A sliding forklift loading machine

Abstract

This invention provides a sliding forklift loading and unloading machine, including a base. The base has an alignment platform, and the alignment platform has a cargo loading and unloading platform. Between the alignment platform and the base are a lifting mechanism for vertical adjustment relative to the base, a translation mechanism for horizontal adjustment, and a rotation mechanism for angle adjustment. The cargo loading and unloading platform has multiple open-fronted slides arranged side-by-side, with lifting forks positioned within corresponding slides. A translation mechanism on the cargo loading and unloading platform controls the movement of the lifting forks. By manipulating the translation mechanism, the lifting forks reciprocate along the slides, extending or retracting from the open front of the slides, thereby transferring all cargo placed on the lifting forks through the rear door of the truck bed into the truck bed, completing a single-load loading or unloading operation. The lifting, translation, and rotation mechanisms ensure the alignment of the cargo loading and unloading platform, significantly improving loading and unloading efficiency and providing reliable technical support for modern, automated logistics.

Description

Technical Field

[0001] This invention relates to a loading and unloading machine, particularly a sliding fork loading and unloading machine, and belongs to the field of mechanical design and manufacturing technology. Background Technology

[0002] With the continuous development of the logistics industry, automated logistics equipment has made significant progress, and traditional manual handling has been gradually replaced by mechanical handling. For goods susceptible to moisture, box trucks are widely used for transportation. Since most box trucks only have cargo access at the rear and are relatively long, current technology primarily relies on a combination of manual labor and forklifts for loading and unloading heavy goods. This involves manually moving goods from the interior of the truck bed away from the cargo access in batches, followed by forklift unloading. This unloading method requires repeated manual movement within the truck bed, which is not only inefficient and time-consuming but also necessitates the installation of ramps within the truck bed to smoothly move pallets and goods, undoubtedly increasing operational complexity. Furthermore, manual handling of heavy goods is extremely difficult, requiring a large amount of manpower and increasing the labor burden on enterprises. Therefore, it is necessary to improve existing technology. Summary of the Invention

[0003] To address the problems of low loading and unloading efficiency, high labor and time costs, and low automation in existing box trucks, this invention provides a sliding fork loading and unloading machine.

[0004] This invention is achieved through the following technical solution: a sliding forklift loading and unloading machine, comprising a base, characterized in that an alignment platform is provided on the base, and a cargo loading and unloading platform is provided on the alignment platform, wherein:

[0005] The alignment platform includes an alignment bracket, and a lifting mechanism for adjusting the alignment bracket vertically relative to the base and a first translation mechanism for adjusting horizontally are provided between the alignment bracket and the base. The alignment bracket is provided with a rotation mechanism for adjusting the angle of the cargo loading and unloading platform on the alignment bracket relative to the alignment bracket.

[0006] The cargo loading and unloading platform includes a frame, multiple open-fronted slides arranged side by side on the frame, lifting forks respectively located in the corresponding slides, a second translation mechanism on the frame for manipulating the movement of the lifting forks, and a cargo conveying mechanism on the frame and located on the slides.

[0007] This allows the lifting forks to reciprocate along the slide rail by manipulating the second translation mechanism, extending or retracting from the opening at the front of the slide rail. This enables the entire load placed on the lifting forks to be transferred through the rear door of the truck bed into the truck bed, completing a one-time full-truck loading. Alternatively, all the loads in the truck bed can be forked onto the lifting forks and then removed, completing a one-time full-truck unloading. The vertical adjustment of the alignment bracket is achieved through the lifting mechanism, the horizontal adjustment through the first translation mechanism, and the angle adjustment through the rotation mechanism. This ensures the alignment of the loading and unloading platform, solving the inconvenience caused by frequent adjustments to the loading and unloading position.

[0008] The rotation mechanism of the alignment platform includes: an annular track located at the top center of the alignment support; multiple arc-shaped tracks symmetrically arranged on both sides of the annular track and evenly spaced from near to far; annular wheel frames that move in an annular motion on the annular track; and corresponding arc-shaped wheel frames that move in an arc on each of the multiple arc-shaped tracks; thereby performing all-round alignment of the goods or mechanisms loaded on the alignment support in terms of height, horizontal position, and rotation angle.

[0009] Furthermore, the bottom of the annular wheel frame and the arc-shaped wheel frame are respectively provided with multiple movable rollers that are matched with the annular track and the arc-shaped track. The top of the annular wheel frame and the arc-shaped wheel frame are connected to the goods or the mechanism. The arc-shaped wheel frame is connected to the rotary drive assembly. The center of the annular track is vertically provided with a central rotating shaft.

[0010] The rotary drive assembly includes: a first power unit mounted on the alignment bracket, the main shaft of the first power unit being connected to the input shaft of a transmission box mounted on the top of the alignment bracket, the output shaft of the transmission box extending vertically upward and being connected to a drive gear, and the drive gear meshing with a corresponding arc-shaped rack mounted on an arc-shaped wheel frame;

[0011] This allows the goods or mechanisms at the top to rotate or swing around the central axis at a certain angle, thus completing the angle adjustment.

[0012] Furthermore, the movable roller is a tapered roller with a small diameter at one end facing the central rotating shaft and a large diameter at the other end. The tapered roller is rotatably connected to a bearing with a seat located at the bottom of the annular wheel frame and the arc-shaped wheel frame via a horizontally set wheel axle, so as to ensure that the alignment bracket can rotate smoothly under heavy load.

[0013] The lifting mechanism of the alignment platform includes: multiple horizontal support beams spaced apart on the base; multiple lifting components respectively disposed between the bottom ends of each horizontal support beam and the base; and the multiple lifting components connected to a power transmission component disposed on the base; wherein:

[0014] Each lifting assembly includes: a housing on the base, a worm gear horizontally disposed within the housing, the upper and lower ends of the worm gear shaft extending outward after passing through the housing, the upper extension end being engaged with a bearing with a seat at the bottom of the corresponding transverse horizontal support beam, the lower extension end being rotatably connected to a bearing with a seat on the base, and the worm shaft extending horizontally.

