Rotary machine limiting mechanism and mechanical device

Abstract

The utility model provides a kind of rotary machinery limiting mechanism and mechanical equipment, limiting mechanism includes: limiting main body piece, is equipped with installation slot, first limiting part and second limiting part, first limiting part and second limiting part annular and mutually interval setting;Outer limiting ring, is equipped with first protruding part;Inner limiting ring, is equipped in the center of outer limiting ring, and inner limiting ring is equipped with second protruding part;Wherein, inner limiting ring and outer limiting ring are respectively rotationally installed in installation slot, and inner limiting ring and outer limiting ring concentrically setting, drive inner limiting ring rotation, so that second protruding part and first protruding part contact, to drive outer limiting ring synchronous rotation, until first protruding part and first limiting part contact, after inner limiting ring reverse rotation, so that second protruding part again and first protruding part contact, to drive outer limiting ring synchronous reverse rotation, until first protruding part and second limiting part contact.The utility model structure is simple, low in cost, and high reliability.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology, specifically relating to a rotary machinery limiting mechanism and mechanical equipment. Background Technology

[0002] Rotating machinery is widely used in various industrial applications, and its proper operation is crucial for the smooth operation of production processes. However, during operation, especially when sensors or control programs malfunction, rotating machinery is prone to over-rotation. For example, in some equipment requiring precise control of rotation angles, without effective limiting measures, mechanical components may rotate without restraint. This unrestricted rotation can cause internal pipelines to be severed, leading to serious equipment damage and potentially endangering the safety of operators, resulting in significant economic losses for the company.

[0003] While some limit devices exist in related technologies, most have certain limitations. In particular, some limit devices have complex structures, cumbersome installation and debugging processes, and high manufacturing costs. Utility Model Content

[0004] In view of this, the present invention provides a rotary mechanical limiting mechanism to solve the problems existing in the prior art.

[0005] On one hand, this utility model provides a rotary mechanical limiting mechanism, including: a limiting main body, having an installation groove, a first limiting part and a second limiting part, the first limiting part and the second limiting part being circumferentially arranged and spaced apart from each other; an outer limiting ring, having a first protrusion; an inner limiting ring, located at the center of the outer limiting ring, the inner limiting ring having a second protrusion; wherein, the inner limiting ring and the outer limiting ring are respectively rotatably installed in the installation groove, and the inner limiting ring and the outer limiting ring are concentrically arranged, driving the inner limiting ring to rotate, so that the second protrusion contacts the first protrusion, thereby driving the outer limiting ring to rotate synchronously until the first protrusion contacts the first limiting part, and after the inner limiting ring rotates in the opposite direction, the second protrusion contacts the first protrusion again, thereby driving the outer limiting ring to rotate synchronously in the opposite direction until the first protrusion contacts the second limiting part.

[0006] In one optional embodiment, the mounting groove is cylindrical, and a limiting groove protrudes outward from the mounting groove. The limiting groove is connected to the mounting groove, and a first limiting part and a second limiting part are formed on the two side walls of the limiting groove in the circumferential direction, respectively.

[0007] In one optional embodiment, the limiting groove is arranged in an arc shape, and the limiting groove and the mounting groove are concentric.

[0008] In one optional embodiment, the included angle between the first limiting portion and the second limiting portion satisfies the requirement that the inner limiting ring rotates within its working range.

[0009] In one alternative embodiment, the first protrusion is integrally formed with the outer limiting ring.

[0010] In one alternative embodiment, the inner ring of the outer limiting ring protrudes inward to form an inner protrusion, the inner protrusion being adapted to abut against the second protrusion, and the outer ring of the outer limiting ring protrudes outward to form an outer protrusion, the outer protrusion being adapted to abut against the first limiting portion or the second limiting portion.

[0011] In one alternative embodiment, the outer ring of the inner limiting ring protrudes outward to form the second protrusion.

[0012] In one optional embodiment, the inner limiting ring is provided with a plurality of connecting holes, which are circumferentially and evenly distributed on the periphery of the inner limiting ring for fasteners to pass through and connect with the rotating shaft. The limiting body is provided with a shaft hole for the rotating shaft to pass through.

[0013] In one optional embodiment, the rotary mechanical limiting mechanism further includes an upper pressure cover and a lower pressure cover, wherein the limiting main body is disposed between the upper pressure cover and the lower pressure cover, and the upper pressure cover, the limiting main body and the lower pressure cover are connected by fasteners.

