Scissor fork frame lifting device

Abstract

The utility model discloses a scissor fork frame lifting device. The scissor fork frame lifting device comprises a supporting table and a lifting module, the lifting module is used for driving the supporting table to ascend and descend, the lifting module comprises a first assembly, a second assembly, a first swing arm, a second swing arm and a driving part, the first swing arm and the second swing arm are arranged in a scissor shape and hinged to the middle, the driving part is connected to the first assembly, and the driving part is connected to the second assembly. The moving end of the driving piece is hinged to the second swing arm. Through the design of the scissor fork frame, lifting of the supporting table can be achieved, a telescopic and lifting structure is formed by means of fixed arrangement of the two first assemblies and the two second assemblies and hinged connection of the first swing arm and the second swing arm, when the driving piece works, the second swing arm is pushed to move, and then through interaction of the swing arms, the supporting table can be lifted up and down. The stress condition of the fork frame is effectively improved, and the stability and the lifting precision of the supporting table in the lifting process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fork lifting, in particular to a scissor fork lifting device. Background Art

[0002] Most of the driving mechanisms of existing scissor fork lifting devices are arranged on one of the forks of the scissor fork, resulting in poor stability of the fork and limited installation space for the driving mechanism, making the device inconvenient to use and maintain. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a scissor fork lifting device.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] An embodiment of the present utility model provides a scissors fork frame lifting device, comprising: a support platform and a lifting module, the lifting module is used to drive the support platform to rise and fall, the lifting module comprises a first component, a second component, a first swing arm, a second swing arm and a driving member, the number of the first component and the second component are both two, and one group of the first component and the second component is fixedly arranged horizontally, and the other group of the first component and the second component is fixed to the bottom of the support platform, the two first components and the second components are arranged vertically opposite to each other, one end of the first swing arm is hinged to the first component, and the other end is hinged to the second component connected to the support platform, one end of the second swing arm is hinged to the second component, and the other end is hinged to the first component connected to the support platform, so that the first swing arm and the second swing arm are arranged in a scissors shape, the first swing arm and the second swing arm are hinged in the middle, the driving member is connected to the first component, and the moving end of the driving member is hinged to the second swing arm.

[0006] In a specific embodiment, the first component includes a first base plate, a slide rail, a slider, a mounting plate and a first mounting seat, the slide rail is fixed to the first base plate, the slider is slidably connected to the slide rail, the mounting plate is fixed above the slider, the first mounting seat is fixed above the mounting plate, the lower end of the first swing arm is hinged to the first mounting seat, and the driving member is connected to the first base plate.

[0007] In a specific embodiment, the second component includes a second base plate and a second mounting base, the second mounting base is fixed to the second base plate, and the lower end of the second swing arm is hinged to the second mounting base.

[0008] In a specific embodiment, the number of the first swing arms and the number of the second swing arms are both two, and the two groups of the first swing arms and the second swing arms are symmetrically arranged to form an inner and outer scissors fork structure.

[0009] In a specific embodiment, a guide rail member is further provided in the area of ​​the first bottom plate located inside the slide rail, the guide rail member is movably connected to a limiting wheel, the limiting wheel is hinged to a mounting frame, and the mounting frame is fixed to the bottom of the mounting plate.

[0010] In a specific embodiment, the guide rail member is provided with a hollow area, the limiting wheel is located in the hollow area, and the bottom or top of the limiting wheel contacts the guide rail member.

[0011] In a specific embodiment, the axis at which the limiting wheel is hinged to the mounting frame is located in a horizontal direction and is perpendicular to the linear direction of the slide rail.

[0012] In a specific embodiment, the driving member is hinged to the first bottom plate.

[0013] In a specific embodiment, there are two lifting modules, which are distributed on both sides of the bottom of the support platform.

[0014] In a specific embodiment, the driving member is a retractable cylinder.

[0015] The scissor fork frame lifting device of the present invention has the following advantages compared with the prior art: through the design of the scissor fork frame, the lifting and lowering of the support platform can be conveniently realized; this device utilizes the fixed arrangement of two groups of first components and second components and the hinged connection of the first swing arm and the second swing arm to form a structure that can be extended and lifted; when the driving member is working, it pushes the second swing arm to move, and then through the interaction of the swing arms, the support platform is lifted and lowered, effectively improving the stress condition of the fork frame and improving the stability and lifting accuracy of the support platform during the lifting movement.

