CN220965651U - Mower - Google Patents

Abstract

A mower comprising a main body and a wheel assembly for driving the main body to travel, wherein the wheel assembly comprises a front wheel assembly and a rear wheel assembly, and the front wheel assembly and the rear wheel assembly are arranged on the main body at intervals; the mower further comprises a steering assembly with a steering driver, the front wheel assembly comprises driving front wheels arranged on two sides of the main body, the rear wheel assembly comprises driving rear wheels arranged on two sides of the main body, at least part of structures of the main body exceed the outer contour of the driving front wheels in the advancing direction of the mower, and the steering driver is connected between the driving front wheels and the main body and used for controlling steering of the front wheel assembly.

Description

Mower

Technical Field

The utility model relates to the technical field of mowers, in particular to a mowing machine.

Background

Along with the continuous improvement of the living standard of people, people have higher requirements on leisure environment, and private gardens, parks, playgrounds and other places become the best places for people to enjoy leisure and entertainment. At present, a mowing robot is generally adopted to replace manual trimming, and the grass lands of private gardens, parks, playgrounds and the like are trimmed irregularly so as to ensure attractive appearance.

However, the front wheel assembly of the existing mower is usually exposed to the vehicle body, and is easy to collide with obstacles in the traveling process, so that the front wheel assembly or other power mechanism is damaged, thereby reducing the service life of the mower.

Disclosure of utility model

The utility model provides a mower, which can prevent the mower from being bumped with obstacles in the running process by a part of the structure that a main body exceeds a driving front wheel, and prolongs the service life of the mower.

The utility model also provides a mower which is characterized by comprising a main body and a wheel assembly used for driving the main body to move, wherein the wheel assembly comprises a front wheel assembly and a rear wheel assembly, and the front wheel assembly and the rear wheel assembly are arranged on the main body at intervals;

The mower further comprises a steering assembly with a steering driver, the front wheel assembly comprises driving front wheels arranged on two sides of the main body, the rear wheel assembly comprises driving rear wheels arranged on two sides of the main body, at least part of structures of the main body exceed the outer contour of the driving front wheels in the advancing direction of the mower, and the steering driver is connected between the driving front wheels and the main body and used for controlling steering of the front wheel assembly.

In the mower according to the embodiment of the utility model, the main body comprises a main body part and an anti-collision part, the anti-collision part is provided with a first anti-collision part, one end of the first anti-collision part is connected with the main body part, and the other end of the first anti-collision part extends along the advancing direction of the mower and exceeds the outer contour of the driving front wheel.

In the mower according to an embodiment of the present utility model, the collision preventing portion has a second collision preventing portion connected to the first collision preventing portion and extending along both sides perpendicular to the advancing direction of the mower for surrounding at least a part of the outer contour of the driving front wheel.

In the mower according to the embodiment of the utility model, both ends of the second anti-collision part exceed the outer contour of the driving front wheel.

In the mower according to the embodiment of the utility model, the first anti-collision portion has a first connecting end and a second connecting end, the width of the first anti-collision portion gradually widens from the first connecting end to the second connecting end, the first connecting end is connected to the main body portion, and the second anti-collision portion is connected to the second connecting end.

In the mower of an embodiment of the utility model, the main body part comprises a vehicle body and a chassis, the vehicle body is connected with the chassis, the chassis is provided with a first supporting frame and a second supporting frame at intervals along the advancing direction of the mower, the driving front wheel is connected to two sides of the first supporting frame through the steering assembly, the driving rear wheel is connected to two sides of the second supporting frame, and the anti-collision part is connected to the front end of the chassis.

In the mower of an embodiment of the utility model, the first support frame is rotatably installed above the chassis, the second support frame is fixed below the chassis, and the anti-collision part is detachably connected with or integrally formed with the chassis.

In the mower according to the embodiment of the utility model, the first supporting frame is provided with a first installation part, the chassis is provided with a second installation part, and the first installation part is rotatably installed on the second installation part.

