Grass collecting compartment electric grass pouring mechanism for mower and grass pouring control method

Abstract

The invention relates to a grass collecting compartment electric grass pouring mechanism for a mower and a grass pouring control method, and belongs to the technical field of mower equipment. According to the mechanism, a grass collecting compartment is arranged at the tail end of a mower body, a sealing frame is arranged between the mower body and the grass collecting compartment, and a left rotating support and a right rotating support are arranged on the sealing frame; the opening part of the grass collecting compartment faces the sealing frame to form a sealed space; the grass collecting box is arranged through the left rotating support and the right rotating support, and a transmission mechanism used for changing the inclination angle of the grass collecting box is arranged in the grass collecting box. A grass clippings collecting opening communicated with the grass collecting compartment is formed in the sealing frame. According to the grass collecting compartment electric grass pouring mechanism for the mower, the grass collecting compartment which is electrically driven can be turned over to quickly carry out grass pouring operation, time and labor are saved compared with manual grass pouring operation, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to an electric grass-tipping mechanism and grass-tipping control method for a lawnmower, belonging to the technical field of lawnmower equipment. Background Technology

[0002] A lawnmower is a mechanical tool used for trimming lawns, vegetation, etc., playing an important role in agricultural production and landscaping. Lawnmowers are available with either diesel or gasoline engines. They consist of a blade disc, engine, wheels, drive mechanism, blades, handle, controls, and seat. The high-speed rotation of the blades, powered by the engine, significantly increases output speed, saving workers' time and reducing labor costs.

[0003] Currently, the lawn mowing industry uses the following methods to process the mowed grass: Chopping grass directly and scattering it on the grass without collecting it is convenient and cost-free, but if the grass is not chopped thoroughly, some of the grass will die from lack of oxygen.

[0004] The method of collecting straw in straw bags, followed by manual unloading and emptying of the bags, is low in overall cost, but the unloading and handling of the straw bags is labor-intensive and time-consuming.

[0005] When using hay bins to collect hay, it is necessary to manually open the bins and empty the hay. If the hay is heavy, you need to hold the hay-pouring rods with both hands and pull and press them hard.

[0006] Due to the limited space for movement of structural components such as the hay bale, the hay-felling angle is not large enough, such as 30~45°. Figure 1 As shown in the figure, it is easy to cause the grass to be dumped incompletely. If you want to dump the grass completely, you need to get off the vehicle and dig the grass out of the grass box, which is time-consuming and labor-intensive, and the weeding efficiency is affected. Each time the grass is dumped completely, it takes 3 to 5 minutes, and there will be residual grass clippings left in the grass box, which is not easy to dump completely. Summary of the Invention

[0007] This invention addresses the above-mentioned problems by providing an electric hay-discharging mechanism and hay-discharging control method for a lawnmower's hay collection box, thus solving the problem of the time-consuming and laborious nature of manual hay-discharging.

[0008] The present invention adopts the following technical solution: The present invention discloses an electric grass-collecting chamber emptying mechanism for a lawnmower, comprising a lawnmower body and a matching grass-collecting chamber. The grass-collecting chamber is located at the tail end of the lawnmower body, and a sealing frame is provided between the lawnmower body and the grass-collecting chamber. The sealing frame is provided with a left rotation support and a right rotation support. The opening of the hay collection box faces the sealing frame to form a sealed space; The grass collection box is arranged through the left rotation support and the right rotation support, and the grass collection box is equipped with a transmission mechanism for changing the tilt angle of the grass collection box. The sealing frame is equipped with a grass clipping collection port that is connected to the grass collection box.

[0009] The electric grass-discharging mechanism for the grass-collecting chamber of the lawnmower described in this invention has a tilting angle of 0°-100° from horizontal to tilted.

[0010] The present invention relates to an electric grass-discharging mechanism for a lawnmower's grass collection compartment, wherein the grass collection compartment includes a grass frame and a grass bag; A rotating rod is fixed to the upper part of the grass frame; the rotating rod is mounted on the left rotating support and the right rotating support; An electric tilting mechanism is arranged on the left or right swivel support; The grass bag is placed over the outside of the grass frame.

