A quick-release self-locking intelligent mower with a cutter head

Abstract

The utility model discloses a kind of intelligent mower of quick detach self-locking cutterhead, it is related to mower technical field, including machine body;Output shaft, set in the bottom of the machine body, the output shaft is connected with the output end transmission of machine body internal drive motor;Base, fixed on the output shaft;Cutterhead assembly, including blade and the mounting seat for installing blade, the mounting seat is detachably connected on base;Manual unlocking mechanism, set on mounting seat, for the mounting seat and base fixed connection or disconnection;Centrifugal self-locking device, integrated in the base interior.The utility model passes through integrated electronic safety interlock system, through sensor and intelligent control, ensure that cutterhead is not correctly installed or locked when machine cannot start, and cutterhead state is monitored in real time in operation, immediately stop once abnormal, greatly improve the safety performance of product.

Description

Technical Field

[0001] This utility model relates to the field of lawnmower technology, specifically to an intelligent lawnmower with a quick-release and self-locking blade disc. Background Technology

[0002] As a common gardening tool, lawnmowers are widely used for lawn maintenance in homes, farms, and parks. With the advancement of technology, smart lawnmowers have gradually become the mainstream in the market, with their automation and safety continuously improving. Smart lawnmowers integrate functions such as path planning, obstacle recognition, and automatic charging, which not only significantly reduces the intensity of manual operation but also improves work efficiency and safety.

[0003] However, in terms of blade structure, most lawnmowers still use the traditional screw fixing method. When changing blades, tools are needed to disassemble the machine, which is cumbersome and time-consuming, affecting the user experience. Some quick-release blade structures are prone to loosening when rotating at high speed, resulting in reduced mowing effect or even damage to the equipment. In addition, some smart lawnmowers lack an effective safety interlock mechanism, and can still start even if the blade is not installed or locked correctly, posing a safety hazard. Therefore, a smart lawnmower with quick-release self-locking blade is needed to solve the existing shortcomings. Utility Model Content

[0004] The present invention aims to provide an intelligent lawnmower with a quick-release and self-locking blade disc to solve the above-mentioned technical problems.

[0005] In view of this, the present invention provides an intelligent lawnmower with a quick-release self-locking blade disc, comprising:

[0006] Organism;

[0007] An output shaft is located at the bottom of the machine body and is connected to the output end of a drive motor inside the machine body.

[0008] The base is fixed to the output shaft;

[0009] A cutter head assembly includes a blade and a mounting base for mounting the blade, the mounting base being detachably connected to a base;

[0010] A manual unlocking mechanism is provided on the mounting base for fixing or disconnecting the mounting base from the base;

[0011] A centrifugal self-locking device is integrated inside the base. When the output shaft drives the base to rotate and reach a preset speed, the centrifugal self-locking device is triggered to further lock the mounting base and the base in the circumferential and / or axial directions to enhance the connection stability of the two during operation.

[0012] Furthermore, the base has several guide grooves arranged in a circular array. The guide grooves are L-shaped. Several guide bars are fixed on the inner side of the mounting base. The guide grooves and guide bars are arranged in a circular array, and the vertical parts of the guide bars and guide grooves are matched to guide the mounting base to be movably fitted onto the base.

[0013] Furthermore, the manual unlocking mechanism includes:

[0014] At least one insert is movably mounted on the mounting base;

[0015] At least one guide block is movably mounted on the mounting base;

[0016] At least one traction rope is movably disposed within the mounting base, one end of which is fixedly connected to the insert block and the other end of which is fixedly connected to the guide block. The traction rope enables the insert block and the guide block to move synchronously.

[0017] A control ring is movably mounted on the mounting base. The end of the guide block away from the traction rope is fixedly connected to the control ring. The guide block restricts the control ring from moving axially along the mounting base.

[0018] The traction rope is also equipped with a reset component, which drives the guide block to insert into the bottom of the guide groove when the guide bar is fully inserted into the guide groove.

[0019] Furthermore, the end of the insert block away from the guide block is constructed with an inclined surface so that the insert block can be inserted into the guide groove, and the reset component includes a reset spring sleeved on the traction rope and fixed at both ends to the insert block and the mounting base respectively.

[0020] Furthermore, the centrifugal self-locking device includes:

[0021] At least one centrifugal pin is movably disposed in a radial channel inside the base;

[0022] A reset component, connected to the centrifugal pin, is used to keep the centrifugal pin in the retracted position when the drive motor is stationary or its speed is lower than a preset speed.

