Forklift lifting device, forklift and detection method

Abstract

The application belongs to the technical field of lifting devices, and particularly relates to a forklift lifting device, a forklift and a detection method. The forklift lifting device comprises a fixed frame, a movable frame, a first chain assembly, a second chain assembly, a first pulley, a second pulley, a first connecting column, a second connecting column and a movable column. The first chain assembly and the second chain assembly drive the first pulley and the second pulley to rotate respectively. When the first pulley and the second pulley rotate at different speeds, the movable column exposes an indication area between the first connecting column and the second connecting column, reflecting that there is a difference in tightness between the first chain assembly and the second chain assembly. The first connecting column and the second connecting column are connected to the first pulley and the second pulley respectively, and the movable column moves relative to the first connecting column and the second connecting column, so that the difference in tightness between the first chain assembly and the second chain assembly can be accurately judged, and the first chain assembly and the second chain assembly can be timely maintained, thereby improving the safety of the forklift.

Description

Technical Field

[0001] This invention belongs to the field of lifting device technology, specifically relating to a device for lifting heavy goods, and more particularly to a forklift lifting device, a forklift, and a detection method. Background Technology

[0002] Forklifts use two chains in conjunction with corresponding cylinders to raise and lower the forks. However, after prolonged use, it is impossible to ensure that the chain tension is consistent. If the tension difference is too large, the force will be applied to only one chain when carrying goods, which will lead to damage or even breakage of that chain. Currently, the chain tension difference is avoided by regularly tightening it. However, in actual operation, chain damage still occurs during the maintenance cycle due to different load weights and working hours.

[0003] Therefore, there is an urgent need to develop a new forklift lifting device, forklift, and detection method to solve the technical problem that the difference in tension between the two chains on the forklift cannot be monitored.

[0004] 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

[0005] This disclosure provides at least one forklift lifting device, forklift, and detection method.

[0006] In a first aspect, embodiments of this disclosure provide a forklift lifting device, comprising: a controller, a fixed frame, a movable frame, a first chain assembly, a second chain assembly, a first pulley, a second pulley, a first connecting column, a second connecting column, a movable column, and an image recognition module; wherein the movable frame is movably connected to the fixed frame; the first chain assembly bypasses the first pulley, one end of which is connected to the fixed frame, and the other end of which is movably connected to the movable frame; the second chain assembly bypasses the second pulley, one end of which is connected to the fixed frame, and the other end of which is movably connected to the movable frame; the first connecting column and the second connecting column are respectively connected to the first pulley and the second pulley, and the movable frame... The movable column is movably connected to the first connecting column and the second connecting column, and the surface of the movable column is provided with an indicator area; the image recognition module is positioned facing the movable column, and the controller is configured to acquire image information of the movable column through the image recognition module; the first chain assembly and the second chain assembly drive the first pulley and the second pulley to rotate, respectively; when the first pulley and the second pulley rotate at a differential speed, the movable column moves relative to the first connecting column and the second connecting column, so as to display the exposed indicator area between the first connecting column and the second connecting column in the corresponding image information, that is, the controller determines that there is a tension difference between the first chain assembly and the second chain assembly.

[0007] In one optional embodiment, the first connecting post has a first connecting groove, and a first limiting block is disposed in the first connecting groove; the movable post extends into the first connecting groove, and a spiral groove is provided on the movable post, with the first limiting block movably engaged with the spiral groove; the second connecting post has a second connecting groove, and at least one second limiting block is disposed in the second connecting groove; the movable post extends into the second connecting groove, and a plurality of square grooves are provided on the movable post, with the second limiting block movably engaged with the square grooves; when the first connecting post and the second connecting post rotate differentially under the drive of the first pulley and the second pulley respectively, the movable post moves relative to the first limiting block and the second limiting block respectively through the spiral groove and the square groove, that is, the movable post moves relative to the first connecting post and the second connecting post to expose the indicating area between the first connecting post and the second connecting post.

[0008] In one alternative embodiment, the first chain assembly is movably connected to the movable frame via a first tension adjustment assembly; the first connecting column drives the first pulley to rotate forward or backward, so that the first tension adjustment assembly tightens or loosens the first chain assembly.