[0014] This utility model also proposes a mechanical device, including any of the rotary mechanical limiting mechanisms described in any one of the claims.

[0015] The beneficial effects of this utility model are as follows: by driving the outer limiting ring to abut against the first or second limiting part through the rotation of the inner limiting ring, the limiting mechanism of this rotating machinery can effectively limit the forward and reverse rotation angles of the rotating machinery, ensuring that it works within a safe range. It has the beneficial technical effects of simple structure, low cost and high reliability, and can effectively solve the problems existing in the prior art, providing a reliable guarantee for the safe operation of rotating machinery. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0017] Figure 1 This is a structural schematic diagram of the 0-degree limiting state of the rotary mechanical limiting mechanism according to an embodiment of the present invention;

[0018] Figure 2 This is a structural schematic diagram of the 440-degree limiting state of the rotary mechanical limiting mechanism according to an embodiment of the present invention.

[0019] Figure 3 This is a top view of the limiting main body of a rotary mechanical limiting mechanism according to an embodiment of the present invention.

[0020] Figure 4 This is a top view of the outer limiting ring of a rotary mechanical limiting mechanism according to an embodiment of the present invention.

[0021] Figure 5 This is a top view of the inner limiting ring of a rotary mechanical limiting mechanism according to an embodiment of the present invention.

[0022] Figure 6 This is a top view of the upper pressure cover of a rotary mechanical limiting mechanism according to an embodiment of the present invention.

[0023] Figure 7 This is a side view of a rotating mechanical limiting mechanism according to an embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 110. Limiting main body component; 1101. Mounting groove; 1102. First limiting part; 1103. Second limiting part; 1104. Limiting groove; 120. Outer limiting ring; 121. First protrusion; 1211. Inner protrusion; 1212. Outer protrusion; 130. Inner limiting ring; 131. Second protrusion; 132. Connecting hole; 140. Upper pressure cover; 150. Lower pressure cover. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In some devices that require precise control of rotation angles, mechanical parts may rotate indefinitely without effective limiting measures. For example, one device's normal operating range is from 35 degrees to 405 degrees, then back to 35 degrees, and so on. However, if the sensor or control program malfunctions, the device may rotate indefinitely to 440 degrees or even further in the forward direction; or in the reverse direction, it may rotate indefinitely to 0 degrees, or even continue rotating in the opposite direction.

[0030] While some limit devices exist on the market, their high cost makes them unaffordable for many small and medium-sized enterprises. Others suffer from insufficient reliability, high failure rates, and inability to operate stably in harsh working environments. Still others involve cumbersome installation and commissioning processes, requiring significant time and manpower, thus increasing equipment maintenance costs. Furthermore, these limit devices are often only applicable to specific equipment or shaft diameters, lacking versatility and failing to meet the needs of different equipment and operating conditions.

[0031] Therefore, developing a simple, low-cost, highly reliable, versatile, and easy-to-install and debug rotating machinery limit mechanism is of great significance for ensuring the safe operation of rotating machinery, reducing equipment failure rate, improving production efficiency, and ensuring personnel safety.

[0032] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0033] The following is combined with Figures 1 to 7The following describes embodiments of the present invention.

[0034] like Figure 1 and Figure 2 As shown, according to an embodiment of the utility model, a rotary mechanical limiting mechanism is provided, comprising: a limiting main body 110, having a mounting groove 1101, a first limiting part 1102 and a second limiting part 1103, the first limiting part 1102 and the second limiting part 1103 being circumferentially arranged and spaced apart from each other; an outer limiting ring 120, having a first protrusion 121; and an inner limiting ring 130, located at the center of the outer limiting ring 120, having a second protrusion 131; wherein the inner limiting ring 130 and the outer limiting ring 120... The inner and outer limiting rings 130 and 120 are respectively rotatably installed in the mounting groove 1101, and the inner limiting ring 130 and the outer limiting ring 120 are concentrically arranged. The inner limiting ring 130 is driven to rotate, so that the second protrusion 131 contacts the first protrusion, thereby driving the outer limiting ring 120 to rotate synchronously until the first protrusion contacts the first limiting part 1102. After the inner limiting ring 130 rotates in the opposite direction, the second protrusion 131 contacts the first protrusion again, thereby driving the outer limiting ring 120 to rotate synchronously in the opposite direction until the first protrusion contacts the second limiting part 1103.

