Stacking crane, gantry structure and method of operation thereof

Abstract

The present application belongs to the technical field of hoisting equipment, and particularly relates to a device for hoisting and conveying containers, and more particularly to a stacker crane, a portal structure and a working method thereof, wherein the portal structure is provided with a buffer assembly composed of a connecting plate, a guide rod, a buffer plate and a return spring, when the oil supply pipe shakes, the buffer plate can pull the return spring to compress the return spring, the kinetic energy of the shaking is converted into the potential energy of the spring and is absorbed, thereby effectively buffering the shaking, meanwhile, a rotary connecting joint is arranged on the buffer plate, the oil supply pipe is communicated with the oil supply interface through the rotary connecting joint, when the oil supply pipe shakes, the rotary connecting joint can rotate, the rigid bending angle and the bending frequency of the oil supply pipe at the interface are reduced, the fatigue damage risk of the pipeline is further reduced, the smooth flow of the oil in the oil supply pipe is ensured, the stability of the hydraulic power transmission is ensured, and the lifting action is more stable.

Description

Technical Field

[0001] This invention belongs to the field of lifting equipment technology, specifically relating to equipment for lifting and transporting containers, and more particularly to a stacker, gantry structure and its working method. Background Technology

[0002] As a key component of lifting and transport machinery, the gantry structure is typically equipped with a liftable hoisting assembly. To provide power to the hydraulic cylinders on the hoisting assembly, an oil supply pipe needs to be installed that rises and falls along with the hoisting assembly.

[0003] In related technologies, the oil supply pipe is typically fixed at one end to the top or bottom of the gantry, and the other end is connected to the lifting assembly. When the lifting assembly is used for lifting operations or the equipment is moved, the oil supply pipe will frequently extend, retract, and swing. Especially when the equipment is started or stopped, or when traveling on uneven roads, the oil supply pipe is prone to violent shaking. The stress generated by this shaking will concentrate at the interface between the oil supply pipe and the lifting assembly, causing the pipeline to bend and twist repeatedly at this point. Long-term bending stress can easily cause fatigue damage to the oil supply pipe at the interface, such as pipe wall rupture, loose joints, or even leakage. This not only affects the stability of the hydraulic system, leading to unstable lifting operations, but also causes oil contamination and safety hazards. In addition, excessive bending at the interface can also hinder the smooth flow of oil to a certain extent, affecting the power transmission efficiency.

[0004] Therefore, how to avoid fatigue at the interface between the oil supply pipe and the hoisting components caused by shaking, while also avoiding excessive bending at the interface, is a technical problem that urgently needs to be solved.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of the present application concept, and therefore, the above description is not considered to constitute prior art information. Summary of the Invention

[0006] This disclosure provides at least one forklift, a gantry structure, and a method for operating the same.

[0007] In a first aspect, embodiments of this disclosure provide a gantry structure, including: Mast body; The hoisting assembly is slidably mounted on the gantry body; A reel is provided at the top of the gantry body; The oil supply pipe has one end wound around the take-up reel; The other end of the oil supply pipe is connected to the oil supply interface of the hoisting assembly via a buffer assembly; The buffer component includes: The connecting plate has guide rods at both ends; The buffer plate has its two ends respectively fitted onto the corresponding guide rods; A return spring is sleeved on the guide rod and abuts against the top surface of the buffer plate; The buffer plate is equipped with a rotary connection joint; The oil supply pipe is connected to the oil supply interface of the hoisting assembly through the rotary connector; When the oil supply pipe shakes, the oil supply pipe pulls the buffer plate and squeezes the return spring to buffer the shaking of the oil supply pipe. At the same time, the rotary connector rotates to reduce the bending of the oil supply pipe at the interface.

[0008] In one optional embodiment, the rotary connector includes: The tube body is embedded in the through hole of the buffer plate, and the upper and lower ends of the tube body extend from the top and bottom surfaces of the buffer plate, respectively. A universal connector is threaded to the top of the pipe body, and the oil supply pipe is threaded to the universal connector. The oil supply interface is threaded to the bottom of the pipe body; When the oil supply pipe shakes, the pipe body pulls the buffer plate to squeeze the return spring for cushioning. At the same time, the universal connector rotates to reduce the bending of the oil supply pipe at the interface.

[0009] In one optional implementation, the universal joint includes: A sleeve, the bottom of which is threadedly connected to the tube body; The ball joint is embedded in the cavity at the top of the sleeve; The omnidirectional ball has a through hole that communicates with the tube body; The oil supply pipe is connected to the pipe body through the through hole.

