Lawn mower

Abstract

The utility model relates to the technical field of mowers, in particular to a lawn mower. The problem that in the prior art, it is difficult for a mowing machine to have the thick plant cutting capacity and the cutting capacity in a lawn with hard objects at the same time is solved, and the practicability of the equipment is improved. The cutting device structurally comprises a mounting base, a rotating base is rotationally connected to the mounting base, the cross section of the rotating base is of a circular structure, and a plurality of mounting structures used for mounting cutting ropes are evenly distributed on the rotating base in the circumferential direction of the center axis of the rotating base; a sliding structure used for enabling the cutting blades to be away from or close to the rotating base is arranged between the rotating base and the cutting blades, and a control structure used for controlling the cutting blades to be away from or close to the rotating base at the same time is further arranged on the rotating base. The lawn mower can be matched with more types of lawns to complete cutting operation, and the application range of the lawn mower is wider.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, and in particular to a lawn mower. Background Art

[0002] A lawn mower is a mechanical device used to trim lawns and vegetation. It is generally divided into rope mowers and blade mowers according to the different cutting methods.

[0003] Among them, blade mowers use rotating blades to cut plants in the grass to achieve the purpose of mowing. Because the blades are in direct contact with the plants, even bushes, plants with tall, dense or hard branches can be cut. However, if there are hard objects such as stones and wires in the lawn, the blades are likely to collide with them during cutting, causing damage to the blades and even damage to the internal connection structure of the machine.

[0004] The rope mower uses a high-speed rotating rope to collide with the plants in the grass, so that the plants are cut off in the middle, thereby achieving the purpose of mowing. Since the rope itself is soft and bendable, when the rope hits a hard object, the rope will bend and deform, which will not affect the normal operation of the machine. However, if there are thick plants in the lawn, the shear force generated by the rotation of the rope will not easily break the plants. Utility Model Content

[0005] The utility model provides a lawn mower, which solves the problem that the lawn mower in the prior art is difficult to simultaneously have the ability to cut thick plants and the ability to cut lawns containing hard objects, thereby improving the practicability of the equipment.

[0006] The technical solution of the utility model is as follows:

[0007] A lawn mower comprises a mounting base,

[0008] A rotating seat is rotatably connected to the mounting seat, and the cross-section of the rotating seat is a circular structure. The rotating seat has a number of mounting structures for installing a cutting rope evenly distributed along the circumference of the central axis of the rotating seat. The rotating seat is also provided with a number of cutting blades. A sliding structure is provided between the rotating seat and the cutting blades for making the cutting blades move away from the rotating seat or close to the rotating seat. The rotating seat is also provided with a control structure for controlling each cutting blade to move away from the rotating seat or close to the rotating seat at the same time. A driving structure is also provided between the mounting seat and the rotating seat for driving the rotating seat to rotate relative to the mounting seat.

[0009] Furthermore, the sliding structure includes a sliding hole arranged on the rotating seat, the cross-section of the sliding hole is a rectangular structure, the sliding hole points to the center of the rotating seat, a connecting piece is fixed at one end of the cutting blade, a sliding cylinder is fixed at the bottom of the connecting piece, the sliding cylinder passes through the sliding hole and is slidingly connected with the sliding hole, a limiting piece is also fixed on the sliding cylinder, and the sliding hole is arranged between the limiting piece and the connecting piece.

[0010] Furthermore, the control structure includes a sliding sleeve, a fixed shaft is fixed at the center of the rotating seat, the sliding sleeve is sleeved on the fixed shaft and slidingly connected with the fixed shaft, a first rotating member and a second rotating member are fixed on the outer wall of the sliding sleeve, a third rotating member and a fourth rotating member are fixed to the connecting member close to the sliding sleeve side, a first connecting rod is provided between the first rotating member and the third rotating member, and two ends of the first connecting rod are respectively rotatably connected to the first rotating member and the third rotating member, a second connecting rod is provided between the second rotating member and the fourth rotating member, and two ends of the second connecting rod are respectively rotatably connected to the second rotating member and the fourth rotating member, and the first connecting rod and the second connecting rod are parallel to each other and have equal lengths.

