WO2025065401A1 - Bedknife adjustment structure and lawn mowing robot - Google Patents

Abstract

The present application provides a bedknife adjustment structure and a lawn mowing robot. The bedknife adjustment structure comprises: two oppositely disposed side shells; a bedknife bracket, located between the two oppositely disposed side shells and connected to the side shells; a bedknife blade, located between the two oppositely disposed side shells and connected to the bedknife bracket; a pressure block and a fastener, the fastener being used to affix the pressure block on the side shells, the pressure block and the side shells forming a through hole facing the bedknife bracket, the aperture of the through hole being adjustable by means of the fastener; and an eccentric member, comprising a first sub-shaft and a second sub-shaft, the diameter of the second sub-shaft being smaller than the diameter of the first sub-shaft, the first sub-shaft being located in the through hole, a connecting hole being provided in the bottom cutter bracket, the second sub-shaft being disposed in the connecting hole and matching with a bedknife bracket gap, the eccentricity of the second sub-shaft relative to the first sub-shaft being greater than a gap between the first sub-shaft and the bedknife bracket. When the eccentric rotates and the side shells remain stationary, the second sub-shaft rotates around a center axis of the first sub-shaft, thereby adjusting the bedknife blade by means of a simple structure.

Description

Bed knife adjustment structure and mowing robot Technical Field

The present application relates to the technical field of lawn mowing robots, and in particular to a bed knife adjustment structure and a lawn mowing robot.

Background Art

A reel mowing robot usually needs to align the reel and the bed knife so that there is an appropriate distance between the reel and the bed knife for mowing the lawn. However, the current alignment operation is completed by adjusting the reel or the bed knife. However, either the position of the bed knife or the reel will shift when locked after adjustment, or the adjustment structure is complicated.

Summary of the invention

To this end, the present application provides a bed knife adjustment structure and a lawn mowing robot to solve the above-mentioned technical problems.

The first aspect of the present application provides a bed knife adjustment structure, which includes: two side shells arranged opposite to each other; a bed knife bracket, which is located between the two side shells arranged opposite to each other and connected to the side shells; a bed knife blade, which is located between the two side shells arranged opposite to each other and connected to the bed knife bracket; a pressure block and a fastener, the fastener is used to fix the pressure block on the side shells, the pressure block and the side shells form a through hole facing the bed knife bracket, and the aperture of the through hole can be adjusted by the fastener; an eccentric member, including a first sub-axis and a second sub-axis, the diameter of the second sub-axis is smaller than the diameter of the first sub-axis, the first sub-axis is located in the through hole, a connecting hole is provided in the bed knife bracket, the second sub-axis is arranged in the connecting hole, and is gap-matched with the bed knife bracket, and the eccentricity of the second sub-axis relative to the first sub-axis is greater than the gap between the second sub-axis and the bed knife bracket.

A second aspect of the present application provides a lawn mowing robot, which includes a bed knife adjustment structure, a roller and a roller blade. The bed knife adjustment structure is the aforementioned bed knife adjustment structure, the roller is connected to the two side shells arranged oppositely and can rotate relative to the side shells, the roller blade is arranged on the roller, and when the roller blade and the bed knife blade form a shearing structure, the blade edge of the roller blade is opposite to the blade edge of the bed knife blade.

In the present application, since the bed knife adjustment structure includes two relatively side shells, a bed knife blade, a pressure block, a fastener and an eccentric member, the eccentric member includes a first sub-axis and a second sub-axis, the diameter of the second sub-axis is smaller than the diameter of the first sub-axis, the second sub-axis is arranged in the connecting hole of the bed knife bracket and is clearance-matched with the bed knife bracket, the first sub-axis is located in the through hole, and the aperture of the through hole formed by the pressure block and the side shell can be adjusted by the fastener, the bed knife blade is located between the two relatively side shells and connected to the bed knife bracket, and the bed knife bracket is located between the two relatively side shells and connected to the side shell, therefore, when the aperture of the through hole is adjusted When the preset aperture is matched with the clearance of the first sub-axis, and the eccentric member is rotated and the side shell is stationary, the second sub-axis will rotate around the central axis of the first sub-axis. Since the eccentricity of the second sub-axis relative to the first sub-axis is greater than the clearance between the second sub-axis and the bed knife bracket, the bed knife bracket will rotate relative to the side shell, and the bed knife blade will rotate with the rotation of the bed knife bracket, so that the bed knife blade can be adjusted to a suitable position to be parallel to the roller blade in the mowing robot (it can also be understood that the bed knife blade is parallel to the roller shaft), and at the same time, a suitable clearance is formed with the roller blade in the mowing robot to facilitate mowing the lawn. After the adjustment is completed, the aperture of the through hole formed by the pressure block and the side shell is reduced by the fastener to clamp the first sub-axis, so that locking can be achieved without causing the bed knife blade to deviate.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the implementation manner will be briefly introduced below. Obviously, the drawings described below are some implementation manners of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic diagram of the three-dimensional structure of a lawn mowing robot provided in some embodiments of the present application;

