A mower head structure

Abstract

The utility model discloses a mower working head structure, including the working head body, walking mechanism is installed to the working head body front end, and the rear end is equipped with quick -mounting mechanism, and install the mower that is used for executing the mowing operation on the working head body. The mower of the utility model can be connected and replaced with the power assembly of modularization, intelligentization, unmanned design through quick -mounting mechanism, and the cutter head can be adjusted in the lift and has the obstacle avoidance function, and the simple structure is good in universality, can be well adapted to the unmanned intelligent development of future agricultural garden equipment.

Description

Technical Field

[0001] This utility model relates to the field of garden machinery technology, and in particular to a working head structure for a lawnmower. Background Technology

[0002] Gardening operations encompass multiple stages, including sowing, tilling, plant protection, pruning, harvesting, weeding, and snow removal. To meet these diverse operational needs, highly specialized mechanical equipment has been developed in the market. Current lawnmowers, after long-term development, have mature mechanical structures, power systems, and control methods. The working parts and power units of lawnmowers are generally designed as a single unit, making them difficult to separate. Users must purchase a complete lawnmower set when they need to mow, resulting in high costs. However, with the development of intelligent, unmanned, universal, and modular technologies, gardening equipment is gradually moving towards unmanned and modular designs. Currently, the market lacks universal modular lawnmower heads that can be adapted to modular gardening equipment. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a lawnmower working head structure to solve the problems of poor versatility and high operating costs of the existing technology.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A lawnmower working head structure, characterized in that: it includes a working head body, a walking mechanism is installed at the front end of the working head body, a quick-release mechanism is provided at the rear end, and a lawnmower for performing lawn mowing operations is installed on the working head body; wherein, the working head body includes a chassis and a car body mounted on the chassis, the lawnmower includes a blade disc mounted below the chassis, a rotating shaft arranged along the width direction of the chassis and rotatably mounted on the chassis, and lifting linkage mechanisms arranged on opposite sides in the width direction of the chassis; wherein, the lifting linkage mechanism includes a front V-shaped rotating plate and a rear V-shaped rotating plate arranged along the front-rear direction of the chassis, the apex of the front V-shaped rotating plate is fixedly connected to the end of the rotating shaft, the apex of the rear V-shaped rotating plate is rotatably mounted on the chassis, the front side support arms of the front V-shaped rotating plate and the rear V-shaped rotating plate are respectively connected to the blade disc through connecting rods, and the rear side support arms of the front V-shaped rotating plate and the rear V-shaped rotating plate are connected by a linkage rod; It also includes a driving hydraulic cylinder, which is connected to the rotating shaft via a push rod and is used to drive the rotating shaft to rotate around its axis, thereby driving the front V-shaped rotating plate to rotate. The front V-shaped rotating plate drives the rear V-shaped rotating plate to rotate synchronously via a linkage rod. The front V-shaped rotating plate and the rear V-shaped rotating plate drive the cutter head to rise and fall via a connecting rod.

[0005] As an optimization, the walking mechanism includes a front axle mounted on the underside of the chassis near the front end. The middle of the front axle is hinged to the chassis, allowing it to rotate around the hinge point in a vertical plane. Each end of the front axle is provided with a caster wheel. The two ends of the front axle bend diagonally upward and diagonally forward.

[0006] As an optimization, multiple auxiliary support wheels are installed on the front side of the cutter head, with the bottom of the auxiliary support wheels lower than the lower side of the cutter head, and at least two of the multiple auxiliary support wheels correspond to the universal wheels respectively.

[0007] As an optimization, the quick-assembly mechanism includes a first connecting part disposed at the rear end of the working head body, wherein the first connecting part includes a positioning plate disposed at the middle of the rear end of the working head body, and a first connecting beam disposed on both sides of the positioning plate, the positioning plate having a positioning hole, and the first connecting beam having a first connecting hole.

[0008] As an optimization, handles are provided on opposite sides along the width direction on the upper side of the chassis.

[0009] As an optimization, a visual sensor and / or millimeter-wave radar, and / or multiple anti-collision radars distributed along the width of the front of the vehicle body are installed at the front end of the body.

[0010] Compared with the prior art, the present invention has the following advantages: The working head of this utility model can be quickly connected and replaced with the power assembly through a quick-installation mechanism. It has a simple structure, good versatility, and reduces the cost of use. The cutter head can be raised and lowered and has an obstacle avoidance function. It adopts a modular structure, which reduces the cost of use and maintenance in the later stage. Attached Figure Description

