Anti-collision device applied to new energy unmanned agricultural equipment

Abstract

The utility model provides an anti-collision device applied to new energy unmanned agricultural machinery equipment, belongs to the technical field of anti-collision devices, and solves the technical problems of limited monitoring range, poor protection effect, untimely response and the like due to the adoption of a single sensor for monitoring or a simple mechanical protection structure in the conventional anti-collision device. Comprising a mounting assembly, an automatic reset type travel switch, a laser radar and an ultrasonic radar, two automatic reset rotating assemblies in bilateral symmetry are arranged at the front end of the mounting assembly, a front protection rod is fixed to the front ends of the automatic reset rotating assemblies, connecting assemblies are arranged at the left end and the right end of the front protection rod, and side protection rods are fixed to the rear ends of the connecting assemblies; and the automatic reset type travel switch is arranged on the mounting assembly. According to the utility model, through a dual protection mechanism of active detection and physical triggering, the collision occurrence rate can be reduced, after collision, the agricultural equipment can be protected, the response is quick, the agricultural equipment is stopped, and the damage caused by collision is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of anti-collision devices, and relates to an anti-collision device applied to new energy unmanned agricultural machinery equipment. Background Technology

[0002] With the rapid development of new energy technologies and artificial intelligence, the application of new energy unmanned agricultural machinery in modern agricultural production is becoming increasingly widespread. However, the complex working environment in the field, such as trees, rocks, ditches, and other obstacles, poses a high risk of collision for unmanned agricultural machinery during operation. Existing anti-collision devices mostly use single sensor monitoring or simple mechanical protection structures, which have problems such as limited monitoring range, poor protection effect, and untimely response. Some devices are also unable to effectively cope with multi-angle collisions.

[0003] Therefore, we propose an anti-collision device for new energy unmanned agricultural machinery. Through a dual protection mechanism of active detection and physical triggering, it can reduce the collision rate. After a collision occurs, it can protect the agricultural machinery and respond quickly to stop the machinery and reduce the damage caused by the collision. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in existing technologies by proposing an anti-collision device for new energy unmanned agricultural machinery. The technical problem to be solved by this utility model is: how to reduce the collision rate through a dual protection mechanism of active detection and physical triggering, and how to protect the agricultural machinery after a collision, respond quickly, stop the agricultural machinery, and reduce the damage caused by the collision.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] A collision avoidance device for new energy unmanned agricultural machinery includes an installation component, an automatic reset limit switch, a lidar, and an ultrasonic radar. The front end of the installation component has two symmetrical automatic reset rotating components. A front guard rod is fixed to the front end of the automatic reset rotating components. Connecting components are provided at both ends of the front guard rod. A side guard rod is fixed to the rear end of the connecting components. The automatic reset limit switch is mounted on the installation component, and the operating head of the automatic reset limit switch abuts against the rear end of the front guard rod. The lidar and ultrasonic radar are both mounted on the installation component.

[0007] The working principle of this utility model is as follows: During operation, the laser radar and ultrasonic radar monitor obstacles in front of and to the sides of the agricultural machinery in real time. The data is transmitted to the agricultural machinery control system to plan an obstacle avoidance path. When an obstacle is detected approaching, a warning signal is issued. If the active detection fails or a sudden collision occurs, causing the front guard bar to be impacted, the front guard bar rotates backward through the automatic reset rotating assembly to absorb the impact. This then triggers the operating head of the automatic reset type limit switch installed on the mounting assembly, causing it to be activated and transmit a signal to the agricultural machinery control system. The control system then controls the equipment to decelerate or stop. At the same time, the connecting components at both ends of the front guard bar drive the side guard bars to jointly protect against side collisions. After the impact force disappears, the automatic reset rotating assembly causes the front guard bar to automatically reset so that it can continue to provide protection.

[0008] The mounting assembly includes a frame connecting plate, a mounting bracket, a lidar mounting bracket, an ultrasonic radar mounting bracket, a limit switch bracket, and two symmetrically arranged support square tubes. The frame connecting plate is vertically arranged and has several mounting holes of different diameters. Two symmetrically arranged vertical support plates are fixed to the rear end of the frame connecting plate. The two support square tubes are arranged along the front-rear direction, and their rear ends are fixedly connected to the left and right sides of the front end of the frame connecting plate by flanges and high-strength bolts. The mounting bracket is vertically arranged, and its rear end is fixedly connected to the front end of the two support square tubes. The lidar mounting bracket and the ultrasonic radar mounting bracket are fixedly connected to the mounting bracket. The limit switch bracket is fixedly connected to one of the support square tubes, and the automatic reset limit switch is fixed to the limit switch bracket.

