High-stability logistics carrying forklift

Abstract

The high-stability logistics carrying forklift comprises pallet forks, a protective cover, a bottom plate, a transverse supporting structure and a longitudinal supporting structure, the number of the pallet forks is two, the two pallet forks are arranged on the front side of the protective cover in a bilateral symmetry mode, and the transverse supporting structure is arranged between the two pallet forks; the transverse supporting structure is used for limiting the two pallet forks in the outward opening process of the two pallet forks, and the transverse supporting structure is used for transversely supporting the two pallet forks after the two pallet forks are opened outwards. The transverse supporting structure is arranged between the two pallet forks, the transverse supporting structure can limit and support movement of the two pallet forks, a plurality of connecting rods in the transverse supporting structure are matched with one another to form a plurality of triangular supporting structures, the stability of the transverse supporting structure is guaranteed, the longitudinal supporting structures are arranged below the two pallet forks, and therefore the stability of the pallet forks is guaranteed. And the pallet fork is longitudinally supported, so that the overall gravity center of the device moves downwards, and after the gravity center is lowered, the forklift can walk more stably.

Description

Technical Field

[0001] The invention relates to the technical field of logistics handling forklifts, in particular to a high-stability logistics handling forklift. Background Art

[0002] Logistics handling forklifts are equipment used to transport and stack goods. Common types include electric forklifts, manual forklifts, reach forklifts and omnidirectional forklifts. Manual forklifts are often used when transporting goods over short distances. Manual forklifts are also called ground bull forklifts. They usually consist of a platform and two forks. The hydraulic system can be used to lift and move the goods to the destination. Ground bull forklifts are widely used in warehouses, supermarkets, factories and other places, and are the main force in material handling equipment.

[0003] The two forks of the existing forklift can be extended outward and lifted upward. When the two forks are extended outward, there is space between the two forks. When the goods are placed on the forks relatively crookedly, the left and right forks will be unevenly stressed, and there is no stable support structure between the two forks. At this time, the fork with more stress may be damaged. When the two forks lift the goods upward, the center of gravity of the forklift will move upward as a whole, and there is a lack of a stable support structure between the two forks and the ground. As the center of gravity moves upward, the forklift will be unstable when walking. Therefore, a high-stability logistics handling forklift that can stably support the two forks of the forklift is proposed. Summary of the invention

[0004] The object of the present invention is to provide a high-stability logistics handling forklift to solve the problem of lack of stable support between two forks and lack of stable support between the two forks and the ground proposed in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A high-stability logistics handling forklift, comprising a fork, a guard, a bottom plate, a transverse support structure and a longitudinal support structure, wherein two forks are provided, the two forks are symmetrically arranged on the front side of the guard, and a transverse support structure is provided between the two forks, the transverse support structure is used to limit the position of the two forks in the process of the two forks being spread outwards, and the transverse support structure is used to provide transverse support to the two forks after they are spread outwards; The bottom plate is arranged below one side of the guard cover, and two longitudinal support structures are arranged below the bottom plate and the two forks. The two longitudinal support structures are respectively arranged corresponding to the two forks, and the two longitudinal support structures cooperate with each other to support the two forks when they are lifted upward and to lower the center of gravity of the two forks and the goods thereon through the cooperation of the two longitudinal support structures during the lifting process.

[0006] As a further solution of the present invention: the cargo fork comprises an upper support plate and a lower support plate, both ends of the upper support plate and the lower support plate are fixed with connecting columns, the upper support plate and the lower support plate are provided with fixing blocks at one end facing the shield, a mounting platform is fixed on the top of the fixing block, the mounting platform is hollowed out on one side facing the bottom plate to form a cavity, a joint is fixed at one end in the cavity, and a slider is fixed on the top of the mounting platform; A transmission rod is arranged above the two forks, and both ends of the transmission rod are symmetrically provided with forward and reverse threads, and the two ends of the transmission rod are respectively threadedly inserted into the joint on the corresponding side, and a gear is sleeved and fixed on the middle part of the transmission rod body, and a fixing rod is arranged below the two forks, and the two ends of the fixing rod respectively slide through the fixing block on the corresponding side, and the two ends of the fixing rod are respectively connected and fixed to the inner wall of the shield on the corresponding side.

