A low-friction large-diameter arc-shaped sliding platform based on a gimbal ball array and a method

Abstract

This invention relates to the field of diameter arc-shaped sliding platform technology, and proposes a low-friction, large-diameter arc-shaped sliding platform and method based on a universal ball array. In this platform: the displacement sensor mounting beam and the displacement sensor mounting column are connected by bolts and are adjusted according to the height of the displacement sensor; the displacement sensor mounting base is bolted to the displacement sensor mounting beam and is adjusted according to the horizontal position of the displacement sensor; the displacement sensor signal enables the drive mechanism to generate displacement, driving the load mounting platform to slide, thus solving the sliding control problem. This invention uses a double-layer universal ball to clamp the sliding platform, forming a sliding constraint; a large-diameter arc groove forms the sliding platform trajectory; and a retractable lateral sliding constraint rod forms an adjustable lateral sliding structure, together forming a bidirectional, high-load-bearing sliding platform body; a multi-degree-of-freedom adjustable displacement sensor and a drive actuator serve as the sensing and driving mechanisms of the sliding platform, jointly achieving the following control of the sliding platform.

Description

Technical Field

[0001] This invention relates to the field of diameter arc sliding platform technology, and in particular to a low-friction large-diameter arc sliding platform and method based on a universal ball array. Background Technology

[0002] Sliding platforms, as crucial components, are widely used in logistics, heavy equipment manufacturing, and precision manufacturing. Their load-bearing capacity and friction are essential for precise control. Especially in specific scenarios, sliding platforms not only perform linear motion but also require large-diameter circular movements. Generally, sliding platforms are constructed using slide rails and sliding pairs. This type of platform offers precise operation but has a relatively low load-bearing capacity, and large-diameter circular arc slide rails exceeding 3 meters are difficult to manufacture. Furthermore, with conventional slide rails and sliding pairs, the sliding platform is difficult to adjust after installation, and the installation schedule is critical, making it inconvenient for engineering use.

[0003] Omnidirectional balls are a mature industrial component that has been around for the past 15 years. A single ball can bear a load of over 1 ton and has very low friction (rolling friction). This patent uses a double-layer omnidirectional ball clamp to construct a bidirectional, high-load-bearing, low-friction, large-diameter circular arc sliding platform, breaking through the limitations of traditional sliding platform structures and manufacturing difficulties. Summary of the Invention

[0004] Technical problem of this invention:

[0005] This addresses the problems of limited load-bearing capacity of sliding platforms, difficulty in manufacturing large-diameter arc slide rails (over 3 meters), difficulty in adjusting sliding platforms after installation, high requirements for installation progress, and inconvenience in engineering use.

[0006] Purpose of this invention:

[0007] Overcoming the limitations of traditional slide rails, sliding pairs, and the difficulty of machining large-diameter rails, a double-layer universal ball clamping system is adopted, forming a bidirectional high-load-bearing sliding platform in the form of a combination of large-diameter arc groove surfaces. Sensors and actuators serve as the sensing and driving mechanisms for the sliding platform, enabling the sliding platform to follow and control.

[0008] Technical solution of the present invention:

[0009] The sliding platform is held in place by a double-layered omnidirectional ball joint, forming a sliding constraint. A large-diameter arc groove forms the trajectory of the sliding platform, and a retractable lateral sliding constraint rod forms an adjustable lateral sliding structure, together forming the main body of the bidirectional high-load-bearing sliding platform.

[0010] A multi-degree-of-freedom adjustable displacement sensor and a drive actuator are used as the sensing and driving mechanisms of the sliding platform to jointly achieve the following control of the sliding platform.

[0011] Technical effects of the invention:

[0012] The sliding platform is held in place by a double-layered omnidirectional ball joint, forming a sliding constraint. A large-diameter arc groove forms the trajectory of the sliding platform, and a retractable lateral sliding constraint rod forms an adjustable lateral sliding structure, together forming the main body of the bidirectional high-load-bearing sliding platform.

[0013] A multi-degree-of-freedom adjustable displacement sensor and a drive actuator are used as the sensing and driving mechanisms of the sliding platform to jointly achieve the following control of the sliding platform. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of a low-friction, large-diameter arc-shaped sliding platform based on a universal ball array according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of a sliding platform according to an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the platform base 17 according to an embodiment of the present invention.

