Manual fork truck

Abstract

The invention relates to the technical field of stackers, and discloses a manual stacker which comprises a bearing frame. The cargo carrying frame comprises a connecting frame and a supporting frame, the connecting frame is vertically arranged on the bearing frame in a lifting mode, and the supporting frame is horizontally arranged on the bearing frame and rotatably connected with the connecting frame; the manual driving mechanism comprises a first driving assembly arranged on the bearing frame and a second driving assembly arranged on the cargo carrying frame, and the first driving assembly is connected with the connecting frame and can drive the connecting frame to drive the bearing frame to do lifting motion in the vertical direction; the second driving assembly abuts against the supporting frame and can drive the supporting frame to rotate relative to the connecting frame, and an included angle larger than zero degree is formed between the supporting frame and the horizontal line after the supporting frame rotates. The lifting and tilting device has the advantages that the lifting and tilting functions are integrated, the structure is simple, and the production cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of stackers, and particularly to a manual stacker. Background Art

[0002] A stacker is a common material handling equipment, widely used in scenarios such as warehousing, logistics, factories, etc. It is mainly divided into a manual stacker and an electric stacker, which are used to lift goods from the ground to a predetermined height or for short-distance transportation. A manual stacker usually relies on manual operation of the hydraulic system to lift the fork. Due to advantages such as simple structure and low cost, it is commonly seen in small warehouses or stores. The lifting and traveling of an electric stacker are both driven by electricity, with the characteristics of simple operation and high efficiency. However, due to the high cost, it is mainly applied to high-intensity operation environments such as large warehouses and distribution centers. Existing manual stackers usually only have the functions of traveling and goods lifting. When overweight goods are lifted to a certain height, there is a risk of slipping from the front end of the fork, which is likely to cause safety accidents. For this reason, some stackers are equipped with a locking device to fix the goods. Although this device can reduce the risk of goods falling, it increases the goods loading and unloading time. Summary of the Invention

[0003] Aiming at the above deficiencies existing in the prior art, the technical problem to be solved by the present invention is to provide a manual stacker that integrates lifting and tilting functions, and has a simple structure and low production cost.

[0004] The technical solution adopted by the present invention to solve its technical problems is a manual stacker, comprising: A frame; A loading shelf, the loading shelf includes a fork frame assembly and a fork assembly. The fork frame assembly is vertically arranged on the frame in a liftable manner, and the fork assembly is horizontally arranged on the frame and is rotatably connected to the fork frame assembly; A manual driving mechanism, the manual driving mechanism includes a first driving component arranged on the frame and a second driving component arranged on the loading shelf. The first driving component is connected to the fork frame assembly and can drive the fork frame assembly to drive the fork assembly to perform a lifting motion in the vertical direction. The second driving component abuts against the fork assembly and can drive the fork assembly to rotate relative to the fork frame assembly, and an angle greater than zero degree is formed between the rotated fork assembly and the horizontal line.

[0005] Further, the fork assembly includes a supporting structure and a rotating structure. The supporting structure is horizontally arranged on the vehicle frame. One side of the rotating structure is vertically connected to the supporting structure, and the other side is rotatably connected to the fork assembly. The second driving assembly includes a second manual operating member, a second driving member, and a linkage structure. The second manual operating member is connected to the second driving member and can drive the second driving member to act. The second driving member is fixedly arranged on the fork assembly and abuts against the linkage structure. The linkage structure is rotatably arranged on the fork assembly. One side of the linkage structure abuts against the second driving member, and the other side abuts against the rotating structure. When the second driving member acts, the linkage structure rotates and pushes the rotating structure to rotate synchronously. When the rotating structure rotates, one end of the supporting structure away from the rotating structure tilts upward or downward.

[0006] Further, a first mounting seat and a second mounting seat are arranged on the fork assembly. One end of the second driving member is fixed to the first mounting seat, and the other end extends toward the second mounting seat. The linkage structure includes a first linkage shaft, a rotating shaft, and a second linkage shaft arranged in sequence. The linkage structure abuts against the rotating structure through the first linkage shaft, is rotatably connected to the second mounting seat through the rotating shaft, and abuts against one side of the second driving member close to the second mounting seat through the second linkage shaft. When the second driving member acts, the second linkage shaft is stressed and rotates around the axis of the rotating shaft, and drives the first linkage shaft to rotate synchronously around the axis of the rotating shaft to push the rotating structure to rotate.

[0007] Further, the second mounting seat includes a first support arm and a second support arm arranged oppositely. The linkage structure includes a first connecting arm and a second connecting arm located outside or inside the first support arm and the second support arm respectively. One end of the first connecting arm and the second connecting arm extends horizontally toward the second driving member, and the other end bends downward toward the lower part of the rotating structure. Two ends of the first linkage shaft are respectively inserted into one ends of the first connecting arm and the second connecting arm close to the rotating structure. Two ends of the second linkage shaft are respectively inserted into one ends of the first connecting arm and the second connecting arm close to the second driving member. One end of the rotating shaft is rotatably inserted through the bending part of the first support arm and the first connecting arm, and the other end is rotatably inserted through the bending part of the second support arm and the second connecting arm.

[0008] Further, a limiting structure is also arranged between the first connecting arm and the second connecting arm. When the second linkage shaft rotates, the limiting structure moves synchronously. When the limiting structure moves to abut against the first support arm and / or the second support arm, it can limit the second linkage shaft from continuing to rotate in the original direction.

[0009] Furthermore, the fork support assembly includes a first cross beam and a second cross beam arranged in an up-and-down structure. There is a gap between the first cross beam and the second cross beam for installing the linkage structure. And on the side of the first cross beam facing the rotating structure, there is a mounting shaft longitudinally misaligned with the second cross beam. The rotating structure is rotatably connected to the mounting shaft. The first mounting seat is arranged on the first cross beam, and the second mounting seat is arranged on the second cross beam and longitudinally aligned with the first mounting seat.