[0009] In one alternative embodiment, the first tension adjustment assembly includes a first tension screw; the first tension screw passes through the movable frame and is connected to the first chain assembly to adjust the tension of the first chain assembly.

[0010] In one alternative embodiment, the second chain assembly is movably connected to the movable frame via a second tension adjustment assembly; the second connecting column drives the second pulley to rotate forward or backward, so that the second tension adjustment assembly tightens or loosens the tension of the second chain assembly.

[0011] In one alternative embodiment, the second tension adjustment assembly includes a second tension screw; the second tension screw passes through the movable frame and is connected to the second chain assembly to adjust the tension of the second chain assembly.

[0012] In one optional embodiment, the first chain assembly includes: a first drive member and a first lifting chain; the first drive member is connected to a fixed frame, and the first lifting chain is connected to the first drive member, and the first lifting chain passes around a first pulley; the first drive member pulls the first lifting chain to move around the first pulley.

[0013] In one optional embodiment, the second chain assembly includes: a second drive member and a second lifting chain; the second drive member is connected to a fixed frame, and the second lifting chain is connected to the second drive member, and the second lifting chain passes around a second pulley; the second drive member pulls the second lifting chain to move around the second pulley.

[0014] Secondly, embodiments of this disclosure also provide a forklift, which includes: a mobile body, forks, and a forklift lifting device as described above; wherein the forklift lifting device is mounted on the mobile body, and the forks are connected to the forklift lifting device.

[0015] Thirdly, this disclosure also provides a detection method applicable to the above-mentioned forklift lifting device, which includes: when the first pulley and the second pulley rotate at a differential speed, the movable column moves relative to the first connecting column and the second connecting column to display an exposed indicator area between the first connecting column and the second connecting column in the corresponding image information, that is, the controller determines that there is a tension difference between the first chain assembly and the second chain assembly.

[0016] The beneficial effects of this invention are that, by connecting the first pulley and the second pulley respectively through the first connecting column and the second connecting column, and by the relative movement of the movable column with the first connecting column and the second connecting column, an indicator area is exposed between the first connecting column and the second connecting column, thereby enabling the determination that the movable column has moved relative to the first connecting column and the second connecting column. This allows for accurate determination of the tension difference between the first chain assembly and the second chain assembly, enabling timely maintenance of the first chain assembly and the second chain assembly, and improving the safety of forklift use.

[0017] 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.

[0018] 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

[0019] 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.

[0020] Figure 1 This is a structural diagram of a forklift lifting device provided in an embodiment of the present disclosure;

[0021] Figure 2 A structural diagram of a first chain assembly and a second chain assembly provided in an embodiment of this disclosure;

[0022] Figure 3 A structural diagram of a first connecting column, a second connecting column, and a movable column provided in an embodiment of this disclosure;

[0023] Figure 4 A cross-sectional view of a first connecting column, a second connecting column, and a movable column provided in an embodiment of this disclosure;

[0024] Figure 5 This is a structural diagram of a first tension adjustment component and a second tension adjustment component provided in an embodiment of this disclosure.

[0025] In the picture:

[0026] 1. Fixture;

[0027] 2. Movable rack;

[0028] 3. First chain assembly; 31. First drive component; 32. First lifting chain;

[0029] 4. Second chain assembly; 41. Second drive unit; 42. Second lifting chain;

[0030] 5. First pulley;

[0031] 6. Second pulley;

[0032] 7. First connecting post; 71. First connecting groove; 72. First limiting block;

[0033] 8. Second connecting post; 81. Second connecting groove; 82. Second limiting block;

[0034] 9. Movable column; 91. Indicator area; 92. Spiral groove; 93. Square groove;

[0035] 1A, First tension adjustment assembly; 1A1, First tension screw;

[0036] 1B, Second tension adjustment assembly; 1B1, Second tension screw;

[0037] 1C, Image Recognition Module. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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 clearly 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.

[0043] 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.

[0044] Research has shown that forklifts use two chains in conjunction with corresponding cylinders to raise and lower the forks. However, after prolonged use, it is impossible to ensure that the chain tension is consistent. If the tension difference is too large, the force will be applied to only one chain when carrying goods, leading to damage or even breakage of that chain. Currently, the chain tension difference is prevented by periodically tightening it. However, in actual operation, chain damage still occurs during maintenance cycles due to differences in the weight of the goods being carried and the duration of operation.

