Lawn mower with tool bit protection structure and use method

Abstract

The invention discloses a mower with a tool bit protection structure and a use method, and relates to the technical field of mowers. The mower with the tool bit protection structure comprises a mower body, the mower body comprises a chassis, the front face of the chassis is fixedly connected with a front mounting frame, the left side and the right side of the chassis are each rotationally connected with a power mechanism, the left side and the right side of the chassis are each fixedly connected with a protection plate set, and the bottom of the front mounting frame is rotationally connected with an obstacle removing protection mechanism. The top of the chassis is fixedly connected with an air pump assembly, rotationally connected with a mowing knife mechanism, fixedly connected with a control mechanism and fixedly connected with a handrail mechanism. According to the mower with the cutter head protection structure and the use method, the obstacle removing protection mechanism, the sliding cutter and the hammer carrier brush plate are arranged, so that the cutter head mechanism of the mower is protected, and the working efficiency and the working reliability of the mower are improved.

Description

Technical Field

[0001] The invention relates to the technical field of lawn mowers, and in particular to a lawn mower with a cutter head protection structure and a use method thereof. Background Art

[0002] A lawn mower is a mechanical tool used to trim and clean vegetation. Its main function is to cut grass or other low plants to the required height through a specific cutting device to maintain the flatness, beauty and healthy growth of vegetation, or to clean weeds in wasteland, roadsides and other areas;

[0003] The patent application with publication number CN108464110A discloses a multifunctional lawn mower and a method of using the same, comprising a base, a first support frame, a first roller, a second roller, a second support frame, a cutting device, a connecting rod, a supporting plate, a mudguard, a fuel tank, a fuel tank cover, an armrest height adjustment screw, a first armrest, an ignition off switch, a connecting plate, a second armrest, a throttle switch, a first brake caliper, a second brake caliper, a data bus, an acceleration sensor, an ESP control unit, an electric vacuum pump, a brake pedal sensor, a first connecting column, a card slot, a fixing plate, a first supporting column, a first rotating shaft, a first universal wheel, a second rotating shaft, a steel rope, a third rotating shaft, a fourth rotating shaft, a fifth rotating shaft, a blade, a second supporting column, a second universal wheel, and a second connecting column;

[0004] When tidying up the vegetation on the lawn, there will always be large pieces of stones and soil on the ground. The multifunctional lawn mower provided by the patent is not equipped with a protective mechanism for the mowing head, which can easily damage the mowing head structure of the lawn mower, thereby affecting the weeding efficiency and effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a lawn mower with a cutter head protection structure and a method of use to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a lawn mower with a cutter head protection structure, comprising a machine body, the machine body comprising a chassis, a front mounting frame fixedly connected to the front of the chassis, a power mechanism rotatably connected to the left and right sides of the chassis, a guard plate group fixedly connected to the left and right sides of the chassis, an obstacle removal protection mechanism rotatably connected to the bottom of the front mounting frame, an air pump assembly fixedly connected to the top of the chassis, a lawn mower mechanism rotatably connected to the top of the chassis, a control mechanism fixedly connected to the top of the chassis, an armrest mechanism fixedly connected to the top of the chassis, and a debris collection box fixedly connected to the back of the chassis;

[0007] The mowing blade mechanism comprises:

[0008] A drive motor, which is fixedly connected to the top of the chassis and electrically connected to the control mechanism via a wire, and is used to provide power for the entire mower mechanism;

[0009] A shaft sleeve, the shaft sleeve is fixedly connected to the bottom of the chassis, the interior of the shaft sleeve is rotatably connected to the motor shaft of the drive motor, and is used to stabilize and protect the motor shaft;

[0010] A cutter head sheath, the top of which is fixedly connected to the motor shaft of the driving motor, and the cutter head sheath is located at the bottom of the shaft sleeve, and is used to realize the rotation of the cutting mechanism and protect the cutter at the same time;

[0011] A sliding cutter is slidably connected to the inside of a cutter head sheath to achieve the function of cutting vegetation.

[0012] Preferably, the body material is stainless steel, the bottom of the front mounting frame is fixedly connected to a crossbeam, the obstacle clearance protection mechanism is located on the front of the front mounting frame, the air pump assembly is located on the back of the obstacle clearance protection mechanism, the lawn mower mechanism is located on the back of the air pump assembly, the control mechanism is located on the back of the lawn mower mechanism, the armrest mechanism is located on the back of the control mechanism, the debris collection box is located at the bottom of the armrest mechanism, the control mechanism includes a battery box, the battery box is located on the top of the chassis, the top of the battery box is fixedly connected to a controller, and the controller is electrically connected to the battery box.