[0010] In one optional embodiment, the universal ball is provided with multiple baffles along the axial direction on the side near the oil supply pipe; One end of the baffle is connected to the universal ball, and the other end abuts against the wall of the oil supply pipe; When the oil supply pipe shakes, the oil supply pipe causes the baffle to shake, thereby causing the universal ball to rotate, so as to reduce the bending of the oil supply pipe at the interface.

[0011] In one optional embodiment, the cross-section of the baffle is U-shaped; The bottom of the baffle extends horizontally toward the omnidirectional ball, with an insert block extending outwards. The universal ball has a slot at the fitting point with the plug block; The insert block is inserted into the corresponding slot so that the multiple baffles surround and form a frustum shape.

[0012] In one alternative embodiment, the baffle is made of an elastic material; When the oil supply pipe shakes, the corresponding baffle deforms under the influence of the oil supply pipe to buffer the horizontal shaking of the oil supply pipe and reduce the bending of the oil supply pipe.

[0013] In one optional embodiment, the top of the sleeve is provided with a tapered guide surface; When the omnidirectional ball rotates to the point where it abuts against the side wall of the baffle and the guide surface, the omnidirectional ball stops rotating.

[0014] Secondly, embodiments of this disclosure also provide a forklift machine, comprising: The forklift body and the gantry structure as described above; The gantry structure is mounted on the forklift body.

[0015] Thirdly, this disclosure also provides a working method applied to the gantry structure described above, the working method comprising: The gantry frame itself drives the hoisting components to rise and fall; The winding reel follows the hoisting assembly to wind or unwind; The oil supply line is tightened using a buffer assembly; When the oil supply line is swaying; The working method also includes: the oil supply pipe pulls the buffer plate to squeeze the return spring, which buffers the shaking of the oil supply pipe. At the same time, the rotary connector rotates to reduce the bending of the oil supply pipe at the interface.

[0016] In one alternative implementation, when the oil supply line returns to a stable state: The working method also includes: The return spring pushes the buffer plate to return to its original position, thereby straightening the oil supply pipe and ensuring the stability of the oil circuit within the oil supply pipe.

[0017] The beneficial effects of this invention are that the forklift, gantry structure, and its working method, by setting up a buffer assembly consisting of a connecting plate, guide rod, buffer plate, and return spring, can effectively buffer the swaying when the oil supply pipe shakes, by pulling the buffer plate to compress the return spring and converting the kinetic energy of the swaying into the potential energy of the spring for absorption. This reduces the stress impact at the connection interface between the oil supply pipe and the lifting assembly. Simultaneously, by setting a rotating connection joint on the buffer plate, the oil supply pipe is connected to the oil supply interface through the rotating connection joint. When the oil supply pipe shakes, the rotating connection joint can rotate accordingly, reducing the rigid bending angle and bending frequency of the oil supply pipe at the interface, further reducing the risk of fatigue damage to the pipeline, ensuring smooth oil flow in the oil supply pipe, ensuring the stability of hydraulic power transmission, and making the lifting operation more stable.

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the gantry structure provided in an embodiment of the present disclosure; Figure 2 A schematic diagram of the structure of the buffer component provided in the embodiments of this disclosure; Figure 3 A cross-sectional view of a buffer assembly provided in an embodiment of this disclosure; Figure 4 An exploded view of a portion of the structure of the buffer assembly and oil supply assembly provided in the embodiments of this disclosure; Figure 5 A cross-sectional view of a portion of the structure of the buffer assembly and the oil supply assembly provided in the embodiments of this disclosure; Figure 6 A flowchart illustrating the working method of the gantry structure provided in this embodiment of the disclosure.

[0022] In the diagram: 100, gantry body; 110, reel; 200, hoisting assembly; 210, oil supply interface; 300, buffer assembly; 310, connecting plate; 320, buffer plate; 321, through hole; 330, return spring; 340, rotating connector; 341, pipe body; 342, universal connector; 3421, sleeve; 3421a, guide surface; 3422, universal ball; 3422a, through hole; 3422b, slot; 3423, baffle; 3423a, insert block; 350, guide rod; 400, oil supply pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0025] In this document, when an element or layer is referred to as “located,” “joined to,” “connected to,” “attached to,” or “coupled to” another element or layer, it may be directly located, joined, connected, attached to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as “directly on another element or layer,” “directly joined to,” “directly connected to,” “directly attached to,” or “directly coupled to” another element or layer, there may be no intermediate elements or layers present. Other terms used to describe relationships between elements should be interpreted in a similar manner (e.g., “between” versus “directly between,” “adjacent” versus “directly adjacent,” etc.). As used herein, the term “and / or” includes any and all combinations of one or more of the related listed items.

