Mower cutter head and cutter detection and obstacle crossing method thereof

Abstract

The mowing machine cutter head comprises a chassis, a mounting seat and an air guide seat, the mounting seat is mounted at the top of the chassis, the first end of the air guide seat penetrates through the chassis and extends into the mounting seat, the air guide seat is provided with a rotating motor, the cutter head comprises a cutter and a first detection mechanism, the cutter is mounted at the second end of the air guide seat, and the first detection mechanism is mounted at the second end of the air guide seat. The output end of the rotating motor is connected with the cutter, the first detection mechanism is installed on the chassis, the detection end of the first detection mechanism faces the cutter, and when the rotating motor drives the cutter to rotate, the first detection mechanism detects the integrity of the cutter. The first detection mechanism judges whether the blade is missing or damaged according to the output pulse time interval, so that the situation is fed back, a user is notified to replace the blade in time, and the situation that turf is not cleaned thoroughly and needs to be cleaned repeatedly is avoided. And the height of the obstacle can be judged, so that the cutter is controlled to ascend and descend to climb over the obstacle, the method is simple, and the blade is prevented from being damaged.

Description

Technical Field

[0001] The invention relates to the technical field of turf maintenance, in particular to a lawn mower cutter disc and a cutter detection and obstacle climbing method thereof. Background Art

[0002] A lawn mower is also called a weed cutter, lawn mower, lawn trimmer, etc. A lawn mower is a mechanical tool used to trim lawns, vegetation, etc. The blade drives the cutter to rotate to cut the grass, and then the grass clippings are transferred to the grass collection box for collection through the fan blades and other blowing mechanisms.

[0003] During operation, existing lawn mowers may collide with obstacles such as stones, causing damage to the blades. Lawn mowers usually mow automatically, and after mowing, they return to the starting point for charging and other operations before the next mowing. When the blade is damaged, the user needs to replace it by himself. Only when the grass is cut incompletely or abnormally, the user will take the initiative to check whether the blade is missing, resulting in the grass not being cleaned properly and needing to be cleaned again.

[0004] In view of this, it is necessary to propose a new technical solution to solve the above technical problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a lawn mower cutter disc and a cutter detection and obstacle climbing method thereof, so as to solve the problems raised in the background technology.

[0006] In order to achieve the above-mentioned objectives, a first aspect of the present invention provides a lawn mower blade, including a chassis, a mounting seat and an air guide seat, wherein the mounting seat is installed on the top of the chassis, the first end of the air guide seat penetrates the chassis and extends into the mounting seat, the air guide seat is installed with a rotating motor, including a cutter and a first detection mechanism, the cutter is installed at the second end of the air guide seat, the output end of the rotating motor is connected to the cutter, and is used to drive the cutter to rotate to cut grass, the first detection mechanism is installed on the chassis, the detection end of the first detection mechanism faces the cutter, and when the rotating motor drives the cutter to rotate, the first detection mechanism detects the integrity of the cutter.

[0007] In a further technical solution, the first detection mechanism includes a switch sensor, the tool includes a tool holder and at least two blades, at least two blades are equidistantly spaced and mounted around the tool holder, and the sensing end of the switch sensor faces the blade for detecting the integrity of the blade.

[0008] A further technical solution also includes an anti-collision mechanism and a second detection mechanism. The anti-collision mechanism is rotatably mounted on the chassis, and the second detection mechanism is mounted on the chassis. The detection end of the second detection mechanism faces the anti-collision mechanism for detecting the rotation angle of the anti-collision mechanism.

[0009] In a further technical solution, the anti-collision mechanism includes a mounting frame, a rotating shaft and a plurality of anti-collision members, the mounting frame is mounted on the chassis, the rotating shaft passes through the mounting frame, and the plurality of anti-collision members are respectively mounted on the rotating shaft.

[0010] In a further technical solution, the mounting frame is installed on the top of the chassis, the chassis is provided with a plurality of through slots for passing the anti-collision member, and the top of the anti-collision member extends into the through slots and is fixedly installed on the rotating shaft.

[0011] A further technical solution also includes a lifting mechanism, which is installed on the mounting seat, and the output end is connected to the air guide seat, so as to drive the air guide seat to move up and down.

