A chassis system, a cutter system and a lawnmower

Abstract

The patent discloses a chassis system, a cutter system and a mower. The chassis system comprises a front wheel unit with a differential and a driving motor, and a power / non-power rear wheel steering unit which is rapidly switched through a quick switching interface to quickly complete the mode switching of the flat mode and the off-road mode. The task cutters are arranged in a triangular shape, two groups are arranged in front of the vehicle, and one group is arranged under the chassis, which greatly increases the sweeping area during single operation and improves the operation efficiency of the whole machine. All the task cutters have a unified cutter holder, the cutter holder is provided with a unified interface rotating shaft, and the cutter hanger is lifted by an electric push rod to realize the quick replacement of different task cutters. The electric mower can meet different operation requirements through the quick replacement of the task cutters. The novel mower realizes downward compatibility and is suitable for multiple terrains and multiple tasks. The compatible design greatly reduces the types of equipment and reduces the investment and maintenance cost of users.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, specifically to a chassis system, a blade system, and a lawnmower. Background Technology

[0002] Many sports fields, such as those for football, rugby, lawn tennis, and golf, require turf maintenance. Different sports fields have different standards for grass varieties, grass height during matches, and grass density. The terrain also varies greatly. For example, football, rugby, hockey, cricket, and lawn tennis fields are flat and regular. Golf courses, however, and various landscape lawns are often laid out according to the terrain, with complex terrain, steep slopes, and significant elevation differences. Lawn mowers need to be designed to adapt to different usage scenarios, resulting in a wide variety of lawn mowers on the market that are incompatible with each other. For example, lawn mowers designed for leveling fields can only be used on flat ground; their structure is relatively simple, and their power requirements are low. However, the complex terrain of golf courses requires lawn mowers with off-road capabilities and sufficient power reserves. The incompatibility between different lawn mowers leads to increased equipment costs. Utility Model Content

[0003] The purpose of this utility model is to provide a chassis system, a blade system, and a lawnmower in order to solve the above problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution: A chassis system, comprising: a chassis body; A front wheel unit, wherein the front wheel unit has a differential and a drive motor; The rear wheel unit is connected to the chassis body via a conversion structure, wherein the rear wheel unit is a non-powered rear wheel or a powered rear wheel.

[0005] As a further description of the above technical solution, the conversion structure is a conversion interface disposed at one end of the chassis body.

[0006] As a further description of the above technical solution, the conversion interface includes a bearing housing disposed at one end of the chassis body, and the rear wheel unit includes a steering spindle, which is inserted into the interior of the bearing housing.

[0007] As a further description of the above technical solution, the unpowered rear wheel includes a hub, a hub cantilever bracket is provided above the hub, a steering spindle is fixed above the hub cantilever bracket, and a steering sprocket and a steering sensor are fixed at the top of the steering spindle.

[0008] As a further description of the above technical solution, the power rear wheel includes a hub, a reducer is connected to the center of the hub, a travel motor is connected to the outside of the reducer, a hub cantilever bracket is fixedly connected to the upper outside of the reducer, a steering spindle is fixedly connected above the hub cantilever bracket, and a steering sprocket and a steering sensor are fixed to the top of the steering spindle.

[0009] A tooling system is also provided, which is connected to a chassis system. The tooling system includes a tool mounting shaft, which is connected to the tool. A hanger, one end of which is provided with a hanger bushing, the hanger bushing being inserted into the tool mounting shaft, and the hanger bushing and the tool mounting shaft being connected by a fixing pin; A connecting rod, which is slidably connected to one end of the hanger.

[0010] As a further description of the above technical solution, the tool system is provided in multiple sets, and the tool system is distributed in front of and behind the front wheel unit.

[0011] As a further description of the above technical solution, the external connection of the hanger is a lifting structure, which is used to lift the hanger and the tool mounting shaft.

[0012] A lawnmower is also provided, including the chassis system and the blade system.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model can achieve quick switching between the unpowered rear wheel and the powered rear wheel through a conversion structure. The differential and drive motor of the front wheel unit ensure driving performance, enabling the lawnmower to adapt to both flat ground and off-road terrain, reducing the types of equipment and lowering costs.

[0014] 2. This utility model enables quick blade replacement. Multiple blades are distributed in front of and behind the front wheel to expand the working range. The lifting structure can flexibly raise and lower the blades. It can be used with different types of blades to meet various lawn maintenance needs such as mowing, root cutting, and aeration.