[0026] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0027] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise expressly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0028] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0029] Research has revealed that the oil supply pipe is typically fixed at one end to the top or bottom of the gantry, and the other end connects to the lifting assembly. When the lifting assembly performs lifting operations or the equipment moves, the oil supply pipe frequently retracts and swings. Especially when the equipment starts and stops or travels on uneven surfaces, the oil supply pipe is prone to severe shaking. The stress generated by this shaking concentrates at the interface between the oil supply pipe and the lifting assembly, causing repeated bending and twisting of the pipe at this point. Long-term bending stress can easily cause fatigue damage to the oil supply pipe at the interface, such as pipe wall rupture, loose joints, or even leakage. This not only affects the stability of the hydraulic system, leading to unstable lifting operations, but also causes oil contamination and safety hazards. Furthermore, excessive bending at the interface can also hinder the smooth flow of oil to some extent, affecting power transmission efficiency.

[0030] Based on the above research, this disclosure provides a forklift, a gantry structure, and its operating method. By setting a buffer assembly 300 composed of a connecting plate 310, a guide rod 350, a buffer plate 320, and a return spring 330, when the oil supply pipe 400 sways, the buffer plate 320 is pulled to compress the return spring 330, converting the kinetic energy of the sway into the potential energy of the spring and absorbing it, thereby effectively buffering the sway. This reduces the stress impact at the connection interface between the oil supply pipe 400 and the lifting assembly 200. Simultaneously, by setting a rotating connecting joint 340 on the buffer plate 320, the oil supply pipe 400 is connected to the oil supply interface 210 through the rotating connecting joint 340. When the oil supply pipe 400 shakes, the rotating connector 340 can rotate accordingly, reducing the rigid bending angle and bending frequency of the oil supply pipe 400 at the interface, further reducing the risk of fatigue damage to the pipeline, ensuring smooth flow of oil in the oil supply pipe 400, ensuring the stability of hydraulic power transmission, and making the lifting operation more stable.

[0031] The solutions designed to address the above-mentioned deficiencies are all results derived by the inventors after practical experience and careful research. Therefore, the discovery process of the above-mentioned problems and the solutions proposed in this disclosure should be considered contributions made by the inventors to this disclosure.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] Please see Figure 1 and Figure 2At least one embodiment provides a gantry structure, including: a gantry body 100; a hoisting assembly 200 slidably mounted on the gantry body 100; a winding reel 110 disposed on the top of the gantry body 100; an oil supply pipe 400, one end of which is wound around the winding reel 110; the other end of the oil supply pipe 400 is connected to the oil supply interface 210 of the hoisting assembly 200 via a buffer assembly 300; wherein, the buffer assembly 300 includes: a connecting plate 310, with guide rods 350 respectively disposed at both ends; and a buffer plate 320, with both ends respectively connected to the guide rods 350. A return spring 330 is sleeved on the guide rod 350 and abuts against the top surface of the buffer plate 320. A rotating connector 340 is provided on the buffer plate 320. The oil supply pipe 400 is connected to the oil supply interface 210 of the hoisting assembly 200 through the rotating connector 340. When the oil supply pipe 400 shakes, the oil supply pipe 400 pulls the buffer plate 320 to squeeze the return spring 330, thus buffering the shaking of the oil supply pipe 400. At the same time, the rotating connector 340 rotates to reduce the bending of the oil supply pipe 400 at the interface.

[0035] By setting up a buffer assembly 300 consisting of a connecting plate 310, a guide rod 350, a buffer plate 320, and a return spring 330, when the oil supply pipe 400 shakes, it can pull the buffer plate 320 to compress the return spring 330, converting the kinetic energy of the shaking into the potential energy of the spring and absorbing it, thereby effectively buffering the shaking. This reduces the stress impact at the connection interface between the oil supply pipe 400 and the lifting assembly 200. At the same time, by setting a rotating connection joint 340 on the buffer plate 320, the oil supply pipe 400 is connected to the oil supply interface 210 through the rotating connection joint 340. When the oil supply pipe 400 shakes, the rotating connection joint 340 can rotate accordingly, reducing the rigid bending angle and bending frequency of the oil supply pipe 400 at the interface, further reducing the risk of fatigue damage to the pipeline, ensuring smooth flow of oil in the oil supply pipe 400, ensuring the stability of hydraulic power transmission, and making the lifting operation more stable.

