Safe and stable hydraulic loading and unloading vehicle platform

Abstract

The invention discloses a safe and stable hydraulic loading and unloading vehicle platform, and relates to the technical field of hydraulic loading and unloading vehicle platforms, the safe and stable hydraulic loading and unloading vehicle platform comprises a bottom box, a limiting mechanism, a hydraulic lifting module, a loading platform, an extension mechanism and a tail plate; the two limiting mechanisms are arranged at the left bottom end and the right bottom end in the bottom box correspondingly, each limiting mechanism comprises a recycling groove, a driving motor, a lead screw, a first extending cylinder, a second extending cylinder, a clamping base and other assemblies, under mutual cooperation, rear wheels of an unloading vehicle can be limited and fixed, the situation that in the unloading process, due to the influence of the weight or the gradient, the vehicle slides, and the unloading efficiency is improved can be effectively improved. And the inner end of the bottom box is connected with a carrying platform through a hydraulic lifting module, an extension mechanism is arranged at the front bottom end of the carrying platform, and the extension mechanism can extend to the inner end of the compartment to press and fix the inner bottom surface of the compartment, so that the height difference caused by weight change is prevented, secondary protection is formed, and the stability during unloading is guaranteed.

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, 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 the 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 platform has the problem of single structure, lacks 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 suitable for the vehicle compartment, 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 vehicle, so that during loading and unloading of goods, the vehicle may slide due to weight change and slope, and it 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 set 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 set of load carrying 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 carrying platform, and two sets of tail plates are connected to the rear end of the load carrying platform. The components of the limiting mechanism are the same, the limiting mechanism at the right end comprises a recovery groove, a driving motor, a lead screw, an extension cylinder one, an extension cylinder two and a clamping seat, a set of recovery grooves are formed at the right bottom end in the bottom box, a set of lead screws are connected to the inner rear end of the recovery grooves through the driving motor, a set of extension cylinder ones are sleeved on the outer side of the lead screws, a set of extension cylinder twos are connected to the front end of the extension cylinder one, and a set of clamping seats are hinged to the front end of the extension cylinder two.

[0006] By adopting the above technical scheme, the basic structure of the hydraulic loading and unloading platform is constructed, the bottom box provides an installation carrier, the limiting mechanism limits the vehicle wheels, the hydraulic lifting module drives the load carrying platform to complete the lifting action, the extension mechanism is connected with the vehicle compartment, which is conducive to the transportation of goods, the tail plate facilitates the loading and unloading of goods, the overall structure layout is reasonable, and the lifting, limiting and extension functions of the loading and unloading platform can be realized, thereby improving the convenience and stability of loading and unloading operation.

[0007] 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 middle front 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.

[0008] By adopting the above technical scheme, the linkage seat is pushed forward or backward by the hydraulic push rod one in the extension cylinder two for recovery, 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.

[0009] Preferably, the extension mechanism comprises a bottom groove, a hydraulic push rod two, a push plate, an extension panel and a lifting mechanism, the bottom front end of the object carrying 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 object carrying platform are provided with a group of lifting mechanisms.

[0010] By adopting the above technical scheme, the push plate is moved by the hydraulic push rod two in the bottom groove, which can drive the extension panel to extend or retract, and after the extension panel extends, it can be adjusted up and down with the lifting mechanism, and after extending into the vehicle compartment, the bottom surface of the vehicle compartment can be pressed down, which can further fix the vehicle, which is not only beneficial to the up and down transportation of goods, but also can improve the safety and stability during loading and unloading.

[0011] 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.

[0012] By adopting the above 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, which can avoid deviation and effectively improve the stability of the extension panel during movement.

[0013] 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.

[0014] 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.

[0015] Preferably, when the inner buckle plate is located at the bottom end, it is flush with the inner side of the inner side groove.

[0016] 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.

[0017] Preferably, a plurality of dovetail type protrusions are arranged at the front middle end of the push plate at equal intervals, and a dovetail groove is arranged at the rear end of the connecting plate one and slides up and down along the dovetail type protrusion.

[0018] By adopting the above technical scheme, due to the cooperation of the dovetail type protrusion and the dovetail groove, 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 protrusion, adapt to the pressing operation of the inner bottom surface of the carriage, prevent mutual interference between components, and enhance the use flexibility.