In the mower of an embodiment of the present utility model, the height of the bottom of the anti-collision portion with respect to the bottom of the main body portion is not higher than the height of the front wheel assembly with respect to the ground about the rotational axis of the main body portion.

In a mower according to an embodiment of the utility model, the anti-collision part has a triggerable position, and the minimum distance between the triggerable position and the ground is between 50mm and 80 mm.

In the mower according to an embodiment of the present utility model, the main body further includes at least one sensor mounted on the main body portion above the collision preventing portion for detecting an obstacle on a circumferential side of the main body portion.

In the mower of an embodiment of the present utility model, the sensor includes at least one of an infrared sensor, an ultrasonic sensor, and a visual sensor.

In the mower according to the embodiment of the utility model, the steering assembly comprises a steering bracket connected with the front wheel assembly, and the steering driver is arranged between the steering bracket and the main body and used for controlling the steering bracket to rotate relative to the main body.

In the mower according to an embodiment of the present utility model, the steering driver includes a steering motor, two opposite ends of the steering motor are connected to support plates, the support plates are connected to the first support frame of the main body, and the steering support frame is connected to a steering output shaft of the steering motor penetrating through one of the support plates.

In the mower according to an embodiment of the present utility model, the mower further includes a cutter for cutting mowing, the cutter includes a first cutter and a second cutter, the first cutter and the second cutter are disposed on the chassis of the main body, and an angle formed by a connecting line of a center of the first cutter and a center of the second cutter and a forward direction of the main body is a preset angle.

The technical scheme provided by the embodiment of the application can have the following beneficial effects: the application designs a mower which comprises a main body, a cutter head for cutting mowing and a wheel assembly for driving the main body to move, wherein the cutter head is arranged on the main body, the wheel assembly is arranged on two sides of the main body, at least part of the structure of the main body exceeds the outline of the wheel assembly, the mower can play a role in preventing collision, and the wheel assembly and a steering assembly are prevented from being damaged due to collision of the wheel assembly and an obstacle.

Specifically, the wheel subassembly includes front wheel subassembly and rear wheel subassembly, the front wheel subassembly is including setting up the drive front wheel in main part both sides, the rear wheel subassembly is including setting up the drive rear wheel in main part both sides, mutually independent and be connected with the inside control assembly electricity of main part between two drive front wheels and two drive rear wheels for control assembly can carry out independent real-time control to the drive power of drive front wheel and rear wheel front wheel according to the complicated road conditions in the actual conditions, be favorable to promoting environmental suitability, drive structure is simple and firm, do not need to adopt mechanical transmission mechanism transmission power and moment of torsion, like gearbox, transfer case etc..

In addition, since at least part of the structure of the main body exceeds the outer contour of the front wheel tire, the part of the structure can provide anti-collision protection for the front wheel tire in the length direction and/or width direction of the main body, so that the front wheel is prevented from being damaged due to collision between the front wheel and an obstacle during the running of the mower, and even the steering assembly instantaneously twists and changes direction under the impact force generated by the collision, so that the steering assembly is damaged.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application as claimed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a mower according to an embodiment of the present application;

FIG. 2 is a schematic view of the mower of FIG. 1 at one of its angles;

FIG. 3 is a schematic view of the mower of FIG. 1 at another angle;

FIG. 4 is a schematic view of the mower of FIG. 1 at yet another angle;

FIG. 5 is a partial block diagram of the mower of FIG. 1 at one of its angles;

FIG. 6 is a partial block diagram of the mower of FIG. 4 at another angle;

FIG. 7 is a partially exploded view of the mower of FIG. 4;

Fig. 8 is a structural view of the front wheel assembly and steering assembly of fig. 1 after being connected to a first support bracket.

