Lifting platform
By using a structural design that connects flexible hinges and wedge blocks, the problems of weak load capacity and low motion accuracy of existing lifting platforms are solved, and high-precision lifting motion is achieved.
Patent Information
- Application Number
- CN202423103870.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing lifting platforms that utilize wedge blocks for lifting motion have limited load capacity due to size constraints, and the workpiece table is prone to displacement along the sliding direction of the first wedge block during lifting, resulting in reduced motion accuracy.
The structure adopts a flexible hinge and wedge block connection. The two ends of the flexible hinge are fixedly connected to the base and the second wedge block respectively. The rotation axis is along the sliding direction of the first wedge block. The deformation of the flexible section ensures that the lifting process is not affected. The load balancing device increases the load capacity and prevents the second wedge block from displacing along the sliding direction of the first wedge block.
This improves the load capacity of the lifting platform and the motion accuracy of the workpiece table, prevents the second wedge block from sliding during the lifting process, and ensures the precise lifting and lowering motion of the workpiece table.
Smart Images
Figure CN223646223U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lifting device technology, and more specifically, to a lifting platform. Background Technology
[0002] A lifting platform is a work platform used to generate lifting motion. The prior art provides a lifting platform that uses the cooperation of wedge blocks to achieve the purpose of lifting. It includes a first wedge block that moves horizontally and a second wedge block that moves vertically. Under the action of the inclined surface cooperation between the second wedge block and the first wedge block, the horizontal movement of the first wedge block will be converted into the vertical movement of the second wedge block, thereby driving the workpiece table fixedly connected to the second wedge block to rise and fall.
[0003] However, existing lifting platforms that utilize wedge blocks for lifting motion have limited load capacity due to size constraints, allowing them to operate only under light loads. Furthermore, during lifting motion, the second wedge block often shifts horizontally under the action of the first wedge block. This causes the workpiece table to shift along the sliding direction of the first wedge block in addition to the required lifting motion, resulting in reduced workpiece table motion accuracy. Utility Model Content
[0004] The purpose of this utility model is to provide a lifting platform to solve the technical problem that existing lifting platforms that use wedge blocks to achieve lifting motion will have displacement along the sliding direction of the first wedge block, resulting in a reduction in the motion accuracy of the workpiece table.
[0005] The lifting platform provided by this utility model includes a base, a first wedge block, a second wedge block, a workpiece table, and a flexible hinge. The first wedge block is slidably mounted on the base, and the second wedge block engages with the inclined surface of the first wedge block. The workpiece table is fixedly connected to the second wedge block. The flexible hinge has a first segment, a second segment, and a flexible segment located between the first segment and the second segment. The first segment is fixedly connected to the base, the second segment is fixedly connected to the second wedge block, and the rotation axis of the flexible segment is along the sliding direction of the first wedge block.
[0006] Furthermore, the cross-section of the flexible hinge is ∩-shaped, with the two opposite sides of the ∩-shaped forming the first segment and the second segment respectively, and the horizontal side of the ∩-shaped forming the flexible segment.
[0007] Furthermore, the first segment has a plurality of first holes, which are arranged at intervals along the rotation axis; and / or, the second segment has a plurality of second holes, which are arranged at intervals along the rotation axis.
[0008] Furthermore, the lifting platform also includes a flexible hinge mounting base, which is fixedly connected to the base. The flexible hinge mounting base extends into the middle area of the U-shape, and the first segment is fixedly connected to the flexible hinge mounting base.
[0009] Furthermore, the lifting platform also includes a transition plate, which is disposed on both sides of the first section, and the first section is clamped and fixed between the transition plate and the flexible hinge mounting base.
[0010] Furthermore, the lifting platform also includes a load balancing device, which is fixedly connected to the workpiece table and the base, and is used to telescopically support the workpiece table along the lifting direction.
[0011] Furthermore, the load balancing device includes a magnetic spring.
[0012] Furthermore, the number of magnetic springs is multiple, and the multiple magnetic springs are arranged in a dispersed manner.
