An automatic obstacle-avoiding trimming device

Abstract

This utility model discloses an automatic obstacle avoidance mowing device, belonging to the technical field of lawn mowing equipment. It includes a connecting frame, a first swing frame, a second swing frame, a first trimming head, and a second trimming head. A horizontal mounting component is provided at the lower part of the connecting frame. The first swing frame is horizontally positioned and one end is rotatably connected to the end of the horizontal mounting component, allowing for automatic reset. The second swing frame is also horizontally positioned and one end is rotatably connected to the first swing frame, allowing for automatic reset. The first and second swing frames form an angle. A first trimming head is located at the end of the first swing frame, and a second trimming head is located at the end of the second swing frame. Both the first and second trimming heads include a cylindrical outer shell and a trimming blade. The trimming blade is rotatably mounted within the cylindrical outer shell via a rotating shaft. The outer shells of the first and second trimming heads are connected. This invention solves the technical problems of incomplete or inefficient mowing in traditional mowing methods and equipment.

Description

Technical Field

[0001] This utility model relates to the field of lawn mowing equipment technology, and in particular to an automatic obstacle avoidance mowing device. Background Technology

[0002] Roadside slopes and median strips often contain fixed columnar objects such as guardrail posts, concrete road posts, signposts, and tree trunks, which inevitably create obstacles during trimming. Two conventional methods exist for obstacle avoidance and trimming: 1. Manual trimming: A person carries a trimmer around the obstacle, which is inefficient and prone to damage from collisions with obstacles, potentially injuring the trimmer or tree trunks. 2. Sensor-based mechanical avoidance: When a sensor on the trimmer head touches an obstacle, the trimmer head retracts to avoid it, and after passing the obstacle, the sensor springs back, automatically returning the trimmer head to its original position. However, this method leaves some weeds around the obstacle, requiring further manual trimming. Therefore, it is necessary to invent a trimming device that automatically avoids obstacles to solve these problems. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic obstacle avoidance trimming device to address the above-mentioned problems, thereby solving the technical problems of incomplete or inefficient trimming in traditional trimming methods and equipment.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] An automatic obstacle avoidance trimming device includes a connecting frame, a first swing frame, a second swing frame, a first trimming head, and a second trimming head. A horizontal mounting member is provided at the lower part of the connecting frame. The first swing frame is horizontally positioned and one end is rotatably connected to the end of the horizontal mounting member, allowing for automatic reset. The second swing frame is horizontally positioned and one end is rotatably connected to the first swing frame, allowing for automatic reset. The first and second swing frames form an angle. The first trimming head is located at the end of the first swing frame, and the second trimming head is located at the end of the second swing frame. Both the first and second trimming heads include a cylindrical outer shell with a downward opening, a trimming blade, and a motor. The trimming blade is rotatably mounted within the cylindrical outer shell via a rotating shaft. The outer shells of the first and second trimming heads are connected. The output shaft of the motor drives the corresponding trimming blade to rotate.

[0006] Furthermore, the first swing frame is automatically reset by a first reset device, which includes a connecting shaft, a connecting plate, a pneumatic telescopic rod, and two first limiting blocks. The connecting shaft is rotatably connected to the transverse mounting member, the first swing frame is fixedly connected to the lower part of the connecting shaft, and the lower part of the connecting plate is fixedly connected to the upper part of the connecting shaft. A first protruding end is provided on the outer periphery of the connecting plate, one end of the pneumatic telescopic rod is hinged to the first protruding end, and the other end is connected to the transverse mounting member. The first limiting blocks are installed on the transverse mounting member, and the end of the first protruding end can abut against the first limiting block.

[0007] Furthermore, the first reset device also includes a first buffer, which is mounted on the transverse mounting member, and the connecting plate has a second protruding end on its outer periphery, which can abut against the first buffer.

[0008] Furthermore, the second swing frame is automatically reset by the second reset device, which includes a spring and a second limiting block. One end of the spring is connected to the first swing frame and the other end is connected to the second swing frame. The second limiting block is provided between the first swing frame and the second swing frame. The spring pulls the first swing frame and the second swing frame back to the position that abuts against the limiting block.

[0009] Furthermore, a guide plate is provided in the middle of the first swing frame and on the side facing the second swing frame, and a guide concave arc is provided on one side of the guide plate.