[0012] In a further technical solution, the lifting mechanism includes a lifting motor, a synchronous belt, multiple synchronous wheels and at least two transmission assemblies, the synchronous belt is sleeved on the multiple synchronous wheels, the lifting motor and the transmission assemblies are respectively installed on the mounting seat, the output end of the lifting motor is connected to one of the synchronous wheels, each of the transmission assemblies is respectively connected to a synchronous wheel, and the air guide seat is connected to the transmission assembly.

[0013] In a further technical solution, the transmission assembly includes a screw rod, a nut seat and a fixed frame, the screw rod is rotatably mounted on the fixed frame, the screw rod is sleeved with the synchronous wheel, the nut seat is sleeved on the screw rod, the nut seat is installed with a bracket, the first end of the bracket is connected to the nut seat, and the second end of the bracket is connected to the air guide seat.

[0014] In a second aspect, the present invention further provides a cutter detection method for a cutter disc, which is applied to the cutter disc of a lawn mower, and comprises the following steps:

[0015] S1, the rotary motor drives the tool to rotate;

[0016] S2, the lifting mechanism drives the tool to rise to a position where the first detection mechanism can sense. The first detection mechanism determines whether there is a blade according to the time interval of the output pulses. When the time intervals of the output pulses are the same, the blade is intact. When the time intervals of the output pulses are different, the blade is missing or damaged.

[0017] S3, the first detection mechanism transmits the signal to the control system, and the control system determines whether the blade is intact. When the blade is intact, the lawn mower starts mowing. When the blade is incomplete, the judgment result is transmitted to the user's mobile phone or other signal receiving device to remind the user to replace the blade.

[0018] In a third aspect, the present invention further provides a method for climbing over obstacles of a cutter disc, which is applied to the cutter disc of a lawn mower, and comprises the following steps:

[0019] S1, the anti-collision mechanism collides with an obstacle and determines whether it can cross the obstacle. If it cannot cross the obstacle, it will take a detour. If it can cross the obstacle, the second detection mechanism determines the rotation angle of the anti-collision mechanism and transmits the result to the control system;

[0020] S2, the control system adjusts the height of the tool according to the rotation angle of the anti-collision mechanism. When the rotation angle is smaller, the height of the tool from the ground is lower, and when the rotation angle is larger, the height of the tool from the ground is higher;

[0021] Among them, S2 drives the tool to rise and fall through the lifting mechanism.

[0022] Compared with the prior art, the present invention brings the following technical effects:

[0023] When the lawn mower cutter disc of the present invention is in use, the cutter is driven to rotate by a rotating motor, and the first detection mechanism determines whether the blade is missing or damaged according to the output pulse time interval, thereby providing feedback to notify the user to replace the blade in time to avoid uncleanly cleaning the grass and requiring repeated cleaning.

[0024] The present invention provides a tool detection method for a cutter disc, which is simple to detect and can notify the user to replace the blade in time, thereby avoiding the situation where the turf is not cleaned properly and needs to be cleaned repeatedly.

[0025] The obstacle climbing method of the cutter disc of the present invention can judge the height of the obstacle, thereby controlling the lifting and lowering of the cutter, thereby climbing over the obstacle. The method is simple and avoids damage to the blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 The utility model is a structural schematic diagram of a blade disc for a lawn mower of the present invention.

[0028] Figure 2 yes Figure 1 Schematic diagram of the structure at the bottom.

[0029] Figure 3 yes Figure 1 Schematic diagram of the middle air guide seat, tool and lifting mechanism.

[0030] Figure 4 yes Figure 3 A schematic diagram of the structure from another perspective.

[0031] Figure 5 It is a schematic diagram of the structure of the anti-collision mechanism and the second detection mechanism.

[0032] Figure 6 yes Figure 5 A schematic diagram of the structure from another perspective.

[0033] Figure 7 It is a schematic diagram of the structure after the tool rises.

[0034] Figure 8 yes Figure 7 Schematic diagram of the structure after the anti-collision mechanism is rotated.

[0035] Fig. 9 It is a schematic diagram of the structure of the rotating motor and the tool.