[0035] In this embodiment, the first limiting part 1102 and the second limiting part 1103 are arranged circumferentially and spaced apart from each other, respectively used to limit the forward and reverse extreme positions of the rotating machinery. The structural design of the limiting main body 110 allows it to be firmly installed in the corresponding positions of the rotating machinery and provides support and positioning for other components. The first protrusion 121 of the outer limiting ring 120 can contact the first limiting part 1102 or the second limiting part 1103 of the limiting main body 110 during rotation, thereby realizing the limiting function. The inner limiting ring 130 is concentrically arranged with the outer limiting ring 120 and can rotate relative to the outer limiting ring 120. The rotation of the inner limiting ring 130 is realized by an external driving device, such as a motor or a manual operating mechanism.

[0036] The working principle is as follows:

[0037] Forward rotation limit:

[0038] When the rotating machinery begins to rotate forward, the inner limiting ring 130 is driven by the drive device to rotate in a predetermined direction. As the inner limiting ring 130 rotates, its second protrusion 131 gradually approaches the first protrusion 121 on the outer limiting ring 120. When the second protrusion 131 contacts the first protrusion 121, the rotation of the inner limiting ring 130 is transmitted to the outer limiting ring 120 through the first protrusion 121, thereby driving the outer limiting ring 120 to rotate synchronously. Since the outer limiting ring 120 cooperates with the first limiting part 1102 and the second limiting part 1103 of the limiting body 110, when the first protrusion 121 of the outer limiting ring 120 contacts the first limiting part 1102 of the limiting body 110, the forward rotation of the rotating machinery is stopped. At this time, the forward rotation angle of the rotating machinery is limited to a safe range, for example, 440 degrees.

[0039] Reverse limit:

[0040] When the rotating machinery begins to reverse, the inner limiting ring 130 rotates in the opposite direction, and its second protrusion 131 contacts the first protrusion 121 on the outer limiting ring 120 again. The reverse rotation of the inner limiting ring 130 drives the outer limiting ring 120 to rotate synchronously in the opposite direction. When the first protrusion 121 of the outer limiting ring 120 contacts the second limiting portion 1103 of the limiting body 110, the reverse rotation of the rotating machinery is stopped. At this time, the reverse rotation angle of the rotating machinery is limited to a safe range, such as 440 degrees.

[0041] This rotating machinery limit mechanism can effectively limit the forward and reverse rotation angles of rotating machinery, ensuring its operation within a safe range. Simultaneously, this mechanism has the following technical advantages:

[0042] Simple structure: The design is simple, with few parts, making it easy to manufacture and maintain.

[0043] Low cost: Manufactured using common materials and processes, reducing production costs.

[0044] High reliability: By using mechanical limiting, the reliance on electronic components is reduced, thus improving the reliability of the system.

[0045] High versatility: Applicable to a variety of equipment and shaft diameters, with wide applicability.

[0046] Easy installation and debugging: The design takes into account the convenience of on-site installation and debugging, reducing installation time and labor costs.

[0047] In summary, this rotating machinery limit mechanism can effectively solve the problems existing in the prior art and provide a reliable guarantee for the safe operation of rotating machinery.

[0048] Furthermore, such as Figure 3As shown, the mounting groove 1101 is cylindrical, and a limiting groove 1104 protrudes outward from the mounting groove 1101. The limiting groove 1104 is connected to the mounting groove 1101, and a first limiting part 1102 and a second limiting part 1103 are formed on the two side walls of the limiting groove 1104 in the circumferential direction, respectively.

[0049] The mounting groove 1101 is cylindrical in shape and is used to accommodate and support the outer limiting ring 120 and the inner limiting ring 130. It not only provides a stable mounting base for the outer limiting ring 120 and the inner limiting ring, but also ensures the concentricity and accuracy of the limiting rings during rotation. The limiting groove 1104 has a first limiting portion 1102 and a second limiting portion 1103 formed on its two side walls facing upwards, respectively, enabling forward and reverse rotation limiting of the rotating machinery. The first limiting portion 1102 is located on one side of the limiting groove 1104 and is used to limit the forward rotation limit position of the rotating machinery. When the first protrusion 121 of the outer limiting ring 120 contacts the first limiting portion 1102, the forward rotation of the rotating machinery is stopped, thereby ensuring that it will not exceed a predetermined forward rotation angle, such as 440 degrees. The second limiting portion 1103 is located on the other side of the limiting groove 1104 and is used to limit the reverse rotation limit position of the rotating machinery. When the first protrusion 121 of the outer limit ring 120 contacts the second limit portion 1103, the reverse rotation of the rotating machinery is prevented, thereby ensuring that it will not exceed the predetermined reverse angle. The limit groove 1104 can ensure that the first protrusion 121 of the outer limit ring 120 can slide smoothly in the groove, and can quickly stop the rotation when it contacts the limit portion.

