Parallel platform device

Abstract

The utility model discloses a parallel platform device which comprises a parallel platform body, a rotating shaft, a rotating piece and a protective cover, the parallel platform body comprises fixed seats, moving seats and a parallel driving assembly, and the fixed seats and the moving seats are arranged at intervals in the first direction. The parallel driving assembly is connected between the fixed seat and the moving seat and used for driving the moving seat to rotate relative to the fixed seat; the rotating shaft extends in the first direction and is connected to the surface of the side, away from the fixed base, of the moving base. The rotating piece sleeves the peripheral side of the rotating shaft and can rotate along the central axis of the rotating shaft. The protective cover sleeves the peripheral side of the parallel platform body and is connected with the rotating part. The end, away from the moving seat, of the protective cover is connected with the fixed seat. According to the parallel platform device provided by the embodiment of the utility model, torsion damage of the protective cover caused by the fact that the moving seat drives the protective cover to rotate can be prevented, so that the protective cover reliably performs dust prevention and liquid prevention on the parallel platform body, and the operation reliability of the parallel platform body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of parallel robots, in particular to a parallel platform device. Background Art

[0002] In the related art, in order to ensure the reliability of the parallel platform movement, a protective cover is provided to protect the parallel platform from dust and liquid. However, when the parallel platform rotates, the protective cover will be driven to rotate, causing the protective cover to be torsionally damaged, resulting in failure of the protective cover and unreliable structure. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a parallel platform device that can prevent the protective cover from being torsionally damaged by the protective cover due to the rotation of the moving seat, improve the reliability of the protective cover, and enable the protective cover to reliably protect the parallel platform body from dust and liquid, thereby ensuring the reliability of the operation of the parallel platform body and improving the overall performance of the parallel platform device.

[0004] The parallel platform device according to the embodiment of the utility model includes: a parallel platform body, including: a fixed seat, a moving seat and a parallel drive assembly, the fixed seat and the moving seat are arranged at intervals along a first direction, the parallel drive assembly is connected between the fixed seat and the moving seat, and the parallel drive assembly drives the moving seat to rotate relative to the fixed seat; a rotating shaft, extending along the first direction, and connected to a side surface of the moving seat away from the fixed seat; a rotating member, the rotating member is sleeved on the outer peripheral side of the rotating shaft and can rotate along the central axis of the rotating shaft; a protective cover, sleeved on the outer peripheral side of the parallel platform body, the end of the protective cover close to the moving seat is a first end, the first end is connected to the rotating member, the end of the protective cover away from the moving seat is a second end, and the second end is connected to the fixed seat.

[0005] According to the parallel platform device of the utility model, a rotating shaft is provided to connect the moving seat, and a rotating part rotatable around the central axis of the rotating shaft is provided to connect the protective cover, and the second end of the protective cover is connected and fixed to the fixed seat. When the parallel drive assembly drives the moving seat to rotate, the rotating part can remain unchanged in position relative to the fixed seat, and the rotating shaft rotates in the rotating part. This can prevent the moving seat from driving the protective cover to rotate and causing torsional damage to the protective cover, thereby improving the reliability of the protective cover, so that the protective cover can reliably prevent the parallel platform body from dust and liquid, thereby ensuring the reliability of the operation of the parallel platform body and improving the overall performance of the parallel platform device.

[0006] According to some embodiments of the present utility model, the parallel platform device further includes: an axial limit cover, which is connected to the rotating shaft and is located at an end of the rotating member away from the moving seat.

[0007] According to some embodiments of the utility model, the first end has a first inward connecting flange, and the rotating member includes: an adapter seat and a first pressure ring, the adapter seat is sleeved on the outer peripheral side of the rotating shaft, and the adapter seat is rotatable along the central axis of the rotating shaft, the adapter seat and the first pressure ring are respectively arranged on both sides of the first connecting flange in the first direction, and the adapter seat is connected to the first pressure ring to clamp the first connecting flange.

[0008] According to some embodiments of the utility model, a limiting hole is provided on one of the adapter seat and the moving seat, and a limiting column is connected to the other one, the limiting column is passed through the limiting hole, the limiting hole extends in an arc shape, the center of the extended arc of the limiting hole is located on the central axis of the rotating shaft, and the length of the inner arc of the limiting hole is greater than the diameter of the limiting column.