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic diagram of the structure of the scissor fork lifting device provided by the utility model;

[0019] Figure 2 for Figure 1 A partial enlarged schematic diagram;

[0020] Figure 3 A side view schematic diagram of the scissor fork lifting device provided by the utility model;

[0021] Figure 4 for Figure 3 A partial enlarged schematic diagram of B in the middle;

[0022] Figure 5 This is a schematic diagram of the internal structure of the first component provided by the utility model. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0028] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0029] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0030] See also Figures 1 to 5The specific embodiment shown in the figure, the utility model discloses a scissors fork frame lifting device, including: a support platform 10 and a lifting module 20, the lifting module 20 is used to drive the support platform 10 to rise and fall, the lifting module 20 includes a first component 21, a second component 22, a first swing arm 23, a second swing arm 24 and a driving member 25, the number of the first component 21 and the second component 22 are both two, and one group of the first component 21 and the second component 22 is fixedly arranged horizontally, and the other group of the first component 21 and the second component 22 is fixed to the bottom of the support platform 10, the two first components 21 and the second component 22 are arranged vertically opposite to each other, one end of the first swing arm 23 is hinged to the first component 21, and the other end is hinged to the second component 22 connected to the support platform 10, one end of the second swing arm 24 is hinged to the second component 22, and the other end is hinged to the first component 21 connected to the support platform 10, so that the first swing arm 23 and the second swing arm 24 are arranged in a scissors shape, the first swing arm 23 and the second swing arm 24 are hinged in the middle, the driving member 25 is connected to the first component 21, and the moving end of the driving member 25 is hinged to the second swing arm 24.

[0031] Specifically, the design of the scissor fork frame facilitates the lifting and lowering of the support platform 10. This device utilizes the fixed arrangement of two sets of first components 21 and second components 22 and the hinged connection of the first swing arm 23 and the second swing arm 24 to form a structure that can be extended and lowered. When the driving member 25 moves, it pushes the second swing arm 24 to move. Through the interaction of the swing arms, the support platform 10 is lifted and lowered, effectively improving the force applied to the fork frame and enhancing the stability and lifting accuracy of the support platform 10 during lifting and lowering. In addition, traditional lifting devices have problems such as uneven force or concentrated force points. However, the design of the scissor fork frame makes the force applied during the lifting process more uniform. In particular, by only using the moving end to push the fork frame to move, unnecessary force points are reduced, thereby effectively improving the force applied to the fork frame. In addition, because the scissor fork frame lifting design makes the lifting process smoother and more uniform, it can improve the stability of the support platform 10 during lifting and lowering. At the same time, due to the improved force situation and optimized structure, the lifting accuracy can also be improved, allowing the support platform 10 to more accurately reach the predetermined lifting height.

[0032] In one embodiment, the first component 21 includes a first base plate 211, a slide rail 212, a slider 213, a mounting plate 214 and a first mounting seat 215, the slide rail 212 is fixed to the first base plate 211, the slider 213 is slidably connected to the slide rail 212, the mounting plate 214 is fixed above the slider 213, the first mounting seat 215 is fixed above the mounting plate 214, the lower end of the first swing arm 23 is hinged to the first mounting seat 215, and the driving member 25 is connected to the first base plate 211.

[0033] Specifically, the first base plate 211 serves as the foundation of the entire assembly and provides a stable support surface; the slide rail 212 is fixed to the first base plate 211, providing a precise guide for the slider 213, ensuring that the slider 213 slides smoothly on the slide rail 212 without offset or shaking; the slider 213 is slidably connected to the slide rail 212, and the position of the slider 213 on the slide rail 212 can be adjusted as needed, that is, by adjusting the position of the slider 213, the height adjustment of the lifting module 20 can be easily achieved to meet different lifting requirements; the mounting plate 214 is fixed to the slider 213 The weight above the mounting plate 214 is evenly transferred to the slide rail 212 and the first base plate 211 through the sliding connection between the slider 213 and the slide rail 212. The first mounting seat 215 is fixed above the mounting plate 214, providing a hinge point for the lower end of the first swing arm 23, so that the first swing arm 23 can be stably connected and transmit force. The driving member 25 is connected to the first base plate 211 and is connected to the second swing arm 24 through the moving end. When the driving member 25 is working, it pushes the second swing arm 24 to move through the moving end, thereby realizing the lifting and lowering movement of the lifting module 20. In addition, through the above design, the lifting module 20 is subjected to more uniform force during the lifting process, reducing unnecessary stress concentration and deformation.