[0050] Furthermore, the limiting groove 1104 is arc-shaped, and the limiting groove 1104 and the mounting groove 1101 are concentric.

[0051] The design of the arc-shaped limiting groove 1104 perfectly matches the motion trajectory of the rotating machinery. Since the rotation of the rotating machinery revolves around a central axis, the arc-shaped limiting groove 1104 ensures that the limiting action remains consistent and precise throughout the rotation process. This allows the limiting groove 1104 to guide the first protrusion 121 of the outer limiting ring 120 to slide on it in the most natural way, thereby reducing friction and wear and extending the service life of the limiting mechanism.

[0052] The concentric arrangement of the limiting groove 1104 and the mounting groove 1101 ensures that the center of the limiting groove 1104 is perfectly aligned with the rotation center of the rotating machinery, allowing the limiting groove 1104 to perfectly align with the movement trajectory of the rotating machinery, thereby guaranteeing the accuracy and stability of the limiting action. This concentric arrangement also reduces vibration and sway caused by eccentricity, improving the reliability of the limiting mechanism under high-speed rotation conditions. The concentric arrangement of the limiting groove 1104 and the mounting groove 1101 also ensures the precision and reliability of the limiting action. During rotation, the first protrusion 121 of the outer limiting ring 120 always slides along the arc-shaped limiting groove 1104. When it contacts the first limiting part 1102 or the second limiting part 1103, it can quickly and accurately stop the rotation, effectively preventing the rotating machinery from exceeding the predetermined angle range.

[0053] Furthermore, the included angle between the first limiting part 1102 and the second limiting part 1103 satisfies the requirement that the inner limiting ring 130 rotates within its working range.

[0054] Understandably, in the application scenarios of rotating machinery, the working range refers to the range of rotational angles allowed for the mechanical device during normal operation. For example, suppose a rotating machine needs to rotate clockwise from a 35-degree position to a 405-degree position, and then reverse back to a 35-degree position, repeating the clockwise and reverse rotation. Its working range is the clockwise rotation from 35 degrees to 405 degrees, and the reverse rotation from 405 degrees to 35 degrees. Therefore, in this rotating machinery limiting mechanism, the included angle between the first limiting part 1102 and the second limiting part 1103 ensures the normal operation of the limiting function, directly affecting the free rotation of the inner limiting ring 130 within the working range, and its accurate limiting at extreme positions.

[0055] Forward rotation limit position: Assume that the limit position of forward rotation is 440 degrees (positive limit), and the limit position of reverse rotation is 0 degrees (reverse limit).

[0056] Working range: from 35 degrees clockwise to 405 degrees, and then from 405 degrees counterclockwise to 35 degrees.

[0057] Angle calculation:

[0058] Forward rotation: from 35 degrees to 405 degrees, the included angle is 405° - 35° = 370°.

[0059] Reversal process: Reversing from 405 degrees to 35 degrees, the included angle is 360° - (405° - 35°) = 370°.

[0060] Therefore, the total working range of the inner limit ring 130 is 370. ° +370 ° =740 ° .

[0061] The included angle between the first limiting part 1102 and the second limiting part 1103 must be greater than or equal to the included angle of the total working range of the inner limiting ring 130, that is, at least 740 degrees. This ensures that the inner limiting ring 130 can rotate freely within its working range during forward and reverse rotation without being prematurely blocked by the limiting parts. At the same time, when the inner limiting ring 130 reaches the forward rotation limit position (440 degrees) or the reverse rotation limit position (0 degrees), the first limiting part 1102 or the second limiting part 1103 can accurately contact the first protrusion 121 of the outer limiting ring 120, thereby realizing the limiting function.

[0062] When the inner limiting ring 130 reaches its limit position, the first limiting part 1102 or the second limiting part 1103 can accurately contact the first protrusion 121 of the outer limiting ring 120, thereby achieving a precise limiting function. By adjusting the included angle between the first limiting part 1102 and the second limiting part 1103, this limiting mechanism can adapt to the working range requirements of different equipment. This flexibility makes the limiting mechanism widely applicable and suitable for various rotating machinery. The reasonable included angle design reduces friction and collision between mechanical parts, improving the durability and reliability of the limiting mechanism.