Reference numerals illustrate:

10. A main body; 11. a main body portion; 11a, chassis; 111a, a second mounting portion; 112a, an anti-collision connection; 111. a first support frame; 1111. a first mounting portion; 112. a second support frame; 12. an anti-collision part; 121. a first collision preventing part; 122. a second collision preventing part;

20. A wheel assembly; 21. a front wheel assembly; 21a, a motor output shaft; 211. a first front wheel; 212. a second front wheel; 22. a rear wheel assembly; 221. a first rear wheel; 222. a second rear wheel;

30. A cutterhead; 31. a first cutterhead; 32. the second cutterhead;

40. a steering assembly; 40a, steering drive; 40b, steering brackets; 40c, a support plate;

50. A sensor;

60. And a control assembly.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is also to be understood that the terminology used in the description of the present utility model is for the purpose of describing the particular embodiments only, and it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. refer to the orientation or positional relationship as indicated on the basis of the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 to 2, the present application provides a mower, which comprises a main body 10 and a wheel assembly 20, wherein the wheel assembly 20 comprises a front wheel assembly 21 and a rear wheel assembly 22, and the front wheel assembly 21 and the rear wheel assembly 22 are arranged at intervals and symmetrically on two sides of the main body 10 for driving the main body 10 to travel. The forward direction of the mower is a straight direction when the mower is advanced, and if the forward and backward direction of the mower is the longitudinal direction of the main body 10, the left and right direction of the mower is the width direction of the main body 10. Therefore, the front wheel assemblies 21 are disposed at the left and right sides near the front end of the main body 10, and the rear wheel assemblies 22 are disposed at the left and right sides near the rear end of the main body 10, and the connection line between the front end and the rear end of the main body 10 is the length direction of the mower.

It should be noted that, the size of the main body 10 in the front-rear direction may be smaller than the size of the mower in the left-right direction, or the main body 10 may be irregularly shaped, and the size of the main body 10 in the front-rear direction may be equal to the size of the mower in the left-right direction, which is not limited by the present application.

In an alternative embodiment, as shown in fig. 2, 3 and 5, the mower further comprises a steering assembly 40 with a steering driver 40a, the front wheel assembly 21 comprises driving front wheels arranged at two sides of the main body 10, the rear wheel assembly 22 comprises driving rear wheels arranged at two sides of the main body 10, and at least part of the structure of the main body 10 exceeds the outer contour of the driving front wheels in the advancing direction of the mower, so that the mower can play a role of anti-collision, and the driving front wheels are prevented from colliding with obstacles to cause damage to the driving front wheels; the steering driver 40a is connected between the driving front wheel and the main body 10 for controlling steering of the front wheel assembly, and since at least a portion of the main body 10 is constructed to exceed the outer contour of the driving front wheel in the advancing direction of the mower, the portion of the construction can also prevent the steering assembly 40 from colliding with an obstacle or from causing damage to the steering driver 40a after the driving front wheel collides with an obstacle.

As illustrated in fig. 2, 3 and 5, the main body 10 is provided with first and second support frames 111 and 112 at intervals in a length direction, the driving front wheels include first and second front wheels 211 and 212, the steering assembly 40 includes first and second steering assemblies 41 and 42, the first front wheel 211 is mounted at one side of the first support frame 111 through the first steering assembly 41, and the second front wheel 212 is mounted at the other side of the first support frame 111 through the second steering assembly 42, so that the first and second steering assemblies 40 and 40 can steer the first and second front wheels 211 and 212, respectively. At least part of the structure of the main body 10 exceeds the outer contours of the first front wheel 211 and the second front wheel 212 in the advancing direction of the mower, so that the first front wheel 211, the second front wheel 212, the first steering assembly 41 and the second steering assembly 42 can be prevented from being damaged due to collision between the first front wheel 211 and the second front wheel 212 and the obstacle.