[0013] Preferably, the power mechanism includes auxiliary wheels, there are two auxiliary wheels in total, and they are rotatably connected to the left and right sides of the front mounting frame. The left and right sides inside the chassis are fixedly connected with power motors, and the power motor is a DC motor. The power motor is electrically connected to the controller of the control mechanism through a wire, and the power motor is fixedly connected to a power wheel through a motor shaft. The power wheel is located on the outer surface of the chassis. There are two power wheels and they are symmetrically distributed on the left and right sides of the chassis, so as to drive the entire lawn mower to move.

[0014] Preferably, the guard plate group includes a front guard plate, which is fixedly connected to the left side of the chassis, and the number of the front guard plates is two and symmetrically distributed on the left and right sides of the chassis; the left side of the chassis is fixedly connected to the rear guard plate, and the number of the rear guard plates is two and symmetrically distributed on the left and right sides of the chassis; the front guard plate is located between the auxiliary wheel and the power wheel, and the rear guard plate is located on the back of the power wheel.

[0015] Preferably, the obstacle clearance protection mechanism includes a jet shovel, which includes a shovel body, the top of the shovel body is rotatably connected to the bottom of the front mounting frame, the back of the shovel body is fixedly connected to the cross beam at the bottom of the front mounting frame through a spring, a hollow structure is provided inside the shovel body, the cross-section of the left side of the hollow structure is triangular, a jet chamber is fixedly connected inside the shovel body, the front of the jet chamber is connected to the front of the shovel body through a rectangular through hole, the back of the jet chamber is connected to the back of the shovel body through a circular through hole, a sensor assembly is fixedly connected to the front of the cross beam of the front mounting frame, the sensor assembly includes a slide rod, the front of the slide rod is rotatably connected to a pulley, the pulley is slidably connected to the back of the shovel body, a distance sensor is fixedly connected inside the slide rod, and the distance sensor is electrically connected to the controller of the control mechanism through a wire.

[0016] Preferably, the air pump assembly includes a pump body, the bottom of the pump body is fixedly connected to the top of the chassis, the top of the pump body is connected to a high-pressure gas tank, the front of the high-pressure gas tank is connected to the back of the shovel body through a rubber tube, and the high-pressure gas tank is electrically connected to the control cabinet of the control mechanism through a wire.

[0017] Preferably, the blade head guard includes a guard base, a guard slide is fixedly connected to the front side of the guard base, a rectangular blind hole is opened on the front side of the guard slide, a buffer block is fixedly connected to the back side of the rectangular blind hole of the guard slide, a sliding cutter is slidably connected to the inside of the guard slide, a circular hole plate is fixedly connected to the inside of the guard slide, the circular hole plate is slidably connected to the sliding cutter, the sliding cutter is located on the front side of the buffer block, a pressure sensor is fixedly connected to one side of the inside of the guard slide, the pressure sensor is electrically connected to the control cabinet of the control mechanism through a wire, a bump plate is fixedly connected to the right side of the outer surface of the guard slide, the number of the guard slide, the buffer block, the pressure sensor and the bump plate are all two, and the other one is located on the back side of the guard base, and the guard slide, the buffer block, the pressure sensor and the bump plate are symmetrically distributed about the center point of the guard base.

[0018] Preferably, the sliding cutter includes a tail slider, the front side of the tail slider is fixedly connected to a middle body via a metal rod, the metal rod is slidably connected to the circular hole plate of the sheath slide, the front side of the middle body is fixedly connected to a cutting knife, the cutting knife is slidably connected to the inside of the sheath slide, the middle body is located inside the circular hole plate of the sheath slide, the front side of the tail slider is fixedly connected to the circular hole plate of the sheath slide via a spring, the spring is slidably connected to the metal rod, the left and right sides of the sheath base are fixedly connected to hammer rack brush plates, a nylon brush is provided at the bottom of the hammer rack brush plate, a metal trapezoidal block is fixedly connected to the front side of the hammer rack brush plate for hammering larger solid debris entering the interior of the lawn mower, and the hammer rack brush plates are symmetrically distributed about the center point of the sheath base.

[0019] Preferably, the armrest mechanism includes a vertical bracket, which is fixedly connected to the top of the chassis. There are two vertical brackets and they are symmetrically distributed on the top of the chassis. A transverse bracket is fixedly connected to the right side of the vertical bracket, and a control panel is fixedly connected to the front of the transverse bracket. The control panel is electrically connected to the controller of the control mechanism through a wire. The debris collection box includes a box body, the front side of the box body is fixedly connected to the back side of the chassis, and the left and right sides of the box body are rotatably connected to bottom wheels.

[0020] A method for using a lawn mower with a cutter head protection structure:

[0021] S1. The user holds the horizontal support with both hands and controls the control mechanism to start the entire lawn mower by touching the control panel with his fingers. At the same time, the control mechanism controls the lawn mower mechanism to start;

[0022] S2. The user controls the power mechanism to start through the control panel. After the power mechanism starts, the entire lawn mower moves and cuts the vegetation in the area where it is needed to be cut.

