Direction angle interval recognition and limiting induction device of slewing mechanism

Abstract

The invention relates to a direction angle interval recognition and limit sensing device for a slewing mechanism, and the device comprises a bearing which comprises an inner ring and an outer ring rotatably connected to the inner ring; the end plate is fixed on the outer ring, and the end plate is provided with a photoelectric sensor assembly; the circular ring is fixed to the end face of the bottom end of the inner ring, the photoelectric sensor assembly is located in the circular ring, and an arc-shaped sensing section is arranged on the inner side wall of the circular ring; the outer ring can drive the photoelectric sensor assembly to rotate to sweep the path of the arc-shaped sensing section, so that the photoelectric sensor assembly senses and recognizes the rotating interval of the outer ring. The problems that large arrangement space is occupied by mechanical contact type induction, and the requirement for assembly precision is high can be solved. The photoelectric sensor assembly is designed in a modularized mode, compatibility is high, the use space of the device can be effectively reduced, a photoelectric switch is adopted as a signal feedback end, and direction angle interval recognition and limiting sensing of the rotary machine can be achieved.

Description

Technical Field

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

[0002] The slewing mechanism direction angle interval recognition and limit sensing device is an important part of the working process of excavators, cranes, fire climbing vehicles, etc. Some pitching action angle intervals of such vehicles need to be performed within a specific direction action angle interval, so the direction action angle interval needs to be recognized. The slewing action of the slewing mechanism needs to be limited to the direction limit, so the direction limit position needs to be sensed. The direction angle interval recognition and limit sensing should be fast and accurate.

[0003] In the related technology, the traditional slewing mechanism direction angle range identification and limit sensing device is a mechanical contact sensing device. During the slewing action, the ball head mechanical switch contacts the direction identification arc plate and feeds back the corresponding signal. The mechanical contact sensing occupies a large layout space and has high requirements for assembly accuracy. Summary of the invention

[0004] The present application provides a slewing mechanism direction angle interval recognition and limit sensing device, which can avoid the problem that mechanical contact sensing occupies a large layout space and has high assembly precision requirements. The modular design of the photoelectric sensor assembly has strong compatibility, can effectively reduce the device usage space, and improve the device's requirements for assembly precision. The use of a photoelectric switch as a signal feedback end can realize the slewing machine direction angle interval recognition and limit sensing.

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

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

[0007] An end plate, the end plate is fixed to the outer ring, and the end plate is equipped with a photoelectric sensor assembly;

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

[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 with an adjustment screw, and the photoelectric sensor assembly is mounted on the adjustment screw.

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

[0016] A first photoelectric switch, wherein the first photoelectric switch is fixed to the end plate and is located inside the circular ring;

[0017] The arc-shaped sensing section comprises:

[0018] A first arc-shaped plate, the first arc-shaped plate is fixed to the inner side of the circular ring, the first arc-shaped plate is provided with a first arc-shaped sensing protrusion section, and the first arc-shaped sensing protrusion section has a first starting end and a first 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 side wall at one end of the fixed section is provided with a sliding groove, the telescopic section is slidably connected in the sliding groove, and an 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 slot are provided with guide grooves, and two opposite sides of the telescopic section are provided with guide strips protruding therefrom, and the guide strips are slidably connected to the corresponding guide grooves.

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

[0023] A second photoelectric switch, the second photoelectric switch is fixed to the end plate, the second photoelectric switch is located in the ring, and along the clockwise direction, the second photoelectric switch is located in front of and below the first photoelectric switch;

[0024] The first arc-shaped plate is provided with a second arc-shaped sensing protrusion segment, and along the clockwise direction, the second arc-shaped sensing protrusion segment is located behind and below the first arc-shaped sensing protrusion segment, and the second arc-shaped sensing protrusion segment has a second starting end and a second end, and 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, 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, and along the clockwise direction, the third arc-shaped sensing protrusion segment is located in front and below the first arc-shaped sensing protrusion segment, and the third arc-shaped sensing protrusion segment has a third starting end and a third end;

[0027] When the second photoelectric switch rotates from the third starting end to the third 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 comprises:

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

[0030] The arc-shaped sensing section comprises:

[0031] A second arc-shaped plate, the second arc-shaped plate is fixed to the inner side of the circular ring, the second arc-shaped plate is provided with a fourth arc-shaped sensing protrusion segment, along the clockwise direction, the fourth arc-shaped sensing protrusion segment is located in front of and below the first arc-shaped sensing protrusion segment, and the fourth arc-shaped sensing protrusion segment has 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 is greater than b.

