Three degree of freedom work platform

Abstract

The utility model relates to the technical field of work platform, especially a three degrees of freedom work platform, including fixed platform, motion platform and drive mechanism, motion platform includes platform board and walking wheel, and platform board is set up on fixed platform through walking wheel, drive mechanism sets up on fixed platform, and the output of drive mechanism is connected with motion platform, and drive mechanism can drive motion platform to make linear motion along X axle, make linear motion along Y axle and make rotary movement around Z axle, the utility model discloses through the high integration, compact drive mechanism realizes the three degrees of freedom adjustment of motion platform in limited space, and only one connecting point is arranged between drive mechanism and motion platform, thereby will not produce the limitation to the stroke of motion platform, and drive mechanism does not need to interfere with the movement of motion platform when driving motion platform to move, is favorable to improve the positioning accuracy high, and simple structure, convenient operation.

Description

Technical Field

[0001] This utility model relates to the field of work platform technology, and in particular to a three-degree-of-freedom work platform. Background Technology

[0002] During the maintenance of subway and high-speed rail vehicles, the disassembly and installation of the vehicle's underframe equipment is a highly complex task. Currently, the disassembly and installation of rail vehicle underframe equipment generally uses a dedicated installation trolley. This trolley is controlled by operators, and accurate alignment of the underframe equipment requires repeated movements. While this trolley has transport and lifting functions, its positioning accuracy is low, failing to achieve automated alignment of the underframe equipment and thus hindering automated installation. To ensure high-precision positioning during the installation of rail vehicle underframe equipment and achieve automated installation, the work platform on the installation trolley needs to be capable of high-precision fine-tuning in multiple degrees of freedom. This would allow the trolley to automatically and accurately align the underframe equipment, further enabling automated disassembly and assembly of the underframe equipment.

[0003] To ensure proper alignment between the work platform on the equipment installation trolley and the equipment to be installed, the following methods are generally used:

[0004] One method involves having operators control the movement of the equipment installation trolley to align the equipment. However, in environments with heavy equipment and limited installation space, it is necessary to repeatedly move the installation trolley multiple times to achieve initial alignment. Subsequently, auxiliary tools such as pry bars may be needed to complete the installation, which affects the quality of the equipment installation.

[0005] Another Chinese utility model patent, CN215146735U, achieves the forward, backward, left, right, and rotational movements of a work platform by individually controlling three hydraulic cylinders or electric actuators. Specifically, it uses position fitting of the three actuators to achieve the target position. This requires very high control accuracy from the controller and the position accuracy of the actuators, resulting in high electrical system costs and complex software design. Furthermore, the two ends of the hydraulic cylinders or electric actuators are hinged to a fixed platform and a floating platform, respectively, with fixed hinge points forming two triangles on the fixed and floating platforms. To translate or rotate to a certain position, extremely high precision extension and retraction of the hydraulic cylinders or electric actuators are required. Otherwise, they will be limited by the two triangles, and the hydraulic cylinders or electric actuators may not be able to reach the stroke required by the controller, and may even struggle with the fixed platform and floating platform. In addition, the floating platform may not reach the set position, failing to meet the positioning accuracy requirements. Furthermore, this situation will cause the hydraulic cylinder or electric actuator to be constantly subjected to additional force. If a hydraulic cylinder solution is used, the hydraulic oil has a certain compressibility, which can eliminate the tension between the platform and the cylinder to some extent. However, the hydraulic cylinder has lower precision, which will result in lower positioning accuracy of the work platform. If an electric actuator is used, this additional force will cause the lead screw on the electric actuator to bend due to stress, affecting the life and performance of the electric actuator.

[0006] Therefore, it is necessary to provide a new three-degree-of-freedom working platform to solve the above-mentioned technical problems. Utility Model Content

[0007] The main purpose of this utility model is to provide a three-degree-of-freedom work platform, which aims to solve the problems that the existing three-degree-of-freedom work platforms have complex structures and cannot meet the positioning accuracy requirements.

[0008] To achieve the above objectives, the present invention proposes a three-degree-of-freedom work platform, comprising a fixed platform, a motion platform, and a drive mechanism. The motion platform includes a platform plate and wheels, with the platform plate mounted on the fixed platform via the wheels. The drive mechanism is mounted on the fixed platform, and its output end is connected to the motion platform. The drive mechanism is capable of driving the motion platform to move linearly along the X-axis, linearly along the Y-axis, and rotate around the Z-axis.