[0009] According to some embodiments of the present utility model, the center angle corresponding to the extended arc of the limiting hole is the limiting center angle, and the limiting center angle is greater than or equal to 10° and less than or equal to 60°.

[0010] According to some optional embodiments of the utility model, the rotating member further includes: a radial bearing, the inner ring of the radial bearing is connected and fixed to the rotating shaft, and the outer ring of the radial bearing is connected and fixed to the adapter.

[0011] According to some optional embodiments of the utility model, the rotating member further includes: a thrust bearing, and there are two thrust bearings, one of the two thrust bearings is arranged between the adapter seat and the moving seat, and the other is arranged between the adapter seat and the axial limit cover.

[0012] In some optional embodiments of the utility model, the adapter seat includes: an adapter body and an adapter ring, the adapter body is provided with an adapter cavity, the thrust bearing arranged between the adapter seat and the moving seat is a first bearing, the first bearing is passed through the adapter cavity, the adapter ring is connected to the outer peripheral side of the adapter body, the adapter ring is connected to one end of the opening of the adapter body, the first pressure ring is connected to the adapter ring, and the first connecting flange is clamped between the first pressure ring and the adapter ring.

[0013] In some optional embodiments of the utility model, the protective cover includes a telescopic part, a closing part and a first connecting flange, the telescopic part is telescopic along the first direction, the closing part is connected to the end of the telescopic part away from the fixed seat, the outer diameter of the closing part is smaller than the outer diameter of the telescopic part, and the first connecting flange is connected to the end of the closing part away from the telescopic part; the rotating part also includes: a cover, the cover has a shielding cavity opening toward the moving seat, the cover is sleeved on the outer peripheral side of the rotating shaft, and the closing part is penetrated into the shielding cavity; the part of the cover opposite to the adapter body is recessed toward the shielding cavity to form an avoidance groove, and the bottom wall of the avoidance groove opposite to its opening is connected to the adapter body, and the thrust bearing arranged between the adapter seat and the axial limit cover is a second bearing, the second bearing is arranged in the avoidance groove, and part of the axial limit cover is penetrated into the avoidance groove and stops with the second bearing.

[0014] In some optional embodiments of the present invention, a boss groove is provided at the opening end of the avoidance groove, and the surface opposite to the boss groove and its opening is a boss surface, and the axial limit cover abuts against the boss surface.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is an exploded view of a parallel platform device according to some embodiments of the utility model;

[0018] Figure 2 yes Figure 1 A three-dimensional diagram of the parallel platform body;

[0019] Figure 3 yes Figure 1 A stereogram of the axis of rotation in ;

[0020] Figure 4 yes Figure 1 A three-dimensional view of the axial limit cover in FIG.

[0021] Figure 5 yes Figure 1 A three-dimensional view of the protective cover in FIG.

[0022] Figure 6 yes Figure 1 A three-dimensional diagram of the adapter in FIG.

[0023] Figure 7 yes Figure 1 A stereogram of the first pressure ring in FIG.

[0024] Figure 8 yes Figure 1 A three-dimensional view of the cover in FIG.

[0025] Reference numerals:

[0026] 100. Parallel platform device;

[0027] 1. Parallel platform body; 11. Fixed seat; 12. Moving seat; 121. Limiting hole; 13. Parallel drive assembly;

[0028] 2. Rotating shaft; 21. Connecting seat; 22. Shaft body;

[0029] 3. Rotating member; 31. Adapter seat; 311. Adapter body; 312. Adapter ring; 32. First pressure ring; 33. Limiting column; 34. First bearing; 35. Second bearing; 36. Cover; 361. Avoidance groove;

[0030] 4. Protective cover; 41. First end; 42. Second end; 43. First connecting flange; 45. Telescopic portion; 46. Closing portion;

[0031] 5. Axial limit cover; 51. Threaded hole;