[0007] As a further solution of the present invention: the lateral supporting structure includes a first connecting rod, a second connecting rod and a third connecting rod, the first connecting rod, the second connecting rod and the third connecting rod are each provided in two, the two first connecting rods are arranged in parallel and symmetrically between the two forks, and one ends of the two first connecting rods are respectively rotatably sleeved on the connecting column on the corresponding side, the two second connecting rods are arranged in parallel and symmetrically between the two forks, and one ends of the two second connecting rods are respectively rotatably sleeved on the connecting column on the corresponding side, and the other end of the first connecting rod extends and overlaps with the other end of the corresponding second connecting rod and is rotatably connected together.

[0008] As a further solution of the present invention: the middle parts of the two first connecting rods are rotatably connected to the third connecting rod, and one ends of the two third connecting rods are rotatably connected to the overlapping parts of the corresponding first connecting rod and the second connecting rod respectively. The two first connecting rods and the two second connecting rods are used to cooperate with each other to form a diamond-like cross structure between the two forks to laterally support and limit the movement of the two forks. The two third connecting rods are used to cooperate with each other to form multiple triangular support structures between the corresponding first connecting rod and the second connecting rod to enhance the connection stability of the first connecting rod and the second connecting rod.

[0009] As a further solution of the present invention: the longitudinal supporting structure includes a first bracket, a second bracket and a rotating shaft, the first bracket and the second bracket are cross-arranged and rotatably connected at the intersection through the rotating shaft, one end of the first bracket is rotatably connected to a ground wheel, and the other end of the first bracket is rotatably connected to a first connecting member, the top end of the first connecting member is welded to the bottom of the fixed block, one end of the second bracket is rotatably connected to a top wheel, and the other end of the second bracket is rotatably connected to a second connecting member, and the top end of the second connecting member is fixed to the bottom of the base plate.

[0010] As a further solution of the present invention: a limiting groove is provided on one side of the bottom of the lower support plate corresponding to the top wheel, the top wheel is limited and rollingly connected in the limiting groove, both sides of the lower end of the second connecting member are rotatably connected with auxiliary wheels, the first bracket and the second bracket cooperate to form a cross-like structure under the fork to share the gravity of the goods on the fork and lower the center of gravity of the device as a whole.

[0011] As a further solution of the present invention: a base is fixed in the middle position of the top of the base plate, a rocker is arranged above the base, a first hydraulic rod is fixed to one side of the top of the base, the top of the movable end of the first hydraulic rod is fixedly connected to the shield, a driving device is installed in the middle position of the bottom of the base plate, wheels are arranged on both sides of the driving device, and the driving device is used to drive the wheels to roll on the ground and thereby drive the entire device to move on the ground.

[0012] As a further solution of the present invention: a handle is fixed to the top of the rocker, and an angle plate is fixed to the bottom of the rocker. The angle plate is a triangular structure, and its bottom end is rotatably connected to the base. One side of the angle plate is rotatably connected to a pressure wheel, and a second hydraulic rod is installed on the side of the top of the base corresponding to the pressure wheel. The second hydraulic rod is connected to the first hydraulic rod through a pipeline, and a spring is sleeved on the outside of the second hydraulic rod. One end of the movable end of the first hydraulic rod is sleeved with a mounting ring, and the mounting ring is fixed to the movable end of the first hydraulic rod by bolts, and a rack is fixed to the side of the outside of the mounting ring corresponding to the gear, and the rack is meshed with the gear.

[0013] As a further solution of the present invention: the guard shield is a shell structure with a trapezoidal cross-section, which is hollow inside and has an opening at the bottom; a slide is fixed to the upper end of the inside of the guard shield, and the slide is provided with a slide groove running through the upper and lower parts; a connecting block is fixed to the side of the top of the guard shield facing the first hydraulic rod, and the top of the movable end of the first hydraulic rod is fixed to the connecting block; the slider is slidably connected in the slide groove, and a limiting structure is provided between the slider and the slide groove; the upper end of the fork is connected to the upper end of the guard shield by the cooperation of the slider and the slide groove, and the lower end of the fork is connected to the lower end of the guard shield by the cooperation of the fixing block and the fixing rod; the upper and lower ends of the fork are connected to the guard shield at the same time to enhance the connection stability between the fork and the guard shield.

