Mowing robot cutting device and height adjusting method

Abstract

The invention discloses a mowing robot cutting device and a height adjusting method, and relates to the technical field of mowing robots, the mowing robot cutting device comprises a double-head cutting motor, a second output shaft of the double-head cutting motor is connected with a cutting cutterhead, and a first output shaft of the double-head cutting motor is connected with a height adjusting mechanism through a transmission assembly; the double-head cutting motor is connected with the transmission assembly through the electronic clutch, and the electronic clutch is used for disconnecting the double-head cutting motor and the transmission assembly after height adjustment is completed. When the electronic clutch is connected with the double-head cutting motor and the height adjusting mechanism, the double-head cutting motor can serve as a power source of the height adjusting mechanism, an independent height adjusting motor is omitted, the installation space needed by the cutting device is remarkably reduced, and miniaturization of the mowing robot is facilitated.

Description

Technical Field

[0001] This invention relates to the field of robotics, and more specifically, to a lawnmower robot cutting device. Furthermore, this invention also provides a height adjustment method for the aforementioned lawnmower robot cutting device. Background Technology

[0002] The lawnmower robot is equipped with a cutting mechanism and a height adjustment mechanism. The cutting mechanism is used to drive the blade to cut and remove grass, and the height adjustment mechanism is used to adjust the cutting height of the blade.

[0003] In existing lawnmower robots, the cutting mechanism and the height adjustment mechanism are driven by a cutting motor and a height adjustment motor, respectively. The separate height adjustment motor increases the overall size of the power mechanism, which is not conducive to the miniaturization of the cutting robot.

[0004] In conclusion, how to reduce the size of the cutting device for lawn mowers is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a lawn mowing robot cutting device that uses an electronic clutch to connect a dual-head cutting motor and a height adjustment mechanism, requiring little installation space and facilitating the miniaturization of the lawn mowing robot.

[0006] In addition, the present invention also provides a height adjustment method for the above-mentioned lawn mowing robot cutting device.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A lawnmower robot cutting device includes a dual-head cutting motor. The second output shaft of the dual-head cutting motor is connected to a cutting disc. The first output shaft of the dual-head cutting motor is connected to a height adjustment mechanism via a transmission assembly. The dual-head cutting motor is connected to the transmission assembly via an electronic clutch. The electronic clutch is used to disconnect the connection between the dual-head cutting motor and the transmission assembly after height adjustment is completed.

[0009] Preferably, the height adjustment mechanism includes a detachably connected height adjustment mechanism base and a height adjustment mechanism top cover. A height adjustment threaded shaft is provided between the height adjustment mechanism top cover and the height adjustment mechanism base. A height adjustment threaded sleeve is provided on the external thread of the height adjustment threaded shaft. The height adjustment threaded sleeve is connected to the mounting bracket of the dual-head cutting motor. The mounting bracket is slidably connected to the height adjustment mechanism top cover.

[0010] Preferably, the transmission assembly includes a height adjustment drive gear, a height adjustment driven gear, and at least one set of height adjustment intermediate gears. The height adjustment driven gear is integrally formed with the height adjustment threaded sleeve. The height adjustment drive gear and the height adjustment intermediate gears are both mounted on the mounting bracket. The height adjustment drive gear is connected to the top output shaft of the dual-head cutting motor through the electronic clutch.

[0011] The height adjustment intermediate gear set includes a first height adjustment intermediate gear and a second height adjustment intermediate gear arranged coaxially. The first height adjustment intermediate gear is meshed with the height adjustment drive gear, and the second height adjustment intermediate gear is meshed with the height adjustment threaded sleeve.

[0012] Preferably, it also includes a gearbox cover, which is detachably connected to the top of the mounting bracket to form a gearbox body, and the height adjustment drive gear, the height adjustment intermediate gear set and the height adjustment threaded sleeve are all installed in the gearbox body.

[0013] Preferably, it also includes a lower motor housing, which is detachably connected to the bottom of the mounting bracket to form a motor housing, and the dual-head cutting motor is installed inside the motor housing.

[0014] Preferably, the height adjustment mechanism base is provided with at least two guide rails along the height direction, the mounting bracket is provided with a slider installed in the guide rails, and the guide rails are symmetrically arranged about the axis of the dual-head cutting motor.

[0015] Preferably, the slider includes a sliding part connected to the mounting bracket, and the sliding part has an inclined claw part at one end that is relatively far from the mounting bracket. Both the sliding part and the claw part are slidably disposed within the guide rail.