[0011] Figure 1 This is the left front isometric side view of the present invention; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 for Figure 2 Left rear isometric side view; Figure 4 This is an overall schematic diagram of the present invention after being connected with a general-purpose unmanned powertrain; In the diagram: 1. Working head body, 2. Chassis, 3. Body shell, 4. Vision sensor and / or millimeter-wave radar, 5. Collision avoidance radar, 6. Front axle, 7. Casters, 8. Bracket, 9. Cutter head, 10. Rotating shaft, 11. Front V-shaped rotating plate, 12. Rear V-shaped rotating plate, 13. Linkage rod, 14. Linkage rod, 15. Hydraulic cylinder, 16. Push rod, 17. Positioning plate, 18. First connecting beam, 19. Positioning hole, 20. Cover, 21. Handle. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0014] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. 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. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] Example: See Figures 1-4A lawnmower working head structure includes a working head body 1, a walking mechanism mounted at the front end of the working head body 1, and a quick-release mechanism at the rear end for connecting to a powertrain. A lawnmower for performing mowing operations is mounted on the working head body 1. The working head body 1 includes a chassis 2 and a vehicle body 3 mounted on the chassis 2. The chassis 2 is a frame structure composed of multiple main beams, and handles 21 are provided on both sides of the width of the chassis 2 to facilitate dragging the vehicle body. A vision sensor and / or millimeter-wave radar 4 are mounted at the front end of the vehicle body 3. In this embodiment, the vision sensor is a monocular camera, and / or multiple anti-collision radars 5 are distributed along the width direction of the front end of the chassis 2. This is mainly because after the working head body 1 is connected to the modular powertrain, the working head body 1 will block part of the front area, thus creating a blind spot. Therefore, the vision sensor or millimeter-wave radar at the front end of the vehicle body 3 is used to collect visual signals in front of the vehicle body, which can play a better role in obstacle recognition and obstacle avoidance.

[0016] The lawnmower includes a blade disc 9 mounted below the chassis 2. In operation, the blade disc is connected to the lawnmower drive mechanism via a splined shaft and can move up and down. A rotating shaft 10 is rotatably mounted on the chassis 2 along its width direction, and lifting linkages 13 are located on opposite sides of the chassis 2 along its width direction. Two blade drive motors are installed in the blade disc 9. The lifting linkages 13 include a front V-shaped rotating plate 11 and a rear V-shaped rotating plate 12 arranged along the front-rear direction of the chassis 2. The apex of the front V-shaped rotating plate 11 is fixedly connected to the end of the rotating shaft 10, and the apex of the rear V-shaped rotating plate 12 is rotatably mounted on the chassis 2. The front support arms are connected to the cutter head 9 via connecting rods 13. The rear support arms of the front V-shaped rotating plate 11 and the rear V-shaped rotating plate 12 are connected via a linkage rod 14. The system also includes a drive hydraulic cylinder 15, which is connected to the rotating shaft 10 via a push rod 16. This drive hydraulic cylinder 15 drives the rotating shaft 10 to rotate around its axis, thereby rotating the front V-shaped rotating plate 11. The front V-shaped rotating plate 11 drives the rear V-shaped rotating plate 12 to rotate synchronously via the linkage rod 14. The front V-shaped rotating plate 11 and the rear V-shaped rotating plate 12 drive the cutter head 9 to rise and fall via the connecting rod 13. Specifically, the power supply lines for the drive motor of the cutter head 9 and the sensors on the working head body 1 are located on the chassis 2 and integrated into a plug at the rear end. When the working head body 1 is connected to the universal unmanned power assembly, the plug connects to the integrated socket on the universal unmanned power assembly to achieve power supply and control. In addition, since the universal wheel 7 has a large diameter and is a certain distance from the cutter head 9, the cutter head 9 may be bumped when the universal wheel 7 crosses obstacles such as gravel. Therefore, an auxiliary support wheel is provided on the front side of the cutter head 9 to provide support, prevent obstacles from hitting the cutter head 9, and improve the vehicle's passability.

[0017] The working head of this invention can be quickly connected and replaced with a modular powertrain via a quick-release mechanism. Its simple structure and good versatility reduce operating costs. The visual sensors and other signal acquisition devices at its front end can compensate for blind spots in the powertrain's field of vision. The anti-collision radar 5 provides excellent collision avoidance capabilities, and the cutter head 9 is height-adjustable and has obstacle avoidance functionality. The modular structure further reduces future usage and maintenance costs. Furthermore, this invention is well-suited to the future development of unmanned and intelligent agricultural and gardening equipment, and better matches unmanned and integrated powertrains.

[0018] The traveling mechanism includes a front axle 6 mounted on the lower front side of the chassis 2. The middle of the front axle 6 is hinged to the chassis 2, allowing it to rotate around the hinge point in a vertical plane, forming a suspension structure. A universal wheel 7 is mounted on each end of the front axle 6. The ends of the front axle 6 bend diagonally upwards to reduce the height of the middle section of the front axle 6, thereby reducing the height of the chassis 2 and making the working head body 1 lower and more compact. Simultaneously, the universal wheel 7 bends diagonally forward, and correspondingly, it has a bracket 8 with its upper end tilted forward. This makes the entire working head body 1 shorter and more compact. Because the bracket 8 of the universal wheel 7 is tilted forward, the rear of the universal wheel 7 has a larger range of motion when rotating. Therefore, the diagonally forward and upward bending structure of the two ends of the front axle 6 effectively allows for the rear range of motion of the universal wheel 7, ensuring smooth steering of the universal wheel 7 while improving structural compactness.