[0014] As a further solution of the present invention: a connecting shaft is provided on one side opposite to the two forks, and the two connecting shafts are respectively fixed on one side of the corresponding fixed block, and an opening penetrating up and down is provided on the side of the base plate facing the two connecting shafts, and sliding rods are fixed in the two openings, and a V-shaped frame is provided between the two sliding rods and the corresponding connecting shafts, and the V-shaped frame is composed of two connecting rods rotating with each other, and a limiting rod is provided between the two V-shaped frames, one end of the two V-shaped frames are rotatably sleeved on the corresponding connecting shaft, and the other ends of the two V-shaped frames are movably sleeved on the corresponding sliding rods, and the two V-shaped frames cooperate to enhance the connection stability between the base plate and the forks and thereby further enhance the overall stability of the device.

[0015] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the fork is a double-layer plate structure, and a transverse support structure is arranged between the left and right forks. When the two forks are stretched outward, the transverse support structure can limit and support the movement of the two forks. A plurality of connecting rods in the transverse support structure cooperate with each other to form a plurality of triangular support structures, thereby ensuring the stability of the transverse support structure and thereby ensuring the stability of the left and right forks. A longitudinal support structure is arranged under the two forks. When the forks are lifted upward, the two brackets in the longitudinal support structure will cross each other. The forks are longitudinally supported by this cross-cross structure, and the gravity of the goods on the forks will be evenly distributed to the two brackets, reducing the burden of the gravity of the goods on the hydraulic rod. At the same time, after the two brackets are cross-expanded, the center of gravity of the entire device is moved downward by sharing the gravity of the goods. After the center of gravity is lowered, the forklift will be more stable when walking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 This is a first viewing angle diagram of the present invention.

[0018] Figure 2 This is a second viewing angle diagram of the present invention.

[0019] Figure 3 This is a third viewing angle diagram of the present invention.

[0020] Figure 4 It is a schematic diagram of the internal structure of the protective cover in the present invention.

[0021] Figure 5This is a first viewing angle diagram of the connection between the fork and the hydraulic rod in the present invention.

[0022] Figure 6 This is a second viewing angle diagram of the connection between the fork and the hydraulic rod in the present invention.

[0023] Figure 7 This is a first perspective view of the fork and the lateral support structure of the present invention.

[0024] Figure 8 This is a second viewing angle diagram of the fork and the lateral support structure of the present invention.

[0025] Fig. 9 This is a first perspective view of the fork and the longitudinal support structure of the present invention.

[0026] Fig.10 This is a second viewing angle diagram of the fork and the longitudinal support structure of the present invention.

[0027] Figure numerals: 1-fork, 101-upper support plate, 102-lower support plate, 103-connecting column, 104-fixed block, 105-mounting table, 106-slider, 107-joint, 108-fixed rod, 109-connecting shaft, 110-limiting groove, 2-shield, 21-slide table, 22-slide groove, 23-connecting block, 3-bottom plate, 31-notch, 32-slide rod, 4-lateral supporting structure, 41-first connecting rod, 42-second connecting rod, 43-third connecting rod, 5 -longitudinal support structure, 51-first bracket, 52-second bracket, 53-rotating shaft, 54-first connecting piece, 55-second connecting piece, 56-auxiliary wheel, 57-ground wheel, 58-top wheel, 6-rocker, 61-handle, 62-angle plate, 63-pressure wheel, 7-driving device, 8-wheel, 9-base, 10-first hydraulic rod, 11-mounting ring, 12-rack, 13-transmission rod, 14-gear, 15-V-frame, 16-limiting rod, 17-second hydraulic rod. DETAILED DESCRIPTION

[0028] The following embodiments will be described in detail with reference to the accompanying drawings. In the drawings or descriptions, similar or identical parts use the same reference numerals, and in actual applications, the shape, thickness or height of each component may be enlarged or reduced. The embodiments listed in the present invention are only used to illustrate the present invention and are not used to limit the scope of the present invention. Any obvious modifications or changes made to the present invention do not depart from the spirit and scope of the present invention.