[0010] Furthermore, the rotating structure includes a first rotating arm and a second rotating arm arranged side by side. The tops of the first rotating arm and the second rotating arm are respectively rotatably connected to the mounting shaft, and the bottoms are respectively vertically connected to the supporting structure. And there is a shielding structure between the first rotating arm and the second rotating arm. The projection of the shielding structure along the horizontal direction perpendicular to the axis of the mounting shaft can cover the linkage structure.

[0011] Furthermore, a first buffer member is provided on the side of the shielding structure facing the linkage structure, and / or second buffer members are provided on the sides of the first rotating arm and the second rotating arm facing the fork support assembly.

[0012] Furthermore, the vehicle frame includes a first bracket and a second bracket connected perpendicularly to each other. The second bracket is arranged vertically and has a slide rail arranged along its own length direction. The supporting structure is horizontally arranged on the first bracket. The fork support assembly is parallel to the second bracket and has a lifting structure slidably connected to the slide rail. The first driving assembly is arranged on the first bracket and connected to the fork support assembly, and can drive the lifting structure to move up and down along the length direction of the slide rail.

[0013] Furthermore, the first bracket includes a third cross beam arranged horizontally. The second bracket is also provided with a fourth cross beam arranged parallel to the third cross beam. A first connecting head is arranged on the fourth cross beam, and a second connecting head is arranged on the fork support assembly. The first driving assembly includes a first manual operating member, a first driving member, and a transmission structure. The first manual operating member is connected to the first driving member and can drive the first driving member to act. The first driving member is vertically arranged on the third cross beam. The transmission structure is arranged at the output end of the first driving member. And one end of the transmission structure is detachably connected to the first connecting head, and the other end is detachably connected to the second connecting head.

[0014] Compared with the prior art, the present invention has at least the following beneficial effects: 1. In the present invention, the loading rack includes a fork frame assembly and a fork assembly. The fork frame assembly is vertically and liftably arranged on the vehicle frame, and the fork assembly is horizontally arranged on the vehicle frame and is rotatably connected to the fork frame assembly. The manual driving mechanism includes a first driving assembly arranged on the vehicle frame and a second driving assembly arranged on the loading rack. The first driving assembly is connected to the fork frame assembly and can drive the fork frame assembly to drive the fork assembly to move up and down in the vertical direction. The second driving assembly abuts against the fork assembly and can drive the fork assembly to rotate relative to the fork frame assembly, and an angle greater than zero degree is formed between the fork assembly and the horizontal line after rotation. This design realizes the integrated control of the functions of lifting and tilting of the goods, enabling the operator to manually adjust the tilting angle of the fork assembly, thereby stably fixing the goods on the fork assembly, effectively preventing the goods from slipping during the handling process, and significantly improving the safety and stability during the operation. At the same time, this structure does not require the introduction of a complex electric control system, and the overall structure is simple and compact, which is not only beneficial to reducing the manufacturing cost of the equipment, but also convenient for later maintenance and use.

[0015] 2. In the present invention, a limiting structure is further provided between the first connecting arm and the second connecting arm. When the second linkage shaft rotates, the limiting structure moves synchronously, and when the limiting structure abuts against the first support arm and / or the second support arm, it can limit the second linkage shaft from continuing to rotate in the original direction. This design realizes the mechanical limiting control of the tilting angle of the fork assembly, ensuring that the supporting structure is tilted and adjusted within a safe angle range, avoiding potential safety hazards such as the slipping of goods and the instability of the structure caused by excessive angles, and significantly improving the operation safety and use reliability of the equipment. At the same time, this limiting structure adopts a mechanical contact limiting method, with a simple structure and reliable response, without the need for an additional control system, which is beneficial to reducing the manufacturing cost and enhancing the durability and maintenance convenience of the overall equipment.

[0016] 3. In the present invention, a first buffer member is provided on the side of the shielding structure facing the linkage structure, and second buffer members are provided on the sides of the first rotating arm and the second rotating arm facing the fork frame assembly. This design realizes the buffer protection of the moving contact parts between the rotating structure and the linkage structure and the fork frame assembly, thereby reducing the impact force and noise caused by hard contact, reducing component wear, and extending the service life of the equipment. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a manual stacker according to the present invention.

[0019] Figure 2 is an exploded view of a manual stacker according to the present invention.

[0020] Figure 3 is Figure 2 a schematic structural diagram from another perspective.

[0021] Figure 4 This is a schematic structural diagram of the connection between the fork support assembly and the second drive assembly in the present invention.

[0022] Figure 5 It is Figure 4 a sectional view of.

[0023] Figure 6 This is a schematic diagram of the inclined state of the fork assembly in the present invention.

[0024] In all the drawings, the same reference numerals represent the same technical features, specifically: 100, vehicle frame; 110, first support; 111, third cross beam; 112, support foot; 120, second support; 121, slide rail; 122, fourth cross beam; 123, first longitudinal beam; 124, second longitudinal beam; 200, fork support assembly; 210, first cross beam; 220, second cross beam; 230, mounting shaft; 240, lifting structure; 241, first mounting plate; 242, second mounting plate; 243, pulley; 250, connecting plate; 251, extension; 300, fork assembly; 310, supporting structure; 311, first fork; 312, second fork; 320, rotating structure; 321, first rotating arm; 322, second rotating arm; 323, shielding structure; 324, first buffer; 325, second buffer; 400, first drive assembly; 410, first manual operating member; 411, handle; 412, foot-operated member; 420, first drive member; 430, transmission structure; 431, sprocket mounting seat; 432, sprocket; 500, second drive assembly; 510, second manual operating member; 520, second drive member; 530, linkage structure; 531, first linkage shaft; 532, rotating shaft; 533, second linkage shaft; 534, first connecting arm; 535, second connecting arm; 600, first mounting seat; 601, vertical plate; 602, horizontal plate; 603, stiffening rib plate; 610, second mounting seat; 611, first support arm; 612, second support arm; 700, limiting structure; 800, first connection head; 810, second connection head; 900, first roller assembly; 910, second roller assembly. Detailed Embodiments