[0036] Description of main component symbols:

[0037] 1. chassis; 11. through slot;

[0038] 2. Mounting seat;

[0039] 3. Air guide seat; 31. Bracket;

[0040] 4. Rotating motor;

[0041] 5. knife; 51. knife holder; 52. blade;

[0042] 6. The first testing agency;

[0043] 7. Anti-collision mechanism; 71. Mounting frame; 72. Rotating shaft; 73. Anti-collision member;

[0044] 8. Second testing agency;

[0045] 9. Lifting mechanism; 91. Lifting motor; 92. Synchronous belt; 93. Synchronous wheel; 94. Transmission assembly; 941. Screw rod; 942. Nut seat; 943. Fixed bracket. DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0049] 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 connection; it can be a mechanical connection or an electrical connection; 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] Example 1

[0052] See Figure 1-9 As shown, the lawn mower blade includes a chassis 1, a mounting seat 2 and an air guide seat 3. The mounting seat 2 is mounted on the top of the chassis 1. The first end of the air guide seat 3 penetrates the chassis 1 and extends into the mounting seat 2. The air guide seat 3 is installed with a rotary motor 4, including a cutter 5 and a first detection mechanism 6. The cutter 5 is mounted on the second end of the air guide seat 3. The output end of the rotary motor 4 is connected to the cutter 5 to drive the cutter 5 to rotate and cut the grass. The first detection mechanism 6 is installed on the chassis 1. It should be noted that the upper end of the first detection mechanism 6 of this embodiment is located in the mounting seat 2. The output end of the first detection mechanism 6 penetrates the chassis 1 toward the cutter 5. When the rotary motor 4 drives the cutter 5 to rotate, the first detection mechanism 6 detects the integrity of the cutter 5. In other specific embodiments, the first detection mechanism 6 can also be directly set at the bottom of the chassis 1 facing the cutter 5.

[0053] When in use, the tool 5 is driven to rotate by the rotating motor 4, and the first detection mechanism 6 determines whether the blade 52 is missing or damaged according to the output pulse time interval, thereby providing feedback to notify the user to replace the blade 52 in time to avoid uncleanly cleaning the turf and requiring repeated cleaning.

[0054] like Figure 7 , Fig. 9 As shown, the first detection mechanism 6 includes a switch sensor, the tool 5 includes a tool holder 51 and at least two blades 52, at least two of the blades 52 are equidistantly spaced and installed around the tool holder 51, and the sensing end of the switch sensor faces the blade 52 for detecting the integrity of the blade 52.

[0055] It should be noted that the tool 5 of this embodiment includes three blades 52, and the three blades 52 are arranged around the tool holder 51 at equal intervals. Therefore, when the rotary motor 4 drives the tool 5 to rotate, one blade 52 will pass under the first detection mechanism 6 every 120° rotation, and the first detection mechanism 6 can determine whether the blade 52 is missing or damaged based on the output pulse time interval. The switch sensor of this embodiment can use a sensor that can detect metal, etc. As a preferred embodiment, the sensing end of the first detection mechanism 6 of this embodiment is preferably facing the tip of the blade 52, so that it can better determine whether the blade 52 is missing.

[0056] like Figure 6 , Figure 7 As shown, in a further specific embodiment, the present invention also includes an anti-collision mechanism 7 and a second detection mechanism 8, wherein the anti-collision mechanism 7 is rotatably mounted on the chassis 1, and the second detection mechanism 8 is mounted on the chassis 1, and the detection end of the second detection mechanism 8 faces the anti-collision mechanism 7, for detecting the rotation angle of the anti-collision mechanism 7.

[0057] The second detection mechanism 8 of this embodiment uses an angle sensor. This setting enables the lawn mower to perform a collision test on the obstacle through the anti-collision mechanism 7 when facing an obstacle. If the anti-collision mechanism 7 bends a certain angle after hitting the obstacle and can pass over the obstacle, the second detection mechanism 8 transmits a signal to the control system according to the angle, and the control system controls the cutter 5 to rise to a set angle, so as to pass over the obstacle and avoid the blade 52 directly hitting the obstacle and causing damage to the blade 52. It should be noted that although the control system is not mentioned in the claims of the present invention, the use of a control system on a lawn mower is a conventional prior art, so it will not be described in detail.

[0058] like Figure 6 , Figure 7 As shown, in a further specific embodiment, the anti-collision mechanism 7 includes a mounting frame 71, a rotating shaft 72 and a plurality of anti-collision members 73, the mounting frame 71 is installed on the chassis 1, the rotating shaft 72 passes through the mounting frame 71, and the plurality of anti-collision members 73 are respectively installed on the rotating shaft 72.