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

[0034] a fourth photoelectric switch, the fourth photoelectric switch being fixed to the end plate, the fourth photoelectric switch being located in the circular 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 brought by the technical solution provided in the embodiments of the present application include:

[0038] The outer ring rotates on the inner ring to drive the photoelectric sensor assembly to move in a circle, and the arc-shaped sensing segment is fixed to the circular ring, and the circular ring is fixed to the stationary inner ring, so that the photoelectric sensor assembly can rotate to sweep the path of the arc-shaped sensing segment, so that the photoelectric sensor assembly can sense and identify the rotation range of the outer ring. It avoids the problem that mechanical contact sensing will occupy a large layout space and require high assembly accuracy. The modular design of the photoelectric sensor assembly has strong compatibility, which can effectively reduce the use space of the device and improve the device's requirements for assembly accuracy. The use of photoelectric switches as signal feedback terminals can realize the direction angle interval recognition and limit sensing of the rotary machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. 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 creative work.

[0040] Figure 1 It is 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 It is a schematic diagram of the three-dimensional structure of the second viewing angle of the slewing mechanism direction angle interval recognition and limit sensing device;

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

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

[0044] Figure 5 It is a schematic diagram of the structure connecting 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-shaped plate; 611, first starting end; 612, first end; 613, fixed section; 6131, slide groove; 6132, guide groove; 614, telescopic section; 6141, guide strip; 615, second starting end; 616, second end; 617, third starting end; 618, third end; 62, second arc-shaped 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 solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] The embodiment of the present application provides a slewing mechanism direction angle interval recognition and limit sensing device, which can avoid the problem that mechanical contact sensing occupies a large layout space and has high assembly precision requirements. The modular design of the photoelectric sensor assembly has strong compatibility, can effectively reduce the device usage space, and improve the device's requirements for assembly precision. The use of a photoelectric switch as a signal feedback end can realize the slewing machine direction angle interval recognition and limit sensing.

[0048] like Figure 1 and Figure 2 As shown, an embodiment of the present application provides a slewing mechanism direction angle interval recognition 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 surface of the inner ring 1, the photoelectric sensor assembly 4 is located in 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 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 end 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, 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, so that the outer ring 2 can rotate freely relative to the inner ring 1. The end plate 3 is fixed on the outer ring 2 and is equipped with a photoelectric sensor assembly 4. This design can ensure that the photoelectric sensor assembly 4 rotates with the rotation of the outer ring 2. The ring 5 is fixed to the inner side wall of the inner ring 1, and the inner side wall is provided with an arc-shaped sensing segment 6. The photoelectric sensor assembly 4 is located inside the ring 5, so that when the outer ring 2 rotates, the photoelectric sensor assembly 4 can sweep 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. When the photoelectric sensor assembly 4 rotates with the outer ring 2, it will change its relative position with the arc-shaped sensing segment 6, thereby sensing different angles. Through the cooperation of the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6, the rotation angle of the outer ring 2 can be accurately identified and limited. When the outer ring 2 rotates to the set angle range, the photoelectric sensor assembly 4 will send a signal, thereby realizing the limit control of the rotary mechanism. Through the precise matching of the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6, the device can accurately identify the rotation angle of the outer ring 2, providing a basis for the precise control of the slewing mechanism. The device can realize the limit control of the slewing mechanism to prevent it from exceeding the set angle range, thereby ensuring the safe operation of the equipment. The use of bearing structure and photoelectric sensing technology makes the device have high stability and reliability during the rotation process and can adapt to various complex working environments. The device integrates the photoelectric sensor assembly 4 and the arc-shaped sensing segment 6 through a clever structural design, simplifies the structure of the device, and facilitates installation and maintenance. It avoids the problem that mechanical contact sensing occupies a large layout space and requires high assembly accuracy.