[0015] The power transmission assembly includes: a second power unit mounted on the base, the main shaft of which is connected to the input shaft of the first gearbox, the front and rear output shafts of the first gearbox being connected to the corresponding input shafts of the second gearbox on the front and rear sides of the base, and the left and right output shafts of the second gearbox being connected to the worm shafts of multiple lifting assemblies on the same side.

[0016] So that the worm shaft can be driven to rotate through the second power unit, the first gearbox, and the second gearbox, and then the multiple transverse horizontal support beams can be driven to rise and fall synchronously through the worm wheel axle, thereby adjusting the vertical direction of the alignment bracket on the transverse horizontal support beam.

[0017] Furthermore, the lifting assembly is a conventional power cylinder lifting mechanism or a lead screw lifting mechanism.

[0018] The first translation mechanism of the alignment platform includes: a translation component disposed between the base and the alignment bracket, and a translation drive component connected to the translation component, wherein:

[0019] The translation component includes: horizontal slide rails respectively installed on the top surface of multiple horizontal support beams of the base, multiple translation sliders installed on the corresponding horizontal slide rails, and the multiple translation sliders connected to the bottom of the alignment bracket.

[0020] The translation drive assembly includes: multiple sliding parts located on the base, the top of the multiple sliding parts being connected to the bottom of the alignment bracket and the bottom being suspended, each sliding part being provided with a vertical slide rail, a slider on the vertical slide rail, and a horizontal shaft with a roller at its front end on the slider, the sliding parts being connected to a third power unit through a transmission assembly, the roller being placed in a horizontal limiting slide groove, the horizontal limiting slide groove being fixed to the base by the bracket, so that the sliding parts and the roller on them can move along the horizontal limiting slide groove.

[0021] Furthermore, the transmission assembly includes: a translation drive sprocket and a translation driven sprocket located on the bases on both sides of the sliding member. A transmission chain is wound around the translation drive sprocket and the translation driven sprocket, and the transmission chain is connected to the slider on the sliding member. The axle of the translation drive sprocket is connected to the main shaft of the third power machine on the base. This is so that, driven by the third power machine, the transmission chain is moved by the translation drive sprocket and the translation driven sprocket, thereby driving the sliding member and the alignment bracket to move horizontally, realizing the horizontal adjustment and alignment of the alignment bracket. When the alignment bracket rises or falls with the lifting mechanism, only the sliding member rises or falls synchronously, while the slider and the chain do not rise or fall accordingly.

[0022] Furthermore, the transmission component can also be other transmission mechanisms in the prior art, such as transmission pulleys, transmission belts, power machines; or lead screw drives, or power cylinder drives.

[0023] The base is formed by two longitudinal upright plates and two transverse upright plates to form a first horizontal rectangular frame. Two longitudinal beams are symmetrically arranged inside the first horizontal rectangular frame, and multiple transverse beams are arranged between the two longitudinal beams. Several reinforcing plates are spaced apart between the longitudinal upright plates, transverse upright plates and adjacent longitudinal and transverse beams, so as to support the alignment bracket on the base and facilitate the installation of the lifting mechanism and the first translation mechanism.

[0024] The alignment support of the alignment platform consists of two longitudinal uprights and two transverse uprights forming a second horizontal rectangular frame. The second horizontal rectangular frame contains multiple longitudinal and transverse connecting beams arranged in a crisscross pattern.

[0025] The frame of the cargo loading and unloading platform is a horizontal rectangular frame with an open front end and a closed rear end. The horizontal rectangular frame consists of multiple spaced longitudinal beams and crossbeams located at the rear ends of the multiple longitudinal beams. Multiple transverse connecting rods are spaced along the bottom of the horizontal rectangular frame from one end of the multiple longitudinal beams to the other end, so as to fix and install slide rails, lifting forks, various transmission components, drive equipment, and bear cargo and pallets through the frame.

[0026] The lifting fork of the cargo loading and unloading platform includes a lower moving fork, an expansion lifting mechanism, an upper moving fork, and a second translation mechanism. The lower moving fork is movably sleeved on the upper moving fork, forming a first accommodating space between the upper and lower moving forks. The expansion lifting mechanism is located in the first accommodating space and drives the upper moving fork to rise and fall vertically along the lower moving fork. A second accommodating space is formed between the lower moving fork and the slide rail. The second translation mechanism is located in the second accommodating space and drives the upper and lower moving forks to translate along the slide rail.

[0027] In order to manipulate the second translation mechanism to drive the lifting fork to move back and forth along the slide rail, and extend or retract from the opening at the front end of the slide rail, so as to move all the goods placed on the lifting fork into the car through the rear door of the car, completing a one-time loading of the whole car, or to move all the goods in the car into the lifting fork and then remove them, completing a one-time unloading of the whole car. This solves the many inconveniences caused by repeated manual handling of goods. By raising the lifting fork, the goods are lifted off the frame, or by lowering the lifting fork, the goods are placed on the frame and supported by it, realizing the movement and placement of goods on the frame.

[0028] Furthermore, the upper moving fork is formed by vertical plates on both sides and a horizontal plate or an arc-shaped plate at the top, creating a first U-shaped long frame with an opening facing downwards; the lower moving fork is formed by vertical side plates on both sides and a horizontal top plate or an arc-shaped top plate, creating a second U-shaped long frame with an opening facing downwards; and the slide is formed by vertical plates on both sides and a horizontal bottom plate, creating a third U-shaped long frame with an opening facing upwards.

[0029] Furthermore, corresponding vertical positioning slide bars or vertical positioning grooves are provided on the vertical plates or vertical side plates on both sides of the upper and lower moving forks, so that the top of the lower moving fork can be inserted into the opening at the bottom of the upper moving fork, and the several vertical positioning slide bars and the corresponding several vertical positioning grooves can be slidably engaged one by one, so as to play a good lifting limit and sliding role.