[0032] 6. Second pressure ring. DETAILED DESCRIPTION

[0033] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0034] The parallel platform device 100 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0035] Reference Figure 1-Figure 8According to the parallel platform device 100 of the embodiment of the utility model, it includes: a parallel platform body 1, a rotating shaft 2, a rotating member 3 and a protective cover 4, the parallel platform body 1 includes: a fixed seat 11, a moving seat 12 and a parallel drive assembly 13, the fixed seat 11 and the moving seat 12 are arranged at intervals along the first direction, the parallel drive assembly 13 is connected between the fixed seat 11 and the moving seat 12, and the parallel drive assembly 13 drives the moving seat 12 to rotate relative to the fixed seat 11; for example, the parallel drive assembly 13 can be a plurality of electric push rods arranged at intervals along the circumference of the fixed seat 11, the parallel drive assembly 13 can also be a plurality of hydraulic push rods arranged at intervals along the circumference of the fixed seat 11, and the parallel drive assembly 13 can also be a plurality of pneumatic push rods arranged at intervals along the circumference of the fixed seat 11.

[0036] For example, the parallel platform body 1 can be a parallel platform with six degrees of freedom, that is, the moving seat 12 can move in a first direction relative to the fixed seat 11, the moving seat 12 can move in a second direction relative to the fixed seat 11, the moving seat 12 can be tilted relative to the fixed seat 11, and the moving seat 12 can rotate relative to the fixed seat 11, wherein the first direction is perpendicular to the second direction.

[0037] The rotating shaft 2 extends along the first direction, and the rotating shaft 2 is connected to a side surface of the moving seat 12 away from the fixed seat 11; for example, referring to Figure 3 The rotating shaft 2 may include a connecting seat 21 and a shaft body 22. The connecting seat 21 is disc-shaped and is fixedly connected to the moving seat 12. The shaft body 22 is connected to the surface of the connecting seat 21 on the side away from the moving seat 12 and is located in the central area of ​​the connecting seat 21 to facilitate the connection between the rotating shaft 2 and the moving seat 12.

[0038] The rotating member 3 is sleeved on the outer peripheral side of the rotating shaft 2, and the rotating member 3 can rotate along the central axis of the rotating shaft 2; for example, the rotating member 3 can be sleeved on the shaft body 22. The protective cover 4 is sleeved on the outer peripheral side of the parallel platform body 1, and the end of the protective cover 4 close to the moving seat 12 is the first end 41, and the first end 41 is connected to the rotating member 3, and the end of the protective cover 4 away from the moving seat 12 is the second end 42, and the second end 42 is connected to the fixed seat 11. For example, the rotating member 3 can be a radial bearing, and the rotating shaft 2 and the first end 41 are respectively connected to the inner ring and the outer ring of the radial bearing to reduce the friction between the first end 41 and the rotating shaft 2.

[0039] It should be understood that the moving seat 12 is movable relative to the fixed seat 11 in the first direction, that is, the distance between the moving seat 12 and the fixed seat 11 in the first direction can be changed. In order to adapt to the change of the distance between the moving seat 12 and the fixed seat 11 in the first direction, the protective cover 4 should be retractable in the first direction. For example, the protective cover 4 can be a metal part so that the parallel platform device 100 can be applied to harsh environments (for example, the harsh environment can be a dusty environment, a high temperature environment, an acidic environment or an alkaline environment); the protective cover 4 can also be a rubber part so that the production cost of the protective cover 4 is low.

[0040] When the parallel drive assembly 13 drives the moving seat 12 to move in the first direction, the moving seat 12 can drive the rotating member 3 to move in the first direction, for example, the moving seat 12 can drive the rotating member 3 to move in the direction away from the fixed seat 11, and the protective cover 4 is stretched; the moving seat 12 can drive the rotating member 3 to move in the direction away from the fixed seat 11, and the protective cover 4 is compressed. When the parallel drive assembly 13 drives the moving seat 12 to rotate, the rotating shaft 2 rotates with the moving seat 12, the protective cover 4 remains unchanged relative to the fixed seat 11, and the protective cover 4 drives the rotating member 3 to remain unchanged relative to the fixed seat 11, and the rotating shaft 2 rotates in the rotating member 3.

[0041] By setting a rotating shaft 2 to connect the moving seat 12, and setting a rotating part 3 that can rotate around the central axis of the rotating shaft 2 to connect the protective cover 4, and the second end 42 of the protective cover 4 is connected and fixed to the fixed seat 11, when the parallel drive component 13 drives the moving seat 12 to rotate, the fixed seat 11 can limit the rotating part 3 by fixing the second end 42, so that the position of the rotating part 3 is fixed relative to the fixed seat 11, so that the rotating shaft 2 rotates in the rotating part 3, preventing the moving seat 12 from driving the protective cover 4 to rotate and causing torsional damage to the protective cover 4, thereby improving the reliability of the protective cover 4, so that the protective cover 4 can reliably prevent the parallel platform body 1 from dust and liquid, ensure the reliability of the operation of the parallel platform body 1, and improve the overall performance of the parallel platform device 100.