FIG2 is a cross-sectional schematic diagram of a lawn mowing robot provided in some embodiments of the present application;

FIG. 3 is a partial enlarged schematic diagram of portion A in FIG. 1 .

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

In the description of this application, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components; it can be a communication connection; it can be an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Please refer to Figures 1 and 2. Figure 1 is a schematic diagram of the three-dimensional structure of a lawn mower robot provided in some embodiments of the present application; Figure 2 is a schematic diagram of the cross-section of a lawn mower robot provided in some embodiments of the present application.

As shown in Figures 1 and 2, in some embodiments, the lawn mowing robot 1 includes a bed knife adjustment structure 100, a roller 101 and a roller blade 102. The bed knife adjustment structure 100 includes a bed knife blade 12, and the bed knife blade 12 is located between two side shells 10 that are oppositely arranged. The roller 101 is connected to the two side shells 10 that are oppositely arranged and can rotate relative to the side shells. The roller blade 102 is arranged on the roller 101. When the roller blade 102 forms a shearing structure with the bed knife blade 12, the blade edge of the roller blade 102 is opposite to the blade edge of the bed knife blade 12.

In some embodiments, the hob blade 102 extends spirally on the roller 101, the bottom knife blade 12 is a straight knife blade, and the bottom knife blade 12 is rectangular.

As shown in FIG. 1 and FIG. 2 , in some embodiments, the bed knife adjustment structure 100 includes two side shells 10 that are arranged oppositely, a bed knife bracket 11, a bed knife blade 12, a pressure block 13, a fastener 14, and an eccentric member 15. The bed knife bracket 11 is located between the two side shells 10 that are arranged oppositely and connected to the two side shells 10 that are arranged oppositely. The bed knife blade 12 is located between the two side shells 10 that are arranged oppositely and connected to the bed knife bracket 11. The fastener 14 is used to fix the pressure block 13 on the side shell, and the pressure block 13 and the side shell form a through hole 110 facing the bed knife bracket 11, and the aperture of the through hole 110 can be adjusted by the fastener 14. The eccentric member 15 includes a first sub-shaft 151 and a second sub-shaft 152. The diameter of the second sub-shaft 152 is smaller than the diameter of the first sub-shaft 151. The first sub-shaft 151 is located in the through hole 110. A connecting hole 120 is provided in the bottom knife bracket 11. The second sub-shaft 152 is provided in the connecting hole 120 and is loosely matched with the bottom knife bracket 11. The eccentricity of the second sub-shaft 152 relative to the first sub-shaft 151 is greater than the gap between the second sub-shaft 152 and the bottom knife bracket 11.

