A slewing mechanism direction angle interval recognition and limit sensing device

Abstract

The present application relates to a device for identifying angular ranges and sensing limits for a rotary mechanism, comprising: a bearing comprising an inner ring and an outer ring rotatably connected to the inner ring; an end plate fixed to the outer ring and equipped with a photoelectric sensor assembly; a circular ring fixed to the bottom end face of the inner ring, the photoelectric sensor assembly located within the circular ring, the inner sidewall of the circular ring being provided with an arc-shaped sensing segment; the outer ring being capable of driving the photoelectric sensor assembly to rotate and sweep across the path of the arc-shaped sensing segment, enabling the photoelectric sensor assembly to sense and identify the outer ring's rotation range. This avoids the problem of mechanical contact sensing occupying a large layout space and requiring high assembly precision. The modular design of the photoelectric sensor assembly offers strong compatibility and can effectively reduce the space required for the device. The use of a photoelectric switch as a signal feedback terminal enables identification of angular ranges and limit sensing for the rotary machine.

Description

Technical Field

[0001] The present application relates to the fields of mechanical engineering and automation control, and in particular to a slewing mechanism direction angle interval identification and limit sensing device. Background Art

[0002] Slewing mechanism angular range identification and limit sensing are crucial components of the operation of excavators, cranes, fire-fighting aerial platforms, and other equipment. Certain pitching angle intervals in these vehicles must be executed within specific directional angle intervals, necessitating angular range identification. The slewing mechanism's rotational motion requires directional limit limits, necessitating directional limit position sensing. Both angular range identification and limit sensing must be fast and accurate.

[0003] In related technologies, the traditional rotary mechanism direction angle range identification and limit sensing device is a mechanical contact sensing device. During the rotation process, the ball head mechanical switch contacts the direction identification arc plate and feeds back the corresponding signal. Mechanical contact sensing will occupy a large layout space and has high requirements for assembly accuracy. Summary of the Invention

[0004] This application provides a device for identifying and limiting the angular range of a rotary mechanism, avoiding the large layout space occupied by mechanical contact sensors and the high assembly precision requirements. The modular design of the photoelectric sensor assembly offers strong compatibility, effectively reducing the device's footprint and improving the device's assembly precision requirements. Using a photoelectric switch as the signal feedback terminal, it enables angular range identification and limit sensing for the rotary machine.

[0005] The embodiment of the present application provides a slewing mechanism direction angle interval recognition and limit sensing device, which includes:

[0006] A bearing comprising an inner ring and an outer ring rotatably connected to the inner ring;

[0007] an end plate, the end plate being fixed to the outer ring and having a photoelectric sensor assembly installed thereon;

[0008] A circular ring, the circular ring being fixed to the bottom end surface of the inner ring, the photoelectric sensor assembly being located inside the circular ring, and an arc-shaped sensing segment being provided on the inner sidewall of the circular ring;

[0009] The outer ring can drive the photoelectric sensor assembly to rotate and sweep across the path of the arc-shaped sensing segment, so that the photoelectric sensor assembly can sense and identify the rotation angle of the outer ring.

[0010] In one embodiment, the slewing mechanism direction angle interval recognition and limit sensing device includes:

[0011] a connecting rod, one end of which is fixed to the end plate and the other end of which is located in the circular ring;

[0012] An adjusting block, wherein the adjusting block is provided with a strip-shaped hole, and the adjusting block is fixed to the other end of the connecting rod by bolts through the strip-shaped hole;

[0013] The photoelectric sensor assembly is installed on the adjustment block.

[0014] In one embodiment, the adjustment block is threadedly connected to an adjustment screw, and the photoelectric sensor assembly is mounted on the adjustment screw.

[0015] In one embodiment, the photoelectric sensor assembly includes:

[0016] a first photoelectric switch, the first photoelectric switch being fixed to the end plate and located within the circular ring;

[0017] The arc-shaped sensing segment comprises:

[0018] a first arc-shaped plate, the first arc-shaped plate being fixed to the inner side of the circular ring, the first arc-shaped plate being provided with a first arc-shaped sensing protrusion section, the first arc-shaped sensing protrusion section having a first starting end and a first ending end;

[0019] When the first photoelectric switch rotates from the first starting end to the first end, the first photoelectric switch recognizes that the rotation angle range of the outer ring is [-a, a], where a is a positive number.

[0020] In one embodiment, the first arc-shaped sensing protrusion section includes a fixed section and a telescopic section, a sliding groove is provided on a side wall at one end of the fixed section, the telescopic section is slidably connected in the sliding groove, and the end of the telescopic section away from the fixed section forms the first starting end or the first ending end.

[0021] In one embodiment, two opposite inner side walls of the slide groove are provided with guide grooves, and two opposite sides of the telescopic section are provided with guide bars protruding therefrom, and the guide bars are slidably connected to the corresponding guide grooves.