[0016] Preferably, it also includes a control device and a height detection component for detecting the current cutting height, wherein one of the transmitter and receiver of the height detection component is disposed on the upper cover of the height adjustment mechanism, and the other is disposed on the upper cover of the gearbox of the height adjustment threaded sleeve;

[0017] The height detection component, the dual-head cutting motor, and the electronic clutch are all signal-connected to the control device.

[0018] Preferably, the height adjustment mechanism base is fitted into the mounting hole at the bottom of the vehicle frame, the height adjustment mechanism base is fitted with a sealing ring, the bottom of the height adjustment mechanism base is detachably connected to the sealing ring pressure plate, the upper sealing port of the sealing ring abuts against the bottom surface of the vehicle frame, and the lower sealing port of the sealing ring abuts against the sealing ring pressure plate.

[0019] A height adjustment method for the lawnmower cutting device described in any one of the preceding claims, comprising:

[0020] Input the target cutting height into the control device of the cutting device;

[0021] When the real-time cutting height is the same as the target cutting height, the dual-head cutting motor is controlled to drive the cutting disc to perform the grass-cutting task; when the real-time cutting height is different from the target cutting height, the electronic clutch is controlled to engage, so that the dual-head cutting motor is connected to the transmission assembly, so that the dual-head cutting motor outputs torque to the height adjustment mechanism through the transmission assembly.

[0022] Once the height adjustment mechanism has reached its displacement position, the electronic clutch is disengaged, causing the dual-head cutting motor to separate from the height adjustment mechanism.

[0023] The lawnmower cutting device provided by this invention uses an electronic clutch to connect a dual-head cutting motor and a height adjustment mechanism, so that the dual-head cutting motor can be used as the power source for the height adjustment mechanism, eliminating the need for a separate height adjustment motor, significantly reducing the installation space required for the cutting device, and facilitating the miniaturization of the lawnmower robot.

[0024] In addition, the present invention also provides a height adjustment method for the above-mentioned lawn mowing robot cutting device. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0026] Figure 1 A schematic diagram of a specific embodiment of the lawnmower cutting device provided by the present invention;

[0027] Figure 2 for Figure 1 An explosion diagram;

[0028] Figure 3 A schematic diagram of the height adjustment mechanism and transmission components;

[0029] Figure 4 This is a structural diagram of the mounting bracket;

[0030] Figure 5 This is a schematic diagram showing the assembly of the cutting device on the lawnmower robot.

[0031] Figures 1-5 middle:

[0032] 11-Double-head cutting motor; 12-Motor lower housing; 2-Electronic clutch; 31-Mounting bracket; 311-Slider; 32-Height adjustment drive gear; 33-Height adjustment intermediate gear set; 34-Reduction gearbox cover; 41-Height adjustment threaded shaft; 42-Height adjustment threaded sleeve; 43-Height adjustment mechanism base; 431-Guide rail; 44-Height adjustment mechanism cover; 51-Height sensor; 52-Magnetic block; 6-Sealing ring; 7-Sealing ring pressure plate; 8-Cutting blade disc. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] The core of this invention is to provide a lawn mowing robot cutting device that uses an electronic clutch to connect a dual-head cutting motor and a height adjustment mechanism, requiring little installation space and facilitating the miniaturization of lawn mowing robots.

[0035] In addition, the present invention also provides a height adjustment method for the above-mentioned lawn mowing robot cutting device.

[0036] The lawnmower cutting device provided by the present invention includes a dual-head cutting motor 11. The bottom of the dual-head cutting motor 11 is connected to the cutting disc 8. The top of the dual-head cutting motor 11 is connected to the height adjustment mechanism through a transmission component. The dual-head cutting motor 11 is connected to the transmission component through an electronic clutch 2. The electronic clutch 2 is used to disconnect the connection between the dual-head cutting motor 11 and the transmission component after the height adjustment is completed.

[0037] Please refer to Figure 1 The dual-head cutting motor 11 has output shafts at both ends. Considering that the height adjustment mechanism is installed inside the frame of the lawnmower robot and the cutting disc 8 is exposed outside the frame, such as... Figure 5 As shown, the first output shaft at the top of the dual-head cutting motor 11 is connected to the height adjustment mechanism, and the second output shaft at the bottom of the dual-head cutting motor 11 is connected to the cutting disc 8.

