Middle-row rear grass collecting cutter head
By vertically mounting the main motor on the cutter head housing and designing a middle-row rear grass-collecting cutter head with the main and auxiliary motors rotating in opposite directions, the problems of increased frame length and grass leakage were solved, achieving a compact structure and efficient grass collection.
Patent Information
- Application Number
- CN202520018283.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-06
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-01-06
AI Technical Summary
The existing middle-row rear-collecting cutter head structure results in an increased frame length, poor reliability of the synchronous belt drive, and leakage of straw.
The main motor is vertically mounted on the cutter head housing, with its shaft fixedly connected to the main blade. It has a through hole and a grass discharge pipe. The auxiliary motor rotates in the opposite direction to the auxiliary blade, while the main and auxiliary blades rotate in the same direction. The main and auxiliary tail fins are designed to enhance airflow. The auxiliary blade cuts untrimmed grass, and the grass clippings enter the grass discharge pipe through the main and auxiliary grass discharge ports.
It achieves a shorter frame, a more compact structure, and eliminates grass leakage, thus improving grass collection efficiency and effectiveness.
Smart Images
Figure CN223652737U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to garden equipment technical field especially, relates to a middle row rear grass collecting cutter head. BACKGROUND
[0002] In the existing lawn maintenance field, especially in the large area lawn area such as park, golf course, playground, using the riding type lawn trimmer for lawn trimming can greatly improve the work efficiency. The working accessory cutter head of the traditional riding type lawn trimmer is mostly two or three cutter forms, generally right side grass rowing mode or through the right side conveying pipe to collect to the rear grass collecting box, and there is also through the middle row rear grass collecting mode to the rear grass collecting box.
[0003] The existing middle row rear grass collecting cutter head, in order to ensure that no grass is missed in the progress, the cutter head must be inclined to the relative advancing direction or synchronous belt transmission is used; the cutter head inclination will lead to the increase of the length space size of the rack, and the reliability of the synchronous belt transmission is poor.
[0004] The middle row rear grass collecting cutter head is used for the electric riding type lawn trimmer, so that the whole machine structure is more compact, and the grass collecting effect is better. CONTENT OF THE UTILITY MODEL
[0005] The utility model provides a middle row rear grass collecting cutter head, the grass collecting cutter head structure simplifies, reduces the overall space of the rack, and the structure of the lawn trimmer is more compact, there is no grass missing phenomenon in the turning, and the grass collecting efficiency and effect are improved.
[0006] The above purpose of the utility model is realized by the following technical scheme:
[0007] A middle row rear grass collecting cutter head, comprising a cutter head shell, a plurality of main motors are fixedly connected above the cutter head shell, the plurality of main motors are located on the same straight line and are vertically arranged with the movement direction of the cutter head shell, the rotating shafts of the main motors extend into the inner side of the cutter head shell and are fixedly connected with main knives, the cutter head shell between adjacent two main motors is provided with a through hole for allowing grass clippings to pass through, the cutter head shell is provided with a grass rowing pipeline in communication with the through hole, a plurality of grass rowing pipelines extend rearward and converge to the outlet of the grass rowing pipeline, and the rotation directions of adjacent two main motors are opposite and rotate inward relative to each other.
[0008] The above-mentioned middle row rear grass collecting cutter head, wherein the inner side of the cutter head shell is provided with a main knife air duct, the main knife air duct comprises a main baffle fixedly connected to the inner side of the cutter head shell and surrounding the main knife, and the side of the main baffle close to the through hole is provided with a main grass rowing opening in communication with the through hole.
[0009] In the aforementioned middle-row rear-collecting cutter disc, an auxiliary motor is fixedly connected to the cutter disc housing on the rear side of two adjacent main motors. The rotating shaft of the auxiliary motor extends into the inner side of the cutter disc housing and is fixedly connected to the auxiliary cutter. The inner side of the cutter disc housing has an auxiliary cutter air duct, which includes an auxiliary baffle fixedly connected to the inner side of the cutter disc housing and surrounding the auxiliary cutter. The auxiliary baffle and an adjacent main baffle are provided with a communicating auxiliary grass discharge port.
