A lawn mower with easy replacement of flail blades
By adopting two sets of disconnected multi-axis blade structures and a fully sealed integrated bearing box in the lawn mower, the problem of inconvenience in replacing blades and bearings by lawn mower is solved, which improves mowing efficiency and stability, extends equipment life, and improves safety and reliability.
Patent Information
- Application Number
- CN202420407345.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-03-04
AI Technical Summary
There are inconvenience problems when replacing the blade and bearings in existing lawn mowers, especially lawn mowers with multi-axis blade structures. The design of the countershaft connection of the blade causes difficulty in replacement, and the bearing box design is unreasonable, which cannot effectively prevent the invasion of weeds, shrubs and stones, affecting service life and safety.
A lawn mower is designed to facilitate the replacement of the swing knife, adopting two sets of disconnected multi-axis swing knife structures and a fully sealed integrated bearing box. The size of the countershaft is shortened after it is disconnected to improve rigidity, and the guide gathering blocks effectively prevent weeds and stones from entering.
It improves the mowing efficiency and stability of the lawn mower, extends the equipment life, reduces maintenance costs, and greatly improves the safety and reliability of the entire machine.
Smart Images
Figure CN222736678U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of agricultural mechanical weeding equipment, in particular to a lawn mower with a fling blade that is easy to replace. Background Art
[0002] At present, the key weeding components of domestic weeders mostly use a knife roller rotor method or a multi-axis knife swinging structure to achieve cutting, striking, crushing, and scattering actions.
[0003] In the traditional technical solution, lawn mowers that use a knife roller rotor mechanism have problems in the production and processing of the rotor drum and the swing knife fixing groove. The welding process is unbalanced, which leads to the problem of the rotation balance of the entire drum. In the later use stage, the drum is not adapted to the changing terrain environment, and the replacement of after-sales knives and bumps cause unbalanced rotation and mechanical vibration. The vibration problem caused by imbalance affects the user experience at the least, and endangers the life and safety of the operator at the worst. The bearing box design at both ends of the drum is not properly protected, and weeds are easily drawn into it. The exposed bearing design also easily causes sand particles to enter the bearing, greatly shortening the service life of the whole machine.
[0004] The lawn mower with a multi-axis blade-throwing mechanism has partially solved the balance problem and has a simple process. However, the bearing boxes at both ends of the products currently on the market are fixedly connected to the clamping plates on both sides of the lawn mower frame. The bearing box and the rotating part of the main shaft are only protected by a 1mm thick iron box, and there is a gap between the iron box and the clamping plates on both sides of the frame. This structure cannot prevent weeds and shrubs from getting involved, and it cannot prevent stones from hitting. If the blade or bearing needs to be replaced during use, the bearing of this structure cannot be removed no matter what tool is used, and the later maintenance is very troublesome. In addition, the secondary shafts connected to the blades of the lawn mowers with multi-axis blade-throwing structures on the market are all through shafts. Although this structure is simple in design and easy to produce, if it is necessary to replace worn or broken blades or bent and deformed secondary shafts in later use, the entire multi-axis blade-throwing structure needs to be completely removed from the lawn mower frame, and then the entire secondary shaft can be pulled out from one end for replacement. The design is unreasonable and very troublesome. For this reason, we propose a lawn mower that is easy to replace the blade. Utility Model Content
[0005] The utility model aims to provide a lawn mower with an easily replaceable fling blade, so as to solve the problems raised in the above-mentioned background technology.
[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:
[0007] A lawn mower with easy replacement of fling blades comprises a lawn mower frame and a fling blade mechanism assembly installed on the lawn mower frame, wherein the fling blade mechanism assembly comprises a main shaft, a main shaft is mounted at both ends of the lawn mower frame, both ends of the main shaft are mounted with an integrated bearing box, three fixed plates are evenly distributed and fixedly connected to the outer side of the main shaft, a plurality of secondary shafts are evenly distributed and connected between the plurality of fixed plates, and a plurality of fling blades are evenly distributed on the outer side of the secondary shaft.
[0008] Preferably, the connection between the integrated bearing box and the main shaft is completely sealed, and bearings are arranged on the inner side of the integrated bearing box, and the bearings are fixed to the main shaft.
[0009] Preferably, one side of the integrated bearing box is reversely mounted on the main shaft, and the other side of the integrated bearing box is connected and fixed to the entire frame of the lawn mower, and both sides of the integrated bearing box are completely sealed.
[0010] Preferably, the secondary shafts are in two groups of disconnected shapes and are circumferentially distributed on the fixed plate, the plurality of secondary shafts are distributed at staggered angles, and the projections of the end faces of the plurality of secondary shafts on the fixed plate are in an equidistantly distributed array.
[0011] Preferably, the flail cutters are located at different positions on each secondary shaft and are continuously linearly distributed in the axial projection.
[0012] Preferably, guide gathering blocks are fixed on the inner sides of both ends of the lawn mower frame.