In the present application, since the bed knife adjustment structure 100 includes two relatively arranged side shells 10, a bed knife bracket 11, a bed knife blade 12, a pressure block 13, a fastener 14 and an eccentric member 15, the eccentric member 15 includes a first sub-axis 151 and a second sub-axis 152, the diameter of the second sub-axis 152 is smaller than the diameter of the first sub-axis 151, the second sub-axis 152 is arranged in the connecting hole 120 of the bed knife bracket 11, and is clearance-matched with the bed knife bracket 11, the first sub-axis 151 is located in the through hole 110, and the aperture of the through hole 110 formed by the pressure block 13 and the side shell can be adjusted by the fastener 14, the bed knife blade 12 is located between the relatively arranged two side shells 10 and connected to the bed knife bracket 11, the bed knife bracket The frame 11 is located between the two side shells 10 that are arranged oppositely and is connected to the side shells. Therefore, when the aperture of the through hole 110 is adjusted to a preset aperture and a clearance match with the first sub-axis 151, and the eccentric member 15 is rotated while the side shells are stationary, the second sub-axis 152 will rotate around the central axis of the first sub-axis 151. Since the eccentricity of the second sub-axis 152 relative to the first sub-axis 151 is greater than the clearance between the second sub-axis 152 and the bottom knife bracket 11, the bottom knife bracket 11 will rotate relative to the side shells, and the bottom knife blade 12 will rotate with the rotation of the bottom knife bracket 11, so that the bottom knife blade 12 can be adjusted to a suitable position to be parallel to the reel blade 102 in the lawn mower robot 1 (it can also be understood that the bottom knife blade 12 is parallel to the roller 101), and at the same time, a suitable clearance is formed with the reel blade 102 in the lawn mower robot 1 to facilitate lawn mowing. After the adjustment is completed, the aperture of the through hole 110 formed by the pressing block 13 and the side shell is reduced by the fastener 14 to clamp the first sub-axis 151, so that locking can be achieved without causing the bottom knife blade 12 to deviate.

Please refer to FIG. 1 to FIG. 3 , FIG. 3 is a partial enlarged schematic diagram of portion A in FIG. 1 .

As shown in FIG. 2 , the two side shells 10 disposed oppositely refer to the first side shell 10a and the second side shell 10b disposed oppositely. As shown in FIG. 1 , the pressing block 13 includes a first pressing block 13a and a second pressing block 13b. The first pressing block 13a and the first side shell 10a form a first through hole 110a facing the bottom knife bracket 11. As shown in FIG. 1 and FIG. 2 , the second pressing block 13b and the second side shell 10b form a second through hole 110b facing the bottom knife bracket 11. The two ends of the bottom knife bracket 11 are respectively provided with first connecting holes 110a and 110b. 20a and the second connecting hole 120b, the eccentric member 15 includes a first eccentric member 15a and a second eccentric member 15b, the first eccentric member 15a is located in the first through hole 110a and the first connecting hole 120a, and the second eccentric member 15b is located in the second through hole 110b and the second connecting hole 120b. It should be noted that the first eccentric member 15a includes the first sub-axis 151 and the second sub-axis 152, and the second eccentric member 15b also includes the first sub-axis 151 and the second sub-axis 152. Thus, the first eccentric member 15a and/or the second eccentric member 15b can be rotated to adjust the position of the bed knife blade 12, so that there is a suitable gap between the bed knife blade 12 and the roller blade 102 for mowing the lawn. It should be noted that only one side of the bed knife blade 12 can be adjusted, or both sides can be adjusted, and when only one side of the bed knife blade 12 is adjusted, the other side can be left unchanged, so the adjustment is more convenient.

The first connection hole 120a and the second connection hole 120b may both be blind holes.

During assembly, the second sub-shaft 152 of the eccentric member 15 can be first inserted into the connecting hole 120 of the bottom knife bracket 11, and then the pressing block 13 and the side shell are connected by the fastener 14, and the aperture of the through hole 110 formed by the pressing block 13 and the side shell is adjusted by the fastener 14, so that the eccentric member 15 can rotate relative to the through hole 110, or cannot rotate relative to the through hole 110.

In some embodiments, an I-shaped groove 153 is provided at one end of the first sub-axis 151 of the eccentric member 15 away from the second sub-axis 152 , so that a flat-blade screwdriver can be inserted into the I-shaped groove 153 to rotate the eccentric member 15 .

In some embodiments, the fitting tolerance between the second sub-axis 152 and the connecting hole 120 is H7/g6. In some embodiments, when the gap between the bed knife blade 12 and the hob blade 102 is adjusted by adjusting the bed knife blade 12, the aperture of the through hole 110 formed by the pressing block 13 and the side shell can be adjusted by the fastener 14, so that the fitting tolerance between the first sub-axis 151 and the through hole 110 is H7/g6.

In some other embodiments, the matching tolerance between the second sub-shaft 152 and the connecting hole 120 can also be other tolerance grades, and it is only necessary to ensure that the eccentricity of the second sub-shaft 152 relative to the first sub-shaft 151 is greater than the gap between the second sub-shaft 152 and the bottom knife bracket 11. By adjusting the aperture of the through hole 110 formed by the pressing block 13 and the side shell through the fastener 14, the matching tolerance between the first sub-shaft 151 and the through hole 110 can also be other tolerance grades, and it is only necessary to ensure that the first sub-shaft 151 can rotate relative to the through hole 110, and the through hole 110 can play a role. It is sufficient to limit the rotation space of the first sub-axis 151.