[0018] The components include: displacement sensor mounting column 1, drive mechanism base 2, displacement sensor mounting beam 3, drive mechanism 4, drive load sensor 5, platform drive rod 6, displacement sensor mounting base 7, displacement sensor mounting seat 8, displacement sensor 9, platform constraint nut 10, upper 60-type universal ball array 11, 60-type universal ball array mounting plate 12, platform constraint 13, sliding platform 14, lower 45-type universal ball array 15, 45-type universal ball array mounting plate 16, platform base 17, and floor mat 18.

[0019] Lateral rod end universal ball 14-1, lateral locking nut 14-2, lateral adjusting rod 14-3, load mounting platform 14-4, ball joint bearing 14-5, and pull ring 14-6;

[0020] Platform constraint column 17-1, preload sensor 17-2, force sensor mounting base 17-3, sensor locking nut 17-4, and arc groove bottom plate 17-5. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The features and illustrative embodiments of various aspects of the present invention will now be described in detail. Numerous specific details are set forth in the following detailed description to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention may be practiced without requiring some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the invention by illustrating examples of the invention. The invention is by no means limited to any specific setups and methods set forth below, but covers any improvements, substitutions, and modifications to structures, methods, and devices without departing from the spirit of the invention. Well-known structures and techniques are not shown in the drawings and the following description to avoid unnecessarily obscuring the invention.

[0023] It should be noted that, unless otherwise specified, the embodiments of the present invention and the features thereof can be combined with each other, and the various embodiments can be referenced and cited in each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of a low-friction, large-diameter arc-shaped sliding platform based on a universal ball array according to an embodiment of the present invention.

[0025] like Figure 1 As shown, a low-friction, large-diameter arc-shaped sliding platform based on a universal ball array comprises a displacement sensor mounting column 1, a drive mechanism base 2, a displacement sensor mounting beam 3, a drive mechanism 4, a drive load sensor 5, a platform drive rod 6, a displacement sensor mounting base 7, a displacement sensor mounting seat 8, a displacement sensor 9, a platform constraint nut 10, an upper 60-type universal ball array 11, a 60-type universal ball array mounting plate 12, a platform constraint 13, a sliding platform 14, a lower 45-type universal ball array 15, a 45-type universal ball array mounting plate 16, a platform base 17, and a floor mat 18.

[0026] Figure 2 This is a schematic diagram of a sliding platform according to an embodiment of the present invention.

[0027] like Figure 2The sliding platform 14 consists of four lateral rod end universal balls 14-1, four lateral locking nuts 14-2, four lateral adjusting rods 14-3, a load mounting platform 14-4, two ball joint bearings 14-5, and a pull ring 14-6.

[0028] The lateral adjusting rod 14-3 is cylindrical with threads on its circumference and a threaded hole at one end, symmetrically screwed into the threaded holes on both sides of the load mounting platform 14-4. A lateral locking nut 14-2 is mounted on the lateral adjusting rod 14-3. A universal ball joint 14-1 at the end of the lateral rod is screwed into the threaded hole of the lateral adjusting rod 14-3. Ball joint bearings 14-5 are screwed into the threaded holes on both sides of the load mounting platform 14-4. A pull ring 14-6 is threaded onto one side of the ball joint bearing 14-5.

[0029] Figure 3 This is a schematic diagram of the platform base 17 according to an embodiment of the present invention.

[0030] like Figure 3 The platform base 17 consists of four platform constraint columns 17-1, four preload sensors 17-2, four force sensor mounting seats 17-3, four sensor locking nuts 17-4, and an arc-groove base plate 17-5. The arc-groove base plate 17-5 has a large-diameter arc groove, with a ground pad 18 adhered to its bottom surface. After installing the sensor locking nuts 17-4, the force sensor mounting seats 17-3 are screwed into the corresponding threaded holes on the arc-groove base plate 17-5 and tightened. The preload sensors 17-2 are mounted on the force sensor mounting seats 17-3. The platform constraint columns 17-1 are mounted on the preload sensors 17-2.

[0031] The 45-type universal ball array mounting plate 16 is bolted onto the corresponding threaded holes of the arc groove bottom plate 17-5. The lower 45-type universal ball array 15 is evenly pressed into the mounting holes of the 45-type universal ball array mounting plate 16. The sliding platform 14 is placed on the lower 45-type universal ball array 15. The lateral adjustment rod 14-3 is adjusted until the universal balls 14-1 at the end of the lateral rod are in contact with the inner surface of the arc groove of the arc groove bottom plate 17-5. The displacement of the lateral adjustment rod 14-3 screwed into the load mounting platform 14-4 is adjusted, the position of the load mounting platform 14-4 is adjusted, and finally the lateral locking nut 14-2 is tightened.