[0045] Based on the above research, this disclosure provides a forklift lifting device, a forklift, and a detection method, which can accurately determine the tension difference between the first chain assembly and the second chain assembly, enabling timely maintenance of the first and second chain assemblies and improving the safety of forklift operation.

[0046] 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.

[0047] 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.

[0048] 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.

[0049] like Figures 1 to 5As shown, at least one embodiment provides a forklift lifting device, comprising: a controller, a fixed frame 1, a movable frame 2, a first chain assembly 3, a second chain assembly 4, a first pulley 5, a second pulley 6, a first connecting column 7, a second connecting column 8, a movable column 9, and an image recognition module 1C; wherein the movable frame 2 is movably connected to the fixed frame 1, and the first pulley 5 and the second pulley 6 are respectively movably connected to the movable frame 2; the first chain assembly 3 passes around the first pulley 5, with one end connected to the fixed frame 1 and the other end movably connected to the movable frame 2; the second chain assembly 4 passes around the second pulley 6, with one end connected to the fixed frame 1 and the other end movably connected to the movable frame 2; the first connecting column 7 and the second connecting column 8 are respectively connected to the first pulley 5 and the second pulley 6, and a portion of the movable column 9 is movably embedded in the first... Within the connecting post 7, another part of the movable post 9 is movably embedded within the second connecting post 8. The remaining part of the movable post 9 is located between the first connecting post 7 and the second connecting post 8, and an indicator area 91 is provided on the surface of the movable post 9. The image recognition module 1C is positioned facing the movable post 9, and the controller is configured to acquire image information of the movable post 9 through the image recognition module 1C. The first chain assembly 3 and the second chain assembly 4 respectively drive the first pulley 5 and the second pulley 6 to rotate. When the first pulley 5 and the second pulley 6 rotate at a differential speed, the movable post 9 moves relative to the first connecting post 7 and the second connecting post 8 to display the exposed indicator area 91 between the first connecting post 7 and the second connecting post 8 in the corresponding image information, that is, the controller determines that there is a tension difference between the first chain assembly 3 and the second chain assembly 4.

[0050] Specifically, the controller can be, but is not limited to, an STM32 series microcontroller.

[0051] Specifically, the image recognition module 1C may be, but is not limited to, a camera, and the controller works with the image recognition module 1C to extract whether the indication area 91 is exposed between the first connecting post 7 and the second connecting post 8 from the image information.

[0052] Specifically, please refer to Figure 3When the first chain assembly 3 is tightened, it will drive the first pulley 5 to rotate. When the second chain assembly 4 is tightened, it will drive the second pulley 6 to rotate. If there is a difference in tension between the first chain assembly 3 and the second chain assembly 4, the tighter one will drive the corresponding pulley to rotate first, and the looser one will drive the corresponding pulley to rotate later. At the same time, the first connecting post 7 and the second connecting post 8 rotate with the first pulley 5 and the second pulley 6, respectively. As a result, when there is a difference in rotational speed between the first connecting post 7 and the second connecting post 8, the movable post 9 will move between the first connecting post 7 and the second connecting post 8. The distance the movable post 9 moves can reflect the difference in tension between the first chain assembly 3 and the second chain assembly 4. That is, the indicator area 91 on the movable post 9 can reflect the difference in tension between the first chain assembly 3 and the second chain assembly 4.

[0053] In at least one embodiment, the first pulley 5 and the second pulley 6 are connected by the first connecting column 7 and the second connecting column 8, respectively. The movable column 9 moves relative to the first connecting column 7 and the second connecting column 8, and the movable column 9 exposes the indicator area 91 between the first connecting column 7 and the second connecting column 8. This allows the movable column to move relative to the first connecting column 7 and the second connecting column 8, accurately determine the tension difference between the first chain assembly 3 and the second chain assembly 4, and promptly inspect the first chain assembly 3 and the second chain assembly 4, thereby improving the safety of forklift use.