[0010] In the aforementioned middle-row rear grass-collecting blade disc, the rotation direction of the secondary blade is the same as the rotation direction of the main blade connected to the secondary grass-collecting inlet.
[0011] In the aforementioned middle-row rear grass-collecting cutter disc, the central shaft of the auxiliary motor is located on the bisector of the line connecting the central shafts of two adjacent main motors.
[0012] In the aforementioned middle-row rear grass-collecting blade disc, the difference between the distance between two adjacent main motor shafts and the sum of the radii of two adjacent main blades is the gap between the two adjacent main blades, and the diameter of the auxiliary blade is greater than the gap between the two adjacent main blades.
[0013] In the aforementioned middle-row rear grass-collecting blade disc, the two ends of the main blade are respectively provided with main tail wings, the two main tail wings are arranged opposite to the main blade, and the main tail wings are bent and extended toward one side of the blade disc shell.
[0014] In the aforementioned middle-row rear grass-collecting blade disc, the two ends of the secondary blade are respectively provided with secondary tail wings, the two secondary tail wings are arranged opposite to the secondary blade, and the secondary tail wings are bent and extended towards the blade disc shell.
[0015] In the aforementioned middle-row rear grass-collecting cutter disc, several vertical mounting plates are fixedly connected to the top of the outer side of the cutter disc housing.
[0016] In summary, the beneficial technical effects of this utility model are as follows:
[0017] This invention features several main motors fixedly connected above the cutter head housing. These motors are aligned on a straight line and perpendicular to the direction of movement of the cutter head housing. The shafts of the main motors extend into the inner side of the cutter head housing and are fixedly connected to the main blades. A through-hole for grass clippings is provided on the cutter head housing between two adjacent main motors. A grass discharge pipe communicating with the through-hole is located above the cutter head housing. Several grass discharge pipes extend rearward and converge at the outlet of the grass discharge pipe. The rotation directions of adjacent main motors are opposite and they rotate inwards relative to each other. This simplified grass-collecting cutter head structure reduces the overall space of the frame, making the lawn mower more compact. It also eliminates grass leakage when turning, improving grass collection efficiency and effectiveness. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the inner side of the cutter head shell of this utility model;
[0020] Figure 3 This is a schematic diagram of the main blade of this utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the secondary blade of this utility model.
[0022] The diagram shows: 1. Cutter head housing; 11. Through hole; 12. Main baffle; 121. Main grass discharge port; 13. Secondary baffle; 131. Secondary grass discharge port; 2. Main motor; 3. Main blade; 31. Main tail fin; 4. Grass discharge pipe; 5. Secondary motor; 6. Secondary blade; 61. Secondary tail fin; 7. Mounting plate. Detailed Implementation
[0023] The following is in conjunction with the appendix Figures 1-4 The present invention will be described in further detail below.
[0024] like Figure 1 , 2 As shown, a mid-row rear-collecting cutter disc includes a cutter disc housing 1, with several main motors 2 fixedly connected to the top of the cutter disc housing 1. The main motors 2 are located on the same straight line and are arranged perpendicular to the movement direction of the cutter disc housing 1. Figure 1 The direction of the dashed arrow in the figure indicates the direction of movement of the cutter head housing 1.
[0025] The shaft of the main motor 2 extends into the inner side of the cutter head housing 1 and is fixedly connected to the main blade 3. The cutter head housing 1 between two adjacent main motors 2 is provided with a through hole 11 for grass clippings to pass through. A grass discharge pipe 4 communicating with the through hole 11 is provided above the cutter head housing 1. Several grass discharge pipes 4 extend backward and converge to the outlet of the grass discharge pipe 4. The rotation directions of two adjacent main motors 2 are opposite and they rotate inward relative to each other.
