Hoisting mechanism for forklift, forklift and working method of forklift
By setting a sliding groove on the sliding rod and a V-shaped abutment plate to cooperate with the slider, the wear problem of linear bearings in container lifting devices is solved. Rolling friction between the slider and the sliding groove is realized, the concentrated force on the linear bearing is distributed, the service life is extended and the maintenance frequency is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-12
- Publication Date
- 2026-03-31
AI Technical Summary
In existing container lifting equipment, the sliding friction between the linear bearing and the sliding rod generates a large amount of heat, leading to abnormal wear of the bearing raceway. Furthermore, the lack of an effective lateral support structure makes the inner and outer rings of the bearing prone to eccentric deformation, thus shortening its service life.
By setting a groove on the sliding rod and setting a V-shaped abutment plate in the slider and the groove, the slider and the groove cooperate to slide, converting the horizontal motion load of the fork into rolling friction or low friction sliding between the slider and the groove, increasing the frictional difference between the slider and the groove, dispersing the concentrated force of the linear bearing, and isolating the force area of the fork by the partition plate, thereby enhancing the overall torsional strength.
It effectively reduces abnormal wear of linear bearings, extends service life, reduces maintenance frequency, and improves the stability and durability of the lifting mechanism.
Smart Images
Figure CN121757765A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of container lifting technology, specifically relating to a device for lifting containers, and more particularly to a forklift lifting mechanism, a forklift, and its working method. Background Technology
[0002] In related technologies, forks move horizontally along sliding rods via linear bearings to achieve loading and unloading of goods.
[0003] However, such devices have the following technical defects in practical applications: due to the frequent inertial impact of heavy loads and frequent start-stop operations, the sliding friction between the linear bearing and the sliding rod generates a lot of heat, leading to abnormal wear of the bearing raceway; at the same time, in the existing structure, the surface of the sliding rod and the bearing slider are mostly in planar contact, which can easily lead to adhesive wear or even seizure when lubrication conditions are limited; in addition, when encountering sudden impact loads, the linear bearing lacks an effective lateral support structure, and the inner and outer rings of the bearing are prone to eccentric deformation, further shortening its service life.
[0004] Therefore, how to reduce the wear of linear bearings 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 lifting mechanism for a forklift, a forklift, and a method for operating the forklift.
[0007] In a first aspect, embodiments of this disclosure provide a lifting mechanism for a forklift, comprising:
[0008] mast;
[0009] A lifting frame is mounted on the mast;
[0010] The lifting frame is equipped with a sliding rod;
[0011] The sliding rod is equipped with forks;
[0012] The forks are slidably mounted on the sliding rod via linear bearings and are driven by a hydraulic cylinder.
[0013] The sliding rod is provided with a groove in the horizontal direction;
[0014] The linear bearing bushing is provided with a slider along the axial direction;
[0015] The slider is slidably disposed within the groove to provide auxiliary support for the linear bearing.
[0016] In one optional embodiment, a support block is slidably disposed within the groove;
[0017] The abutment block is provided with a V-shaped abutment plate;
[0018] The slider abuts against the inner walls on both sides of the V-shaped abutment plate.
[0019] In one optional embodiment, when the slider abuts against the inner walls on both sides of the V-shaped abutment plate, the bottom surface of the slider abuts against the bottom surface of the groove to provide auxiliary support for the linear bearing.
[0020] In one optional embodiment, a gap is provided between the top surface of the slider and the top surface of the groove;
[0021] When the drive cylinder drives the slider to slide, the slider slides along the V-shaped support plate so that the bottom surface of the slider separates from the bottom surface of the groove.
[0022] In one optional embodiment, the frictional force between the abutment block and the groove is F1;
[0023] The frictional force is F2 when the slider slides and rises along the V-shaped support plate;
[0024] Among them, F1 is greater than F2.
[0025] In one optional implementation, the number of forks is two;
[0026] Both forks are mounted on the sliding rod.
[0027] In one optional embodiment, the forklift lifting mechanism further includes:
[0028] Divider;
[0029] The partition plate is fixedly installed on the lifting frame and located between the two forks.