[0023] A locking hole is provided on the inner wall of the control ring.

[0024] Furthermore, when the drive motor speed reaches or exceeds the preset speed, the centrifugal pin overcomes the force of the reset component under the action of centrifugal force, moves outward along the radial channel and embeds into the locking hole, thereby locking the control ring circumferentially with the base.

[0025] Furthermore, there are four centrifugal pins, which are evenly distributed around the rotation axis of the base to ensure dynamic balance.

[0026] Furthermore, it also includes an electronic safety interlocking system, which includes:

[0027] A cutter head status sensor is used to detect whether the cutter head assembly has been correctly installed and locked;

[0028] The controller is electrically connected to the drive motor and the cutter head status sensor;

[0029] Furthermore, the controller is configured to only allow the output of a start command to the drive motor after receiving a lock signal from the cutter head status sensor.

[0030] Furthermore, the cutter head status sensor is a Hall sensor, and a magnet is provided on the control ring. When the cutter head assembly is in a locked state, the magnet and the Hall sensor are in a preset corresponding position.

[0031] Beneficial effects:

[0032] Compared with existing technologies, this intelligent lawnmower with quick-release self-locking blade has the following advantages:

[0033] I. This utility model, through the cooperative design of L-shaped guide groove and guide bar, combined with a manual unlocking mechanism, realizes tool-free quick disassembly and assembly of the cutter head, significantly improving maintenance and replacement efficiency.

[0034] Second, this utility model, through a dual locking mechanism of manual pin and centrifugal self-locking device, not only ensures the installation reliability under static conditions, but also effectively enhances the dynamic stability during high-speed operation.

[0035] Third, this utility model, through its integrated electronic safety interlock system, uses sensors and intelligent control to ensure that the machine cannot start if the cutter head is not properly installed or locked, and monitors the status of the cutter head in real time during operation. If any abnormality occurs, the machine will stop immediately, greatly improving the safety performance of the product. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0039] Figure 3This is a schematic diagram of the quick-release structure of the cutter head of this utility model;

[0040] Figure 4 This is a schematic diagram of the output shaft and its connecting parts of this utility model;

[0041] Figure 5 This is an exploded structural diagram of the manual unlocking mechanism of this utility model;

[0042] Figure 6 This is a schematic diagram of the electronic safety interlocking system control of this utility model.

[0043] In the diagram: 1. Machine body; 2. Output shaft; 3. Base; 4. Cutter head assembly; 401. Blade; 402. Mounting seat; 5. Manual unlocking mechanism; 501. Insert block; 502. Guide block; 503. Traction rope; 504. Control ring; 505. Return spring; 6. Centrifugal self-locking device; 601. Centrifugal pin; 602. Reset component; 603. Locking hole; 7. Guide groove; 8. Guide bar; 9. Cutter head status sensor; 10. Controller. Detailed Implementation

[0044] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0045] like Figure 1-6 As shown, this utility model provides a technical solution: a smart lawnmower with quick-release self-locking blade disc, including a body 1, an output shaft 2, a base 3, a blade disc assembly 4, a manual unlocking mechanism 5, a centrifugal self-locking device 6, and an electronic safety interlocking system. The body 1 is the main structure of the lawnmower, which internally houses a drive motor, a controller 10, and a power module. The output shaft 2 is vertically arranged at the bottom of the body 1, with its upper end connected to the output end of the drive motor via a coupling. The lower end is fixed to the base 3, which is a cylindrical metal part and is coaxially fixed to the output shaft 2 by bolts. The interior is hollow to accommodate the centrifugal self-locking device 6, and several L-shaped guide grooves 7 are opened on the outer wall. These guide grooves 7 are arranged in a circular array. The blade disc assembly 4 includes a mounting base 402 and blades 401. The mounting base 402 is disc-shaped, and the blades 401 are fixed to the outside of the mounting base 402 by bolts. In this application, there are three blades 401. Several guide strips 8 that are adapted to the guide grooves 7 are fixed on the inner side of the top. These guide strips 8 are also arranged in a circular array.