[0042] Moreover, this can also prevent the protective cover 4 from shrinking inward after being twisted and interfering with the movement of the parallel drive component 13, making the movement of the parallel drive component 13 more reliable, allowing the moving seat 12 to move according to the preset displacement, improving the reliability of the movement of the parallel platform body 1, and improving the overall performance of the parallel platform device 100.

[0043] According to the parallel platform device 100 of the utility model, a rotating shaft 2 is provided to connect the moving seat 12, and a rotating member 3 rotatable around the central axis of the rotating shaft 2 is provided to connect the protective cover 4, and the second end 42 of the protective cover 4 is connected and fixed to the fixed seat 11. When the parallel drive assembly 13 drives the moving seat 12 to rotate, the rotating member 3 can remain in a constant position relative to the fixed seat 11, and the rotating shaft 2 rotates in the rotating member 3. In this way, the moving seat 12 can be prevented from driving the protective cover 4 to rotate and causing torsional damage to the protective cover 4, thereby improving the reliability of the protective cover 4, so that the protective cover 4 can reliably prevent the parallel platform body 1 from dust and liquid, thereby ensuring the reliability of the operation of the parallel platform body 1 and improving the overall performance of the parallel platform device 100.

[0044] Reference Figure 1 and Figure 2 According to some embodiments of the utility model, the parallel platform device 100 further includes: an axial limit cover 5, which is connected to the rotating shaft 2 and is located at an end of the rotating member 3 away from the moving seat 12. For example, the axial limit cover 5 and the rotating shaft 2 can be connected by threads, or the axial limit cover 5 and the rotating shaft 2 can be connected by fasteners. For example, the axial limit cover 5 is connected to the shaft body 22.

[0045] When the parallel drive assembly 13 drives the moving seat 12 to move toward the fixed seat 11, the moving seat 12 can drive the axial limit cover 5 to move toward the fixed seat 11 through the rotating shaft 2. The axial limit cover 5 can drive the rotating part 3 to move toward the fixed seat 11 when abutting against the rotating part 3, thereby driving the first end 41 to move downward.

[0046] In this way, the axial limit cover 5 can play a certain limiting role on the rotating member 3, preventing the rotating member 3 from falling off the rotating shaft 2. In addition, the axial limit cover 5 can block the connection gap between the rotating member 3 and the rotating shaft 2, preventing dust or liquid from flowing from the connection gap between the rotating member 3 and the rotating shaft 2 to the parallel platform body 1, and forming a better seal for the parallel platform body 1.

[0047] For example, the outer diameter of the axial limit cover 5 is not less than the inner diameter of the first end 41, that is, the axial limit cover 5 can shield the connection point between the first end 41 and the rotating part 3, preventing dust or liquid from flowing from the connection gap between the rotating part 3 and the first end 41 to the parallel platform body 1, thereby forming a better seal for the parallel platform body 1.

[0048] Specifically, when the axial limit cover 5 is connected to the rotating shaft 2 through a threaded connection, the axial limit cover 5 can be formed with a threaded hole 51, and the rotating shaft 2 can be formed with an external thread that matches the threaded hole 51, so that the axial limit cover 5 and the rotating shaft 2 can be reliably fixed. At the same time, the threaded connection can also effectively reduce the connection gap between the axial limit cover 5 and the rotating shaft 2, prevent dust or liquid from flowing from the connection gap between the axial limit cover 5 and the rotating shaft 2 to the parallel platform body 1, and form a better seal for the parallel platform body 1.