[0034] In one embodiment, the second component 22 includes a second base plate 221 and a second mounting base 222 . The second mounting base 222 is fixed to the second base plate 221 , and the lower end of the second swing arm 24 is hinged to the second mounting base 222 .

[0035] Specifically, the second base plate 221 serves as the base of the second component 22, providing a stable support surface to ensure the stability of the entire lifting module 20 during the lifting process. The second mounting seat 222 is fixed on the second base plate 221, providing a reliable hinge point for the lower end of the second swing arm 24, so that the second swing arm 24 can be stably connected and transmit force. In addition, the lower end of the second swing arm 24 is hinged to the second mounting seat 222, forming a scissor-like structure with the first swing arm 23. This hinged connection method enables the first swing arm 23 and the second swing arm 24 to cooperate with each other to realize the lifting function of the lifting module 20. In addition, the design of the scissor fork frame makes the force more uniform during the lifting process, reduces unnecessary stress concentration and deformation, and improves the stability and service life of the lifting module 20.

[0036] Among them, the hinge point between the first mounting seat 215 and the first swing arm 23 is the first hinge point; the hinge point at the other end of the first swing arm 23 is the third hinge point; the hinge point between the middle of the first swing arm 23 and the middle of the second swing arm 24 is the middle hinge point; the hinge point between the second swing arm 24 and the second mounting seat 222 is the second hinge point; the hinge point at the other end of the second swing arm 24 is the fourth hinge point, and the distances between the first, second, third, fourth hinge points and the middle hinge point are all equal; the hinge point between the moving end of the driving member 25 and the second swing arm 24 is located between the middle hinge point and the fourth hinge point, and this hinge point is the fifth hinge point.

[0037] In other words, by setting the distances between the first, second, third, and fourth hinge points and the central hinge point to be equal, the stability and balance of the entire device can be ensured. This design allows the first swing arm 23 and the second swing arm 24 to move in a more uniform and coordinated manner under the action of the driver 25, avoiding structural instability or deformation caused by uneven force. In addition, the hinge point between the moving end of the driver 25 and the second swing arm 24 is located between the central hinge point and the fourth hinge point. The setting of this hinge point (i.e., the fifth hinge point) is crucial for achieving a specific motion trajectory. By adjusting the output force and motion speed of the driver 25, the motion mode and angle of the first swing arm 23 and the second swing arm 24 can be controlled, thereby achieving the desired lifting or other complex motion.

[0038] Specifically, when the moving end of the driving member 25 is extended, it pushes the fifth hinge point to swing around the second hinge point, and drives the fourth hinge point to swing around the second hinge point. At the same time, the slider 213 at the fourth hinge point moves linearly along the slide rail 212, so that the distance between the third and fourth hinge points is shortened. Due to the characteristics of the scissors fork structure, the first hinge point swings around the third hinge point. At the same time, the slider 213 at the first hinge point moves linearly along the slide rail 212, so that the distance between the first and second hinge points is shortened, thereby causing the support platform 10 to rise; conversely, when the moving end of the driving member 25 is retracted, the support platform 10 can be lowered.

[0039] In one embodiment, the number of the first swing arms 23 and the number of the second swing arms 24 are both two, and the two groups of the first swing arms 23 and the second swing arms 24 are symmetrically arranged to form an inner and outer scissor fork structure.

[0040] Specifically, the two groups of first swing arms 23 and second swing arms 24 are symmetrically arranged to form an internal and external scissor fork structure. This structure can support each other during the lifting process, enhance the rigidity of the entire device, and reduce deformation caused by uneven force. In addition, the design of the internal and external scissor fork structure allows the force to be evenly distributed to each swing arm, avoiding structural damage caused by excessive force at a single point. This method of dispersing force improves the load-bearing capacity and stability of the device. In addition, the symmetrical design of the internal and external scissor fork structure can reduce structural fatigue and damage caused by stress concentration. This design enables the entire device to maintain high stability and reliability during long-term use. In addition, the two groups of first swing arms 23 and second swing arms 24 can maintain synchronous movement during the lifting process to ensure the smoothness and accuracy of the lifting. This synchronous lifting method improves the lifting efficiency and reduces errors and failures caused by asynchronous lifting.

