Mowing height adjusting structure of mower

Abstract

The utility model relates to the technical field of mowing machines, in particular to a mowing height adjusting structure of a mowing machine, which comprises a walking mechanism, a plurality of vertical lead screws are arranged on the walking mechanism in a rotating structure mode, nuts are arranged on the vertical lead screws in a thread meshing structure mode, and a chassis is arranged on the inner sides of the nuts in a fixed structure mode. The chassis is provided with a cutting knife assembly and further provided with a power piece for driving the vertical lead screw to rotate, and the power piece is connected with the vertical lead screw. The chassis and the walking mechanism are connected through the lifting structure, the requirement for trimming lawns and vegetation with different heights can be met, meanwhile, the cutting knife assembly is directly installed on the chassis, the structure is simple, and the cutting knife assembly is convenient to maintain.

Description

Technical Field:

[0001] This application relates to the technical field of lawn mowers, and particularly to a lawn mower cutting height adjustment structure. Background Art:

[0002] A lawn mower, also known as a weeding machine, grass shearer, lawn trimmer, etc., is a mechanical tool used for trimming lawns, vegetation, etc. It consists of a cutter head, an engine, walking wheels, a walking mechanism, blades, a handrail, and a control part.

[0003] The Chinese invention patent application with the application number 202311212966.7 - Lawn Mower includes: a cutter assembly, including an installation cylinder body and a cutter structure installed at one end of the installation cylinder body; a lifting mechanism connected to the installation cylinder body to drive the cutter assembly to lift; at least two groups of guiding and limiting structures, the two groups of guiding and limiting structures are spaced apart along the lifting direction of the cutter assembly, and each group of guiding and limiting structures includes at least two roller assemblies, and the at least two roller assemblies are circumferentially spaced apart along the installation cylinder body and are in clearance fit with the installation cylinder body to guide and limit the installation cylinder body. The lawn mower can guide and limit the installation cylinder body through at least two groups of guiding and limiting structures, and the at least two roller assemblies of each group of guiding and limiting structures are circumferentially spaced apart along the installation cylinder body and are in clearance fit with the installation cylinder body, so as to guide and limit the cutter assembly and the lifting mechanism, thereby simplifying the structure of the lawn mower, reducing the manufacturing cost of the lawn mower, and improving the smoothness of the movement of the cutter assembly. In addition, it is also beneficial to the miniaturized design of the lawn mower.

[0004] However, the cutter structure of this patent application is arranged inside the installation cylinder body, with a relatively complex structure. If a failure occurs, it is difficult to repair. Utility Model Content:

[0005] To solve the above - mentioned technical problems, the present utility model provides a lawn mower cutting height adjustment structure, and the technical problem to be solved is: the structure is complex, and if the cutter structure fails, it is difficult to repair. The technical solution adopted by the present utility model to solve the above - mentioned technical problems is as follows:

[0006] A lawn mower cutting height adjustment structure includes:

[0007] A walking mechanism;

[0008] Vertical lead screws, a preset number of vertical lead screws are connected to the walking mechanism in a rotational structure manner;

[0009] Nuts, the nuts are meshed with the vertical lead screws through a threaded structure;

[0010] A chassis, the chassis is connected to the nuts in a fixed structure manner;

[0011] A cutter assembly, the cutter assembly is connected to the chassis;

[0012] A power component, which is connected to the vertical lead screw to drive the vertical lead screw to rotate.

[0013] Furthermore, the traveling mechanism includes symmetrically arranged chassis, and a crawler traveling mechanism is sleeved outside the chassis in a rotational structure manner.

[0014] Furthermore, mounting plates are arranged on the inner sides of both chassis in a fixed structure manner, a power component is arranged on the inner side of the mounting plate in a fixed structure manner, the power component is a reduction motor, and a double-pitch sprocket is fixedly arranged on the output shaft of the reduction motor;

[0015] The number of vertical lead screws is four, and they are arranged in pairs on the mounting plates on the same side. Bearing seats are arranged on the inner side of the mounting plate in a fixed structure manner, the bearing seats are sleeved outside both ends of the vertical lead screw, a driven sprocket is sleeved on the upper end of the vertical lead screw in a fixed structure manner, and the driven sprocket is connected to the double-pitch sprocket through a chain.

[0016] Furthermore, the cutter assembly includes a T-series steering box, and a cutter head is arranged on the output shaft of the T-series steering box passing through the chassis in a fixed structure manner. Furthermore, a support member is arranged on the lower end face of the chassis in a fixed structure manner, and the lower end of the support member extends below the cutter head. Furthermore, the support member is arranged on the chassis on the left and right sides of the cutter head.

[0017] The beneficial effects of the present utility model are: connecting the chassis and the traveling mechanism through a lifting structure can not only meet the requirements for trimming lawns and vegetation at different heights, but also, the cutter assembly is directly installed on the chassis, with a simple structure and convenient maintenance of the cutter assembly.

[0018] By arranging the support member to protect the cutter head, it can avoid cutting damage caused by the too low height of the cutter head and improve the service life. Description of the drawings:

[0019] Figure 1 It is the front view structural schematic diagram of the present utility model.

[0020] Figure 2 It is the partial structural schematic diagram of the present utility model.

