CN111937594A - A lawnmower cutter head lifting device based on a parallel four-bar mechanism - Google Patents

Abstract

The invention discloses a lawnmower cutter head lifting device based on a parallel four-bar mechanism. The end of the rod is hinged with the fixed rod, and the inner rod of the electric push rod is hinged with the rod 1; the two ends of the rod 1 in the horizontal direction are hinged with the rod 2; the corner of the rod 2 is provided with a through hole, which is installed on the frame through the fixing bolt. The other end of the second rod is hinged with the slider; the slider is slidably installed on the guide rail; the guide rail is fixed on the cutter head by bolts; the front and rear of the frame are provided with four vertical through holes for installing the pressure Spring center rod and compression spring. The invention adopts the combination of the compression spring and the parallel four-bar mechanism to adjust the position of the cutter head of the lawn mower, thereby realizing the adjustment of the cutting height, and has the advantages of simple structure, convenient and stable adjustment, neat stubble, etc., and can effectively avoid the collision of the knife and prolong the cutting time. Knife life, reduce missed cutting rate, improve orchard mowing efficiency and mowing quality.

Description

A lawnmower cutter head lifting device based on a parallel four-bar mechanism

technical field

The invention belongs to the technical field of orchard machinery, and in particular relates to a lawnmower cutter head lifting device based on a parallel four-bar mechanism.

Background technique

With the rapid development of the orchard industry in my country, the planting scale of orchards has continued to expand, and the workload of weeding in orchards has also increased. In my country, most of the orchards are planted in hilly and mountainous areas with undulating terrain. Most of the existing weeding methods use general-purpose orchard lawnmowers. Some of these general-purpose lawnmowers have non-adjustable stubble heights and are easy to hit the knife during use; The height of cutting stubble can be adjusted by the vertical distance between them. This adjustment method requires adjustment of multiple support wheels, which is time-consuming and labor-intensive. The adjustment structure is complicated, and there is the problem that the cutter head is not parallel to the ground, which greatly affects the quality of work. Good adaptation to the mountain orchard operating environment.

Therefore, it is necessary to develop a lawn mower cutter head lifting device based on a parallel four-bar mechanism, which can freely adjust the height of the cutting stubble, has a simple structure, is quick and easy to adjust, and at the same time ensures that the remaining stubble is neat, so as to reduce the missed cutting rate and effectively avoid the collision of knives. , Extend the service life of the cutter and improve the quality of orchard mowing.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a lawnmower cutter head lifting device based on a parallel four-bar mechanism. The invention adopts the combination of a parallel four-bar mechanism and a compression spring to adjust the upper and lower positions of the cutter head of the lawn mower, thereby realizing the adjustment of the stubble height. , to improve orchard mowing efficiency and mowing quality.

In order to achieve the above object, the present invention adopts the following technical solutions:

A lawnmower cutter head lifting device based on a parallel four-bar mechanism, comprising a battery box (1), a compression spring central rod (2), a compression spring (3), a fixed rod (4), a connecting piece (5), an electric Push rod (6), rod one (7), rod two (8), fixing bolt (9), frame (10), latch (11), control box (12), cutter head (13), guide rail (14) ), slider (15);

The control box (12) is installed on the front side of the frame (10) for placing control elements; the battery box (1) is installed on the rear side of the frame (10) and used for placing as an electric push rod (6) A battery pack that provides power;

The center rod (2) of the compression spring passes through the through hole of the frame (10), the lower end is mounted on the cutter head (13), and the upper end has a through hole for installing the latch (11); the compression spring (3) Sleeve on the center rod (2) of the compression spring, the lower end is in contact with the frame (10), and the upper end is fixed in position by the latch (11); The two groups are symmetrically distributed on the front side and the rear side of the frame (10); this arrangement can make the lifting process of the cutter head (13) more stable, and avoid jumping during the lifting process of the cutter head (13);

The fixing rod (4) is installed on the left and right sides of the frame (10), and the electric push rod (6) is hinged with the fixing rod (4) at a certain angle through the connecting piece (5); the electric push rod (6) ) of the inner rod is hinged with the rod one (7) through the latch (11); the two ends of the rod one (7) in the horizontal direction are hinged with the rod two (8) through the latch (11); the corner of the rod two (8) There is a through hole at the place, and it is installed on the frame (10) through the fixing bolt (9); the other end of the second rod (8) is hinged with the slider (15), and the two rods (8) are connected at the corners of the point. The hinge point with the two sliders (15) forms a parallelogram; the slider (15) is slidably installed on the guide rail (14); the guide rail (14) is fixed on the cutter head (13) by bolts; the fixing The rod (4), the connecting piece (5), the electric push rod (6), the rod one (7), the rod two (8), the guide rail (14), and the slider (15) are symmetrically distributed around the frame (10). both sides;

The beneficial effects of the present invention are:

Through the above technical solutions, the present invention can well adapt to the complex terrain characteristics of mountain orchards, and uses the electric push rod (6) to drive the movement of the parallel four-bar mechanism, thereby realizing the adjustment of the height of the stubble, the adjustment method is convenient, and the stubble remains neat; A compression spring (3) is provided, which greatly enhances the stability of the lifting process of the cutter head (13) and improves the quality of mowing; in addition, the cutter head lifting device of the lawn mower has the advantages of simple structure and flexible height adjustment.