[0019] Preferably, the extension panel, the object carrying platform and the tail plate top surface are all provided with anti-skid lines.

[0020] 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.

[0021] 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.

[0022] 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.

[0023] Preferably, the extension cylinder I and the extension cylinder II are connected in a horizontal direction.

[0024] By adopting the technical scheme, the up-and-down angle can be realized, the vehicle parking position of different slopes can be adapted, and the use flexibility is effectively improved.

[0025] Compared with the prior art, the present application has the following advantages: 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 includes 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 slope parking positions, and cooperate with the clamping seat with anti-skid lines to fit the wheels and limit the vehicles, which can effectively prevent the vehicles from rolling and greatly improve the safety during loading and unloading. 2. The extension mechanism arranged at the bottom front end of the loading platform includes 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 a connecting plate I, the dovetail type protrusion and the dovetail groove cooperate to prevent accidental separation of the two and realize the up-and-down sliding effect. The lifting mechanism includes 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 vehicles, which not only optimizes the convenience of goods transportation, but also improves the safety during loading and unloading. 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. The problem of poor adaptability of traditional loading and unloading platforms is optimized. The two groups of tail plates are hinged to the loading platform. The front end tail plate can rotate synchronously with the height adjustment of the loading platform, and the rear end tail plate remains in contact with the ground to build a smooth cargo transportation channel to form a transportation ramp, which is conducive to the upward and downward handling of goods and greatly improves the loading and unloading efficiency and operation convenience. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The figure is a structural diagram of the present application; Figure 2 The figure is a right view structural diagram of the limiting mechanism of the present application; Figure 3 The figure is a structural diagram of the inner rear end of the recycling tank of the present application; Figure 4 The figure is a top view structural diagram of the clamping seat of the present application; Figure 5 The figure is a right view structural diagram of the inside of the extension mechanism of the present application; Figure 6 The figure is a partial structural diagram of the extension panel of the present application; Figure 7 The figure is a partial top view structural diagram of the push plate and the connecting plate of the present application; Figure 8 The figure is a structural diagram of the lifting mechanism of the present application; Figure 9 The figure is a front view structural diagram of the inside of the lifting mechanism of the present application.

[0027] In the figure: bottom box-1, limiting mechanism-2, hydraulic lifting module-3, loading platform-4, extension mechanism-5, tail plate-6, recycling tank-21, drive motor-22, screw rod-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 DESCRIPTION

[0028] In order to further explain the technical scheme of the present application, the following specific embodiments are described in detail.

[0029] Please refer toFigure 1 The application provides a safe and stable hydraulic loading and unloading platform, which comprises a bottom box 1, a group of limiting mechanisms 2 are arranged at the left bottom end and the right bottom end in the bottom box 1 and can limit and fix the loading and unloading vehicles, a shearing type hydraulic lifting module 3 is arranged at the inner end of the bottom box 1, a group of load platforms 4 are connected to the top end of the shearing type hydraulic lifting module 3, the load platforms 4 can be driven by the shearing type hydraulic lifting module 3 to move up and down, the vehicles with different heights can be adapted, an extension mechanism 5 is arranged at the bottom front end of the load platform 4, the extension mechanism 5 can extend to the inner bottom surface of the vehicle compartment and is fixed by being pressed down, the double limitation can be formed by cooperating with the limiting mechanisms 2, the vehicle movement caused by slipping can be effectively prevented, the safety and stability during loading and unloading are improved, the rear end of the load platform 4 is hingedly connected with two groups of tail plates 6, when the height of the load platform 4 is adjusted, the connection between the load platform 4 and the ground can be realized by rotating the two groups of tail plates 6, and the loading and unloading of goods is facilitated.

[0030] Specifically, the basic structure of the hydraulic loading and unloading platform is constructed, the bottom box 1 is used to provide an installation carrier, the limiting mechanisms 2 are used to limit the vehicle wheels, the hydraulic lifting module 3 is used to drive the load platform 4 to complete the lifting action, the extension mechanism 5 is used to connect with the vehicle compartment, and the loading and unloading of goods is facilitated, the tail plates 6 are used to facilitate the loading and unloading of goods, 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 the loading and unloading operation are improved.