[0026] The following are specific embodiments of the present invention and, in conjunction with the drawings, further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0027] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, in the present invention, descriptions such as "first", "second", "one", etc. are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0029] In the present invention, unless otherwise clearly specified and defined, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0031] As Figures 1 to 6 shown, in this embodiment, a manual stacker includes: a frame 100; a load-carrying shelf, which includes a fork frame assembly 200 and a fork assembly 300. The fork frame assembly 200 is vertically arranged on the frame 100 in a liftable manner, and the fork assembly 300 is horizontally arranged on the frame 100 and is rotatably connected to the fork frame assembly 200; A manual driving mechanism, which includes a first driving component 400 provided on the vehicle frame 100 and a second driving component 500 provided on the goods-carrying shelf. The first driving component 400 is connected to the fork assembly 200 and can drive the fork assembly 200 to drive the fork components 300 to move up and down in the vertical direction. The second driving component 500 abuts against the fork components 300 and can drive the fork components 300 to rotate relative to the fork assembly 200, and an angle greater than zero degree is formed between the fork components 300 and the horizontal line after rotation. This design realizes the integrated control of the functions of goods lifting and tilting, enabling the operator to adjust the tilting angle of the fork components 300 manually, thereby stably fixing the goods on the fork components 300, effectively preventing the goods from slipping during handling, and significantly improving the safety and stability during the operation process. At the same time, this structure does not need to introduce a complex electric control system, and the overall structure is simple and compact, which not only helps to reduce the manufacturing cost of the equipment, but also facilitates the later maintenance and use.

[0032] Specifically, as Figures 1 to 6 shown, in this embodiment, the vehicle frame 100 serves as the main load-bearing structure of the manual stacker and is the basic support component of the entire equipment, used for installing and fixing the fork assembly 200, the goods-carrying shelf and the manual driving mechanism, and bearing all the loads during the operation of the goods and the whole machine.

[0033] In this embodiment, the vehicle frame 100 includes a first support 110 and a second support 120 which are perpendicularly connected to each other. Among them, the first support 110 is horizontally arranged and serves as the main support platform of the equipment, used for carrying the goods-carrying shelf, the manual driving mechanism and related components; the second support 120 is vertically installed at one end of the first support 110 and forms a stable L-shaped structure with it, thereby enhancing the rigidity and bending resistance of the overall frame.

[0034] In this embodiment, the first support 110 includes two strip-shaped support feet 112 arranged side by side horizontally, and a third cross beam 111 connected to one end of the two support feet 112. The two support feet 112 are parallel to each other and extend along the front-back direction of the manual stacker, constituting the main bottom support structure of the equipment; the third cross beam 111 is horizontally arranged and perpendicularly connected to one end of the two support feet 112, and the three together form a stable U-shaped frame structure. This design not only improves the overall rigidity and load-bearing capacity of the first support 110, but also provides a reliable installation foundation for subsequent components.

[0035] In this embodiment, the connection between the third cross beam 111 and the support feet 112 is fixed by welding or detachably connected by fasteners. Among them, the welded connection structure has relatively high overall strength and stability and is suitable for application scenarios with high requirements for structural rigidity; while the method of using fasteners such as bolts and nuts for detachable connection facilitates the assembly, disassembly and later maintenance of the equipment, improving the modularity and flexibility of use of the structure.

[0036] In this embodiment, a first roller assembly 900 is further provided at one end of the support foot 112 away from the third cross beam 111. The first roller assembly 900 includes a first fixed seat and a first roller rotatably provided on the first fixed seat, and is used to provide a moving support for the manual stacker, so that the equipment can be flexibly pushed on the ground.

[0037] In this embodiment, the second bracket 120 includes a first longitudinal beam 123 and a second longitudinal beam 124 respectively vertically provided on the support foot 112. The two are arranged side by side in the left-right direction of the manual stacker and are parallel to each other. Both the first longitudinal beam 123 and the second longitudinal beam 124 extend in the vertical direction, and slide rails 121 arranged along their own length directions are provided on their inner sides or outer sides, and are used to form a sliding fit with the lifting structure 240 of the fork assembly 200, so as to realize the stable lifting movement of the load-carrying rack.

[0038] Preferably, in this embodiment, the slide rail 121 is a rectangular guide groove structure opened on the inner sides of the first longitudinal beam 123 and the second longitudinal beam 124. This design has a mature processing technology, is convenient for assembling slider or roller assemblies, can effectively limit the displacement of the fork assembly 200 in the horizontal direction, and improves the guiding performance and torsional stiffness of the overall structure.

[0039] In this embodiment, a fourth cross beam 122 parallel to the third cross beam 111 is further provided on the second bracket 120. The fourth cross beam 122 is vertically connected to the middle positions of the first longitudinal beam 123 and the second longitudinal beam 124, forming a stable frame structure with the two, and further enhancing the overall rigidity and anti-deformation ability of the second bracket 120. Moreover, the fourth cross beam 122 not only plays a role in strengthening the structure, but also serves as the installation base for functional components. Specifically, a first connector 800 is provided on the fourth cross beam 122, and the first connector 800 is used to be detachably connected to the chain, so as to assist the first drive assembly 400 to realize the drive control of the lifting movement of the fork assembly 200.

[0040] In this embodiment, the first connector 800 includes a screw rod detachably vertically penetrating through the fourth cross beam 122, and two groups of fastening nuts respectively located on the upper and lower sides of the fourth cross beam 122 and rotatably sleeved on the screw rod, and an installation hole detachably connected to the chain is provided at the top of the screw rod, so as to realize the transmission connection between the drive assembly and the fork assembly 200.

[0041] Preferably, in this embodiment, on the side of the first longitudinal beam 123 and the second longitudinal beam 124 facing away from the support feet 112, there is also provided a second roller assembly 910, which includes a second fixed seat detachably connected to the first longitudinal beam 123 or the second longitudinal beam 124, and a second roller rotatably arranged on the second mounting seat 610, for providing auxiliary support when the manual stacker transports heavy goods, improving the overall operation stability of the equipment and the fluency of operation. This design can not only effectively share the vehicle load and reduce the pressure on the first rollers, but also play a guiding and stabilizing role during the lifting and lowering process of the fork assembly 300, preventing the equipment from tilting or shaking, thereby improving operation safety and work efficiency.