[0054] In at least one embodiment, please refer to Figure 4 The first connecting post 7 has a first connecting groove 71, and a first limiting block 72 is provided in the first connecting groove 71; the movable post 9 extends into the first connecting groove 71, and a spiral groove 92 is provided on the movable post 9, and the first limiting block 72 is movably engaged with the spiral groove 92; the second connecting post 8 has a second connecting groove 81, and at least one second limiting block 82 is provided in the second connecting groove 81; the movable post 9 extends into the second connecting groove 81, and a plurality of square grooves 93 are provided on the movable post 9, and the second limiting block 82 is movably engaged with the square grooves 93; when the first connecting post 7 and the second connecting post 8 rotate differentially under the drive of the first pulley 5 and the second pulley 6 respectively, the movable post 9 moves relative to the first limiting block 72 and the second limiting block 82 through the spiral groove 92 and the square groove 93 respectively, that is, the movable post 9 moves relative to the first connecting post 7 and the second connecting post 8, so as to expose the indicating area 91 between the first connecting post 7 and the second connecting post 8.

[0055] Specifically, please refer to Figure 4The first pulley 5 and the second pulley 6 will rotate along the F1 direction or the F2 direction, thereby driving the first connecting column 7 and the second connecting column 8 to rotate along the F1 direction or the F2 direction. When there is a difference in rotation speed between the first connecting column 7 and the second connecting column 8, the movable column 9 will move along the F3 direction, that is, move towards the first pulley 5 or towards the second pulley 6.

[0056] Specifically, please refer to Figure 4 The first connecting column 7 and the second connecting column 8 only rotate. When there is a difference in rotational speed between the first connecting column 7 and the second connecting column 8, the movable column 9 can move relative to the first connecting column 7 and the second connecting column 8 due to the limiting relationship between the spiral groove 92 and the first limiting block 72, and the square groove 93 and the second limiting block 82.

[0057] Specifically, if the tension of the first chain assembly 3 and the second chain assembly 4 is the same, the first pulley 5 and the second pulley 6 will rotate synchronously at the same speed, and then the first connecting post 7 and the second connecting post 8 will rotate synchronously at the same speed. The movable post 9 will only rotate with the first connecting post 7 and the second connecting post 8, and the movable post 9 will not move relative to the first connecting post 7 and the second connecting post 8.

[0058] In at least one embodiment, please refer to Figure 5 The first chain assembly 3 is movably connected to the movable frame 2 via the first tension adjustment assembly 1A; the first connecting column 7 drives the first pulley 5 to rotate forward or backward, so that the first tension adjustment assembly 1A tightens or loosens the first chain assembly 3.

[0059] Specifically, when the tension of the first chain assembly 3 is too low, the first connecting post 7 is turned in the opposite direction (e.g., Figure 5 (in the F4 direction), and then with the first pulley 5 as the dividing point, the first lifting chain 32 on the right side of the first pulley 5 is subjected to an upward force (such as... Figure 5 In the direction of F6), the first lifting chain 32 on the left side of the first pulley 5 is subjected to a downward force (such as...). Figure 5 (In the F7 direction), at this time, turning the first tension adjustment component 1A to tighten the first lifting chain 32 can save effort.

[0060] Specifically, when the tension of the first chain assembly 3 is too high, the first connecting post 7 is turned in the forward direction (e.g., Figure 5 (in the direction of F5), and then with the first pulley 5 as the dividing point, the first lifting chain 32 on the right side of the first pulley 5 is subjected to a downward force (such as... Figure 5 In the direction of F7), the first lifting chain 32 on the left side of the first pulley 5 is subjected to an upward force (such as...). Figure 5 (In the F6 direction), at this time, turning the first tension adjustment component 1A to loosen the first lifting chain 32 can save effort.

[0061] In at least one embodiment, please refer to Figure 5 The first tension adjustment component 1A includes: a first tension screw 1A1; the first tension screw 1A1 passes through the movable frame 2 and is connected to the first chain assembly 3 to adjust the tension of the first chain assembly 3.

[0062] In at least one embodiment, please refer to Figure 5 The second chain assembly 4 is movably connected to the movable frame 2 via the second tension adjustment assembly 1B; the second connecting column 8 drives the second pulley 6 to rotate forward or backward, so that the second tension adjustment assembly 1B tightens or loosens the tension of the second chain assembly 4.