[0031] Please refer to Figures 1-4, the left and right groups of limiting mechanisms 2 are mirror set, and the assemblies are the same. The right end limiting mechanism 2 comprises a recovery groove 21, a driving motor 22, a lead screw 23, an extension cylinder one 24, an extension cylinder two 25 and a clamping seat 26. A group of recovery grooves 21 are formed in the right bottom end of the bottom box 1. A group of lead screws 23 are connected to the rear end of the recovery groove 21 through the driving motor 22. The driving shaft of the driving motor 22 can drive the lead screw 23 to rotate. A group of extension cylinder ones 24 are sleeved outside the lead screw 23. The inner side of the extension cylinder one 24 is provided with internal threads corresponding to the lead screw 23. When the lead screw 23 rotates, the extension cylinder one 24 can be driven to move forward and backward through the internal threads. The front end of the extension cylinder one 24 is hingedly connected to a group of extension cylinder twos 25. The extension cylinder one 24 and the extension cylinder two 25 are hingedly connected along the horizontal direction, which can realize the angle of up and down, adapt to the parking position of vehicles with different slopes, effectively improve the use flexibility, and further, the bottom surfaces of the extension cylinder one 24 and the extension cylinder two 25 are provided with rollers, the bottom end of the recovery groove 21 is provided with recovery grooves corresponding to the rollers, the rollers can support the extension cylinder one 24 and the extension cylinder two 25, avoid the front end from falling due to overextension, and reduce the resistance when the extension cylinder one 24 and the extension cylinder two 25 move, so that the extension and retraction action is more smooth and convenient. At the same time, the rollers can be retracted into the recovery grooves, avoiding interference between the assemblies when the extension cylinder one 24 is retracted. The front end of the extension cylinder two 25 is hingedly connected to a group of clamping seats 26. The rear end of the clamping seat 26 is provided with an inclined surface, and the inclined surface is provided with anti-skid lines, which can be fitted to the front bottom end of the wheel to limit and fix the wheel, prevent the vehicle from rolling, and the right rear end of the clamping seat 26 is hingedly connected to the front left end of the extension cylinder two 25. The clamping seat 26 can be fitted to the right side and the front end surface of the extension cylinder two 25 by rotating to form a straight line.

[0032] Specifically, the recovery groove 21 in the bottom box 1 can realize the recovery of the extension cylinder one 24, reduce the occupation of external space, the driving motor 22 can drive the lead screw 23 to rotate, drive the extension cylinder one 24 sleeved outside the lead screw 23 to move forward and backward, and further drive the extension cylinder two 25 to synchronously extend and retract, which can adapt to vehicles with different sizes and cooperate with the rotation of the clamping seat 26 to realize the simultaneous fixation of the rear two wheels of the vehicle, prevent the vehicle from rolling, and improve the safety during loading and unloading goods.

[0033] Please refer to Figure 2 and Figure 4 The inner end of the extension cylinder two 25 is provided with an inner groove 251. A group of hydraulic push rods one 252 are installed in the inner groove 251. A group of linkage seats 253 are connected to the front end of the output end of the hydraulic push rod one 252. A linkage groove 254 is formed in the front middle end of the linkage seat 253. A group of linkage plates 255 are hingedly connected in the linkage groove 254. The other end of the linkage plate 255 is hingedly connected to the right front end of the clamping seat 26. The output end of the hydraulic push rod one 252 can drive the linkage plate 255 to move synchronously, and the clamping seat 26 is driven to rotate by the linkage plate 255, so as to realize the limiting or releasing of the wheel.

[0034] Specifically, the hydraulic push rod one 252 in the extension cylinder two 25 pushes the linkage seat 253 to move forward or backward, so that the linkage plate 255 adjusts the rotation angle of the clamping seat 26 to clamp or release the wheels, and the position and angle of the clamping seat 26 can be flexibly adjusted to prevent the vehicle from rolling, adapt to different working requirements, and improve the working safety.