[0029] See also Figures 1 to 3In an embodiment of the present invention, a high-stability logistics handling forklift includes a fork 1, a guard 2, a bottom plate 3, a transverse support structure 4 and a longitudinal support structure 5. Two forks 1 are provided, and the two forks 1 are symmetrically arranged on the front side of the guard 2, and a transverse support structure 4 is provided between the two forks 1. The transverse support structure 4 is used to limit the position of the two forks 1 during the process of the two forks 1 being stretched outward, and the transverse support structure 4 is used to support the two forks 1 laterally after the two forks are stretched out, and thereby strengthen the connection between the two forks 1, so that the two forks 1 can fork and support objects more stably; The bottom plate 3 is arranged below one side of the guard 2, and two longitudinal support structures 5 are arranged below the bottom plate 3 and the two forks 1. The two longitudinal support structures 5 are respectively arranged corresponding to the two forks 1. The two longitudinal support structures 5 cooperate with each other to support the two forks 1 when they are lifted upwards and to lower the center of gravity of the two forks 1 and the objects thereon through the two longitudinal support structures 5 during the lifting process. After the center of gravity is lowered, the forklift will be more stable when traveling; A base 9 is fixed in the middle position of the top of the bottom plate 3, a rocker 6 is arranged above the base 9, a first hydraulic rod 10 is fixed to one side of the top of the base 9, the top of the movable end of the first hydraulic rod 10 is fixedly connected to the shield 2, a driving device 7 is installed in the middle position of the bottom of the bottom plate 3, wheels 8 are arranged on both sides of the driving device 7, the driving device 7 is used to drive the wheels 8 to roll on the ground and thereby drive the entire device to walk on the ground, the driving device 7 is composed of components such as a motor and a differential, and can be used with existing devices.

[0030] See also Figure 4 The shield 2 is a shell structure with a trapezoidal cross-section, which is hollow inside and has an opening at the bottom. A slide 21 is fixed to the upper end of the shield 2. The slide 21 has a slide groove 22 that runs through it from top to bottom. A connecting block 23 is fixed to the side of the top of the shield 2 facing the first hydraulic rod 10. The top of the movable end of the first hydraulic rod 10 is fixed on the connecting block 23. The shield 2 can be driven to move upward by driving the first hydraulic rod 10.