In an alternative embodiment, as shown in fig. 2 and 7, the driving rear wheel includes a first rear wheel 221 and a second rear wheel 222, the first rear wheel 221 and the second rear wheel 222 are symmetrically installed at both sides of the second support frame 112 and are electrically connected with the control assembly, and power and torque transmission is not required by means of other mechanical transmission assemblies, so that the driving structure is simple and stable, and parts are fewer and not easy to damage; meanwhile, the first front wheel 211, the second front wheel 212, the first rear wheel 221 and the second rear wheel 222 can be directly driven by the control assembly to independently rotate or cooperate with each other to drive the mower to run, so that the mower can run in a complex environment and mow the mower.

In an alternative embodiment, the front wheel assembly 21 further includes a front wheel tire, the rear wheel assembly 22 further includes a rear wheel tire, the front wheel tire is sleeved on the rotating circumferential surfaces of the first front wheel 211 and the second front wheel 212, and the rear wheel tire is sleeved on the rotating circumferential surfaces of the first rear wheel 221 and the second rear wheel 222. The first front wheel 211, the second front wheel 212, the first rear wheel 221 and the second rear wheel 222 are all in-wheel motors, and the in-wheel motors have the characteristic of independent driving of single wheels, and can be easily realized in the form of front drive, rear drive or four-wheel drive.

Specifically, the in-wheel motor has a rotor portion and a stator portion, the stator portion is connected with the first support frame 111 and the second support frame 112 to keep the stator portion relatively fixed to the main body 10, the rotor portion is connected with the front wheel tire and the rear wheel tire to keep the rotor portion fixed to the front wheel tire and the rear wheel tire, and the stator portion and the rotor portion relatively rotate when energized to drive the front wheel tire and the rear wheel tire to rotate relative to the main body 10 to realize the running of the main body 10. At least part of the structure of the main body 10 exceeds the outer contour of the front wheel tyre in the advancing direction of the mower, so that the front wheel tyre can play a role in collision prevention, and the front wheel assembly 21 and the steering assembly 40 are prevented from being damaged due to collision of the front wheel tyre and an obstacle.

After the technical scheme is adopted, as the first front wheel 211, the second front wheel 212, the first rear wheel 221 and the second rear wheel 222 are mutually independent and are electrically connected with the control component, the first front wheel 211, the second front wheel 212, the first rear wheel 221 and the second rear wheel 222 can be independently driven or mutually cooperated under the action of the control component, and can be specifically controlled according to the weeding environment of the mower, so that the environmental adaptability of the mower is improved. In addition, the control assembly may be used to control the power transmission conditions of the first front wheel 211, the second front wheel 212, the first rear wheel 221 and the second rear wheel 222, and further control the driving forces of the first front wheel 211, the second front wheel 212, the first rear wheel 221 and the second rear wheel 222, thereby facilitating the saving of power.

In an alternative embodiment, at least part of the structure of the body 10 exceeds the outer contour of the front tyre in the advancing direction of the mower, on the one hand, the part of the structure extending outside the front tyre through the body 10 during the advancing of the mower can collide with an obstacle, so that the front tyre is prevented from colliding with the obstacle in front of the mower; on the other hand can be used for enclosing at least partial outline of front wheel tire, avoid the lawn mower to advance or rotate the in-process, main part 10 can enclose the partial structure of keeping off at front wheel tire outline and the barrier collision of lawn mower both sides, not only improve the security of lawn mower, also avoided driving front wheel and front wheel tire impaired, even can also avoid steering assembly 40 to receive instantaneous torsion impact, lead to steering assembly 40 to break down and reduce problems such as life-span.

After the technical scheme is adopted, the front wheels and the front wheel tires can be prevented from being damaged, and the steering assembly 40 can be prevented from being impacted by larger instantaneous external force, so that larger torque is generated, even certain deflection occurs, the steering driver 40a is impacted by instantaneous torsion, collision, abrasion and damage are easy to occur, and the steering driver is easy to break down and has a reduced service life.