[0011] The electric tipping mechanism for a lawnmower's grass collection box according to the present invention includes: a tipping motor, a gear transmission assembly, and a tipping gear. A grass-tipping motor and gear transmission assembly are provided on the support part located on the left-hand or right-hand rotating support; The grass-turning gear is fixed on the rotating rod located on the grass frame; The grass-felling motor drive gear transmission assembly meshes with the grass-felling gear, thereby causing the rotating rod to rotate.

[0012] The electric grass-tipping mechanism for a lawnmower described in this invention comprises, in its gear transmission assembly, a motor gear, a primary transmission gear, and a secondary transmission gear. The motor gear meshes with the primary transmission gear, and the primary transmission gear and the secondary transmission gear are arranged coaxially. The secondary transmission gear meshes with the grass-discharging gear; The aforementioned grass-pouring gear is a sector gear.

[0013] The electric grass-discharging mechanism for a lawnmower described in this invention includes a rotation limit block arranged on the rotating rod, and the rotation limit block rotates coaxially with the rotating rod.

[0014] The electric tipping mechanism for the grass collection box of the lawnmower described in this invention is powered by a DC power supply. The electric tilting mechanism control unit includes: a hay tipping limit switch module, a return limit switch module, and a three-position switch; The three-position switch is equipped with a hay-falling position, a wheel-free position, and a reset position; The three-position switch's hay-falling position is connected to the hay-falling limit switch module and forms a circuit with the hay-falling motor; the three-position switch's reset position is connected to the return limit switch module and forms a circuit with the hay-falling motor. A photoelectric sensor is located at the bottom of the left-hand or right-hand rotating support to detect the discharge of grass clippings from the grass collection chamber during the grass dumping process.

[0015] The present invention relates to a method for controlling the tipping of the electric tipping mechanism of the grass collection box for a lawnmower. This control method is specifically implemented by the vehicle's VCU (Vehicle Control Unit). S1. After the lawnmower finishes mowing, the three-position switch is manually operated to switch to the hay-returning position; the vehicle's VCU sends a command signal to the hay-returning limit switch module. S2, the limit switch module controls the electric tilting mechanism to tilt the grass collection box downwards, and the opening end of the grass collection box gradually separates from the sealing plate. S3. When the grass collection box is rotated to a certain angle, the grass clippings begin to fall. The photoelectric sensor located in the grass collection box begins to detect the moving grass clippings signal and feeds it back to the vehicle's VCU. S4. The photoelectric sensor monitors the flow of hay clippings in the hay collection box at intervals. If there is no flow of hay clippings, it will issue an alert. S5. After receiving the reminder message from step S4, the manual operator can control the grass collection box to return to its original position.

[0016] The grass-tipping control method of the electric grass-tipping mechanism for the grass-collecting box of the lawnmower described in this invention detects whether there is a manual reset signal when the photoelectric sensor fails to detect the grass clipping flow signal. If a manual operation signal is received, a reset signal will be executed. If there is no feedback signal from manual operation, the grass will stop falling after the rotating limit block touches the grass falling limit switch. The grass collection box will be controlled to return to its original position after the manual switch is moved to the reset position.

[0017] The grass-tipping control method of the electric grass-tipping mechanism for the grass collection box of the lawnmower described in this invention has a detection time interval of 0.5S-1s for the photoelectric sensor in step S3. Beneficial effects

[0018] The electric grass-discharging mechanism for a lawnmower provided by this invention uses an electrically driven grass-discharging box that can be flipped to quickly discharge grass, saving time and effort compared to manual grass discharging and improving work efficiency.

[0019] The electric hay-discharging mechanism for a lawnmower provided by this invention features a frame structure for the hay collection compartment, which better supports the outer hay bag and increases the capacity for loading hay clippings. The opening of the hay collection compartment is open, which better collects hay clippings conveyed by the sealed hay clipping collection port, preventing hay clippings from accumulating and clogging inside the hay collection compartment.