[0009] Optionally, the driving mechanism includes a Y-axis driving component, an X-axis driving component, and a rotary driving component. The Y-axis driving component is disposed on the fixed platform. The X-axis driving component is connected to the output end of the Y-axis driving component, and the Y-axis driving component can drive the X-axis driving component to move linearly along the Y-axis direction. The rotary driving component is connected to the output end of the X-axis driving component, and the X-axis driving component can drive the rotary driving component to move linearly along the X-axis direction. The output end of the rotary driving component is connected to the platform plate, and the rotary driving component can drive the platform plate to rotate around the Z-axis.

[0010] Optionally, the Y-axis drive assembly includes a slide base, a slider base, and a Y-axis drive component. The slide base is disposed on the fixed platform along the Y-axis direction; the slider base is slidably disposed on the slide base along the Y-axis direction; and the Y-axis drive component is disposed between the slide base and the slider base, and is capable of driving the slider base to slide relative to the slide base.

[0011] Optionally, the Y-axis drive assembly further includes a hinge seat, and both ends of the Y-axis drive member are respectively hinged to the slide base and the slider base through the hinge seat; the slider base includes a mounting part and a sliding part connected to each other, the mounting part is connected to the X-axis drive assembly, and the sliding part is provided with a sliding block that slides with the slide base.

[0012] Optionally, the mounting portion is provided with a slide rail arranged along the X-axis direction; the X-axis drive assembly is an electric push rod, which is disposed on the mounting portion, and the electric push rod passes through the slide rail and is connected to the rotary drive assembly;

[0013] Alternatively, the X-axis drive assembly may include an X-axis drive component, a lead screw, and a nut seat. The X-axis drive component is disposed on the mounting portion. The lead screw is connected to the output shaft of the X-axis drive component and extends into the slide rail. The nut seat is partially slidably disposed within the slide rail. The nut seat is disposed on the rotary drive assembly and threadedly connected to the lead screw. The X-axis drive component drives the lead screw to rotate, thereby causing the nut seat to move along the X-axis direction.

[0014] Optionally, the nut seat has radially limiting surfaces formed on both sides along the Y-axis and along the Z-axis; the shape of the slide rail matches the contour of the nut seat.

[0015] Optionally, the rotary drive assembly includes a mounting bracket, a rotary drive component, and a connecting disk. The mounting bracket is connected to the nut seat. The rotary drive component is disposed on the mounting bracket. The connecting disk is connected to the output shaft of the rotary drive component, and the rotary drive component can drive the connecting disk to rotate around the Z-axis.

[0016] Optionally, the bottom of the platform plate is provided with a limiting groove; the rotary drive assembly further includes a limiting block disposed on the connecting plate, the limiting block being embedded in the limiting groove to connect the connecting plate and the platform plate, and the limiting block being capable of radial limiting.

[0017] Optionally, a gap is provided between the side of the limiting block away from the connecting plate and the inner wall of the limiting groove.

[0018] Optionally, the fixed platform has a hollowed-out portion, the motion platform and the drive mechanism are respectively located on both sides of the fixed platform along the Z-axis direction, and the output end of the drive mechanism passes through the hollowed-out portion and is connected to the motion platform.

[0019] In this invention, the drive mechanism can drive the motion table to move linearly along the X-axis, linearly along the Y-axis, and rotate around the Z-axis on a fixed platform via its traveling wheels. This invention achieves three degrees of freedom adjustment of the motion table within a limited space through a highly integrated and compact drive structure. There is only one connection point between the drive mechanism and the motion table, thus not limiting the travel of the motion table. The drive mechanism does not interfere with the movement of the motion table while driving it, which is beneficial for improving positioning accuracy. Furthermore, the structure is simple and easy to operate. Attached Figure Description

[0020] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the three-degree-of-freedom working platform in an embodiment of this utility model;

[0022] Figure 2 This is a top view of the three-degree-of-freedom work platform in this embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the drive mechanism in an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the Y-axis drive assembly in an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the slider base in an embodiment of the present utility model;

[0026] Figure 6 This is a partial structural schematic diagram of the drive mechanism in an embodiment of the present utility model;

[0027] Figure 7 This is a partial cross-sectional view of the X-axis drive assembly in an embodiment of this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the rotary drive assembly in an embodiment of the present invention;

[0029] Figure 9 This is a schematic diagram of the platform plate in an embodiment of the present utility model;

[0030] Figure 10 This is a schematic diagram of the structure of the fixing plate in an embodiment of this utility model.