[0022] In one embodiment, the photoelectric sensor assembly includes:

[0023] a second photoelectric switch, the second photoelectric switch being fixed to the end plate and located within the circular ring, and being located in front of and below the first photoelectric switch in a clockwise direction;

[0024] The first arc-shaped plate is provided with a second arc-shaped sensing protrusion segment. In the clockwise direction, the second arc-shaped sensing protrusion segment is located behind and below the first arc-shaped sensing protrusion segment. The second arc-shaped sensing protrusion segment has a second starting end and a second end. The horizontal distance between the second end and the first starting end is equal to the horizontal distance between the second photoelectric switch and the first photoelectric switch.

[0025] When the second photoelectric switch rotates from the second starting end to the second end end, the second photoelectric switch recognizes that the rotation angle range of the outer ring is [-b, -a), where b is a positive number and greater than a.

[0026] In one embodiment, the first arc-shaped plate is provided with a third arc-shaped sensing protrusion segment. In a clockwise direction, the third arc-shaped sensing protrusion segment is located in front of and below the first arc-shaped sensing protrusion segment. The third arc-shaped sensing protrusion segment has a third starting end and a third ending end.

[0027] When the second photoelectric switch rotates from the third starting end to the third end end, the second photoelectric switch recognizes that the rotation angle range of the outer ring is (a, b).

[0028] In one embodiment, the photoelectric sensor assembly includes:

[0029] a third photoelectric switch, the third photoelectric switch being fixed to the end plate and being located within the circular ring, and being located behind and below the first photoelectric switch in a clockwise direction;

[0030] The arc-shaped sensing segment comprises:

[0031] a second arc-shaped plate, the second arc-shaped plate being fixed to the inner side of the circular ring, the second arc-shaped plate being provided with a fourth arc-shaped sensing protrusion segment, the fourth arc-shaped sensing protrusion segment being located in front of and below the first arc-shaped sensing protrusion segment in a clockwise direction, and the fourth arc-shaped sensing protrusion segment having a fourth end;

[0032] In the counterclockwise direction, when the third photoelectric switch rotates to the fourth end, the third photoelectric switch recognizes that the rotation angle of the outer ring is -c, where c is a positive number and greater than b.

[0033] In one embodiment, the photoelectric sensor assembly includes:

[0034] a fourth photoelectric switch, the fourth photoelectric switch being fixed to the end plate, the fourth photoelectric switch being located within the ring, and the fourth photoelectric switch being located between the third photoelectric switch and the first photoelectric switch;

[0035] The fourth arc-shaped sensing protrusion segment has a fourth starting end;

[0036] In the clockwise direction, when the fourth photoelectric switch rotates to the fourth starting end, the fourth photoelectric switch recognizes that the rotation angle of the outer ring is d, and d is a positive number and greater than b.

[0037] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0038] The outer ring rotates relative to the inner ring, driving the photoelectric sensor assembly in circular motion. The arc-shaped sensing segment is fixed to the circular ring, which is fixed to the stationary inner ring. This allows the photoelectric sensor assembly to rotate and sweep across the path of the arc-shaped sensing segment, allowing the photoelectric sensor assembly to sense and identify the outer ring's rotation range. This avoids the problem of mechanical contact sensing occupying a large layout space and requiring high assembly precision. The modular design of the photoelectric sensor assembly offers strong compatibility, effectively reducing the device's usable space and improving the device's requirements for assembly precision. Using a photoelectric switch as the signal feedback terminal enables rotary machine angular range identification and limit sensing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 A schematic diagram of the three-dimensional structure of the slewing mechanism direction angle interval recognition and limit sensing device from the first perspective;

[0041] Figure 2 A schematic diagram of the three-dimensional structure of the slewing mechanism direction angle interval recognition and limit sensing device from a second perspective;

[0042] Figure 3 It is a structural diagram of the connection between the receiving rod and the adjusting block;

[0043] Figure 4 A structural diagram showing the positional relationship between the photoelectric sensor assembly and the arc-shaped sensing segment;

[0044] Figure 5 This is a structural diagram of the connection between the fixed section and the telescopic section.

[0045] In the figure: 1. Inner ring; 2. Outer ring; 3. End plate; 4. Photoelectric sensor assembly; 41. First photoelectric switch; 42. Second photoelectric switch; 43. Third photoelectric switch; 44. Fourth photoelectric switch; 5. Ring; 6. Arc-shaped sensing section; 61. First arc plate; 611. First starting end; 612. First end; 613. Fixed section; 6131. ​​Slide groove; 6132. Guide groove; 614. Telescopic section; 6141. Guide bar; 615. Second starting end; 616. Second end; 617. Third starting end; 618. Third end; 62. Second arc plate; 621. Fourth starting end; 622. Fourth end; 7. Connecting rod; 8. Adjusting block; 81. Bar hole; 82. Adjusting screw DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] The present invention provides a device for identifying and limiting the angular range of a rotary mechanism, avoiding the large space requirements and high assembly precision requirements of mechanical contact sensing. The modular design of the photoelectric sensor assembly offers strong compatibility, effectively reducing the device's footprint and improving the assembly precision requirements. The use of a photoelectric switch as a signal feedback terminal enables both angular range identification and limit sensing for the rotary machine.