[0020] The electric grass-discharging mechanism for a lawnmower provided by this invention enables the grass-discharging chamber to be tilted based on an electric tilting mechanism. After the grass-discharging chamber is tilted, its opening is disengaged from the sealing frame, and grass clippings can be poured out from the opening. At the same time, the electric tilting mechanism can also control the tilting angle of the grass-discharging chamber, which can completely empty the grass clippings. The grass-discharging process takes 35 to 45 seconds from the grass-discharging chamber to its return to its original position.

[0021] This invention is based on the control method adopted by the hay-discharging mechanism. The photoelectric sensor monitors the flow rate of hay clippings in the hay-collecting chamber. During the hay-discharging process, the rotation posture of the hay-collecting chamber can be switched manually. It can return to its original position without waiting for the hay-collecting chamber to complete the entire flipping process, which greatly reduces the hay-discharging time. Attached Figure Description

[0022] Figure 1 This is a diagram of the existing lawnmower's hay-dumping process; Figure 2 This is a schematic diagram of a lawnmower incorporating the electric mowing mechanism of the present invention; Figure 3 This is an exploded structural diagram of the grass collection box and lawnmower of the present invention; Figure 4 This is a schematic diagram of the hay collection box structure of the present invention; Figure 5 This is a schematic diagram of the grass collection box frame structure of the present invention; Figure 6 This is a side view of the flipping mechanism and its components, enlarged schematic diagram. Figure 7 is an enlarged schematic diagram of the flipping mechanism of the present invention from another side view of its structure and components; Figure 8 This is a schematic diagram of the control circuit of the present invention; Figure 9 This is a side view and a three-dimensional schematic diagram of the flipping process of the present invention.

[0023] In the diagram: 1-Hay collection box, 2-Sealing frame, 3-Right rotation support, 4-Left rotation support, 5-Hay frame, 6-Hay bag, 7-End cap, 8-Rotating rod, 9-Fasting screw, 10-Rotation limit block, 11-Hay tipping gear, 12-Hay box frame, 13-Return limit switch, 14-Secondary transmission gear, 15-Hay tipping motor, 16-Drive shaft, 17-Rear fuse, 18-Hay clipping collection port, 19-DC-DC power module, 20-Front fuse, 21-DC power supply, 22-Three-position switch, 23-Return limit switch module, 24-First-stage transmission gear, 25-Motor gear, 26-Photoelectric sensor. Detailed Implementation

[0024] To make the objectives and technical solutions of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] like Figure 1 As shown: The existing lawnmower's grass-discharging structure achieves grass-discharging operation through a grass-discharging rod. First, the grass-discharging rod is pulled out from its original position. Then, the grass-discharging rod is moved, and the grass collection box opening separates from the vehicle body. The grass is then discharged under the action of gravity.

[0026] like Figure 2 , Figure 3 As shown: The electric grass-discharging mechanism for the lawnmower of the present invention has a grass-collecting compartment 1 located at the rear end of the lawnmower body A. The grass-collecting compartment 1 and the grass-collecting compartment sealing frame 2 of the lawnmower body A are tightly closed to form a sealed grass-collecting space. If both are opened, the grass will be discharged from the space. A right-turning support 3 and a left-turning support 4 are provided on the end face of the sealing frame 2 facing the grass-collecting compartment 1. The sealing frame 2 has a grass clipping collection port 18 that communicates with the grass-collecting compartment.

[0027] like Figure 4 , Figure 5 As shown: The hay collection box 1 includes a hay frame 5 and a hay bag 6; the hay bag 6 is placed on the outside of the hay frame 5.