[0051] In one embodiment, if 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 which 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 the relative position relationship with the arc-shaped sensing section 6 in the circular ring 5. A strip hole 81 is provided on the adjustment block 8, 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 section 6. The photoelectric sensor assembly 4 is mounted on the adjustment block 8, and this design facilitates the position adjustment and maintenance of the photoelectric sensor assembly 4. Through the fine-tuning function of the adjustment block 8, it can be ensured that the cooperation between the photoelectric sensor assembly 4 and the arc-shaped sensing section 6 is more precise. Through the design of the connecting rod 7 and the adjustment block 8, the position of the photoelectric sensor assembly 4 can be adjusted more flexibly. This helps to accurately adjust the relative position between the photoelectric sensor assembly 4 and the arc-shaped sensing section 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 installed 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. Since the adjustment block 8 has a fine-tuning function, the device can adapt to rings 5 ​​and arc-shaped sensing sections 6 of different sizes and specifications. This enhances the versatility and adaptability of the device, allowing it to be used in more types of rotary mechanisms.

[0053] In one embodiment, if 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, if Figure 1 , Figure 2 and Figure 3 As shown, the adjusting block 8 is threadedly connected with an adjusting screw 82 , and the photoelectric sensor assembly 4 is mounted on the adjusting 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 reversely fixed by a nut.

[0056] In one embodiment, if 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 circular ring 5; the arc-shaped sensing segment 6 includes: a first arc-shaped plate 61, which is fixed to the inner side of the circular ring 5, and the first arc-shaped plate 61 is provided with a first arc-shaped sensing protruding segment, and the first arc-shaped sensing protruding 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 firmly fixed on the end plate 3, and its position is carefully set inside the ring 5. Such a layout ensures that the first photoelectric switch 41 can maintain a stable relative position with the first arc-shaped sensing protrusion segment when rotating with the outer ring 2, thereby achieving accurate angle recognition.

[0058] The first arc plate 61 is firmly mounted on the inner wall of the ring 5, and is provided with a well-designed first arc-shaped sensing protrusion section. This protrusion section has a clear first starting end 611 and a first end 612, which work together with the first photoelectric switch 41 to define the rotation 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. When the first photoelectric switch 41 moves from the first starting end 611 to the first end 612, it will continue to sense the changes in the first arc-shaped sensing protrusion section and identify the rotation angle of the outer ring 2 accordingly. In particular, when the first photoelectric switch 41 completes the rotation from the first starting end 611 to the first end 612, it indicates that the outer ring 2 has rotated an angle range of [-a, a], where a is a positive number representing the maximum angle of rotation. With the close cooperation between the first photoelectric switch 41 and the first arc-shaped sensing protrusion section, the device can achieve high-precision recognition of the rotation angle of the outer ring 2. This is crucial for application scenarios that require precise control of the rotating mechanism. Once the rotation angle of the outer ring 2 exceeds the range of [-a, a], the first photoelectric switch 41 will immediately turn off the signal, thereby realizing the conversion of the sensing range of the rotary mechanism. The design of the device is compact and reasonable, and the photoelectric sensor assembly 4 and the arc-shaped sensing section 6 are highly integrated, which is convenient for installation and maintenance. At the same time, its simple mechanical structure and photoelectric sensing principle also reduce the failure rate and improve the reliability of the device.

[0059] In one embodiment, if 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 ending end 612.

[0060] In this embodiment, the fixed section 613 serves as the base of the first arc-shaped sensing protrusion section, and the fixed section 613 is firmly connected to the first arc-shaped plate 61. A sliding groove 6131 is provided on the side wall at one end thereof, providing a sliding connection space for the telescopic section 614. The telescopic section 614 can be slidably connected in the sliding groove 6131 of the fixed section 613. This design allows the telescopic section 614 to be adjusted as required, thereby changing the overall length of the first arc-shaped sensing protrusion section. The end of the telescopic section 614 away from the fixed section 613 forms the first starting end 611 or the first end 612, which means that by adjusting the position of the telescopic section 614, the angle range recognized by the first photoelectric switch 41 can be flexibly changed. When the rotation angle range of the outer ring 2 needs to be adjusted, it can be achieved by sliding the position of the telescopic section 614 in the sliding groove 6131. ​​For example, if it is desired to increase the angle range of recognition, the telescopic section 614 can be slid in the direction away from the fixed section 613; otherwise, it can be slid in the direction close to the fixed section 613.