[0030] Furthermore, both the upper and lower moving forks are movably connected by multiple segmented bodies through rotating connectors, so that the upper and lower moving forks have good height difference adjustment capability through the connection of multiple segmented bodies, thereby improving the applicability of the lifting slide fork.

[0031] Furthermore, the rotating connector is a conventional hinge or a conventional fastener, which enables the multiple segments of the upper and lower moving forks to have good height difference adjustment capability and reduce the shortcomings of rigid connection.

[0032] The slide is fixedly connected by multiple segments. The horizontal base plate of the slide is provided with a chain groove that matches the drive chain. This chain groove prevents horizontal deformation of the drive chain when it moves under load, thereby improving the stability of the lifting fork moving within the slide.

[0033] The expansion lifting mechanism of the lifting slide fork is configured as an expansion body with a length adapted to the length of the upper and lower moving forks and a hollow interior. The medium inlet and outlet of the expansion body is located between the ends of the upper and lower moving forks. It is connected to an external medium supply device through a medium conveying pipeline so that, as needed, gas or liquid can be injected into the hollow expansion body to cause it to expand and push the upper moving fork to rise, and vice versa, thereby realizing the height adjustment of the lifting slide fork.

[0034] Furthermore, the upper moving fork end is provided with a flat plate bracket adapted to the expansion body, and the lower moving fork end is provided with a downwardly inclined surface adapted to the expansion body, so that the length of the expansion body is limited by the cooperation of the flat plate bracket at the same end and the downwardly inclined surface, so that it is always within the upper and lower moving forks.

[0035] Furthermore, the expansion body is an elongated air band or air bladder.

[0036] The second translation mechanism of the lifting slide fork includes a moving component and a driving component. The moving component is rotatably disposed in the second accommodating space, and the driving component is disposed outside the slide and connected to the moving component through the chain inlet and outlet on the slide. This allows the goods to be removed from the frame when the upper moving fork is driven to rise by the expansion lifting mechanism, and to be placed on the slide and supported by it when it is lowered. The second translation mechanism then facilitates the reciprocating movement of the upper and lower moving forks along the slide.

[0037] The moving component includes: several roller sets, a drive chain and an adjustment frame. The roller sets include axles connected to the inner surfaces of the vertical side plates on both sides of the lower moving fork, and rollers rotatably mounted on the axles and rolling in contact with the slide rail, so as to facilitate the rollers to drive the upper and lower moving forks to move on the slide rail, thereby realizing the extension or retraction of the lifting slide fork.

[0038] Furthermore, after the drive chain is wound around the drive assembly outside the slide, its two ends extend inward through the chain inlet and outlet on the slide and are connected to the corresponding adjustment frame respectively.

[0039] Furthermore, the drive assembly includes a drive sprocket located below the slide rail and mated with the drive chain. Both ends of the drive sprocket's axle are respectively rolledly connected to bearings with seats. One end of the drive sprocket's axle is connected to the main shaft of the fourth power unit, so that under the drive of the fourth power unit, the drive chain is moved by the drive sprocket, and then several roller groups and the lower moving fork and upper moving fork are moved synchronously along the horizontal base plate of the slide rail, so as to realize the extension or retraction of the lifting slide fork.

[0040] Furthermore, the adjusting frame is respectively located at both ends of the lower moving fork, and includes: a fixed block respectively located between the vertical side plates at both ends of the lower moving fork, and a movable block respectively connected to both ends of the drive chain. The movable block is screwed to the inner end of the first horizontal screw, and the outer end of the first horizontal screw extends outward through the through hole on the fixed block. A horizontal plate extending in the direction of the drive chain is provided on the top of the fixed block. A horizontal through groove is provided on the horizontal plate, and a vertical limiting rod is provided on the top of the movable block. The top of the vertical limiting rod is placed in the horizontal through groove on the horizontal plate so that when the first horizontal screw is rotated, the movable block is driven to move along the first horizontal screw and the horizontal through groove on the horizontal plate, thereby adjusting the tension of the drive chain.

[0041] Furthermore, a front and rear guide wheel that mates with the drive chain is provided below the chain inlet and outlet. The front and rear guide wheels are respectively connected to the corresponding movable wheel frame through wheel axles. The movable wheel frame is screwed to the fixed frame located on the bottom surface of the slide rail horizontal base plate through a second horizontal screw. This allows the second horizontal screw to be operated simultaneously when the adjustment frame adjusts the tension of the drive chain, thereby driving the movable wheel frame and the front and rear guide wheels to move adaptively and meet the tension adjustment requirements of the drive chain.

[0042] Furthermore, the adjustment frame can also be other conventional adjustment mechanisms.

[0043] The cargo conveying mechanism of the cargo loading and unloading platform includes: a moving chain that is respectively set on multiple slide rails to drive the cargo on them to move, and the conveying surface of the moving chain is higher than the top surface of the lifting slide fork in the landing state. The moving chain is connected to the fifth power unit through a transmission component.

[0044] Furthermore, the transmission assembly includes a plurality of driving sprockets and driven sprockets located at the front and rear ends of the frame via corresponding axles, a moving chain respectively sleeved between the corresponding driving sprockets and driven sprockets, and a fifth power unit connected to one of the axles via a transmission component. The plurality of driving sprockets, driven sprockets, and corresponding transmission chains are located between pairs of adjacent slides at the front and rear ends of the frame. A main transmission sprocket and a coaxial driven power unit sprocket are provided on the frame behind the driving sprocket axle. The main transmission sprocket is connected to the driven transmission sprocket sleeved on the driving sprocket axle via a corresponding transmission chain, and the driven power unit sprocket is connected to the driving power unit driving sprocket on the fifth power unit main shaft located at the bottom of the frame via a corresponding transmission chain.