Description of drawings:

1 is a schematic structural diagram of a lawnmower cutter head lifting device based on a parallel four-bar mechanism of the present invention when the cutter head is adjusted to the lowest position;

2 is a schematic structural diagram of a lawnmower cutter head lifting device based on a parallel four-bar mechanism of the present invention when the cutter head is adjusted to the highest position;

3 is a control flow chart of a lawnmower cutter head lifting device based on a parallel four-bar mechanism of the present invention;

In the figure: 1. Battery box; 2. Compression spring center rod; 3. Compression spring; 4. Fixed rod; 5. Connecting piece; 6. Electric push rod; 7. Rod one; 8. Rod two; ; 10. Rack; 11. Latch; 12. Control box; 13. Cutter; 14. Guide rail; 15. Slider.

Detailed ways:

The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments:

A lawnmower cutter head lifting device based on a parallel four-bar mechanism, comprising a battery box 1, a central rod of a compression spring 2, a compression spring 3, a fixed rod 4, a connecting piece 5, an electric push rod 6, a rod 7, a rod 2 8. Fixing bolt 9, frame 10, latch 11, control box 12, cutter head 13, guide rail 14, slider 15;

The control box 12 is installed on the front side of the rack 10 for placing control elements; the battery box 1 is installed on the rear side of the rack 10 for placing the battery pack that provides power for the electric push rod 6;

The center rod 2 of the compression spring passes through the through hole of the frame 10, the lower end is installed on the cutter head 13, and the upper end has a through hole for installing the pin 11; the compression spring 3 is sleeved on the center rod 2 of the compression spring, and the lower end Contact with the frame 10, and the upper end is fixed in position by the latch 11; the center rod 2 of the compression spring and the compression spring 3 have a total of four groups, and each two groups are symmetrically distributed on the front side and the rear side of the rack 10;

The fixed rod 4 is installed on the left and right sides of the frame 10, and the electric push rod 6 is hinged with the fixed rod 4 at a certain angle through the connecting piece 5; the inner rod of the electric push rod 6 is hinged with the rod one 7 through the latch 11 The two ends of the rod one 7 in the horizontal direction are provided with through holes, which are hinged to the rod two 8 through the latch 11; The other end of the second 8 is hinged with the slider 15, and the connection points at the corners of the two rods 28 and the hinged points of the two sliders 15 form a parallelogram; the slider 15 is slidably installed on the guide rail 14; the guide rail 14 is bolted On the cutter head 13; the fixed rod 4, the connecting piece 5, the electric push rod 6, the rod one 7, the rod two 8, the guide rail 14, and the slider 15 are symmetrically distributed on the left and right sides of the frame 10;

Working principle: When the lawn mower is operating in the orchard, when the operator needs to adjust the height of the cutter head 13 according to the change of the orchard terrain, use the remote control to send the cutter head up and down command to the lawn mower, and control the electric push rods 6 on both sides to extend at the same time. or shrink, so as to drive the rod one 7 to move, so that the rod two 8 rotates around the fixing bolt 9, and drives the slider 15 to slide on the guide rail 14, so as to realize the lifting and lowering of the cutter head 13. The lowest can be adjusted to the position shown in Figure 1, and the highest can be adjusted to In the position shown in Figure 2, the stubble height range is 30~100mm; during the lifting process of the cutter head 13, the lower end of the compression spring 3 is always in contact with the frame 10, and the upper end is in contact with the pin 11, and the elastic force of the compression spring 3 passes through the pin 11 and the center rod of the compression spring 2 acts on the cutter head 13 to ensure the smooth lifting of the cutter head 13 and avoid jumping; at the same time, since the central rod 2 of the compression spring passes through the through hole of the frame 10 and is fixedly connected to the cutter head 13, the fixing bolt 9 passes through the rod 28 The through hole is fixedly connected with the frame 10 to ensure that the cutter head 13 cannot move in the horizontal direction, but can only move up and down in the vertical direction.

The structure and working principle of the present invention are described above with specific embodiments. The present invention is not limited to the above embodiments. According to the above description, any modifications, equivalent replacements and improvements made on the spirit and principles of the present invention, etc. , should be included within the protection scope of the present invention.

Claims (1)

1. The present invention discloses a lawnmower cutter head lifting device based on a parallel four-bar mechanism, which specifically includes: a battery box, a compression spring center rod, a compression spring, a fixed rod, a connector, an electric push rod, rod one, rod two , fixing bolts, racks, latches, control boxes, cutter heads, guide rails, sliders; It is characterized by: The control box is installed on the front side of the rack; the battery box is installed on the rear side of the rack; The center rod of the compression spring passes through the through hole of the frame, the lower end is installed on the cutter head, and the upper end has a through hole for installing the latch; the compression spring is sleeved on the center rod of the compression spring, the lower end is in contact with the frame, and the upper end is in contact with the frame. The position is fixed by the latch; the center rod and the compression spring of the compression spring are in four groups, and each group is symmetrically distributed on the front side and the rear side of the frame; The fixed rod is installed on the left and right sides of the frame, and the electric push rod is hinged with the fixed rod through a connecting piece; the inner rod of the electric push rod is hinged with the rod through a latch; the two ends of the rod in the horizontal direction pass through The latch is hinged with the second rod; the corner of the second rod is provided with a through hole, which is installed on the frame through fixing bolts; the other end of the second rod is hinged with the slider, and the connection point at the corner of the two rods is connected to the two The hinge point of the slider forms a parallelogram; the slider is slidably installed on the guide rail; the guide rail is fixed on the cutter head by bolts; the fixed rod, the connecting piece, the electric push rod, the rod one, the rod two, the guide rail, the slide The blocks are symmetrically distributed on the left and right sides of the rack.

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