[0023] S3. During the cutting process, the obstacle removal protection mechanism will block larger solid obstacles appearing in the forward direction, and at the same time, the air pump assembly sucks in external air for compression, and ejects high-speed airflow through the obstacle removal protection mechanism, thereby clearing the solid obstacles appearing in the forward direction of the lawn mower;

[0024] S4. If some solid obstacles block the lawn mower from moving forward, the obstacle removal protection mechanism sends a signal to the controller of the control mechanism after being blocked, thereby controlling the motor of the power mechanism to reverse and then stop rotating, thereby preventing damage to the lawn mower.

[0025] The present invention provides a lawn mower with a cutter head protection structure, which has the following beneficial effects:

[0026] 1. A lawn mower with a cutter head protection structure is provided with an obstacle removal protection mechanism, and uses a jet shovel to separate larger solid debris in the direction of travel of the lawn mower from the lawn mower mechanism, thereby protecting the lawn mower cutter head mechanism, thereby improving the working efficiency of the lawn mower, and at the same time improving the lawn mower's cutting effect on vegetation. Through the cooperation of the jet shovel and the sensor component, the lawn mower can distinguish the state of solid debris, and through the cooperation of the sensor component with the control mechanism and the power mechanism, the lawn mower as a whole is protected, thereby improving the overall reliability of the lawn mower.

[0027] 2. The lawn mower with a cutter head protection structure, through the cooperation of the jet baffle and the air pump assembly, can assist in isolating larger solid debris while clearing smaller debris in the direction of travel of the lawn mower, preventing smaller solid debris from entering the mower blade mechanism and damaging the cutter head mechanism, thereby improving the reliability and working efficiency of the lawn mower.

[0028] 3. A lawn mower with a cutter head protection structure is provided with a sliding cutter, and the centrifugal force during rotation is used to swing the cutter out, so that the cutter is exposed to the outside for cutting only in the working state, thereby improving the protection of the cutter head mechanism of the lawn mower. By cooperating with the pressure sensor of the cutter head mechanism, real-time detection of the force condition of the cutter head during cutting is achieved, and the wear state of the cutter head mechanism can be monitored in real time and the rotation speed can be adjusted, thereby improving the working efficiency and reliability of the lawn mower.

[0029] 4. The lawn mower with a blade protection structure is provided with a hammer frame brush plate. While cleaning the cut vegetation debris, together with the bump plate, under the drive and cooperation of the driving mechanism, it beats and loosens the solid debris and accumulated vegetation debris appearing near the lawn mower mechanism, thereby preventing the aggregation of vegetation debris and affecting the working efficiency of the lawn mower. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the left side of the lawn mower of the present invention;

[0031] Figure 2 It is a schematic diagram of the overall structure of the bottom of the lawn mower of the present invention;

[0032] Figure 3 It is a schematic diagram of the positional relationship between the lawn mower body and the power mechanism of the present invention;

[0033] Figure 4 For the present invention Figure 2 A schematic diagram of the structure enlargement at point A;

[0034] Figure 5 A cross-sectional view showing the positional relationship between the jet shovel and the front mounting frame of the present invention;

[0035] Figure 6 It is a top cross-sectional view of the jet shovel of the present invention;

[0036] Figure 7 It is a schematic diagram of the overall structure of the mowing blade mechanism of the present invention;

[0037] Figure 8 A cross-sectional view showing the positional relationship between the cutter head sheath and the sliding cutter of the present invention;

[0038] Fig. 9 This is a schematic diagram of the overall structure of the sliding cutter of the present invention;

[0039] Fig.10 It is a schematic diagram of the overall structure of the debris collection box of the present invention.

[0040] In the figure: 1, machine body; 11, chassis; 12, front mounting frame; 2, power mechanism; 21, auxiliary wheel; 22, power wheel; 23, power motor; 3, guard plate group; 31, front guard plate; 32, rear guard plate; 4, obstacle removal protection mechanism; 41, jet shovel; 411, shovel body; 412, jet chamber; 42, sensor assembly; 5, air pump assembly; 51, pump body; 52, high-pressure gas tank; 6, mower mechanism; 61, drive motor; 62, shaft Sleeve; 63, blade sheath; 631, sheath base; 632, sheath slide; 633, buffer block; 634, pressure sensor; 635, bump plate; 64, sliding cutter; 641, tail slider; 642, middle body; 643, cutting knife; 65, hammer frame brush plate; 7, control mechanism; 8, armrest mechanism; 81, vertical bracket; 82, horizontal bracket; 83, control panel; 9, debris collection box; 91, box body; 92, bottom wheel. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0043] For example, see Figure 1-6 The present invention provides a technical solution: a lawn mower with a blade protection structure, comprising a body 1, the body 1 is made of stainless steel, the body 1 comprises a chassis 11, a front mounting frame 12 is fixedly connected to the front of the chassis 11, a crossbeam is fixedly connected to the bottom of the front mounting frame 12, the left and right sides of the chassis 11 are both rotatably connected with a power mechanism 2, the power mechanism 2 comprises auxiliary wheels 21, the number of the auxiliary wheels 21 is two, and they are rotatably connected to the left and right sides of the front mounting frame 12, the left and right sides of the inside of the chassis 11 are both fixedly connected with a power motor 23, the power motor 23 is a DC motor, the power motor 23 is electrically connected to the controller of the control mechanism 7 through a wire, the power motor 23 is fixedly connected with a power wheel 22 through a motor shaft, the power wheel 22 is located on the outer surface of the chassis 11, the number of the power wheels 22 is two and they are symmetrically distributed on the left and right sides of the chassis 11, and are used to realize the movement of the entire lawn mower;