[0031] See also Figures 5-6The fork 1 includes an upper support plate 101 and a lower support plate 102, and connecting columns 103 are fixed at both ends of the upper support plate 101 and the lower support plate 102. A fixing block 104 is provided at one end of the upper support plate 101 and the lower support plate 102 facing the shield 2. The upper support plate 101 and the lower support plate 102 are connected and fixed by the fixed block 104 and a plurality of connecting columns 103. A mounting platform 105 is fixed on the top of the fixing block 104. The side of the mounting platform 105 facing the bottom plate 3 is hollowed out to form a cavity, and a joint 107 is fixed at one end of the cavity. A slider 106 is fixed on the top of the mounting platform 105. The slider 106 is slidably connected in the slide groove 22, and a limited position structure is provided between the slider 106 and the slide groove 22. Through the limited position cooperation between the slider 106 and the slide groove 22, the fork 1 can be limitedly slidably connected to the lower end of the shield 2. When the shield 2 is lifted, the fork 1 will be lifted synchronously. A transmission rod 13 is arranged above between the two forks 1, and both ends of the transmission rod 13 are symmetrically provided with threads in both directions. Both ends of the transmission rod 13 are respectively threadedly inserted into the joints 107 on the corresponding side. A gear 14 is sleeved and fixed in the middle of the rod body of the transmission rod 13, and a mounting ring 11 is sleeved at one end of the movable end of the first hydraulic rod 10. The mounting ring 11 is fixed to the movable end of the first hydraulic rod 10 by bolts, and a rack 12 is fixed to one side of the mounting ring 11 corresponding to the gear 14, and the rack 12 is meshed with the gear 14; When the movable end of the first hydraulic rod 10 extends upward, it will drive the guard 2 and the two forks 1 to be lifted upward synchronously, and the rack 12 will move upward synchronously driven by the mounting ring 11. When the rack 12 moves upward, the gear 14 meshing therewith will rotate and drive the transmission rod 13 to rotate synchronously. The two ends of the transmission rod 13 are threadedly matched with the joint 107. When the transmission rod 13 rotates, the mounting platform 105 will slide to one side under the limiting action of the slider 106 and the slide groove 22, thereby driving the fixed block 104 and the forks 1 to move synchronously to one side. The threads at the two ends of the transmission rod 13 are in opposite directions, so that the two forks 1 can be opened outward synchronously. A fixing rod 108 is provided below between the two forks 1, and the two ends of the fixing rod 108 slide through the fixing block 104 on the corresponding side, and the two ends of the fixing rod 108 are respectively connected and fixed to the inner wall of the guard 2 on the corresponding side. When the two forks 1 are stretched outward, the two fixing blocks 104 will slide on the fixing rod 108, and the fixing rod 108 further limits the movement of the forks 1. The upper end of the fork 1 is connected to the upper end limit of the guard 2 through the cooperation of the slider 106 and the slide groove 22, and the lower end of the fork 1 is connected to the lower end limit of the guard 2 through the cooperation of the fixing block 104 and the fixing rod 108. The upper and lower ends of the fork 1 are connected to the guard 2 at the same time, so as to enhance the connection stability between the fork 1 and the guard 2 and ensure the stability of the fork 1 when it is lifted upward with the guard 2. A connecting shaft 109 is provided on one side opposite to the two forks 1. The two connecting shafts 109 are respectively fixed on one side of the corresponding fixed block 104. An opening 31 penetrating from top to bottom is provided on one side of the bottom plate 3 facing the two connecting shafts 109. Slide rods 32 are fixed in the two openings 31. A V-shaped frame 15 is provided between the two slide rods 32 and the corresponding connecting shafts 109. The V-shaped frame 15 is composed of two connecting rods rotating with each other. A limit rod 16 is provided between the two V-shaped frames 15. One end of the two V-shaped frames 15 is rotatably sleeved on the corresponding connecting shaft 109, and the other end of the two V-shaped frames 15 is movably sleeved on the corresponding slide rod 32. The V-frame 15 and the slide bar 32 are slidable and rotatable, and the V-frame 15 and the limit rod 16 are slidable and rotatable. When the fork 1 is lifted upward under the drive of the first hydraulic rod 10, one end of the V-frame 15 will move upward synchronously under the drive of the connecting shaft 109, and the other end of the V-frame 15 is limited on the slide bar 32. At this time, under the limiting effect of the slide bar 32, the V-frame 15 will flip and rise. When the two forks 1 are spread outward, the two V-frames 15 will slide synchronously on the limit rod 16 and the slide bar 32. The connection stability between the bottom plate 3 and the fork 1 is enhanced by the two V-frames 15, thereby further enhancing the overall stability of the device. A handle 61 is fixed to the top of the rocker 6, and an angle plate 62 is fixed to the bottom of the rocker 6. The angle plate 62 is a triangular structure, and its bottom end is rotatably connected to the base 9. One side of the angle plate 62 is rotatably connected to a pressure wheel 63. A second hydraulic rod 17 is installed on the side of the top of the base 9 corresponding to the pressure wheel 63. The second hydraulic rod 17 is connected to the first hydraulic rod 10 through a pipeline. The outer sleeve of the second hydraulic rod 17 is provided with a spring. When the rocker 6 is pulled downward by the handle 61, the pressure wheel 63 at the bottom of the rocker 6 will squeeze the second hydraulic rod 17 downward, and squeeze the hydraulic oil inside the second hydraulic rod 17 into the first hydraulic rod 10. After the hydraulic oil inside the first hydraulic rod 10 gradually increases, its movable end will extend upward, thereby driving the fork 1 to lift upward. After releasing the handle 61, the rocker 6 is reset under the action of the spring, which is convenient for pulling down again.