[0045] Furthermore, the transmission assembly can also be a combination of other conventional transmission belts and pulleys to transport goods placed on the rack.

[0046] The present invention has the following advantages and effects: By manipulating the second translation mechanism to drive the lifting fork to move back and forth along the slide rail, and to extend or retract from the opening at the front end of the slide rail, all the goods placed on the lifting fork are moved into the cargo compartment through the rear door of the cargo compartment, completing a one-time full-vehicle loading, or all the goods in the cargo compartment are forked onto the lifting fork and then moved out, completing a one-time full-vehicle unloading. The vertical direction of the alignment bracket is adjusted by the lifting mechanism, the horizontal direction of the alignment bracket is adjusted by the first translation mechanism, and the angle of the alignment bracket is adjusted by the rotation mechanism, so as to realize the position alignment of the cargo loading and unloading platform, accurately complete the loading or unloading, solve the many inconveniences caused by frequent adjustment of the loading and unloading position, greatly improve the loading and unloading efficiency of goods, and provide reliable technical support for modern and automated logistics. Attached Figure Description

[0047] Figure 1This is a structural diagram of the present invention;

[0048] Figure 2 This is a top view of the alignment bracket and base of the present invention;

[0049] Figure 3 for Figure 2 Side view;

[0050] Figure 4 for Figure 2 The base structure diagram in the middle;

[0051] Figure 5 for Figure 4 Diagram of the lifting mechanism;

[0052] Figure 6 for Figure 4 Diagram of translation drive components in the diagram;

[0053] Figure 7 for Figure 6 Diagram of the Y-shaped moving fork structure in the diagram;

[0054] Figure 8 for Figure 2 The structural diagram of the rotating mechanism in the diagram;

[0055] Figure 9 for Figure 8 Structure diagram of the rotary drive component in the diagram;

[0056] Figure 10 for Figure 8 Diagram of the moving roller structure in the middle;

[0057] Figure 11 This is a front view of the cargo loading and unloading platform of the present invention;

[0058] Figure 12 for Figure 11 Top view;

[0059] Figure 13 for Figure 11 Cross-sectional structural diagram;

[0060] Figure 14 for Figure 11 Longitudinal section structural diagram;

[0061] Figure 15 Axonometric view of the cargo loading and unloading platform;

[0062] Figure 16 This is a diagram of the upper moving fork structure;

[0063] Figure 17 This is a diagram of the lower moving fork structure;

[0064] Figure 18 This is a cross-sectional structural diagram of the lifting slide fork;

[0065] Figure 19 for Figure 14 A partial view;

[0066] Figure 20 for Figure 19 A partial view;

[0067] Figure 21 for Figure 12 A magnified view of a portion of the image. Detailed Implementation

[0068] The present invention will now be further described with reference to the accompanying drawings.

[0069] The sliding forklift loading and unloading machine provided by the present invention includes: a base 1, on which an alignment platform is provided, and on which a cargo loading and unloading platform 3 is provided, wherein:

[0070] The platform for finding correct information includes:

[0071] The alignment bracket 2 is provided with a lifting mechanism 6 for vertical adjustment of the alignment bracket 2 relative to the base 1, and a first translation mechanism 5 for horizontal adjustment. The alignment bracket 2 is also equipped with a rotation mechanism 7 for angular adjustment of the cargo loading / unloading platform relative to the alignment bracket 2. Figure 1 ;

[0072] The alignment bracket 2 consists of two longitudinal vertical plates and two transverse vertical plates forming a second horizontal rectangular frame. Within this second horizontal rectangular frame are multiple longitudinal connecting beams 22 and transverse connecting beams 21 arranged in a crisscross pattern. Figure 2 , Figure 8 ;

[0073] The lifting mechanism 6 includes: multiple horizontal support beams 51 spaced apart on the base 1; lifting components located between the bottom ends of each horizontal support beam 51 and the base 1; and multiple lifting components connected to a power transmission component located on the base 1, such as... Figure 2 , Figure 4 ,in:

[0074] Each lifting assembly includes: a housing 65 mounted on a base 1; a worm gear horizontally disposed within the housing 65; a worm gear shaft 64 with its upper and lower ends passing through the housing 65 and extending upward and downward respectively; the upper extension end engaging with a seated bearing 66 located at the bottom of a corresponding transverse horizontal support beam 51; and the lower extension end rotatably connected to a seated bearing on the base 1; and a worm shaft 67 extending horizontally. Figure 5 ;

[0075] Obviously, the lifting assembly is a conventional power cylinder lifting mechanism or a screw lifting mechanism;

[0076] The power transmission assembly includes: a second power unit 61 mounted on the base 1, the main shaft of which is connected to the input shaft of the first gearbox 62; the front and rear output shafts of the first gearbox 62 are respectively connected to the input shafts of the corresponding second gearboxes 63 on the front and rear sides of the base 1; and the left and right output shafts of the second gearboxes 63 are respectively connected to the worm shafts 64 of multiple lifting components on the same side, such as... Figure 4 , Figure 5 ;

[0077] So that the worm shaft 64 can be driven to rotate through the second power machine 61, the first gearbox 62, and the second gearbox 63, and then the multiple transverse horizontal support beams 51 can be driven to rise and fall synchronously through the worm wheel shaft 67, thereby adjusting the vertical direction of the alignment bracket 2 on the transverse horizontal support beam 51.