[0035] Please refer to Figure 1 With Figure 5 , the extension mechanism 5 comprises a bottom groove 51, a hydraulic push rod two 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 the bottom groove 51. The left and right ends of the bottom groove 51 are both provided with a group of inner grooves 511. A group of hydraulic push rod two 52 is installed at the rear end of the bottom groove 51. The output end of the hydraulic push rod two 52 is fixedly connected with a group of push plates 53. The left and right sides of the push plate 53 are both provided with protrusions one 531 corresponding to the inner grooves 511. When the hydraulic push rod two 52 pushes or recovers the output end, it can drive the push plate 53 to move forward and backward in the bottom groove 51 along the inner grooves 511. The front end of the push plate 53 is slidably connected with a group of extension panels 54, which can drive the extension panels 54 to move forward and backward synchronously, which is beneficial to extend the extension panels 54 into the vehicle compartment. The extension panel 54, the loading platform 4 and the top surface of the tail plate 6 are all provided with anti-skid lines, which can effectively increase the friction between the goods and the platform surface, prevent the goods from slipping and falling during loading and unloading, improve the operation safety, and the front, left and right ends of the loading platform 4 are all provided with a group of lifting mechanisms 55.

[0036] Specifically, the hydraulic push rod two 52 in the bottom groove 51 pushes the push plate 53 to move, which can drive the extension panel 54 to extend or retract, and after the extension panel 54 extends, it can be adjusted up and down with the lifting mechanism 55. After extending into the vehicle compartment, it can press down the bottom surface of the vehicle compartment, which can further limit and fix the vehicle. Not only is it beneficial to the upward and downward transportation of goods, but also can improve the safety and stability during loading and unloading.

[0037] Please refer to Figures 6-7 , the rear end of the extension panel 54 is connected with the front end of the push plate 53 through the connecting plate one 541. The front and middle ends of the push plate 53 are equally spaced and provided with not less than two groups of dovetail type protrusions. The rear end of the connecting plate one 541 is provided with a dovetail groove opposite to it, and can slide up and down along the dovetail type protrusions. Due to the cooperation of the dovetail type protrusions and the dovetail groove, a mortise and tenon structure is formed, which can prevent the push plate 53 and the extension panel 54 from separating. The extension panel 54 can slide up and down along the dovetail type protrusions to adapt to the pressing operation of the bottom surface of the vehicle compartment, prevent mutual interference between components, enhance the use flexibility, and improve the moving stability of the extension panel 54 in the bottom groove 51 through the protrusions two 542.

[0038] Specifically, the connecting plate 541 is used to connect the push plate 53 and the extension panel 54, and the convex strip 542 is matched with the inner side groove 511, so that the extension panel 54 can move along a fixed track during movement, avoiding deviation and effectively improving the stability of the extension panel 54 during movement.

[0039] Please refer to Figures 8-9 The left and right groups of lifting mechanisms 55 are mirror images and have the same components. The left end lifting mechanism 55 includes a fixed block 551, an inner cavity 552, a moving plate 553, an inner cavity 554, a hydraulic push rod 555, a through groove 556, a connecting plate 557, and an inner buckle plate 558. The object platform 4 is fixedly connected with a group of fixed blocks 551 at the front left end. A group of inner cavities 552 are formed in the inner end of the fixed block 551. A group of moving plates 553 are slidably connected in the inner cavities 552. A group of inner cavities 554 are formed in the inner middle end of the moving plate 553. A group of hydraulic push rods 555 corresponding to the inner cavities 554 are installed at the inner bottom middle end of the inner cavities 552. The output end top of the hydraulic push rod 555 is connected with the inner top of the inner cavity 554. When the hydraulic push rod 555 pushes the output end upward, the moving plate 553 is driven to move upward. Two groups of through grooves 556 are arranged on the right side of the inner cavity 552 and can be connected with the outside. The moving plate 553 is provided with a connecting plate 557 corresponding to the through groove 556. Two groups of connecting plates 557 are extended to the right side of the fixed block 551 through the through groove 556 and are connected with a group of inner buckle plates 558. When the moving plate 553 moves up and down, the inner buckle plate 558 is driven to move synchronously by the connecting plate 557, so that the extension panel 54 can be moved up and down by the convex strip 542, which is beneficial to the downward fixation of the inner bottom surface of the vehicle compartment and can effectively prevent the gap between the inner bottom surface of the vehicle compartment and the bottom surface of the extension panel 54 due to the accumulation of goods during loading, thereby affecting the fixing effect of the vehicle. When the inner buckle plate 558 is located at the bottom end, it is flush with the inner side of the inner side groove 511, so that the convex strip 542 on the side of the extension panel 54 can smoothly move between the inner buckle plate 558 and the inner side groove 511, avoiding jamming and improving the smoothness of the sliding process.