[0032] See also Figures 7-8The transverse supporting structure 4 includes a first link 41, a second link 42 and a third link 43. The first link 41, the second link 42 and the third link 43 are each provided in pairs. The two first links 41 are arranged in parallel and symmetrically between the two forks 1, and one end of the two first links 41 is respectively rotatably sleeved on the connecting column 103 on the corresponding side. The two second links 42 are arranged in parallel and symmetrically between the two forks 1, and one end of the two second links 42 is respectively rotatably sleeved on the connecting column 103 on the corresponding side. The other end of the first link 41 extends and overlaps with the other end of the corresponding second link 42 and is rotatably connected together. The middle parts of the two first links 41 are rotatably connected with the third link 43, and one end of the two third links 43 is respectively rotatably connected to the overlapping part of the corresponding first link 41 and the second link 42. When the two forks 1 are extended outward, the first link 41 and the second link 42 will be synchronously extended outward under the drive of the corresponding connecting column 103 to form a rhombus-like cross structure, through which the two forks 1 are laterally supported and limited during movement to ensure the stability of the forks 1 when supporting goods. At the same time, a third link 43 is additionally arranged between the first link 41 and the second link 42. The third link 43 forms a plurality of triangular support structures between the first link 41 and the second link 42, thereby enhancing the connection stability of the first link 41 and the second link 42, thereby further enhancing the stability between the two forks 1.

[0033] See also Figures 9-10 The longitudinal support structure 5 includes a first bracket 51, a second bracket 52 and a rotating shaft 53. The first bracket 51 and the second bracket 52 are cross-arranged and rotatably connected at the intersection by the rotating shaft 53. One end of the first bracket 51 is rotatably connected to a ground wheel 57, and the other end of the first bracket 51 is rotatably connected to a first connecting member 54. The top end of the first connecting member 54 is welded to the bottom of the fixed block 104. One end of the second bracket 52 is rotatably connected to a top wheel 58, and the other end of the second bracket 52 is rotatably connected to a second connecting member 55. The top end of the second connecting member 55 is fixed to the bottom of the bottom plate 3. A limiting groove 110 is provided on one side of the bottom of the lower support plate 102 corresponding to the top wheel 58. The top wheel 58 is limited and rollingly connected in the limiting groove 110. Auxiliary wheels 56 are rotatably connected to both sides of the lower end of the second connecting member 55. The auxiliary wheels 56 and the wheel 8 are located in the same horizontal plane. In a traditional ground forklift, the bottom of the fork is not supported after it is lifted. In the device, the longitudinal support structure 5 is provided to support the fork 1 when it is lifted. When the fork 1 is lifted upward, one end of the second bracket 52 will tilt upward under the cooperation of the top wheel 58 and the limiting groove 110. At this time, the first bracket 51 rotatably connected to the second bracket 52 will fall downward at one end under the limitation of the first connecting member 54, and the ground wheel 57 at one end of the first bracket 51 will always be against the ground. A cross-like structure will be formed between the first bracket 51 and the second bracket 52. The fork is longitudinally supported by this cross-cross structure, and the gravity of the cargo on the fork 1 will be evenly distributed to the first bracket 51 and the second bracket 52, reducing the burden of the cargo gravity on the first hydraulic rod 10. At the same time, after the first bracket 51 and the second bracket 52 are cross-expanded, the center of gravity of the entire device is moved downward by sharing the gravity of the cargo. After the center of gravity is lowered, the forklift will be more stable when walking.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A high-stability logistics handling forklift, characterized in that: The invention comprises a fork (1), a guard (2), a bottom plate (3), a transverse support structure (4) and a longitudinal support structure (5), wherein the fork (1) is provided in two pieces, the two forks (1) are symmetrically arranged on the front side of the guard (2), and a transverse support structure (4) is arranged between the two forks (1), the transverse support structure (4) is used to limit the position of the two forks (1) during the process of the two forks (1) being extended outwards, and the transverse support structure (4) is used to provide transverse support to the two forks (1) after they are extended outwards; The bottom plate (3) is arranged below one side of the protective cover (2); two longitudinal support structures (5) are arranged below the bottom plate (3) and the two forks (1); the two longitudinal support structures (5) are arranged corresponding to the two forks (1), respectively; the two longitudinal support structures (5) cooperate with each other to support the two forks (1) when they are lifted upwards; and during the lifting process, the center of gravity of the two forks (1) and the goods thereon are lowered by cooperating with the two longitudinal support structures (5).