[0078] Obviously, the lifting assembly is a conventional power cylinder lifting mechanism or a screw lifting mechanism;

[0079] The first translation mechanism 5 includes: a translation component disposed between the horizontal support beam 51 of the base 1 and the alignment bracket 2, and a translation drive component connected to the translation component, wherein:

[0080] The translation assembly includes: a horizontal slide rail 52 arranged along the top surface of each horizontal support beam 51; multiple translation sliders 53 arranged on the horizontal slide rail 52; the bottom of the multiple translation sliders 53 is provided with a groove that slides and engages with the horizontal slide rail 52; and the top of the sliders 53 is connected to the bottom of the alignment bracket 2. Figure 3 , Figure 4 ;

[0081] The translation drive assembly includes: multiple sliding parts located on the base 1, each sliding part being a Y-shaped moving fork 55. The top fork of the Y-shaped moving fork 55 is connected to the bottom of the alignment bracket 2, and the bottom is suspended. Each Y-shaped moving fork 55 is provided with a vertical slide rail 551, and a slider 553 is provided on the vertical slide rail 551. The inner side of the slider 553 is provided with a groove that slides and engages with the vertical slide rail 551, and the outer side is connected to a horizontal axis with a rolling wheel 552 at the front end. The rolling wheel 552 is placed in a horizontal limiting groove 54, and the horizontal limiting groove 54 is fixed to the base 1 by a bracket. The Y-shaped moving fork 55 is connected to the third power unit 58 via a transmission assembly. The transmission assembly includes a translation drive sprocket 57 and a translation driven sprocket 56 located on the bases 1 on both sides of the Y-shaped moving fork 55. The axles of the translation drive sprocket 57 and the translation driven sprocket 56 are respectively fixed to the base 1 via corresponding bearing seats. A transmission chain is wound around the translation drive sprocket 57 and the translation driven sprocket 56. This transmission chain is connected to the sprocket 554 on the slider 553 of the Y-shaped moving fork 55. The axle of the translation drive sprocket 57 is connected to the main shaft of the third power unit 58 on the base 1. Figure 4 , Figure 6 , Figure 7 ;

[0082] Obviously, the slider can also be of other shapes;

[0083] Obviously, the transmission component can also be other transmission mechanisms in the prior art, such as transmission pulleys, transmission belts, power machines; or lead screw drives, or power cylinder drives;

[0084] So that under the drive of the third power unit 58, the transmission chain is moved by the translational drive sprocket 57 and the translational driven sprocket 56, which in turn drives the Y-shaped moving fork 55 and the alignment bracket 2 to translate along the transverse horizontal support beam 51, so as to realize the horizontal movement and alignment of the alignment bracket 2. When the alignment bracket 2 rises or falls with the lifting mechanism 6, only the Y-shaped moving fork 55 rises or falls synchronously with the lifting mechanism 6, while the slider 553, sprocket 554 and transmission chain do not rise or fall.

[0085] The rotating mechanism 7 includes: an annular track 76 located at the top center of the alignment bracket 2, multiple arc-shaped tracks 73 symmetrically arranged on both sides of the annular track 76 and evenly spaced from near to far, annular wheel frames 71 for annular movement on the annular track 76, and corresponding arc-shaped wheel frames 74 for arc-shaped movement on the multiple arc-shaped tracks 73 respectively.

[0086] in:

[0087] The bottom of the annular wheel frame 71 and the arc-shaped wheel frame 74 are respectively provided with multiple movable rollers 75 that mate with the annular track 76 and the arc-shaped track 73. The tops of the annular wheel frame 71 and the arc-shaped wheel frame 74 are connected to the cargo loading and unloading platform. The alignment bracket 2 is provided with a rotary drive assembly that mates with multiple arc-shaped wheel frames 74. The annular track 73 has a vertically arranged central rotating shaft 72. The upper and lower ends of the central rotating shaft 72 are respectively rotatably connected to the bearings on the bottom of the cargo loading and unloading platform and the base 1. Figure 8 So that the cargo loading and unloading platform can rotate and swing to a certain extent on the alignment bracket 2 through the rotating mechanism 7, so that the conveying direction of the cargo loading and unloading platform is aligned with the truck bed;

[0088] The top surfaces of the annular track 76 and the arc-shaped track 73 are set as horizontal planes. The movable roller 51, located on the horizontal plane, is a conical roller with a smaller diameter at one end facing the central rotating shaft 72 and a larger diameter at the other end. The conical roller is rotatably connected to a seated bearing located at the bottom of the annular wheel frame 71 and the arc-shaped wheel frame 74 via a horizontally set axle. Figure 9 This is to ensure that the alignment bracket 2 can rotate smoothly under heavy load by using tapered rollers;

[0089] The rotary drive assembly includes: a first power unit 79 mounted on the alignment bracket 2, the main shaft of which is connected to the input shaft of a transmission box 710 located at the top of the alignment bracket 2; the output shaft of the transmission box 710 extends vertically upward and is connected to a drive gear 77; the drive gear 77 meshes with a corresponding arc-shaped rack 78 mounted on an arc-shaped wheel frame 74. Figure 8 , Figure 9 So that the first power unit 79 and the drive gear 77 drive the arc rack 78 and the arc wheel frame 74 to move along the arc track 73, thereby causing the cargo loading and unloading platform to rotate and swing to a certain extent, so that the conveying direction of the cargo loading and unloading platform is aligned with the truck bed;

[0090] The base 1 is formed by two longitudinal upright plates 12 and two transverse upright plates 11, creating a first horizontal rectangular frame. Two longitudinal beams 13 are symmetrically arranged within the first horizontal rectangular frame, and multiple transverse beams 15 are arranged between the two longitudinal beams 13. Several reinforcing plates 14 are spaced apart between the longitudinal upright plates 12, the transverse upright plates 11, and the adjacent longitudinal beams 13 and transverse beams 15. Figure 4 So that the alignment bracket 2 on the base 1 can be supported, and the lifting mechanism 6 and the first translation mechanism 5 can be installed.