[0030] In one optional embodiment, a support plate is provided at the bottom of the lifting frame;
[0031] One end of the partition plate is fixedly connected to the sliding rod, and the other end of the partition plate is fixedly connected to the support plate;
[0032] The back of the forks abuts against the support plate.
[0033] Secondly, embodiments of this disclosure also provide a forklift, including: a forklift body and a lifting mechanism for the forklift as described above.
[0034] Thirdly, this disclosure also provides a method for operating a forklift.
[0035] The forklift includes the lifting mechanism for forklifts as described above;
[0036] The working method includes:
[0037] The position of the forks on the lifting frame is adjusted by driving the hydraulic cylinder;
[0038] As the forks slide along the sliding rod, the linear bearing is provided with auxiliary support by the slider.
[0039] The beneficial effects of this invention are that the lifting mechanism, forklift, and working method of this forklift convert the horizontal motion load of the forks into rolling friction or low-friction sliding between the slider and the slide groove through the sliding cooperation of the slider and the slide groove. This disperses the concentrated force on the linear bearing, effectively reduces abnormal wear of the bearing raceway, extends service life, and reduces the maintenance frequency of the forks.
[0040] 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.
[0041] 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
[0042] 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.
[0043] Figure 1 This is a schematic diagram of the structure of the forklift lifting mechanism provided in the embodiments of this disclosure;
[0044] Figure 2 A cross-sectional view of a forklift lifting mechanism provided in an embodiment of this disclosure;
[0045] Figure 3 A partial structural diagram of the linear bearing and sliding rod assembly provided in an embodiment of this disclosure;
[0046] Figure 4 This is a schematic diagram from another perspective of the partial structure of the linear bearing and sliding rod cooperation provided in the embodiments of this disclosure;
[0047] Figure 5A flowchart illustrating the working method of a forklift provided in an embodiment of this disclosure.
[0048] In the diagram: 100, mast; 200, lifting frame; 210, support plate; 300, sliding rod; 310, slide rail; 320, abutment block; 321, V-shaped abutment plate; 400, fork; 410, linear bearing; 420, slider; 500, drive cylinder; 600, partition plate. Detailed Implementation
[0049] 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.
[0050] 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.
[0051] 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.
[0052] 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.
[0053] 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.
[0054] 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.
[0055] Research has revealed that due to the frequent inertial impacts of heavy loads and frequent start-stop operations, the sliding friction between the linear bearing and the sliding rod generates a large amount of heat, leading to abnormal wear of the bearing raceway. Furthermore, in existing structures, the surface of the sliding rod and the bearing slider are mostly in planar contact, which, when lubrication is limited, easily results in adhesive wear or even seizing. In addition, when encountering sudden impact loads, the linear bearing lacks an effective lateral support structure, making the inner and outer rings prone to eccentric deformation, further shortening its service life.
[0056] Based on the above research, the present disclosure provides a lifting mechanism for a forklift, a forklift and its working method. By sliding the slider and the slide groove, the horizontal motion load of the fork is converted into rolling friction or low-friction sliding between the slider and the slide groove, which disperses the concentrated force of the linear bearing, effectively reduces abnormal wear of the bearing raceway, extends service life and reduces the maintenance frequency of the fork.
[0057] The shortcomings of the above solutions are the result of the inventor's practical experience and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventor's contribution to this disclosure.
[0058] 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.
[0059] 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.
[0060] Please see Figure 1 and Figure 2 At least one embodiment provides a lifting mechanism for a forklift, comprising: a mast 100; a lifting frame 200 disposed on the mast 100; a sliding rod 300 disposed on the lifting frame 200; forks 400 disposed on the sliding rod 300; the forks 400 being slidably disposed on the sliding rod 300 via linear bearings 410 and driven by a drive cylinder 500; the sliding rod 300 being provided with a groove 310 in the horizontal direction; a slider 420 being provided axially on the bushing of the linear bearing 410; the slider 420 being slidably disposed within the groove 310 to provide auxiliary support for the linear bearing 410.
[0061] By sliding the slider 420 and the groove 310, the horizontal motion load of the fork 400 is converted into rolling friction or low-friction sliding between the slider 420 and the groove 310, which disperses the concentrated force on the linear bearing 410, effectively reduces abnormal wear of the bearing raceway, extends service life, and reduces the maintenance frequency of the fork 400.