[0049] Reference Figure 1 , Figure 4-Figure 6 According to some embodiments of the utility model, the first end 41 has an inward first connection flange 43, and the rotating member 3 includes: an adapter seat 31 and a first pressure ring 32. The adapter seat 31 is sleeved on the outer peripheral side of the rotating shaft 2, and the adapter seat 31 can rotate along the central axis of the rotating shaft 2. The adapter seat 31 and the first pressure ring 32 are respectively arranged on both sides of the first connection flange 43 in the first direction, and the adapter seat 31 is connected to the first pressure ring 32 to clamp the first connection flange 43. For example, one of the adapter seat 31 and the first pressure ring 32 is provided with a connection hole, and the other is provided with a matching hole corresponding to the connection hole, and a fastener is passed through the connection hole and the matching hole to connect and fix the adapter seat 31 and the first pressure ring 32.

[0050] In this way, the rotating member 3 and the first connecting flange 43 can be connected reliably, and the probability of a large connection gap between the rotating member 3 and the first connecting flange 43 can be reduced or avoided by squeezing and clamping, effectively preventing dust or liquid from flowing from the rotating member 3 and the first connecting flange 43 to the parallel platform body 1, and forming a good seal for the parallel platform body 1. Moreover, by the connection method of pressing the flange, the first end 41 can be made flatter as a whole, reducing the probability of friction between the first end 41 and the axial limit cover 5, improving the reliability of the protective cover 4, so that the protective cover 4 can reliably prevent the parallel platform body 1 from dust and liquid.

[0051] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, the second end 42 has a second connecting flange facing inward, the parallel platform device 100 further includes a second pressing ring 6, the fixing seat 11 is connected to the second pressing ring 6, and the second connecting flange is sandwiched between the fixing seat 11 and the second pressing ring 6. For example, one of the fixing seat 11 and the second pressing ring 6 is provided with a connecting hole, and the other is provided with a matching hole corresponding to the connecting hole, and a fastener is passed through the connecting hole and the matching hole to connect and fix the fixing seat 11 and the second pressing ring 6.

[0052] In this way, the fixing seat 11 can be reliably connected to the second connecting flange. Moreover, by tightening the flange connection method, the second end 42 can be made relatively flat as a whole, reducing the probability of friction between the second end 42 and other components, improving the reliability of the protective cover 4, and allowing the protective cover 4 to reliably prevent dust and liquid from the parallel platform body 1.

[0053] Reference Figure 1 and Figure 2 According to some embodiments of the present invention, one of the adapter seat 31 and the moving seat 12 is provided with a limiting hole 121, and the other is connected to a limiting column 33, the limiting column 33 is inserted into the limiting hole 121, the limiting hole 121 extends in an arc shape, the center of the extended arc of the limiting hole 121 is located on the central axis of the rotating shaft 2, and the length of the inner arc of the limiting hole 121 is greater than the diameter of the limiting column 33. For example, the limiting column 33 can be a cylindrical head screw, and the head of the cylindrical head screw is inserted into the limiting hole 121.

[0054] When the moving seat 12 is fixed relative to the fixed seat 11 and the adapter seat 31 is accidentally touched and rotated relative to the moving seat 12, the limiting column 33 rotates in the limiting hole 121 around the central axis of the rotating shaft 2. When the limiting column 33 abuts against the side wall of the limiting hole 121, the limiting column 33 is fixed relative to the moving seat 12. The limiting column 33 and the limiting hole 121 cooperate with each other to limit the adapter seat 31. This can prevent the adapter seat 31 from rotating at a large angle and causing torsional damage to the protective cover 4, thereby improving the reliability of the protective cover 4 and having a simple structure.

[0055] For example, refer to Figure 1 and Figure 2 The moving seat 12 is provided with a plurality of limiting holes 121, and the plurality of limiting holes 121 are arranged at circumferential intervals around the moving seat 12. The adapter seat 31 is provided with a plurality of limiting columns 33, and the number of the plurality of limiting holes 121 is the same as the number of the plurality of limiting columns 33 and corresponds one to one. In this way, the plurality of corresponding limiting holes 121 and the limiting columns 33 can cooperate with each other to form multiple limits for the adapter seat 31, effectively avoiding the probability of failure of the moving seat 12 to limit the adapter seat 31 due to the falling off of the limiting columns 33, thereby improving the reliability of the parallel platform device 100.

[0056] Reference Figure 1 and Figure 2According to some embodiments of the present invention, the center angle corresponding to the extended arc of the limiting hole 121 is the limiting center angle, and the limiting center angle is greater than or equal to 10° and less than or equal to 60°. For example, the limiting center angle can be 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19°, 20°, 21°, 22°, 23°, 24°, 25°, 26°, 27°, 28°, 29°, 30°, 31°, 32°, 33°, 34°, 35°, 36°, 37°, 38°, 39°, 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, or 60°.