[0038] The first output shaft at the top of the dual-head cutting motor 11 is connected to the height adjustment mechanism via an electronic clutch 2 and a transmission assembly. The electronic clutch 2 can be configured as an electromagnetic clutch, an electric clutch, etc. The specific connection method between the dual-head cutting motor 11 and the electronic clutch 2 can be determined according to the type and model of the electronic clutch 2 in actual production.

[0039] The connection method between the second output shaft of the dual-head cutting motor 11 and the cutting disc 8 can refer to the connection method between the cutting motor and the cutting disc 8 of existing lawnmower robots.

[0040] To improve the sealing performance of the cutting end of the dual-head cutting motor 11, please refer to... Figure 2 The height adjustment mechanism base 43 is fitted into the mounting hole at the bottom of the frame. The height adjustment mechanism base 43 is fitted with a sealing ring 6. The bottom of the height adjustment mechanism base 43 is detachably connected to the sealing ring pressure plate 7. The upper sealing port of the sealing ring 6 abuts against the bottom surface of the frame, and the lower sealing port of the sealing ring 6 abuts against the sealing ring pressure plate 7.

[0041] The sealing ring 6 prevents external rainwater, dust, and other substances from seeping into the motor through the axial gap of the double-head cutting motor 11, which helps to improve the sealing performance and service life of the double-head cutting motor 11.

[0042] The height adjustment mechanism is used to adjust the height of the dual-head cutting motor 11, and then adjust the height of the cutting disc 8 connected to the dual-head cutting motor 11, thereby adjusting the cutting height of the cutting device; the specific structure of the height adjustment mechanism can be determined by referring to the height adjustment mechanism of the existing lawn mowing robot.

[0043] To improve the motion stability of the height adjustment mechanism, it is preferable to set the height adjustment mechanism to slide with the frame and other structures through sliding pairs such as guide rail slider mechanism, so as to avoid the double-head cutting motor 11 from moving left and right during the lifting process, which would affect the accuracy and precision of the cutting height adjustment.

[0044] When the cutting height needs to be adjusted, the electronic clutch 2 connects the dual-head cutting motor 11 and the height adjustment mechanism. The dual-head cutting motor 11 drives the height adjustment mechanism to rise and fall relative to the frame, thereby driving the dual-head cutting motor 11 and the cutting disc 8 connected to it to rise and fall, thus completing the adjustment of the cutting height.

[0045] After the cutting height is adjusted to the correct position, the electronic clutch 2 is controlled to disconnect the connection between the dual-head cutting motor 11 and the height adjustment mechanism to prevent the cutting height of the cutting disc 8 from changing during the cutting process.

[0046] In this embodiment, the dual-head cutting motor 11 and the height adjustment mechanism are connected by an electronic clutch 2, so that the dual-head cutting motor 11 can be used as the power source of the height adjustment mechanism, eliminating the need for a separate height adjustment motor, significantly reducing the installation space required for the cutting device, and facilitating the miniaturization of the lawnmower robot.

[0047] Based on the above embodiments, the height adjustment mechanism includes a detachably connected height adjustment mechanism base 43 and a height adjustment mechanism upper cover 44. A height adjustment threaded shaft 41 is provided between the height adjustment mechanism upper cover 44 and the height adjustment mechanism base 43. A height adjustment threaded sleeve 42 is provided on the external thread of the height adjustment threaded shaft 41. The height adjustment threaded sleeve 42 is connected to the mounting bracket 31 of the double-head cutting motor 11. The mounting bracket 31 is slidably connected to the height adjustment mechanism upper cover 44.

[0048] The upper cover 44 of the height adjustment mechanism and the base 43 of the height adjustment mechanism are connected by detachable connection methods such as bolt connection and pin connection, which not only facilitates the installation of the height adjustment threaded shaft 41 and the height adjustment threaded sleeve 42, but also helps to prevent dust and protect the height adjustment threaded shaft 41 and the height adjustment threaded sleeve 42, and helps to improve the service life of both.

[0049] In this embodiment, the rotation of the adjusting threaded shaft 41 and the adjusting threaded sleeve 42 is converted into the movement of the adjusting threaded sleeve 42 along the axial direction of the adjusting threaded shaft 41 by utilizing the threaded pair of the adjusting threaded shaft 41 and the adjusting threaded sleeve 42. The structure is simple and the stroke control accuracy is high.

[0050] Based on the above embodiments, the structure of the transmission component is defined. The transmission component includes a height adjustment drive gear 32, a height adjustment driven gear, and at least one set of height adjustment intermediate gear sets 33. The height adjustment driven gear is integrally set with the height adjustment threaded sleeve 42. The height adjustment drive gear 32 and the height adjustment intermediate gear sets 33 are both mounted on the mounting bracket 31. The height adjustment drive gear 32 is connected to the top output shaft of the double-head cutting motor 11 through the electronic clutch 2.