[0091] Cargo loading and unloading platform 3 includes:

[0092] The frame 31 has multiple open-fronted slide rails 32 arranged side by side, with lifting forks 4 respectively installed in the corresponding slide rails 32. A second translation mechanism 8, mounted on the frame 31, controls the movement of the lifting forks 4. A cargo conveying mechanism 9, mounted on the frame 31 and located on the slide rails 32, is also included. Figure 11 , Figure 12 ;

[0093] The frame 31 is a horizontal rectangular frame with an open front end and a closed rear end. This horizontal rectangular frame consists of multiple spaced longitudinal beams 311 and transverse beams 312 located at the rear ends of the longitudinal beams 311. Furthermore, multiple transverse connecting rods 313 are spaced along the bottom of the horizontal rectangular frame from one end of the longitudinal beams 311 to the other end. Figure 12 , Figure 13 , Figure 15 This allows for the fixing and installation of the slide rails 32, lifting forks 4, various transmission components, and drive equipment via the frame 31, and for carrying goods and pallets;

[0094] The slide 32 is formed by two upright plates 322 and a horizontal base plate 323, creating an upward-opening third U-shaped long frame. This third U-shaped long frame is divided into two segments, which are fixedly connected to each other. The third U-shaped long frame is longitudinally positioned between adjacent longitudinal beams 311 of the frame 31. Each third U-shaped long frame has an open front and a closed rear. The lifting fork 4 slides within the corresponding third U-shaped long frame, and its length is adapted to the length of the third U-shaped long frame. Figure 15 So that the lifting slide fork 4 can slide back and forth along the third U-shaped long frame and slide out or in from the opening at the front end of the third U-shaped long frame;

[0095] The horizontal base plate 323 of the slide 32 is provided with a chain groove 324 that mates with the drive chain 85, such as... Figure 18 This is to prevent horizontal deformation of the drive chain 85 when it moves under load through the chain groove 324, and to improve the stability of the lifting fork 4 moving within the slide 32.

[0096] The lifting fork 4 includes a lower moving fork 43, an expansion lifting mechanism 41, an upper moving fork 42, and a second translation mechanism 8. The lower moving fork 43 is movably fitted into the upper moving fork 42, forming a first accommodating space between the upper moving fork 42 and the lower moving fork 43. The expansion lifting mechanism 41 is located within this first accommodating space and drives the upper moving fork 42 to vertically rise and fall along the lower moving fork 43. A second accommodating space is formed between the lower moving fork 43 and the slide rail 32. The second translation mechanism 8 is located within this second accommodating space and drives the upper and lower moving forks 42 and 43 to translate along the slide rail 32. Figure 18 ,in:

[0097] The upper movable fork 42 is formed by two vertical plates 423 on both sides and a horizontal plate 424 on the top, creating a first U-shaped long frame with an opening facing downwards. Vertical positioning slide bars 421 are provided at intervals on the inner sides of the two vertical plates 423 of the first U-shaped long frame, such as... Figure 16 ;

[0098] The lower moving fork 43 is formed by two vertical side plates 435 and a horizontal top plate 434, creating a downward-facing second U-shaped elongated frame. Vertical positioning grooves 431, which mate with vertical positioning slide bars 421, are spaced apart on the outer surfaces of the two vertical side plates 435 of this second U-shaped elongated frame. Figure 17 ;

[0099] The top of the lower moving fork 43 is inserted into the bottom opening of the upper moving fork 42, and a number of vertical positioning slide bars 421 are slidably engaged with a number of corresponding vertical positioning slide grooves 431.

[0100] The vertical positioning slide bar 421 and vertical positioning slide groove 431, which are interconnected by the upper and lower moving forks 42 and 43, play a good role in lifting, limiting and sliding.

[0101] The first and second U-shaped elongated frames of the upper and lower moving forks 42 and 43 are each configured as multiple interconnected segments. Each pair of segments is connected to the others by a rotating connector, which is a hinge. This hinge includes a movable connecting plate 44 located between adjacent vertical plates 423 or vertical side plates 435, and hinge pins 45 located at both ends of the movable connecting plate 44 and connected to the corresponding vertical plates 423 or vertical side plates 435. Figure 16 , Figure 17In order to enable the upper and lower moving forks 42 and 43 to have good height difference adjustment capability through multiple segmented connections, thereby improving the applicability of the lifting slide fork 4;

[0102] Clearly, the rotating connector is a conventional hinge or a conventional fastener, which enables the multiple segments of the upper and lower moving forks to have good height difference adjustment capabilities, reducing the shortcomings of rigid connections.

[0103] The expansion lifting mechanism 41 is configured as an expansion body with a length adapted to the length of the upper and lower moving forks 42 and 43 and a hollow interior. The expansion body is a hollow elongated air bag 411. The medium inlet and outlet of the elongated air bag 411 is located between the ends of the upper and lower moving forks 42 and 43. It is connected to an external medium supply device through a medium conveying pipeline so that, as needed, gas or liquid can be injected into the hollow elongated air bag 411 to expand it and push the upper moving fork 42 to rise, and vice versa, thereby realizing the height adjustment of the lifting slide fork 4.

[0104] The upper moving fork 42 has a flat plate bracket 422 at its end that is adapted to the elongated airbag 411, and the lower moving fork 43 has a downwardly inclined surface 432 at its end that is adapted to the elongated airbag 411. This allows the length of the elongated airbag 411 to be limited by the cooperation of the flat plate bracket 422 and the downwardly inclined surface 432 at the same end, ensuring that it remains within the upper and lower moving forks 42 and 43. Figure 16 , Figure 17 ;

[0105] The second translation mechanism 8 includes a moving component and a driving component. The moving component is rotatably disposed within the second accommodating space. The driving component is disposed outside the slide rail 32 and connected to the moving component via a chain inlet / outlet 321 on the slide rail 32. This allows the upper moving fork 43 to rise via the expansion lifting mechanism 41, allowing the goods to detach from the frame 31, and to be placed on and supported on the slide rail 32 during descent. The second translation mechanism 8 then facilitates the reciprocating movement of the upper and lower moving forks 42 and 43 along the slide rail 32.

