Excavator rotation multi-stage warning and alarming device
The multi-level alarm mechanism combining cameras, radar modules and rotation detection devices solves the problems of high false alarm rate and single alarm mode of traditional excavator warning devices, realizes accurate danger level differentiation and high-speed rotation adaptation, and improves the safety and intelligence of excavator operation.
Patent Information
- Application Number
- CN202511081097.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-04
- Publication Date
- 2025-09-16
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional excavator warning devices rely on mechanical limits or single sensors, have a high false alarm rate, a single alarm mode, lack of hazard level differentiation, cannot adapt to high-speed rotation scenarios, and can easily cause operator paralysis.
It adopts a combination of camera, radar module and rotation detection device, realizes multi-level alarm mechanism through central processing unit, and alarms according to the level of danger. It combines servo motor and limit ring to realize accurate rotation detection, uses Hall sensor to generate pulse signal, and central processing unit implements dual response mechanism.
It achieves accurate hazard level differentiation and alarm, reduces false alarm rate, improves operational safety, adapts to high-speed rotation scenarios, and enhances the safety and intelligence of excavator operation.
Smart Images
Figure CN120649533A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of excavators, and in particular to a multi-stage warning alarm device for excavator rotation. Background Art
[0002] Excavators are heavy-duty construction machinery widely used in earthmoving, mining, construction, and other fields. Their primary functions include excavation, loading, crushing, and leveling. Traditional excavators typically consist of a powertrain (diesel engine / electric motor), a hydraulic system, a working mechanism (boom, arm, bucket), a slewing mechanism, and a traveling mechanism.
[0003] The hydraulic system is the core part of the excavator, which realizes power transmission and motion control through hydraulic pumps, control valves, hydraulic cylinders and hydraulic motors. With the complexity of engineering requirements, modern excavators are gradually developing towards high efficiency, intelligence and energy saving. An excavator is a heavy-duty construction machine used for earthmoving and excavating tasks. It usually has a hydraulic system to provide power and is equipped with various attachments and tools to complete various tasks. The excavator rotation warning device is a safety device designed to alert nearby people and vehicles to the excavator's rotation movement to avoid accidents.
[0004] The inventors believe that the following defects exist in the existing related technologies: traditional warning devices rely solely on mechanical limits or a single sensor, resulting in a high false alarm rate, a single alarm mode, and a lack of hazard level distinction, which can easily cause operator paralysis and is unable to adapt to alarms in high-speed rotation scenarios. Summary of the Invention
[0005] In order to solve the technical problems that the existing warning devices rely only on mechanical limits or a single sensor, have a high false alarm rate, a single alarm mode, lack of danger level distinction, easily cause operator paralysis, and are unable to adapt to the alarm in high-speed rotation scenarios, the present invention provides an excavator rotation multi-level warning alarm device.
[0006] The present invention is implemented by the following technical scheme: a multi-level warning alarm device for excavator rotation, comprising an equipment body and a camera, characterized in that the camera is located inside the equipment body, a servo motor is provided at the bottom of the equipment body, the top of the servo motor is fixedly connected to a limit ring, the top of the limit ring is fixedly connected to a rotating disk, the top of the rotating disk is fixedly connected to an electric push rod, the top of the electric push rod is hingedly connected to one end of the camera, a warning light is fixedly connected to the top of the equipment body, two radar modules are fixedly connected to the bottom of both sides of the equipment body, a flip cover is hingedly connected to the top of one side of the equipment body, a rotation detection device is provided on one side of the interior of the equipment body, and the rotation detection device includes a first magnet, a second magnet and a third magnet.
[0007] Preferably, the first magnet is located above the top of the second magnet, and the first magnet is located at the inner center of the third magnet. The second magnet and the third magnet form axial and radial magnetic repulsion fields. The magnetic repulsion between the first magnet and the second magnet is ≥5N, and the first magnet is suspended in the center by the magnetic repulsion.
[0008] Preferably, the top of the second magnet is fixedly connected to the bottom of the third magnet, the outside of the third magnet is fixedly connected to the rotation detection device, and the outside of the second magnet is fixedly connected to the bottom inner wall of the rotation detection device.
