Lawn mower with blade convenient to replace

Abstract

The lawn mower comprises an installation base, moving wheels, a handrail, a connecting plate and a blade body, the moving wheels are fixed to the installation base in pairs, the handrail is fixed to the installation base and used for controlling the moving direction of the moving wheels, and the connecting plate is fixed to the installation base and used for installing the blade body. A dismounting mechanism used for conveniently replacing the blade body is fixed to the connecting plate, through cooperation of a mounting cover, an inserting rod and a threaded rod, the blade body replacing process becomes simple and rapid, meanwhile, the mounting cover and a protective pad are matched to clamp and fix the blade body, meanwhile, the inserting rod conducts positioning and auxiliary fixing on the blade body, and the blade body is convenient to replace. The blade replacement work can be rapidly completed only by rotating the rotating shaft, the blade replacement efficiency is greatly improved, the shutdown maintenance time of equipment is shortened, the effect of convenient replacement is achieved, and the situation that a worker needs to carry various professional tools for operation is avoided.

Description

Technical Field

[0001] The utility model relates to the field of lawn mowers, in particular to a lawn mower that is convenient for replacing blades. Background Art

[0002] As an important device for maintaining the lawn landscape and keeping the lawn healthy, the installation method and structure of the blade of a lawn mower have a crucial impact on the performance, use safety, and maintenance convenience of the device.

[0003] In the traditional installation method of lawn mower blades, bolt and nut fastening connections are mostly used. During the installation process, users need to use tools such as wrenches to tighten multiple bolts and nuts. The installation process is not only cumbersome and time-consuming, but also has certain requirements for the skills and strength of the operator. In addition, due to the problems of rust and wear that are prone to occur in bolts and nuts during long-term use, it becomes more difficult to disassemble and replace the blades, increasing the maintenance cost and time of the device.

[0004] Therefore, a lawn mower that is convenient for replacing blades is proposed. Content of the Utility Model

[0005] In view of the above problems, the utility model provides a lawn mower that is convenient for replacing blades to solve the problems raised in the above background art.

[0006] The technical solution of the utility model is as follows:

[0007] A lawn mower that is convenient for replacing blades, including a mounting base, moving wheels, a handrail, a connecting plate, and a blade body. The moving wheels are fixedly paired on the mounting base. The handrail is fixed on the mounting base for controlling the moving direction of the moving wheels. The connecting plate is fixed on the mounting base for mounting the blade body. A disassembly mechanism for conveniently replacing the blade body is fixed on the connecting plate.

[0008] The disassembly mechanism includes a mounting rod, a threaded rod, and a mounting cover. The mounting rod is fixed on the connecting plate. The threaded rod is fixed on the mounting rod. The mounting cover is fixed on the mounting rod for positioning the blade body. A plurality of insertion rods distributed in a circumferential array are also fixed on the mounting cover. A protective pad for clamping the blade body in cooperation with the mounting cover is also provided on the threaded rod. A prompting mechanism for prompting the installation of the blade body is provided on the protective pad.

[0009] In a further technical solution, the prompting mechanism includes a mounting groove, a pressing switch, and a signal prompting light. The mounting groove is opened on the limiting plate for mounting the pressing switch. The signal prompting light is fixed on the connecting plate and is signal-connected to the pressing switch.

[0010] In a further technical solution, a protective pad is fixedly connected between the facing surfaces of the mounting cover and the limiting plate, and the protective pad is made of rubber.

[0011] In a further technical solution, the mounting cover, the limiting plate, and the protective pad are all in a corresponding shape and fit with the blade body. The mounting cover is in a conical shape with a smaller upper part and a larger lower part.

[0012] In a further technical solution, the bottom end of the threaded rod is threadedly connected with a positioning plate, and the top diameter of the positioning plate is the same as that of the limiting plate.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. Through the cooperation of the mounting cover, the insertion rod and the threaded rod, the replacement process of the blade body becomes simple and fast. At the same time, the mounting cover and the protective pad cooperate with each other to clamp and fix the blade body, and the insertion rod positions and assists in fixing the blade body, so that the replacement work of the blade can be quickly completed, greatly improving the efficiency of blade replacement, reducing the downtime maintenance time of the equipment, achieving the effect of convenient replacement, and avoiding the need for the operator to carry a variety of professional tools for operation;

[0015] 2. When the blade body is installed in place and triggers the pressure switch, the signal indicator light lights up, providing an intuitive and clear installation success prompt for the operator. This helps the operator to timely confirm the installation status of the blade body, avoid incorrect operations due to improper installation of the blade body, and avoid accidents that may be caused by the blade body not being installed in place, further improving the overall safety performance of the equipment and reducing the probability of safety accidents caused by blade body failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the present utility model;

[0017] Figure 2 is the disassembly structural schematic diagram of the present utility model;

[0018] Figure 3 is the side sectional installation structural schematic diagram of the disassembly structure of the present utility model;

[0019] Figure 4 is the unfolded structural schematic diagram of the disassembly mechanism of the present utility model;

[0020] Figure 5 is the Figure 4 enlarged structural schematic diagram of part A in the present utility model.

