CN113068505A

CN113068505A - Grass cutter

Info

Publication number: CN113068505A
Application number: CN202110300071.3A
Authority: CN
Inventors: 耿长兴; 沈任远; 王永; 朱国锋; 陈俞松
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-07-06

Abstract

The application relates to a lawn mower, establish chassis mechanism and the casing that sets up mutually back on the back with the wheelset including chassis mechanism, the wheelset of being connected with chassis mechanism and lid, wherein, chassis mechanism includes: a chassis body; the cutting knife assembly is connected with the chassis body; the cutting driving part is used for driving the mowing assembly to cut the target object; the walking driving piece is used for driving the wheel set to move; the power source is used for driving the walking driving piece to work; the height adjusting assembly is used for adjusting the height of the chassis body relative to the ground so as to adjust the distance between the cutting knife assembly and the target object. Which can be height-adjusted according to the height of the target object to improve cutting efficiency.

Description

Grass cutter

Technical Field

The invention relates to a mower, and belongs to the technical field of garden tools.

Background

A lawn mower, also known as a weeding machine, a lawn trimmer and the like, is a tool for leveling a lawn. In the prior art, the target object encountered by the mower during the cutting process may be too high or too low. When the target object is too low, the mower cannot cut the target object, and the situation of ineffective cutting is caused; when the cutting target is too high, the target object can affect the work of the cutter head, so that the cutting efficiency of the mower is affected, and bad experience is brought to a user.

Disclosure of Invention

An object of the present invention is to provide a lawn mower that can be height-adjusted according to the height of a target object to improve cutting efficiency.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a lawn mower, includes chassis mechanism, with wheelset that chassis mechanism is connected, and the lid is established chassis mechanism is last and with the casing that the wheelset backed on the back and set up, wherein, chassis mechanism includes:

a chassis body;

the cutting knife assembly is connected with the chassis body;

the cutting driving part is used for driving the mowing assembly to cut the target object;

the walking driving piece is used for driving the wheel set to move;

the power source is used for driving the walking driving piece to work;

and the height adjusting assembly is used for adjusting the height of the chassis body relative to the ground so as to adjust the distance between the cutting knife assembly and the target object.

Furthermore, the chassis body comprises a first chassis and a second chassis, the height-adjusting assembly comprises a first connecting piece connected with the first chassis, a second connecting piece connected with the second chassis, a crank connecting rod used for connecting the first chassis and the second chassis, a pull rod connected with the crank connecting rod and a push rod mechanism used for driving the pull rod to move up and down, and the push rod mechanism is connected with the first chassis through the first connecting piece.

Further, the push rod mechanism comprises an electric push rod, and the electric push rod is connected with the pull rod through a third connecting piece.

Furthermore, the push rod mechanism further comprises a gas spring, one end of the gas spring is connected with the first connecting piece, and the other end of the gas spring is connected with the third connecting piece.

Further, the mower also comprises a guide rod connected with the second chassis, and at least part of the guide rod protrudes out of the first chassis to limit the descending height of the height-adjusting assembly.

Further, the cutter assembly is arranged on one side, facing the first chassis, of the second chassis.

Furthermore, the cutting knife assembly comprises a knife handle connected with the cutting driving part and a blade arranged at the end part of the knife handle.

Further, the cutting driving part is an engine, the cutting knife assembly further comprises a clutch connected with the knife handle, and the clutch is connected with the engine through a belt pulley.

Further, the lawn mower also includes a muffler connected to the engine.

Further, the lawn mower still includes to enclose and establishes certainly the safety cover of cutting knife subassembly periphery.

The invention has the beneficial effects that: through being provided with the height-adjusting subassembly, this height-adjusting subassembly is used for adjusting the height of chassis body for ground, and then adjusts the height of cutting knife subassembly for ground to the target object to co-altitude cuts, convenient and fast improves cutting efficiency.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of the lawn mower of the present invention.

Fig. 2 is a partial structural schematic diagram of fig. 1.

Fig. 3 is another schematic structural diagram of fig. 1.

Fig. 4 is another partial structural schematic diagram of fig. 1.

Fig. 5 is a schematic view of a portion of the structure of fig. 1.

Fig. 6 is a schematic view showing the open housing of the mower of the present invention.

Fig. 7 is a side view of the mower of the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. In the description of the present invention, the axis direction coincides with the height direction.