[0042] In this embodiment, the load rack includes a fork frame assembly 200 and a fork assembly 300. Among them, the fork frame assembly 200 is vertically arranged on the support feet 112 of the vehicle frame 100 in a liftable manner and is arranged parallel to the second bracket 120 to ensure good guiding and structural stability during the lifting process. And the fork frame assembly 200 has a lifting structure 240 slidably connected to the slide rail 121 provided on the second bracket 120, so that the fork frame assembly 200 can move smoothly up and down along the length direction of the slide rail 121.

[0043] In this embodiment, the fork frame assembly 200 includes a first cross beam 210 and a second cross beam 220 arranged in a downward structure and aligned with each other, and two connecting plates 250 located at both ends of the first cross beam 210 and the second cross beam 220. The first cross beam 210 and the second cross beam 220 are fixedly connected through the connecting plates 250 on both sides to form a rectangular frame structure, having good structural strength and load-bearing capacity. Among them, the first cross beam 210 is arranged above, and the second cross beam 220 is arranged below, with a certain distance reserved between the two to form a gap for installing the linkage structure 530. This gap design provides sufficient assembly space and movement freedom for the linkage structure 530, ensuring that it can move flexibly and stably during the tilting process of the fork assembly 300 without being interfered by the fork frame assembly 200 itself.

[0044] Preferably, in this embodiment, the first cross beam 210 and the second cross beam 220 are profile structures with the same cross-sectional shape, such as rectangular tubes or square steels, having good processability and welding performance; the connecting plates 250 are respectively fixedly connected to the two cross beams by welding or fasteners to form a solid whole.

[0045] In this embodiment, on the side of the top of the connecting plate 250 facing away from the second bracket 120, it protrudes towards the direction close to the fork assembly 300 and forms an extension part 251 for arranging the mounting shaft 230. This design not only provides a solid support basis for the mounting shaft 230, but also makes the rotation center of the fork assembly 300 move forward reasonably, which is more conducive to realizing the movement coordination and stability of the supporting structure 310 during the tilting process.

[0046] In this embodiment, on the top of the first cross beam 210 facing the rotating structure 320, there is an installation shaft 230 longitudinally misaligned with the second cross beam 220. The installation shaft 230 is horizontally arranged and parallel to the first cross beam 210, serving as the rotatable connection fulcrum of the rotating structure 320 to achieve the rotatable connection of the fork assembly 300 relative to the fork frame assembly 200. This misaligned arrangement not only avoids the movement interference with other structural components of the fork frame assembly 200, but also optimizes the movement trajectory of the fork assembly 300 during the tilting process, improving the rationality of the overall structure's spatial layout and the coordination of actions.

[0047] Preferably, the installation shaft 230 is detachably fixed on the extension part 251 of the connecting plate 250, and its two ends are respectively in rotatable connection and cooperation with the fork assembly 300, enabling the fork assembly 300 to swing around the installation shaft 230 under the action of the second driving assembly 500, thereby realizing the upward or downward tilting of the end of the supporting structure 310 far from the rotating structure 320.

[0048] In this embodiment, the lifting structure 240 includes a first mounting plate 241 and a second mounting plate 242 arranged side by side, and a plurality of pulleys 243 rotatably arranged on the first mounting plate 241 and the second mounting plate 242. Among them, the first mounting plate 241 and the second mounting plate 242 are in a T-shaped structure, and their narrow sides are fixedly clamped between the first cross beam 210 and the second cross beam 220 to form a stable support and positioning structure; the wide sides extend outward for mounting the pulleys 243. The pulleys 243 are arranged on the sides of the first mounting plate 241 and the second mounting plate 242 facing the slide rail 121 and are slidably embedded in the slide rail 121, thereby realizing the guiding movement of the fork frame assembly 200 in the vertical direction. This design can not only bear the overall weight of the fork frame assembly 200 and the load rack, but also form a good guiding cooperation with the slide rail 121 to ensure the stable operation of the fork frame assembly 200 during the lifting process. At the same time, the structural form of the T-shaped mounting plate enhances the connection strength between the lifting assembly and the fork frame assembly 200, improving the durability and reliability of the equipment under frequent lifting operations.

[0049] Preferably, the pulley 243 is made of a material with excellent wear resistance and load-bearing performance and is rotatably installed between the two mounting plates through a rotating shaft to reduce the frictional resistance and improve the smoothness and operational fluency of the lifting process.

[0050] In this embodiment, a second connector 810 is further provided on the fork support assembly 200. The second connector 810 is used for detachably connecting with a chain, so as to assist the first drive assembly 400 to realize the drive control of the lifting movement of the fork support assembly 200. Through the cooperation of the first connector 800 and the second connector 810, when an operator applies a force, the chain can be driven to drive the fork support assembly 200 to move up and down along the slide rail 121, thereby realizing the lifting function of the cargo rack.

[0051] In this embodiment, the second connector 810 includes a fixed seat vertically and fixedly arranged on the side of the second cross beam 220 facing the second support 120, and a screw rod detachably inserted through the fixed seat. Preferably, the screw rod is vertically arranged and is threadedly connected to the fixed seat. And an installation hole for connecting with the end of the chain is provided at the top of the screw rod, so that the chain can be quickly connected or separated from the second connector 810 through the installation hole, effectively improving the convenience of assembly, debugging and later maintenance.

[0052] In this embodiment, the fork assembly 300 is horizontally arranged on the support feet 112 of the first support 110, located in the front area of the manual stacker, and is used for carrying goods; and the fork assembly 300 is rotatably connected to the fork support assembly 200, so that the fork assembly 300 can rotate relative to the fork support assembly 200 and form a certain inclination angle, thereby realizing the inclination adjustment function of the goods. This design enables the operator to control the fork assembly 300 to swing around the installation shaft 230 through the second drive assembly 500 according to the actual handling requirements, so that one end of the supporting structure 310 tilts upward or downward, thereby adjusting the placement posture of the goods to avoid the goods from slipping during the handling process, and significantly improving the safety and stability during the operation process.