[0106] The moving assembly includes: several roller sets 433, a drive chain 85, and an adjusting frame. Each roller set 433 includes axles connected to the inner surfaces of the vertical side plates 435 on both sides of the lower moving fork 43, and rollers 436 rotatably mounted on the axles and in rolling contact with the slide rail 32. Figure 19 This facilitates the rollers 436 to drive the upper and lower moving forks 42 and 43 to move on the slide rail 32, thereby enabling the extension or retraction of the lifting slide fork 4.

[0107] After the drive chain 85 is wound around the drive assembly outside the slide rail 32, its two ends extend inward through the chain inlet / outlet 321 on the slide rail 32 and are connected to the corresponding adjustment frame respectively.

[0108] The drive assembly includes: a drive sprocket 81 located below the slide rail 32 and mating with the drive chain 85; both ends of the drive sprocket 81's axle are respectively rolledly connected to bearings with mounting seats; one end of the drive sprocket 81's axle is connected to the main shaft of the fourth power unit 86, such as... Figure 18 , Figure 19 , Figure 20 , Figure 14 So that under the drive of the fourth power machine 86, the drive chain 85 is moved by the drive sprocket 81, and then several roller groups 433 and the lower moving fork 43 and the upper moving fork 42 move synchronously along the horizontal base plate 323 of the slide rail 32, so as to realize the extension or retraction of the lifting slide fork 4.

[0109] Adjustment brackets are respectively located at both ends of the lower moving fork 43, and include: a fixed block 853 respectively located between the vertical side plates 435 at both ends of the lower moving fork 43; movable blocks 851 respectively connected to both ends of the drive chain 85; the movable blocks 851 are screwed to the inner end of the first horizontal screw 852; the outer end of the first horizontal screw 852 extends outward through a through hole on the fixed block 853; and a horizontal plate 854 extending towards the drive chain 85 is provided on the top of the fixed block 853, the horizontal plate 854 having a horizontal through groove 856; and a vertical limiting rod 855 is provided on the top of the movable block 851, the top of which is placed in the horizontal through groove 856 on the horizontal plate 854. Figure 19 So that when the first horizontal screw 852 is rotated, the movable block 851 is driven to move along the horizontal through groove 856 on the first horizontal screw 852 and the horizontal plate 854, thereby adjusting the tension of the drive chain 85.

[0110] Below the chain inlet / outlet 321 are front and rear guide wheels 82 that mate with the drive chain 85. These guide wheels 82 are connected to corresponding movable wheel frames 83 via axles. The movable wheel frames 83 are screwed to a fixed frame 84 located on the bottom surface of the horizontal base plate 323 of the slide rail 32 via a second horizontal screw 87. Figure 20 So that when the adjusting frame adjusts the tension of the drive chain 85, the second horizontal screw 87 is operated simultaneously, which drives the movable wheel frame 83 and the front and rear guide wheels 82 to move adaptively to meet the tension adjustment requirements of the drive chain 85.

[0111] Obviously, the adjustment frame can also be other conventional adjustment mechanisms;

[0112] The cargo conveying mechanism 9 includes: a moving chain 96 that is respectively provided on multiple slide rails 32 and can drive the cargo thereon to move, and the conveying surface of the moving chain 96 is higher than the top surface of the lifting slide fork 4 in the lowered state. The moving chain 96 is connected to the fifth power unit 91 through a transmission component.

[0113] The transmission assembly includes a plurality of driving sprockets 95 and driven sprockets located at the front and rear ends of the frame 31 via corresponding axles. Moving chains 96 are respectively fitted between the corresponding driving sprockets 95 and driven sprockets. A fifth power unit 91 is connected to one of the axles via a transmission component. The plurality of driving sprockets 95, driven sprockets, and corresponding transmission chains are located between pairs of adjacent slide rails 32 at the front and rear ends of the frame 31. Furthermore, a main transmission sprocket 92 and a coaxial driven power unit sprocket 94 are provided on the frame 31 behind the axle of the driving sprockets 95. The main transmission sprocket 92 is connected to the driven transmission sprocket 93 fitted on the axle of the driving sprockets 95 via a corresponding transmission chain. The driven power unit sprocket 94 is connected to the driving power unit driving sprocket on the main shaft of the fifth power unit 91 located at the bottom of the frame 31 via a corresponding transmission chain. Figure 21 .

[0114] Obviously, the transmission assembly can also be a combination of other conventional transmission belts and pulleys to transport goods placed on the rack.

Claims

1. A sliding forklift loading and unloading machine, comprising a base, characterized in that... The base is equipped with an alignment platform, and the alignment platform is equipped with a cargo loading and unloading platform; The alignment platform includes: an alignment bracket, a lifting mechanism for adjusting the alignment bracket vertically relative to the base and a first translation mechanism for adjusting horizontally, and a rotation mechanism for adjusting the cargo loading and unloading platform on the alignment bracket relative to the alignment bracket. The cargo loading and unloading platform includes: a frame, multiple open-fronted slides arranged side by side on the frame, lifting slides respectively located in the corresponding slides, a second translation mechanism on the frame for manipulating the movement of the lifting slides, and a cargo conveying mechanism on the frame and located on the slides. The first translation mechanism includes: a translation component disposed between the base and the alignment bracket, and a translation drive component connected to the translation component, wherein: The translation component includes: horizontal slide rails respectively installed on the top surface of multiple horizontal support beams of the base, multiple translation sliders installed on the corresponding horizontal slide rails, and the multiple translation sliders connected to the bottom of the alignment bracket. The translation drive assembly includes: multiple sliding parts located on the base, the top of the multiple sliding parts being connected to the bottom of the alignment bracket and the bottom being suspended, each sliding part being provided with a vertical slide rail, a slider on the vertical slide rail, and a horizontal shaft with a roller at its front end on the slider, the sliding parts being connected to a third power unit through a transmission assembly.