[0036] Please see Figure 2 and Figure 3The rotary connector 340 includes: a pipe body 341, which is embedded in the through hole 321 of the buffer plate 320, and the upper and lower ends of the pipe body 341 extend from the top and bottom surfaces of the buffer plate 320, respectively; a universal connector 342, which is threaded to the top of the pipe body 341, and the oil supply pipe 400 is threaded to the universal connector 342; and an oil supply interface 210, which is threaded to the bottom of the pipe body 341. When the oil supply pipe 400 shakes, the pipe body 341 pulls the buffer plate 320 to compress the return spring 330 for buffering. At the same time, the universal connector 342 rotates to reduce the bending of the oil supply pipe 400 at the interface.

[0037] The oil supply pipe 400 and the oil supply interface 210 are threaded to the upper and lower ends of the pipe body 341, respectively, forming a stable and sealed fluid channel. When the oil supply pipe 400 shakes, the force generated by the shaking is directly transmitted to the pipe body 341 through the universal connector 342, which in turn drives the buffer plate 320 to move, realizing the linkage between buffering and rotation. This reduces the rigid bending angle and bending frequency of the oil supply pipe 400 at the interface, further reducing the risk of fatigue damage to the pipeline, ensuring smooth flow of oil in the oil supply pipe 400, and ensuring the stability of hydraulic power transmission.

[0038] Please see Figure 4 and Figure 5 The universal connector 342 includes: a sleeve 3421, the bottom of which is threadedly connected to the pipe body 341; a universal ball 3422, which is embedded in the cavity at the top of the sleeve 3421; the universal ball 3422 has a through hole 3422a communicating with the pipe body 341; the oil supply pipe 400 communicates with the pipe body 341 through the through hole 3422a.

[0039] A universal connector 342, consisting of a sleeve 3421 and a universal ball 3422, is adopted, and a through hole 3422a is provided for the universal ball 3422, enabling flexible rotation of the oil supply pipe 400 in multiple directions. The universal ball 3422 can deflect in any direction within the cavity of the sleeve 3421, accommodating complex swaying of the oil supply pipe 400 in various directions and reducing bending stress at the interface in any direction.

[0040] Please continue reading. Figure 4 and Figure 5The universal ball 3422 has multiple baffles 3423 arranged axially on the side near the oil supply pipe 400; one end of the baffle 3423 is connected to the universal ball 3422, and the other end abuts against the pipe wall of the oil supply pipe 400; when the oil supply pipe 400 shakes, the oil supply pipe 400 drives the baffle 3423 to shake, thereby causing the universal ball 3422 to rotate, so as to reduce the bending of the oil supply pipe 400 at the interface.

[0041] By providing a baffle 3423 on the universal ball 3422 that abuts against the wall of the oil supply pipe 400, the lateral swaying of the oil supply pipe 400 is effectively converted into a thrust on the baffle 3423, thereby driving the universal ball 3422 to rotate (e.g., Figure 5 (As shown in F).

[0042] Please continue reading. Figure 4 and Figure 5 The baffle 3423 has a U-shaped cross section; the bottom of the baffle 3423 extends horizontally toward the universal ball 3422 to form an insertion block 3423a; a slot 3422b is provided at the fitting point between the universal ball 3422 and the insertion block 3423a; the insertion block 3423a is inserted into the corresponding slot 3422b so that the multiple baffles 3423 are enclosed to form a frustum shape.

[0043] At the same time, the interface of the oil supply pipe 400 is covered by the baffle 3423 to reduce the accumulation of dust at the interface.

[0044] In a preferred embodiment, the baffle 3423 is made of an elastic material; when the oil supply pipe 400 shakes, the corresponding baffle 3423 deforms under the influence of the oil supply pipe 400 to buffer the horizontal shaking of the oil supply pipe 400 and reduce the bending of the oil supply pipe 400.

[0045] By setting the baffle 3423 to an elastic material, when the oil supply pipe 400 shakes, the elastic baffle 3423 can deform to a certain extent before the rotation of the universal ball 3422, absorbing some of the horizontal impact energy, thereby providing primary buffering for high-frequency small-amplitude shaking and reducing the burden on the universal ball 3422.

[0046] Please see Figure 5 The top of the sleeve 3421 is provided with a constricted guide surface 3421a; when the universal ball 3422 rotates to the point where the side wall of the baffle 3423 abuts against the guide surface 3421a, the universal ball 3422 stops rotating.