[0051] The height adjustment intermediate gear set 33 includes a first height adjustment intermediate gear and a second height adjustment intermediate gear arranged coaxially. The first height adjustment intermediate gear is meshed with the height adjustment drive gear 32, and the second height adjustment intermediate gear is meshed with the height adjustment threaded sleeve 42.

[0052] The number of intermediate gear sets 33 and the transmission ratio of each intermediate gear set 33 are determined based on the actual operating speed of the double-head cutting motor 11 in actual use, so as to reduce the speed of the adjusting threaded sleeve 42 through the transmission component to the preset adjusting speed, which is usually set to 60-100 rpm.

[0053] At the same time, when increasing the number of intermediate gear sets 33, the installation space reserved for the cutting device by the lawnmower robot also needs to be considered. Appropriately increasing the number of intermediate gear sets 33 can reduce the size of the driven gear within a certain range, but too many intermediate gear sets 33 will also increase the mass of the transmission components and the required installation space.

[0054] When the electronic clutch 2 is engaged with the dual-head cutting motor 11, the dual-head cutting motor 11 drives the height adjustment drive gear 32 to rotate through the electronic clutch 2. The height adjustment drive gear 32 drives the height adjustment intermediate gear set 33 to rotate, and the height adjustment intermediate gear set 33 drives the height adjustment threaded sleeve 42 to rotate, thereby causing the height adjustment threaded sleeve 42 to move up and down along the axial direction of the height adjustment threaded shaft 41.

[0055] In this embodiment, the transmission component uses gear transmission to transmit the torque of the dual-head cutting motor 11 to the height adjustment threaded sleeve 42. Compared with synchronous belt transmission, gear transmission has a more precise transmission ratio, which can both reduce the speed of the dual-head cutting motor 11 and ensure the accuracy of the cutting height adjustment mechanism. Compared with worm gear pairs, gear transmission has a more compact structure, which can reduce the overall size and weight of the transmission component.

[0056] Preferably, it also includes a gearbox cover 34, which is detachably connected to the top of the mounting bracket 31 to form a gearbox body. The height adjustment drive gear 32, the height adjustment intermediate gear set 33 and the height adjustment threaded sleeve 42 are all installed in the gearbox body.

[0057] On the one hand, the gearbox housing can prevent external moisture and dust from entering the transmission components, which helps to ensure the reduction ratio of the transmission components; on the other hand, the gearbox housing can protect the transmission components.

[0058] Preferably, it also includes a lower motor housing 12, which is detachably connected to the bottom of the mounting bracket 31 to form a motor housing. The double-head cutting motor 11 is installed inside the motor housing to protect the double-head cutting motor 11 and prevent it from being deformed or even malfunctioning due to collisions during operation.

[0059] The gearbox cover 33 and the mounting bracket 31, as well as the motor lower housing 12 and the mounting bracket 31, can be connected by detachable methods such as bolt connection, pin connection, and snap-fit ​​connection. The structure, size, and quantity of the connecting parts are determined according to the actual production needs and will not be elaborated here.

[0060] Based on the above embodiments, the height adjustment mechanism base 43 can be provided with at least two guide rails 431 along the height direction, and the mounting bracket 31 is provided with a slider 311 installed in the guide rails 431. The guide rails 431 are symmetrically arranged about the axis of the double-head cutting motor 11.

[0061] Please refer to Figure 3 The double-head cutting motor 11 has a transmission component on its left side. The mounting bracket 31 has sliders 311 on the front and rear sides of the double-head cutting motor 11. The guide rail 431 of the height adjustment mechanism base 43 is set to correspond to the sliders 311 of the mounting bracket 31.

[0062] In this embodiment, the sliding cooperation between the slider 311 and the guide rail 431 is used to limit the lifting and lowering of the mounting bracket 31 relative to the frame, so as to avoid horizontal deviation of the mounting bracket 31 and the dual-head cutting motor 11 during the height adjustment process, which would cause the lifting height of the lifting mechanism to be inconsistent with the lifting height of the cutting disc 8, thus affecting the height adjustment accuracy and precision of the cutting device.

[0063] For preferred options, please refer to [the following]. Figure 4 The slider 311 includes a sliding part connected to the mounting bracket 31. The end of the sliding part that is relatively far away from the mounting bracket 31 is provided with an inclined claw part. Both the sliding part and the claw part are slidably disposed in the guide rail 431.

