom ends of the base box 1, enhance the securing effect on loading and unloading vehicles. Each limiting mechanism 2 includes a recovery trough 21, a drive motor 22, a lead screw 23, an extension cylinder 1 24, an extension cylinder 25, and a mounting bracket 26. The drive motor 22 drives the lead screw 23 to rotate, causing the extension cylinders 1 24 and 25 to move back and forth, closer to the wheels, adapting to different vehicle models. Furthermore, the extension cylinder 25 can rotate up and down via a horizontal hinge with the extension cylinder 1 24, adapting to parking positions with different slopes. It also features anti-slip textures. The card holder 26 fits against the wheels to limit the vehicle's movement, effectively preventing it from slipping and significantly improving safety during loading and unloading. An extension mechanism 5, located at the front end of the loading platform 4, includes a bottom groove 51, a second hydraulic push rod 52, a push plate 53, an extension panel 54, and a lifting mechanism 55. The second hydraulic push rod 52 can push the extension panel 54 forward, extending it into the cargo compartment and forming a connection between the cargo compartment and the loading / unloading platform. The anti-slip texture on the surface increases friction, preventing slippage during cargo handling and facilitating cargo transport. Simultaneously, the push plate 53 is connected to the extension panel 54 via a connecting plate 541. 4. The dovetail-shaped protrusion and dovetail groove cooperate to prevent accidental separation and achieve a sliding effect. The lifting mechanism 55 includes a fixed block 551, inner cavity one 552, moving plate 553, inner cavity two 554, hydraulic push rod three 555, through groove 556, connecting plate two 557, and inner buckle plate 558. The hydraulic push rod three 555 can drive the inner buckle plate 558 to push the extension panel 54 down onto the bottom of the carriage, avoiding the carriage from shifting due to cargo accumulation. A gap is created between the extension panel 54 and the extension panel 555, forming a double fixing system with the limiting mechanism 2, achieving double restriction of the vehicle, which not only optimizes the convenience of cargo transportation. It also improves safety during loading and unloading; through the hydraulic lifting module 3 set at the top of the base box 1, the loading platform 4, and the tail plate 6 connected to the rear end of the loading platform 4, the scissor hydraulic lifting module 3 can drive the loading platform 4 to move up and down, realize height adjustment, adapt to different vehicle models, and optimize the problem of poor adaptability of traditional loading and unloading platforms. The two sets of tail plates 6 are hinged to the loading platform 4. The front tail plate 6 can rotate synchronously with the height adjustment of the loading platform 4, while the rear tail plate 6 remains in contact with the ground, creating a smooth cargo transportation channel and forming a transportation ramp, which is conducive to the up and down handling of goods and greatly improves loading and unloading efficiency and ease of operation.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A safe and stable hydraulic loading and unloading platform, characterized in that: Includes a base box (1), with a set of limiting mechanisms (2) provided at the bottom left and bottom right of the base box (1), a hydraulic lifting module (3) provided at the bottom of the base box (1), a set of loading platforms (4) connected to the top of the hydraulic lifting module (3), an extension mechanism (5) provided at the bottom front end of the loading platform (4), and two sets of tail plates (6) connected to the rear end of the loading platform (4). The components of the limiting mechanism (2) are all the same. The limiting mechanism (2) on the right end includes a recycling trough (21), a drive motor (22), a lead screw (23), an extension cylinder one (24), an extension cylinder two (25), and a card seat (26). A set of recycling troughs (21) is opened at the bottom right end of the bottom box (1). A set of lead screws (23) is connected to the rear end of the recycling trough (21) through the drive motor (22). A set of extension cylinders (24) is sleeved on the outside of the lead screws (23). A set of extension cylinders (25) is connected to the front end of the extension cylinders (24). A set of card seats (26) is hinged to the front end of the extension cylinders (25). The inner end of the extension cylinder 2 (25) is provided with an inner groove (251), and the rear end of the inner groove (251) is provided with a set of hydraulic push rods 1 (252). The front end of the output end of the hydraulic push rods 1 (252) is connected to a set of linkage seats (253). The front middle end of the linkage seat (253) is provided with a linkage groove (254). A set of linkage plates (255) is connected in the linkage groove (254). The other end of the linkage plate (255) is connected to the card seat (26). The extension mechanism (5) includes a bottom groove (51), a second hydraulic push rod (52), a push plate (53), an extension panel (54), and a lifting mechanism (55). The bottom front end of the loading platform (4) is provided with a bottom groove (51). Both the left and right ends of the bottom groove (51) are provided with a set of inner grooves (511). The rear end of the bottom groove (51) is provided with a set of second hydraulic push rods (52). The front end of the output end of the second hydraulic push rod (52) is connected to a set of push plates (53). Both the left and right sides of the push plate (53) are provided with a protrusion (531) corresponding to the inner groove (511). The front end of the push plate (53) is connected to a set of extension panels (54). Both the front left and right ends of the loading platform (4) are provided with a set of lifting mechanisms (55). The rear end of the extension panel (54) is connected to the front end of the push plate (53) via a connecting plate (541). The left and right sides of the extension panel (54) are provided with protrusions (542) corresponding to the inner grooves (511). The push plate (53) has at least two sets of dovetail protrusions at equal intervals at the front and middle ends, and the connecting plate (541) has a corresponding dovetail groove at the rear end, and slides up and down along the dovetail protrusions.

2. The safe and stable hydraulic loading and unloading platform according to claim 1, characterized in that: The components of the lifting mechanism (55) are all the same. The lifting mechanism (55) on the left end includes a fixed block (551), an inner cavity one (552), a moving plate (553), an inner cavity two (554), a hydraulic push rod three (555), a through groove (556), a connecting plate two (557), and an inner buckle plate (558). The front left end of the loading platform (4) is provided with a set of fixed blocks (551). The inner end of the fixed block (551) is provided with a set of inner cavities one (552). The inner cavity one (552) is provided with a set of moving plates (553). The middle of the moving plate (553) is provided with a set of inner cavities one (552). There is a set of inner cavity two (554), and the inner bottom of the inner cavity one (552) is provided with a hydraulic push rod three (555) corresponding to the inner cavity two (554). The top end of the output end of the hydraulic push rod three (555) is connected to the inner top surface of the inner cavity two (554). There are two sets of through grooves (556) on the right side of the inner cavity one (552). The right side of the moving plate (553) is provided with a connecting plate two (557) corresponding to the through groove (556). The two sets of connecting plates two (557) extend to the right side of the fixed block (551) through the through groove (556) and are connected to a set of inner buckle plates (558).

3. The safe and stable hydraulic loading and unloading platform according to claim 2, characterized in that: When the inner buckle plate (558) is at the bottom, it is flush with and connected to the inner side of the inner groove (511).

4. The safe and stable hydraulic loading and unloading platform according to claim 1, characterized in that: The top surfaces of the extension panel (54), the cargo platform (4), and the tail plate (6) are all provided with anti-slip textures.

5. The safe and stable hydraulic loading and unloading platform according to claim 1, characterized in that: Both the bottom surfaces of the first extension cylinder (24) and the second extension cylinder (25) are provided with rollers, and the bottom end of the recycling trough (21) is provided with recycling grooves corresponding to the rollers.

6. The safe and stable hydraulic loading and unloading platform according to claim 5, characterized in that: The first extension tube (24) and the second extension tube (25) are hinged together in the horizontal direction.

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