[0044] The left and right sides of the chassis 11 are fixedly connected with a guard plate group 3, which is used to protect the lawn mower from the side and prevent the cut vegetation debris from scattering everywhere. The guard plate group 3 includes a front guard plate 31. The left side of the chassis 11 is fixedly connected with a front guard plate 31. The number of the front guard plates 31 is two and they are symmetrically distributed on the left and right sides of the chassis 11. The left side of the chassis 11 is fixedly connected with a rear guard plate 32. The number of the rear guard plates 32 is two and they are symmetrically distributed on the left and right sides of the chassis 11. The front guard plate 31 is located between the auxiliary wheel 21 and the power wheel 22, and the rear guard plate 32 is located on the back of the power wheel 22. The inner surfaces of the front guard plate 31 and the rear guard plate 32 are covered with a rubber layer.

[0045] An obstacle clearance protection mechanism 4 is rotatably connected to the bottom of the front mounting frame 12, and the obstacle clearance protection mechanism 4 is located on the front side of the front mounting frame 12. An air pump assembly 5 is fixedly connected to the top of the chassis 11, and the air pump assembly 5 is located on the back of the obstacle clearance protection mechanism 4. A lawn mower mechanism 6 is rotatably connected to the top of the chassis 11, and the lawn mower mechanism 6 is located on the back of the air pump assembly 5. A control mechanism 7 is fixedly connected to the top of the chassis 11, and the control mechanism 7 includes a battery box, and the battery box is located on the top of the chassis 11. A controller is fixedly connected to the top of the battery box, and the controller is electrically connected to the battery box. The control mechanism 7 is located on the back of the lawn mower mechanism 6. An armrest mechanism 8 is fixedly connected to the top of the chassis 11, and the armrest mechanism 8 is located on the back of the control mechanism 7. A debris collection box 9 is fixedly connected to the back of the chassis 11, and the debris collection box 9 is located at the bottom of the armrest mechanism 8.

[0046] When in use, the operator holds the armrest mechanism 8 with both hands, controls the control mechanism 7 to start through the armrest mechanism 8, and then starts the entire lawn mower through the control mechanism 7. After the lawn mower is started, the power mechanism 2, the air pump assembly 5, and the lawn mower mechanism 6 are started. At this time, the operator controls the power motor 23 to rotate through the armrest mechanism 8, and the power motor 23 drives the power wheel 22 to rotate, and then the power wheel 22 rotates to drive the entire lawn mower to move forward. At this time, the obstacle removal protection mechanism 4 blocks larger pieces of solid debris in the forward direction outside the lawn mower, and the air pump assembly 5 clears the forward direction of the lawn mower by ejecting high-speed airflow. Smaller solid debris moves upward. At this time, the vegetation in the forward direction of the lawn mower gradually returns to its original state after being bent by the obstacle removal protection mechanism 4, but then the lawn mower mechanism 6 passes through the vegetation and cuts the vegetation. The cut part temporarily rotates with the lawn mower mechanism 6 under the drive of the lawn mower mechanism 6. Since the front guard plate 31 and the rear guard plate 32 are provided on both sides to block, the cut vegetation debris will not be thrown out of the lawn mower, but will only be thrown into the debris collection box 9, or after being thrown out to the back of the lawn mower mechanism 6, it will be collected by the debris collection box 9 that follows, thereby completing the entire vegetation cutting process.

[0047] For example 2, please refer to Figure 1-9, based on the first embodiment, the present invention provides a technical solution: the obstacle protection mechanism 4 includes a jet shovel 41, the jet shovel 41 includes a shovel body 411, the top of the shovel body 411 is rotatably connected to the bottom of the front mounting frame 12, the back of the shovel body 411 is fixedly connected to the crossbeam at the bottom of the front mounting frame 12 through a spring, a hollow structure is arranged inside the shovel body 411, the cross section of the left side of the hollow structure is triangular, a jet chamber 412 is fixedly connected inside the shovel body 411, the front of the jet chamber 412 is connected to the front of the shovel body 411 through a rectangular through hole, and the back of the jet chamber 412 is connected to the back of the shovel body 411 through a circular through hole, a sensor component 42 is fixedly connected to the front of the crossbeam of the front mounting frame 12, for sensing the rotation of the shovel body 411, and then sensing the state of solid debris in front of the lawn mower, the sensor component 42 includes a slide bar, the front of the slide bar is rotatably connected to a pulley, the pulley is slidably connected to the back of the shovel body 411, a distance sensor is fixedly connected inside the slide bar, and the distance sensor is electrically connected to the controller of the control mechanism 7 through a wire;