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

[0062] Through the sliding connection of the telescopic section 614 in the slide groove 6131, the device allows the user to flexibly adjust the rotation angle range of the outer ring 2 according to actual needs. This enhances the versatility and adaptability of the device, enabling it to meet the needs of different application scenarios. Although the position of the telescopic section 614 can be adjusted, the cooperation between the first photoelectric switch 41 and the first arc-shaped sensing protrusion section still maintains high precision. This ensures the accuracy of the device 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 in design and easy to operate. This allows the user to easily operate when adjusting the angle range or performing maintenance, reducing the maintenance difficulty and cost of the device.

[0063] In one embodiment, if Figure 5 As shown, two opposite inner side walls of the slide 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 the two opposite inner side walls of the slide groove 6131. ​​These grooves provide a stable sliding track for the telescopic section 614, ensuring that it will not deviate from the predetermined path during the sliding process. Guide bars 6141 are convexly provided on the opposite sides of the telescopic section 614. These guide bars match the guide grooves 6132 in the slide groove 6131, so that the telescopic section 614 can slide smoothly in the slide groove 6131. ​​When the position of the telescopic section 614 needs to be adjusted to change the recognized angle range, the user only needs to slide the guide bar 6141 along the guide groove 6132. This design ensures that the telescopic section 614 remains stable during the sliding process and will not deviate from the predetermined position due to external force or vibration. When the first photoelectric switch 41 rotates with the outer ring 2, it will move along the first arc-shaped sensing protrusion section composed of the fixed section 613 and the telescopic section 614 (through the cooperation of the guide bar 6141 and the guide groove 6132). This stable cooperation relationship ensures that the first photoelectric switch 41 can accurately identify the rotation angle of the outer ring 2.

[0065] In one embodiment, if 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, and in the clockwise direction, the second arc-shaped sensing protrusion segment is located behind and below the first arc-shaped sensing protrusion segment, and the second arc-shaped sensing protrusion segment has a second starting end 615 and a second end 616, and the horizontal spacing between the second end 616 and the first starting end 611 is equal to the horizontal spacing 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.

[0066] In this embodiment, the second photoelectric switch 42 is also fixed on the end plate 3 and is located in the ring 5. Importantly, it is placed in the front and lower part of the first photoelectric switch 41 in the 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 the clockwise direction). On the first arc-shaped plate 61, in addition to the first arc-shaped sensing protrusion section, a second arc-shaped sensing protrusion section is also provided. 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 in the clockwise direction, the second photoelectric switch 42 will first sense the second starting end 615, and as the rotation continues, it will move along the second arc-shaped sensing protrusion segment to the second end 616. In this process, 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 is greater than a. This design allows the device to recognize a wider angle range, and through cooperation with the first photoelectric switch 41, it achieves continuous and accurate recognition of the rotation angle of the outer ring 2. By introducing the second photoelectric switch 42 and the second arc-shaped sensing protrusion segment, the device is now able to recognize a wider angle range. This is very useful for application scenarios that require monitoring a larger rotation range.

[0067] The cooperation between the second photoelectric switch 42 and the second arc-shaped sensing protrusion is carefully designed to ensure accuracy in identifying the rotation angle of the outer ring 2. This accuracy is crucial for applications that require high-precision control. The recognition ranges of the first photoelectric switch 41 and the second photoelectric switch 42 are designed to be connected to each other, which ensures the continuity and consistency of the device when identifying the rotation angle of the outer ring 2. This is very beneficial for application scenarios that require seamless monitoring and control.