[0013] Furthermore, the lifting platform also includes a grating ruler, a measuring mounting base, and a reading head, wherein the measuring mounting base is fixedly mounted on the base, and the reading head is mounted on the measuring mounting base; the grating ruler is fixedly mounted on the first wedge block, and the grating ruler extends along the sliding direction of the first wedge block.
[0014] Furthermore, a first cross roller guide is provided between the first wedge block and the second wedge block, the first cross roller guide being configured to guide the second wedge block to slide; and / or, a second cross roller guide is provided between the first wedge block and the base, the second cross roller guide being configured to guide the first wedge block to slide; and / or, the lifting platform further includes a linear motor, the stator of the linear motor being fixedly disposed on the base, and the mover of the linear motor being drivenly connected to the first wedge block.
[0015] The beneficial effects of this utility model lifting platform are:
[0016] By setting up a lifting platform mainly composed of a base, a first wedge block, a second wedge block, a workpiece stage, and a flexible hinge, when the first wedge block slides relative to the base, the horizontal sliding of the first wedge block is converted into the lifting motion of the second wedge block under the action of the inclined surfaces of the first and second wedge blocks, thereby driving the workpiece stage, which is fixedly connected to the second wedge block, to rise and fall. Specifically, by fixing the two ends of the flexible hinge to the base and the second wedge block respectively, and with the rotation axis of the flexible section along the sliding direction of the first wedge block, during the process of the second wedge block driving the workpiece stage to rise and fall, on the one hand, the deformation of the flexible section can ensure that the lifting process of the second wedge block is not affected; on the other hand, the connection between the two ends of the flexible hinge and the base and the second wedge block can limit the degree of freedom of the second wedge block along the sliding direction of the first wedge block, preventing displacement of the second wedge block along the sliding direction of the first wedge block during the lifting process, thus ensuring the motion accuracy of the workpiece stage. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0018] Figure 1 A front view of the lifting platform provided in an embodiment of this utility model;
[0019] Figure 2 A schematic diagram of the lifting platform provided in an embodiment of this utility model;
[0020] Figure 3 A schematic diagram of the flexible hinge structure of the lifting platform provided in this embodiment of the utility model.
[0021] Explanation of reference numerals in the attached figures:
[0022] 1-Second wedge block; 2-First wedge block; 3-First crossed roller guide; 4-Flexible hinge; 5-Workpiece stage; 6-Base; 7-Flexible hinge mounting base; 8-Motor mover; 9-Motor stator; 10-Measuring mounting base; 11-Reading head; 12-Grating ruler; 13-Magnetic spring; 14-Adapter plate; 15-Second crossed roller guide;
[0023] 41-First section; 411-First hole; 42-Second section; 421-Second hole; 43-Flexible section. Detailed Implementation
[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit it.
[0025] Figure 1 This is the front view of the lifting platform provided in this embodiment. Figure 2 This is a structural schematic diagram of the lifting platform provided in this embodiment. Figure 1 and Figure 2 As shown, this embodiment provides a lifting platform, including a base 6, a first wedge block 2, a second wedge block 1, a workpiece table 5, and a flexible hinge 4. Specifically, the first wedge block 2 is slidably installed on the base 6, the second wedge block 1 is inclinedly engaged with the first wedge block 2, and the workpiece table 5 is fixedly connected to the second wedge block 1.
[0026] Figure 3 This is a schematic diagram of the flexible hinge 4 of the lifting platform provided in this embodiment. Please refer to [link / reference needed]. Figure 1 and combined Figure 3 In this embodiment, the flexible hinge 4 has a first segment 41, a second segment 42 and a flexible segment 43 located between the first segment 41 and the second segment 42. The first segment 41 is fixedly connected to the base 6, the second segment 42 is fixedly connected to the second wedge block 1, and the rotation axis of the flexible segment 43 is along the sliding direction of the first wedge block 2.