[0062] Please see Figure 3 and Figure 4 A retaining block 320 is slidably disposed within the groove 310; a V-shaped retaining plate 321 is disposed on the retaining block 320; the slider 420 abuts against the inner walls on both sides of the V-shaped retaining plate 321. Through the wedge-shaped engagement between the V-shaped retaining plate and the slider 420, the slider 420 can be automatically lifted when the fork 400 moves, causing the bottom surface of the slider 420 to detach from the bottom surface of the groove 310, reducing the friction force on the slider 420, thereby facilitating the sliding of the fork 400.
[0063] Please continue reading. Figure 3 and Figure 4 When the slider 420 abuts against the inner walls on both sides of the V-shaped abutment plate 321, the bottom surface of the slider 420 abuts against the bottom surface of the slide groove 310 to provide auxiliary support for the linear bearing 410. The normal contact between the bottom surface of the slider 420 and the bottom surface of the slide groove 310 forms a rigid support, dispersing the concentrated load during the horizontal movement of the fork 400. At the same time, the abutment between the slider 420 and the slide groove 310 reduces the stress on the balls of the linear bearing 410, thereby reducing the wear of the linear bearing 410.
[0064] Please continue reading. Figure 3 and Figure 4 A gap is provided between the top surface of the slider 420 and the top surface of the slide groove 310. When the driving cylinder 500 drives the slider 420 to slide, the slider 420 slides along the V-shaped abutment plate 321, so that the bottom surface of the slider 420 separates from the bottom surface of the slide groove 310. When the driving cylinder 500 is activated, the slider 420 slides and rises along the V-shaped abutment plate, reducing motion damping and frictional heat generation.
[0065] It should be noted that the frictional force between the supporting block 320 and the sliding groove 310 is F1; the frictional force when the slider 420 slides and rises along the V-shaped supporting plate 321 is F2; wherein, F1 is greater than F2. By increasing the frictional force between the supporting block 320 and the sliding groove 310, it is ensured that the slider 420 can rise along the V-shaped supporting plate when sliding, thereby reducing the friction between the slider 420 and the sliding groove.
[0066] Please see Figure 1 and Figure 2 The forklift mechanism includes two forks 400, both mounted on the sliding rod 300. The forklift lifting mechanism also includes a partition plate 600, which is fixedly mounted on the lifting frame 200 and positioned between the two forks 400. The partition plate 600 physically isolates the load-bearing areas of the two forks 400, preventing interference between them when the load is unevenly distributed. Its rigid connection structure enhances the overall torsional strength of the lifting frame 200, reducing the deformation of the lifting mechanism under complex working conditions. Simultaneously, the partition plate 600 limits the movement of the forks 400, thereby reducing interference between the two forks 400.
[0067] Please continue reading. Figure 1 and Figure 2 The bottom of the lifting frame 200 is provided with a support plate 210; one end of the partition plate 600 is fixedly connected to the sliding rod 300, and the other end of the partition plate 600 is fixedly connected to the support plate 210; the back of the fork 400 abuts against the support plate 210. This converts the shear force on the back of the fork 400 into surface contact bearing capacity, effectively suppressing the elastic flexural deformation of the fork 400 under heavy load conditions and ensuring the parallelism between the fork 400 and the container contact surface.
[0068] At least one embodiment also provides a forklift, including: a forklift body and a lifting mechanism for the forklift as described above. Through the sliding engagement of the slider 420 and the slide groove 310, a portion of the horizontal motion load of the forks 400 is converted into rolling friction or low-friction sliding between the slider 420 and the slide groove 310, dispersing the concentrated force on the linear bearing 410, effectively reducing abnormal wear of the bearing raceway, extending service life, and reducing the maintenance frequency of the forks 400.
[0069] Please see Figure 5 This disclosure also provides a method for operating a forklift, wherein the forklift includes a lifting mechanism as described above. By sliding the slider 420 and the slide groove 310, the horizontal motion load of the forks 400 is converted into rolling friction or low-friction sliding between the slider 420 and the slide groove 310, which disperses the concentrated force on the linear bearing 410, effectively reduces abnormal wear of the bearing raceway, extends service life, and reduces the maintenance frequency of the forks 400.