[0059] When the anti-collision member 73 hits an obstacle, it will drive the rotating shaft 72 to rotate. The second detection mechanism 8 determines the height of the obstacle according to the rotation angle of the rotating shaft 72, so that the tool 5 can rise to avoid the obstacle.

[0060] like Figure 1 , Figure 2 As shown, in a further specific embodiment, the mounting frame 71 is installed on the top of the chassis 1, and the chassis 1 has a plurality of through slots 11 for passing the anti-collision member 73, and the top of the anti-collision member 73 extends into the through slots 11 and is fixedly installed on the rotating shaft 72.

[0061] This arrangement allows the anti-collision member 73 to rotate in the through slot 11. It should be noted that when no obstacle is touched, the anti-collision member 73 is parallel to the ground. The mounting frame 71 of this embodiment is arranged on the top of the chassis 1 to prevent the second detection mechanism 8 from being disturbed by grass and affecting its detection accuracy.

[0062] It is understandable that the present invention can also set an elastic member at the anti-collision member 73, the first end of the elastic member is connected to the base, and the second end is connected to one of the anti-collision members 73, and a pressure is always applied to the anti-collision member 73, so that the anti-collision member 73 is at a set angle with the ground, and the preferred angle is 90° vertical to the ground. When the anti-collision member 73 contacts with obstacles such as stones and is blocked, the resistance is greater than the force of the elastic member, and the anti-collision member will rotate. In addition, the anti-collision mechanism 7 of the present invention can also comb the grass crushed by the lawn mower wheel, so that it can be in a vertical state and easier to be cut by the cutter 5.

[0063] In other specific embodiments, the mounting frame 71 may also be installed only on the bottom of the chassis 1, so that the chassis 1 may not be provided with the through slot 11, but in this case, the second detection mechanism 8 may be affected by other debris and the detection accuracy may be affected.

[0064] like Figure 3 , Figure 4 As shown, in a further specific embodiment, the present invention further includes a lifting mechanism 9, which is installed on the mounting seat 2, and the output end is connected to the air guide seat 3, and is used to drive the air guide seat 3 to move up and down.

[0065] When encountering an obstacle, the lifting mechanism 9 drives the tool 5 to rise through the air guide seat 3 to avoid collision and damage to the tool 5. It should be noted that the first detection mechanism 6 in this embodiment has a certain effective detection distance. As a preferred embodiment, when performing detection, the lifting mechanism 9 drives the tool 5 to rise to the top. At this time, the first detection mechanism 6 can detect the existence of the tool 5. When the lifting mechanism 9 drives the tool 5 away from the first detection mechanism 6 by a certain distance, the first detection mechanism 6 cannot detect the existence of the tool 5.

[0066] like Figure 3 , Figure 4 As shown, in a further specific embodiment, the lifting mechanism 9 includes a lifting motor 91, a synchronous belt 92, a plurality of synchronous wheels 93 and at least two transmission assemblies 94, the synchronous belt 92 is sleeved on the plurality of synchronous wheels 93, the lifting motor 91 and the transmission assembly 94 are respectively installed on the mounting seat 2, the output end of the lifting motor 91 is connected to one of the synchronous wheels 93, each of the transmission assemblies 94 is respectively connected to one of the synchronous wheels 93, and the air guide seat 3 is connected to the transmission assembly 94. It can be understood that the lifting mechanism 9 of the present invention can also be provided with a plurality of idle wheels between the synchronous wheels 93 for tightening the synchronous belt 92.

[0067] The lifting motor 91 of the present embodiment drives a plurality of synchronous wheels 93 to rotate via a synchronous belt 92 , and the synchronous wheels 93 drive a transmission assembly 94 to rotate, thereby driving the air guide seat 3 to be lifted and lowered along the transmission assembly 94 .

[0068] As a preferred embodiment, the transmission assembly 94 of this embodiment includes a screw rod 941, a nut seat 942 and a fixed frame 943, the screw rod 941 is rotatably mounted on the fixed frame 943, the screw rod 941 is sleeved with the synchronous wheel 93, the nut seat 942 is sleeved on the screw rod 941, the nut seat 942 is installed with a bracket 31, the first end of the bracket 31 is connected to the nut seat 942, and the second end of the bracket 31 is connected to the air guide seat 3. This embodiment drives the air guide seat 3 to rise and fall through the cooperation of the screw rod 941 and the nut seat 942, and has a simple structure and strong stability. It should be noted that bearings are respectively provided at both ends of the screw rod 941 of this embodiment, one bearing is installed on the mounting seat 2, and the other bearing is installed on the fixed frame 943.