[0027] By setting up a lifting platform mainly composed of a base 6, a first wedge block 2, a second wedge block 1, a workpiece table 5, and a flexible hinge 4, when the first wedge block 2 slides relative to the base 6, the horizontal sliding of the first wedge block 2 is converted into the lifting motion of the second wedge block 1 under the action of the inclined surfaces of the first wedge block 2 and the second wedge block 1, thereby driving the workpiece table 5, which is fixedly connected to the second wedge block 1, to rise and fall. Specifically, by fixing the two sections of the flexible hinge 4 to the base 6 and the second wedge block 1 respectively, and with the rotation axis of the flexible section 43 along the sliding direction of the first wedge block 2, during the process of the second wedge block 1 driving the workpiece table 5 to rise and fall, on the one hand, the deformation of the flexible section 43 can ensure that the lifting process of the second wedge block 1 is not affected; on the other hand, the connection between the two sections of the flexible hinge 4 and the base 6 and the second wedge block 1 can limit the degree of freedom of the second wedge block 1 along the sliding direction of the first wedge block 2, preventing the second wedge block 1 from displacing along the sliding direction of the first wedge block 2 during the lifting process, thus ensuring the motion accuracy of the workpiece table 5.
[0028] It should be noted that, in this embodiment, the sliding direction of the first wedge block 2 can be determined by... Figure 2 The direction indicated by the middle arrow ab indicates that the rotation axis of the flexible segment 43 can also be represented by... Figure 2 The axis along which the middle arrow ab lies is used to represent this.
[0029] Please continue to refer to Figure 1 and Figure 3 In this embodiment, the cross-section of the flexible hinge 4 is ∩-shaped, with the two opposite sides of the ∩-shaped forming the first segment 41 and the second segment 42, and the horizontal side of the ∩-shaped forming the flexible segment 43.
[0030] This configuration ensures that when the second wedge block 1 rises, the second segment 42, which is fixedly connected to the second wedge block 1, rises synchronously, and the deformation of the flexible segment 43 extends the second segment 42 upward to ensure the smooth rise of the second wedge block 1; while when the second wedge block 1 falls, the second segment 42, which is fixedly connected to the second wedge block 1, falls synchronously, and the elasticity of the flexible segment 43 resets the second segment 42 downward.
[0031] This structural form of the flexible hinge 4 not only enables reliable deformation of the flexible segment 43 to ensure the smooth lifting and lowering of the second wedge block 1, but also makes the flexible hinge 4 lighter in weight.
[0032] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the lifting platform may also include a flexible hinge mounting base 7. Specifically, the flexible hinge mounting base 7 is fixedly connected to the base 6, and the flexible hinge mounting base 7 extends into the middle area of the U-shape. The first segment 41 is fixedly connected to the flexible hinge mounting base 7.
[0033] The aforementioned flexible hinge mounting base 7 provides an installation basis for the first segment 41 to be fixed on the base 6, facilitating the assembly and fixation of the flexible hinge 4 relative to the base 6.
[0034] Please continue to refer to Figure 3 In this embodiment, the first segment 41 has a plurality of first holes 411, which are arranged at intervals along the rotation axis.
[0035] This configuration allows the first segment 41 of the flexible hinge 4 to be connected to the flexible hinge mounting base 7 through multiple first holes 411, ensuring the assembly reliability of the flexible hinge 4 and the flexible hinge mounting base 7.
[0036] Please continue to refer to Figure 3 In this embodiment, similarly, the second segment 42 is provided with a plurality of second holes 421, which are arranged at intervals along the rotation axis.
[0037] This arrangement allows the second segment 42 of the flexible hinge 4 to be connected to the second wedge block 1 through multiple second holes 421, ensuring the assembly reliability of the flexible hinge 4 and the second wedge block 1.
[0038] Specifically, the flexible hinge 4 and the second wedge block 1 can be fixed by passing a fastening bolt through the second hole 421 and screwing it onto the second wedge block 1.
[0039] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the lifting platform may also include a transition plate 14. Specifically, the transition plate 14 and the flexible hinge mounting base 7 are respectively disposed on both sides of the first section 41, and the first section 41 is clamped and fixed between the transition plate 14 and the flexible hinge mounting base 7.