[0046] like Figure 1 , Figure 3 and Figure 5As shown, the manual unlocking mechanism 5 is integrated on the mounting base 402 to enable quick assembly and disassembly of the cutter head assembly 4 and the base 3. The mechanism includes several insert blocks 501, several guide blocks 502, several traction ropes 503, and a control ring 504. The insert blocks 501 are movably disposed in the radial groove of the mounting base 402, and the end is provided with a bevel to guide them into the guide groove 7 of the base 3. The guide blocks 502 are slidably disposed in the axial groove of the mounting base 402, and the top is fixedly connected to the control ring 504. The traction ropes 503 are movably disposed in the rope channel inside the mounting base 402, one end is fixedly connected to the insert blocks 501, and the other end is fixedly connected to the guide blocks 502. The control ring 504 is sleeved on the outside of the mounting base 402 and can slide along the axial direction. A magnet is provided on its inner wall. When the control ring 504 is lifted, the traction rope 503 is pulled, thereby driving the insert 501 to retract into the mounting base 402 and releasing the lock with the base 3. After the control ring 504 is released, the reset spring 505 pushes the insert 501 to automatically reset and relock.

[0047] like Figure 1 , Figure 3 and Figure 4 As shown, the centrifugal self-locking device 6 is integrated inside the base 3 to further enhance the connection stability between the cutter head assembly 4 and the base 3 during high-speed rotation. This device includes several centrifugal pins 601, a reset component 602, and a locking hole 603. The centrifugal pins 601 are movably disposed in radial channels inside the base 3, preferably four in number, and are evenly distributed around the rotation axis of the base 3 to ensure dynamic balance. The reset component 602 (in this application, a folding spring) is connected to the centrifugal pins 601 and is used to hold the centrifugal pins 601 in a retracted position when the drive motor is stationary or its speed is lower than a preset speed. The locking hole 603 is located on the inner wall of the control ring 504. When the drive motor speed reaches or exceeds the preset speed, the centrifugal pins 601 overcome the force of the reset component 602 under centrifugal force, move outward along the radial channels, and embed into the locking hole 603, thereby circumferentially locking the control ring 504 and the base 3 to prevent relative rotation or axial movement during operation.

[0048] like Figure 1 , Figure 3 and Figure 6As shown, the electronic safety interlock system is used to ensure that the lawnmower can only be started after the blade assembly 4 is installed and locked, thereby ensuring operational safety. The system includes a blade status sensor 9 and a controller 10. The blade status sensor 9 is preferably a Hall sensor, fixed on the base 3 and electrically connected to the controller 10. A magnet is provided on the control ring 504. When the blade assembly 4 is in the locked state, the magnet and the Hall sensor are in a preset corresponding position. The Hall sensor detects the magnetic field signal and sends a "blade locked" signal to the controller 10. The controller 10 is electrically connected to the drive motor and the blade status sensor 9 and is configured to only allow the output of the start command to the drive motor after receiving the blade locked signal from the blade status sensor 9. If the sensor detects an abnormal blade status (such as magnet position displacement) during operation, the controller 10 will immediately cut off the motor power supply to achieve an emergency stop.

[0049] Working principle: When installing the cutter head, the guide bar 8 of the cutter head assembly 4 is aligned with the vertical part of the L-shaped guide groove 7 of the base 3 and inserted. During this process, the reset spring 505 pushes the insert block 501 into the bottom of the guide groove 7 to complete the initial locking. At the same time, the control ring 504 moves down under the action of gravity or spring force, so that the magnet on it is aligned with the Hall sensor on the machine body 1.

[0050] When the lawnmower is started, the Hall sensor detects a locking signal and sends it to the controller 10. The controller 10 only allows the drive motor to start after confirming that the signal is valid. When the motor speed reaches a preset value (e.g., 3000 rpm), the centrifugal self-locking device 6 is triggered. The centrifugal pin 601 flies outward under the action of centrifugal force and embeds into the locking hole 603 on the inner side of the control ring 504, locking the control ring 504 and the base 3 circumferentially, forming a double lock to ensure the connection stability of the cutter head under high-speed rotation.