[0053] In this embodiment, the fork assembly 300 includes a supporting structure 310 and a rotating structure 320. Among them, the supporting structure 310 is horizontally arranged on the vehicle frame 100, one side of the rotating structure 320 is vertically connected to the supporting structure 310, and the other side is rotatably connected to the installation shaft 230 of the fork support assembly 200, thereby realizing the rotatable connection of the fork assembly 300 relative to the fork support assembly 200.

[0054] In this embodiment, the supporting structure 310 includes a first fork 311 and a second fork 312 arranged side by side. The two are symmetrically arranged along the left - right direction of the manual stacker, are respectively located directly above the two support feet 112, and extend along the front - back direction for carrying goods. And the lengths and widths of the first fork 311 and the second fork 312 are both greater than the corresponding dimensions of the support feet 112 to ensure that goods of different specifications and dimensions can be stably supported, expanding the applicable range of the equipment.

[0055] In this embodiment, the rotating structure 320 includes a first rotating arm 321 and a second rotating arm 322 arranged side by side. The tops of the first rotating arm 321 and the second rotating arm 322 are rotatably sleeved on the mounting shaft 230 through movable holes, so as to realize free swinging around the mounting shaft 230; their bottoms are respectively vertically and fixedly connected to one side of the first fork 311 and the second fork 312 in the supporting structure 310 close to the fork assembly 200, so as to drive the first fork 311 and the second fork 312 to move synchronously. This design enables the rotating arm to smoothly drive the fork to complete the tilting action under the action of the second driving component 500.

[0056] In this embodiment, a shielding structure 323 is provided between the first rotating arm 321 and the second rotating arm 322. The projection of the shielding structure 323 along the axis direction of the horizontal vertical mounting shaft 230 can cover the linkage structure 530. That is, a shield is formed directly in front of the linkage structure 530 to effectively protect the linkage structure 530 located between the rotating arms, prevent external dust, debris or liquid from entering the transmission area, and thus avoid problems such as movement jamming and increased wear caused by foreign object intrusion, improving the stability and service life of the equipment operation.

[0057] Preferably, in this embodiment, the shielding structure 323 is composed of three rectangular plates arranged side by side. The size of the middle rectangular plate is smaller than that of the two side rectangular plates. This design reduces the volume of the middle shielding area while ensuring effective shielding and coverage of the linkage structure 530, reducing the overall weight of the shielding structure 323 and saving material costs.

[0058] In this embodiment, a first buffer 324 is provided on the side of the shielding structure 323 facing the linkage structure 530. The first buffer 324 is in the shape of a rectangular plate and is vertically attached to the shielding structure 323. When the rotating structure 320 drives the shielding structure 323 to move, the first buffer 324 can come into contact with the linkage structure 530, absorb the collision energy through its own elastic deformation, thus playing a role in buffering and shock absorption, reducing noise and protecting the linkage structure 530, effectively avoiding hard collisions between the rotating structure 320 and the linkage structure 530, improving the smoothness of equipment operation and operation comfort, and at the same time helping to extend the service life of key components and enhance the durability and reliability of the manual stacker as a whole.

[0059] In this embodiment, a second buffer member 325 is provided on one side of the first rotating arm 321 and / or the second rotating arm 322 facing the fork assembly 200. The second buffer member 325 is in the shape of a disc and is an elastomeric member with a certain thickness, and is used to absorb impact energy through its own elastic deformation when the rotating arm comes into contact with the fork assembly 200. This design effectively reduces the rigid collision between the rotating arm and the fork assembly 200, thereby reducing the vibration and noise generated during the operation of the equipment, and improving the operation stability and use comfort.

[0060] In this embodiment, the manual driving mechanism includes a first driving assembly 400 and a second driving assembly 500 provided on the vehicle frame 100. Among them, the first driving assembly 400 is connected to the fork assembly 200 and is used to drive the fork assembly 200 to move up and down in the vertical direction, and drive the fork assembly 300 connected thereto to lift and lower synchronously; the second driving assembly 500 is in contact with the fork assembly 300 and is used to drive the fork assembly 300 to rotate relative to the fork assembly 200, and make the fork assembly 300 form an angle greater than zero with the horizontal line after rotation, so as to realize the function of adjusting the loading angle of the goods. This design realizes the integrated control of the two functions of lifting and tilting. The operator can independently complete the lifting action and tilting adjustment of the goods by operating the first driving assembly 400 and the second driving assembly 500 respectively. It not only retains the advantages of the simple structure and low cost of the traditional manual stacker, but also expands its functional applicability, and improves the safety and stability of the equipment when handling irregularly shaped, center-of-gravity-offset or easily-sliding goods. In addition, with its simple and compact structural advantages, this manual driving mechanism reduces the space occupation, making it applicable to the stacking and transportation of various pallets and items.

[0061] In this embodiment, the first driving assembly 400 is vertically arranged on the third cross beam 111 of the first bracket 110 and is in transmission connection with the fork assembly 200, and is used to drive the fork assembly 200 and the lifting structure 240 thereon to perform stable lifting and lowering movements along the length direction of the slide rail 121 of the second bracket 120.

[0062] In this embodiment, the first driving assembly 400 includes a first manual operating member 410, a first driving member 420, and a transmission structure 430. Among them, the first manual operating member 410 is connected to the first driving member 420 and can drive the first driving member 420 to act. The first driving member 420 is vertically arranged on the third cross beam 111. The transmission assembly is arranged at the output end of the first driving member 420, and one end of the transmission structure 430 is detachably connected to the first connector 800, and the other end is detachably connected to the second connector 810 to form a complete power transmission path. When an operator operates the first manual operating member 410, the first driving member 420 generates power output, drives the forklift assembly 200 to move up and down along the length direction of the slide rail 121 through the transmission structure 430, and then drives the fork assembly 300 connected thereto to lift and lower synchronously.