[0031] Explanation of icon numbers:

[0032] 1. Fixed platform; 1.1. Hollowed-out section; 2. Moving platform; 2.1. Platform plate; 2.1.1. Limiting groove; 2.2. Traveling wheel; 3. Drive mechanism; 3.1. Y-axis drive assembly; 3.1.1. Slide base; 3.1.2. Slider base; A. Mounting part; A1. Slide rail; B. Sliding part; B1. Sliding block; 3.1.3. Y-axis drive component; 3.1.4. Hinge seat; 3.2. X-axis drive assembly; 3.2.1. X-axis drive component; 3.2.2. Lead screw; 3.2.3. Nut seat; C. Limiting surface; 3.3. Rotary drive assembly; 3.3.1. Mounting support; 3.3.2. Rotary drive component; 3.3.3. Connecting plate; 3.3.4. Limiting block.

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "connection" and "fixation" should be interpreted broadly. For example, "fixation" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0039] This invention proposes a three-degree-of-freedom work platform, aiming to solve the problems of existing three-degree-of-freedom work platforms having complex structures and failing to meet positioning accuracy requirements.

[0040] like Figure 1 and Figure 2As shown, this embodiment provides a three-degree-of-freedom work platform, including a fixed platform 1, a motion platform 2, and a drive mechanism 3. The motion platform 2 includes a platform plate 2.1 and traveling wheels 2.2. The platform plate 2.1 is mounted on the fixed platform 1 via the traveling wheels 2.2. The drive mechanism 3 is mounted on the fixed platform 1, and its output end is connected to the motion platform 2. The drive mechanism 3 can drive the motion platform 2 to move linearly along the X-axis, linearly along the Y-axis, and rotate around the Z-axis on the fixed platform 1 via the traveling wheels 2.2. In actual operation, the drive mechanism 3 can drive the motion platform 2 to move linearly along the X-axis, linearly along the Y-axis, and rotate around the Z-axis on the fixed platform 1 via the traveling wheels 2.2. In this embodiment, the three-degree-of-freedom adjustment of the motion platform 2 is achieved within a limited space through a highly integrated and compact drive structure. There is only one connection point between the drive mechanism 3 and the motion platform 2, so there is no limitation on the stroke of the motion platform 2. The drive mechanism 3 does not interfere with the movement of the motion platform 2 while driving it, which is beneficial to improve positioning accuracy. The positioning accuracy is high, and the structure is simple and easy to operate. In this embodiment, the fixed platform 1 is set on a commonly used equipment installation trolley, and the traveling wheels 2.2 are omnidirectional wheels.

[0041] Among them, see reference Figure 3 The drive mechanism 3 includes a Y-axis drive assembly, an X-axis drive assembly, and a rotary drive assembly 3.3. The Y-axis drive assembly is mounted on the fixed stage 1. The X-axis drive assembly is connected to the output end of the Y-axis drive assembly, enabling the Y-axis drive assembly to move linearly along the Y-axis. The rotary drive assembly 3.3 is connected to the output end of the X-axis drive assembly, enabling the X-axis drive assembly to move linearly along the X-axis. The output end of the rotary drive assembly 3.3 is connected to the platform plate 2.1, enabling the platform plate 2.1 to rotate around the Z-axis. The drive mechanism 3, composed of the Y-axis drive assembly, X-axis drive assembly, and rotary drive assembly 3.3, has a compact structure and can achieve three degrees of freedom movement of the platform plate 2.1 without interference. It does not restrict the stroke of the motion stage 2, and the independent adjustment of the three degrees of freedom movement is beneficial to improving positioning accuracy.

[0042] Specifically, such as Figure 4As shown, the Y-axis drive assembly includes a slide base 3.1.1, a slider base 3.1.2, and a Y-axis drive component. The slide base 3.1.1 is mounted on the fixed platform 1 along the Y-axis direction; the slider base 3.1.2 is slidably mounted on the slide base 3.1.1 along the Y-axis direction; the Y-axis drive component is positioned between the slide base 3.1.1 and the slider base 3.1.2, and is capable of driving the slider base 3.1.2 to slide relative to the slide base 3.1.1. The Y-axis drive assembly is an actuator that controls the movement of the motion table 2 relative to the fixed platform 1 in the left-right direction (i.e., the Y-axis direction), and includes the slide base 3.1.1, the slider base 3.1.2, and the Y-axis drive component. The Y-axis drive component is the actuator of the Y-axis drive assembly, and the left-right movement of the entire Y-axis drive assembly is completed by the extension and retraction of the Y-axis drive component. In this embodiment, the Y-axis drive component is an electric linear actuator or a high-precision servo lead screw 3.2.2 (including a servo motor, a reducer, and a lead screw 3.2.2). The electric linear actuator has a very high positional accuracy (up to 0.1mm), which ensures high precision in the left and right positions of the motion table 2.