[0019] In this embodiment, the quick-assembly mechanism includes a first connecting portion disposed at the rear end of the working head body 1. The first connecting portion includes a positioning plate 17 disposed at the middle of the rear end of the working head body 1, and first connecting beams 18 disposed on both sides of the positioning plate 17. The positioning plate 17 has positioning holes 19, and the first connecting beams 18 have multiple first connecting holes. Correspondingly, the adapted universal unmanned powertrain needs to be provided with a corresponding second connecting portion. The second connecting portion on the powertrain needs to include a positioning beam extending forward from the middle of the front end of the universal unmanned powertrain, and second connecting beams disposed on both sides of the positioning beam. The second connecting beams correspond to the first connecting beams 18 of the working head body 1 and can be sleeved, overlapped, or docked with the first connecting beams 18 of the working head body 1. Specifically, in this embodiment, the first connecting beam 18 is made of channel steel with its opening facing downwards, and a first connecting hole is provided on the web of the first connecting beam 18. Correspondingly, a second connecting hole is provided on the second connecting beam. The first connecting beam 18 and the second connecting beam are connected by bolts or pins passing through the first and second connecting holes. Meanwhile, in this embodiment, the positioning plate 17 is inclined in the vertical direction, and the positioning hole 19 is a rectangular hole. During the connection process, the inclined positioning plate 17 can play a guiding role, achieving rapid positioning and rapid connection. Specifically, a car body 3 is provided on the chassis 2, and an openable cover 20 is provided on the car body 3 to facilitate the operation and maintenance of the quick-assembly mechanism.

[0020] In summary, this utility model improves the adaptability to unmanned garden robots through modular design. Its compact and reasonable structural design can be well matched with the autonomous operation of automated and unmanned garden robots, adapting to the unmanned development of agriculture.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A lawnmower working head structure, characterized in that: The device includes a working head body, a walking mechanism mounted at the front end of the working head body, a quick-release mechanism at the rear end, and a lawnmower for performing mowing operations mounted on the working head body. The working head body includes a chassis and a vehicle body mounted on the chassis. The lawnmower includes a blade disc mounted below the chassis, a rotating shaft rotatably mounted on the chassis along its width, and lifting linkage mechanisms on opposite sides of the chassis along its width. The lifting linkage mechanisms include a front V-shaped rotating plate and a rear V-shaped rotating plate arranged along the front-rear direction of the chassis. The apex of the front V-shaped rotating plate is fixedly connected to the end of the rotating shaft, and the apex of the rear V-shaped rotating plate is rotatably mounted on the chassis. The front support arms of the front and rear V-shaped rotating plates are connected to the blade disc via connecting rods, and the rear support arms of the front and rear V-shaped rotating plates are connected by a linkage rod. It also includes a driving hydraulic cylinder, which is connected to the rotating shaft via a push rod and is used to drive the rotating shaft to rotate around its axis, thereby driving the front V-shaped rotating plate to rotate. The front V-shaped rotating plate drives the rear V-shaped rotating plate to rotate synchronously via a linkage rod. The front V-shaped rotating plate and the rear V-shaped rotating plate drive the cutter head to rise and fall via a connecting rod.

2. The lawnmower working head structure according to claim 1, characterized in that: The walking mechanism includes a front axle mounted on the underside of the chassis near the front end. The middle part of the front axle is hinged to the chassis, allowing it to rotate around the hinge point in a vertical plane. Each end of the front axle is provided with a caster wheel. The two ends of the front axle bend diagonally upward and diagonally forward.

3. The lawnmower working head structure according to claim 2, characterized in that: Multiple auxiliary support wheels are installed on the front side of the cutter head. The bottom of the auxiliary support wheels is lower than the lower side of the cutter head, and at least two of the multiple auxiliary support wheels correspond to the universal wheels respectively.

4. The lawnmower working head structure according to claim 1, characterized in that: The quick-assembly mechanism includes a first connecting part disposed at the rear end of the working head body. The first connecting part includes a positioning plate disposed at the middle of the rear end of the working head body and first connecting beams disposed on both sides of the positioning plate. The positioning plate has a positioning hole and the first connecting beam has a first connecting hole.

5. The lawnmower working head structure according to claim 1, characterized in that: Handles are provided on opposite sides of the upper side of the chassis along the width direction.

6. The lawnmower working head structure according to claim 1, characterized in that: A visual sensor and / or millimeter-wave radar are installed at the front of the vehicle body, and / or multiple collision avoidance radars are distributed along the width of the front of the vehicle body.

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