[0011] Furthermore, the sliding sleeve is fixed with a limiting surface away from the fixed shaft end, a telescopic member is arranged in the sliding sleeve, the fixed end of the telescopic member is fixedly connected to the limiting surface, and the telescopic end of the telescopic member is fixedly connected to the fixed shaft.

[0012] Furthermore, the mounting structure includes a first limit plate and a second limit plate, both of which are arc-shaped structures, the central axes of the circular rotating seats of the first limit plate and the second limit plate coincide, and a first connecting tube and a second connecting tube are connected between the first limit plate and the second limit plate.

[0013] Furthermore, the driving structure includes a driving motor, which is fixedly connected to a mounting seat, the mounting seat is a cylindrical structure, a rotating groove is provided in the mounting seat, the rotating seat is rotatably connected to the rotating groove, and the output shaft of the driving motor is fixedly connected to the limiting surface.

[0014] Furthermore, the cutting blade includes a connecting portion and a cutting portion fixedly connected to the connecting portion, the connecting portion and the connecting piece are fixed by threaded connection, the cutting portion is parallel to the rotating seat, the cutting portion is an isosceles triangle structure, and cutting blades are provided on both sides of the cutting portion.

[0015] The working principle and beneficial effects of the utility model are:

[0016] The working process of this embodiment is as follows: when it is necessary to cut a lawn containing thick plants, the telescopic member is first retracted to make the sliding sleeve descend, the cutting blade slides in the direction away from the rotating seat, and then the driving motor is started to drive the rotating seat to rotate to complete the cutting operation of the lawn; when it is necessary to cut a soft lawn containing hard objects, the telescopic member is first extended to make the sliding sleeve move up, the cutting blade slides in the direction of the rotating seat, and then the cutting rope is knotted, and the two ends are passed through the first connecting tube and the second connecting tube, and then the driving motor is started to cut the lawn by rotating the cutting rope; when there are both hard objects and thick plants in the lawn, the telescopic member is first retracted to make the sliding sleeve descend, and the cutting is artificially slid in the direction away from the rotating seat, and then the cutting rope is knotted and passed through the first connecting tube and the second connecting tube at the same time. When cutting, move slowly first, cut the soft plants with the cutting rope, and knock the hard objects away. If thick plants are encountered, continue to approach and cut the plants with the cutting blade.

[0017] The utility model provides a mounting structure and a cutting blade on a rotating seat, and provides a sliding structure and a control structure between the cutting blade and the rotating seat. The utility model can not only retract the cutting blade into the rotating seat when cutting soft lawns with hard objects, use a cutting rope to cut the lawn, and prevent machine damage by using the flexible cutting of the cutting rope, but also retract the cutting rope and extend the cutting blade when cutting lawns with thick plants, and use the cutting blade to cut the thick plants.

[0018] The utility model can be adapted to more types of lawns to complete cutting operations, and the utility model has a wider application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a structural schematic diagram of the prior art of this embodiment;

[0021] Figure 2 The overall structure of this embodiment is shown in FIG. Figure 1 ;

[0022] Figure 3 The overall structure of this embodiment is shown in FIG. Figure 2 ;

[0023] Figure 4 is a schematic diagram of the internal structure of the sliding sleeve in this embodiment;

[0024] Figure 5 It is a structural schematic diagram of the sliding structure in this embodiment.