[0043] Furthermore, such as Figure 5 As shown, the Y-axis drive assembly also includes a hinge seat 3.1.4. Both ends of the Y-axis drive component are hinged to the slide base 3.1.1 and the slider base 3.1.2 respectively through the hinge seat 3.1.4. The slider base 3.1.2 includes a mounting part A and a sliding part B connected to each other. The mounting part A is connected to the X-axis drive assembly, and the sliding part B is provided with a sliding block B1 that slides and engages with the slide base 3.1.1.

[0044] The slide base 3.1.1 includes a slotted plate and C-shaped channel steel. The slotted plate is fixed to the fixed platform 1 by welding or other means; the C-shaped channel steel is fixed to the slotted plate and has two or more channels; the hinge seat 3.1.4 is welded to the slotted plate and is used to install the Y-axis drive component. The slide base 3.1.1 is the load-bearing and limiting component of the entire actuator. The sliding part B includes a sliding plate and a slider. The sliding plate has two or more sliders, which can move left and right within the C-shaped slot, thereby enabling the entire slider base 3.1.2 to move left and right, thus enabling the motion table 2 to move left and right relative to the fixed platform 1. The slider base 3.1.2 is also provided with a slide rail A1, which is an elliptical inner slide rail A1. This slide rail A1 is the mating track for the X-axis drive component and is used to realize the forward and backward movement of the motion table 2. The hinge seat 3.1.4 is welded to the sliding plate and is used to install the Y-axis drive component.

[0045] In one example of this embodiment, the mounting part A has a slide rail A1 arranged along the X-axis direction; the X-axis drive assembly is an electric push rod, which is mounted on the mounting part A, and the electric push rod passes through the slide rail A1 and is connected to the rotary drive assembly 3.3. In another example of this embodiment, as... Figure 7As shown, the X-axis drive assembly includes an X-axis drive component, a lead screw 3.2.2, and a nut seat 3.2.3. The X-axis drive component is mounted on mounting part A. The lead screw 3.2.2 is connected to the output shaft of the X-axis drive component and extends into slide rail A1. Part of the nut seat 3.2.3 is slidably mounted within slide rail A1. The nut seat 3.2.3 is mounted on the rotary drive assembly 3.3 and threadedly connected to the lead screw 3.2.2. The X-axis drive component drives the lead screw 3.2.2 to rotate, thereby moving the nut seat 3.2.3 along the X-axis direction. The X-axis drive component includes a servo motor and a reducer. The servo motor is equipped with a rotary encoder, which enables high-precision control of the rotation number and angle of the servo motor and lead screw, thereby ensuring the positional accuracy of the front and rear actuators. The nut seat 3.2.3 has an internal thread that matches the lead screw. The forward and reverse rotation of the X-axis drive component causes the nut seat 3.2.3 to move forward or backward along the slide rail A1, thereby driving the motion table 2 to move in the front-back direction relative to the fixed table 1. Because the X-axis drive component is a high-precision servo electric lead screw, the front-back position accuracy of the motion platform can be guaranteed (up to 0.1mm).

[0046] Among them, see reference Figure 6 The nut seat 3.2.3 has radial limiting surfaces C on both sides along the Y-axis, which are set along the Z-axis. The shape of the slide rail A1 matches the contour of the nut seat 3.2.3. The limiting surface C can be a plane or a curved surface. When the limiting surface C is a curved surface, the contour of the nut seat 3.2.3 can be directly designed as an ellipse, which can both slide with the slide rail A1 and achieve radial limiting.