[0015] To more clearly illustrate the structural features and functions of this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments. Attached Figure Description

[0016] Figure 1 This is a side view of the lawnmower provided by this utility model; Figure 2 This is a schematic diagram of the connection between the non-powered rear wheel and the lawnmower of this utility model; Figure 3This is a schematic diagram of the conversion interface between the power rear wheel and the lawnmower of this utility model; Figure 4 This is a perspective view of the connection between the blade of this utility model and the lawnmower; Figure 5 This is a schematic diagram of the intermediate structure connecting the blade of this utility model to the lawnmower.

[0017] Reference numerals: 110, chassis body; 120, front wheel unit; 130, rear wheel unit; 131, unpowered rear wheel; 132, powered rear wheel; 133, wheel hub; 134, wheel hub cantilever bracket; 135, steering spindle; 136, steering sprocket; 137, steering sensor; 138, reducer; 139, travel motor; 140, conversion interface; 141, bearing housing; 210, tool mounting shaft; 220, tool; 230, hanger; 240, hanger bushing; 250, fixing pin; 260, connecting rod; 270, lifting structure. Detailed Implementation

[0018] 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.

[0019] like Figures 1-3 As shown, in one embodiment, a chassis system includes a chassis body 110; The front wheel unit 120 includes a differential and a drive motor. The lawnmower's front wheel also uses a drive axle with a differential, accommodating both steering and driving needs.

[0020] The rear wheel unit 130 is connected to the chassis body 110 through a conversion structure. The rear wheel unit 130 is either a non-powered rear wheel 131 or a powered rear wheel 132.

[0021] When in use, the type of rear wheel of the lawnmower can be changed according to the needs of use. Specifically, it can be quickly changed through the conversion structure on the chassis body 110. After the change, the adaptability to various terrains can be solved, effectively reducing the increase in hardware costs caused by the need to use different models of lawnmowers when mowing grass on different terrains.

[0022] Specifically, when used for leveling the ground, the front wheel unit 120 is a universal front-wheel drive system, while the rear wheels are steering wheels with only steering function, that is, the rear wheels are unpowered rear wheels 131.

[0023] When used in off-road terrain, the front wheel unit 120 is a universal front-wheel drive system, while the rear wheels use the power rear wheel 132, which transforms the whole vehicle into a dual-drive system with more power.

[0024] In some embodiments, the conversion interface 140 is located at one end of the chassis body 110. Specifically, the conversion interface 140 is located at the rear end of the chassis body 110 corresponding to the rear wheel position. The conversion interface 140 includes a bearing housing 141 located at one end of the chassis body 110. The rear wheel unit 130 includes a steering spindle 135, which is inserted into the bearing housing 141. In use, the steering spindle 135 in the rear wheel unit 130 is inserted into the bearing housing 141, enabling quick replacement of the rear wheel unit 130, which is convenient to operate.

[0025] In some embodiments, such as Figure 2 As shown, the structure of the unpowered rear wheel 131 is described in detail. The unpowered rear wheel 131 includes a hub 133, a hub cantilever bracket 134 is provided above the hub 133, a steering spindle 135 is fixed above the hub cantilever bracket 134, and a steering sprocket 136 and a steering sensor 137 are fixed at the top of the steering spindle 135. A tire is fitted over the hub 133. The hub cantilever bracket 134 is connected to the center of the hub 133, which ensures the normal rotation of the hub 133 and also provides structural support for the connection between the rear wheel and the chassis body 110.

[0026] In some embodiments, such as Figure 3 As shown, the structure of the powered rear wheel 132 is described in detail. The powered rear wheel 132 includes a hub 133. A reducer 138 is connected to the center of the hub 133. A travel motor 139 is connected to the outside of the reducer 138. A hub cantilever bracket 134 is fixedly connected to the upper part of the reducer 138. A steering spindle 135 is fixedly connected to the top of the hub cantilever bracket 134. A steering sprocket 136 and a steering sensor 137 are fixed to the top of the steering spindle 135.

[0027] The rear wheel 132 utilizes a combination of a drive motor 139 and a planetary reducer, equipped with an overrunning clutch. When operating on undulating terrain, since the vehicle can traverse most terrains, the rear wheel power only needs to intervene occasionally to propel the vehicle through extreme inclines. After traversing extreme terrain, the drive motor can be immediately shut off to save power and ensure sufficient operating time. The planetary reducer 138 amplifies the motor torque, increasing rear wheel thrust. The overrunning clutch ensures that even when the rear wheel motor is not operating, the rear wheels can still smoothly follow the direction of the front wheels without causing reverse drag. The timing of rear wheel power intervention is specifically controlled by the vehicle's computer.