[0040] Specifically, the hydraulic push rod 555 in the fixed block 551 can drive the moving plate 553 to lift and synchronously move the connecting plate 557 and the inner buckle plate 558, so as to accurately adjust the height of the inner buckle plate 558 and the extension panel 54, realize the downward fixation of the inner bottom surface of the vehicle compartment, prevent the vehicle from sliding, and improve the safety during loading and unloading.

[0041] The application provides a safe and stable hydraulic loading and unloading platform, two groups of limiting mechanisms 2 are arranged at the left and right bottom ends in the bottom box 1, the fixing effect on the loading and unloading vehicle is improved, the limiting mechanism 2 comprises a recovery groove 21, a driving motor 22, a lead screw 23, an extension cylinder one 24, an extension cylinder two 25 and a clamping seat 26, the driving motor 22 drives the lead screw 23 to rotate, drives the extension cylinder one 24 and the extension cylinder two 25 to move forward and backward, approaches the wheel position, adapts to different vehicle models, and the extension cylinder two 25 can also rotate up and down through the horizontal hinge with the extension cylinder one 24, can adapt to different parking positions of different slopes, and the clamping seat 26 with anti-skid lines is matched to adhere to the wheel, the vehicle is limited, the vehicle can be effectively prevented from sliding, and the safety during loading and unloading is greatly improved; the extension mechanism 5 is arranged at the bottom front end of the loading platform 4, the extension mechanism 5 comprises a bottom groove 51, a hydraulic push rod two 52, a push plate 53, an extension panel 54 and a lifting mechanism 55, the hydraulic push rod two 52 can push the extension panel 54 forward, so that the extension panel 54 extends into the vehicle compartment, forms the connection between the vehicle compartment and the loading and unloading platform, and the anti-skid lines on the surface can increase the friction force, prevent the goods from slipping during carrying, and are favorable for the carrying of the goods, meanwhile, the push plate 53 is connected with the extension panel 54 through a connecting plate one 541, the dovetail type protrusion and the dovetail groove are matched to prevent the two from accidentally separating, and the up and down sliding effect is realized, the lifting mechanism 55 comprises 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 hydraulic push rod three 555 can drive the inner buckle plate 558 to press down the bottom surface of the vehicle compartment, avoids the vehicle compartment from moving down due to the accumulation of goods, a gap is generated between the extension panel 54, and a double fixing system is formed with the limiting mechanism 2, the vehicle is doubly limited, not only the convenience of goods transportation is optimized, but also the safety during loading and unloading is improved; the hydraulic lifting module 3 is arranged at the top end of the bottom box 1, the loading platform 4 and the tail plate 6 connected to the rear end of the loading platform 4, the scissor type hydraulic lifting module 3 can drive the loading platform 4 to move up and down, realizes height adjustment, adapts to different vehicle models, optimizes the poor adaptability of the traditional loading and unloading platform, the two groups of tail plates 6 are hinged with the loading platform 4, the front end tail plate 6 can rotate synchronously with the height adjustment of the loading platform 4, and the rear end tail plate 6 remains adhered to the ground, builds a smooth goods transportation channel, forms a transportation ramp, is favorable for the up and down carrying of the goods, and greatly improves the loading and unloading efficiency and operation convenience.

[0042] The above only describes the preferred examples of the application and is not used to limit the application, although the application is described in detail with reference to the foregoing examples, those skilled in the art can still modify the technical solutions recorded in the foregoing examples or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

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 provided 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).

2. The safe and stable hydraulic loading and unloading platform according to claim 1, characterized in that: The inner end of the extension cylinder (25) is provided with an inner groove (251). The rear end of the inner groove (251) is provided with a set of hydraulic push rods (252). The front end of the output end of the hydraulic push rods (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).

3. The safe and stable hydraulic loading and unloading platform according to claim 1, characterized in that: 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).

4. The safe and stable hydraulic loading and unloading platform according to claim 3, characterized in that: 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).

5. The safe and stable hydraulic loading and unloading platform according to claim 3, 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).

6. The safe and stable hydraulic loading and unloading platform according to claim 5, 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).

7. The safe and stable hydraulic loading and unloading platform according to claim 4, characterized in that: 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.

8. The safe and stable hydraulic loading and unloading platform according to claim 3, 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.

9. 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.

10. The safe and stable hydraulic loading and unloading platform according to claim 9, 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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