[0047] In this embodiment, see Figure 8 The rotary drive assembly 3.3 includes a mounting bracket 3.3.1, a rotary drive component 3.3.2, and a connecting plate 3.3.3. The mounting bracket 3.3.1 is connected to the nut seat 3.2.3. The rotary drive component 3.3.2 is mounted on the mounting bracket 3.3.1. The connecting plate 3.3.3 is connected to the output shaft of the rotary drive component 3.3.2, and the rotary drive component 3.3.2 can drive the connecting plate 3.3.3 to rotate around the Z-axis. In this embodiment, the rotary drive component 3.3.2 is a servo geared motor, which is the actuator of the rotary drive assembly 3.3. It drives the rotation of the connecting plate 3.3.3 through the servo geared motor, thereby driving the rotation of the motion table 2. In addition, the servo geared motor can control the number of rotations of the motor with high precision, thereby controlling the rotation angle of the motion table 2 with high precision (accuracy up to 0.1°). The mounting bracket 3.3.1 is used to mount the servo geared motor and is fixed to the nut seat 3.2.3.

[0048] Specifically, such as Figure 9 and Figure 10The bottom of the platform plate 2.1 is provided with a limiting groove 2.1.1; the rotary drive assembly 3.3 also includes a limiting block 3.3.4 disposed on the connecting plate 3.3.3. The limiting block 3.3.4 is embedded in the limiting groove 2.1.1 to connect the connecting plate 3.3.3 and the platform plate 2.1, and the limiting block 3.3.4 can perform radial limiting. The connecting plate 3.3.3 is fixed to the output shaft of the servo geared motor by bolts. The connecting plate 3.3.3 is provided with a limiting block 3.3.4, which is embedded in the limiting groove 2.1.1 on the motion table 2, thereby enabling the motion table 2 to perform forward, backward, left, right and rotational movements while performing radial limiting.

[0049] Furthermore, a gap is provided between the side of the limiting block 3.3.4 away from the connecting plate 3.3.3 and the inner wall of the limiting groove 2.1.1. A certain gap is left between the upper surface of the limiting block 3.3.4 and the bottom of the limiting groove 2.1.1, thereby ensuring that the limiting block 3.3.4 is only used to transmit the force or torque that causes the motion table 2 to move forward, backward, left, right, and rotate, and does not bear the equipment load of the motion table 2. This prevents the entire drive mechanism 3 from bearing the equipment load on the motion table 2, and avoids the guide rail components (e.g., C-slot, slider, lead screw, nut seat 3.2.3, etc.) in the drive mechanism 3 from being subjected to other additional loads, thereby ensuring the motion accuracy of the drive mechanism 3 and correspondingly improving the service life of the drive mechanism 3. In this embodiment, the shape of the limiting block 3.3.4 matches that of the limiting groove 2.1.1, and the limiting block 3.3.4 can be a cross block, spline, or other key structure.

[0050] In addition, see Figure 10 A hollow section 1.1 is provided on the fixed platform 1. The moving platform 2 and the drive mechanism 3 are respectively located on both sides of the fixed platform 1 along the Z-axis direction, and the output end of the drive mechanism 3 passes through the hollow section 1.1 and connects to the moving platform 2. The moving platform 2 and the drive mechanism 3 are respectively located on both sides of the fixed platform 1, which not only improves the space utilization and makes the structure compact, but also avoids mutual interference between the movement of the drive mechanism 3 and the movement of the moving platform 2, thus ensuring the positioning accuracy of the moving platform 2. The above description is only a preferred embodiment of this utility model and does not limit the patent scope of this utility model. All equivalent structural transformations made under the utility model concept and using the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included in the patent protection scope of this utility model.

Claims

1. A three-degree-of-freedom work platform, characterized in that, The device includes a fixed platform (1), a moving platform (2), and a drive mechanism (3). The moving platform (2) includes a platform plate (2.1) and wheels (2.2). The platform plate (2.1) is mounted on the fixed platform (1) via the wheels (2.2). The drive mechanism (3) is mounted on the fixed platform (1). The output end of the drive mechanism (3) is connected to the moving platform (2). The drive mechanism (3) can drive the moving platform (2) to move linearly along the X-axis, move linearly along the Y-axis, and rotate around the Z-axis.

2. The three-degree-of-freedom work platform as described in claim 1, characterized in that, The drive mechanism (3) includes a Y-axis drive assembly, an X-axis drive assembly, and a rotary drive assembly (3.3). The Y-axis drive assembly is mounted on the fixed platform (1). The X-axis drive assembly is connected to the output end of the Y-axis drive assembly, and the Y-axis drive assembly can drive the X-axis drive assembly to move linearly along the Y-axis. The rotary drive assembly (3.3) is connected to the output end of the X-axis drive assembly, and the X-axis drive assembly can drive the rotary drive assembly (3.3) to move linearly along the X-axis. The output end of the rotary drive assembly (3.3) is connected to the platform plate (2.1), and the rotary drive assembly (3.3) can drive the platform plate (2.1) to rotate around the Z-axis.