[0057] The larger the center angle of the limiting circle is, the more effectively it can reduce the angle of rotation of the adapter seat 31 driven by the moving seat 12, and the more effectively it can reduce the angle of twisting of the protective cover 4 caused by the rotation of the moving seat 12; the smaller the center angle of the limiting circle is, the more effectively it can reduce the angle of rotation of the adapter seat 31 caused by accidental touch, and the more effectively it can reduce the angle of twisting of the protective cover 4 caused by accidental touch.

[0058] By setting the limit center angle to be greater than or equal to 10° and less than or equal to 60°, the angle at which the moving seat 12 drives the adapter seat 31 to rotate can be smaller, the angle at which the protective cover 4 is twisted due to the rotation of the moving seat 12 can be smaller, the angle at which the adapter seat 31 is rotated due to an accidental touch can be smaller, and the angle at which the protective cover 4 is twisted due to an accidental touch can be smaller, thereby effectively reducing the probability of torsional damage to the protective cover 4 and ensuring the reliability of the protective cover 4.

[0059] It should be understood that the limiting center angle is selected according to the angle at which the moving seat 12 can rotate relative to the central axis of the rotating shaft 2 .

[0060] For example, the angle at which the moving seat 12 can rotate relative to the central axis of the rotating shaft 2 is the moving center angle, and the ratio of the limiting center angle to the moving center angle is greater than or equal to 0.8 and less than or equal to 1.2. For example, the ratio of the limiting center angle to the moving center angle can be 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, or 1.2.

[0061] The larger the ratio of the limiting center angle to the moving center angle, the more effectively the angle of rotation of the adapter seat 31 driven by the moving seat 12 can be reduced, and the more effectively the angle of twisting of the protective cover 4 caused by the rotation of the moving seat 12 can be reduced; the smaller the ratio of the limiting center angle to the moving center angle, the more effectively the angle of rotation of the adapter seat 31 caused by accidental touch can be reduced, and the more effectively the angle of twisting of the protective cover 4 caused by accidental touch can be reduced.

[0062] By setting the ratio of the limit center angle to the movement center angle to be greater than or equal to 0.8 and less than or equal to 1.2, the angle at which the moving seat 12 drives the adapter seat 31 to rotate can be smaller, the angle at which the protective cover 4 is twisted due to the rotation of the moving seat 12 can be smaller, the angle at which the adapter seat 31 is rotated due to an accidental touch can be smaller, and the angle at which the protective cover 4 is twisted due to an accidental touch can be smaller, thereby effectively reducing the probability of torsional damage to the protective cover 4 and ensuring the reliability of the protective cover 4.

[0063] According to some optional embodiments of the utility model, the rotating member 3 further includes: a radial bearing, the inner ring of the radial bearing is connected and fixed to the rotating shaft 2, and the outer ring of the radial bearing is connected and fixed to the adapter 31. The structure is simple, which is convenient for realizing the design purpose of relative rotation between the first end 41 and the rotating shaft 2, and the production cost is low.

[0064] Reference Figure 1 According to some optional embodiments of the utility model, the rotating member 3 also includes: a thrust bearing, there are two thrust bearings, one of the two thrust bearings is arranged between the adapter seat 31 and the moving seat 12, the thrust bearing arranged between the adapter seat 31 and the moving seat 12 is a first bearing 34, and the other of the two thrust bearings is arranged between the adapter seat 31 and the axial limit cover 5, and the thrust bearing arranged between the adapter seat 31 and the axial limit cover 5 is a second bearing 35.

[0065] That is, the axial limit cover 5 can move toward the moving seat 12 and cooperate with the moving seat 12 to press the adapter seat 31, the first bearing 34, and the second bearing 35, thereby reducing the gap between the moving seat 12 and the first bearing 34 in the first direction, reducing the gap between the first bearing 34 and the adapter seat 31 in the first direction, reducing the gap between the adapter seat 31 and the second bearing 35 in the first direction, and reducing the gap between the second bearing 35 and the axial limit cover 5 in the first direction, thereby effectively reducing the probability of dust and liquid flowing from the adapter seat 31 to the parallel platform body 1, and having a better dust and liquid proof effect on the parallel platform body 1.