[0026] like Figure 2 As shown, the inner side of the blade housing 1 is provided with a main blade air duct. The main blade air duct includes a main baffle 12 fixed to the inner side of the blade housing 1 and surrounding the main blade 3. The main baffle 12 has a main grass discharge port 121 that communicates with the through hole 11 on the side near the through hole 11. When the main blade 3 rotates, the grass cut by the main blade 3 enters the through hole 11 through the main grass discharge port 121 of the main blade air duct and is discharged through the outlet of the grass discharge pipe 4. The outlet of the grass discharge pipe 4 can be connected to the grass collection box of the lawn mower for collection and storage.
[0027] To prevent uncut grass from remaining between two adjacent main blades 3, auxiliary motors 5 are fixedly connected to the cutter head housing 1 on the rear side of the two adjacent main motors 2. The shaft of the auxiliary motor 5 extends into the inner side of the cutter head housing 1 and is fixedly connected to the auxiliary blade 6.
[0028] The number of main motor 2 and auxiliary motor 5 should be selected according to the size of the lawn, such as... Figure 1 , 2 The diagram shows the cutter head structure when there are two main motors 2 and one auxiliary motor 5.
[0029] In this embodiment, all the main blades 3 are identical in size and shape. The difference between the distance between the shafts of two adjacent main motors 2 and the sum of the radii of two adjacent main blades 3 is the gap between the two adjacent main blades. The diameter of the secondary blade 6 is larger than the gap between the two adjacent main blades. This ensures that when the secondary blade 6 rotates, it can cut and trim the lawn within the gap between the two adjacent main blades, avoiding undone lawn.
[0030] The distance between two adjacent main motors 2 can be increased as needed, which can increase the gap between two adjacent main blades, increase the cutting range, thereby reducing the number of main blades 3 and reducing production costs; the uncut grass left between two adjacent main blades can be cut by the auxiliary blades 6 behind the two adjacent main blades 3.
[0031] like Figure 2 As shown, there is a secondary blade air duct inside the cutter head housing 1. The secondary blade air duct includes a secondary baffle 13 fixed to the inner side of the cutter head housing 1 and surrounding the secondary blade 6. A secondary grass discharge port 131 is provided between the secondary baffle 13 and an adjacent main baffle 12.
[0032] The secondary blade 6 is responsible for trimming the lawn between two adjacent main blades. The secondary blade 6 can discharge the cut grass clippings into the air duct of the main blade connected to it, thus completing the functions of cutting, discharging, or collecting grass by the grass collection disc.
[0033] This blade head shortens the length of the lawnmower blade holder, eliminates grass leakage during movement and turning, has a more compact structure, and provides better grass collection.
[0034] The grass cut by the secondary blade 6 enters the main blade air duct through the secondary grass discharge port 131, and then enters the grass discharge pipe 4 through the main grass discharge port 121 and the through hole 11, and is finally discharged through the outlet of the grass discharge pipe 4.
[0035] The rotation direction of the secondary blade 6 is determined by the rotation direction of the main blade 3 in the main blade air duct that is connected to the air duct of the secondary blade.
[0036] like Figure 2 As shown, in this embodiment, the rotation direction of the secondary blade 6 is the same as the rotation direction of the main blade 3 in the connected main blade air duct.
[0037] As shown in Figure 2, the secondary blade 6 rotates counterclockwise, sending the cut grass through the secondary grass discharge port 131 into the main blade air duct where the main blade 3 rotates counterclockwise, and then through the main grass discharge port 121 and through hole 11 to be discharged into the grass discharge pipe 4. The other main blade 3 rotates clockwise, sending the cut grass through the main grass discharge port 121 and through hole 11 to be discharged into the grass discharge pipe 4.
[0038] like Figure 1 As shown, the central axis of the auxiliary motor 5 is located on the bisector of the line connecting the central axes of the two adjacent main motors 2, so as to ensure that all the grass in the gap between the two adjacent main blades is cut by the auxiliary blade 6.