[0047] By providing a constricted guide surface 3421a at the top of the sleeve 3421, a mechanical limit is provided for the rotation range of the universal ball 3422. When the universal ball 3422 rotates to the point where the baffle 3423 abuts against the guide surface 3421a, it can prevent excessive rotation and avoid kinking of the oil supply pipe 400 or interference with surrounding components.

[0048] At least one embodiment also includes a forklift machine, comprising: a forklift machine body and a gantry structure as described above; the gantry structure is disposed on the forklift machine body.

[0049] Please see Figure 6 At least one embodiment also provides a working method applied to the gantry structure described above. By providing a buffer assembly 300 consisting of a connecting plate 310, a guide rod 350, a buffer plate 320, and a return spring 330, when the oil supply pipe 400 sways, the buffer plate 320 is pulled to compress the return spring 330, converting the kinetic energy of the swaying into the potential energy of the spring and absorbing it, thereby effectively buffering the swaying. This reduces the stress impact at the connection interface between the oil supply pipe 400 and the hoisting assembly 200. Simultaneously, by providing a rotating connecting joint 340 on the buffer plate 320, the oil supply pipe 400 is connected to the oil supply interface 210 through the rotating connecting joint 340. When the oil supply pipe 400 shakes, the rotating connector 340 can rotate accordingly, reducing the rigid bending angle and bending frequency of the oil supply pipe 400 at the interface, further reducing the risk of fatigue damage to the pipeline, ensuring smooth flow of oil in the oil supply pipe 400, ensuring the stability of hydraulic power transmission, and making the lifting operation more stable.

[0050] Specifically, the working method includes: S110: The gantry body 100 drives the hoisting assembly 200 to rise and fall; S120: The winding reel 110 follows the hoisting assembly 200 to wind or unwind; S130: The oil supply pipe 400 is tightened by the buffer assembly 300; When the oil supply pipe 400 is shaking; The working method also includes: S140: The oil supply pipe 400 pulls the buffer plate 320 to compress the return spring 330, which buffers the shaking of the oil supply pipe 400. At the same time, the rotary connector 340 rotates to reduce the bending of the oil supply pipe 400 at the interface.

[0051] When the oil supply line 400 returns to a stable state: the working method further includes: S150: The return spring 330 pushes the buffer plate 320 to return to its original position, thereby straightening the oil supply pipe 400 and ensuring the stability of the oil circuit inside the oil supply pipe 400.

[0052] In summary, this invention provides a forklift, a gantry structure, and its operating method. By incorporating a buffer assembly 300 consisting of a connecting plate 310, a guide rod 350, a buffer plate 320, and a return spring 330, when the oil supply pipe 400 sways, the buffer plate 320 is pulled to compress the return spring 330, converting the kinetic energy of the sway into the potential energy of the spring and absorbing it, thereby effectively buffering the sway. This reduces the stress impact at the connection interface between the oil supply pipe 400 and the lifting assembly 200. Furthermore, by providing a rotating connecting joint 340 on the buffer plate 320, the oil supply pipe 400 is connected to the oil supply interface 210 via the rotating connecting joint 340. When the oil supply pipe 400 shakes, the rotating connector 340 can rotate accordingly, reducing the rigid bending angle and bending frequency of the oil supply pipe 400 at the interface, further reducing the risk of fatigue damage to the pipeline, ensuring smooth flow of oil in the oil supply pipe 400, ensuring the stability of hydraulic power transmission, and making the lifting operation more stable.

[0053] In the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0054] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as a second element, component, region, layer, or segment.

[0055] Spatially relative terms, such as “inside,” “outside,” “below,” “below,” “down,” “above,” “up,” etc., may be used herein to describe the relationship between one element or feature illustrated in the figures and another element or feature. In addition to the orientations depicted in the figures, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is flipped, an element described as “below” or “below” other elements or features would be oriented as “above” other elements or features. Thus, the example term “below” can cover both above and below orientations. The device may be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0056] In the above discussion, unless otherwise stated, when used to describe numerical values, the terms “about,” “approximately,” “basically,” etc., indicate a change of + / - 10% in that value.