[0066] Reference Figure 1 , Figure 4-Figure 6 In some optional embodiments of the utility model, the adapter seat 31 includes: an adapter body 311 and an adapter ring 312. The adapter body 311 is provided with an adapter cavity. The thrust bearing arranged between the adapter seat 31 and the moving seat 12 is a first bearing 34. The first bearing 34 is passed through the adapter cavity. The adapter ring 312 is connected to the outer peripheral side of the adapter body 311. The adapter ring 312 is connected to one end of the opening of the adapter body 311. The first pressure ring 32 is connected to the adapter ring 312. The first connecting flange 43 is clamped between the first pressure ring 32 and the adapter ring 312.

[0067] In this way, the size of the first pressure ring 32 protruding from the surface of the adapter body 311 away from the moving seat 12 is reduced, or the first pressure ring 32 does not protrude from the surface of the adapter body 311 away from the moving seat 12, so that the size occupied by the adapter seat 31 and the first bearing 34 in the first direction is smaller, the size occupied by the rotating part 3 in the first direction is smaller, the size of the rotating shaft 2 in the first direction can be set smaller, the size occupied by the parallel platform device 100 in the first direction is smaller, and the parallel platform device 100 is more compact.

[0068] Reference Figure 1 , Figure 4 and Figure 7 In some optional embodiments of the utility model, the protective cover 4 includes a telescopic portion 45, a closing portion 46 and a first connecting flange 43, the telescopic portion 45 is telescopic along a first direction, the closing portion 46 is connected to an end of the telescopic portion 45 away from the fixed seat 11, the outer diameter of the closing portion 46 is smaller than the outer diameter of the telescopic portion 45, and the first connecting flange 43 is connected to an end of the closing portion 46 away from the telescopic portion 45; the rotating member 3 also includes: a cover 36, the cover 36 has a shielding cavity opening toward the moving seat 12, the cover 36 is sleeved on the outer peripheral side of the rotating shaft 2, and the closing portion 46 is penetrated into the shielding cavity.

[0069] In this way, the cover 36 can shield the adapter body 311, the first pressure ring 32, the first bearing 34 and the first end 41 of the protective cover 4, effectively reducing the probability of dust and liquid flowing from the rotating part 3 to the parallel platform body 1, and achieving a better dust and liquid proof effect on the parallel platform body 1.

[0070] Reference Figure 1 , Figure 6 and Figure 8 In some optional embodiments of the present invention, the portion of the cover 36 opposite to the adapter body 311 is recessed toward the shielding cavity to form an escape groove 361, and the bottom wall of the escape groove 361 opposite to its opening is connected to the adapter body 311. For example, the cover 36 and the adapter body 311 can be connected by fasteners. The thrust bearing disposed between the adapter seat 31 and the axial limit cover 5 is the second bearing 35, and the second bearing 35 is disposed in the escape groove 361. A portion of the axial limit cover 5 is passed through the escape groove 361, and the axial limit cover 5 is abutted against the second bearing 35.

[0071] In this way, the axial limit cover 5 can shield the connection point between the cover cover 36 and the adapter body 311, preventing dust and liquid from flowing from the connection point between the cover cover 36 and the adapter body 311 to the parallel platform body 1, thereby achieving a better dust and liquid proof effect on the parallel platform body 1.

[0072] Reference Figure 1 and Figure 8In some optional embodiments of the present invention, the opening end of the avoidance groove 361 is provided with a boss groove, and the surface opposite to the boss groove and its opening is a boss surface, and the axial limit cover 5 abuts against the boss surface. In this way, a labyrinth seal can be formed between the axial limit cover 5 and the cover 36, thereby effectively preventing dust and liquid from flowing from the gap between the cover 36 and the axial limit cover 5 to the parallel platform body 1, achieving a better dust and liquid-proof effect on the parallel platform body 1, improving the reliability of the parallel platform body 1, and improving the reliability of the parallel platform device 100.

[0073] In the description of the present utility model, it is to be understood that relational terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0074] 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", "axial", "radial", "circumferential" and the like 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 referred device or element 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.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means 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 utility model. In this specification, the schematic representation of the above terms does not necessarily refer 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.