[0069] In other specific embodiments, other transmission modes may be used to drive the air guide seat 3 to be lifted or lowered, such as a gear rack meshing transmission mode, where a rack is installed on the side of the air guide seat 3, and a gear is installed at the output end of the lifting motor 91, and the gear and the rack are meshed to drive the air guide seat 3 to be lifted or lowered. There are many mechanical structures that can realize this lifting mode in other fields, and they will not be listed one by one here.

[0070] Example 2

[0071] A method for detecting a cutter of a cutter disc, applied to the cutter disc of a lawn mower, comprises the following steps:

[0072] S1, the rotary motor 4 drives the tool 5 to rotate;

[0073] S2, the lifting mechanism 9 drives the tool 5 to rise to a position where the first detection mechanism 6 can sense it. The first detection mechanism 6 determines whether there is a blade 52 according to the time interval of the output pulses. When the time intervals of the output pulses are the same, the blade 52 is intact. When the time intervals of the output pulses are different, the blade 52 is missing or damaged.

[0074] S3, the first detection mechanism 6 transmits the signal to the control system, and the control system determines whether the blade 52 is intact. When the blade 52 is intact, the lawn mower performs mowing. When the blade 52 is incomplete, the judgment result is transmitted to the user's mobile phone or other signal receiving device to remind the user to replace the blade 52.

[0075] This embodiment can detect the blade 5 of the lawn mower through the detection method, so that the first detection mechanism 6 can feed back the situation to the device receiving the signal, and notify the user to replace the blade 52 in time to avoid the grass being not cleaned cleanly and needing to be cleaned repeatedly. It should be noted that when the lifting mechanism 9 drives the blade 5 to rise to the top, the first detection mechanism 6 can detect the existence of the blade 5. When the lifting mechanism 9 drives the blade 5 to descend to a certain position, the first detection mechanism 6 cannot detect the existence of the blade 5.

[0076] Example 3

[0077] A method for climbing over obstacles of a cutter disc, applied to the cutter disc of a lawn mower, comprises the following steps:

[0078] S1, the anti-collision mechanism 7 collides with an obstacle and determines whether it can cross the obstacle. If it cannot cross the obstacle, it will take a detour. If it can cross the obstacle, the second detection mechanism 8 determines the rotation angle of the anti-collision mechanism 7 and transmits the result to the control system;

[0079] S2, the control system adjusts the height of the tool 5 according to the rotation angle of the anti-collision mechanism 7. When the rotation angle is smaller, the height of the tool 5 from the ground is lower, and when the rotation angle is larger, the height of the tool 5 from the ground is higher;

[0080] Among them, S2 drives the tool 5 to move up and down through the lifting mechanism 9.

[0081] This embodiment can determine the height of the obstacle through the obstacle climbing method, so as to control the tool 5 to rise and fall, so as to climb over the obstacle. The method is simple and avoids damage to the blade 52.

[0082] Descriptions such as "specific examples" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are contradictory.

[0083] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may make changes, modifications, substitutions and variations to the above embodiments. As long as they conform to the purpose of the present invention, they shall be within the scope of protection required by the present invention, such as different combinations of specific embodiments and different combinations of distinguishing technical features.

Claims

1. A lawn mower blade, comprising a chassis (1), a mounting seat (2) and an air guide seat (3), wherein the mounting seat (2) is mounted on the top of the chassis (1), a first end of the air guide seat (3) penetrates the chassis (1) and extends into the mounting seat (2), and a rotating motor (4) is mounted on the air guide seat (3), characterized in that: The invention comprises a cutter (5) and a first detection mechanism (6), wherein the cutter (5) is mounted on the second end of the air guide seat (3), the output end of the rotating motor (4) is connected to the cutter (5) and is used to drive the cutter (5) to rotate to cut grass, and the first detection mechanism (6) is mounted on the chassis (1), the detection end of the first detection mechanism (6) faces the cutter (5), and when the rotating motor (4) drives the cutter (5) to rotate, the first detection mechanism (6) detects the integrity of the cutter (5).

2. The lawn mower cutter disc according to claim 1, characterized in that: The first detection mechanism (6) comprises a switch sensor, the tool (5) comprises a tool holder (51) and at least two blades (52), the at least two blades (52) being equidistantly spaced and mounted around the tool holder (51), and the sensing end of the switch sensor is directed toward the blades (52) for detecting the integrity of the blades (52).