[0010] Furthermore, the guide plate is integrally formed with the second limiting block, and a second buffer is provided on the guide plate, which can abut against the second buffer.

[0011] Furthermore, one end of the lateral mounting component is connected to the connecting frame via a swing hydraulic cylinder.

[0012] Furthermore, the first trimmer head and the second trimmer head have the same structure. The first trimmer head is provided with a plurality of trimmer blades, which are arranged alternately and staggered.

[0013] Furthermore, a retracting blade and several fixed blades are provided between adjacent trimming blades. The retracting blade is arranged in an arc shape and is coaxially arranged with the trimming blade. The fixed blades are arranged on the inner wall of the outer casing, and several fixed blades are arranged alternately.

[0014] Furthermore, the outer casing is also provided with a suction port, which can be connected to a negative pressure collection pipe.

[0015] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows:

[0016] 1. The automatic reset rotating connection design of the first and second swing frames in this utility model enables the trimming head to automatically avoid columnar obstacles. This automatic obstacle avoidance function greatly improves trimming efficiency, avoiding the low efficiency of manual trimming and the damage caused by the trimming machine colliding with obstacles. It solves the technical problems of incomplete or inefficient trimming in traditional trimming methods and equipment.

[0017] 2. By incorporating a first buffer in the first reset device and a second buffer in the second reset device, this utility model effectively buffers the impact force on the swing frame during obstacle avoidance and reset, reduces wear on mechanical parts, and improves the stability and service life of the device. Simultaneously, it also helps reduce noise generated by collisions during trimming, providing operators with a safer and more comfortable working environment.

[0018] 3. By incorporating a swing hydraulic cylinder, this utility model allows the device to be folded up when not in use, reducing its space occupation on the side of the vehicle.

[0019] 4. This utility model features a gathering blade that can gather weeds together. Through the combined action of multiple blades, including a swing blade and a stationary blade, the weeds are broken into smaller pieces. A suction outlet, which can be connected to a negative pressure collection pipe, collects the broken-up weeds, reducing airborne pollution. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the entire utility model;

[0021] Figure 2 This is a three-dimensional view of part of the structure of this utility model;

[0022] Figure 3 This is a three-dimensional view of the internal structure of the first trimmer head of this utility model.

[0023] In the attached diagram, 1-connecting frame, 2-first swing frame, 3-second swing frame, 4-first trimming head, 5-second trimming head, 6-first reset device, 7-second reset device, 11-lateral mounting component, 12-swing hydraulic cylinder, 21-guide plate, 22-guide concave arc, 41-outer shell, 42-trimming blade, 43-motor, 44-retracting blade, 45-fixed blade, 46-suction outlet, 47-rotating shaft, 61-connecting shaft, 62-connecting plate, 63-pneumatic telescopic rod, 64-first limiting block, 65-first buffer, 71-spring, 72-second limiting block, 73-second buffer. Detailed Implementation

[0024] The specific implementation of the utility model will be further described below with reference to the accompanying drawings.

[0025] In the description of this utility model, it should be understood that the terms "center", "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Please see Figures 1 to 3 An automatic obstacle avoidance trimming device includes a connecting frame 1, a first swing frame 2, a second swing frame 3, a first trimming head 4, and a second trimming head 5. A horizontal mounting member 11 is provided at the lower part of the connecting frame 1. The first swing frame 2 is horizontally arranged and one end is rotatably connected to the end of the horizontal mounting member 11 in an automatically reset manner. The second swing frame 3 is horizontally arranged and one end is rotatably connected to the first swing frame 2 in an automatically reset manner. The first swing frame 2 and the second swing frame 3 form an angle. The first trimming head 4 is provided at the end of the first swing frame 2, and the second trimming head 5 is provided at the end of the second swing frame 3. The first trimming head 4 and the second trimming head 5 each include a cylindrical outer shell 41 with a lower opening, a trimming blade 42, and a motor 43. The trimming blade 42 is rotatably mounted in the cylindrical outer shell 41 through a rotating shaft 47. The outer shell 41 of the first trimming head 4 and the outer shell 41 of the second trimming head 5 are connected. The output shaft of the motor 43 drives the corresponding trimming blade 42 to rotate.