[0009] With the above structure, the frame connecting plate can be adapted to different models of agricultural machinery frames through mounting holes of different diameters. The support plates on both sides of the rear end enhance stability. The support square tubes on both sides are firmly connected to the front end of the frame connecting plate through flanges and high-strength bolts, providing support for the overall structure. The mounting bracket is fixed to the front end of the support square tube, and the lidar mounting bracket and ultrasonic radar mounting bracket installed on it are used to support and fix the lidar and ultrasonic radar to realize the monitoring of the surrounding environment. The limit switch bracket is fixed on the support square tube and is used to install the automatic reset type limit switch. When the front guard bar touches the switch operating head due to a collision, it ensures that the switch is stably installed and transmits signals normally, thereby ensuring the stable operation and functional realization of the entire anti-collision device.

[0010] The automatic reset rotating assembly includes a rotating support, a rotating frame, a pin, a limiting rod, and a torsion spring. The rotating support is fixedly connected to the front end of the mounting frame. The rotating frame is hinged to the front end of the rotating support via the pin, and the front end of the rotating frame is fixedly connected to the rear end of the front guard rod. The limiting rod is fixed on the rotating support and is located below the rotating frame. Under normal conditions, the lower end of the rotating frame abuts against the limiting rod. The torsion spring is sleeved on the pin, and the two rotating arms of the torsion spring abut against the rotating support and the rotating frame, respectively.

[0011] With the above structure, during operation, the rotating support is fixed to the front end of the mounting frame, providing a mounting base for the entire assembly. When impacted, the front guard bar drives the rotating frame to rotate backward around the pin. The torsion spring on the pin is compressed and undergoes elastic deformation, storing elastic potential energy. After the impact force disappears, the torsion spring releases the stored elastic potential energy, and its two rotating arms act on the rotating support and the rotating frame respectively, pushing the rotating frame to automatically reset the front guard bar to its initial position to cope with the next possible collision. The limit rod is used to limit the rotation direction of the rotating frame, ensuring that the front guard bar and side guard bars remain in the appropriate position under normal conditions.

[0012] The left and right ends of the front guard rod bend backward and upward, and the rear end of the side guard rod tilts upward away from the mounting components. The cross-section of both the front guard rod and the side guard rod is U-shaped, and several equidistant ribs are fixed inside the front guard rod and the rear end of the side guard rod is fixed with a collision trigger block. The rear end of the collision trigger block abuts against the operating head of the length adjustable automatic reset type limit switch. Both the front guard rod and the side guard rod are provided with a buffer layer made of polyurethane material.

[0013] With the above structure, when the front guard bar and side guard bars are impacted, the special shape design of the left and right ends of the front guard bar bending backward and upward, and the rear end of the side guard bar tilting upward away from the mounting components, can effectively disperse the impact force and avoid the concentration of impact force. Its U-shaped cross-section, combined with the internal equidistantly distributed ribs, enhances the structural strength and rigidity, preventing deformation and failure during collision. At the moment of impact, the collision trigger block at the rear end of the front guard bar moves backward, abutting the operating head of the automatic reset type limit switch, triggering the switch to transmit a signal to the equipment control system. At the same time, the buffer layer made of polyurethane material absorbs the impact energy through its own elastic deformation, reducing the degree of damage to the equipment from the impact.

[0014] The connecting assembly includes a corner connector, a first vertical wall, a second vertical wall, a conical component, a limiting block, a connecting screw, a nut, and a sleeve. The rear end of the corner connector is fixedly connected to the front end of the side guard rod. The first vertical wall is fixed to the front end of the corner connector, and the second vertical wall is fixed to the side end of the front guard rod. The first and second vertical walls are parallel. The rear end of the sleeve is fixedly connected to the second vertical wall. The front end of the first vertical wall is fixed with several circumferentially distributed expansion plates. The thickness of the expansion plates gradually decreases from back to front, and the outer diameter of the cylinder formed by the expansion plates is the same as the inner diameter of the sleeve. The conical component is located between the expansion plates, and the diameter of the conical component gradually increases from back to front. Several circumferentially distributed limiting blocks are fixed on the outer wall of the conical component. The number of limiting blocks corresponds to the number of expansion plates, and the limiting blocks are located between two adjacent expansion plates. The front end of the conical component is fixed with a nut. The threaded end of the connecting screw passes through the corner connector, the first vertical wall, and the rear end of the conical component in sequence and is threadedly connected to the nut.