[0048] The air pump assembly 5 includes a pump body 51, the bottom of the pump body 51 is fixedly connected to the top of the chassis 11, the top of the pump body 51 is connected to a high-pressure gas tank 52, the front of the high-pressure gas tank 52 is connected to the back of the shovel body 411 through a rubber tube, and the high-pressure gas tank 52 is electrically connected to the control cabinet of the control mechanism 7 through a wire.

[0049] During use, after the lawn mower is started and moves forward, the shovel body 411 contacts a larger solid object in front of it and blocks it at the front of the shovel body 411. At the same time, the top of the shovel body 411 rotates at a smaller angle due to the reaction force of the solid object, thereby squeezing the spring at the back of the shovel body 411. In this process, the back of the shovel body 411 also squeezes the pulley of the sensor assembly 42, thereby driving the slide bar of the sensor assembly 42 to slide backward. The distance sensor inside the slide bar of the sensor assembly 42 senses that the shovel body 411 pushes the sensor assembly 42, causing the detection distance to become smaller, and then transmits a signal back to the controller of the control mechanism 7. The controller of the control mechanism 7 receives the feedback from the sensor assembly 42. After receiving the feedback signal, the power motor 23 is controlled to increase the rotation speed, thereby overcoming the resistance exerted by the larger solid debris in front of the lawn mower, and improving the travel speed and working efficiency of the lawn mower. When the shovel body 411 squeezes the sensor component 42 to the rear limit position, the distance sensor inside the slide bar of the sensor component 42 feeds back the distance data to the controller of the control mechanism 7. The controller of the control mechanism 7 determines that the solid debris in front is fixed to the ground, and then controls the power motor 23 to stop, so as to prevent damage to the shovel body 411 and then damage to the entire lawn mower. The lawn mower then stops moving, and the operator needs to check the situation of the solid debris in front, and then clean up the solid debris or change the travel direction.

[0050] In the above process, the pump body 51 sucks in external air and compresses it into the high-pressure gas tank 52. The gas compressed into the high-pressure gas tank 52 enters the jet chamber 412 from the back of the jet chamber 412 through the rubber tube, and is diverted and sprayed out through the rectangular through hole on the front of the jet chamber 412, clearing smaller solid debris on the ground in front of the shovel body 411 and the surface of the vegetation, thereby preventing smaller solid debris from entering the bottom of the chassis 11 and affecting the vegetation cutting work of the mowing blade mechanism 6.

[0051] For example 3, please refer to Figure 1-10 Based on the first and second embodiments, the present invention provides a technical solution: the mowing blade mechanism 6 includes:

[0052] A driving motor 61, which is fixedly connected to the top of the chassis 11, and is electrically connected to the control mechanism 7 via a wire, for providing power to the entire mowing blade mechanism 6;

[0053] A shaft sleeve 62, which is fixedly connected to the bottom of the chassis 11, and the interior of the shaft sleeve 62 is rotatably connected to the motor shaft of the drive motor 61, and is used to absorb radial forces on the motor shaft, thereby stabilizing and protecting the motor shaft, and preventing the motor shaft and the cutter head device from bending and being damaged;

[0054] The cutter head sheath 63, the top of the cutter head sheath 63 is fixedly connected to the motor shaft of the driving motor 61, the cutter head sheath 63 is located at the bottom of the shaft sleeve 62, and is used to realize the rotation of the cutting mechanism and protect the tool at the same time. The cutter head sheath 63 includes a sheath base 631, the front of the sheath base 631 is fixedly connected to a sheath slide 632, the front of the sheath slide 632 is provided with a rectangular blind hole, the back of the rectangular blind hole of the sheath slide 632 is fixedly connected to a buffer block 633, the inside of the sheath slide 632 is slidably connected to a sliding cutter 64, the inside of the sheath slide 632 is fixedly connected to a circular hole plate, and the circular hole plate is slidably connected to the sliding cutter 64 Then, the sliding cutter 64 is located on the front of the buffer block 633, a pressure sensor 634 is fixedly connected to one side of the inner part of the sheath slide 632, and the pressure sensor 634 is electrically connected to the control cabinet of the control mechanism 7 through a wire, and a bump plate 635 is fixedly connected to the right side of the outer surface of the sheath slide 632. The number of the sheath slide 632, the buffer block 633, the pressure sensor 634, and the bump plate 635 is two, and the other is located on the back of the sheath base 631. The sheath slide 632, the buffer block 633, the pressure sensor 634, and the bump plate 635 are symmetrically distributed about the center point of the sheath base 631;