[0040] The aforementioned adapter plate 14 allows the first segment 41 of the flexible hinge 4 to be clamped between the adapter plate 14 and the flexible hinge mounting base 7. The limiting effect of the adapter plate 14 on the first segment 41 provides a certain degree of correction, effectively preventing the first segment 41 from expanding and deforming outward during the lifting and lowering movement of the second wedge block 1.
[0041] Specifically, fastening bolts can be passed through the adapter plate 14 and the first hole 411 in sequence and screwed onto the flexible hinge mounting base 7 to achieve clamping and fixing of the flexible hinge 4 between the adapter plate 14 and the flexible hinge mounting base 7.
[0042] Please continue to refer to Figure 1 In this embodiment, the lifting platform may also include a linear motor, wherein the motor stator 9 of the linear motor is fixedly mounted on the base 6, and the motor mover 8 of the linear motor is drivenly connected to the first wedge block 2.
[0043] This setting enables the motion drive of the first wedge block 2, achieving automatic movement of the first wedge block 2.
[0044] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the lifting platform may also include a load balancing device, wherein the load balancing device is fixedly connected to the workpiece table 5 and the base 6, and the load balancing device is used to support the workpiece table 5 in a telescopic manner along the lifting direction.
[0045] The aforementioned load balancing device allows most of the weight of the workpiece stage 5 to be borne by the load balancing device. On the one hand, this increases the load capacity of the workpiece stage 5; on the other hand, it reduces deformation caused by excessive force on the flexible hinge 4, thus providing a certain degree of protection for the flexible hinge 4. Moreover, since the load balancing device can provide some support for the workpiece stage 5, the weight directly acting on the second wedge block 1 is reduced, thereby reducing the pushing force that needs to be applied to the second wedge block 1 by the first wedge block 2, which helps to reduce the load on the linear motor.
[0046] Please continue to refer to Figure 1 and Figure 2In this embodiment, the load balancing device may include a magnetic spring 13.
[0047] This method of using a magnetic spring 13 as a load balancing device not only has high repeatability but also fast response.
[0048] Specifically, the connection between the magnetic spring 13 and the workpiece stage 5, as well as the connection between the magnetic spring 13 and the base 6, can both be achieved by fastening bolts.
[0049] Please continue to refer to Figure 1 and Figure 2 In this embodiment, there are four magnetic springs 13, which are arranged in a rectangular pattern.
[0050] The number of magnetic springs 13 in this form can provide four-point support for the workpiece stage 5, resulting in good support stability.
[0051] It should be noted that in other embodiments, the number and arrangement of magnetic springs 13 can take other forms. This embodiment is only used as an example to illustrate that the number of magnetic springs 13 is four and arranged in a rectangular shape.
[0052] Please continue to refer to Figure 1 In this embodiment, the lifting platform may further include a grating ruler 12, a measuring mounting base 10, and a reading head 11, wherein the measuring mounting base 10 is fixedly mounted on the base 6, and the reading head 11 is mounted on the measuring mounting base 10; the grating ruler 12 is fixedly mounted on the first wedge block 2, and the grating ruler 12 extends along the sliding direction of the first wedge block 2.
[0053] This configuration allows the sliding stroke of the first wedge block 2 to be obtained in real time by using the reading head 11 and the grating ruler 12 during the sliding process of the first wedge block 2 on the base 6, so as to detect the position of the first wedge block 2 and the second wedge block 1, thereby achieving precise control.
[0054] The position of the second wedge block 1 can be calculated by the angle of its inclined surface that mates with the first wedge block 2 and the sliding stroke of the first wedge block 2.
[0055] Please continue to refer to Figure 1 In this embodiment, a first cross roller guide rail 3 is provided between the first wedge block 2 and the second wedge block 1, and the first cross roller guide rail 3 is configured to guide the second wedge block 1 to slide.
[0056] This setting allows for guidance of the sliding process of the second wedge block 1, ensuring the smoothness of the sliding and the accuracy of the movement.