[0063] Furthermore, the first protrusion 121 is integrally formed with the outer limiting ring 120. The first protrusion has an arcuate surface that mates with the limiting groove 1104 and the inner limiting ring 130. Understandably, the inner limiting ring 130 and the outer limiting ring 120 are uniformly circular.

[0064] The first protrusion 121 and the outer limiting ring 120 are integrally formed to form an inseparable whole, which can ensure the structural connection strength between the first protrusion 121 and the outer limiting ring 120 and avoid loosening or breakage problems that may be caused by welding, riveting or other connection methods.

[0065] Furthermore, such as Figure 4 As shown, the inner ring of the outer limiting ring 120 protrudes inward to form an inner protrusion 1211, which is adapted to abut against the second protrusion 131. The outer ring of the outer limiting ring 120 protrudes outward to form an outer protrusion 1212, which is adapted to abut against the first limiting portion 1102 or the second limiting portion 1103.

[0066] In this embodiment, the inner ring of the outer limiting ring 120 protrudes inward to form an inner convex portion 1211, which is adapted to abut against the second convex portion 131. The outer ring of the outer limiting ring 120 protrudes outward to form an outer convex portion 1212, which is adapted to abut against the first limiting portion 1102 or the second limiting portion 1103. The inner portion has an arcuate surface that mates with the inner limiting ring 130, and the outer convex portion 1212 has an arcuate surface that mates with the limiting groove 1104. The design of the inner convex portion 1211 and the outer convex portion 1212 of the outer limiting ring 120 not only enables precise motion transmission and limiting control, but also has the advantages of high structural strength, high reliability, and strong adaptability. It can provide reliable protection for the safe operation of industrial equipment, and is particularly suitable for rotating machinery applications requiring high precision, high reliability, and long service life.

[0067] Furthermore, such as Figure 5 As shown, the outer ring of the inner limiting ring 130 protrudes outward to form a second protrusion 131. The second protrusion 131 spatially corresponds to the inner protrusion 1211 of the outer limiting ring 120, enabling effective contact and force transmission between them. When the inner limiting ring 130 is driven to rotate, the second protrusion 131, through contact with the inner protrusion 1211, transmits motion to the outer limiting ring 120, thereby achieving synchronous rotation of the outer limiting ring 120. When the outer protrusion 1212 of the outer limiting ring 120 contacts the limiting portion, the second protrusion 131 can quickly transmit force to the inner limiting ring 130, thus achieving precise limiting control of the rotating machinery. The second protrusion 131 and the inner limiting ring 130 are integrally formed, improving the structural integrity and strength and reducing the risk of damage caused by external forces.

[0068] Specifically, continue to combine Figure 5 As shown, the inner limiting ring 130 is provided with multiple connecting holes 132. The multiple connecting holes 132 are circumferential and evenly distributed on the periphery of the inner limiting ring 130 to allow fasteners to pass through and connect with the rotating shaft. The limiting body is provided with a shaft hole for the rotating shaft to pass through.

[0069] In this embodiment, four connecting holes 132 can be provided, all of which are countersunk holes. The connecting holes 132 are circumferentially and evenly distributed, which can ensure that the installation force of the inner limiting ring 130 on the rotating shaft is evenly distributed, avoiding deformation or loosening caused by uneven local force.

[0070] The connection hole 132 of the inner limit ring 130 and the shaft hole of the limit body not only enable stable connection and precise limit control, but also offer advantages such as easy installation and maintenance, high durability, and strong adaptability. It provides reliable assurance for the safe operation of industrial equipment and is particularly suitable for rotating machinery applications requiring high precision, high reliability, and long service life.

[0071] Furthermore, such as Figure 6 and Figure 7As shown, a rotary machinery limiting mechanism further includes an upper pressure cover 140 and a lower pressure cover 150. The limiting main body 110 is disposed between the upper pressure cover 140 and the lower pressure cover 150, and is connected to the upper pressure cover 140, the limiting main body 110 and the lower pressure cover 150 by fasteners.

[0072] In this embodiment, the upper pressure cover 140 and the lower pressure cover 150 are located on the upper and lower sides of the limiting main body 110, respectively, similar to a "sandwich" structure. The limiting main body 110 is sandwiched between the upper and lower pressure covers 150, thereby forming a compact and stable whole.