[0063] Specifically, when the tension of the second chain assembly 4 is too low, the second connecting post 8 is turned in the opposite direction (e.g., Figure 5 (in the F4 direction), and then with the second pulley 6 as the dividing point, the second lifting chain 42 on the right side of the second pulley 6 is subjected to an upward force (such as... Figure 5 In the direction of F6), the second lifting chain 42 on the left side of the second pulley 6 is subjected to a downward force (such as...). Figure 5 (In the F7 direction), at this time, turning the second tension adjustment component 1B to tighten the second lifting chain 42 can save effort.

[0064] Specifically, when the tension of the second chain assembly 4 is too high, the second connecting post 8 is turned in the forward direction (e.g., Figure 5 (in the F5 direction), and then with the second pulley 6 as the dividing point, the second lifting chain 42 on the right side of the second pulley 6 is subjected to a downward force (such as... Figure 5 In the direction of F7), the second lifting chain 42 on the left side of the second pulley 6 is subjected to an upward force (such as...). Figure 5 (In the F6 direction), at this time, turning the second tension adjustment component 1B to loosen the second lifting chain 42 can save effort.

[0065] In at least one embodiment, please refer to Figure 5 The second tension adjustment component 1B includes a second tension screw 1B1; the second tension screw 1B1 passes through the movable frame 2 and is connected to the second chain assembly 4 to adjust the tension of the second chain assembly 4.

[0066] In at least one embodiment, please refer to Figure 2 The first chain assembly 3 includes: a first drive member 31 and a first lifting chain 32; the first drive member 31 is connected to the fixed frame 1, and the first lifting chain 32 is connected to the first drive member 31, and the first lifting chain 32 passes around the first pulley 5; the first drive member 31 pulls the first lifting chain 32 to move around the first pulley 5.

[0067] Specifically, the first driving component 31 may be, but is not limited to, a driving cylinder.

[0068] In at least one embodiment, please refer to Figure 2 The second chain assembly 4 includes: a second drive member 41 and a second lifting chain 42; the second drive member 41 is connected to the fixed frame 1, and the second lifting chain 42 is connected to the second drive member 41, and the second lifting chain 42 passes around the second pulley 6; the second drive member 41 pulls the second lifting chain 42 to move around the second pulley 6.

[0069] Specifically, the second drive element 41 may be, but is not limited to, a drive cylinder.

[0070] Based on the same technical concept, at least one embodiment also provides a forklift, which includes: a mobile body, forks, and a forklift lifting device as described above; wherein the forklift lifting device is mounted on the mobile body, and the forks are connected to the forklift lifting device.

[0071] Based on the same technical concept, at least one embodiment also provides a detection method applicable to the above-mentioned forklift lifting device, which includes: when the first pulley 5 and the second pulley 6 rotate at different speeds, the movable column 9 moves relative to the first connecting column 7 and the second connecting column 8 to display a corresponding indicator area 91 between the first connecting column 7 and the second connecting column 8, that is, to reflect the difference in tightness between the first chain assembly 3 and the second chain assembly 4.

[0072] In summary, this invention connects the first pulley and the second pulley to the first and second connecting columns, respectively. By moving the movable column relative to the first and second connecting columns, an indicator area is exposed between the movable column and the first and second connecting columns. This allows for the determination of movement of the movable column relative to the first and second connecting columns, accurately identifying any tension difference between the first and second chain assemblies, and enabling timely maintenance of the first and second chain assemblies, thus improving the safety of forklift operation.

[0073] 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.

[0074] 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, are based on the orientation or positional relationships shown in the accompanying drawings and 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.

[0075] 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.

[0076] 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.

[0077] 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 forklift lifting device, characterized in that, include: The system comprises a controller, a fixed frame (1), a movable frame (2), a first chain assembly (3), a second chain assembly (4), a first pulley (5), a second pulley (6), a first connecting post (7), a second connecting post (8), a movable post (9), and an image recognition module (1C); among which... The movable frame (2) is in a limited movable connection with the fixed frame (1); The first chain assembly (3) passes around the first pulley (5), one end of which is connected to the fixed frame (1), and the other end of which is movably connected to the movable frame (2); The second chain assembly (4) passes around the second pulley (6), with one end connected to the fixed frame (1) and the other end movably connected to the movable frame (2); The first connecting post (7) and the second connecting post (8) are respectively connected to the first pulley (5) and the second pulley (6), and the movable post (9) is movably connected to the first connecting post (7) and the second connecting post (8), and the surface of the movable post (9) is provided with an indicator area (91). The image recognition module (1C) is positioned toward the active column (9), and the controller is configured to acquire image information of the active column (9) through the image recognition module (1C); When the first pulley (5) and the second pulley (6) rotate at different speeds, the movable column (9) moves relative to the first connecting column (7) and the second connecting column (8) to display an exposed indicator area (91) between the first connecting column (7) and the second connecting column (8) in the corresponding image information, that is, the controller determines that there is a difference in tightness between the first chain assembly (3) and the second chain assembly (4).