[0055] The sliding cutter 64 is slidably connected to the inside of the cutter head sheath 63, and is used to realize the function of cutting vegetation. The sliding cutter 64 includes a tail slider 641, and the front of the tail slider 641 is fixedly connected to a middle body 642 through a metal rod, and the metal rod is slidably connected to the circular hole plate of the sheath slide 632, and the front of the middle body 642 is fixedly connected to a cutting knife 643, and the cutting knife 643 is slidably connected to the inside of the sheath slide 632. The middle body 642 is located inside the circular hole plate of the sheath slide 632, and the front of the tail slider 641 is fixedly connected to the circular hole plate of the sheath slide 632 through a spring, and the spring is slidably connected to the metal rod;

[0056] Hammer frame brush plate 65, hammer frame brush plates 65 are fixedly connected to the left and right sides of the sheath base 631, a metal trapezoidal block is fixedly connected to the front of the hammer frame brush plate 65 for hammering larger solid debris entering the inside of the mower, a nylon brush is arranged at the bottom of the hammer frame brush plate 65, and the hammer frame brush plates 65 are symmetrically distributed about the center point of the sheath base 631;

[0057] The armrest mechanism 8 includes a vertical bracket 81, which is fixedly connected to the top of the chassis 11. There are two vertical brackets 81 and they are symmetrically distributed on the top of the chassis 11. A horizontal support 82 is fixedly connected to the right side of the vertical bracket 81. A control panel 83 is fixedly connected to the front of the horizontal support 82. The control panel 83 is electrically connected to the controller of the control mechanism 7 through a wire.

[0058] The debris collection box 9 includes a box body 91 for collecting cut vegetation debris. The front of the box body 91 is fixedly connected to the back of the chassis 11 , and the left and right sides of the box body 91 are rotatably connected with bottom wheels 92 .

[0059] When in use, the operator holds the horizontal support frame 82 with both hands and controls the lawn mower by pressing the buttons on the front of the control panel 83 with the right hand;

[0060] When the lawn mower is started, the drive motor 61 is started, and the drive motor 61 drives the cutter head sheath 63 to rotate, and the cutter head sheath 63 drives the sliding cutter 64 and the hammer frame brush plate 65 to rotate. The sliding cutter 64 is subjected to the centrifugal force during rotation, and slides to the outside inside the sheath slide 632, while squeezing the spring. As the speed increases, the cutting knife 643 gradually slides out of the sheath slide 632, and then remains exposed to the outside of the sheath slide 632 under the action of centrifugal force. At the same time, the tail slider 641 is in full contact with the buffer block 633, and the buffer block 633 feeds back the pressure value received to the controller of the control mechanism 7. , so that the control mechanism 7 can regulate the speed of the drive motor 61. At this time, the cutting knife 643 cuts the vegetation it passes through under the drive motor 61. In this process, the cutting knife 643 cuts the vegetation, and the force when cutting the vegetation is transmitted to the tail slider 641 through the middle body 642, and then transmitted to the buffer block 633 through the tail slider 641. When the blade of the cutting knife 643 becomes blunt, the force on the tail slider 641 increases, and then the force transmitted to the buffer block 633 increases. After receiving the feedback data from the buffer block 633, the control cabinet of the control mechanism 7 increases the speed of the drive motor 61, thereby maintaining the cutting efficiency;

[0061] During the cutting process, the lug plate 635 and the hammer frame brush plate 65 beat the plant debris gathered after cutting to break up the gathered plant debris and prevent it from hindering the cutting knife 643 from cutting the vegetation. The plant debris is scraped by the nylon brush at the bottom of the hammer frame brush plate 65 to rotate and is thrown to the back of the mowing knife mechanism 6. Then, the box body 91, driven by the chassis 11, collects the thrown plant debris into the inside of the box body 91.

[0062] Example 4, please refer to Figure 1-10 Based on the first, second and third embodiments, the present invention provides a technical solution: a method for using a lawn mower with a cutter head protection structure:

[0063] S1, the user holds the horizontal support frame 82 with both hands, and controls the control mechanism 7 to start the entire lawn mower by touching the control panel 83 with fingers, and at the same time, the control mechanism 7 controls the lawn mower mechanism 6 to start;

[0064] S2, the user controls the power mechanism 2 to start through the control panel 83, and after the power mechanism 2 is started, the entire lawn mower moves and cuts the vegetation in the area where it is needed to be cut;

[0065] S3. During the cutting process, the obstacle removal protection mechanism 4 will block larger solid obstacles appearing in the forward direction, and at the same time, the air pump assembly 5 sucks in external air for compression, and ejects high-speed airflow through the obstacle removal protection mechanism 4, thereby clearing the solid obstacles appearing in the forward direction of the lawn mower;

[0066] S4. If some solid obstacles block the lawn mower from moving forward, the obstacle removal protection mechanism 4 sends a signal to the controller of the control mechanism 7 after being blocked, thereby controlling the motor of the power mechanism 2 to reverse and then stop rotating, thereby preventing damage to the lawn mower.