[0048] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a slewing mechanism directional angle interval identification and limit sensing device, which includes: a bearing, the bearing includes an inner ring 1 and an outer ring 2 rotatably connected to the inner ring 1; an end plate 3, the end plate 3 is fixed to the outer ring 2, and the end plate 3 is installed with a photoelectric sensor assembly 4; a circular ring 5, the circular ring 5 is fixed to the bottom end face of the inner ring 1, the photoelectric sensor assembly 4 is located inside the circular ring 5, and the inner side wall of the circular ring 5 is provided with an arc-shaped sensing section 6; the outer ring 2 can drive the photoelectric sensor assembly 4 to rotate and sweep across the path of the arc-shaped sensing section 6, so that the photoelectric sensor assembly 4 senses and identifies the rotation interval of the outer ring 2.

[0049] In this embodiment, the end plate 3 is fixed to the top surface of the outer ring 2, the photoelectric sensor assembly 4 is installed on the end plate 3 and is located inside the inner ring 1, and the circular ring 5 is coaxially fixed to the bottom end surface of the inner ring 1, and the inner side wall of the circular ring 5 is provided with an arc-shaped sensing section 6 adapted to the photoelectric sensor assembly 4.

[0050] Specifically, the inner ring 1 is rotatably connected to the outer ring 2, allowing the outer ring 2 to rotate freely relative to the inner ring 1. An end plate 3 is fixed to the outer ring 2 and mounted with a photoelectric sensor assembly 4. This design ensures that the photoelectric sensor assembly 4 rotates with the outer ring 2. A circular ring 5 is fixed to the inner sidewall of the inner ring 1, and its inner sidewall is provided with an arc-shaped sensing segment 6. The photoelectric sensor assembly 4 is located within the circular ring 5, so that when the outer ring 2 rotates, the photoelectric sensor assembly 4 can scan the path of the arc-shaped sensing segment 6. The photoelectric sensor assembly 4 is used to sense and identify the rotation range of the outer ring 2. As the photoelectric sensor assembly 4 rotates with the outer ring 2, its relative position with the arc-shaped sensing segment 6 changes, thereby sensing different angles. The cooperation between the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6 enables precise identification and position limiting of the outer ring 2's rotation angle. When the outer ring 2 rotates within the set angle range, the photoelectric sensor assembly 4 generates a signal, thereby implementing position limiting control of the rotation mechanism. Through the precise coordination of the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6, the device accurately identifies the rotation angle of the outer ring 2, providing the basis for precise control of the slewing mechanism. This device also implements position-limiting control of the slewing mechanism, preventing it from exceeding the set angle range, thereby ensuring safe operation of the equipment. The use of a bearing structure and photoelectric sensing technology ensures high stability and reliability during rotation, adapting to various complex operating environments. Through a clever structural design, the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6 are integrated, simplifying the device's structure and facilitating installation and maintenance. This avoids the large layout space occupied by mechanical contact sensing and the high assembly precision requirements.

[0051] In one embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the slewing mechanism direction angle interval identification and limit sensing device includes: a connecting rod 7, one end of the connecting rod 7 is fixed to the end plate, and the other end of the connecting rod 7 is located in the ring 5; an adjusting block 8, the adjusting block 8 is provided with a strip hole 81, and the adjusting block 8 is fixed to the other end of the connecting rod 7 by bolts through the strip hole 81; and a photoelectric sensor assembly 4 is installed on the adjusting block 8.

[0052] In this embodiment, one end of the connecting rod 7 is fixed to the end plate 3, and the other end extends into the circular ring 5. This design ensures that the photoelectric sensor assembly 4 can move with the rotation of the outer ring 2 and the end plate 3, while maintaining its relative positional relationship with the arc-shaped sensing segment 6 in the circular ring 5. The adjustment block 8 is provided with a strip hole 81, which is fixed to the other end of the connecting rod 7 by bolts through the strip hole 81. This design allows the adjustment block 8 to be fine-tuned along the direction of the strip hole 81 on the connecting rod 7, thereby adjusting the relative position between the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6. The photoelectric sensor assembly 4 is mounted on the adjustment block 8, and this design facilitates position adjustment and maintenance of the photoelectric sensor assembly 4. The fine-tuning function of the adjustment block 8 can ensure a more precise fit between the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6. The design of the connecting rod 7 and the adjustment block 8 allows the position of the photoelectric sensor assembly 4 to be adjusted more flexibly. This helps to accurately adjust the relative position between the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6 according to actual needs during the installation and debugging process, thereby improving the accuracy and reliability of the device. The photoelectric sensor assembly 4 is mounted on the adjustment block 8, which is convenient for disassembly and replacement. When the photoelectric sensor assembly 4 fails or needs to be upgraded, it can be easily removed from the adjustment block 8 for maintenance or replacement. Because the adjustment block 8 has a fine-tuning function, the device can adapt to rings 5 ​​and arc-shaped sensing segments 6 of different sizes and specifications. This enhances the versatility and adaptability of the device, enabling it to be used in more types of rotary mechanisms.