In an alternative embodiment, as shown in fig. 3 to 5, the body 10 includes a body portion 11 and an impact portion 12, and the impact portion 12 is connected to or integrally formed with the body portion 11. The anti-collision portion 12 has a first anti-collision portion 121, one end of the first anti-collision portion 121 is connected to the main body portion 11, and the other end of the first anti-collision portion 121 extends along the advancing direction of the mower and exceeds the outer contour of the front tire in the advancing direction of the mower, that is, the length direction of the main body portion 11 in the present application is mainly used for preventing the front tire from colliding with an obstacle in front of the mower through the first anti-collision portion 121 during the advancing process of the mower.

Illustratively, when the mower is moved to weed, the front wheel assembly 21 is inevitably caught on obstacles such as stones scattered on the lawn, so that the driving front wheel and the steering driver 40a are easily subjected to instantaneous impact due to collision, thereby damaging the driving front wheel and the steering driver 40a or reducing the service life of the driving front wheel and the steering driver 40 a.

In an alternative embodiment, the anti-collision portion 12 has a second anti-collision portion 122, where the second anti-collision portion 122 is connected to the first anti-collision portion 121 and extends along two sides perpendicular to the advancing direction of the mower, that is, in the width direction of the main body 11 in the present application, the second anti-collision portion is used to enclose at least part of the outer contour of the front wheel tire, so as to avoid collision between the front wheel assembly 21 and obstacles on two sides of the mower during the advancing or rotating process of the mower, not only improve the safety of the mower, but also avoid damage to the front wheel and the front wheel tire, and even avoid the steering assembly 40 from being subjected to transient torsion impact, resulting in failure of the steering assembly 40 and reduced service life.

The two ends of the second anti-collision portion 122 extend beyond the outer contour of the front tire, that is, the length of the second anti-collision portion 122 is greater than the maximum length of the central connecting line of the two front tires, and meanwhile, the end portion of the second anti-collision portion 122 protrudes from the outer contour of the front tire, so that the mower can collide with the obstacles on two sides of the mower through the second anti-collision portion 122 in the moving process, and even the mower can collide with the obstacles on two sides of the mower before the front wheel assembly 21 in the rotating process, the front wheel assembly 21 is prevented from colliding with the obstacles, and the service lives of the front wheel assembly 21 and the steering assembly 40 are prolonged.

It should be noted that, the second anti-collision portion 122 may be an arc structure, the second anti-collision portion 122 may also be an arc structure, and even the second anti-collision portion 122 may also be formed by splicing multiple anti-collision beams, which is not limited by the present application.

In an alternative embodiment, as shown in fig. 3 to 5, the first impact preventing part 121 has a first connection end and a second connection end, the width of the first impact preventing part 121 gradually widens from the first connection end toward the second connection end, the first connection end is connected to the body part 11, and the second impact preventing part 122 is connected to the second connection end. After the technical scheme is adopted, the strength of the joint of the first anti-collision part 121 and the main body part 11 is enhanced, so that the overall strength of the first anti-collision part 121 can be improved, and the phenomenon that the first anti-collision part 121 collides with an obstacle and then deforms or breaks is avoided.

In an alternative embodiment, as shown in fig. 3 and 4, the main body 11 includes a body and a chassis 11a, the body is connected to the chassis 11a, and the first support frame and the second support frame are disposed at intervals along the chassis 11a in the advancing direction of the mower, that is, in the length direction of the chassis 11a in the present application. The front wheel assembly 21 and the rear wheel assembly 22 are respectively connected with the chassis 11a through the first support frame 111 and the second support frame 112, and the anti-collision portion 12 is connected at the front end of the chassis 11a or integrally formed with the chassis 11a, so as to ensure the connection strength of the anti-collision portion 12, thereby playing a better role in anti-collision.

Illustratively, the front end of the chassis 11a is provided with an anti-collision connection portion 112a, and a first connection end of the first anti-collision portion 121 is connected to the anti-collision connection portion 112a, and a second connection end of the first anti-collision portion 121 is connected to the second anti-collision portion 122. The first anti-collision portion 121 is disposed along the length direction of the main body 10, the second anti-collision portion 122 is disposed along the width direction of the main body 10, and the second connection end is connected to the middle of the second anti-collision portion 122.