[0028] The main body of the grass frame 5 is a cubic grass box frame 12, with connecting side plates on both sides of the top of the grass box frame 12; a rotating rod 8 is provided on the upper part of the cubic frame structure grass frame 5; the two ends of the rotating rod 8 are fixed to the connecting side plates by end caps 7 and fastening screws 9 respectively; the rotating rod 8 is mounted on the right rotating support 3 and the left rotating support 4; a grass-tipping gear 11 and a rotation limit block 10 are welded and arranged on the rotating rod 8.

[0029] like Figure 6 , Figure 7 The diagram shows the tipping mechanism of the present invention, specifically a grass-tipping motor 15 arranged on the right rotating support 3. The grass-tipping motor 15 serves as a drive unit, outputting torque via a motor gear 25. The right rotating support 3 is equipped with a primary transmission gear 24 and a secondary transmission gear 14 coaxially arranged via a transmission shaft 16. The motor gear 25 meshes with the primary transmission gear 24, driving the secondary transmission gear 14 to rotate simultaneously with the primary transmission gear 24. As shown in the diagram, the grass-tipping gear 11 is a sector gear; the secondary transmission gear 14 meshes with the grass-tipping gear 11.

[0030] The transmission ratio between the motor gear 25 and the primary transmission gear 24 in this invention is 1:0.25, and the transmission ratio between the primary transmission gear 24 and the secondary transmission gear 14 is 1:0.459. Driven by the grass-tipping motor 15, the motor gear 25 rotates, meshing with the primary transmission gear 24 via the drive component 24, causing the mechanism to undergo a first-stage speed reduction and torque increase. The primary transmission gear 24 drives the secondary transmission gear 14 to rotate synchronously via the transmission shaft 16. The secondary transmission gear 14 meshes with the grass-tipping gear 11, causing the mechanism to undergo a second-stage speed reduction and torque increase. Since the grass-tipping gear 11 and the rotating rod 8 are fixedly connected, the rotation of the grass-tipping gear 11 also generates torque, allowing the rotating rod 8 to rotate on the support structures of the right rotating support 3 and the left rotating support 4. This ensures that the grass-tipping gear 11 drives the grass-collecting box 1 to rotate, completing the opening and closing with the sealing frame 2, thus fulfilling the functions of grass-tipping and forming a grass-collecting and sealing space.

[0031] The present invention is located at ( Figure 7 A photoelectric sensor 26 is provided on the right-hand rotation support 3 or the left-hand rotation support 4. The photoelectric sensor 26 does not rotate with the grass frame 5.

[0032] Based on the grass-turning and tipping mechanism combined with, for example Figure 8 The control circuit of this invention uses a DC power supply to power the grass-tipping and turning mechanism. A DC power supply 21 is installed on the body of the lawnmower A. A three-position switch 22 is provided on the control panel on one side of the driver's seat. The three-position switch 22 is respectively the grass-tipping position, wheel neutral position, and reset position. The sealing frame 2 is equipped with a rear fuse 17, a DC-DC power module 19, a front fuse 20, and a return limit switch module 23.

[0033] like Figure 9 As shown: A grass-tipping control method based on the electric grass-tipping mechanism of the grass collection box for a lawnmower. The method converts the DC power supply of the whole vehicle into the power required by the grass-tipping motor through the front fuse 20 and the DC-DC power module 19; the positive current flows into the three-position switch 22 through the rear fuse 17.

[0034] The diagram shows the three dynamic stages of the tipping process from left to right. In the first stage, the operator adjusts the three-position switch 22 on the vehicle body to the hay-discharging position. The current flows out through the hay-discharging port of the switch, flows into the positive terminal of the hay-discharging motor 15 through the normally closed terminal of the hay-discharging limit switch 13, and flows out from the negative terminal of the hay-discharging motor 15 back to the negative terminal of the DC-DC power module 19, forming a closed circuit. The hay-discharging motor 15 rotates forward, and drives the hay-collecting box 1 to flip through the corresponding mechanical mechanism of the present invention. At this time, the box opening opens downward, and the hay clippings fall freely. In this first step, when the hay-collecting motor 15 rotates forward, it sends a signal to the vehicle's VCU via the DC-DC power module 19. After receiving the signal for 5 seconds, the photoelectric sensor 26 in the hay collection box 1 is activated. The photoelectric sensor 26 used in this invention is a conventional sensing module. During the hay-washing process, the photoelectric sensor 26 performs a horizontal sweep on the opening at intervals of 0.5s-1s. After debugging, when the flow of hay clippings is detected, it is determined that hay is being washed. During the hay-washing process, the photoelectric sensor 26 does not provide any feedback signal.