3. The lawn mower cutter disc according to claim 1, characterized in that: It also comprises an anti-collision mechanism (7) and a second detection mechanism (8), wherein the anti-collision mechanism (7) is rotatably mounted on the chassis (1), and the second detection mechanism (8) is mounted on the chassis (1), and the detection end of the second detection mechanism (8) faces the anti-collision mechanism (7) and is used to detect the rotation angle of the anti-collision mechanism (7).

4. The lawn mower cutter disc according to claim 3, characterized in that: The anti-collision mechanism (7) comprises a mounting frame (71), a rotating shaft (72) and a plurality of anti-collision members (73); the mounting frame (71) is mounted on the chassis (1); the rotating shaft (72) passes through the mounting frame (71); and the plurality of anti-collision members (73) are respectively mounted on the rotating shaft (72).

5. The lawn mower cutter disc according to claim 4, characterized in that: The mounting frame (71) is mounted on the top of the chassis (1); the chassis (1) is provided with a plurality of through slots (11) for passing the anti-collision member (73); the top of the anti-collision member (73) extends into the through slot (11) and is fixedly mounted on the rotating shaft (72).

6. The lawn mower cutter disc according to claim 1, characterized in that: It also includes a lifting mechanism (9) which is mounted on the mounting seat (2), the output end of which is connected to the air guide seat (3) and is used to drive the air guide seat (3) to move up and down.

7. The lawn mower cutter disc according to claim 6, characterized in that: The lifting mechanism (9) comprises a lifting motor (91), a synchronous belt (92), a plurality of synchronous wheels (93) and at least two transmission assemblies (94); the synchronous belt (92) is sleeved on the plurality of synchronous wheels (93); the lifting motor (91) and the transmission assemblies (94) are respectively mounted on the mounting seat (2); the output end of the lifting motor (91) is connected to one of the synchronous wheels (93); each of the transmission assemblies (94) is respectively connected to one of the synchronous wheels (93); and the air guide seat (3) is connected to the transmission assemblies (94).

8. The lawn mower cutter disc according to claim 7, characterized in that: The transmission assembly (94) comprises a screw rod (941), a nut seat (942) and a fixing frame (943); the screw rod (941) is rotatably mounted on the fixing frame (943); the screw rod (941) is sleeved with the synchronous wheel (93); the nut seat (942) is sleeved on the screw rod (941); a bracket (31) is mounted on the nut seat (942); a first end of the bracket (31) is connected to the nut seat (942); and a second end of the bracket (31) is connected to the air guide seat (3).

9. A method for detecting a tool (5) of a cutter disc, characterized in that: The lawn mower cutter disc according to claims 1 to 8 comprises the following steps: S1, the rotary motor (4) drives the tool (5) to rotate; S2, the lifting mechanism (9) drives the tool (5) to rise to a position where the first detection mechanism (6) can sense it, and the first detection mechanism (6) determines whether there is a blade (52) according to the time interval of the output pulses. When the time intervals of the output pulses are the same, the blade (52) is intact; when the time intervals of the output pulses are different, the blade (52) is missing or damaged; S3, the first detection mechanism (6) transmits a signal to the control system, and the control system makes a judgment based on whether the blade (52) is intact. When the blade (52) is intact, the lawn mower performs a mowing operation. When the blade (52) is incomplete, the judgment result is transmitted to the user's mobile phone or other signal receiving device to remind the user to replace the blade (52).

10. A method for climbing over obstacles with a cutter head, characterized in that: The lawn mower cutter disc according to claims 1 to 8 comprises the following steps: S1, the anti-collision mechanism (7) collides with an obstacle and determines whether the obstacle can be crossed. If the obstacle cannot be crossed, the vehicle takes a detour. If the obstacle can be crossed, the second detection mechanism (8) determines the rotation angle of the anti-collision mechanism (7) and transmits the result to the control system; S2, the control system adjusts the height of the tool (5) according to the rotation angle of the anti-collision mechanism (7), when the rotation angle is smaller, the height of the tool (5) from the ground is lower, and when the rotation angle is larger, the height of the tool (5) from the ground is higher; Wherein, S2 drives the tool (5) to move up and down through the lifting mechanism (9).

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