In an alternative embodiment, the first support frame 111 is rotatably installed above the chassis 11a, the second support frame 112 is fixed below the chassis 11a, and the anti-collision portion 12 is detachably connected to or integrally formed with the chassis 11a, so that the first support frame 111 can adjust the height position of the front wheel assembly 21 according to road conditions, so as to adapt to different weeding environments, and also can enable the front wheel assembly 21 to walk on uneven road surfaces.

After the technical scheme is adopted, the heights of the first front wheel 211 and the second front wheel 212 can be adjusted according to the walking road surface of the mower due to the first support frame 111 and the chassis 11a so as to adapt to the road surfaces of different environments. Meanwhile, the first support frame 111 is utilized to adjust the positions of the first front wheel 211 and the second front wheel 212 in the left-right direction, so that the structure of the mower can be simplified, the first support frame 111 and the chassis 11a can be integrated, mass production is easy, and the rigidity of the whole mower can be ensured.

In an alternative embodiment, as shown in fig. 5 and 7, a first mounting portion 1111 is provided on the first support frame 111, a second mounting portion 111a is provided on the chassis 11a, and the first mounting portion 1111 is rotatably mounted on the second mounting portion 111a, so that the first support frame 111 can swing left and right relative to the chassis 11a, thereby driving the first front wheel 211 and the second front wheel 212 connected to both ends of the first support frame 111 to move up and down, so as to achieve the effect of adjusting the heights of the first front wheel 211 and the second front wheel 212.

In an alternative embodiment, as shown in fig. 4 and 5, the height h2 of the bottom of the anti-collision portion 12 relative to the ground is not higher than the height h1 of the front wheel assembly 21 relative to the ground about the rotation axis of the main body portion 11, and the height h2 of the bottom of the anti-collision portion 12 relative to the ground is greater than a preset value, and the preset value is a value greater than zero, so that the ground clearance of the anti-collision portion 12 can be reduced, the collision of stone-like obstacles on the lawn from entering the rear front wheel assembly 21 through the gap between the anti-collision portion 12 and the ground can be effectively avoided, the collision area of the front wheel assembly 21 and the obstacles can be reduced, the possibility of collision of the front wheel assembly 21 with the obstacles is reduced, and the service lives of the front wheel assembly 21 and the steering assembly 40 are indirectly prolonged.

In an alternative embodiment, the height h3 of the top of the impact portion 12 relative to the ground is greater than the height h1 of the front wheel assembly 21 relative to the ground about the rotational axis of the main body portion 11, such that the rotational axis of the front wheel assembly 21 about the main body portion 11 can be between the bottom of the impact portion 12 and the top of the impact portion 12.

In an alternative embodiment, the impact portion 12 has a triggerable position 12a, the height of the triggerable position 12a from the ground being between 50mm and 80mm to further reduce the likelihood of the front wheel assembly 21 colliding with an obstacle.

In an alternative embodiment, as shown in fig. 2 and 3, the main body 10 further includes at least one sensor 50, and the sensor 50 is mounted on the main body 11 above the anti-collision portion 12, for detecting an obstacle in front of the main body 11, so that the mower can be braked to avoid collision with the obstacle.

Illustratively, the sensor 50 includes at least one of an infrared sensor, an ultrasonic sensor, and a visual sensor.

In an alternative embodiment, the sensor 50 comprises an ultrasonic sensor, after detecting the obstacle information in front of the mower by the ultrasonic sensor, the detected information is transmitted to the control component, the control component can send a control command to enable a speaker on the mower to send out a reminding sound, and when the distance between the mower and the obstacle is smaller than the safe distance, the control component can also control a brake device of the mower to brake the wheel assembly 20 so as to avoid collision with the obstacle.