[0013] Preferably, the height of the guide gathering block is greater than the height of the intermediate gap between the blade-flinging mechanism assembly and the entire frame of the lawn mower.
[0014] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.
[0015] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:
[0016] The utility model can adapt to various complex and changeable terrain working environments. Through the one-piece bearing box with a completely sealed design, it can absolutely prevent the intrusion of soil and gravel and the winding of weeds and shrubs during work, can resist the collision of hard objects such as stones, and can be easily disassembled for later maintenance.
[0017] The guide gathering block arranged at the front end of the lawn mower frame of the utility model can effectively gather weeds, shrubs, even hard objects such as stones to the front end of the lawn mower frame close to the center rotation working position, can effectively prevent weeds from being drawn into the main rotating shaft, can prevent shrubs and stones from colliding with the integrated bearing box, effectively protect the key components of the whole machine, extend the life of the equipment, and greatly improve the safety and reliability of the whole machine.
[0018] This new type of machine adopts a two-set disconnected multi-axis blade-throwing structure. In actual operation, the efficiency of mowing and chopping grass is greatly improved. The shortened size of the secondary shaft after disconnection can improve the rigidity of the secondary shaft, reduce the chance of bending, and thus improve the stability and balance of the whole machine. In actual use, whether it is to replace a damaged blade or a bent and deformed secondary shaft at a later stage, it is no longer necessary to remove the entire blade-throwing mechanism assembly from the frame of the lawn mower. It is only necessary to pull out half of the secondary shaft from the other end, which greatly improves the maintainability and convenience of the whole machine, thereby greatly reducing the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0020] Figure 1 It is a structural schematic diagram of the utility model;
[0021] Figure 2 It is a schematic diagram of the connection structure of the lawn mower frame and the integrated bearing box of the utility model;
[0022] Figure 3 It is a schematic diagram of the connection structure between the fixed plate and the main shaft of the utility model;
[0023] Figure 4 It is a schematic diagram of the connection structure between the fixed plate and the secondary shaft of the utility model;
[0024] Figure 5 It is a schematic diagram of the cutaway structure of the knife-flinging mechanism assembly of the utility model;
[0025] Figure 6 For this utility model Figure 5 Enlarged schematic diagram at point A in the middle.
[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0027] In the figure: 1. complete frame of the lawn mower; 2. integrated bearing box; 3. guide gathering block; 4. swinging knife; 5. fixing plate; 6. secondary shaft; 7. main shaft; 8. bearing. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0029] Example 1
[0030] Reference Figure 1-6 A lawn mower that is easy to replace a flinging blade comprises a lawn mower frame 1 and a flinging blade mechanism assembly mounted on the lawn mower frame 1, the flinging blade mechanism assembly comprising a main shaft 7, both ends of the lawn mower frame 1 are equipped with a main shaft 7, both ends of the main shaft 7 are equipped with an integrated bearing box 2, three fixed plates 5 are evenly fixedly connected to the outer side of the main shaft 7, a plurality of secondary shafts 6 are evenly connected between the plurality of fixed plates 5, a plurality of flinging blades 4 are evenly arranged on the outer side of the secondary shaft 6, the integrated bearing box 2 is fastened to the lawn mower frame 1 from the outside with screws, and the entire flinging blade mechanism assembly can be removed as long as the screws are loosened.
[0031] The connection between the integrated bearing box 2 and the main shaft 7 is completely sealed. The inner side of the integrated bearing box 2 is provided with a bearing 8, which is fixed to the main shaft 7. The bearing 8 is installed in the integrated bearing box 2. There is no gap on both sides, and no debris can enter, ensuring that the bearing is clean and durable.
[0032] One side of the integrated bearing box 2 is reversely mounted on the main shaft 7, and the other side of the integrated bearing box 2 is connected and fixed to the lawn mower frame 1. Both sides of the integrated bearing box 2 are completely sealed. The integrated bearing box 2 can be easily removed from the main shaft 7 with a puller, which is convenient for maintenance.
[0033] The secondary shafts 6 are in two groups of disconnected shapes and are distributed circumferentially on the fixed plate 5. The multiple secondary shafts 6 are distributed at staggered angles. The projections of the end faces of the multiple secondary shafts 6 on the fixed plate 5 are in an equidistantly distributed array. The swing knives 4 on each group of secondary shafts 6 are staggered at different distances and are evenly distributed on the axis of the main shaft 7.
[0034] The flail blades 4 are located at different positions on each secondary shaft 6 and are continuously linearly distributed in axial projection, which facilitates higher mowing efficiency during mowing operations.
[0035] Example 2
[0036] Embodiment 1 is further optimized, specifically, as Figure 2 As shown, guide gathering blocks 3 are fixed to the inner sides of both ends of the lawn mower frame 1. The height of the guide gathering blocks 3 is greater than the height of the intermediate gap between the blade-flinging mechanism assembly and the lawn mower frame 1. By setting the guide gathering blocks 3, it is convenient to guide and gather weeds, shrubs, and even stones to the rotation position of the blade-flinging mechanism assembly at the front end during use. This can effectively prevent weeds and shrubs from being drawn into the machine shaft, and prevent stones and hard objects from damaging the integrated bearing box 2, thereby effectively protecting the key components of the lawn mower and improving the safety and service life of the whole machine.