[0041] In one embodiment, there are two lifting modules 20 , which are distributed on both sides of the bottom of the support platform 10 .

[0042] Specifically, by arranging a set of lifting modules 20 on both sides of the bottom of the support platform 10, it is equivalent to providing two fulcrums for the device. These fulcrums can provide stable support force during the lifting process, effectively preventing the device from tilting or shaking due to uneven force. In addition, the two sets of lifting modules 20 are distributed on both sides of the bottom of the support platform 10, which can more evenly disperse the force during the lifting process. This way of dispersing the force helps to reduce structural damage caused by excessive force on a single point, thereby improving the stability of the entire device. In addition, the two sets of lifting modules 20 can achieve synchronous lifting through a synchronous control system. This synchronous control can ensure that the support platform 10 remains stable during the lifting process and reduce errors caused by asynchronous lifting.

[0043] In one embodiment, see Figure 5 As shown, the area of ​​the first base plate 211 located inside the slide rail 212 is further provided with a guide rail member 216, and the guide rail member 216 is movably connected to a limiting wheel 217, and the limiting wheel 217 is hinged with a mounting frame 218, and the mounting frame 218 is fixed to the bottom of the mounting plate 214.

[0044] Specifically, when the slide rails 212 and sliders 213 need to be inspected or replaced, the limiting wheels 217 can support the mounting plate 214 and the structure above it through the movable connection of the guide rail members 216. This design avoids the tedious process of completely disassembling the entire structure above the mounting plate 214, thereby greatly saving manpower and time. In addition, the support provided by the limiting wheels 217 allows maintenance personnel to more easily access the slide rails 212 and sliders 213 to perform necessary inspections, repairs, or replacements. This simplified operation process makes maintenance work more efficient and faster.

[0045] In one embodiment, the guide rail member 216 has a hollow area, the limiting wheel 217 is located in the hollow area, and the bottom or top of the limiting wheel 217 contacts the guide rail member 216 .

[0046] Specifically, during normal operation, the bottom of the limiting wheel 217 contacts the guide rail 216. This design ensures that the mounting plate 214 and the structure above it can move smoothly and accurately on the slide rail 212, providing a good guiding effect. In addition, by contacting the hollow area of ​​the guide rail 216, the limiting wheel 217 provides the necessary support for the mounting plate 214 and the structure above it. This support ensures the vertical stability of the entire mechanism and prevents deformation or displacement due to gravity or external forces. In addition, when an abnormal situation occurs, such as damage to the slide rail 212 or the fall of the slider 213, the upper portion of the limiting wheel 217 can contact the guide rail 216. This design effectively limits excessive vertical displacement of the limiting wheel 217, thereby preventing further deformation or damage to the entire mechanism. In addition, by limiting the displacement of the limiting wheel 217, it helps to reduce safety hazards caused by abnormal situations and ensures that the entire mechanism can maintain a relatively stable state even under adverse conditions, thereby improving the safety and reliability of the device.

[0047] In one embodiment, the axis at which the limiting wheel 217 is hinged to the mounting bracket 218 is located in a horizontal direction and is perpendicular to the linear direction of the slide rail 212 .

[0048] Specifically, the limiting wheel 217 is hinged to the mounting frame 218 in the horizontal direction, meaning that the limiting wheel 217 can rotate about this horizontal axis. This design ensures that the limiting wheel 217 can move smoothly in a direction perpendicular to the slide rail 212, without shaking or getting stuck due to uneven force or directional deviation. In addition, the hinge axis is perpendicular to the linear direction of the slide rail 212, allowing the limiting wheel 217 to better conform to the contour of the slide rail 212 during movement, maintaining stable contact and support. This design helps reduce friction and wear between the limiting wheel 217 and the slide rail 212, thereby extending its service life. In addition, due to the hinged connection between the limiting wheel 217 and the mounting frame 218, the limiting wheel 217 can more evenly distribute vertical forces to the mounting frame 218 when subjected to them. This design enhances the support strength of the entire mechanism and prevents structural damage or deformation caused by excessive force at a single point.

[0049] In one embodiment, the driving member 25 is hinged to the first bottom plate 211 .