[0070] Specifically, the working method includes:
[0071] S110: Adjust the position of the forks 400 on the lifting frame 200 by driving the hydraulic cylinder 500;
[0072] S120: When the fork 400 slides along the sliding rod 300, the linear bearing 410 is provided with auxiliary support by the slider 420.
[0073] The beneficial effects of this invention are that it provides a lifting mechanism for a forklift, a forklift, and a method for operating the same. The lifting mechanism includes: a mast 100; a lifting frame 200 mounted on the mast 100; a sliding rod 300 mounted on the lifting frame 200; forks 400 mounted on the sliding rod 300; the forks 400 slidably mounted on the sliding rod 300 via linear bearings 410 and driven by a hydraulic cylinder 500; a horizontal groove 310 provided on the sliding rod 300; and a slider 420 axially mounted on the bushing of the linear bearing 410; the slider 420 slidably mounted within the groove 310 to provide auxiliary support for the linear bearing 410. By sliding the slider 420 and the groove 310, the horizontal motion load of the fork 400 is converted into rolling friction or low-friction sliding between the slider 420 and the groove 310, which disperses the concentrated force on the linear bearing 410, effectively reduces abnormal wear of the bearing raceway, extends service life, and reduces the maintenance frequency of the fork 400.
[0074] 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.
[0075] 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.
[0076] 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.
[0077] 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.
[0078] 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 lifting mechanism for a forklift, characterized in that, include: Mast (100); A lifting frame (200) is mounted on the mast (100); A sliding rod (300) is provided on the lifting frame (200); The sliding rod (300) is provided with forks (400); The forks (400) are slidably mounted on the sliding rod (300) via linear bearings (410) and are driven by a drive cylinder (500); The sliding rod (300) is provided with a sliding groove (310) in the horizontal direction; The sleeve of the linear bearing (410) is provided with a slider (420) along the axial direction. The slider (420) is slidably disposed in the groove (310) to provide auxiliary support for the linear bearing (410).
2. The forklift lifting mechanism as described in claim 1, characterized in that, A support block (320) is slidably disposed in the groove (310); The abutment block (320) is provided with a V-shaped abutment plate (321); The slider (420) abuts against the inner walls on both sides of the V-shaped abutment plate (321).
3. The forklift lifting mechanism as described in claim 2, characterized in that, When the slider (420) abuts against the inner walls on both sides of the V-shaped abutment plate (321), the bottom surface of the slider (420) abuts against the bottom surface of the groove (310) to provide auxiliary support for the linear bearing (410).
4. The forklift lifting mechanism as described in claim 3, characterized in that, The top surface of the slider (420) and the top surface of the groove (310) are provided with a gap; When the driving cylinder (500) drives the slider (420) to slide, the slider (420) slides along the V-shaped support plate (321) so that the bottom surface of the slider (420) separates from the bottom surface of the groove (310).
5. The forklift lifting mechanism as described in claim 4, characterized in that, The frictional force between the abutment block (320) and the slide groove (310) is F1; The frictional force is F2 when the slider (420) slides and rises along the V-shaped support plate (321); Among them, F1 is greater than F2.
6. The forklift lifting mechanism as described in claim 1, characterized in that, The number of forks (400) is two; Both of the forks (400) are mounted on the sliding rod (300).
7. The forklift lifting mechanism as described in claim 6, characterized in that, The forklift lifting mechanism also includes: Divider (600); The partition plate (600) is fixedly installed on the lifting frame (200) and located between the two forks (400).
8. The forklift lifting mechanism as described in claim 7, characterized in that, The bottom of the lifting frame (200) is provided with a support plate (210). One end of the partition plate (600) is fixedly connected to the sliding rod (300), and the other end of the partition plate (600) is fixedly connected to the support plate (210); The back of the forks (400) abuts against the support plate (210).
9. A forklift, characterized in that, include: The forklift body and the forklift lifting mechanism as described in any one of claims 1-8.
10. A method for operating a forklift, characterized in that, The forklift includes a lifting mechanism for a forklift as described in any one of claims 1-8; The working method includes: The position of the forks (400) on the lifting frame (200) is adjusted by driving the hydraulic cylinder (500); As the forks (400) slide along the sliding rod (300), the linear bearing (410) is provided with auxiliary support by the slider (420).