[0015] With the above structure, when it is necessary to connect the front guard bar and the side guard bar, the cylinder formed by the expansion plate is inserted into the sleeve, and the connecting screw is tightened. During the tightening process, the conical part moves backward. Since the diameter of the conical part gradually increases from back to front, its outer wall pushes the circumferentially distributed expansion plate to expand outward. The design of the expansion plate thickness gradually decreasing from back to front allows it to deform better. When the outer diameter of the expansion plate expands to fit tightly with the inner diameter of the sleeve, a firm connection is achieved between vertical wall one and vertical wall two. This then firmly connects the corner connector at the front end of the side guard bar to the side end of the front guard bar, and the tilt angle of the side guard bar can be adjusted as needed.

[0016] The automatic reset limit switch is a roller type, with the roller of the automatic reset limit switch abutting against the rear end of the collision trigger block, and the automatic reset limit switch is normally closed.

[0017] With the above structure, the automatic reset limit switch adopts a normally closed roller structure, which has a faster trigger response time and can better cooperate with the rotating front guard rod to trigger the action.

[0018] Compared with existing technologies, the anti-collision device applied to new energy unmanned agricultural machinery has the following advantages:

[0019] 1. The front guard bar, side guard bar, and connecting components work together to connect the front guard bar and side guard bar. The tilt angle of the side guard bar can be flexibly adjusted. In the event of a collision, the special bending and tilting shapes of the two guard bars can effectively disperse the impact force and avoid the concentration of impact force. The U-shaped cross-section structure of the two guard bars, combined with internal ribs, enhances the structural rigidity and prevents collision deformation. The polyurethane buffer layer covering the two guard bars absorbs energy through elastic deformation, reducing the degree of equipment damage and lowering maintenance costs.

[0020] 2. By combining the mounting components, front guard bar, automatic reset rotating assembly, and automatic reset limit switch, the device can be accurately triggered and respond quickly in the event of active detection failure or sudden collision. It can promptly transmit signals to the agricultural machinery's control system and reset the front guard bar when the external force is removed, preparing for the next protection and ensuring the continuous and effective operation of this anti-collision device.

[0021] 3. By setting up installation components, it can be adapted to different models of agricultural machinery frames and provide reliable and stable support for this anti-collision device, ensuring the strength and rigidity of this anti-collision device.

[0022] 4. By combining lidar and ultrasonic radar, the system actively monitors the environment in front of and to the sides of agricultural machinery in real time, detects obstacles in advance and issues warnings, and plans obstacle avoidance paths in conjunction with the control system, thereby reducing the risk of collisions from the source and helping agricultural machinery cope with complex farmland environments (such as mud and high dust), thus improving the safety and intelligence level of agricultural machinery operations. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0024] Figure 2 This is a top view of the structure of this utility model.

[0025] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0026] Figure 4 This is a schematic diagram of the installation components in this utility model.

[0027] Figure 5 This is a schematic diagram of the automatic reset rotating assembly in this utility model.

[0028] Figure 6 This is an exploded structural diagram of the connecting component in this utility model.

[0029] Figure 7 This is a cross-sectional structural diagram of the connecting component in this utility model.

[0030] In the diagram: 1. Mounting assembly; 2. Front guard bar; 3. Side guard bar; 4. Connecting assembly; 5. Automatic reset rotating assembly; 6. Automatic reset type limit switch; 7. Support plate; 8. Frame connecting plate; 9. Support square tube; 10. Mounting bracket; 11. LiDAR mounting bracket; 12. Ultrasonic radar mounting bracket; 13. Limit switch bracket; 14. Rotating support; 15. Rotating frame; 16. Pin; 17. Limiting rod; 18. Torsion spring; 19. Rib plate; 20. Corner connector; 21. Vertical wall one; 22. Vertical wall two; 23. Expansion plate; 24. Conical part; 25. Limiting block; 26. Connecting screw; 27. Nut; 28. Sleeve. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figures 1-7 As shown, the anti-collision device applied to new energy unmanned agricultural machinery includes a mounting component 1, an automatic reset limit switch 6, a lidar, and an ultrasonic radar. The front end of the mounting component 1 is provided with two symmetrical automatic reset rotating components 5. A front guard rod 2 is fixed to the front end of the automatic reset rotating components 5. Both ends of the front guard rod 2 are provided with connecting components 4. The rear end of the connecting components 4 is fixed with a side guard rod 3. The automatic reset limit switch 6 is mounted on the mounting component 1, and the operating head of the automatic reset limit switch 6 abuts against the rear end of the front guard rod 2. The lidar and ultrasonic radar are both mounted on the mounting component 1.