[0067] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A lawn mower with a cutter head protection structure, comprising a body (1), characterized in that: The machine body (1) comprises a chassis (11), the front of the chassis (11) is fixedly connected to a front mounting frame (12), the left and right sides of the chassis (11) are rotatably connected to a power mechanism (2), the left and right sides of the chassis (11) are fixedly connected to a guard plate group (3), the bottom of the front mounting frame (12) is rotatably connected to an obstacle removal protection mechanism (4), the top of the chassis (11) is fixedly connected to an air pump assembly (5), the top of the chassis (11) is rotatably connected to a mower mechanism (6), the top of the chassis (11) is fixedly connected to a control mechanism (7), the top of the chassis (11) is fixedly connected to an armrest mechanism (8), and the back of the chassis (11) is fixedly connected to a debris collection box (9); The mowing blade mechanism (6) comprises: A drive motor (61), the drive motor (61) being fixedly connected to the top of the chassis (11), the drive motor (61) being electrically connected to the control mechanism (7) via a wire, and being used to provide power for the entire mowing blade mechanism (6); A shaft sleeve (62), the shaft sleeve (62) being fixedly connected to the bottom of the chassis (11), the interior of the shaft sleeve (62) being rotatably connected to the motor shaft of the drive motor (61) for stabilizing and protecting the motor shaft; A cutter head sheath (63), the top of the cutter head sheath (63) being fixedly connected to the motor shaft of the drive motor (61), the cutter head sheath (63) being located at the bottom of the shaft sleeve (62) and being used to realize the rotation of the cutting mechanism and protect the cutter at the same time; A sliding cutter (64) is slidably connected to the inside of the cutter head sheath (63) and is used to achieve the function of cutting vegetation.

2. A lawn mower with a cutter head protection structure according to claim 1, characterized in that: The machine body (1) is made of stainless steel, a crossbeam is fixedly connected to the bottom of the front mounting frame (12), the obstacle removal protection mechanism (4) is located on the front of the front mounting frame (12), the air pump assembly (5) is located on the back of the obstacle removal protection mechanism (4), the mowing blade mechanism (6) is located on the back of the air pump assembly (5), the control mechanism (7) is located on the back of the mowing blade mechanism (6), the armrest mechanism (8) is located on the back of the control mechanism (7), the debris collection box (9) is located at the bottom of the armrest mechanism (8), and the control mechanism (7) includes a battery box, the battery box is located on the top of the chassis (11), the top of the battery box is fixedly connected to a controller, and the controller is electrically connected to the battery box.

3. A lawn mower with a cutter head protection structure according to claim 2, characterized in that: The power mechanism (2) comprises auxiliary wheels (21), the number of the auxiliary wheels (21) being two in total and being rotatably connected to the left and right sides of the front mounting frame (12), the left and right sides of the interior of the chassis (11) being fixedly connected to power motors (23), the power motors (23) being DC motors, the power motors (23) being electrically connected to a controller of a control mechanism (7) via a wire, the power motors (23) being fixedly connected to power wheels (22) via a motor shaft, the power wheels (22) being located on the outer surface of the chassis (11), the number of the power wheels (22) being two and being symmetrically distributed on the left and right sides of the chassis (11), and being used to drive the entire lawn mower to move.

4. A lawn mower with a cutter head protection structure according to claim 3, characterized in that: The guard plate group (3) comprises a front guard plate (31), the left side of the chassis (11) being fixedly connected to the front guard plate (31), the number of the front guard plates (31) being two and being symmetrically distributed on the left and right sides of the chassis (11), the left side of the chassis (11) being fixedly connected to the rear guard plate (32), the number of the rear guard plates (32) being two and being symmetrically distributed on the left and right sides of the chassis (11), the front guard plate (31) being located between the auxiliary wheel (21) and the power wheel (22), and the rear guard plate (32) being located on the back of the power wheel (22).

5. A lawn mower with a cutter head protection structure according to claim 4, characterized in that: The obstacle removal protection mechanism (4) comprises a jet blocking shovel (41), the jet blocking shovel (41) comprising a shovel body (411), the top of the shovel body (411) being rotatably connected to the bottom of the front mounting frame (12), the back of the shovel body (411) being fixedly connected to a crossbeam at the bottom of the front mounting frame (12) via a spring, the shovel body (411) being provided with a hollow structure inside, the cross section of the left side of the hollow structure being triangular, the shovel body (411) being fixedly connected to a jet chamber (412) inside, the jet chamber (412) 12) The front side is connected to the front side of the shovel body (411) through a rectangular through hole, the back side of the jet chamber (412) is connected to the back side of the shovel body (411) through a circular through hole, the front side of the cross beam of the front mounting frame (12) is fixedly connected to a sensor assembly (42), the sensor assembly (42) comprises a slide bar, the front side of the slide bar is rotatably connected to a pulley, the pulley is slidably connected to the back side of the shovel body (411), a distance sensor is fixedly connected inside the slide bar, and the distance sensor is electrically connected to a controller of the control mechanism (7) through a wire.