[0035] In the second stage, depending on the actual condition of the hay (dry, wet, etc.), the falling speed of the hay is not consistent. If the photoelectric sensor 26 does not detect the flow of hay for several consecutive times, it will determine that the hay clearing is over. The photoelectric sensor 26 sends a signal to the vehicle's VCU. The vehicle's VCU then feeds back to the buzzer and indicator lights installed on the vehicle, which will emit a prompt sound and flashing light to indicate to the operator that the hay has been cleared and the vehicle can return.

[0036] After the hay-pouring process was completed, the hay collection box 1 did not completely rotate (e.g. Figure 9 (In the middle tilting state); the operator can then adjust it to the reset position using the three-position switch 22. After the reset position is activated, the vehicle's VCU receives a signal during this stage and controls the photoelectric sensor 26 to stop working. Current flows out through the switch reset port, flows into the negative terminal of the hay-tipping motor 15 through the normally closed terminal of the hay-tipping limit switch 13, and flows out from the positive terminal of the hay-tipping motor 15 back to the negative terminal of the DC-DC power module 19, forming a closed loop. The hay-tipping motor 15 reverses, and through the corresponding mechanical mechanism of this invention, it drives the hay-collecting box 1 to return to its original position. When the hay-collecting box 1 touches the return limit switch, the limit switch opens, the loop is broken, the hay-tipping motor 15 stops rotating, and the return stops. At this time, the opening of the hay-collecting box 1 is closed with the vehicle body A, forming a closed space for collecting hay.

[0037] In the third stage, after the hay clippings in the hay collection box 1 have been emptied in the second step and the buzzer and indicator lights have emitted a prompt sound and flashing light, if the operator does not actually perform any operation, the hay collection box 1 will continue to complete the current flipping stroke until the hay emptying limit switch 13 touches the rotation limit block 10, the hay emptying limit switch opens, and the hay emptying stops; at this time, the flipping angle of the hay collection box 1 is the maximum angle, that is, between 90° and 100°, and the prompt sound and flashing light emitted by the buzzer and indicator lights will stop working after a period of time, waiting for the operator to perform the reset operation; When the operator presses the switch to the reset position (after the vehicle VCU receives the signal, it controls the photoelectric sensor 26 to stop working), the current flows out through the switch reset port, flows into the negative terminal of the hay-tipping motor through the normally closed terminal of the return limit switch 13, and flows out through the positive terminal of the hay-tipping motor 15, returning to the negative terminal of the DC-DC power module 19, forming a closed loop. The hay-tipping motor 15 reverses, and through the corresponding mechanical mechanism of the present invention, it drives the hay collection box opening to return to the position. The hay collection box opening 1 is now closed with the vehicle body A, forming a closed space for collecting hay.

[0038] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electric hay-collecting chamber unloading mechanism for a lawnmower, comprising a lawnmower body and a matching hay-collecting chamber, characterized in that: A grass collection box is located at the tail end of the lawnmower body, and a sealing frame is provided between the lawnmower body and the grass collection box. The sealing frame is provided with a left rotation support and a right rotation support. The opening of the hay collection box faces the sealing frame to form a sealed space; The grass collection box is arranged through the left rotation support and the right rotation support, and the grass collection box is equipped with a transmission mechanism for changing the tilt angle of the grass collection box. The sealing frame is equipped with a grass clipping collection port that is connected to the grass collection box.

2. The electric hay-unloading mechanism for a lawnmower according to claim 1, characterized in that, The angle at which the hay collection box flips from horizontal to vertical is 0°-100°.