[0073] The main function of the upper and lower pressure covers 150 is to protect the limiting main body 110 and its internal components such as the limiting ring. This prevents external dust, impurities, and liquids from entering the limiting mechanism, thereby reducing mechanical failures and wear caused by contamination. The upper and lower pressure covers 150 provide stable support for the limiting main body 110, ensuring that the limiting mechanism maintains good concentricity and stability during operation, effectively reducing loosening or damage to components caused by vibration or external forces.

[0074] The assembly process of the limiting mechanism is simplified by the upper and lower pressure covers 150. All components can be first installed on the limiting main body 110 and then fixed by the upper and lower pressure covers 150 to form a complete limiting mechanism.

[0075] During assembly, the limiting main body 110 is first placed in the appropriate position, and then the inner limiting ring 130 and the outer limiting ring 120 are installed into the mounting groove 1101 of the limiting main body 110. Next, the lower pressure cover 150 is placed below the limiting main body 110, ensuring it fits tightly against the bottom of the limiting main body 110. Then, the upper pressure cover 140 is placed above the limiting main body 110, ensuring it fits tightly against the top of the limiting main body 110. Finally, the upper pressure cover 140, the limiting main body 110, and the lower pressure cover 150 are connected using fasteners such as bolts and screws. After installation, the entire limiting mechanism forms a compact and stable whole, capable of withstanding various forces and torques generated during the operation of rotating machinery.

[0076] This utility model also proposes a mechanical device, including any of the rotary mechanical limiting mechanisms described above.

[0077] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation.

[0078] For those skilled in the art, various variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom remain within the protection scope of this invention.

Claims

1. A rotary mechanical limiting mechanism, characterized in that, include: The limiting main body is provided with an installation groove, a first limiting part and a second limiting part, wherein the first limiting part and the second limiting part are arranged circumferentially and spaced apart from each other; The outer limiting ring is provided with a first protrusion; An inner limiting ring is located at the center of the outer limiting ring, and the inner limiting ring is provided with a second protrusion; The inner limiting ring and the outer limiting ring are rotatably installed in the mounting groove, and the inner limiting ring and the outer limiting ring are concentrically arranged. The inner limiting ring is driven to rotate, so that the second protrusion contacts the first protrusion, thereby driving the outer limiting ring to rotate synchronously until the first protrusion contacts the first limiting part. After the inner limiting ring rotates in the opposite direction, the second protrusion contacts the first protrusion again, thereby driving the outer limiting ring to rotate synchronously in the opposite direction until the first protrusion contacts the second limiting part.

2. The rotary mechanical limiting mechanism according to claim 1, characterized in that, The mounting groove is cylindrical, and a limiting groove protrudes outward from the mounting groove. The limiting groove is connected to the mounting groove, and the first limiting part and the second limiting part are formed on the two side walls of the limiting groove in the circumferential direction, respectively.

3. The rotary mechanical limiting mechanism according to claim 2, characterized in that, The limiting groove is arc-shaped, and the limiting groove and the mounting groove are concentric.

4. The rotary mechanical limiting mechanism according to claim 1, characterized in that, The included angle between the first limiting part and the second limiting part satisfies the requirement that the inner limiting ring rotates within its working range.

5. The rotary mechanical limiting mechanism according to any one of claims 1 to 4, characterized in that, The first protrusion is integrally formed with the outer limiting ring.

6. The rotary mechanical limiting mechanism according to claim 5, characterized in that, The inner ring of the outer limiting ring protrudes inward to form an inner convex portion, which is adapted to abut against the second convex portion. The outer ring of the outer limiting ring protrudes outward to form an outer convex portion, which is adapted to abut against the first limiting portion or the second limiting portion.

7. The rotary mechanical limiting mechanism according to any one of claims 1 to 4, characterized in that, The outer ring of the inner limiting ring protrudes outward to form the second protrusion.

8. The rotary mechanical limiting mechanism according to any one of claims 1 to 4, characterized in that, The inner limiting ring is provided with multiple connecting holes, which are circumferentially and evenly distributed on the periphery of the inner limiting ring, for fasteners to be inserted and connected to the rotating shaft. The limiting body is provided with a shaft hole for the rotating shaft to pass through.

9. The rotary mechanical limiting mechanism according to any one of claims 1 to 4, characterized in that, It also includes an upper pressure cover and a lower pressure cover, the limiting body is disposed between the upper pressure cover and the lower pressure cover, and the upper pressure cover, the limiting body and the lower pressure cover are connected by fasteners.

10. A mechanical device, characterized in that, Includes the rotary mechanical limiting mechanism as described in any one of claims 1 to 9.

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