[0037] From the above, we can know that:
[0038] The utility model aims at the technical problem that although the lawn mower adopts a multi-axis blade-throwing mechanism, the balance problem is partially solved and the process is simple, the bearing boxes at both ends of the products currently on the market are fixedly connected to the clamping plates on both sides of the lawn mower frame, and the bearing box and the rotating part of the main shaft are only protected by a 1mm thick iron box, and there is a gap between the iron box and the clamping plates on both sides of the frame. This structure not only cannot prevent weeds and shrubs from being drawn in, but also cannot prevent stones from knocking against them. Moreover, if the blade or bearing needs to be replaced during use, the bearing of this structure cannot be removed no matter what tools are used, and later maintenance is very troublesome. Moreover, the lawn mowers with multi-axis blade-flinging structures on the market all have through shafts for connecting the blades. Although the structure is simple in design and easy to produce, if a worn or broken blade or a bent and deformed blade needs to be replaced in later use, the entire multi-axis blade-flinging structure needs to be disassembled from the lawn mower frame, and then the entire blade-flinging shaft can be pulled out from one end for replacement. This design is unreasonable and very troublesome. By adopting the technical solutions of the above embodiments and the above settings, the present application can certainly solve the above technical problems and achieve the following technical effects:
[0039] The guide gathering block arranged at the front end of the lawn mower frame 1 of the utility model can effectively gather weeds, shrubs, and even hard objects such as stones to the front end of the lawn mower frame 1 close to the center rotation working position, can effectively prevent weeds from being drawn into the main rotating shaft, can prevent shrubs and stones from colliding with the integrated bearing box 2, effectively protect the key components of the whole machine, extend the life of the equipment, and greatly improve the safety and reliability of the whole machine.
[0040] The novel structure of the present invention adopts two sets of disconnected multi-axis blade-throwing structures, which greatly improves the efficiency of mowing and chopping grass in actual operation. The shortened size of the secondary shaft 6 after disconnection can improve the rigidity of the secondary shaft 6, reduce the probability of bending, and thus improve the stability and balance of the whole machine. In actual use, whether it is to replace the damaged blade-throwing blade 4 or the bent and deformed secondary shaft 6 at a later stage, it is no longer necessary to remove the entire blade-throwing mechanism assembly from the lawn mower frame 1, and only half of the secondary shaft 6 needs to be pulled out from the other end, which greatly improves the maintainability and convenience of the whole machine, thereby greatly reducing the cost of use.
[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0042] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.
Claims
1. A lawn mower that is easy to replace a flail blade, characterized in that: The utility model comprises a lawn mower frame (1) and a blade-flicker mechanism assembly installed on the lawn mower frame (1), wherein the blade-flicker mechanism assembly comprises a main shaft (7), a main shaft (7) is installed at both ends of the lawn mower frame (1), and an integrated bearing box (2) is installed at both ends of the main shaft (7), three fixed plates (5) are evenly distributed and fixedly connected to the outer side of the main shaft (7), a plurality of secondary shafts (6) are evenly distributed between the plurality of fixed plates (5), a plurality of blades (4) are evenly distributed on the outer side of the secondary shaft (6), the secondary shafts (6) are in two groups of disconnected shapes and are circumferentially distributed on the fixed plates (5), the plurality of secondary shafts (6) are distributed at staggered angles, and the projections of the end faces of the plurality of secondary shafts (6) on the fixed plates (5) are in an equidistantly distributed array.
2. A lawn mower with easy replacement of flail blades according to claim 1, characterized in that: The connection between the integrated bearing box (2) and the main shaft (7) is completely sealed, and a bearing (8) is provided inside the integrated bearing box (2), and the bearing (8) is fixed to the main shaft (7).
3. A lawn mower with easy replacement of flail blades according to claim 2, characterized in that: One side of the integrated bearing box (2) is reversely mounted on the main shaft (7), and the other side of the integrated bearing box (2) is connected and fixed to the lawn mower frame (1). Both sides of the integrated bearing box (2) are completely sealed.
4. A lawn mower with easy replacement of flail blades according to claim 1, characterized in that: The flail blades (4) are located at different positions on each secondary shaft (6) and are continuously linearly distributed in the axial projection.
5. A lawn mower with easy replacement of flail blades according to claim 1, characterized in that: Guide gathering blocks (3) are fixed on the inner sides of both ends of the lawn mower frame (1).
6. A lawn mower with easy replacement of flail blades according to claim 5, characterized in that: The height of the guide gathering block (3) is greater than the height of the intermediate gap between the blade-flinging mechanism assembly and the lawn mower complete machine frame (1).