In some embodiments, the eccentricity of the second sub-axis 152 relative to the first sub-axis 151 is between 0.1 and 0.3 mm. The gap between the second sub-axis 152 and the bottom knife bracket 11 is less than 1 mm. This size is more compatible with the bottom knife bracket 11.

In some embodiments, the fastener 14 includes a fastening screw, and the fastener 14 includes a first fastener 14a and a second fastener 14b, and the first fastener 14a and the second fastener 14b are respectively located on both sides of the eccentric member 15. The pressing block 13 and the side shell are connected by the fastener 14, and the aperture of the through hole 110 formed by the pressing block 13 and the side shell can be adjusted by loosening or tightening the fastener 14, which has a simple structure and is more convenient to adjust.

The pressing block 13 is in a cubic shape, and a first arc-shaped groove is provided on a side of the pressing block 13 facing the side shell. Correspondingly, a second arc-shaped groove is provided on a side of the side shell facing the pressing block 13. When the fastener 14 connects the pressing block 13 and the side shell, the pressing block 13 abuts against the side shell, so that the first arc-shaped groove and the second arc-shaped groove are combined to form the through hole 110 facing the bottom knife bracket 11.

In other embodiments, the fastener 14 may also be other structures, as long as it can connect the pressing block and the side shell and can adjust the aperture of the through hole through the fastener 14 .

In some embodiments, as shown in FIG. 1 and FIG. 3 , the bed knife adjustment structure 100 further includes a gasket 16, which is sleeved on the second sub-shaft 152 and is located between the first sub-shaft 151 and the bed knife bracket 11. The gasket 16 can reduce the friction between the first sub-shaft 151 and the bed knife bracket 11, so that it is more labor-saving when the eccentric member 15 is rotated, and the wear between the eccentric member 15 and the bed knife bracket 11 is smaller.

The above is an implementation method of the embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the embodiment of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims (6)

A bed knife adjustment structure, characterized in that the bed knife adjustment structure comprises: Two side shells arranged opposite to each other; A bottom knife support is located between the two side shells arranged opposite to each other and connected to the side shells; A bed knife blade is located between the two oppositely disposed side shells and connected to the bed knife bracket; A pressing block and a fastener, wherein the fastener is used to connect the pressing block and the side shell, the pressing block and the side shell form a through hole facing the bottom knife bracket, and the aperture of the through hole can be adjusted by the fastener; The eccentric piece includes a first sub-shaft and a second sub-shaft, the diameter of the second sub-shaft is smaller than the diameter of the first sub-shaft, the first sub-shaft is located in the through hole, a connecting hole is provided in the bottom knife bracket, the second sub-shaft is arranged in the connecting hole and is gap-matched with the bottom knife bracket, and the eccentricity of the second sub-shaft relative to the first sub-shaft is greater than the gap between the second sub-shaft and the bottom knife bracket. The bottom knife adjustment structure according to claim 1 is characterized in that the fitting tolerance between the second sub-shaft and the connecting hole is H7/g6. The bed knife adjustment structure according to claim 1 is characterized in that the eccentricity of the second sub-axis relative to the first sub-axis is between 0.1 and 0.3 mm. The bed knife adjustment structure according to claim 1 is characterized in that the bed knife adjustment structure also includes a gasket, the gasket is sleeved on the second sub-shaft, and the gasket is located between the first sub-shaft and the bed knife bracket. The bottom knife adjustment structure according to claim 1 is characterized in that the fastener comprises a fastening screw, the fastener comprises a first fastener and a second fastener, and the first fastener and the second fastener are respectively located on both sides of the eccentric member. A lawn mowing robot, characterized in that the lawn mowing robot comprises a bed knife adjustment structure, a roller and a roller blade, the bed knife adjustment structure is the bed knife adjustment structure according to any one of claims 1 to 5, the roller is connected to the two side shells arranged oppositely and can rotate relative to the side shells, the roller blade is arranged on the roller, and when the roller blade forms a shearing structure with the bed knife blade, the blade edge of the roller blade is opposite to the blade edge of the bed knife blade.