Illustratively, the sensor 50 further includes a visual sensor mounted on the main body 11 above the anti-collision portion 12, and capable of obtaining a panoramic image of the surrounding environment of the mower during driving to confirm whether an obstacle exists in front of or on the periphery of the mower, so that the mower is controlled to stop driving by the control assembly, and collision with the obstacle is avoided. In addition, the vision sensor can be combined with the ultrasonic sensor for use, so that the accuracy of detection of the vision sensor on detection of the surrounding environment can be utilized, and the specific situation that the front can not be detected only by the ultrasonic sensor is avoided, for example, the ultrasonic sensor misjudges a slope in front as an obstacle. Meanwhile, the convenience and accuracy of the ultrasonic sensor for detecting the obstacle can be utilized, and the condition that the visual sensor cannot detect partial obstacle in the running environment, such as transparent obstacle, is avoided.

By adopting the technical scheme, the sensor 50 is arranged on the main body part 11, so that the mower can be used for detecting surrounding obstacles, and the mower can be braked to avoid collision with the obstacles; at the same time, the anti-collision part 12 can be combined to further prevent the front wheel assembly 21 from colliding with the surrounding obstacles of the mower, so as to avoid the false detection phenomenon of the sensor 50, such as misjudging the front slope as an obstacle or a transparent obstacle. Thus, not only the safety of the mower is improved, but also the damage to the driving front wheels and the front wheel tires is avoided, and even the problems that the steering assembly 40 fails and the service life is reduced due to the instant torsion impact of the steering assembly 40 can be avoided.

In an alternative embodiment, as shown in fig. 6 and 7, the steering assembly 40 includes a steering bracket 40b coupled to the front wheel assembly 21, and a steering driver 40a is disposed between the steering bracket 40b and the first support bracket 111 for controlling the steering bracket 40b to rotate relative to the first support bracket 111, thereby achieving angular adjustment of the front wheel assembly 21.

Illustratively, the steering driver 40a includes a steering motor, one end of the steering bracket 40b is provided with a motor fixing portion, the motor output shaft 21a driving the front wheel is fixed on the motor fixing portion, the other end of the steering bracket 40b is connected to the steering motor, and the steering bracket 40b may be directly or indirectly mounted on the first support frame 111.

In an alternative embodiment, the opposite ends of the steering motor are connected with support plates 40c, the support plates 40c are connected with the first support frame 111, and the steering support 40b is connected with a steering output shaft of the steering motor penetrating through one of the support plates 40 c. In the present embodiment, the number of the support plates 40c is two, and the two support plates 40c are clamped at the upper and lower sides of the first support frame 111 to firmly fix the steering motor to the first support frame 111.

In an alternative embodiment, as shown in fig. 3 and 4, the mower further comprises a cutter 30, the cutter 30 being provided on the main body 10 for cutting grass.

In an alternative embodiment, the cutterhead 30 includes a first cutterhead 31 and a second cutterhead 32, and an angle formed by a line between the center of the first cutterhead 31 and the center of the second cutterhead 32 and the advancing direction of the main body 10 is preset, so as to improve the mowing efficiency of the mower. The included angle between the central line between the center of the first cutterhead 31 and the center of the second cutterhead 32 and the advancing direction of the main body 10 is designed to be a preset angle, so that the radius between the center of the first cutterhead 31 and the center of the second cutterhead 32 is smaller than the horizontal distance between the centers of the two, thereby increasing the overlapping area of the first cutterhead 31 and the second cutterhead 32 during cutting and further effectively avoiding the middle missed cutting phenomenon. The predetermined angle is preferably 75 to 85.

In an alternative embodiment, the first and second cutterheads 31 and 32 are provided on the chassis 11a of the main body 10 between the front wheel assembly 21 and the rear wheel assembly 22, so that the first and second cutterheads 31 and 32 can be prevented from directly colliding with external obstacles.

In an alternative embodiment, the control assembly 60 may include, but is not limited to, a controller, a scram button, a start button, a mowing button, etc. provided on the body portion 11, and the present application is not limited thereto.