[0021] In the figure:

[0022] 1. Traveling mechanism, 2. Vertical lead screw, 3. Nut, 4. Chassis, 5. Support member, 6. Power component, 7. Mounting plate, 8. Double-pitch sprocket, 9. Driven sprocket, 10. T-series steering box, 11. Cutter head, 12. Bearing seat. Specific embodiments:

[0023] To make the purpose, technical solution and advantages of the present utility model more clear, the present utility model will now be further described in detail with reference to the accompanying drawings and the following embodiments, so that the public can better master the implementation method of the present utility model. The specific implementation scheme of the present utility model is as follows:

[0024] A lawn mower mowing height adjustment structure includes a traveling mechanism 1. The traveling mechanism is provided with a plurality of vertical lead screws 2 in a rotational structure manner. The vertical lead screw 2 is provided with a nut 3 through a threaded engagement structure manner. The inner side of the nut 3 is provided with a chassis 4 in a fixed structure manner. The chassis 4 is provided with a cutter assembly. A power member 6 for driving the vertical lead screw 2 to rotate is also provided. The power member 6 is connected to the vertical lead screw 2. Connecting the chassis and the traveling mechanism through a lifting structure can not only meet the requirements for trimming lawns and vegetation at different heights. At the same time, the cutter assembly is directly installed on the chassis, with a simple structure and convenient maintenance of the cutter assembly.

[0025] Specifically, the traveling mechanism 1 includes symmetrically arranged chassis frames. The outside of the chassis frames is sleeved with a crawler traveling mechanism in a rotational structure manner. By setting such a structure, the passability of the cutter is improved to adapt to different terrains.

[0026] It should be noted that mounting plates 7 are provided on the inner sides of both chassis frames through a fixed structure manner. A power member 6 is provided on the inner side of the mounting plate 7 through a fixed structure manner. The power member 6 is a reduction motor. The output shaft of the reduction motor is fixedly provided with a double-pitch sprocket 8. The number of vertical lead screws 2 is four, and two are set as a group on the same side of the mounting plate 7. Bearing seats 12 are provided on the inner side of the mounting plate 7 through a fixed structure manner. The bearing seats 12 are sleeved on the outer parts of both ends of the vertical lead screw 2. The upper end of the vertical lead screw 2 is sleeved with a driven sprocket 9 through a fixed structure manner. The driven sprocket 9 is connected to the double-pitch sprocket 8 through a chain. The lead screws on the same side are controlled by one reduction motor, reducing the cost.

[0027] It should be elaborated that the cutter assembly includes a T-series steering box 10. The output shaft of the T-series steering box 10 passes through the chassis 4 and is provided with a cutter head 11 through a fixed structure manner. The input shaft of the T-series steering box 10 is connected to a power source, such as a motor or a diesel engine. In another embodiment, a support member 5 is provided on the lower end surface of the chassis 4 through a fixed structure manner. The lower end of the support member 5 extends below the cutter head 11. The support member 5 is provided on the chassis 4 on the left and right sides of the cutter head. Protecting the cutter head by setting the support member can avoid cutting damage caused by the too low height of the cutter head and improve the service life. The working principle and working process of the present utility model are as follows:

[0028] Adjust the distance of the cutter head reaching the ground according to the requirements of the trimming height of the lawn and vegetation. Start the reduction motor 6, and the reduction motor 6 drives the double-pitch sprocket 8 to rotate. The double-pitch sprocket 8 drives the driven sprocket 9 to rotate through the chain, and the driven sprocket 9 drives the vertical lead screw 2 to rotate. Then, the chassis 4 and the cutter assembly are driven to descend vertically through the nut 3. After reaching the predetermined position, stop, and start the cutter assembly to perform the mowing work.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Although the present invention is described based on a limited number of embodiments, those skilled in the art in this technical field should understand that within the scope of the present invention thus described, other embodiments can be envisioned.

Claims

1. A lawn mower mowing height adjustment structure, characterized in that: include: Walking mechanism (1); Vertical screws (2), a preset number of vertical screws (2) are connected to the walking mechanism (1) in a rotating structure; A nut (3), the nut (3) is meshed with the vertical lead screw (2) via a thread structure; A chassis (4), the chassis (4) and the nut (3) are connected in a fixed structure manner; A cutting knife assembly, the cutting knife assembly is connected to the chassis (4); A power member (6) is connected to the vertical lead screw (2) to drive the vertical lead screw (2) to rotate.

2. The lawn mower mowing height adjustment structure according to claim 1, characterized in that: The walking mechanism (1) comprises a symmetrically arranged underframe, and a crawler walking mechanism is sleeved on the outside of the underframe in a rotating structure.

3. The lawn mower mowing height adjustment structure according to claim 1, characterized in that: The inner sides of the two base frames are both provided with mounting plates (7) in a fixed structural manner, the inner sides of the mounting plates (7) are provided with power components (6) in a fixed structural manner, the power components (6) are reduction motors, and the output shafts of the reduction motors are fixedly provided with double-pitch sprockets (8); There are four vertical lead screws (2), which are arranged in groups of two on the same side of the mounting plate (7). A bearing seat (12) is arranged on the inner side of the mounting plate (7) in a fixed structure manner. The bearing seat (12) is sleeved on the outside of both ends of the vertical lead screw (2). A driven sprocket (9) is sleeved on the upper end of the vertical lead screw (2) in a fixed structure manner. The driven sprocket (9) is connected to the double-pitch sprocket (8) through a chain.

4. The lawn mower mowing height adjustment structure according to claim 1, characterized in that: The cutter assembly comprises a T series steering box (10), and the output shaft of the T series steering box (10) passes through a chassis (4) and is provided with a cutter head (11) in a fixed structure manner.

5. The lawn mower mowing height adjustment structure according to claim 1, characterized in that: A support member (5) is arranged on the lower end surface of the chassis (4) in a fixed structure manner, and the lower end of the support member (5) extends to below the cutter head (11).

6. The lawn mower mowing height adjustment structure according to claim 1, characterized in that: The support member (5) is arranged on the chassis (4) on the left and right sides of the cutter head.

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