Referring to fig. 1 to 7, in a preferred embodiment of the present invention, a lawn mower 100 is used for cutting a target object, such as weeds, etc., without specific limitation on the application scenario of the lawn mower 100 and the type of the target object,

specifically, the mower 100 includes a chassis mechanism 1, a wheel set 2 connected to the chassis mechanism 1, and a housing 3 covering the chassis mechanism 1 and disposed opposite to the wheel set 2, where the housing 3 is a housing. The purpose of being provided with the casing 3 is: the chassis mechanism 1 is protected to prevent at least some components of the chassis mechanism 1 from being damaged by wind and sun during long-term exposure, thereby extending the useful life of the mower 100.

The chassis mechanism 1 includes a chassis body 11, a cutting knife assembly 12 connected to the chassis body 11, a cutting driving member 13 for driving the mowing assembly to cut the target object, a traveling driving member 15 for driving the wheel set 2 to move, and a power source 16 for driving the traveling driving member 15 to work, wherein the power source 16 is a storage battery. The wheel set 2 includes two front wheels 21 and two rear wheels 22, and the two rear wheels 22 are respectively connected with an independent walking driving member 15, so as to control the lawn mower 100 to conveniently steer in situ by controlling the speed difference of the two walking driving members 15. In the present embodiment, the walking driving member 15 is a walking motor, and indeed, in other embodiments, the walking driving member 15 may be other, which is not specifically limited herein, depending on the actual situation.

The chassis body 11 includes a first chassis 111 and a second chassis 112, the wheel set 2 is connected to the first chassis 111, and the cutter assembly 12 is connected to the second chassis 112. Wherein, the first chassis 111 is provided with a grass discharge port 113, and the grass discharge port 113 is arranged on at least one side of the first chassis 111 by taking the moving direction of the mower 100 as the front. In the present embodiment, the grass discharge port 113 is disposed on both sides of the first chassis 111, and the purpose of this arrangement is: the grass can be quickly discharged through the left grass discharge port 113 and the right grass discharge port 113 while the mower 100 quickly mows grass, so that the mowing efficiency is improved, and the labor cost is reduced. The first chassis 111 is further provided with a grass inlet/outlet, which is disposed behind the first chassis 111 with the moving direction of the mower 100 as the front, for discharging grass, or for putting cut grass in the grass inlet/outlet, and crushing the grass under the action of the cutter assembly 12 for grass crushing. That is, the cutter assembly 12 is disposed at a side of the second base plate 112 facing the first base plate 111, and a mounting place of the cutter assembly 12 on the second base plate 112 is disposed to communicate with the first base plate 111, so that grass is discharged from the grass discharge opening 113 and the grass inlet/outlet opening.

In the present embodiment, the cutting drive 13 is an engine 13, and the engine 13 is a fuel engine 13. Indeed, in other embodiments, the cutting assembly may also be a cutting motor, which is not specifically limited herein, depending on the actual situation. The purpose of using the motor 13 as a cutting drive 13 in this embodiment is: the starting of the cutting knife assembly 12 is separated from the starting of the mower 100, so that the danger of accidental injury of operation and the like caused by energy waste when the cutting knife assembly 12 is driven to work when the mower 100 is started is avoided. The mower 100 further comprises a silencer connected to the engine 13 for reducing noise generated by movement of the mower 100, thereby improving user experience. In the present embodiment, the cutting driving member 13 is connected to the cutting knife assembly 12 through a transmission member, wherein the transmission member is a conventional belt transmission, which is not described herein. Indeed, in other embodiments, the transmission member may be other, and is not limited herein, according to the actual situation.

The cutting knife assembly 12 comprises a knife handle 121 connected with the cutting driving part 13 and a blade 122 arranged at the end part of the knife handle 121, the knife handle 121 is a metal plate knife handle 121, and the blade 122 is a flail knife, so that the mowing efficiency is improved. Indeed, in other embodiments, the handle 121 may be made of other materials, such as stainless steel, and the blade 122 may also be made of other materials, such as a strip-shaped knife, which is not specifically limited herein, depending on the actual situation. The cutter assembly 12 further comprises a clutch 123 connected with the tool shank 121, the clutch 123 is connected with the engine 13 through a pulley, and the engine 13 controls the rotation speed of the tool shank 121 through the clutch 123. The pulley has a conventional structure, and the connection manner between the pulley and the engine 13 and the clutch 123 is also conventional, which is not described herein.

To prevent accidental injury during use of the mower 100 and to prevent chopped grass from flying around under centrifugal force, the mower 100 further includes a protective guard disposed about the outer periphery of the mower assembly 12.