[0039] like Figure 2 , 3 As shown, the two ends of the main blade 3 are respectively provided with main tail wings 31. The two main tail wings 31 are arranged opposite to the main blade 3, and the main tail wings 31 bend and extend toward the blade shell 1.
[0040] When the main blade 3 rotates, the main tail fin 31 can generate enough airflow to carry the cut grass through the main grass discharge port 121 and the through hole 11 into the grass discharge pipe 4.
[0041] like Figure 2 , 4 As shown, the two ends of the secondary blade 6 are respectively provided with secondary tail fins 61. The two secondary tail fins 61 are arranged opposite to the secondary blade 6, and the secondary tail fins are bent and extended towards the blade shell 1.
[0042] When the secondary blade 6 rotates, the secondary tail fin 61 generates sufficient airflow to carry the cut grass through the secondary grass discharge port 131 into the main blade air duct and then through the main grass discharge port 121 and the through hole 11 into the grass discharge pipe 4.
[0043] like Figure 1 As shown, in order to facilitate the installation of the cutter head, several vertical mounting plates 7 are fixedly connected to the top of the outer side of the cutter head housing 1, and the cutting plate 7 is fixedly connected to the lawn mower.
[0044] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A mid-row rear-collecting grass cutter disc, comprising a cutter disc shell, characterized in that, Several main motors are fixedly connected to the top of the cutter head housing. The main motors are located on the same straight line and are perpendicular to the direction of movement of the cutter head housing. The rotating shaft of the main motor extends into the inner side of the cutter head housing and is fixedly connected to the main blade. A through hole for grass clippings to pass through is provided on the cutter head housing between two adjacent main motors. A grass discharge pipe communicating with the through hole is provided on the top of the cutter head housing. Several grass discharge pipes extend backward and converge to the outlet of the grass discharge pipe. The rotation directions of two adjacent main motors are opposite and they rotate inward relative to each other.
2. The mid-row rear grass collection disc according to claim 1, characterized in that, The inner side of the cutter head housing is provided with a main blade air duct. The main blade air duct includes a main baffle plate fixed to the inner side of the cutter head housing and surrounding the main blade. The main baffle plate is provided with a main grass discharge port communicating with the through hole on the side near the through hole.
3. The mid-row rear grass collection disc according to claim 2, characterized in that, A secondary motor is fixedly connected to the cutter head housing on the rear side of the two adjacent main motors. The rotating shaft of the secondary motor extends into the inner side of the cutter head housing and is fixedly connected to the secondary blade. There is a secondary blade air duct inside the cutter head housing. The secondary blade air duct includes a secondary baffle fixed to the inner side of the cutter head housing and surrounding the secondary blade. A secondary grass discharge port is provided between the secondary baffle and an adjacent main baffle.
4. The mid-row rear grass-collecting disc according to claim 3, characterized in that, The rotation direction of the secondary blade is the same as the rotation direction of the main blade that connects to the secondary grass discharge outlet.
5. The mid-row rear grass-collecting disc according to claim 3, characterized in that, The central axis of the auxiliary motor is located on the bisector of the line connecting the central axes of two adjacent main motors.
6. The mid-row rear grass collection disc according to claim 3, characterized in that, The difference between the distance between two adjacent main motor shafts and the sum of the radii of two adjacent main blades is the gap between the two adjacent main blades, and the diameter of the auxiliary blade is greater than the gap between the two adjacent main blades.
7. The mid-row rear grass collection disc according to claim 1, characterized in that, The main blade is provided with main tail wings at both ends, and the two main tail wings are arranged opposite to the main blade, and the main tail wings are bent and extended toward the blade shell.
8. The mid-row rear grass collection disc according to claim 3, characterized in that, The two ends of the secondary blade are respectively provided with secondary tail wings, and the two secondary tail wings are arranged opposite to the secondary blade, and the secondary tail wings are bent and extended towards the blade shell.
9. The mid-row rear grass collection disc according to claim 1, characterized in that, Several vertical mounting plates are fixedly connected to the top of the outer side of the cutter head housing.