[0025] In the figure:

[0026] 1. Mounting seat; 11. Rotating groove; 2. Rotating seat; 21. Sliding hole; 22. Fixed shaft; 3. Driving motor; 41. First limiting plate; 42. Second limiting plate; 43. First connecting tube; 44. Second connecting tube; 5. Sliding sleeve; 51. First rotating member; 52. Second rotating member; 53. Limiting surface; 6. Connecting member; 61. Cutting blade; 611. Cutting part; 612. Connecting part; 62. Third rotating member; 63. Fourth rotating member; 64. Sliding cylinder; 65. Limiting member; 71. First connecting rod; 72. Second connecting rod; 8. Telescopic member. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 2 to Figure 5 As shown, this embodiment proposes a lawn mower, and its structure includes a mounting seat 1. Among them, the rotating seat 2 in this embodiment is rotatably set on the mounting seat 1, and the cross-section of the rotating seat 2 is a circular structure. The mounting structure is arranged on the rotating seat 2, and it has a plurality of evenly distributed circumferentially along the central axis of the rotating seat 2 for installing the cutting rope. A plurality of cutting blades 61 are arranged on the rotating seat 2. A sliding structure is arranged between the rotating seat 2 and the cutting blade 61, and is used to make the cutting blade 61 away from the rotating seat 2 or close to the rotating seat 2. A control structure is arranged on the rotating seat 2, and is used to control each cutting blade 61 to be away from the rotating seat 2 or close to the rotating seat 2 at the same time. A driving structure is arranged between the mounting seat 1 and the rotating seat 2, and is used to drive the rotating seat 2 to rotate relative to the mounting seat 1. The utility model can be provided with a connecting structure connected to the mounting seat 1 on the mounting seat 1, so as to facilitate the movement of the lawn mower.

[0029] The sliding structure in this embodiment includes a sliding hole 21, which is arranged on the rotating seat 2. The cross section of the sliding hole 21 is a rectangular structure, and the sliding hole 21 points to the center of the rotating seat 2. A connecting member 6 is fixed at one end of the cutting blade 61, and a sliding cylinder 64 is fixed at the bottom of the connecting member 6. The sliding cylinder 64 passes through the sliding hole 21 and is slidingly connected with the sliding hole 21. The limiter 65 is fixed on the sliding cylinder 64, and the sliding hole 21 is arranged between the limiter 65 and the connecting member 6. The cutting blade 61 in this embodiment can extend out of the rotating seat 2 to cut the lawn, and can also be retracted into the rotating seat 2, so as to reduce the wear of the tool when cutting with a cutting rope.

[0030] The cutting blade 61 in this embodiment includes a connecting portion 612 and a cutting portion 611. The cutting portion 611 is fixedly connected to the connecting portion 612. The connecting portion 612 is fixed to the connecting member 6 by threaded connection, the cutting portion 611 is parallel to the rotating seat 2, the cutting portion 611 is an isosceles triangle structure, and the cutting blades are arranged on both sides of the cutting portion 611. With such a design, even if the cutting blade encounters a hard object, the cutting portion 611 can first contact the hard object. In this way, since the telescopic member 8 is composed of a hydraulic cylinder or a pneumatic cylinder, there is a certain buffering force, and the blade can be put into the rotating seat 2 in time to avoid damage.

[0031] The control structure in this embodiment includes a sliding sleeve 5, a fixed shaft 22 is fixedly arranged at the center of the rotating seat 2, the sliding sleeve 5 is sleeved on the fixed shaft 22 and is slidably connected with the fixed shaft 22, a first rotating member 51 and a second rotating member 52 are fixed on the outer wall of the sliding sleeve 5, a third rotating member 62 and a fourth rotating member 63 are fixed on the connecting member 6 close to the sliding sleeve 5, a first connecting rod 71 is arranged between the first rotating member 51 and the third rotating member 62, and the two ends of the first connecting rod 71 are respectively rotatably connected with the first rotating member 51 and the third rotating member 62, a second connecting rod 72 is arranged between the second rotating member 52 and the fourth rotating member 63, and the two ends of the second connecting rod 72 are respectively rotatably connected with the second rotating member 52 and the fourth rotating member 63, and the first connecting rod 71 and the second connecting rod 72 are parallel to each other and have the same length. Such a design enables the connecting member 6 to slide horizontally relative to the sliding hole 21 when the sliding sleeve 5 slides relative to the fixed shaft 22, and the force is more uniform, thereby reducing the phenomenon of offset jamming during sliding.