2. The high stability logistics handling forklift according to claim 1, characterized in that: The cargo fork (1) comprises an upper support plate (101) and a lower support plate (102), connecting columns (103) are fixed at both ends of the upper support plate (101) and the lower support plate (102), a fixing block (104) is provided at one end of the upper support plate (101) and the lower support plate (102) facing the shield (2), a mounting platform (105) is fixed at the top of the fixing block (104), a side of the mounting platform (105) facing the bottom plate (3) is hollowed out to form a cavity, a joint (107) is fixed at one end in the cavity, and a slider (106) is fixed at the top of the mounting platform (105); A transmission rod (13) is arranged above the two forks (1), and both ends of the transmission rod (13) are symmetrically provided with threads in opposite directions. The two ends of the transmission rod (13) are respectively threadedly inserted into the joint (107) on the corresponding side, and a gear (14) is sleeved and fixedly connected to the middle part of the rod body of the transmission rod (13). A fixing rod (108) is arranged below the two forks (1), and the two ends of the fixing rod (108) respectively slide through the fixing block (104) on the corresponding side, and the two ends of the fixing rod (108) are respectively connected and fixed to the inner wall of the protective cover (2) on the corresponding side.

3. The high stability logistics handling forklift according to claim 2, characterized in that: The transverse supporting structure (4) comprises a first connecting rod (41), a second connecting rod (42) and a third connecting rod (43), wherein the first connecting rod (41), the second connecting rod (42) and the third connecting rod (43) are each provided in pairs, the two first connecting rods (41) are symmetrically arranged between the two forks (1) in parallel, and one end of the two first connecting rods (41) is respectively rotatably sleeved on the connecting column (103) on the corresponding side, the two second connecting rods (42) are symmetrically arranged between the two forks (1) in parallel, and one end of the two second connecting rods (42) is respectively rotatably sleeved on the connecting column (103) on the corresponding side, and the other end of the first connecting rod (41) extends and overlaps with the other end of the corresponding second connecting rod (42) and is rotatably connected together.

4. The high stability logistics handling forklift according to claim 3 is characterized in that: The middle parts of the two first connecting rods (41) are rotatably connected to the third connecting rod (43), and one end of the two third connecting rods (43) is rotatably connected to the overlapping part of the corresponding first connecting rod (41) and the second connecting rod (42). The two first connecting rods (41) and the two second connecting rods (42) are used to form a diamond-like cross structure between the two forks (1) to provide lateral support and movement limit for the two forks (1). The two third connecting rods (43) are used to form a plurality of triangular support structures between the corresponding first connecting rod (41) and the second connecting rod (42) to enhance the connection stability of the first connecting rod (41) and the second connecting rod (42).

5. The high stability logistics handling forklift according to claim 2, characterized in that: The longitudinal support structure (5) comprises a first bracket (51), a second bracket (52) and a rotating shaft (53); the first bracket (51) and the second bracket (52) are arranged crosswise and are rotatably connected at the intersection through the rotating shaft (53); one end of the first bracket (51) is rotatably connected to a ground wheel (57), and the other end of the first bracket (51) is rotatably connected to a first connecting member (54); the top end of the first connecting member (54) is welded to the bottom of the fixing block (104); one end of the second bracket (52) is rotatably connected to a top wheel (58), and the other end of the second bracket (52) is rotatably connected to a second connecting member (55); the top end of the second connecting member (55) is fixed to the bottom of the bottom plate (3).