[0029] In this embodiment, the first swing frame 2 is automatically reset by the first reset device 6. The first reset device 6 includes a connecting shaft 61, a connecting plate 62, a pneumatic telescopic rod 63, and two first limiting blocks 64. The connecting shaft 61 is rotatably connected to the transverse mounting member 11, the first swing frame 2 is fixedly connected to the lower part of the connecting shaft 61, and the lower part of the connecting plate 62 is fixedly connected to the upper part of the connecting shaft 61. The connecting plate 62 has a first protruding end on its outer periphery. One end of the pneumatic telescopic rod 63 is hinged to the first protruding end, and the other end is connected to the transverse mounting member 11. The first limiting blocks 64 are mounted on the transverse mounting member 11, and the first protruding end can abut against the first limiting block 64. In addition, the first reset device 6 also includes a first buffer 65, which is mounted on the transverse mounting member 11. The connecting plate 62 has a second protruding end on its outer periphery, and the second protruding end can abut against the first buffer 65.

[0030] In this embodiment, the second swing frame 3 is automatically reset by the second reset device 7. The second reset device 7 includes a spring 71 and a second limiting block 72. One end of the spring 71 is connected to the first swing frame 2, and the other end is connected to the second swing frame 3. The second limiting block 72 is provided between the first swing frame 2 and the second swing frame 3. The spring 71 pulls the first swing frame 2 and the second swing frame 3 back to the position abutting against the limiting device. In addition, a guide plate 21 is provided in the middle of the first swing frame 2 and on the side facing the second swing frame 3. A guide concave arc 22 is provided on one side of the guide plate 21. The guide plate 21 is integrally formed with the second limiting block 72. A second buffer 73 is provided on the guide plate 21, and the second swing frame 3 can abut against the second buffer 73.

[0031] In this embodiment, one end of the transverse mounting member 11 is connected to the connecting frame 1 via a swing hydraulic cylinder 12. By providing the swing hydraulic cylinder 12, the device can be folded up when not in use, reducing the space occupied on the side of the vehicle body and facilitating the passage of work vehicles.

[0032] In this embodiment, the first trimmer head 4 and the second trimmer head 5 have the same structure. The first trimmer head 4 is provided with a plurality of trimmer blades 42, which are arranged alternately and staggered.

[0033] In this embodiment, a gathering blade 44 and several fixed blades 45 are also provided between adjacent pruning blades 42. The gathering blade 44 is arc-shaped and coaxially arranged with the pruning blade 42; the fixed blades 45 are disposed on the inner wall of the outer casing 41, and several fixed blades 45 are arranged alternately. Specifically, the end of the pruning blade 42 is Y-shaped. The outer casing 41 is also provided with a suction outlet 46, which can be connected to a negative pressure collection pipe. By providing the gathering blade 44, weeds can be gathered, and through the action of multiple blades of the pruning blades and fixed blades 45, the weeds are broken and fined. By providing the suction outlet 46, which can be connected to the negative pressure collection pipe, the broken weeds are collected, reducing airborne pollution.

[0034] For details on its working principle, please refer to the following:

[0035] 1. The device is installed on the joint of the mobile work vehicle via the connecting frame 1. The horizontal mounting part 11 is parallel to the front and rear direction of the vehicle body by the swing hydraulic cylinder 12, so that the first swing frame 2, the second swing frame 3, the first trimming head 4 and the second trimming head 5 are located in the front direction of the vehicle body.

[0036] 2. The horizontal mounting component 11 is horizontally swung out by the swing hydraulic cylinder 12, so that the horizontal mounting component 11 is approximately perpendicular to the roadside edge, and the first swing frame 2, the second swing frame 3, the first trimming head 4 and the second trimming head 5 can be along the edge.

[0037] 3. Start the operation. Both the first trimming head 4 and the second trimming head 5 are driven by the motor 43 to rotate the shaft 47. At the same time, the trimming blade 42 and the gathering blade 44 also rotate. The gathering blade 44 can push weeds and other items to the inner wall of the outer shell 41 through the arc edge. Through the combined action of the trimming blade 42 and the fixed blade 45, weeds and other items are broken into multiple segments, which makes it easy for the negative pressure collection device to suck them out from the suction port 46.