[0028] like Figure 4-5 As shown, this utility model also provides a cutting tool system, which is connected to the chassis system. The cutting tool system includes a cutting tool mounting shaft 210, which is connected to a cutting tool 220. The lawnmower has a support frame 230, one end of which is equipped with a support frame sleeve 240. The support frame sleeve 240 is inserted into the blade mounting shaft 210, and the support frame sleeve 240 and the blade mounting shaft 210 are connected by a fixing pin 250. When the lawnmower is moving, the support frame 230 raises the blade 220, and the blade 220 is lowered during operation. The blade 220 can be of different types, such as a mowing blade 220, a root cutting blade 220, and a drilling blade 220. The specific type can be selected according to actual needs, and no limitation is made here.

[0029] When it is necessary to replace the tool 220, simply remove the retaining pin 250, remove the mounting shaft of the tool 220 from the hanger bushing 240, insert the tool mounting shaft 210 of the new tool 220 into the hanger bushing 240, and reinstall the retaining pin 250, thereby achieving quick replacement of the tool 220.

[0030] The connecting rod 260 is slidably connected to one end of the hanger 230. A groove is provided in the connecting rod 260. When the hanger 230 moves up and down, one end of the hanger 230 can move in the groove of the connecting rod 260, which can also limit the connecting rod 260 to a certain extent.

[0031] In some embodiments, multiple sets of tool systems are provided, and the tool systems are distributed in front of and behind the front wheel unit 120.

[0032] In some embodiments, the external connection of the hanger 230 is a lifting structure 270, which is used to lift the hanger 230 and the tool mounting shaft 210. The lifting structure 270 can be a hydraulic rod or a linear motor or other mature drive device. The lifting structure 270 can drive the hanger 230 to rise or fall, thereby realizing the lifting and lowering of the tool 220.

[0033] In one embodiment, different lawn maintenance tasks require different blades, including mowing rollers, root cutters, and aerators. In the blade system, the task blades, such as the mowing blade 220, root cutter 220, and aerator 220, are arranged in a triangular pattern, with two sets at the front of the vehicle and one set under the chassis. This layout greatly increases the sweeping area per operation, improving overall machine efficiency.

[0034] On the other hand, this application also provides a lawnmower that includes the aforementioned chassis system and blade system.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A chassis system, characterized in that, include: Chassis main body; A front wheel unit, wherein the front wheel unit has a differential and a drive motor; The rear wheel unit is connected to the chassis body via a conversion structure, wherein the rear wheel unit includes a non-powered rear wheel and a powered rear wheel.

2. The chassis system according to claim 1, characterized in that, The conversion structure is a conversion interface located at one end of the chassis body.

3. The chassis system according to claim 2, characterized in that, The conversion interface includes a bearing housing located at one end of the chassis body, and the rear wheel unit includes a steering spindle that is inserted into the bearing housing.

4. The chassis system according to claim 1, characterized in that, The unpowered rear wheel includes a hub, a hub cantilever bracket is provided above the hub, a steering spindle is fixed above the hub cantilever bracket, and a steering sprocket and a steering sensor are fixed at the top of the steering spindle.

5. The chassis system according to claim 1, characterized in that, The power rear wheel includes a hub, a reducer is disposed at the center of the hub, a travel motor is connected to the outside of the reducer, a hub cantilever bracket is fixedly connected to the upper outside of the reducer, a steering spindle is fixedly connected above the hub cantilever bracket, and a steering sprocket and a steering sensor are fixedly fixed at the top of the steering spindle.

6. A cutting tool system, characterized in that, The tooling system is connected to the chassis system and includes a tool mounting shaft connected to the tool. A hanger, one end of which is provided with a hanger bushing, the hanger bushing being inserted into the tool mounting shaft, and the hanger bushing and the tool mounting shaft being connected by a fixing pin; A connecting rod, which is slidably connected to one end of the hanger.

7. The tooling system according to claim 6, characterized in that, The cutting tool system is provided in multiple sets, and the cutting tool system is distributed in front of and behind the front wheel unit.

8. The tooling system according to claim 6, characterized in that, The external connection of the hanger is a lifting structure, which is used to lift the hanger and the tool mounting shaft.

9. A lawnmower, characterized in that, It includes the chassis system according to any one of claims 1-5 and the cutting tool system according to any one of claims 6-8.

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