[0063] In this embodiment, the first manual operating member 410 includes a handle 411 and a foot pedal 412. Among them, one end of the handle 411 is connected to the first driving member 420, and the other end extends away from the ground and is arranged obliquely to facilitate the operator to hold and apply a pulling force. One end of the foot pedal 412 is arranged between the handle 411 and the first driving member 420, and the other end extends towards the ground and is also arranged obliquely to adapt to the foot stepping action. This design can adapt to different operating postures: when the operator stands or walks, the handle 411 can be used for manual lifting; when greater driving force or long-term operation is required, the foot can step on the foot pedal 412 to achieve a more labor-saving operation mode. This dual-mode operation structure not only improves the applicability and human-machine interaction performance of the equipment, but also enhances the flexibility and practicality of the manual stacker in different operating scenarios.

[0064] In this embodiment, the first driving member 420 is a power conversion device with stable force increasing characteristics such as a jack or a hydraulic pump, which can convert the small acting force input by the manual operating member into an output force sufficient to drive the lifting of the load rack, thereby effectively improving the load-bearing capacity and operating efficiency of the equipment. It should be noted that the working principle of the first manual operating member 410 driving the first driving member 420 is the same as that of the prior art and will not be elaborated here.

[0065] In this embodiment, the transmission structure 430 includes a sprocket mounting seat 431 detachably provided at the output end of the first driving member 420, a sprocket 432 rotatably provided within the sprocket mounting seat 431, and a chain (not shown in the figure) sleeved on the sprocket 432. One end of the chain is detachably connected to the mounting hole of the first connector 800, and the other end is detachably connected to the mounting hole of the second connector 810, thereby forming a complete mechanical transmission path. When an operator operates the first manual operating member 410 (such as the handle 411 or the foot-operated member 412) to actuate the first driving member 420, the output end of the driving member drives the sprocket 432 to rise or fall. Since one end of the chain is fixed, the chain will slide on the sprocket 432, thereby pulling the fork assembly 200 to move up and down along the direction of the slide rail 121 and driving the fork assembly 300 to lift and lower synchronously. This design not only realizes the efficient power transmission between the first driving member 420 and the fork assembly 200, but also has good adaptability and maintainability. At the same time, chain drive has the advantages of simple structure, strong load-bearing capacity, stable operation, etc., and is suitable for manual stackers with frequent lifting operations, effectively improving the use efficiency and reliability of the equipment.

[0066] In this embodiment, the second driving assembly 500 includes a second manual operating member 510, a second driving member 520, and a linkage structure 530. Among them, the second manual operating member 510 is connected to the second driving member 520 and can drive the second driving member 520 to act; the second driving member 520 is fixedly provided on the fork assembly 200 and abuts against the linkage structure 530 for converting the operating force into a pushing or pulling action; the linkage structure 530 is rotatably provided on the fork assembly 200, one side of which abuts against the second driving member 520, and the other side abuts against the rotating structure 320, forming a complete mechanical transmission path. When an operator operates the second manual operating member 510, the second driving member 520 generates power output, pushing the linkage structure 530 to rotate around its fulcrum and further pushing the rotating structure 320 to rotate synchronously. As the rotating structure 320 swings around the mounting shaft 230, the supporting structure 310 fixedly connected thereto also tilts accordingly, causing one end of the supporting structure 310 away from the rotating structure 320 to tilt upward or downward, thereby realizing the function of adjusting the loading angle of the goods.

[0067] In this embodiment, the second manual operating member 510 has a cylindrical structure, one end of which is connected to the second driving member 520, and the other end extends horizontally in a direction away from the fork assembly 200, forming an operating handle that is convenient for an operator to hold. This design enables the operator to conveniently apply a pressing force or a pulling force to drive the second driving member 520 to act, thereby realizing the adjustment of the tilting angle of the fork assembly 300.

[0068] In this embodiment, the second driving member 520 is vertically arranged and is a power conversion device with stable force-increasing characteristics such as a jack, a hydraulic pump, or a lever force-increasing mechanism. It is fixedly arranged on the fork assembly 200 and abuts against the linkage structure 530, and is used to convert the manually input operating force into the power to drive the linkage structure 530 to rotate. Through this driving member, a large driving force can be achieved with a small operating force, improving the labor-saving effect and response sensitivity during the tilting adjustment process. It should be noted that the working principle of the second manual operating member 510 driving the second driving member 520 is the same as that of a jack in the prior art, and will not be elaborated here.

[0069] To achieve the convenient installation and stable support of the second driving assembly 500, in this embodiment, a first mounting seat 600 and a second mounting seat 610 are further provided on the fork assembly 200. Among them, the first mounting seat 600 is arranged on the first cross beam 210 of the fork assembly 200, and the second mounting seat 610 is arranged on the second cross beam 220 and is aligned with the first mounting seat 600 in the longitudinal direction, thereby forming upper and lower corresponding and structurally stable mounting fulcrums. Preferably, the first mounting seat 600 and the second mounting seat 610 can be fixed to the corresponding cross beams by welding, bolt connection, etc.

[0070] In this embodiment, the first mounting seat 600 includes two vertical plates 601 welded to the first cross beam 210 at a vertical interval, and a horizontal plate 602 perpendicularly connected to the two vertical plates 601. Moreover, the end of the horizontal plate 602 far from the vertical plate 601 is connected to the output end of the second driving member 520 to form a stable support structure. This design has good load-bearing capacity, provides a solid mounting foundation for the second driving member 520, and ensures its stable position and reliable operation during frequent operations. The reasonable distance between the two vertical plates 601 is also beneficial to improving the bending resistance performance and force uniformity of the overall structure.

[0071] Preferably, in this embodiment, a reinforcing rib plate 603 is further provided on the side of the horizontal plate 602 facing away from the vertical plate 601. The reinforcing rib plate 603 extends along the length direction of the horizontal plate 602 and is used to enhance the structural strength of the connection part between the horizontal plate 602 and the second driving member 520, prevent deformation or fracture due to long-term stress, and further improve the durability and safety of the equipment.