[0009] Preferably, the magnetism at the bottom of the first magnet repels the magnetism at the bottom of the second magnet, and the magnetism around the first magnet repels the magnetism inside the third magnet.
[0010] Preferably, a positioning cone is fixedly connected to the top center of the first magnet, a positioning hole is processed on the top inner wall of the rotation detection device, and the top of the positioning cone is plug-connected to the inside of the positioning hole.
[0011] Preferably, one end of the top of the first magnet is fixedly connected to a connecting rod, the top of the connecting rod is fixedly connected to an induction head, and one end of the induction head is contact-connected to an induction sheet.
[0012] Preferably, a plurality of placement grooves are machined inside the four sides of the rotation detection device, the interior of the plurality of placement grooves is fixedly connected to the inner side of the sensing sheet, a Hall sensor is embedded in the placement groove, and a pulse signal is generated when the sensing head contacts the sensing sheet.
[0013] Preferably, the top of the rotating disk is fixedly connected to two columns, the camera is rotatably connected between the two columns, and the camera can be adjusted by 15°-60° through an electric push rod and the columns.
[0014] Preferably, a limiting groove is processed on the bottom of the device body, and the limiting ring is rotatably connected to the inside of the limiting groove.
[0015] Preferably, the radar module uses a 77GHz millimeter wave radar with a detection distance of 0.5-10m, an angle coverage of 90° on both sides, and real-time scanning of obstacle contours.
[0016] Compared with the prior art, the present invention has the following beneficial effects: When the present invention is working, when the excavator rotates, the sensor sheet inside the rotation detection device passes over the sensor head in sequence along the placement slot, triggering the contact-disconnection action between the sensor head and the sensor sheet. The sensor head is made of flexible soft material. Every time the sensor sheet is switched, the Hall sensor group inside the rotation detection device generates a pulse electrical signal, which is transmitted to the central processing unit through the signal conditioning circuit. The central processing unit executes a dual response mechanism, thereby causing the warning light to flash and the horn to sound an alarm, reminding people next to the excavator to pay attention and get out of the way.
[0017] When the present invention is working, it is divided into three levels of alarm mechanisms according to the level of danger: Level 1, when the excavator's rotation angular speed is greater than 5° / s and the camera does not recognize people and obstacles, the warning light flashes at a low frequency, and the speaker voice prompts "Rotation operation, pay attention to safety"; Level 2, when the radar module detects an obstacle less than 3m or the camera recognizes a person, the warning light flashes at a high frequency, and the speaker issues a rapid alarm sound; Level 3, when the radar module obstacle is less than 1.5m or the camera person is less than 2m, the warning light flashes, and the speaker issues an emergency brake signal. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the internal structure of the device body of the present invention; Figure 3 It is a rear view of the device body of the present invention; Figure 4 is a cross-sectional view of a rotation detection device of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of part A in the middle.
[0019] In the figure: 1. Equipment body; 2. Camera; 3. Rotation detection device; 4. Warning light; 5. Radar module; 6. Flip cover; 7. Servo motor; 8. Limiting ring; 9. Limiting slot; 10. Rotating disk; 11. Electric push rod; 12. Column; 13. First magnet; 14. Second magnet; 15. Third magnet; 16. Positioning cone; 17. Positioning hole; 18. Connecting rod; 19. Sensor head; 20. Sensor plate; 21. Placement slot. DETAILED DESCRIPTION
[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0021] Example 1: Please refer to Figure 1 - Figure 5, a multi-stage warning alarm device for excavator rotation in this embodiment includes a device body 1 and a camera 2, characterized in that the camera 2 is located inside the device body 1, a servo motor 7 is provided at the bottom of the device body 1, the top of the servo motor 7 is fixedly connected to a limit ring 8, the top of the limit ring 8 is fixedly connected to a rotating disk 10, the top of the rotating disk 10 is fixedly connected to an electric push rod 11, the top of the electric push rod 11 is hingedly connected to one end of the camera 2, a warning light 4 is fixedly connected to the top of the device body 1, two radar modules 5 are fixedly connected to the bottom of both sides of the device body 1, a flip cover 6 is hingedly connected to the top of one side of the device body 1, and a rotation detection device 3 is provided on one side of the interior of the device body 1, and the rotation detection device 3 includes a first magnet 13, a second magnet 14 and a third magnet 15; Warning light 4 is a lighting device used to remind and alert people to