[0038] 4. When there is a cylindrical obstacle, the vehicle body aligns the contact parts of the first trimming head 4 and the second trimming head 5 with the cylindrical obstacle and continues to move forward. The cylindrical obstacle causes the first swing frame 2 and the second swing frame 3 to swing relative to each other. After the first trimming head 4 and the second trimming head 5 separate, the cylindrical obstacle can enter between the first swing frame 2 and the second swing frame 3. The cylindrical obstacle contacts and presses against the guide concave arc 22, causing the first swing frame 2 and the second swing frame 3 to swing backward relative to the transverse mounting member 11. Until the transverse mounting member 11 passes the cylindrical obstacle, the cylindrical obstacle can once again disengage from between the first trimming head 4 and the second trimming head 5. The first reset device 6 and the second reset device 7 automatically reset the first swing frame 2 and the second swing frame 3. Thus, the passage of one cylindrical obstacle is completed and the trimming is finished.

[0039] The above description is a detailed description of the preferred embodiments of the present utility model. However, the embodiments are not intended to limit the scope of the patent application of the present utility model. All equivalent changes or modifications made under the technical spirit of the present utility model should fall within the patent scope covered by the present utility model.

Claims

1. An automatic obstacle-avoiding trimming device, characterized in that: The device includes a connecting frame, a first swing frame, a second swing frame, a first trimming head, and a second trimming head. A horizontal mounting component is provided at the lower part of the connecting frame. The first swing frame is horizontally positioned and one end is rotatably connected to the end of the horizontal mounting component, allowing for automatic reset. The second swing frame is horizontally positioned and one end is rotatably connected to the first swing frame, allowing for automatic reset. The first and second swing frames form an angle. The first trimming head is located at the end of the first swing frame, and the second trimming head is located at the end of the second swing frame. Both the first and second trimming heads include a cylindrical outer shell with a lower opening, a trimming blade, and a motor. The trimming blade is rotatably mounted within the cylindrical outer shell via a rotating shaft. The outer shells of the first and second trimming heads are connected. The output shaft of the motor drives the corresponding trimming blade to rotate.

2. The automatic obstacle avoidance trimming device according to claim 1, wherein: The first swing frame is automatically reset by a first reset device, which includes a connecting shaft, a connecting plate, a pneumatic telescopic rod, and two first limiting blocks. The connecting shaft is rotatably connected to the transverse mounting member, the first swing frame is fixedly connected to the lower part of the connecting shaft, and the lower part of the connecting plate is fixedly connected to the upper part of the connecting shaft. The connecting plate has a first protruding end on its outer periphery. One end of the pneumatic telescopic rod is hinged to the first protruding end, and the other end is connected to the transverse mounting member. The first limiting blocks are mounted on the transverse mounting member, and the first protruding end can abut against the first limiting block.

3. An automatic obstacle avoidance trimming device according to claim 2, wherein: The first reset device further includes a first buffer, which is mounted on the transverse mounting member. The connecting plate has a second protruding end on its outer periphery, which can abut against the first buffer.

4. The automatic obstacle avoidance trimming device of claim 1, wherein: The second swing frame is automatically reset by the second reset device, which includes a spring and a second limiting block. One end of the spring is connected to the first swing frame and the other end is connected to the second swing frame. The second limiting block is provided between the first swing frame and the second swing frame. The spring pulls the first swing frame and the second swing frame back to the position that abuts against the limiting block.

5. An automatic obstacle avoidance trimming device according to claim 4, wherein: A guide plate is provided in the middle of the first swing frame and on the side facing the second swing frame, and a guide concave arc is provided on one side of the guide plate.

6. An automatic obstacle avoidance trimming device according to claim 5, wherein: The guide plate is integrally formed with the second limiting block, and a second buffer is provided on the guide plate. The second swing frame can abut against the second buffer.

7. The automatic obstacle avoidance trimming device of claim 1, wherein: One end of the lateral mounting component is connected to the connecting frame via a swing hydraulic cylinder.

8. The automatic obstacle avoidance trimming device of claim 1, wherein: The first trimmer head and the second trimmer head have the same structure. The first trimmer head is provided with a plurality of trimmer blades, which are arranged alternately and staggered.

9. An automatic obstacle avoidance trimming device according to claim 8, wherein: Between adjacent trimming blades, there are also gathering blades and several fixed blades. The gathering blades are arranged in an arc shape and are coaxial with the trimming blades. The fixed blades are arranged on the inner wall of the outer casing, and several fixed blades are arranged alternately.

10. An automatic obstacle avoidance trimming device according to claim 9, wherein: The outer casing is also provided with a suction port, which can be connected to a negative pressure collection pipe.

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