[0072] In this embodiment, the second mounting seat 610 includes a first support arm 611 and a second support arm 612 that are oppositely arranged and welded to the second cross beam 220. The first support arm 611 and the second support arm 612 have the same structure, are both inclined, and there is a gap between them to adapt to the installation and movement requirements of the second driving member 520.

[0073] In this embodiment, the output end (piston end) of the second driving member 520 is connected to the cross plate 602 of the first mounting seat 600. Specifically, structures such as bolt fixation, pin shaft hinging, or flange connection can be adopted to ensure stable power transmission. The other end (cylinder body end) of the second driving member 520 extends in the direction close to the second mounting seat 610 and forms a abutting fit with the outer surface of the second linkage shaft 533 provided on the linkage structure 530. When the operator manipulates the second manual operating member 510 to drive the second driving member 520 to act, its output end pushes the cross plate 602, and drives the body of the second driving member 520 to move downward under the reaction force of the cross plate 602, so that its end is in close contact with the second linkage shaft 533. At this time, as the second driving member 520 continues to apply a thrust, this thrust will directly act on the second linkage shaft 533 and further be transmitted to the linkage structure 530 connected thereto, thereby driving the linkage structure 530 to rotate around the fulcrum. This design realizes efficient power transmission between the second driving member 520 and the linkage structure 530, not only improving the operation convenience and control accuracy of the manual stacker during the cargo tilting adjustment process, but also enhancing the structural reliability and durability of the equipment under frequent use.

[0074] In this embodiment, the linkage structure 530 includes a first linkage shaft 531, a rotating shaft 532, and a second linkage shaft 533 arranged in sequence, forming an integral lever-type transmission assembly with the rotating shaft 532 as the fulcrum. Among them, the first linkage shaft 531 is provided at one end of the linkage structure 530 and abuts against the rotating structure 320; the rotating shaft 532 is located between the first linkage shaft 531 and the second linkage shaft 533 and serves as the rotation fulcrum of the entire linkage structure 530; the second linkage shaft 533 is provided at the other end and abuts against the side of the second driving member 520 close to the second mounting seat 610. When the operator manipulates the second manual operating member 510 to drive the second driving member 520 to act, the second driving member 520 applies a thrust to the second linkage shaft 533, causing the second linkage shaft 533 to rotate around the axis of the rotating shaft 532 under the force. Since the linkage structure 530 is integrally and rigidly connected, the first linkage shaft 531 also rotates synchronously around the rotating shaft 532 and pushes the rotating structure 320 in abutment therewith to swing. As the rotating structure 320 swings, it can drive the supporting structure 310 fixedly connected thereto to tilt around the mounting shaft 230, so that the end of the fork away from the rotating structure 320 moves up or down, thereby realizing controllable adjustment of the cargo carrying angle. This linkage process has a rapid response and stable transmission, and can effectively meet the requirements of the manual stacker for adjusting the cargo attitude under different working conditions.

[0075] In this embodiment, the linkage structure 530 further includes a first connecting arm 534 and a second connecting arm 535 respectively located outside or inside the first support arm 611 and the second support arm 612. One end of the first connecting arm 534 and the second connecting arm 535 extends horizontally towards the second driving member 520, and the other end bends downward towards the lower part of the rotating structure 320. Both ends of the first linkage shaft 531 are respectively inserted into one end of the first connecting arm 534 and the second connecting arm 535 close to the rotating structure 320, for realizing the abutting fit with the rotating structure 320; both ends of the second linkage shaft 533 are respectively inserted into one end of the first connecting arm 534 and the second connecting arm 535 close to the second driving member 520, for receiving the power input from the second driving member 520; one end of the rotating shaft 532 is rotatably inserted through the bending part of the first support arm 611 and the first connecting arm 534, and the other end is rotatably inserted through the bending part of the second support arm 612 and the second connecting arm 535, so that the entire linkage structure 530 realizes a swinging motion centered on the rotating shaft 532. This design can not only efficiently transmit the thrust applied by the second driving member 520 to the rotating structure 320, but also optimize the spatial layout through the bending design of the connecting arms, avoid interference with other components, and at the same time enhance the rigidity and motion stability of the overall structure. In addition, it also has the advantages of simple structure, low manufacturing cost, and convenient assembly.

[0076] Preferably, in this embodiment, the first connecting arm 534 and the second connecting arm 535 are symmetrically arranged and made of high-strength metal materials to ensure good load-bearing capacity and anti-fatigue performance under frequent operations.

[0077] In this embodiment, a limiting structure 700 is further provided between the first connecting arm 534 and the second connecting arm 535. When the second linkage shaft 533 rotates, the limiting structure 700 moves synchronously; when the limiting structure 700 moves to abut against the first support arm 611 and / or the second support arm 612, it can limit the second linkage shaft 533 from continuing to rotate in the original direction, thereby effectively preventing the structural damage or action out of control of the linkage structure 530 caused by over-travel. This design realizes the mechanical limit control of the tilt angle of the forklift component 300, ensures that the supporting structure 310 is tilted and adjusted within a safe angle range, avoids safety hazards such as cargo slipping and structural instability caused by too large an angle, and significantly improves the operation safety and use reliability of the equipment. At the same time, the limiting structure 700 adopts a mechanical contact limiting method, which has a simple structure, reliable response, and does not require an additional control system, which is beneficial to reducing the manufacturing cost and improving the durability and maintenance convenience of the overall equipment.

[0078] In this embodiment, the limiting structure 700 is a limiting block, a limiting rod or a limiting protrusion with a buffering function. Preferably, the limiting structure 700 is an inclined limiting block, one end of which is welded to the inner wall of the first connecting arm 534 and the other end is welded to the inner wall of the second connecting arm 535, thus forming a reinforced limiting assembly spanning between the two connecting arms. This design not only enhances the structural strength between the first connecting arm 534 and the second connecting arm 535, but also effectively expands the contact area between them and the first support arm 611 and the second support arm 612. During the limiting moment, the acting force can be dispersed, avoiding structural deformation or wear caused by local stress concentration, and improving the safety and durability of the equipment operation.