[0033] In this embodiment, during operation, the lidar and ultrasonic radar monitor obstacles in front of and to the sides of the agricultural machinery in real time. The data is transmitted to the agricultural machinery control system to plan an obstacle avoidance path. When an obstacle is detected approaching, a warning signal is issued. If the active detection fails or a sudden collision occurs, causing the front guard bar 2 to be impacted, the front guard bar 2 rotates backward through the automatic reset rotating assembly 5 to absorb the impact. This then triggers the operating head of the automatic reset type limit switch 6 installed on the mounting assembly 1, causing it to be triggered and transmit a signal to the agricultural machinery control system. The control system then controls the equipment to decelerate or stop. At the same time, the connecting assemblies 4 at both ends of the front guard bar 2 drive the side guard bars 3 to jointly protect against side collisions. After the impact force disappears, the automatic reset rotating assembly 5 causes the front guard bar 2 to automatically reset so that it can continue to provide protection.

[0034] Mounting assembly 1 includes a frame connecting plate 8, a mounting bracket 10, a lidar mounting bracket 11, an ultrasonic radar mounting bracket 12, a limit switch bracket 13, and two symmetrically arranged support square tubes 9. The frame connecting plate 8 is vertically arranged and has several mounting holes of different diameters. Two symmetrically arranged vertical support plates 7 are fixed to the rear end of the frame connecting plate 8. The two support square tubes 9 are arranged along the front-rear direction, and their rear ends are fixedly connected to the left and right sides of the front end of the frame connecting plate 8 by flanges and high-strength bolts. The mounting bracket 10 is vertically arranged, and its rear end is fixedly connected to the front end of the two support square tubes 9. The lidar mounting bracket 11 and the ultrasonic radar mounting bracket 12 are fixedly connected to the mounting bracket 10. The limit switch bracket 13 is fixedly connected to one of the support square tubes 9, and the automatic reset type limit switch 6 is fixed to the limit switch bracket 13.

[0035] In this embodiment, the frame connecting plate 8 can be adapted to different models of agricultural machinery frames through mounting holes of different diameters. The support plates 7 on both sides of the rear end enhance stability. The support square tubes 9 on both sides are firmly connected to the front end of the frame connecting plate 8 through flanges and high-strength bolts, providing support for the overall structure. The mounting bracket 10 is fixed to the front end of the support square tube 9. The laser radar mounting bracket 11 and ultrasonic radar mounting bracket 12 installed on it are used to support and fix the laser radar and ultrasonic radar to realize the monitoring of the surrounding environment. The limit switch bracket 13 is fixed on the support square tube 9 and is used to install the automatic reset type limit switch 6. When the front guard bar 2 is hit by a collision and touches the switch operating head, it ensures that the switch is stably installed and transmits signals normally, thereby ensuring the stable operation and functional realization of the entire anti-collision device.

[0036] The automatic reset rotating assembly 5 includes a rotating support 14, a rotating frame 15, a pin 16, a limiting rod 17, and a torsion spring 18. The rotating support 14 is fixedly connected to the front end of the mounting frame 10. The rotating frame 15 is hinged to the front end of the rotating support 14 through the pin 16, and the front end of the rotating frame 15 is fixedly connected to the rear end of the front guard rod 2. The limiting rod 17 is fixed on the rotating support 14 and is located below the rotating frame 15. Under normal conditions, the lower end of the rotating frame 15 abuts against the limiting rod 17. The torsion spring 18 is sleeved on the pin 16, and the two rotating arms of the torsion spring 18 abut against the rotating support 14 and the rotating frame 15, respectively.