6. The high stability logistics handling forklift according to claim 5, characterized in that: A limiting groove (110) is provided at the bottom of the lower support plate (102) on one side corresponding to the top wheel (58); the top wheel (58) is limited and rollingly connected in the limiting groove (110); auxiliary wheels (56) are rotatably connected to both sides of the lower end of the second connecting member (55); the first bracket (51) and the second bracket (52) cooperate to form a cross-like structure below the fork (1) to distribute the weight of the goods on the fork (1) and lower the center of gravity of the device as a whole.

7. The high stability logistics handling forklift according to claim 2, characterized in that: A base (9) is fixed at the middle position of the top of the bottom plate (3), a rocker (6) is arranged above the base (9), a first hydraulic rod (10) is fixed to one side of the top of the base (9), the top of the movable end of the first hydraulic rod (10) is fixedly connected to the shield (2), a driving device (7) is installed at the middle position of the bottom of the bottom plate (3), wheels (8) are arranged on both sides of the driving device (7), and the driving device (7) is used to drive the wheels (8) to roll on the ground and thereby drive the entire device to walk on the ground.

8. The high-stability logistics handling forklift according to claim 7, characterized in that: A handle (61) is fixed to the top of the rocker (6), and an angle plate (62) is fixed to the bottom of the rocker (6). The angle plate (62) is a triangular structure, and its bottom end is rotatably connected to the base (9). One side of the angle plate (62) is rotatably connected to a pressure wheel (63). A second hydraulic rod (17) is installed on the top of the base (9) on a side corresponding to the pressure wheel (63). The second hydraulic rod (17) is connected to the first hydraulic rod (10) through a pipeline. A spring is sleeved on the outside of the second hydraulic rod (17). One end of the movable end of the first hydraulic rod (10) is sleeved with a mounting ring (11). The mounting ring (11) is fixed to the movable end of the first hydraulic rod (10) by bolts. A rack (12) is fixed on the outside of the mounting ring (11) on a side corresponding to the gear (14). The rack (12) meshes with the gear (14).

9. The high-stability logistics handling forklift according to claim 8, characterized in that: The shield (2) is a shell structure with a trapezoidal cross-section, which is hollow inside and has an opening at the bottom. A slide table (21) is fixed at the upper end inside the shield (2), and a slide groove (22) is provided on the slide table (21) that runs through the upper and lower parts. A connecting block (23) is fixed on the side of the top end of the shield (2) facing the first hydraulic rod (10), and the top end of the movable end of the first hydraulic rod (10) is fixed on the connecting block (23). The sliding block (106) is slidably connected in the slide groove (22), and the sliding block (106) ) and the slide groove (22); the upper end of the fork (1) is connected to the upper end of the shield (2) by the cooperation of the slider (106) and the slide groove (22); the lower end of the fork (1) is connected to the lower end of the shield (2) by the cooperation of the fixing block (104) and the fixing rod (108); the upper and lower ends of the fork (1) are connected to the shield (2) at the same time, thereby enhancing the connection stability between the fork (1) and the shield (2).

10. The high stability logistics handling forklift according to claim 2, characterized in that: A connecting shaft (109) is provided on one side opposite to the two forks (1), and the two connecting shafts (109) are respectively fixed on one side of the corresponding fixing block (104). An opening (31) penetrating from top to bottom is provided on one side of the bottom plate (3) facing the two connecting shafts (109). Slide rods (32) are fixed in the two openings (31). A V-shaped frame (15) is provided between the two slide rods (32) and the corresponding connecting shafts (109). The V-shaped frame ( The two V-shaped frames (15) are composed of two connecting rods that rotate with each other, a limit rod (16) is arranged between the two V-shaped frames (15), one end of the two V-shaped frames (15) is rotatably sleeved on the corresponding connecting shaft (109), and the other end of the two V-shaped frames (15) is movably sleeved on the corresponding sliding rod (32), and the two V-shaped frames (15) cooperate to enhance the connection stability between the base plate (3) and the fork (1) and thereby further enhance the overall stability of the device.

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