In the description of the present application, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The above disclosure provides many different embodiments, or examples, for implementing different structures of the application. The foregoing description of specific example components and arrangements has been presented to simplify the present disclosure. They are, of course, merely examples and are not intended to limit the application. Furthermore, the present application may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims (15)

1. The mower is characterized by comprising a main body and a wheel assembly used for driving the main body to travel, wherein the wheel assembly comprises a front wheel assembly and a rear wheel assembly, and the front wheel assembly and the rear wheel assembly are arranged on the main body at intervals;

The mower further comprises a steering assembly with a steering driver, the front wheel assembly comprises driving front wheels arranged on two sides of the main body, the rear wheel assembly comprises driving rear wheels arranged on two sides of the main body, at least part of structures of the main body exceed the outer contour of the driving front wheels in the advancing direction of the mower, and the steering driver is connected between the driving front wheels and the main body and used for controlling steering of the front wheel assembly.

2. The mower of claim 1, wherein the main body comprises a main body portion and an anti-collision portion, the anti-collision portion having a first anti-collision portion, one end of the first anti-collision portion being connected to the main body portion, the other end of the first anti-collision portion extending in a forward direction of the mower and beyond an outer contour of the front drive wheel.

3. The mower of claim 2, wherein the anti-collision portion has a second anti-collision portion connected to the first anti-collision portion and extending along both sides perpendicular to the advancing direction of the mower for enclosing at least part of the outer contour of the driving front wheel.

4. A lawnmower as claimed in claim 3 wherein both ends of the second anti-collision portion extend beyond the outer contour of the drive front wheel.

5. A mower as claimed in claim 3, wherein said first impact portion has a first connecting end and a second connecting end, said first impact portion having a width that gradually widens from said first connecting end toward said second connecting end, said first connecting end being connected to said main body portion, said second impact portion being connected to said second connecting end.

6. The mower of claim 2, wherein the main body comprises a body and a chassis, the body is connected with the chassis, the chassis is provided with a first supporting frame and a second supporting frame at intervals along the advancing direction of the mower, the driving front wheel is connected to two sides of the first supporting frame through the steering assembly, the driving rear wheel is connected to two sides of the second supporting frame, and the anti-collision part is connected to the front end of the chassis.

7. The mower of claim 6, wherein the first support is rotatably mounted above the chassis, the second support is fixed below the chassis, and the anti-collision portion is detachably connected to or integrally formed with the chassis.

8. The mower of claim 6, wherein the first support frame is provided with a first mounting portion, the chassis is provided with a second mounting portion, and the first mounting portion is rotatably mounted on the second mounting portion.

9. The mower of claim 2, wherein a height of the bottom of the bump guard is no higher than a height of the front wheel assembly relative to the ground about the rotational axis of the main body portion, and the height of the bottom of the bump guard relative to the ground is greater than a preset value.

10. A mower as claimed in claim 2, wherein said bumper has a triggerable position which is between 50mm and 80mm from the ground.

11. The mower of claim 2, wherein the main body further comprises at least one sensor mounted on the main body portion above the collision preventing portion for detecting an obstacle on a circumferential side of the main body portion.

12. The mower of claim 11 wherein the sensor comprises at least one of an infrared sensor, an ultrasonic sensor, and a visual sensor.

13. The mower of claim 1 wherein the steering assembly includes a steering bracket coupled to the front wheel assembly, the steering actuator being disposed between the steering bracket and the main body for controlling rotation of the steering bracket relative to the main body.

14. The mower of claim 13 wherein the steering drive comprises a steering motor, the steering motor having support plates attached at opposite ends thereof, the support plates being connected to the first support frame of the main body, the steering support being connected to a steering output shaft of the steering motor through one of the support plates.

15. The mower of claim 1 further comprising a cutter for cutting grass, the cutter comprising a first cutter and a second cutter, the first cutter and the second cutter being disposed on the chassis of the main body, and a center line of the first cutter and a center line of the second cutter forming an angle of a predetermined angle with a forward direction of the main body.