[0064] The claw portion forms a barbed claw structure relative to the sliding portion, which not only increases the contact area between the slider 311 and the guide rail 431 and improves the stability of the sliding pair, but also further restricts the horizontal movement of the mounting bracket 31 and the double-headed cutting motor 11 in the normal direction of the claw portion, thus improving the reliability of the sliding pair.

[0065] Based on the above embodiments, it also includes a control device and a height detection component for detecting the current cutting height. One of the transmitter and receiver of the height detection component is located on the upper cover 44 of the height adjustment mechanism, and the other is located on the upper cover 34 of the gearbox of the height adjustment threaded sleeve 42.

[0066] The height detection component, the dual-head cutting motor 11, and the electronic clutch 2 are all connected to the control device via signal.

[0067] The working principle of the height detection component is not limited; it can be set as an electro-optical distance sensor, an electromagnetic distance sensor, etc.; for example, please refer to... Figure 2 The height detection component includes a height sensor 51 and a magnetic block 52. The height sensor 51 is located on the inner surface of the upper cover 44 of the height adjustment mechanism, and the magnetic block 52 is located on the upper surface of the upper cover 34 of the gearbox.

[0068] In this embodiment, the height detection component is located on the upper cover 44 of the height adjustment mechanism and the upper cover 34 of the gearbox. The cutting height of the cutting disc 8 is obtained by detecting the height of the height adjustment mechanism. Compared with the height detection component located at the bottom of the frame and directly obtaining the cutting height of the cutting disc 8, the height detection component is not exposed, which helps to protect the height detection component and extend its service life.

[0069] Alternatively, one of the transmitter and receiver of the height detection component can be placed on the height adjustment mechanism base 43, and the other can be placed on the mounting bracket 31. The height of the height adjustment mechanism can be obtained by detecting the height of the mounting bracket 31 relative to the height adjustment mechanism base 43.

[0070] In addition to the aforementioned lawnmower cutting device, the present invention also provides a height adjustment method for the lawnmower cutting device disclosed in the above embodiments, the height adjustment method comprising:

[0071] Step S1: Input the target cutting height into the control device of the cutting device;

[0072] Step S2: When the real-time cutting height is the same as the target cutting height, control the dual-head cutting motor 11 to drive the cutting disc 8. When the real-time cutting height is different from the target cutting height, control the electronic clutch 2 to engage, so that the dual-head cutting motor 11 is connected to the transmission assembly, so that the dual-head cutting motor 11 outputs torque to the height adjustment mechanism through the transmission assembly.

[0073] Step S3: After the height adjustment mechanism reaches its displacement position, the electronic clutch 2 is disengaged, causing the dual-head cutting motor 11 to separate from the height adjustment mechanism.

[0074] It is necessary to explain steps S1 and S3. For a specific model of lawn mowing robot, the cutting height of the cutting disc 8 corresponds one-to-one with the height of the height adjustment mechanism. When the height adjustment mechanism is in place, the real-time cutting height of the cutting disc 8 is equal to the input target cutting height.

[0075] It should be noted that in step S2, the real-time cutting height of the cutting disc 8 can be determined by the height detection component or by calculating the movement stroke and direction of the height adjustment mechanism. The height detection component can directly detect the real-time cutting height of the cutting disc 8 or indirectly obtain the real-time cutting height of the cutting disc 8 by detecting the real-time height of the height adjustment mechanism.

[0076] It is necessary to explain steps S2 and S3 that the engagement and disengagement of the electronic clutch 2 can be set to manual input control or automatic control. For example, the electronic clutch 2 can be automatically engaged after the user inputs and determines the target cutting height via a timer.

[0077] To ensure the safe operation of the dual-head cutting motor 11, it is understood that when engaging and disengaging the electronic clutch 2, it is preferable to control the dual-head cutting motor 11 to reduce its speed to zero.

[0078] It should be noted that the first and second output shafts, the first and second height adjustment intermediate gears mentioned in this application are only used to distinguish the different positions and do not contain any limitation on the order.

[0079] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0080] The above provides a detailed description of the lawnmower robot cutting device and height adjustment method provided by this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A lawnmower robot cutting device, characterized in that, Includes a dual-head cutting motor (11), the second output shaft of which is connected to the cutting disc (8), the first output shaft of which is connected to the height adjustment mechanism via a transmission assembly, and the dual-head cutting motor (11) is connected to the transmission assembly via an electronic clutch (2). The electronic clutch (2) is used to disconnect the connection between the dual-head cutting motor (11) and the transmission assembly after the height adjustment is completed.