2. The sliding forklift loading and unloading machine according to claim 1, characterized in that... The rotating mechanism includes: an annular track located at the top center of the alignment bracket; multiple arc-shaped tracks symmetrically arranged on both sides of the annular track and evenly spaced from near to far; an annular wheel frame that moves in an annular motion on the annular track; and corresponding arc-shaped wheel frames that move in an arc on each of the multiple arc-shaped tracks.

3. The sliding forklift loading and unloading machine according to claim 2, characterized in that... The bottom of the annular wheel frame and the arc wheel frame are respectively provided with multiple movable rollers that are matched with the annular track and the arc track. The top of the annular wheel frame and the arc wheel frame are connected to the goods or the mechanism. The arc wheel frame is connected to the rotary drive component. The center of the annular track is vertically provided with a central rotating shaft.

4. The sliding forklift loading and unloading machine according to claim 3, characterized in that... The rotary drive assembly includes: a first power unit mounted on the alignment bracket, the main shaft of the first power unit being connected to the input shaft of a transmission box mounted on the top of the alignment bracket, the output shaft of the transmission box extending vertically upward and being connected to a drive gear, and the drive gear meshing with a corresponding arc-shaped rack mounted on an arc-shaped wheel frame.

5. The sliding forklift loading and unloading machine according to claim 1, characterized in that... The lifting mechanism includes: multiple horizontal support beams spaced apart on the base, multiple lifting components located between the bottom ends of each horizontal support beam and the base, and the multiple lifting components being connected to a power transmission component located on the base.

6. The sliding forklift loading and unloading machine according to claim 1, characterized in that... Its features The roller is placed in a horizontal limiting groove, which is fixed to the base by a bracket.

7. The sliding forklift loading and unloading machine according to claim 1, characterized in that... The lifting slide fork includes a lower moving fork, an expansion lifting mechanism, an upper moving fork, and a second translation mechanism. The lower moving fork is movably sleeved on the upper moving fork, forming a first accommodating space between the upper and lower moving forks. The expansion lifting mechanism is located in the first accommodating space and drives the upper moving fork to move vertically up and down along the lower moving fork. A second accommodating space is formed between the lower moving fork and the slide rail. The second translation mechanism is located in the second accommodating space and drives the upper and lower moving forks to translate along the slide rail.

8. The sliding forklift loading and unloading machine according to claim 7, characterized in that: The upper moving fork is formed by vertical plates on both sides and a horizontal plate or an arc-shaped plate at the top, creating a first U-shaped long frame with the opening facing downwards. The lower moving fork is formed by vertical side plates on both sides and a horizontal top plate or an arc-shaped top plate, which together form a second U-shaped long frame with the opening facing downwards. The slide is formed by two vertical plates on both sides and a horizontal bottom plate, creating a third U-shaped long frame with the opening facing upwards. The vertical plates or vertical side plates on both sides of the upper and lower moving forks are provided with corresponding vertical positioning slide bars or vertical positioning slide grooves. Both the upper and lower moving forks are composed of multiple segmented bodies connected by rotating connectors. The slide is fixedly connected by multiple segments, and the horizontal bottom plate of the slide is provided with a chain groove that matches the drive chain; The upper moving fork end is provided with a flat plate support adapted to the expansion body, and the lower moving fork end is provided with a downwardly inclined surface adapted to the expansion body.

9. The sliding forklift loading and unloading machine according to claim 7, characterized in that... The expansion lifting mechanism is configured as an expansion body with a length adapted to the length of the upper and lower moving forks and a hollow interior. The medium inlet and outlet of the expansion body are located between the ends of the upper and lower moving forks, and it is connected to an external medium supply device through a medium conveying pipeline. The second translation mechanism includes a moving component and a driving component. The moving component is rotatably disposed within the second accommodating space, and the driving component is disposed outside the slide rail and connected to the moving component via a chain inlet / outlet on the slide rail.

10. The sliding forklift loading and unloading machine according to claim 9, characterized in that... The moving assembly includes: several roller sets, a drive chain, and an adjusting frame. The roller sets include axles connected to the inner surfaces of the vertical side plates on both sides of the lower moving fork and rollers rotatably mounted on the axles and rolling in contact with the slide rail. The adjusting frames are respectively located at both ends of the lower moving fork. The drive chain is wound around the drive assembly outside the slide rail, and its two ends extend inward through the chain inlet and outlet on the slide rail to the slide rail and are respectively connected to the corresponding adjusting frames. The drive assembly includes a drive sprocket located below the slide and mating with the drive chain. Both ends of the drive sprocket's axle are respectively rolledly connected to bearings with mounting seats, and one end of the drive sprocket's axle is connected to the main shaft of the fourth power unit.

11. The sliding forklift loading and unloading machine according to claim 10, characterized in that... The adjusting frame includes: a fixed block disposed between vertical side plates at both ends of the lower moving fork; a movable block connected to both ends of the drive chain; the movable block is screwed to the inner end of a first horizontal screw; the outer end of the first horizontal screw extends outward through a through hole on the fixed block; and a horizontal plate extending in the direction of the drive chain is provided on the top of the fixed block. The horizontal plate is provided with a horizontal through groove; and a vertical limiting rod is provided on the top of the movable block. The top of the vertical limiting rod is placed in the horizontal through groove on the horizontal plate. Below the chain inlet and outlet are front and rear guide wheels that are matched with the drive chain. The front and rear guide wheels are respectively connected to the corresponding movable wheel frame through wheel axles. The movable wheel frame is screwed to the fixed frame located on the bottom surface of the horizontal base plate of the slide through the second horizontal screw.

12. The sliding forklift loading and unloading machine according to claim 1, characterized in that... The cargo conveying mechanism includes: a moving chain that is respectively set on multiple slide rails to drive the cargo on them to move, and the conveying surface of the moving chain is higher than the top surface of the lifting slide fork in the landing state. The moving chain is connected to the fifth power unit through a transmission component.

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