[0051] When disassembling the cutter head, first stop the drive motor and wait until its speed drops to zero. Then, under the action of the reset component 602, the centrifugal pin 601 retracts into the base 3, releasing the centrifugal lock. Then, the operator lifts the control ring 504, and the traction rope 503 is pulled, which in turn drives the insert 501 to overcome the spring force and retract into the mounting base 402, disengaging from the guide groove 7 of the base 3. At this time, the guide bar 8 is moved from the horizontal part of the guide groove 7 back to the vertical part, and the entire cutter head assembly 4 can be removed from the base 3.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A quick-release self-locking intelligent mower with a cutterhead, characterized in that: include: Body (1); An output shaft (2) is located at the bottom of the body (1), and the output shaft (2) is connected to the output end of the drive motor inside the body (1). The base (3) is fixed to the output shaft (2); The cutter head assembly (4) includes a blade (401) and a mounting base (402) for mounting the blade (401), the mounting base (402) being detachably connected to the base (3); A manual unlocking mechanism (5) is provided on the mounting base (402) for fixing or disconnecting the mounting base (402) from the base (3); The centrifugal self-locking device (6) is integrated inside the base (3). When the output shaft (2) drives the base (3) to rotate and reach the preset speed, the centrifugal self-locking device (6) is triggered to further lock the mounting base (402) and the base (3) in the circumferential and / or axial directions to enhance the connection stability of the two during operation.

2. The quick-release self-locking intelligent mower with a cutterhead according to claim 1, characterized in that: The base (3) has several guide grooves (7) arranged in a circular array. The guide grooves (7) are L-shaped. Several guide strips (8) are fixed on the inner side of the mounting base (402). The guide grooves (7) and guide strips (8) are arranged in a circular array. The vertical parts of the guide strips (8) and guide grooves (7) are matched to guide the mounting base (402) to be movably fitted onto the base (3).

3. The quick-release self-locking intelligent mower with a cutterhead according to claim 2, characterized in that: The manual unlocking mechanism (5) includes: At least one insert (501) is movably disposed on the mounting base (402); At least one guide block (502) is movably disposed on the mounting base (402); At least one traction rope (503) is movably disposed within the mounting base (402), one end of which is fixedly connected to the insert block (501) and the other end of which is fixedly connected to the guide block (502). The traction rope (503) enables the insert block (501) and the guide block (502) to move synchronously. A control ring (504) is movably mounted on the mounting base (402). The end of the guide block (502) away from the traction rope (503) is fixedly connected to the control ring (504). The guide block (502) restricts the control ring (504) from moving axially along the mounting base (402). The traction rope (503) is also provided with a reset member. When the guide bar (8) is fully inserted into the guide groove (7), the reset member drives the guide block (502) to insert into the bottom of the guide groove (7).

4. The quick-release self-locking intelligent mower with a cutterhead according to claim 3, characterized in that: The end of the insert (501) away from the guide block (502) is constructed with a bevel so that the insert (501) can be inserted into the guide groove (7). The reset component includes a reset spring (505) sleeved on the traction rope (503) and fixed at both ends to the insert (501) and the mounting base (402) respectively.

5. The quick-release self-locking intelligent mower with a cutterhead according to claim 4, characterized in that: The centrifugal self-locking device (6) includes: At least one centrifugal pin (601) is movably disposed in a radial channel inside the base (3); The reset component (602) is connected to the centrifugal pin (601) and is used to keep the centrifugal pin (601) in the retracted position when the drive motor is stationary or the speed is lower than the preset speed. A locking hole (603) is provided on the inner sidewall of the control ring (504).

6. The quick-release self-locking intelligent mower with a cutterhead according to claim 5, characterized in that: When the speed of the drive motor reaches or exceeds the preset speed, the centrifugal pin (601) overcomes the force of the reset component (602) under the action of centrifugal force, moves outward along the radial channel and is embedded in the locking hole (603), thereby locking the control ring (504) and the base (3) circumferentially.

7. The quick-release self-locking intelligent mower with a cutterhead according to claim 5, characterized in that: The number of centrifugal pins (601) is four, and they are evenly distributed around the rotation axis of the base (3) to ensure dynamic balance.

8. The quick-release self-locking intelligent mower with a cutterhead according to claim 3, characterized in that: It also includes an electronic safety interlocking system, which comprises: The cutter head status sensor (9) is used to detect whether the cutter head assembly (4) has been correctly installed and locked; The controller (10) is electrically connected to the drive motor and the cutter head status sensor (9).

9. The quick-release self-locking intelligent mower with a cutterhead according to claim 8, characterized in that: The controller (10) is configured to only allow the output of a start command to the drive motor after receiving a locked signal from the cutter head status sensor (9).

10. The quick-release self-locking intelligent mower with a cutterhead according to claim 8, characterized in that: The cutter head status sensor (9) is a Hall sensor, and a magnet is provided on the control ring (504). When the cutter head assembly (4) is in a locked state, the magnet and the Hall sensor are in a preset corresponding position.

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