[0053] In one embodiment, Figure 3 As shown, the connecting rod 7 is an L-shaped structure, the parallel section passes through the end plate 3 and is in contact with the top surface of the end plate 3 and connected by bolts, and the vertical section passes through the end plate 3 and enters the interior of the ring 5.

[0054] In one embodiment, Figure 1 、 Figure 2 and Figure 3 As shown, the adjustment block 8 is threadedly connected to an adjustment screw 82 , and the photoelectric sensor assembly 4 is mounted on the adjustment screw 82 .

[0055] In this embodiment, a threaded hole is reserved in the middle of the adjustment block 8 for installing the photoelectric sensor assembly 4. The photoelectric sensor assembly 4 adjusts the distance between the light sensing head and the arc-shaped sensing section 6 to enter the effective sensing distance by adjusting the screw 82 to screw in the depth. After the photoelectric sensor assembly 4 is adjusted to the effective position, it is fixed in reverse by a nut.

[0056] In one embodiment, Figure 4As shown, the photoelectric sensor assembly 4 includes: a first photoelectric switch 41, which is fixed to the end plate 3 and is located inside the ring 5; the arc-shaped sensing segment 6 includes: a first arc-shaped plate 61, which is fixed to the inner side of the ring 5, and the first arc-shaped plate 61 is provided with a first arc-shaped sensing protrusion segment, and the first arc-shaped sensing protrusion segment has a first starting end 611 and a first end 612; when the first photoelectric switch 41 rotates from the first starting end 611 to the first end 612, the first photoelectric switch 41 recognizes that the rotation angle range of the outer ring 2 is [-a, a], where a is a positive number.

[0057] In this embodiment, the first photoelectric switch 41 is securely fixed to the end plate 3 and carefully positioned inside the ring 5. This arrangement ensures that the first photoelectric switch 41 maintains a stable relative position with the first arc-shaped sensing protrusion as it rotates with the outer ring 2, thereby achieving accurate angle recognition.

[0058] The first curved plate 61 is securely mounted on the inner wall of the ring 5. It features a carefully designed first curved sensing protrusion. This protrusion has a distinct first starting point 611 and a first ending point 612. Together, they work in conjunction with the first photoelectric switch 41 to define the rotational angle range of the outer ring 2. Driven by the outer ring 2, the end plate 3 and the first photoelectric switch 41 rotate accordingly. As the first photoelectric switch 41 moves from the first starting point 611 to the first ending point 612, it continuously senses the changes in the first curved sensing protrusion and, based on this, identifies the rotational angle of the outer ring 2. Specifically, when the first photoelectric switch 41 completes its rotation from the first starting point 611 to the first ending point 612, it indicates that the outer ring 2 has rotated within the angular range [-a, a], where a is a positive number representing the maximum rotation angle. Thanks to the close coordination between the first photoelectric switch 41 and the first curved sensing protrusion, the device achieves highly accurate detection of the rotational angle of the outer ring 2. This is crucial for applications requiring precise control of rotating mechanisms. Once the rotation angle of the outer ring 2 exceeds the range [-a, a], the first photoelectric switch 41 immediately turns off the signal, thereby switching the sensing range of the rotary mechanism. The device's design is compact and rational, with the photoelectric sensor assembly 4 and arc-shaped sensing segment 6 highly integrated, making installation and maintenance easy. Furthermore, its simple mechanical structure and photoelectric sensing principle reduce the risk of failure and improve device reliability.

[0059] In one embodiment, Figure 5 As shown, the first arc-shaped sensing protrusion section includes a fixed section 613 and a telescopic section 614. A sliding groove 6131 is opened on the side wall of one end of the fixed section 613. The telescopic section 614 is slidably connected in the sliding groove 6131. ​​The end of the telescopic section 614 away from the fixed section 613 forms a first starting end 611 or a first end 612.