2. The lawnmower cutting device according to claim 1, characterized in that, The height adjustment mechanism includes a detachably connected height adjustment mechanism base (43) and a height adjustment mechanism top cover (44). A height adjustment threaded shaft (41) is provided between the height adjustment mechanism top cover (44) and the height adjustment mechanism base (43). A height adjustment threaded sleeve (42) is provided on the external thread of the height adjustment threaded shaft (41). The height adjustment threaded sleeve (42) is connected to the mounting bracket (31) of the double-head cutting motor (11). The mounting bracket (31) is slidably connected to the height adjustment mechanism top cover (44).

3. The lawnmower cutting device according to claim 2, characterized in that, The transmission assembly includes a height adjustment drive gear (32), a height adjustment driven gear, and at least one set of height adjustment intermediate gears (33). The height adjustment driven gear is integrally formed with the height adjustment threaded sleeve (42). The height adjustment drive gear (32) and the height adjustment intermediate gears (33) are both mounted on the mounting bracket (31). The height adjustment drive gear (32) is connected to the top output shaft of the dual-head cutting motor (11) through the electronic clutch (2). The height adjustment intermediate gear set (33) includes a first height adjustment intermediate gear and a second height adjustment intermediate gear arranged coaxially. The first height adjustment intermediate gear is meshed with the height adjustment drive gear (32), and the second height adjustment intermediate gear is meshed with the height adjustment threaded sleeve (42).

4. The lawnmower cutting device according to claim 3, characterized in that, It also includes a gearbox cover (34), which is detachably connected to the top of the mounting bracket (31) to form a gearbox body. The height adjustment drive gear (32), the height adjustment intermediate gear set (33) and the height adjustment threaded sleeve (42) are all installed in the gearbox body.

5. The lawnmower cutting device according to claim 2, characterized in that, It also includes a lower motor housing (12), which is detachably connected to the bottom of the mounting bracket (31) to form a motor housing, and the double-headed cutting motor (11) is installed inside the motor housing.

6. The lawnmower cutting device according to any one of claims 2-5, characterized in that, The height adjustment mechanism base (43) is provided with at least two guide rails (431) along the height direction, and the mounting bracket (31) is provided with a slider (311) installed in the guide rail (431). The guide rail (431) is symmetrically arranged about the axis of the double-head cutting motor (11).

7. The lawnmower cutting device according to claim 6, characterized in that, The slider (311) includes a sliding part connected to the mounting bracket (31). The sliding part has an inclined claw part at one end that is relatively far away from the mounting bracket (31). Both the sliding part and the claw part are slidably disposed in the guide rail (431).

8. The lawnmower cutting device according to any one of claims 2-5, characterized in that, It also includes a control device and a height detection component for detecting the current cutting height, wherein one of the transmitter and receiver of the height detection component is located on the upper cover (44) of the height adjustment mechanism, and the other is located on the upper cover (34) of the gearbox of the height adjustment threaded sleeve (42). The height detection component, the dual-head cutting motor (11), and the electronic clutch (2) are all signal-connected to the control device.

9. The lawnmower cutting device according to any one of claims 2-5, characterized in that, The height adjustment mechanism base (43) is fitted into the mounting hole at the bottom of the frame. The height adjustment mechanism base (43) is fitted with a sealing ring (6). The bottom of the height adjustment mechanism base (43) is detachably connected to the sealing ring pressure plate (7). The upper sealing port of the sealing ring (6) abuts against the bottom surface of the frame, and the lower sealing port of the sealing ring (6) abuts against the sealing ring pressure plate (7).

10. A height adjustment method for the lawnmower robot cutting device according to any one of claims 1-9, characterized in that, include: Input the target cutting height into the control device of the cutting device; When the real-time cutting height is the same as the target cutting height, the dual-head cutting motor (11) is controlled to drive the cutting disc (8) to perform the grass cutting task; when the real-time cutting height is different from the target cutting height, the electronic clutch (2) is controlled to engage, so that the dual-head cutting motor (11) is connected to the transmission assembly, so that the dual-head cutting motor (11) outputs torque to the height adjustment mechanism through the transmission assembly; When the height adjustment mechanism reaches the desired position, the electronic clutch (2) is disengaged, causing the dual-head cutting motor (11) to separate from the height adjustment mechanism.

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