[0037] In this embodiment, during operation, the rotating support 14 is fixed to the front end of the mounting frame 10, providing a mounting base for the entire assembly. When impacted, the front guard rod 2 drives the rotating frame 15 to rotate backward around the pin 16. The torsion spring 18 sleeved on the pin 16 is compressed and undergoes elastic deformation, storing elastic potential energy. After the impact force disappears, the torsion spring 18 releases the stored elastic potential energy, and its two rotating arms act on the rotating support 14 and the rotating frame 15 respectively, pushing the rotating frame 15 to drive the front guard rod 2 to automatically reset and return to the initial position in order to cope with the next possible collision. The limiting rod 17 is used to limit the rotation direction of the rotating frame 15, ensuring that the front guard rod 2 and the side guard rod 3 remain in the appropriate position under normal conditions.

[0038] The left and right ends of the front guard rod 2 bend backward and upward, and the rear end of the side guard rod 3 tilts upward away from the mounting component 1. The cross-sections of the front guard rod 2 and the side guard rod 3 are both U-shaped, and several equidistant ribs 19 are fixed inside the front guard rod 2 and the side guard rod 3. A collision trigger block is fixed at the rear end of the front guard rod 2. The rear end of the collision trigger block abuts against the operating head of the length adjustable automatic reset type limit switch 6. Both the front guard rod 2 and the side guard rod 3 are provided with a buffer layer made of polyurethane material.

[0039] In this embodiment, when the front guard rod 2 and the side guard rod 3 are impacted, the special shape design of the left and right ends of the front guard rod 2 bending backward and upward, and the rear end of the side guard rod 3 tilting upward away from the mounting component 1, can effectively disperse the impact force and avoid the concentration of impact force. Its U-shaped cross-section, combined with the internally equidistantly distributed ribs 19, enhances the structural strength and rigidity, preventing deformation and failure during the collision. At the moment of impact, the collision trigger block at the rear end of the front guard rod 2 moves backward and abuts against the operating head of the automatic reset type limit switch 6, triggering the switch to transmit a signal to the equipment control system. At the same time, the buffer layer made of polyurethane material absorbs the collision energy through its own elastic deformation, reducing the degree of damage to the equipment caused by the impact.

[0040] The connecting assembly 4 includes a corner connector 20, a first vertical wall 21, a second vertical wall 22, a tapered part 24, a limiting block 25, a connecting screw 26, a nut 27, and a sleeve 28. The rear end of the corner connector 20 is fixedly connected to the front end of the side guard rod 3. The first vertical wall 21 is fixed to the front end of the corner connector 20. The second vertical wall 22 is fixed to the side end of the front guard rod 2. The first vertical wall 21 and the second vertical wall 22 are parallel. The rear end of the sleeve 28 is fixedly connected to the second vertical wall 22. Several circumferentially distributed expansion plates 23 are fixed to the front end of the first vertical wall 21. The thickness of the expansion plates 23 gradually increases from back to front. The outer diameter of the cylinder formed by several expansion plates 23 is the same as the inner diameter of the sleeve 28. The conical part 24 is located between several expansion plates 23, and the diameter of the conical part 24 gradually increases from back to front. Several circumferentially distributed limiting blocks 25 are fixed on the outer wall of the conical part 24. The number of limiting blocks 25 corresponds to the number of expansion plates 23, and the limiting blocks 25 are located between two adjacent expansion plates 23. The front end of the conical part 24 is fixed with a nut 27. The threaded end of the connecting screw 26 passes through the corner connector 20, the vertical wall 21 and the rear end of the conical part 24 in sequence and is threadedly connected to the nut 27.

[0041] In this embodiment, when it is necessary to connect the front guard rod 2 and the side guard rod 3, the cylinder formed by the expansion piece 23 is inserted into the sleeve 28, and the connecting screw 26 is tightened. During the tightening process, the conical piece 24 moves backward. Since the diameter of the conical piece 24 gradually increases from back to front, its outer wall pushes the circumferentially distributed expansion piece 23 to expand outward. The design of the expansion piece 23 gradually decreasing in thickness from back to front allows it to deform better. When the outer diameter of the expansion piece 23 expands to fit tightly with the inner diameter of the sleeve 28, the first vertical wall 21 and the second vertical wall 22 are firmly connected, thereby firmly connecting the corner connector 20 at the front end of the side guard rod 3 to the side end of the front guard rod 2. The tilt angle of the side guard rod 3 can be adjusted as needed.