[0060] In this embodiment, the fixed section 613 serves as the base of the first arc-shaped sensing protrusion and is securely connected to the first curved plate 61. A slot 6131 is defined on one sidewall of the fixed section 613, providing space for the telescopic section 614 to slide. The telescopic section 614 slides within the slot 6131 of the fixed section 613. This design allows the telescopic section 614 to be adjusted as needed, thereby varying the overall length of the first arc-shaped sensing protrusion. The end of the telescopic section 614 distal from the fixed section 613 forms the first starting end 611 or the first ending end 612. This allows the angular range recognized by the first photoelectric switch 41 to be flexibly altered by adjusting the position of the telescopic section 614. Adjusting the rotational range of the outer ring 2 can be achieved by sliding the telescopic section 614 within the slot 6131. ​​For example, to increase the angular range of recognition, the telescopic section 614 can be slid away from the fixed section 613; conversely, it can be slid toward the fixed section 613.

[0061] As the outer ring 2 rotates, the first photoelectric switch 41 moves along the first arc-shaped sensing protrusion formed by the fixed section 613 and the telescopic section 614. As the first photoelectric switch 41 moves from the first starting end 611 (or first ending end 612) formed by the telescopic section 614 to the other end, it identifies the rotational angle range of the outer ring 2.

[0062] The sliding connection of the telescopic section 614 within the slot 6131 allows the user to flexibly adjust the rotation angle range of the outer ring 2 according to actual needs. This enhances the device's versatility and adaptability, enabling it to meet the needs of various application scenarios. Although the position of the telescopic section 614 can be adjusted, the coordination between the first photoelectric switch 41 and the first arc-shaped sensing protrusion section remains highly precise. This ensures the device's accuracy in identifying the rotation angle of the outer ring 2. The sliding connection between the telescopic section 614 and the fixed section 613 is simple and easy to operate. This allows the user to easily adjust the angle range or perform maintenance, reducing the maintenance difficulty and cost of the device.

[0063] In one embodiment, Figure 5 As shown, two opposite inner side walls of the sliding groove 6131 are provided with guide grooves 6132 , and two opposite sides of the telescopic section 614 are provided with guide bars 6141 , which are slidably connected to the corresponding guide grooves 6132 .

[0064] In this embodiment, guide grooves 6132 are provided on opposing inner walls of the slideway 6131. ​​These grooves provide a stable sliding path for the telescopic section 614, ensuring it does not deviate from its intended path during sliding. Guide bars 6141 are provided on opposing sides of the telescopic section 614. These guide bars mate with the guide grooves 6132 within the slideway 6131, allowing the telescopic section 614 to slide smoothly within the slideway 6131. ​​To adjust the position of the telescopic section 614 to change the recognized angle range, the user simply slides the guide bars 6141 along the guide grooves 6132. This design ensures that the telescopic section 614 remains stable during sliding, preventing it from deviating from its intended position due to external forces or vibration. As the first photoelectric switch 41 rotates with the outer ring 2, it moves along the first arc-shaped sensing protrusion formed by the fixed section 613 and the telescopic section 614 (through the cooperation of the guide bars 6141 and the guide grooves 6132). This stable coordination ensures that the first photoelectric switch 41 can accurately detect the rotation angle of the outer ring 2.

[0065] In one embodiment, Figure 4 As shown, the photoelectric sensor assembly 4 includes: a second photoelectric switch 42, which is fixed to the end plate 3 and is located in the circular ring 5. In the clockwise direction, the second photoelectric switch 42 is located in front of and below the first photoelectric switch 41; the first arc-shaped plate 61 is provided with a second arc-shaped sensing protrusion segment, which is located in the clockwise direction and behind and below the first arc-shaped sensing protrusion segment. The second arc-shaped sensing protrusion segment has a second starting end 615 and a second end 616, and the horizontal distance between the second end 616 and the first starting end 611 is equal to the horizontal distance between the second photoelectric switch 42 and the first photoelectric switch 41; when the second photoelectric switch 42 rotates along the second starting end 615 to the second end 616, the second photoelectric switch 42 recognizes that the rotation angle range of the outer ring 2 is [-b, -a), where b is a positive number and greater than a.

[0066] In this embodiment, the second photoelectric switch 42 is also fixed to the end plate 3 and located within the ring 5. Importantly, it is placed in front of and below the first photoelectric switch 41 in a clockwise direction. This layout ensures that the second photoelectric switch 42 can sense the second arc-shaped sensing protrusion section after the first photoelectric switch 41 (in a clockwise direction). In addition to the first arc-shaped sensing protrusion section, a second arc-shaped sensing protrusion section is also provided on the first arc-shaped plate 61. This second arc-shaped sensing protrusion section is located in the clockwise direction behind and below the first arc-shaped sensing protrusion section. It has a clear second starting end 615 and a second end 616. In particular, the horizontal spacing between the second end 616 and the first starting end 611 is designed to be equal to the horizontal spacing between the second photoelectric switch 42 and the first photoelectric switch 41. This design ensures that when the outer ring 2 rotates, the second photoelectric switch 42 can accurately move from the second starting end 615 to the second end 616 and connect with the recognition range of the first photoelectric switch 41. When the outer ring 2 rotates clockwise, the second photoelectric switch 42 first senses the second starting end 615 and, as rotation continues, moves along the second arc-shaped sensing protrusion to the second end 616. During this process, the second photoelectric switch 42 identifies the outer ring 2's rotation angle range as [-b, -a), where b is a positive number greater than a. This design allows the device to recognize a wider angular range and, in conjunction with the first photoelectric switch 41, enables continuous and accurate recognition of the outer ring 2's rotation angle. By introducing the second photoelectric switch 42 and the second arc-shaped sensing protrusion, the device can now recognize a wider angular range. This is very useful for applications that require monitoring a larger rotation range.