[0057] Please continue to refer to Figure 1In this embodiment, a second cross roller guide rail 15 is provided between the first wedge block 2 and the base 6. The second cross roller guide rail 15 is configured to guide the first wedge block 2 to slide.
[0058] This setting allows for guidance of the sliding process of the first wedge block 2, ensuring the smoothness of the sliding of the first wedge block 2 and the accuracy of its movement.
[0059] It should be noted that in this embodiment, "connection" mainly refers to connection through an intermediate component, that is, the two connected components are indirectly connected; "connection" mainly refers to direct connection, that is, the two connected components are directly connected.
[0060] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
[0061] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variations thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0062] In the above embodiments, descriptions of directions such as "up", "down", and "side" are based on the accompanying drawings.
[0063] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A lifting platform, characterized in that, The device includes a base (6), a first wedge block (2), a second wedge block (1), a workpiece stage (5), and a flexible hinge (4). The first wedge block (2) is slidably mounted on the base (6), and the second wedge block (1) is inclinedly engaged with the first wedge block (2). The workpiece stage (5) is fixedly connected to the second wedge block (1). The flexible hinge (4) has a first segment (41), a second segment (42), and a flexible segment (43) located between the first segment (41) and the second segment (42). The first segment (41) is fixedly connected to the base (6), and the second segment (42) is fixedly connected to the second wedge block (1). The rotation axis of the flexible segment (43) is along the sliding direction of the first wedge block (2).
2. The lifting platform according to claim 1, characterized in that, The cross-section of the flexible hinge (4) is ∩-shaped, and the two opposite sides of the ∩-shaped form the first segment (41) and the second segment (42) respectively. The horizontal side of the ∩-shaped forms the flexible segment (43).
3. The lifting platform according to claim 2, characterized in that, The first segment (41) has a plurality of first holes (411) arranged at intervals along the rotation axis; and / or, the second segment (42) has a plurality of second holes (421) arranged at intervals along the rotation axis.
4. The lifting platform according to claim 2, characterized in that, The lifting platform also includes a flexible hinge mounting base (7), which is fixedly connected to the base (6). The flexible hinge mounting base (7) extends into the middle area of the U-shape, and the first segment (41) is fixedly connected to the flexible hinge mounting base (7).
5. The lifting platform according to claim 4, characterized in that, The lifting platform also includes a transition plate (14), which is disposed on both sides of the first section (41) and the flexible hinge mounting base (7). The first section (41) is clamped and fixed between the transition plate (14) and the flexible hinge mounting base (7).
6. The lifting platform according to any one of claims 1-5, characterized in that, The lifting platform also includes a load balancing device, which is fixedly connected to the workpiece table (5) and the base (6), and is used to support the workpiece table (5) in a telescopic manner along the lifting direction.
7. The lifting platform according to claim 6, characterized in that, The load balancing device includes a magnetic spring (13).
8. The lifting platform according to claim 7, characterized in that, The number of magnetic springs (13) is multiple, and the multiple magnetic springs (13) are arranged in a dispersed manner.
9. The lifting platform according to any one of claims 1-5, characterized in that, The lifting platform also includes a grating ruler (12), a measuring mounting base (10), and a reading head (11), wherein the measuring mounting base (10) is fixedly mounted on the base (6), and the reading head (11) is mounted on the measuring mounting base (10); the grating ruler (12) is fixedly mounted on the first wedge block (2), and the grating ruler (12) extends along the sliding direction of the first wedge block (2).
10. The lifting platform according to any one of claims 1-5, characterized in that, A first cross roller guide (3) is provided between the first wedge block (2) and the second wedge block (1), and the first cross roller guide (3) is configured to guide the second wedge block (1) to slide; and / or, a second cross roller guide (15) is provided between the first wedge block (2) and the base (6), and the second cross roller guide (15) is configured to guide the first wedge block (2) to slide; and / or, the lifting platform further includes a linear motor, the motor stator (9) of the linear motor is fixedly disposed on the base (6), and the motor mover (8) of the linear motor is drivenly connected to the first wedge block (2).