[0050] Specifically, by hingedly connecting the driver 25 to the first base plate 211, it can be ensured that the entire mechanism can maintain a relatively stable state during the process of the driver 25 transmitting power. This stability helps to reduce damage to the device or performance degradation caused by vibration or impact. In addition, the hinged connection method enables the driver 25 to better adapt to different installation angles and position requirements; for example, in some application scenarios, it may be necessary to install the driver 25 on an inclined or curved surface. In this case, the hinged connection method provides greater flexibility and adaptability. In addition, the hinged connection method can reduce the friction and wear between the driver 25 and the first base plate 211. Since the driver 25 can swing or rotate within a certain range, it can avoid the problem of excessive friction and wear caused by fixed connection.

[0051] In one embodiment, the driving member 25 is a retractable cylinder.

[0052] Specifically, the retractable cylinder, acting as the driving element 25, can generate sufficient driving force to push or pull the second swing arm 24 into motion. This driving force is essential for the proper functioning of the device. Furthermore, the retractable cylinder possesses precise telescopic capabilities, meaning it can accurately control the height and distance of the second swing arm 24's movement. This precise control is particularly important for devices requiring high-precision operation, such as automated production lines and amusement rides. Furthermore, the retractable cylinder can be customized to suit different application scenarios and requirements. For example, parameters such as the cylinder's stroke, speed, and thrust can be adjusted as needed. This adaptability enables the device to be flexibly applied in a variety of scenarios to meet diverse needs. Furthermore, retractable cylinders typically feature a compact design, which saves significant space during installation and use. This is particularly important for devices with limited space or that require efficient space utilization. Furthermore, the retractable cylinder's relatively simple structure makes it easy to disassemble and repair, making it more convenient to handle malfunctions or maintenance, reducing maintenance costs and time.

[0053] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A scissor fork lifting device, characterized in that: include: A support platform and a lifting module, the lifting module is used to drive the support platform to rise and fall, the lifting module includes a first component, a second component, a first swing arm, a second swing arm and a driving member, the number of the first component and the second component are both two, and one group of the first component and the second component is fixed horizontally, and the other group of the first component and the second component is fixed to the bottom of the support platform, the two first components and the second components are vertically opposite to each other, one end of the first swing arm is hinged to the first component, and the other end is hinged to the second component connected to the support platform, one end of the second swing arm is hinged to the second component, and the other end is hinged to the first component connected to the support platform, so that the first swing arm and the second swing arm are arranged in a scissor shape, the first swing arm and the second swing arm are hinged in the middle, the driving member is connected to the first component, and the moving end of the driving member is hinged to the second swing arm.

2. The scissor fork lifting device according to claim 1, characterized in that: The first component includes a first base plate, a slide rail, a slider, a mounting plate and a first mounting seat. The slide rail is fixed to the first base plate, the slider is slidably connected to the slide rail, the mounting plate is fixed above the slider, the first mounting seat is fixed above the mounting plate, the lower end of the first swing arm is hinged to the first mounting seat, and the driving member is connected to the first base plate.

3. The scissor fork lifting device according to claim 2, characterized in that: The second component includes a second base plate and a second mounting base, the second mounting base is fixed to the second base plate, and the lower end of the second swing arm is hinged to the second mounting base.

4. The scissor fork lifting device according to claim 3, characterized in that: There are two first swing arms and two second swing arms, and the two groups of the first swing arms and the second swing arms are symmetrically arranged to form an inner and outer scissors fork structure.

5. The scissor fork lifting device according to claim 4, characterized in that: A guide rail member is further provided in the area of ​​the first bottom plate located inside the slide rail. The guide rail member is movably connected to a limiting wheel. The limiting wheel is hinged to a mounting bracket, and the mounting bracket is fixed to the bottom of the mounting plate.

6. The scissor fork lifting device according to claim 5, characterized in that: The guide rail component is provided with a hollow area, the limiting wheel is located in the hollow area, and the bottom or top of the limiting wheel contacts the guide rail component.

7. The scissor fork lifting device according to claim 5, characterized in that: The axis at which the limiting wheel is hinged to the mounting frame is located in the horizontal direction and is perpendicular to the linear direction of the slide rail.

8. The scissor fork lifting device according to claim 2, characterized in that: The driving member is hinged to the first bottom plate.

9. The scissor fork lifting device according to claim 1, characterized in that: There are two lifting modules, which are distributed on both sides of the bottom of the support platform.

10. The scissor fork lifting device according to claim 1, characterized in that: The driving member is a telescopic cylinder.

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