[0067] The coordination between the second photoelectric switch 42 and the second curved sensing protrusion is carefully designed to ensure accurate identification of the outer ring 2's rotation angle. This accuracy is crucial for applications requiring high-precision control. The recognition ranges of the first and second photoelectric switches 41, 42 are designed to interlock, ensuring continuity and consistency in the device's identification of the outer ring 2's rotation angle. This is highly advantageous for applications requiring seamless monitoring and control.

[0068] In one embodiment, Figure 4 As shown, the first arc-shaped plate 61 is provided with a third arc-shaped sensing protrusion segment. In the clockwise direction, the third arc-shaped sensing protrusion segment is located in front and below the first arc-shaped sensing protrusion segment. The third arc-shaped sensing protrusion segment has a third starting end 617 and a third end 618. When the second photoelectric switch 42 rotates from the third starting end 617 to the third end 618, the second photoelectric switch 42 recognizes that the rotation angle range of the outer ring 2 is (a, b].

[0069] In this embodiment, in addition to the existing first and second curved sensing protrusions on the first curved plate 61, a third curved sensing protrusion is also added. This third curved sensing protrusion is located clockwise, in front of and below the first curved sensing protrusion. It has a distinct third starting point 617 and a third end point 618. When the outer ring 2 rotates clockwise, the second photoelectric switch 42, after identifying the second curved sensing protrusion, continues to move clockwise and senses the third starting point 617 of the third curved sensing protrusion. As rotation continues, the second photoelectric switch 42 moves along the third curved sensing protrusion to the third end point 618. During this process, the second photoelectric switch 42 identifies the rotation angle range of the outer ring 2 as (a, b). This range complements the ranges [-b, -a] and [-a, a] identified by the first photoelectric switch 41, enabling the device to cover a wider range of rotation angles. By combining the first and second photoelectric switches 41 and 42 with their corresponding curved sensing protrusions, the device can now detect the rotation angle of the outer ring 2 within multiple different ranges. This design enhances the device's flexibility and applicability, enabling it to meet the needs of a wider range of application scenarios. By adding a third curved sensing protrusion, in conjunction with the second photoelectric switch 42, the device can now detect the rotation of the outer ring 2 within a wider range of angles. This is particularly useful for applications requiring monitoring of a wide range of rotations. The device's ability to detect multiple different angle ranges enhances its flexibility and applicability. Users can select which photoelectric switches and curved sensing protrusions to use based on their specific needs to achieve specific monitoring and control functions. The combination of multiple photoelectric switches and curved sensing protrusions ensures greater reliability and stability in detecting the rotation angle of the outer ring 2. Even if a photoelectric switch or curved sensing protrusion fails, the remaining components will continue to function normally, ensuring continuous operation of the device.

[0070] In one embodiment, Figure 4 As shown, the photoelectric sensor assembly 4 includes: a third photoelectric switch 43, which is fixed to the end plate 3 and is located inside the ring 5. In the clockwise direction, the third photoelectric switch 43 is located behind and below the first photoelectric switch 41; the arc-shaped sensing segment 6 includes: a second arc-shaped plate 62, which is fixed to the inner side of the ring 5. The second arc-shaped plate 62 is provided with a fourth arc-shaped sensing protrusion segment. In the clockwise direction, the fourth arc-shaped sensing protrusion segment is located in front and below the first arc-shaped sensing protrusion segment, and the fourth arc-shaped sensing protrusion segment has a fourth end 622; in the counterclockwise direction, when the third photoelectric switch 43 rotates to the fourth end 622, the third photoelectric switch 43 recognizes that the rotation angle of the outer ring 2 is -c, where c is a positive number and greater than b.

[0071] In this embodiment, the third photoelectric switch 43 is fixed to the end plate 3 and located within the ring 5. Clockwise, it is located below and behind the first photoelectric switch 41. This layout ensures that the third photoelectric switch 43 can sense the fourth arc-shaped sensing protrusion after the first photoelectric switch 41 (counterclockwise).