[0032] The installation structure in this embodiment includes a first limit plate 41 and a second limit plate 42, both of which are arc-shaped structures. The central axis of the circular rotating seat 2 of the first limit plate 41 and the second limit plate 42 coincides, and the first connecting tube 43 and the second connecting tube 44 are arranged between the first limit plate 41 and the second limit plate 42. This design is to facilitate the installation of the cutting rope. When installing the cutting rope, a limit knot can be tied in the center first, and then both ends of the cutting rope can be passed through the first connecting tube 43 and the second connecting rod 72 at the same time, so that the cutting rope will not slip out under the action of centrifugal force when the rotating seat 2 rotates.

[0033] The limiting surface 53 in this embodiment is fixedly arranged at the end of the sliding sleeve 5 away from the fixed shaft 22, and the telescopic member 8 is arranged in the sliding sleeve 5. The fixed end of the telescopic member 8 is fixedly connected to the limiting surface 53, and the telescopic end of the telescopic member 8 is fixedly connected to the fixed shaft 22. The telescopic member 8 in this embodiment is preferably a hydraulic cylinder or a pneumatic cylinder. Among them, the hydraulic cylinder or the cylinder are both prior arts, and will not be described in detail in this embodiment. This embodiment controls the blade to be extended or retracted from the rotating seat 2 by the telescopic member 8, and can keep the position fixed after achieving the two states. Even when the cutting blade 61 encounters a hard object, the buffering effect of the hydraulic cylinder or the cylinder itself can be utilized to retract the cutting blade 61 to reduce damage to the blade.

[0034] The driving structure in this embodiment includes a driving motor 3, which is fixedly connected to the mounting seat 1. The mounting seat 1 is a cylindrical structure, the rotation groove 11 is arranged in the mounting seat 1, the rotating seat 2 is rotationally connected to the rotation groove 11, and the output shaft of the driving motor 3 is fixedly connected to the limiting surface 53. Such a design can use the driving motor 3 to realize the rotation of the rotating seat 2, thereby ensuring the realization of the cutting function.

[0035] The working process of this embodiment is as follows: when it is necessary to cut a lawn containing thick plants, the telescopic member 8 is first retracted to make the sliding sleeve 5 descend, and the cutting blade slides in the direction away from the rotating seat 2, and then the driving motor 3 is started to drive the rotating seat 2 to rotate and complete the cutting operation of the lawn; when it is necessary to cut a lawn containing hard objects, the telescopic member 8 is first extended to make the sliding sleeve 5 move up, and the cutting blade slides in the direction of the rotating seat 2, and then the cutting rope is knotted and the two ends are passed through the first connecting tube 43 and the second connecting tube 44, and then the driving motor 3 is started to cut the lawn by rotating the cutting rope; when there are both hard objects and thick plants in the lawn, the telescopic member 8 is first retracted to make the sliding sleeve 5 descend, and the cutting is artificially slid in the direction away from the rotating seat 2, and then the cutting rope is knotted and passed through the first connecting tube 43 and the second connecting tube 44 at the same time, and when cutting, the soft plants are cut by the cutting rope and the hard objects are knocked away, and if thick plants are encountered, the cutting rope is continued to approach and the plants are cut by the cutting blade 61.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lawn mower, comprising a mounting base (1), characterized in that: The mounting seat (1) is rotatably connected to a rotating seat (2), the cross section of the rotating seat (2) being a circular structure, the rotating seat (2) being evenly distributed with a plurality of mounting structures for mounting a cutting rope along the circumference of the central axis of the rotating seat (2), the rotating seat (2) being also provided with a plurality of cutting blades (61), a sliding structure for moving the cutting blades (61) away from the rotating seat (2) or close to the rotating seat (2) being provided between the rotating seat (2) and the cutting blades (61), a control structure for controlling each cutting blade (61) to move away from the rotating seat (2) or close to the rotating seat (2) at the same time being provided on the rotating seat (2), and a driving structure for driving the rotating seat (2) to rotate relative to the mounting seat (1) being provided between the mounting seat (1) and the rotating seat (2).