[0021] DESCRIPTION OF THE REFERENCE NUMERALS:

[0022] 1. Mounting base; 2. Movable wheels; 3. Handrail; 4. Connecting plate; 5. Blade body;

[0023] Dismantling mechanism: 6. Mounting rod; 7. Threaded rod; 8. Mounting cover; 9. Limiting plate; 10. Plug rod; 11. Protective pad; 12. Positioning plate;

[0024] Prompt mechanism: 13. Mounting groove; 14. Press switch; 15. Signal indicator light. Specific implementation mode

[0025] To make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation modes.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0028] Embodiment:

[0029] Please refer to Figures 1 - 5 , a lawn mower that facilitates blade replacement, including a mounting base 1, movable wheels 2, a handrail 3, a connecting plate 4, and a blade body 5. The movable wheels 2 are fixedly paired on the mounting base 1, the handrail 3 is fixed on the mounting base 1 for controlling the moving direction of the movable wheels 2, the connecting plate 4 is fixed on the mounting base 1 for mounting the blade body 5, and a dismantling mechanism for facilitating the replacement of the blade body 5 is fixed on the connecting plate 4;

[0030] The disassembly mechanism includes a mounting rod 6, a threaded rod 7, and a mounting cover 8. The mounting rod 6 is fixed on the connecting plate 4, the threaded rod 7 is fixed on the mounting rod 6, and the mounting cover 8 is fixed on the mounting rod 6 for positioning the blade body 5. A plurality of insertion rods 10 distributed in a circumferential array are also fixed on the mounting cover 8. A protective pad 11 that cooperates with the mounting cover 8 to clamp the blade body 5 is also provided on the threaded rod 7. A prompting mechanism for prompting the installation of the blade body 5 is provided on the protective pad 11.

[0031] The working principle of the above technical solution is as follows:

[0032] When the blade body 5 of the lawn mower needs to be replaced, first unscrew the mounting cover 8 from the threaded rod 7 of the mounting rod 6. Then, remove the old blade to be replaced from the mounting rod 6. Subsequently, put the new blade body 5 on the mounting rod 6 and align the corresponding holes on the blade body 5 with the insertion rods 10 on the mounting cover 8. Reinstall the mounting cover 8 on the threaded rod 7 of the mounting rod 6 and rotate it tightly, so that the mounting cover 8 and the protective pad 11 cooperate to clamp and fix the blade body 5 on the mounting rod 6. During the installation process, when the blade body 5 is correctly installed and reaches the predetermined installation position and state, the prompting mechanism will emit a corresponding prompt signal to inform the operator that the blade body 5 has been installed in place and subsequent use operations can be carried out.

[0033] Through the cooperative design of the mounting cover 8, the insertion rods 10, and the threaded rod 7, the replacement process of the blade body 5 becomes simple and fast. The operator can quickly complete the blade replacement work without complex operations and professional tools, greatly improving the blade replacement efficiency and reducing the equipment downtime for maintenance.

[0034] Please refer to Figure 1 and Figure 5 The prompting mechanism includes a mounting groove 13, a push switch 14, and a signal prompting lamp 15. The mounting groove 13 is opened on the limiting plate 9 for installing the push switch 14, and the signal prompting lamp 15 is fixed on the connecting plate 4 and is signal-connected to the push switch 14.

[0035] When replacing and installing the blade body 5, put the new blade body 5 on the mounting rod 6. As the mounting cover 8 is tightened on the threaded rod 7, the mounting cover 8 gradually approaches the protective pad 11. When the mounting cover 8 and the protective pad 11 tightly clamp the blade body 5 and reach the correct installation position, the blade body 5 will touch the push switch 14 in the mounting groove 13. The push switch 14 is triggered after being pressed. Since the push switch 14 is signal-connected to the signal prompting lamp 15, the trigger signal will be transmitted to the signal prompting lamp 15, and the signal prompting lamp 15 lights up after receiving the signal, thereby prompting the operator that the blade body 5 has been installed in place and subsequent use operations can be carried out.

[0036] When the blade body 5 is installed in place and triggers the push switch 14, the signal indicator light 15 lights up, providing an intuitive and clear indication of successful installation for the operator. This helps the operator promptly confirm the installation status of the blade body 5, avoid incorrect operations due to improper installation of the blade body 5, and improve the safety and accuracy of equipment use.

[0037] Please refer to Figure 2 and Figure 5 , between the facing surfaces of the mounting cover 8 and the limiting plate 9, a protective pad 11 is fixedly connected, and the material of the protective pad 11 is rubber.