[0072] The second arc-shaped plate 62 is fixed to the inner side of the circular ring 5, and is similar to the first arc-shaped plate 61. It is used to support and position the arc-shaped sensing protrusion segment. A fourth arc-shaped sensing protrusion segment is provided on the second arc-shaped plate 62. This fourth arc-shaped sensing protrusion segment is located in front and below the first arc-shaped sensing protrusion segment in the clockwise direction. In particular, it has a clear fourth end 622 for cooperating with the third photoelectric switch 43. When the outer ring 2 rotates in the counterclockwise direction, the third photoelectric switch 43 will first sense the fourth end 622 of the fourth arc-shaped sensing protrusion segment, and it will recognize that the rotation angle of the outer ring 2 is -c, where c is a positive number and is greater than b. This design allows a specific limit angle -c to be identified in the counterclockwise direction, which helps protect the equipment from damage caused by excessive rotation and prevents potential safety hazards. This is very useful for application scenarios that require monitoring of a large range of counterclockwise rotation.

[0073] In one embodiment, Figure 4 As shown, the photoelectric sensor assembly 4 includes: a fourth photoelectric switch 44, the fourth photoelectric switch 44 is fixed to the end plate 3, the fourth photoelectric switch 44 is located in the ring 5, and the fourth photoelectric switch 44 is located between the third photoelectric switch 43 and the first photoelectric switch 41; the fourth arc-shaped sensing protrusion segment has a fourth starting end 621; in the clockwise direction, when the fourth photoelectric switch 44 rotates to the fourth starting end 621, the fourth photoelectric switch 44 recognizes that the rotation angle of the outer ring 2 is d, and d is a positive number and greater than b.

[0074] In this embodiment, the fourth photoelectric switch 44 is fixed to the end plate 3 and located within the circular ring 5. Specifically, it is placed between the third photoelectric switch 43 and the first photoelectric switch 41. This arrangement ensures that the fourth photoelectric switch 44 can sense the fourth arc-shaped sensing protrusion within a specific rotation angle range. The fourth arc-shaped sensing protrusion was previously described as being located on the second arc-shaped plate 62 and having a fourth end 622. Now, we also know that it has a fourth starting end 621. The fourth starting end 621 is designed to cooperate with the fourth photoelectric switch 44 and can be detected when the outer ring 2 rotates to a specific angle. When the outer ring 2 rotates clockwise, the fourth photoelectric switch 44 first senses the fourth starting end 621 of the fourth arc-shaped sensing protrusion. At this moment, the fourth photoelectric switch 44 recognizes that the outer ring 2 has rotated to an angle of d, where d is a positive number greater than b. This design allows identification of a specific limit angle d in the clockwise direction, helping to protect the device from damage caused by excessive rotation and preventing potential safety hazards. This is very useful for applications that require monitoring a wide range of clockwise rotation.

[0075] In one embodiment, Figure 4 As shown, the specific structural designs of the second, third and fourth arc-shaped sensing protrusion segments can all refer to the structural designs of the fixed segment 613 and the telescopic segment 614 of the first arc-shaped sensing protrusion segment, and will not be described in detail.

[0076] In the description of this application, it should be noted that the terms "upper" and "lower" 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 this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0077] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising 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 sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0078] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A slewing mechanism direction angle interval identification and limit sensing device, characterized in that: It includes: A bearing comprising an inner ring (1) and an outer ring (2) rotatably connected to the inner ring (1); an end plate (3), the end plate (3) being fixed to the outer ring (2), and the end plate (3) being equipped with a photoelectric sensor assembly (4); A circular ring (5), wherein the circular ring (5) is fixed to the bottom end surface of the inner ring (1), the photoelectric sensor assembly (4) is located inside the circular ring (5), and an arc-shaped sensing section (6) is provided on the inner side wall of the circular ring (5); The outer ring (2) can drive the photoelectric sensor assembly (4) to rotate and sweep across the path of the arc-shaped sensing section (6), so that the photoelectric sensor assembly (4) can sense and identify the rotation range of the outer ring (2).

2. The slewing mechanism direction angle interval identification and limit sensing device according to claim 1, characterized in that: The slewing mechanism direction angle interval recognition and limit sensing device includes: a connecting rod (7), one end of the connecting rod (7) being fixed to the end plate, and the other end of the connecting rod (7) being located inside the circular ring (5); An adjusting block (8), wherein the adjusting block (8) is provided with a strip-shaped hole (81), and the adjusting block (8) is fixed to the other end of the connecting rod (7) by a bolt through the strip-shaped hole (81); The photoelectric sensor assembly (4) is mounted on the adjustment block (8).

3. The slewing mechanism direction angle interval identification and limit sensing device according to claim 2, characterized in that: The regulating block (8) is threadedly connected to an adjusting screw (82), and the photoelectric sensor assembly (4) is mounted on the adjusting screw (82).