[0042] The automatic reset type limit switch 6 adopts a roller type, and the roller of the automatic reset type limit switch 6 abuts against the rear end of the collision trigger block, and the automatic reset type limit switch 6 adopts a normally closed type.

[0043] In this embodiment, the automatic reset limit switch 6 adopts a normally closed roller structure, which has a faster trigger response time and can better cooperate with the rotating front guard rod 2 to trigger the action.

[0044] The working principle of this utility model is as follows: During operation, the laser radar and ultrasonic radar are installed on the laser radar mounting bracket 11 and ultrasonic radar mounting bracket 12 of the mounting assembly 1, respectively, to monitor obstacles in front of and to the sides of the agricultural machinery in real time. The data is transmitted to the control system to plan the obstacle avoidance path, and an early warning is issued when an obstacle approaches. If the active detection fails or a collision occurs, after the front guard bar 2 is impacted, the rotating frame 15 of the automatic reset rotating assembly 5 rotates backward around the pin shaft 16, compressing the torsion spring 18 to store elastic potential energy. At the same time, the collision trigger block at its rear end pushes the roller of the automatic reset type limit switch 6, causing the contact system to disconnect the circuit. The system transmits a collision signal to the control system, which then decelerates and stops the equipment. The side guard rods 3 are connected to the left and right ends of the front guard rod 2 through the expansion plate 23, sleeve 28 and conical piece 24 of the connecting assembly 4, and can be freely adjusted in angle. The special bending and tilting shapes of the front guard rod 2 and the side guard rods 3, combined with the U-shaped cross section and rib plate 19, can disperse the impact force and enhance the structural rigidity. The polyurethane buffer layer absorbs the collision energy. After the collision, the torsion spring 18 releases potential energy to push the rotating frame 15 to drive the front guard rod 2 to reset. The limit rod 17 restricts the rotation angle, so that the anti-collision device returns to the ready-to-work state.

[0045] In summary, by cooperating with the front guard bar 2 and the side guard bar 3 and connecting component 4, the front guard bar 2 and the side guard bar 3 can be connected by the connecting component 4. The tilt angle of the side guard bar 3 can be flexibly adjusted. In the event of a collision, the special bending and tilting shapes of the two can effectively disperse the impact force and avoid the concentration of impact force. The U-shaped cross-section structure of the two, combined with the internal rib plate 19, enhances the structural rigidity and prevents collision deformation. The polyurethane buffer layer covering the two absorbs energy through elastic deformation, reducing the degree of equipment damage and reducing maintenance costs.

[0046] By installing component 1, front guard bar 2, automatic reset rotating component 5 and automatic reset type limit switch 6, it can be accurately triggered and quickly responded when active detection fails or sudden collision occurs, and promptly transmit signals to the agricultural machinery control system. When the external force is removed, the front guard bar 2 is reset to prepare for the next protection, ensuring the continuous and effective operation of this anti-collision device.

[0047] By setting up installation component 1, it can be adapted to different models of agricultural machinery frames and provide reliable and stable support for this anti-collision device, ensuring the strength and rigidity of this anti-collision device;

[0048] By combining lidar and ultrasonic radar, the system proactively monitors the environment in front of and to the sides of agricultural machinery in real time, detects obstacles in advance and issues warnings, and plans obstacle avoidance paths in conjunction with the control system, thereby reducing the risk of collisions from the source. This helps agricultural machinery cope with complex farmland environments (such as mud and high dust levels) and improves the safety and intelligence of agricultural machinery operations.

[0049] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A collision avoidance device for new energy unmanned agricultural machinery, comprising an installation assembly (1), an automatic reset type limit switch (6), a lidar, and an ultrasonic radar, characterized in that, The front end of the mounting assembly (1) is provided with two symmetrical automatic reset rotating assemblies (5). The front end of the automatic reset rotating assembly (5) is fixed with a front guard rod (2). Both ends of the front guard rod (2) are provided with connecting assemblies (4). The rear end of the connecting assembly (4) is fixed with a side guard rod (3). An automatic reset type limit switch (6) is set on the mounting assembly (1), and the operating head of the automatic reset type limit switch (6) abuts against the rear end of the front guard rod (2). Both the laser radar and the ultrasonic radar are set on the mounting assembly (1).