2. The forklift lifting device as described in claim 1, characterized in that, The first connecting post (7) is provided with a first connecting groove (71), and a first limiting block (72) is provided in the first connecting groove (71); The movable column (9) extends into the first connecting groove (71), and a spiral groove (92) is provided on the movable column (9), and the first limiting block (72) is movably engaged with the spiral groove (92); The second connecting post (8) is provided with a second connecting groove (81), and at least one second limiting block (82) is provided in the second connecting groove (81); The movable column (9) extends into the second connecting groove (81), and the movable column (9) is provided with a plurality of square grooves (93), and the second limiting block (82) is movably engaged with the square grooves (93); When the first connecting post (7) and the second connecting post (8) rotate at a differential speed driven by the first pulley (5) and the second pulley (6) respectively, the movable post (9) moves relative to the first limiting block (72) and the second limiting block (82) through the spiral groove (92) and the square groove (93) respectively. That is, the movable post (9) moves relative to the first connecting post (7) and the second connecting post (8) to expose the indicator area (91) between the first connecting post (7) and the second connecting post (8).

3. The forklift lifting device as described in claim 1, characterized in that, The first chain assembly (3) is movably connected to the movable frame (2) via the first tension adjustment assembly (1A); The first connecting column (7) drives the first pulley (5) to rotate in the forward or reverse direction so that the first tension adjustment component (1A) tightens or loosens the first chain component (3).

4. The forklift lifting device as described in claim 3, characterized in that, The first tension adjustment assembly (1A) includes: a first tension screw (1A1); The first tightening screw (1A1) passes through the movable frame (2) and connects to the first chain assembly (3) to adjust the tightness of the first chain assembly (3).

5. The forklift lifting device as described in claim 1, characterized in that, The second chain assembly (4) is movably connected to the movable frame (2) via the second tension adjustment assembly (1B); The second connecting column (8) drives the second pulley (6) to rotate in the forward or reverse direction so that the second tension adjustment component (1B) tightens or loosens the tension of the second chain component (4).

6. The forklift lifting device as described in claim 5, characterized in that, The second tension adjustment assembly (1B) includes: a second tension screw (1B1); The second tightening screw (1B1) passes through the movable frame (2) and connects to the second chain assembly (4) to adjust the tightness of the second chain assembly (4).

7. The forklift lifting device as described in claim 1, characterized in that, The first chain assembly (3) includes: a first drive member (31) and a first lifting chain (32); The first driving member (31) is connected to the fixed frame (1), and the first lifting chain (32) is connected to the first driving member (31), and the first lifting chain (32) passes around the first pulley (5). The first driving component (31) pulls the first lifting chain (32) to move around the first pulley (5).

8. The forklift lifting device as described in claim 1, characterized in that, The second chain assembly (4) includes: a second drive member (41) and a second lifting chain (42); The second drive member (41) is connected to the fixed frame (1), and the second lifting chain (42) is connected to the second drive member (41), and the second lifting chain (42) passes around the second pulley (6). The second drive member (41) pulls the second lifting chain (42) to move around the second pulley (6).

9. A forklift, characterized in that, include: The mobile body, the forks, and the forklift lifting device as described in any one of claims 1-8; in The forklift lifting device is mounted on the moving body, and the forks are connected to the forklift lifting device.

10. A detection method applicable to the forklift lifting device as described in any one of claims 1-8, characterized in that, include: When the first pulley (5) and the second pulley (6) rotate at different speeds, the movable column (9) moves relative to the first connecting column (7) and the second connecting column (8) to display the exposed indicator area (91) between the first connecting column (7) and the second connecting column (8) in the corresponding image information, that is, the controller judges that there is a difference in tightness between the first chain assembly (3) and the second chain assembly (4).

Images