specific situations or dangers. Radar module 5 has an infrared function and is suitable for nighttime operation. It can detect whether there are obstacles on both sides of the excavator. Camera 2 is used to detect the presence of personnel. Rotation detection device 3 converts the rotation angle into an electrical signal through a Hall sensor group. Camera 2 integrates AI vision function and millimeter wave radar module 5. The three are linked to control the alarm device through the central processing unit. By starting servo motor 7, servo motor 7 drives limit ring 8 to rotate, limit ring 8 drives rotating disk 10 to rotate, and rotating disk 10 drives camera 2 to rotate through column 12. Furthermore, the first magnet 13 is located above the top of the second magnet 14, and the first magnet 13 is located at the inner center of the third magnet 15. The second magnet 14 and the third magnet 15 form axial and radial magnetic repulsion fields. The magnetic repulsion between the first magnet 13 and the second magnet 14 is ≥5N. The first magnet 13 is suspended at the center by the magnetic repulsion. The top of the second magnet 14 is fixedly connected to the bottom of the third magnet 15. The outside of the third magnet 15 is fixedly connected to the rotation detection device 3. The outside of the second magnet 14 is fixedly connected to the bottom inner wall of the rotation detection device 3. The magnetism of the bottom of the first magnet 13 repels the magnetism of the bottom of the second magnet 14. The magnetism around the first magnet 13 repels the inner magnetism of the third magnet 15. A positioning cone 16 is fixedly connected to the top center of the first magnet 13. A positioning hole 17 is processed on the top inner wall of the rotation detection device 3. The top of the positioning cone 16 is plug-in connected to the inside of the positioning hole 17. The second magnet 14 and the third magnet 15 are fixed in the rotation detection device 2 to form axial and radial magnetic repulsion fields. The first magnet 13 is suspended in the center by the magnetic repulsion. The top connecting rod 18 is connected to the sensing head 19. The housing is evenly distributed with sensing pieces 20. The corresponding placement slots 21 are embedded with Hall sensors. When the sensing head 19 contacts the sensing piece 20, a pulse signal is generated. When the excavator rotates, the rotation detection device 2 rotates with the equipment body 1, while the suspended first magnet 13 remains stationary due to inertia. The induction head 19 contacts different induction plates 20 in sequence. The Hall sensor converts the mechanical displacement into an electrical signal and transmits it to the central processing unit for analysis and processing. During normal rotation, the radar module 5 warns of obstacles and the camera recognizes people. When the radar module 5 detects an obstacle and the camera recognizes a human body, the central processing unit activates the secondary alarm. Among them, due to the magnetic repulsion between the first magnet 13 and the second magnet 14 and the third magnet 15, the first magnet 13 will be suspended on the top of the second magnet 14 and located inside the third magnet 15. The top of the positioning cone 16 is located inside the positioning hole 17, supporting the first magnet 13. At the same time, the positioning cone 16 will also apply a downward squeezing force to the first magnet 13, preventing the rotation detection device 2 from moving in a suspended state, resulting in inaccurate detection by the rotation detection device 3. Furthermore, one end of the top of the first magnet 13 is fixedly connected to a connecting rod 18, and the top of the connecting rod 18 is fixedly connected to a sensing head 19. One end of the sensing head 19 is contact-connected to a sensing sheet 20. A plurality of placement grooves 21 are machined around the interior of the rotation detection device 3. The interiors of the plurality of placement grooves 21 are fixedly connected to the inner side of the sensing sheet 20. A Hall sensor is embedded in the placement groove 21. When the sensing head 19 contacts the sensing sheet 20, a pulse signal is generated. When the excavator rotates, it will drive the excavator body 3 to rotate, the excavator body 3 will drive the equipment body 1 to rotate, the equipment body 1 will drive the rotation detection device 3 inside it to rotate, and the rotation detection device 3 will drive the rotation detection device 2, the second magnet 14 and the third magnet 15 to rotate. Since the first magnet 13 is not in contact with the second magnet 14 and the third magnet 15, the first magnet 13 remains suspended and does not rotate under the action of gravity and the squeezing force of the positioning cone 16, so that the connecting rod 18 and the induction head 19 fixed to it are in a stationary state. However, the rotation of the rotation detection device 2 will drive the placement slot 21 and the induction plate 20 to rotate. Secondly, since one end of the sensing head 19 is provided with a contact point, when the sensing head 19 breaks away from the surface of one sensing sheet 20 and enters the next placement slot 21 and contacts the surface of the