6. A lawn mower with a cutter head protection structure according to claim 5, characterized in that: The air pump assembly (5) comprises a pump body (51), the bottom of the pump body (51) being fixedly connected to the top of the chassis (11), the top of the pump body (51) being connected to a high-pressure gas tank (52), the front of the high-pressure gas tank (52) being connected to the back of the shovel body (411) via a rubber tube, and the high-pressure gas tank (52) being electrically connected to a control cabinet of the control mechanism (7) via a wire.

7. A lawn mower with a cutter head protection structure according to claim 6, characterized in that: The blade head sheath (63) comprises a sheath base (631), the front face of the sheath base (631) being fixedly connected to a sheath slide (632), the front face of the sheath slide (632) being provided with a rectangular blind hole, the back face of the rectangular blind hole of the sheath slide (632) being fixedly connected to a buffer block (633), the interior of the sheath slide (632) being slidably connected to a sliding cutter (64), the interior of the sheath slide (632) being fixedly connected to a circular hole plate, the circular hole plate being slidably connected to the sliding cutter (64), the sliding cutter (64) being located on the front face of the buffer block (633), and the interior of the sheath slide (632) being fixedly connected to a circular hole plate. A pressure sensor (634) is fixedly connected to one side, and the pressure sensor (634) is electrically connected to a control cabinet of a control mechanism (7) via a wire. A bump plate (635) is fixedly connected to the right side of the outer surface of the sheath slide (632). The number of the sheath slide (632), the buffer block (633), the pressure sensor (634), and the bump plate (635) is two, and the other is located on the back of the sheath base (631). The sheath slide (632), the buffer block (633), the pressure sensor (634), and the bump plate (635) are symmetrically distributed about the center point of the sheath base (631).

8. The lawn mower with a cutter head protection structure according to claim 7, characterized in that: The sliding cutter (64) comprises a tail slider (641), the front of the tail slider (641) being fixedly connected to a middle body (642) via a metal rod, the metal rod being slidably connected to a circular hole plate of a sheath slide (632), the front of the middle body (642) being fixedly connected to a cutting knife (643), the cutting knife (643) being slidably connected to the inside of the sheath slide (632), the middle body (642) being located inside the circular hole plate of the sheath slide (632), and the tail slider (641) ) is fixedly connected to the circular hole plate of the sheath slide (632) through a spring, and the spring is slidably connected to the metal rod. The left and right sides of the sheath base (631) are fixedly connected to hammer rack brush plates (65), and a nylon brush is arranged at the bottom of the hammer rack brush plate (65). The front of the hammer rack brush plate (65) is fixedly connected to a metal trapezoidal block for hammering larger solid debris entering the interior of the lawn mower. The hammer rack brush plates (65) are symmetrically distributed about the center point of the sheath base (631).

9. A lawn mower with a cutter head protection structure according to claim 8, characterized in that: The armrest mechanism (8) comprises a vertical bracket (81), the vertical bracket (81) being fixedly connected to the top of the chassis (11), the number of the vertical brackets (81) being two and being symmetrically distributed on the top of the chassis (11), the right side of the vertical bracket (81) being fixedly connected to a transverse support bracket (82), the front side of the transverse support bracket (82) being fixedly connected to a control panel (83), the control panel (83) being electrically connected to a controller of the control mechanism (7) via a wire, the debris collection box (9) comprising a box body (91) for collecting cut vegetation debris, the front side of the box body (91) being fixedly connected to the back side of the chassis (11), and the left and right sides of the box body (91) being rotatably connected to bottom supporting wheels (92).

10. A method for using a lawn mower with a cutter head protection structure according to claim 9, characterized in that: S1, the user holds the horizontal support frame (82) with both hands and controls the control mechanism (7) to start the entire lawn mower by touching the control panel (83) with a finger, and at the same time the control mechanism (7) controls the lawn mower mechanism (6) to start; S2, the user controls the power mechanism (2) to start through the control panel (83), and after the power mechanism (2) is started, the entire lawn mower moves and cuts the vegetation in the area where it is required to be cut; S3. During the cutting process, the obstacle removal protection mechanism (4) blocks larger solid obstacles that appear in the forward direction, and at the same time, the air pump assembly (5) sucks in external air for compression, and ejects high-speed airflow through the obstacle removal protection mechanism (4), thereby clearing the solid obstacles that appear in the forward direction of the lawn mower; S4. If a solid obstacle blocks the lawn mower from moving forward, the obstacle removal protection mechanism (4) sends a signal to the controller of the control mechanism (7) after being blocked, thereby controlling the motor of the power mechanism (2) to reverse and then stop rotating, thereby preventing damage to the lawn mower.

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