2. A lawn mower according to claim 1, characterized in that: The sliding structure comprises a sliding hole (21) arranged on the rotating seat (2), the cross section of the sliding hole (21) is a rectangular structure, the sliding hole (21) points to the center of the rotating seat (2), a connecting piece (6) is fixed at one end of the cutting blade (61), a sliding cylinder (64) is fixed at the bottom of the connecting piece (6), the sliding cylinder (64) passes through the sliding hole (21) and is slidingly connected to the sliding hole (21), a limiting piece (65) is also fixed on the sliding cylinder (64), and the sliding hole (21) is arranged between the limiting piece (65) and the connecting piece (6).

3. A lawn mower according to claim 2, characterized in that: The control structure comprises a sliding sleeve (5), a fixed shaft (22) is fixed at the center of the rotating seat (2), the sliding sleeve (5) is sleeved on the fixed shaft (22) and is slidably connected to the fixed shaft (22), a first rotating member (51) and a second rotating member (52) are fixed on the outer wall of the sliding sleeve (5), a third rotating member (62) and a fourth rotating member (63) are fixed on the side of the connecting member (6) close to the sliding sleeve (5), and the first rotating member (51) and the third rotating member (52) are fixed to the outer wall of the sliding sleeve (5). A first connecting rod (71) is provided between the first rotating member (51) and the third rotating member (62), and two ends of the first connecting rod (71) are respectively rotatably connected to the first rotating member (51) and the third rotating member (62). A second connecting rod (72) is provided between the second rotating member (52) and the fourth rotating member (63), and two ends of the second connecting rod (72) are respectively rotatably connected to the second rotating member (52) and the fourth rotating member (63). The first connecting rod (71) and the second connecting rod (72) are parallel to each other and have the same length.

4. A lawn mower according to claim 3, characterized in that: The sliding sleeve (5) is fixed with a limiting surface (53) at the end away from the fixed shaft (22), and a telescopic member (8) is provided inside the sliding sleeve (5), the fixed end of the telescopic member (8) is fixedly connected to the limiting surface (53), and the telescopic end of the telescopic member (8) is fixedly connected to the fixed shaft (22).

5. A lawn mower according to claim 3, characterized in that: The mounting structure comprises a first limiting plate (41) and a second limiting plate (42); the first limiting plate (41) and the second limiting plate (42) are both arc-shaped structures; the central axes of the circular rotating seats (2) of the first limiting plate (41) and the second limiting plate (42) coincide with each other; and a first connecting tube (43) and a second connecting tube (44) are connected between the first limiting plate (41) and the second limiting plate (42).

6. A lawn mower according to claim 4, characterized in that: The driving structure comprises a driving motor (3), the driving motor (3) is fixedly connected to a mounting seat (1), the mounting seat (1) is a cylindrical structure, a rotating groove (11) is provided in the mounting seat (1), the rotating seat (2) is rotatably connected to the rotating groove (11), and the output shaft of the driving motor (3) is fixedly connected to a limiting surface (53).

7. A lawn mower according to claim 2, characterized in that: The cutting blade (61) comprises a connecting portion (612) and a cutting portion (611) fixedly connected to the connecting portion (612); the connecting portion (612) is fixed to the connecting piece (6) by means of a threaded connection; the cutting portion (611) is parallel to the rotating seat (2); the cutting portion (611) is an isosceles triangle structure; and cutting blades are provided on both sides of the cutting portion (611).

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