[0057] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A gantry structure, characterized in that, include: Mast body (100); A hoisting assembly (200) is slidably mounted on the gantry body (100); A winding reel (110) is provided on the top of the gantry body (100). An oil supply pipe (400) has one end wound around the take-up reel (110); The other end of the oil supply pipe (400) is connected to the oil supply port (210) of the hoisting assembly (200) via a buffer assembly (300); The buffer component (300) includes: A connecting plate (310) has guide rods (350) at both ends; The buffer plate (320) is fitted onto the corresponding guide rod (350) at both ends; A return spring (330) is sleeved on the guide rod (350) and abuts against the top surface of the buffer plate (320); The buffer plate (320) is provided with a rotating connecting joint (340). The oil supply pipe (400) is connected to the oil supply port (210) of the hoisting assembly (200) through the rotary connector (340); When the oil supply pipe (400) shakes, the oil supply pipe (400) pulls the buffer plate (320) to squeeze the return spring (330) to buffer the shaking of the oil supply pipe (400). At the same time, the rotary connector (340) rotates to reduce the bending of the oil supply pipe (400) at the interface. The rotary connector (340) includes: The tube body (341) is embedded in the through hole (321) of the buffer plate (320), and the upper and lower ends of the tube body (341) extend from the top and bottom surfaces of the buffer plate (320), respectively. Universal connector (342) is threaded to the top of the pipe body (341), and the oil supply pipe (400) is threaded to the universal connector (342). The oil supply port (210) is threaded to the bottom of the pipe body (341); When the oil supply pipe (400) shakes, the pipe body (341) pulls the buffer plate (320) to squeeze the return spring (330) for buffering. At the same time, the universal connector (342) rotates to reduce the bending of the oil supply pipe (400) at the interface.

2. The gantry structure as described in claim 1, characterized in that, The universal connector (342) includes: The sleeve (3421) is threaded to the bottom of the tube body (341); The omnidirectional ball (3422) is embedded in the cavity at the top of the sleeve (3421); The omnidirectional ball (3422) has a through hole (3422a) that communicates with the tube body (341). The oil supply pipe (400) is connected to the pipe body (341) through the through hole (3422a).

3. The gantry structure as described in claim 2, characterized in that, The universal ball (3422) has multiple baffles (3423) arranged axially on the side near the oil supply pipe (400). One end of said baffle (3423) is connected to said universal ball (3422), and the other end abuts against the pipe wall of said fuel supply pipe (400); When said fuel supply pipe (400) shakes, said fuel supply pipe (400) drives said baffle (3423) to shake, so that said universal ball (3422) rotates, thereby reducing bending of said fuel supply pipe (400) at the interface.

4. The gantry structure according to claim 3, characterized in that, the cross-section of said baffle (3423) is a U-shape; the bottom of said baffle (3423) extends horizontally towards said universal ball (3422) to form an insertion block (3423a); a socket (3422b) is provided at a position where said universal ball (3422) is adapted to said insertion block (3423a); said insertion block (3423a) is inserted into corresponding said socket (3422b), so that a plurality of said baffles (3423) are enclosed to form a frustoconical shape.

5. The gantry structure according to claim 3, characterized in that, said baffle (3423) is made of elastic material; when said fuel supply pipe (400) shakes, corresponding said baffle (3423) deforms under the drive of said fuel supply pipe (400), so as to buffer horizontal shaking of said fuel supply pipe (400) and reduce bending of said fuel supply pipe (400).

6. The gantry structure according to claim 3, characterized in that, the top of said sleeve (3421) is provided with a closing-shaped guide surface (3421a); when said universal ball (3422) rotates until the side wall of said baffle (3423) abuts against said guide surface (3421a), said universal ball (3422) stops rotating.

7. A forklift, characterized in that, comprising: a stacker body and the gantry structure according to any one of claims 1-6; said gantry structure is arranged on said stacker body.

8. A method of operation applied to a gantry structure as described in any one of claims 1-6, characterized in that, said working method comprises: a gantry body (100) drives a hoisting assembly (200) to lift and lower; a reeling disc (110) follows said hoisting assembly (200) to reel or unreel; the fuel supply pipe (400) is tensioned by a buffer assembly (300); when the fuel supply pipe (400) shakes; said working method further comprises: the fuel supply pipe (400) pulls a buffer plate (320) to compress a return spring (330) to buffer shaking of the fuel supply pipe (400), and meanwhile, a rotary connecting joint (340) rotates to reduce bending of the fuel supply pipe (400) at the interface.

9. The working method of a gantry structure according to claim 8; when the fuel supply pipe (400) returns to stability: said working method further comprises: the return spring (330) pushes the buffer plate (320) to reset, so as to straighten the fuel supply pipe (400), thereby ensuring stable oil flow in the fuel supply pipe (400).

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