[0032] At the four corners of the upper surface of the load mounting platform 14-4, 60-type universal ball array mounting plates 12 are bolted on. The upper 60-type universal ball array 11 is evenly pressed into the mounting holes of the 60-type universal ball array mounting plate 12. After the platform constraint 13 passes through the platform constraint column 17-1, the platform constraint nut 10 is installed on the platform constraint column 17-1. The tightening force of the platform constraint nut 10 is monitored by the preload sensor 17-2. The platform constraint nut 10 is tightened evenly and gradually until the readings of the four preload sensors 17-2 are approximately equal and meet the design requirements. The platform constraint 13 has a rectangular slot in the middle, through which the load can pass and be installed on the load mounting platform 14-4.

[0033] The displacement sensor mounting post 1 is bolted onto the drive mechanism base 2. The displacement sensor mounting beam 3 is bolted to the displacement sensor mounting post 1 and adjusted according to the height of the displacement sensor 9. The displacement sensor mounting base 7 is bolted onto the displacement sensor mounting beam 3 and adjusted according to the horizontal position of the displacement sensor 9. One end of the displacement sensor mounting seat 8 is threaded, and the other end is screwed into the displacement sensor mounting base 7 after the displacement sensor 9 is mounted. The drive mechanism 4 is mounted on the drive mechanism base 2, and the drive load sensor 5 is mounted on the threaded output end of the drive mechanism 4. One end of the platform drive rod 6 is threaded to the drive load sensor 5, and the other end is threaded to the ball joint bearing 14-5.

[0034] This invention proposes a low-friction, large-diameter arc-shaped sliding method based on a universal ball array. The method utilizes the aforementioned platform for sliding and includes the following steps:

[0035] S1, Install platform base 17 at the location where the sliding platform needs to be installed;

[0036] S2, then install the 45-type universal ball array mounting plate 16, the lower 45-type universal ball array 15, the sliding middle platform 14, the 60-type universal ball array mounting plate 12, the upper 60-type universal ball array 11, the platform constraint 13 and the platform constraint nut 10 in sequence.

[0037] S3, adjust the position of the lateral adjustment rod 14-3 so that the universal ball 14-1 at the end of each lateral rod contacts the inner surface of the arc groove bottom plate 17-5, and enable the sliding platform 14 to slide along the arc groove.

[0038] S4, Adjust the constraint nut 10 on the platform so that the reading of the preload sensor 17-2 reaches the design value, and the 45-type universal ball array and the 60-type universal ball array clamp the sliding platform 14 to achieve low resistance sliding between the constraint 13 on the platform and the arc groove bottom plate 17-5;

[0039] S5, the drive mechanism base 2 and the arc groove bottom plate 17-5 are fixedly installed on the ground or other platforms;

[0040] S6, the displacement sensor 9 senses the displacement change of the followed object / load, and through the control drive mechanism 4, realizes the following movement of the load mounting platform 14-4.

[0041] At the location where the sliding platform needs to be installed, install the platform base 17, and then install the 45-type universal ball array mounting plate 16, the lower 45-type universal ball array 15, the sliding platform 14, the 60-type universal ball array mounting plate 12, the upper 60-type universal ball array 11, the platform constraint 13, and the platform constraint nut 10 in sequence. Adjust the position of the lateral adjustment rod 14-3 so that the universal ball 14-1 at the end of each lateral rod contacts the inner surface of the arc groove bottom plate 17-5, allowing the sliding platform 14 to slide along the arc groove. Adjust the platform constraint nut 10 so that the preload sensor 17-2 reaches the design value, and the 45-type and 60-type universal ball arrays clamp the sliding platform 14 between the platform constraint 13 and the arc groove bottom plate 17-5 to achieve low-resistance sliding.

[0042] The drive mechanism base 2 and the arc-groove bottom plate 17-5 are fixedly installed on the ground or other platform. The displacement sensor 9 senses the displacement change of the followed object / load, and controls the drive mechanism 4 to realize the following movement of the load mounting platform 14-4.