[0076] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A parallel platform device, characterized in that: include: The parallel platform body comprises: a fixed seat, a moving seat and a parallel drive assembly, wherein the fixed seat and the moving seat are arranged at intervals along a first direction, the parallel drive assembly is connected between the fixed seat and the moving seat, and the parallel drive assembly drives the moving seat to rotate relative to the fixed seat; A rotating shaft extending along the first direction and connected to a side surface of the moving seat facing away from the fixed seat; A rotating member, which is sleeved on the outer peripheral side of the rotating shaft and can rotate along the central axis of the rotating shaft; A protective cover is sleeved on the outer peripheral side of the parallel platform body, the end of the protective cover close to the moving seat is the first end, the first end is connected to the rotating member, the end of the protective cover away from the moving seat is the second end, and the second end is connected to the fixed seat.

2. The parallel platform device according to claim 1, characterized in that: Also includes: An axial limit cover is connected to the rotating shaft and is located at an end of the rotating member away from the moving seat.

3. The parallel platform device according to claim 2, characterized in that: The first end has a first inward connecting flange, and the rotating member includes: an adapter seat and a first pressure ring. The adapter seat is sleeved on the outer peripheral side of the rotating shaft, and the adapter seat is rotatable along the central axis of the rotating shaft. The adapter seat and the first pressure ring are respectively arranged on both sides of the first connecting flange in the first direction, and the adapter seat is connected to the first pressure ring to clamp the first connecting flange.

4. The parallel platform device according to claim 3, characterized in that: A limiting hole is provided on one of the adapter seat and the moving seat, and a limiting column is connected to the other one. The limiting column is passed through the limiting hole. The limiting hole extends in an arc shape. The center of the extended arc of the limiting hole is located on the central axis of the rotating shaft. The length of the inner arc of the limiting hole is greater than the diameter of the limiting column.

5. The parallel platform device according to claim 4, characterized in that: The center angle corresponding to the extended arc of the limiting hole is the limiting center angle, and the limiting center angle is greater than or equal to 10° and less than or equal to 60°.

6. The parallel platform device according to any one of claims 3 to 5, characterized in that: The rotating member further comprises a radial bearing, wherein the inner ring of the radial bearing is connected and fixed to the rotating shaft, and the outer ring of the radial bearing is connected and fixed to the adapter seat.

7. The parallel platform device according to any one of claims 3 to 5, characterized in that: The rotating member further includes: a thrust bearing, wherein there are two thrust bearings, one of the two thrust bearings is arranged between the adapter seat and the moving seat, and the other is arranged between the adapter seat and the axial limiting cover.

8. The parallel platform device according to claim 7, characterized in that: The adapter seat includes: an adapter body and an adapter ring, the adapter body is provided with an adapter cavity, the thrust bearing arranged between the adapter seat and the moving seat is a first bearing, the first bearing is passed through the adapter cavity, the adapter ring is connected to the outer peripheral side of the adapter body, the adapter ring is connected to one end of the opening of the adapter body, the first pressure ring is connected to the adapter ring, and the first connecting flange is clamped between the first pressure ring and the adapter ring.

9. The parallel platform device according to claim 8, characterized in that: The protective cover comprises a telescopic portion, a closing portion and a first connecting flange, the telescopic portion is telescopic along the first direction, the closing portion is connected to an end of the telescopic portion away from the fixing seat, the outer diameter of the closing portion is smaller than the outer diameter of the telescopic portion, and the first connecting flange is connected to an end of the closing portion away from the telescopic portion; The rotating member also includes: a cover, which has a shielding cavity opening toward the moving seat, the cover is sleeved on the outer peripheral side of the rotating shaft, and the closing portion is penetrated into the shielding cavity; the portion of the cover opposite to the adapter body is recessed toward the shielding cavity to form an avoidance groove, and the bottom wall of the avoidance groove opposite to its opening is connected to the adapter body, and the thrust bearing arranged between the adapter seat and the axial limit cover is a second bearing, the second bearing is arranged in the avoidance groove, and a portion of the axial limit cover is penetrated in the avoidance groove and stops against the second bearing.

10. The parallel platform device according to claim 9, characterized in that: The opening end of the avoidance groove is provided with a boss groove, and the surface opposite to the boss groove and its opening is a boss surface, and the axial limiting cover abuts against the boss surface.

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