next sensing sheet 20, the rotation detection device 3 will receive the signal from the sensing head 19 switching the sensing sheet 20, thereby transmitting the signal to the central processing unit. The central processing unit will turn on the warning light 4, which will flash continuously as a warning. At the same time, the information processing center will turn on the speaker, which will emit a sound to remind people next to the excavator that the excavator is rotating. The radar module 5 uses a 77GHz millimeter-wave radar with a detection range of 0.5-10m and an angle coverage of 90° on both sides, scanning obstacle contours in real time. The monitoring device is an AI visual camera with an integrated human recognition algorithm. The electric push rod 11 and column 12 can achieve 15°-60° pitch and 360° horizontal rotation adjustment; Among them, different excavators have different cantilever lengths. Different rotation danger zones need to be adjusted according to different excavators. The electric push rod 11 is started to move the top of the electric push rod 11, which will drive one end of the camera 2 to move up and down, so that the camera 2 rotates around the pin of the column 12, thereby adjusting the angle of the camera 2 to adjust the size of the monitoring range; When the excavator's slewing mechanism drives the fuselage to rotate, the equipment body 1 rotates synchronously with the rotation detection device 3, and the induction plate 20 installed on the circumference of the rotation detection device 2 rotates with the shell. Since the first magnet 13 is suspended in the center position through the axial magnetic repulsion with the second magnet 203 and the radial magnetic repulsion with the third magnet 204, and the positioning cone 16 and the positioning hole 17 form a mechanical limit, the first magnet 13 remains in a spatially stationary state under the action of inertia, and the induction head 19 connected to the top connecting rod 18 is synchronously stationary.
[0022] When the rotation detection device 2 rotates, the sensor sheet 20 passes over the sensor head 19 in sequence along the placement slot 21, triggering the contact and separation action between the sensor head 19 and the sensor sheet 20. The sensor head 19 is made of flexible soft material. Every time the sensor sheet switches, the Hall sensor group inside the rotation detection device 3 generates a pulse electrical signal. The signal is transmitted to the central processing unit through the signal conditioning circuit. The central processing unit executes a dual response mechanism: Basic warning start: Synchronously activate the warning light 4 to flash at high frequency and the speaker to issue a voice warning of "swing operation, pay attention to safety"; Environmental monitoring linkage: The millimeter-wave radar 5 is activated to scan obstacles within a range of 0.5-10m on both sides. At the same time, the AI vision camera 2 adjusts the pitch angle through the electric push rod 11 and column 12 to identify people in the rear danger zone in real time. Secondly, when the excavator rotates, it is divided into three levels of alarm mechanism according to the danger level: Level 1: When the excavator's rotational angular speed is greater than 5° / s and the camera 2 does not recognize any personnel or obstacles, the warning light 4 flashes at a low frequency and the speaker voice prompts "Rotation operation, pay attention to safety"; Level 2: When the radar module 5 detects an obstacle less than 3m away or the camera 2 recognizes a person, the warning light 4 flashes at a high frequency and the speaker emits a rapid alarm sound; Level 3: When the obstacle of radar module 5 is less than 1.5m or the person recognized by camera 2 is less than 2m, warning light 4 flashes and the horn sends an emergency brake signal.
[0023] Working principle: When the excavator's slewing mechanism drives the fuselage to rotate, the equipment body 1 and the rotation detection device 3 rotate synchronously, and the induction plate 20 installed on the circumference of the rotation detection device 2 rotates with the shell. Since the first magnet 13 is suspended in the center position by the axial magnetic repulsion with the second magnet 203 and the radial magnetic repulsion with the third magnet 204, and the positioning cone 16 and the positioning hole 17 form a mechanical limit, the first magnet 13 remains in a spatially stationary state under the action of inertia, and the induction head 19 connected to its top connecting rod 18 is synchronously stationary. When the rotation detection device 2 rotates, the induction plate 20 passes over the induction head 19 in sequence along the placement slot 21, triggering the contact-disconnection action between the induction head 19 and the induction plate 20. The induction head 19 is made of flexible soft material. Every time the induction plate 20 is switched, the Hall sensor group inside the rotation detection device 3 generates a pulse electrical signal, which is transmitted to the central processing unit through the signal conditioning circuit. The central processing unit executes a dual response mechanism, thereby causing the warning light 4 to flash and the horn to sound an alarm.