[0043] It should be noted that, without conflict, those skilled in the art can flexibly adjust the order of the above operation steps or flexibly combine the above steps as needed. For the sake of brevity, various implementation methods will not be described in detail. In addition, the contents of the various embodiments can be referenced and cited interchangeably.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should be covered within the protection scope of the present invention.

Claims

1. A low-friction, large-diameter arc-shaped sliding platform based on a universal ball array, characterized in that, include: The components include: displacement sensor mounting column (1), drive mechanism base (2), displacement sensor mounting beam (3), drive mechanism (4), drive load sensor (5), platform drive rod (6), displacement sensor mounting base (7), displacement sensor mounting seat (8), displacement sensor (9), platform constraint nut (10), upper 60-type universal ball array (11), 60-type universal ball array mounting plate (12), platform constraint (13), sliding platform (14), lower 45-type universal ball array (15), 45-type universal ball array mounting plate (16), platform base (17), and floor mat (18). The sliding platform (14) includes: a lateral rod end universal ball (14-1), a lateral locking nut (14-2), a lateral adjusting rod (14-3), a load mounting platform (14-4), a ball joint bearing (14-5), and a pull ring (14-6), wherein: The lateral adjustment rod (14-3) is cylindrical with threads on its circumference and a threaded hole at one end. It is symmetrically screwed into the threaded holes on both sides of the load mounting platform (14-4). The lateral rod end universal ball (14-1) is screwed into the threaded hole of the lateral adjusting rod (14-3); The ball joint bearings (14-5) are screwed into the threaded holes on both sides of the load mounting platform (14-4); The pull ring (14-6) is threaded onto a ball joint bearing (14-5) on one side; The lateral adjustment rod (14-3) together with the installed lateral rod end universal ball (14-1) can be rotated to adjust the length and fixed by the lateral locking nut (14-2); the platform base (17) is provided with a large diameter arc groove, and a 45 type universal ball array mounting plate (16) is bolted in the large diameter arc groove, and a lower 45 type universal ball array (15) is embedded in the 45 type universal ball array mounting plate (16). A load mounting platform (14-4) is placed on the lower 45 type universal ball array (15). Adjusting the lateral adjustment rod (14-3) makes the lateral rod end universal ball (14-1) contact the inner surface of the large diameter arc groove of the platform base (17), providing lateral trajectory constraints for the sliding platform (14), so that the load mounting platform (14-4) can achieve large diameter arc sliding; A 60-type universal ball array mounting plate (12) is installed on the four corner threads of the upper surface of the load mounting platform (14-4), and an upper 60-type universal ball array (11) is embedded in the 60-type universal ball array mounting plate (12). A platform constraint (13) is placed on the upper 60-type universal ball array (11). The platform constraint (13) and the platform base (17) are fixed by the platform constraint nut (10). Through the clamping of the upper and lower universal ball arrays, the load mounting platform (14-4) can withstand a large vertical load while having bottom friction resistance. The displacement sensor mounting column (1) is bolted onto the drive mechanism base (2). The displacement sensor mounting beam (3) is bolted to the displacement sensor mounting column (1) and adjusted according to the height of the displacement sensor (9). The displacement sensor mounting base (7) is bolted onto the displacement sensor mounting beam (3) and adjusted according to the horizontal position of the displacement sensor (9). One end of the displacement sensor mounting seat (8) is threaded, and the other end is screwed into the displacement sensor mounting base (7) after the displacement sensor (9) is bolted on. The drive mechanism (4) is mounted on the drive mechanism base (2), and the drive load sensor (5) is mounted on the threaded output end of the drive mechanism (4). One end of the platform drive rod (6) is threaded to the drive load sensor (5), and the other end is threaded to the load mounting table (14-4) through a ball joint bearing (14-5). During use, the drive mechanism (4) can be displaced according to the signal of the displacement sensor (9), and the drive load mounting table (14-4) can slide, thus solving the sliding control problem.

2. The low-friction, large-diameter arc-shaped sliding platform based on a universal ball array as described in claim 1, characterized in that, in: The platform base (17) includes: 4 platform constraint columns (17-1), 4 preload sensors (17-2), 4 force sensor mounting bases (17-3), 4 sensor locking nuts (17-4), and an arc-groove bottom plate (17-5), wherein: The bottom plate (17-5) has a large-diameter arc groove to provide constraints on the arc trajectory of the sliding platform; A grounding pad (18) is attached to the bottom surface to reduce the deformation of the arc groove bottom plate (17-5) during the installation process with the ground, thereby improving the accuracy and stability of the large-diameter arc groove.