4. The slewing mechanism direction angle interval identification and limit sensing device according to claim 1, characterized in that: The photoelectric sensor assembly (4) comprises: a first photoelectric switch (41), the first photoelectric switch (41) being fixed to the end plate (3), and the first photoelectric switch (41) being located inside the circular ring (5); The arc-shaped sensing section (6) comprises: A first arc-shaped plate (61), the first arc-shaped plate (61) being fixed to the inner side of the circular ring (5), the first arc-shaped plate (61) being provided with a first arc-shaped sensing protrusion section, the first arc-shaped sensing protrusion section having a first starting end (611) and a first ending end (612); When the first photoelectric switch (41) rotates from the first starting end (611) to the first end (612), the first photoelectric switch (41) recognizes that the rotation angle range of the outer ring (2) is [-a, a], where a is a positive number.

5. The slewing mechanism direction angle interval identification and limit sensing device according to claim 4, characterized in that: The first arc-shaped sensing protrusion section includes a fixed section (613) and a telescopic section (614), a side wall at one end of the fixed section (613) is provided with a sliding groove (6131), the telescopic section (614) is slidably connected in the sliding groove (6131), and the end of the telescopic section (614) away from the fixed section (613) forms the first starting end (611) or the first ending end (612).

6. The slewing mechanism direction angle interval identification and limit sensing device according to claim 5, characterized in that: The two opposite inner side walls of the slide groove (6131) are provided with guide grooves (6132), and the two opposite sides of the telescopic section (614) are provided with guide strips (6141) protruding therefrom, and the guide strips (6141) are slidably connected to the corresponding guide grooves (6132).

7. The slewing mechanism direction angle interval identification and limit sensing device according to claim 4, characterized in that: The photoelectric sensor assembly (4) comprises: a second photoelectric switch (42), the second photoelectric switch (42) being fixed to the end plate (3), the second photoelectric switch (42) being located within the circular ring (5), and being located in front of and below the first photoelectric switch (41) in a clockwise direction; The first arc-shaped plate (61) is provided with a second arc-shaped sensing protrusion section, and in a clockwise direction, the second arc-shaped sensing protrusion section is located below and behind the first arc-shaped sensing protrusion section, and the second arc-shaped sensing protrusion section has a second starting end (615) and a second end (616), and the horizontal distance between the second end (616) and the first starting end (611) is equal to the horizontal distance between the second photoelectric switch (42) and the first photoelectric switch (41); When the second photoelectric switch (42) rotates from the second starting end (615) to the second end (616), the second photoelectric switch (42) recognizes that the rotation angle range of the outer ring (2) is [-b, -a), where b is a positive number and greater than a.

8. The slewing mechanism direction angle interval identification and limit sensing device according to claim 7, characterized in that: The first arc-shaped plate (61) is provided with a third arc-shaped sensing protrusion section, and in a clockwise direction, the third arc-shaped sensing protrusion section is located in front of and below the first arc-shaped sensing protrusion section, and the third arc-shaped sensing protrusion section has a third starting end (617) and a third ending end (618); When the second photoelectric switch (42) rotates from the third starting end (617) to the third end (618), the second photoelectric switch (42) recognizes that the rotation angle range of the outer ring (2) is (a, b).

9. The slewing mechanism direction angle interval identification and limit sensing device according to claim 8, characterized in that: The photoelectric sensor assembly (4) comprises: a third photoelectric switch (43), the third photoelectric switch (43) being fixed to the end plate (3), the third photoelectric switch (43) being located within the circular ring (5), and being located below and behind the first photoelectric switch (41) in a clockwise direction; The arc-shaped sensing section (6) comprises: a second arc-shaped plate (62), the second arc-shaped plate (62) being fixed to the inner side of the circular ring (5), the second arc-shaped plate (62) being provided with a fourth arc-shaped sensing protrusion segment, the fourth arc-shaped sensing protrusion segment being located in front of and below the first arc-shaped sensing protrusion segment in a clockwise direction, the fourth arc-shaped sensing protrusion segment having a fourth end (622); In the counterclockwise direction, when the third photoelectric switch (43) rotates to the fourth end (622), the third photoelectric switch (43) recognizes that the rotation angle of the outer ring (2) is -c, and c is a positive number and greater than b.

10. The slewing mechanism direction angle interval identification and limit sensing device according to claim 9, characterized in that: The photoelectric sensor assembly (4) comprises: a fourth photoelectric switch (44), the fourth photoelectric switch (44) being fixed to the end plate (3), the fourth photoelectric switch (44) being located within the ring (5), and the fourth photoelectric switch (44) being located between the third photoelectric switch (43) and the first photoelectric switch (41); The fourth arc-shaped sensing protrusion segment has a fourth starting end (621); In the clockwise direction, when the fourth photoelectric switch (44) rotates to the fourth starting end (621), the fourth photoelectric switch (44) recognizes that the rotation angle of the outer ring (2) is d, which is a positive number and greater than b.

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