3. The electric hay-unloading mechanism for a lawnmower's hay collection box according to claim 1, characterized in that, Hay collection boxes consist of a hay frame and hay bags; A rotating rod is fixed to the upper part of the grass frame; the rotating rod is mounted on the left rotating support and the right rotating support; An electric tilting mechanism is arranged on the left or right swivel support; The grass bag is placed over the outside of the grass frame.

4. The electric hay-unloading mechanism for a lawnmower's hay collection box according to claim 1 or 3, characterized in that, The electric tipping mechanism includes: a grass-tipping motor, a gear transmission assembly, and a grass-tipping gear; A grass-tipping motor and gear transmission assembly are provided on the support part located on the left-hand or right-hand rotating support; The grass-turning gear is fixed on the rotating rod located on the grass frame; The grass-felling motor drive gear transmission assembly meshes with the grass-felling gear, thereby causing the rotating rod to rotate.

5. The electric hay-unloading mechanism for a lawnmower according to claim 4, characterized in that, The gear transmission assembly includes: a motor gear, a primary transmission gear, and a secondary transmission gear; The motor gear meshes with the primary transmission gear, and the primary transmission gear and the secondary transmission gear are arranged coaxially. The secondary transmission gear meshes with the grass-discharging gear; The aforementioned grass-pouring gear is a sector gear.

6. The electric hay-unloading mechanism for a lawnmower according to claim 4, characterized in that, A rotation limiting block is arranged on the rotating rod, and the rotation limiting block rotates coaxially with the rotating rod.

7. The electric hay-unloading mechanism for a lawnmower according to claim 4, characterized in that, The electric tilting mechanism is powered by a DC power supply. The electric tilting mechanism control unit includes: a hay tipping limit switch module, a return limit switch module, and a three-position switch; The three-position switch is equipped with a hay-falling position, a wheel-free position, and a reset position; The three-position switch's hay-falling position is connected to the hay-falling limit switch module and forms a circuit with the hay-falling motor; the three-position switch's reset position is connected to the return limit switch module and forms a circuit with the hay-falling motor. A photoelectric sensor is located at the bottom of the left-hand or right-hand rotating support to detect the discharge of grass clippings from the grass collection chamber during the grass dumping process.

8. The method for controlling the tipping of the electric tipping mechanism of the grass collection box for a lawnmower according to any one of claims 1 to 7, characterized in that, This control method is controlled by the vehicle's VCU, and the specific control method is as follows: S1. After the lawnmower finishes mowing, the three-position switch is manually operated to switch to the hay-returning position; the vehicle's VCU sends a command signal to the hay-returning limit switch module. S2, the limit switch module controls the electric tilting mechanism to tilt the grass collection box downwards, and the opening end of the grass collection box gradually separates from the sealing plate. S3. When the grass collection box is rotated to a certain angle, the grass clippings begin to fall. The photoelectric sensor located in the grass collection box begins to detect the moving grass clippings signal and feeds it back to the vehicle's VCU. S4. The photoelectric sensor monitors the flow of hay clippings in the hay collection box at intervals. If there is no flow of hay clippings, it will issue an alert. S5. After receiving the reminder message from step S4, the manual operator can control the grass collection box to return to its original position.

9. The method for controlling the tipping of the electric tipping mechanism of the grass collection box for a lawnmower according to claim 8, characterized in that: When the photoelectric sensor fails to detect the grass clipping flow signal, it checks for a manual reset signal. If a manual operation signal is received, a reset signal will be executed. If there is no feedback signal from manual operation, the grass will stop falling after the rotating limit block touches the grass falling limit switch. The grass collection box will be controlled to return to its original position after the manual switch is moved to the reset position.

10. The method for controlling the tipping of the electric tipping mechanism of the grass collection box for a lawnmower according to claim 8, characterized in that: The detection time interval of the photoelectric sensor in step S3 is 0.5S-1s.

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