3. The three-degree-of-freedom work platform as described in claim 2, characterized in that, The Y-axis drive assembly includes a slide base (3.1.1), a slider base (3.1.2), and a Y-axis drive component. The slide base (3.1.1) is disposed on the fixed platform (1) along the Y-axis direction; the slider base (3.1.2) is slidably disposed on the slide base (3.1.1) along the Y-axis direction; the Y-axis drive component is disposed between the slide base (3.1.1) and the slider base (3.1.2) and is capable of driving the slider base (3.1.2) to slide relative to the slide base (3.1.1).

4. The three-degree-of-freedom work platform as described in claim 3, characterized in that, The Y-axis drive assembly further includes a hinge seat (3.1.4), and the two ends of the Y-axis drive member are respectively hinged to the slide base (3.1.1) and the slider base (3.1.2) through the hinge seat (3.1.4); the slider base (3.1.2) includes a mounting part (A) and a sliding part (B) connected to each other, the mounting part (A) is connected to the X-axis drive assembly, and the sliding part (B) is provided with a sliding block (B1) that slides and engages with the slide base (3.1.1).

5. The three-degree-of-freedom work platform as described in claim 4, characterized in that, The mounting part (A) is provided with a slide rail (A1) arranged along the X-axis direction; the X-axis drive assembly is an electric push rod, which is disposed on the mounting part (A), and the electric push rod passes through the slide rail (A1) and is connected to the rotary drive assembly (3.3); Alternatively, the X-axis drive assembly may include an X-axis drive component, a lead screw (3.2.2), and a nut seat (3.2.3). The X-axis drive component is disposed on the mounting portion (A). The lead screw (3.2.2) is connected to the output shaft of the X-axis drive component and extends into the slide rail (A1). A portion of the nut seat (3.2.3) is slidably disposed within the slide rail (A1). The nut seat (3.2.3) is disposed on the rotary drive assembly (3.3) and threadedly connected to the lead screw (3.2.2). The X-axis drive component drives the lead screw (3.2.2) to rotate, thereby causing the nut seat (3.2.3) to move along the X-axis direction.

6. The three-degree-of-freedom work platform as described in claim 5, characterized in that, The nut seat (3.2.3) has a limiting surface (C) for radial limiting on both sides along the Y-axis and along the Z-axis; the shape of the slide (A1) matches the contour of the nut seat (3.2.3).

7. The three-degree-of-freedom work platform as described in claim 6, characterized in that, The rotary drive assembly (3.3) includes a mounting bracket (3.3.1), a rotary drive component (3.3.2), and a connecting plate (3.3.3). The mounting bracket (3.3.1) is connected to the nut seat (3.2.3). The rotary drive component (3.3.2) is mounted on the mounting bracket (3.3.1). The connecting plate (3.3.3) is connected to the output shaft of the rotary drive component (3.3.2). The rotary drive component (3.3.2) can drive the connecting plate (3.3.3) to rotate around the Z-axis.

8. The three-degree-of-freedom work platform as described in claim 7, characterized in that, The bottom of the platform plate (2.1) is provided with a limiting groove (2.1.1); the rotary drive assembly (3.3) further includes a limiting block (3.3.4) disposed on the connecting disk (3.3.3), the limiting block (3.3.4) being embedded in the limiting groove (2.1.1) to connect the connecting disk (3.3.3) and the platform plate (2.1), and the limiting block (3.3.4) being capable of radial limiting.

9. The three-degree-of-freedom work platform as described in claim 8, characterized in that, A gap is provided between the side of the limiting block (3.3.4) away from the connecting plate (3.3.3) and the inner wall of the limiting groove (2.1.1).

10. The three-degree-of-freedom work platform as described in any one of claims 1 to 9, characterized in that, The fixed platform (1) has a hollowed-out section (1.1). The moving platform (2) and the driving mechanism (3) are respectively located on both sides of the fixed platform (1) along the Z-axis direction, and the output end of the driving mechanism (3) passes through the hollowed-out section (1.1) and is connected to the moving platform (2).

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