3. The low-friction, large-diameter arc-shaped sliding platform based on a universal ball array as described in claim 1, characterized in that, in: The 45-type universal ball array mounting plate (16) is installed on the corresponding threaded hole of the arc groove bottom plate (17-5) by bolts, and the lower 45-type universal ball array (15) is evenly squeezed into the mounting hole of the 45-type universal ball array mounting plate (16); The sliding platform (14) is placed on the lower 45-type universal ball array (15); at the four corners of the upper surface of the load mounting platform (14-4), the 60-type universal ball array mounting plate (12) is bolted on, and the upper 60-type universal ball array (11) is evenly pressed into the mounting hole of the 60-type universal ball array mounting plate (12); the platform constraint (13) is placed on the upper 60-type universal ball array (11) and forms a clamp with the platform base (17); the lower 45-type universal ball array (15) and the upper 60-type universal ball array (11) reduce the friction of the sliding platform (14) and provide greater stiffness and constraint in the vertical platform direction.

4. A low friction large diameter arcuate sliding platform based on an array of gimbal balls as claimed in claim 1, wherein, in: Adjust the lateral adjustment rod (14-3) until the universal ball (14-1) at the end of the lateral rod is in contact with the inner surface of the arc groove of the arc groove bottom plate (17-5), and adjust the displacement of the lateral adjustment rod (14-3) into the load mounting platform (14-4) to adjust the position of the load mounting platform (14-4), and finally tighten the lateral locking nut (14-2); to achieve the adjustment of the larger radial displacement of the load mounting platform (14-4).

5. A low-friction, large-diameter arc-shaped sliding platform based on a universal ball array as described in claim 1, characterized in that, in: After the platform constraint (13) is inserted into the platform constraint column (17-1), the platform constraint nut (10) is installed on the platform constraint column (17-1). The tightening force of the platform constraint nut (10) is monitored by the preload sensor (17-2). The platform constraint nut (10) is tightened evenly and gradually until the readings of the four preload sensors (17-2) are equal and the design requirements are met. The preload sensor (17-2) is mounted on the force sensor mounting base (17-3), and the platform constraint column (17-1) is mounted on the preload sensor (17-2). The platform constraint column (17-1), preload sensor (17-2), and force sensor mounting base (17-3) are connected to the platform constraint (13) and the arc groove bottom plate (17-5) to form a clamping design. The sensing signal of the preload sensor (17-2) achieves the visualization effect of the preload during installation and debugging, and realizes uniform installation.

6. A low friction large diameter arcuate sliding platform based on an array of gimbal balls as claimed in claim 1, wherein, in: The diameter of the large-diameter circular arc groove is greater than or equal to 2.8 meters.

7. A low-friction, large-diameter arc-shaped sliding platform based on a universal ball array as described in claim 1, characterized in that, in: Using an industrial-grade omnidirectional ball as the main body, the overall friction force does not exceed 2000N under a 2T constraint force, and it has a lateral adjustment capability of ±80mm.

8. A low-friction, large-diameter arc-shaped sliding method based on a universal ball array, comprising sliding using a low-friction, large-diameter arc-shaped sliding platform based on a universal ball array as described in any one of claims 1-4, characterized in that... The method includes the following steps: S1. Install the platform base (17) at the location where the sliding platform needs to be installed. S2, then install the 45-type universal ball array mounting plate (16), the lower 45-type universal ball array (15), the sliding platform (14), the 60-type universal ball array mounting plate (12), the upper 60-type universal ball array (11), the platform constraint (13) and the platform constraint nut (10) in sequence. S3, adjust the position of the lateral adjustment rod (14-3) so that the universal ball (14-1) at the end of each lateral rod contacts the inner surface of the arc of the corresponding arc groove bottom plate (17-5), and enable the sliding platform (14) to slide along the large diameter arc groove; S4, adjust the constraint nut (10) on the platform so that the reading of the preload sensor (17-2) reaches the design value, and the 45-type universal ball array and the 60-type universal ball array clamp the sliding platform (14) to achieve low resistance sliding between the constraint (13) on the platform and the arc groove bottom plate (17-5); S5, the drive mechanism base (2) and the arc groove bottom plate (17-5) are fixedly installed on the ground or other platforms; S6, the displacement sensor (9) senses the displacement change of the followed body / load, and through the control drive mechanism (4), realizes the following movement of the load mounting platform (14-4).

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