[0024] The above embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.
Claims
1. A multi-stage warning alarm device for excavator rotation, comprising a device body (1) and a camera (2), characterized in that: The camera (2) is located inside the device body (1); a servo motor (7) is provided at the bottom of the device body (1); the top of the servo motor (7) is fixedly connected to a limit ring (8); the top of the limit ring (8) is fixedly connected to a rotating disk (10); the top of the rotating disk (10) is fixedly connected to an electric push rod (11); the top of the electric push rod (11) is hingedly connected to one end of the camera (2); the top of the device body (1) is fixedly connected to a warning light (4); the bottom of both sides of the device body (1) are fixedly connected to two radar modules (5); the top of one side of the device body (1) is hingedly connected to a flip cover (6); a rotation detection device (3) is provided on one side of the interior of the device body (1); the rotation detection device (3) includes a first magnet (13), a second magnet (14) and a third magnet (15).
2. The excavator rotation multi-level warning alarm device according to claim 1, characterized in that: The first magnet (13) is located above the top of the second magnet (14), and the first magnet (13) is located at the inner center of the third magnet (15). The second magnet (14) and the third magnet (15) form an axial and radial magnetic repulsion field. The magnetic repulsion between the first magnet (13) and the second magnet (14) is ≥5N, and the first magnet (13) is suspended at the center by the magnetic repulsion.
3. The excavator rotation multi-level warning alarm device according to claim 1, characterized in that: The top of the second magnet (14) is fixedly connected to the bottom of the third magnet (15), the outside of the third magnet (15) is fixedly connected to the rotation detection device (3), and the outside of the second magnet (14) is fixedly connected to the bottom inner wall of the rotation detection device (3).
4. The excavator rotation multi-stage warning alarm device according to claim 1, characterized in that: The magnetism at the bottom of the first magnet (13) repels the magnetism at the bottom of the second magnet (14), and the magnetism around the first magnet (13) repels the magnetism inside the third magnet (15).
5. The excavator rotation multi-stage warning alarm device according to claim 1, characterized in that: A positioning cone (16) is fixedly connected to the center of the top of the first magnet (13), a positioning hole (17) is machined on the top inner wall of the rotation detection device (3), and the top of the positioning cone (16) is plug-connected inside the positioning hole (17).
6. The excavator rotation multi-stage warning alarm device according to claim 1, characterized in that: One end of the top of the first magnet (13) is fixedly connected to a connecting rod (18), the top of the connecting rod (18) is fixedly connected to an induction head (19), and one end of the induction head (19) is contact-connected to an induction sheet (20).
7. The excavator rotation multi-stage warning alarm device according to claim 6, characterized in that: A plurality of placement grooves (21) are machined around the periphery of the rotation detection device (3), the interior of the plurality of placement grooves (21) is fixedly connected to the inner side of the sensing sheet (20), a Hall sensor is embedded in the placement groove (21), and a pulse signal is generated when the sensing head (19) contacts the sensing sheet (20).
8. The excavator rotation multi-stage warning alarm device according to claim 1, characterized in that: The top of the rotating disk (10) is fixedly connected to two columns (12), and the camera (2) is rotatably connected between the two columns (12). The camera (2) can be adjusted in pitch by 15°-60° via an electric push rod (11) and the columns (12).
9. The excavator rotation multi-stage warning alarm device according to claim 1, characterized in that: A limiting groove (9) is processed on the bottom of the equipment body (1), and the limiting ring (8) is rotatably connected inside the limiting groove (9).
10. The excavator rotation multi-stage warning alarm device according to claim 1, characterized in that: The radar module (5) uses a 77GHz millimeter wave radar with a detection distance of 0.5-10m and an angle coverage of 90° on both sides, and can scan the outline of obstacles in real time.