In order to be able to cut weeds of different heights, the mower 100 further comprises an elevation assembly 14, and the elevation assembly 14 is used for adjusting the height of the chassis body 11 relative to the ground, and further adjusting the distance between the cutting blade assembly 12 and the target object. The height adjusting assembly 14 includes a first connecting member 141 connected to the first chassis 111, a second connecting member 142 connected to the second chassis 112, a crank connecting rod 147 for connecting the first chassis 111 and the second chassis 112, a pull rod 144 connected to the crank connecting rod 147, and a push rod mechanism for driving the pull rod 144 to move up and down, wherein the push rod mechanism is connected to the first chassis 111 through the first connecting member 141. The crank link 147 mechanism is a conventional mechanism and will not be described in detail herein.

As described above, the cutter assembly 12 is connected to the second chassis 112, wherein the second connecting member 142 is fixedly disposed on the second chassis 112, the cutter assembly 12 and the second connecting member 142 are disposed on opposite sides of the second chassis 112, but the positions of the cutter assembly 12 and the second chassis 112 are the same, so that the cutter assembly 12 can be fixed while the second connecting member 142 is connected to the second chassis 112. Indeed, in other embodiments, the cutter assembly 12 and the second chassis 112 may be connected by fasteners, which are not specifically limited herein, depending on the actual situation.

The push rod mechanism comprises an electric push rod 145, and the electric push rod 145 is connected with the pull rod 144 through a third connecting piece 143. The push rod mechanism further includes a gas spring 146, one end of the gas spring 146 is connected to the first connector 141, and the other end of the gas spring 146 is connected to the third connector 143.

The work flow of the height-adjusting assembly 14 is as follows: the electric push rod 145 moves upwards and lifts the pull rod 144 through the third connecting piece 143, and then lifts the second chassis 112 upwards through the crank connecting rod 147, so as to lift the cutter assembly 12 upwards; similarly, the electric push rod 145 moves downward and lowers the pull rod 144 via the third link 143, which in turn lowers the second chassis 112 via the crank link 147 to lower the cutter assembly 12 downward. The mower 100 further comprises a guide bar 148 connected to the second chassis 112, and at least a portion of the guide bar 148 protrudes from the first chassis 111 to limit the height of the height-adjusting assembly 14 from descending, i.e., cannot be further descended when the height-adjusting assembly 14 descends to the top end of the guide bar 148.

In summary, the following steps: through being provided with heightening component 14, this heightening component 14 is used for adjusting the height of chassis body 11 for ground, and then adjusts the height of cutting knife component 12 for ground to the target object of co-altitude cuts, convenient and fast improves cutting efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a lawn mower, its characterized in that includes chassis mechanism, with wheelset that chassis mechanism is connected, and the lid is established chassis mechanism is last and with the casing that the wheelset backed on the back and sets up, wherein, chassis mechanism includes:

a chassis body;

the cutting knife assembly is connected with the chassis body;

the walking driving piece is used for driving the wheel set to move;

the power source is used for driving the walking driving piece to work;

2. The mower of claim 1, wherein the chassis body comprises a first chassis and a second chassis, the height adjustment assembly comprises a first connecting member connected to the first chassis, a second connecting member connected to the second chassis, a crank connecting rod for connecting the first chassis and the second chassis, a pull rod connected to the crank connecting rod, and a push rod mechanism for driving the pull rod to move up and down, the push rod mechanism is connected to the first chassis through the first connecting member.

3. The mower of claim 2, wherein said pusher mechanism comprises an electrical pusher connected to said pull rod by a third link.

4. The mower of claim 3, wherein said pusher mechanism further comprises a gas spring, one end of said gas spring being connected to said first connector and the other end of said gas spring being connected to said third connector.

5. The mower of claim 2, further comprising a guide bar coupled to said second chassis, wherein at least a portion of said guide bar protrudes from said first chassis to limit a drop height of said height adjustment assembly.

6. The mower of claim 2, wherein said cutter assembly is disposed on a side of said second chassis facing said first chassis.

7. The lawnmower of claim 1, wherein the cutter assembly comprises a handle connected to the cutting drive and a blade disposed at an end of the handle.

8. The lawnmower of claim 7, wherein the cutting drive is an engine, the cutter assembly further comprising a clutch coupled to the handle, the clutch coupled to the engine via a pulley.

9. The mower of claim 8, further comprising a muffler coupled to said engine.

10. The mower of claim 7, further comprising a protective guard disposed about an outer periphery of said cutter assembly.