[0079] In this embodiment, the inclination angle can be adaptively designed according to the movement trajectory of the linkage structure 530 to ensure accurate contact with the first support arm 611 and / or the second support arm 612 during the linkage process, so as to achieve a reliable limiting function.

Claims

1. A manual stacker, characterized in that, Comprising: Frame; Carrier shelf, the carrier shelf includes a fork frame assembly and a fork assembly. The fork frame assembly is vertically arranged on the frame in a liftable manner. The fork assembly is horizontally arranged on the frame and is rotatably connected to the fork frame assembly; Manual driving mechanism, the manual driving mechanism includes a first driving component arranged on the frame and a second driving component arranged on the carrier shelf. The first driving component is connected to the fork frame assembly and can drive the fork frame assembly to drive the fork assembly to move up and down in the vertical direction. The second driving component abuts against the fork assembly and can drive the fork assembly to rotate relative to the fork frame assembly. And after the fork assembly rotates, an angle greater than zero degree is formed between it and the horizontal line.

2. A manual stacker according to claim 1, characterized in that, The fork assembly includes a supporting structure and a rotating structure. The supporting structure is horizontally arranged on the frame. One side of the rotating structure is vertically connected to the supporting structure, and the other side is rotatably connected to the fork frame assembly. The second driving component includes a second manual operating part, a second driving part and a linkage structure. The second manual operating part is connected to the second driving part and can drive the second driving part to act. The second driving part is fixedly arranged on the fork frame assembly and abuts against the linkage structure. The linkage structure is rotatably arranged on the fork frame assembly. One side of it abuts against the second driving part, and the other side abuts against the rotating structure; when the second driving part acts, the linkage structure rotates and pushes the rotating structure to rotate synchronously. And when the rotating structure rotates, one end of the supporting structure away from the rotating structure tilts up or down.

3. A manual stacker according to claim 2, characterized in that, A first mounting seat and a second mounting seat are arranged on the fork frame assembly. One end of the second driving part is fixed to the first mounting seat, and the other end extends towards the second mounting seat. The linkage structure includes a first linkage shaft, a rotating shaft and a second linkage shaft arranged in sequence. The linkage structure abuts against the rotating structure through the first linkage shaft, is rotatably connected to the second mounting seat through the rotating shaft, and abuts against one side of the second driving part close to the second mounting seat through the second linkage shaft; When the second driving part acts, the second linkage shaft is stressed and rotates around the axis of the rotating shaft, and drives the first linkage shaft to rotate synchronously around the axis of the rotating shaft to push the rotating structure to rotate.

4. The manual stacker according to claim 3, wherein, The second mounting seat includes a first support arm and a second support arm arranged oppositely. The linkage structure includes a first connecting arm and a second connecting arm respectively located outside or inside the first support arm and the second support arm. One end of the first connecting arm and the second connecting arm extends horizontally towards the second driving member, and the other end bends downward towards the lower part of the rotating structure. Both ends of the first linkage shaft are respectively inserted into one end of the first connecting arm and the second connecting arm close to the rotating structure. Both ends of the second linkage shaft are respectively inserted into one end of the first connecting arm and the second connecting arm close to the second driving member. One end of the rotating shaft is rotatably inserted through the bending part of the first support arm and the first connecting arm, and the other end is rotatably inserted through the bending part of the second support arm and the second connecting arm.

5. A manual stacker according to claim 4, characterized in that, A limiting structure is further provided between the first connecting arm and the second connecting arm. When the second linkage shaft rotates, the limiting structure moves synchronously; when the limiting structure moves to abut against the first support arm and / or the second support arm, it can limit the second linkage shaft from continuing to rotate in the original direction.

6. A manual stacker according to claim 3, characterized in that, The fork assembly includes a first cross beam and a second cross beam arranged in an up-and-down structure. There is a gap for installing the linkage structure between the first cross beam and the second cross beam. And an installation shaft longitudinally misaligned with the second cross beam is provided on one side of the first cross beam facing the rotating structure. The rotating structure is rotatably connected to the installation shaft. The first mounting seat is arranged on the first cross beam, and the second mounting seat is arranged on the second cross beam and is longitudinally aligned with the first mounting seat.

7. The manual stacker according to claim 6, wherein, The rotating structure includes a first rotating arm and a second rotating arm arranged side by side. The tops of the first rotating arm and the second rotating arm are respectively rotatably connected to the installation shaft, and the bottoms are respectively vertically connected to the supporting structure. And a shielding structure is provided between the first rotating arm and the second rotating arm. The projection of the shielding structure along the horizontal direction perpendicular to the axis of the installation shaft can cover the linkage structure.

8. A manual stacker according to claim 7, characterized in that, A first buffer member is provided on one side of the shielding structure facing the linkage structure, and / or a second buffer member is provided on one side of the first rotating arm and the second rotating arm facing the fork assembly.

9. A manual stacker according to claim 2, characterized in that, The vehicle frame includes a first bracket and a second bracket connected perpendicular to each other. The second bracket is vertically arranged and has a slide rail arranged along its own length direction. The supporting structure is horizontally arranged on the first bracket. The fork assembly is parallel to the second bracket and has a lifting structure slidably connected to the slide rail. The first driving assembly is arranged on the first bracket and connected to the fork assembly, and can drive the lifting structure to move up and down along the length direction of the slide rail.

10. A manual stacker according to claim 9, characterized in that, The first bracket includes a third cross beam arranged horizontally. A fourth cross beam parallel to the third cross beam is further provided on the second bracket. A first connector is provided on the fourth cross beam. A second connector is provided on the fork assembly. The first driving assembly includes a first manual operating member, a first driving member and a transmission structure. The first manual operating member is connected to the first driving member and can drive the first driving member to act. The first driving member is vertically arranged on the third cross beam. The transmission structure is arranged at the output end of the first driving member. One end of the transmission structure is detachably connected to the first connector, and the other end is detachably connected to the second connector.

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