[0038] On the one hand, the rubber protective pad 11 uses its own elastic deformation to increase the contact area and friction force with the blade body 5, so that the blade body 5 is firmly clamped between the mounting cover 8 and the limiting plate 9; on the other hand, the elastic buffering characteristics of rubber can absorb the vibration and impact generated by the blade body 5 during the operation of the lawn mower, reduce the loosening and displacement of the blade body 5, and at the same time reduce noise and wear, improve the stability and reliability of the installation of the blade body 5, ensure that the blade body 5 maintains the correct position and state during the operation, and achieve efficient and stable lawn mowing operations.

[0039] Through the rubber protective pad 11, good elasticity and friction coefficient are increased. The elastic deformation of the protective pad 11 increases the clamping force on the blade body 5, and can effectively fix the blade body 5 in the installation position, preventing the blade body 5 from loosening and shifting due to vibration or impact during the operation of the lawn mower, and ensuring the stability and continuity of the lawn mowing work.

[0040] Please refer to Figure 2 and Figure 5 , the mounting cover 8, the limiting plate 9, and the protective pad 11 are all in a corresponding shape and fit with the blade body 5, and the mounting cover 8 is in the shape of an upper-small and lower-large cone.

[0041] When performing the installation operation of the blade body 5, place the blade body 5 on the protective pad 11 on the limiting plate 9. Since the mounting cover 8 is in the shape of an upper-small and lower-large cone, and the mounting cover 8, the limiting plate 9, and the protective pad 11 all fit with the blade body 5 correspondingly, during the process of tightening the mounting cover 8 along the threaded rod 7, the conical surface of the mounting cover 8 gradually presses down.

[0042] Through the design of the mounting cover 8 in the shape of an upper-small and lower-large cone, combined with the limiting plate 9 and the corresponding protective pad 11, during the tightening process of the mounting cover 8, a uniform and stable clamping force can be applied to the blade body 5 from different directions, so that the blade body 5 is firmly fixed in the installation position.

[0043] Please refer to Figure 1 and Figure 4, the bottom end of the threaded rod 7 is threadedly connected with a positioning plate 12, and the top diameter of the positioning plate 12 is the same as that of the limiting plate 9.

[0044] Thread the positioning plate 12 onto the bottom end of the threaded rod 7. As the positioning plate 12 is tightened on the threaded rod 7, the positioning plate 12 gradually moves upward until its top surface is in close contact with the lower surface of the blade body 5, further fixing and positioning the blade body 5, so that the blade body 5 is firmly installed on the mounting rod 6.

[0045] The setting of the positioning plate 12 can provide support and fixation from the bottom of the blade body 5, and cooperate with the mounting cover 8 and the limiting plate 9 to ensure that the position of the blade body 5 on the mounting rod 6 is accurate and stable.

[0046] The above-described embodiments only represent the specific implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A lawn mower with convenient blade replacement, characterized in that, It includes a mounting base (1), moving wheels (2), handrails (3), a connecting plate (4), and a blade body (5). The moving wheels (2) are fixedly paired on the mounting base (1). The handrails (3) are fixed on the mounting base (1) for controlling the moving direction of the moving wheels (2). The connecting plate (4) is fixed on the mounting base (1) for mounting the blade body (5). A disassembly mechanism for facilitating the replacement of the blade body (5) is fixed on the connecting plate (4). The disassembly mechanism includes a mounting rod (6), a threaded rod (7), and a mounting cover (8). The mounting rod (6) is fixed on the connecting plate (4). The threaded rod (7) is fixed on the mounting rod (6). The mounting cover (8) is fixed on the mounting rod (6) for positioning the blade body (5). A plurality of plug rods (10) distributed in a circumferential array are also fixed on the mounting cover (8). A protective pad (11) for clamping the blade body (5) in cooperation with the mounting cover (8) is also arranged on the threaded rod (7). A prompting mechanism for prompting the installation of the blade body (5) is arranged on the protective pad (11).

2. The lawn mower with a conveniently replaceable blade according to claim 1, characterized in that, The prompting mechanism includes a mounting groove (13), a push switch (14), and a signal indicator light (15). The mounting groove (13) is opened on the limiting plate (9) for mounting the push switch (14). The signal indicator light (15) is fixed on the connecting plate (4) and is signal-connected to the push switch (14).

3. The lawn mower with a blade that is conveniently replaceable according to claim 1, wherein Protective pads (11) are fixedly connected between the facing surfaces of the mounting cover (8) and the limiting plate (9). The material of the protective pad (11) is rubber.

4. The lawn mower with a blade that can be conveniently replaced according to claim 1, characterized in that, The mounting cover (8), the limiting plate (9), and the protective pad (11) are all in a corresponding shape and are in contact with the blade body (5). The mounting cover (8) is in a conical shape with a smaller upper part and a larger lower part.

5. The lawn mower with a blade conveniently replaceable according to claim 1, characterized in that, A positioning plate (12) is threadedly connected to the bottom end of the threaded rod (7). The top diameter of the positioning plate (12) is the same as that of the limiting plate (9).

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