2. The anti-collision device for new energy unmanned agricultural machinery equipment according to claim 1, characterized in that, The mounting assembly (1) includes a frame connecting plate (8), a mounting bracket (10), a laser radar mounting bracket (11), an ultrasonic radar mounting bracket (12), a limit switch bracket (13), and two symmetrically arranged support square tubes (9). The frame connecting plate (8) is vertically arranged and has several mounting holes of different diameters. Two symmetrical vertical support plates (7) are fixed to the rear end of the frame connecting plate (8). The two support square tubes (9) are arranged along the front-rear direction, and the rear ends of the two support square tubes (9) are respectively fixed to the left and right sides of the front end of the frame connecting plate (8) by flanges and high-strength bolts. The mounting bracket (10) is vertically arranged and the rear end of the mounting bracket (10) is fixedly connected to the front end of the two support square tubes (9). The laser radar mounting bracket (11) and the ultrasonic radar mounting bracket (12) are fixedly connected to the mounting bracket (10). The limit switch bracket (13) is fixedly connected to one of the support square tubes (9). The automatic reset type limit switch (6) is fixed to the limit switch bracket (13).

3. The anti-collision device for new energy unmanned agricultural machinery equipment according to claim 2, characterized in that, The automatic reset rotating assembly (5) includes a rotating support (14), a rotating frame (15), a pin (16), a limiting rod (17), and a torsion spring (18). The rotating support (14) is fixedly connected to the front end of the mounting frame (10). The rotating frame (15) is hinged to the front end of the rotating support (14) through the pin (16), and the front end of the rotating frame (15) is fixedly connected to the rear end of the front guard rod (2). The limiting rod (17) is fixed on the rotating support (14) and is located below the rotating frame (15). Under normal conditions, the lower end of the rotating frame (15) abuts against the limiting rod (17). The torsion spring (18) is sleeved on the pin (16), and the two rotating arms of the torsion spring (18) abut against the rotating support (14) and the rotating frame (15) respectively.

4. The anti-collision device for new energy unmanned agricultural machinery equipment according to claim 3, characterized in that, The left and right ends of the front guard rod (2) bend backward and upward, and the rear end of the side guard rod (3) tilts upward away from the mounting component (1). The cross-sections of the front guard rod (2) and the side guard rod (3) are both U-shaped. The interior of the front guard rod (2) and the side guard rod (3) is fixed with several equidistant ribs (19). The rear end of the front guard rod (2) is fixed with a collision trigger block. The rear end of the collision trigger block abuts against the operating head of the length adjustable automatic reset type limit switch (6). The front guard rod (2) and the side guard rod (3) are both provided with a buffer layer made of polyurethane material.

5. The anti-collision device for new energy unmanned agricultural machinery equipment according to claim 4, characterized in that, The connecting assembly (4) includes a corner connector (20), a first vertical wall (21), a second vertical wall (22), a tapered part (24), a limiting block (25), a connecting screw (26), a nut (27), and a sleeve (28). The rear end of the corner connector (20) is fixedly connected to the front end of the side guard rod (3). The first vertical wall (21) is fixed to the front end of the corner connector (20). The second vertical wall (22) is fixed to the side end of the front guard rod (2). The first vertical wall (21) and the second vertical wall (22) are parallel. The rear end of the sleeve (28) is fixedly connected to the second vertical wall (22). The front end of the first vertical wall (21) is fixed with several circumferentially distributed expansion plates (23). The thickness of the expansion plates (23) increases from the rear end. The diameter of the cylinder formed by the expansion plates (23) gradually decreases from front to back, and the outer diameter of the cylinder is the same as the inner diameter of the sleeve (28). The conical part (24) is located between the expansion plates (23), and the diameter of the conical part (24) gradually increases from back to front. Several circumferentially distributed limiting blocks (25) are fixed on the outer wall of the conical part (24). The number of limiting blocks (25) corresponds to the number of expansion plates (23), and the limiting blocks (25) are located between two adjacent expansion plates (23). The front end of the conical part (24) is fixed with a nut (27). The threaded end of the connecting screw (26) passes through the corner connector (20), the first vertical wall (21), and the rear end of the conical part (24) and is threadedly connected to the nut (27).

6. The anti-collision device for new energy unmanned agricultural machinery equipment according to claim 5, characterized in that, The automatic reset type limit switch (6) adopts a roller type, the roller of the automatic reset type limit switch (6) abuts against the rear end of the collision trigger block, and the automatic reset type limit switch (6) adopts a normally closed type.

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