[0068] In one embodiment, if Figure 4 As shown, the first arc plate 61 is provided with a third arc-shaped sensing protrusion segment. Along 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 arc-shaped sensing protrusion section and the second arc-shaped sensing protrusion section, a third arc-shaped sensing protrusion section is also provided on the first arc-shaped plate 61. This third arc-shaped sensing protrusion section is located in the clockwise direction in front and below the first arc-shaped sensing protrusion section. It has a clear third starting end 617 and a third end 618. When the outer ring 2 rotates in the clockwise direction, the second photoelectric switch 42 will continue to move in the clockwise direction after identifying the second arc-shaped sensing protrusion section, and sense the third starting end 617 of the third arc-shaped sensing protrusion section. As the rotation continues, the second photoelectric switch 42 will move along the third arc-shaped sensing protrusion section to the third end 618. In this process, the second photoelectric switch 42 recognizes that the rotation angle range of the outer ring 2 is (a, b). This range complements the ranges [-b, -a) and [-a, a] recognized by the first photoelectric switch 41, so that the device can cover a wider range of rotation angles. By combining the first photoelectric switch 41 and the second photoelectric switch 42 with their respective corresponding arc-shaped sensing convex segments, the device can now identify the rotation angle of the outer ring 2 in multiple different intervals. This design improves the flexibility and applicability of the device, enabling it to meet the needs of more diverse application scenarios. By adding a third arc-shaped sensing convex segment and cooperating with the second photoelectric switch 42, the device can now identify the rotation of the outer ring 2 in a wider angle range. This is very useful for application scenarios that require monitoring of a wide range of rotation. The device can now identify multiple different angle intervals, which improves its flexibility and applicability. Users can choose which photoelectric switches and arc-shaped sensing convex segments to use according to actual needs to achieve specific monitoring and control functions. Through the cooperation of multiple photoelectric switches and arc-shaped sensing convex segments, the device has higher reliability and stability in identifying the rotation angle of the outer ring 2. Even if a photoelectric switch or arc-shaped sensing convex segment fails, the other parts can still work normally to ensure the continuous operation of the device.

[0070] In one embodiment, if Figure 4 As shown, the photoelectric sensor assembly 4 includes: a third photoelectric switch 43, the third photoelectric switch 43 is fixed to the end plate 3, the third photoelectric switch 43 is located in the ring 5, and along 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, the second arc-shaped plate 62 is fixed to the inner side of the ring 5, the second arc-shaped plate 62 is provided with a fourth arc-shaped sensing protruding segment, along the clockwise direction, the fourth arc-shaped sensing protruding segment is located in front and below the first arc-shaped sensing protruding segment, and the fourth arc-shaped sensing protruding segment has a fourth end 622; along 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.

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

[0072] The second arc plate 62 is fixed to the inner side of the circular ring 5, and similar to the first arc 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 plate 62. This fourth arc-shaped sensing protrusion segment is located in the front and lower part of 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 recognizes 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 to protect the equipment from damage caused by excessive rotation and prevent potential safety hazards, which is very useful for application scenarios that require monitoring of a large range of rotation in the counterclockwise direction.

[0073] In one embodiment, if 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; along 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 on the end plate 3 and is located in the ring 5. In particular, it is placed between the third photoelectric switch 43 and the first photoelectric switch 41. This layout ensures that the fourth photoelectric switch 44 can sense the fourth arc-shaped sensing protrusion segment within a specific rotation angle range. The fourth arc-shaped sensing protrusion segment has been 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 the fourth photoelectric switch 44 can identify this starting end when the outer ring 2 rotates to a specific angle. When the outer ring 2 rotates in the clockwise direction, the fourth photoelectric switch 44 will first sense the fourth starting end 621 of the fourth arc-shaped sensing protrusion segment. At this moment, the fourth photoelectric switch 44 recognizes that the rotation angle of the outer ring 2 is d, where d is a positive number and is greater than b. This design allows a specific limit angle d to be identified in the clockwise direction, which helps protect the device 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 clockwise rotation.

[0075] In one embodiment, if 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 the present application, it should be noted that the terms "upper", "lower", etc. 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 application and simplifying the description, rather than indicating or implying 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 the present 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 it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present 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 only 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 "include", "comprise" 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, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0078] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A slewing mechanism direction angle interval recognition 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 comprises: 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 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 bolts 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 adjusting block (8) is threadedly connected with 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), wherein the first photoelectric switch (41) is fixed to the end plate (3), and the first photoelectric switch (41) is 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 sliding groove (6131) is provided on a side wall at one end of the fixed section (613); the telescopic section (614) is slidably connected in the sliding groove (6131); and an 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) protrudingly, 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) is fixed to the end plate (3), the second photoelectric switch (42) is located inside the ring (5), and along 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 section, and along the clockwise direction, the second arc-shaped sensing protrusion section is located behind and below 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 is 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 segment, and along the clockwise direction, the third arc-shaped sensing protrusion segment is located in front of and below the first arc-shaped sensing protrusion segment, and 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].

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) is fixed to the end plate (3), the third photoelectric switch (43) is located inside the ring (5), and along the clockwise direction, the third photoelectric switch (43) is located behind and below the first photoelectric switch (41); 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 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, where c is a positive number and is 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 inside the circular 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, and d is a positive number and greater than b.

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