CN206227012U - A kind of blade articulated mower cutterhead - Google Patents

Abstract

The utility model provides a blade articulated lawn mower cutter head, which belongs to the technical field of garden equipment. It solves the problem of potential safety hazards in the existing cutter heads. The blade articulated lawn mower cutter head includes two circular disc bodies, the two disc bodies are parallel and fixedly connected, and there is a storage gap between the sides of the two disc bodies, and a number of arc-shaped strips are hinged in the storage gap. Blades, several blades are distributed in the circumferential direction and located at the edge of the disc body. When the blades swing to the outside of the storage gap, the free ends of the blades protrude from the storage gap. extension spring. This blade articulated lawn mower deck automatically hides the blade when not in use for added safety.

Description

Blade articulated lawnmower cutter head

technical field

The utility model belongs to the technical field of garden equipment, and relates to a blade hinged lawnmower cutter head.

Background technique

Lawn mowers are also known as weeders, lawnmowers, lawn trimmers, etc. A lawn mower is a mechanical tool for mowing lawns, vegetation, etc. It is composed of a cutter head, an engine, a walking wheel, a walking mechanism, a blade, a handrail, and a control part. The cutterhead is installed on the walking wheel, the cutterhead is equipped with an engine, and the output shaft of the engine is equipped with a blade. The blade uses the high-speed rotation of the engine to increase the speed a lot, which saves the working time of the weeding workers and reduces a lot of human resources. Currently The cutter head still adopts a metal disc, and the blades are arranged circumferentially on the edge of the metal disc. Since the blades are always exposed, it is easy to scratch people when not in use or when the blades are transported or stored, posing a safety hazard.

Contents of the invention

The purpose of the utility model is to solve the above-mentioned problems in the existing technology, and propose a blade articulated lawn mower cutter head. The blade articulated lawn mower cutter head can automatically hide the blade when not in use, which is safer.

The purpose of this utility model can be achieved through the following technical solutions: a blade articulated lawn mower cutter head, which is characterized in that it includes two circular disc bodies, the two disc bodies are parallel and fixedly connected, and the two discs There is a storage gap between the sides of the body, and a number of arc-shaped blades are hinged in the storage gap. The long edges of the arc-shaped protruding blades are cutting edges. At the edge, when the blade swings to the outside of the storage gap, the free end of the blade can extend out of the storage gap, and a return tension spring is connected between the disc body and the blade to make the blade swing into the storage gap.

When not in use, the blade is hidden in the storage gap. At this time, the cutting edge of the blade is facing outward. When in use, the two discs rotate at a high speed driven by the motor, and the blade is subjected to centrifugal force. When the centrifugal force is greater than the tension of the return spring, the blade can overcome The tension of the reset tension spring swings to the outside of the storage gap, that is, the blade can extend out of the storage gap to mow the grass. When the disc body stops rotating, the tension of the reset tension spring can pull the blade back into the storage gap, that is, the blade is hidden, which is more secure .

In the blade articulated lawn mower cutter head described above, the outer edge of the inner side of the disc has an annular flange along the circumference, and a gap is opened in the upper circumference of the flange, and the flanges of the two discs are against each other. , and the gaps on the two flanges correspond one-to-one, when the blade swings to the outside, the gap can be stretched out, and the arc-shaped concave long edge of the blade can abut against the edge of the gap. The flanging can cover the storage gap to prevent foreign matter from entering the storage gap. The notch is used for the blade to swing out of the storage gap, and at the same time, the edge of the notch can limit the position of the blade after the blade swings in place.

In the blade articulated lawnmower cutterhead described above, a plurality of through holes are opened on the side of the free end of the blade along the length direction, and counterweights are inserted and fixed in the through holes. The counterweight is located at the free end of the blade, so that the free end of the blade can generate greater centrifugal force, ensuring that the blade can also swing out of the storage gap at a lower rotational speed of the disc body.

In the blade articulated lawn mower disc described above, the inner end of the blade has a sheet-shaped connecting portion, and the connecting portion is hinged between the two discs through a pin shaft, and the return tension spring is connected to the connecting portion superior. Make the blade connection more stable.

In the blade articulated lawn mower cutter head described above, there are several connecting columns vertically on the side of one of the discs, and the connecting columns are distributed in the circumferential direction. One end of the return tension spring is fixedly connected to the connecting column, and the other end Fixedly connected to the connecting portion, the disc body is fixedly connected to a limit block at the inner side of the blade, and can abut against the limit block when the blade swings into the storage gap. When the cutter head stops rotating, the blade swings into the storage gap and leans against the limit block, so as to prevent the blade from excessively extending into the storage gap.

In the blade head of the articulated lawnmower mentioned above, the limiting block is made of polyurethane material. Under the action of the return spring, the blade swings at a certain speed, and the blade will collide with the limit block, and the limit block of polyurethane material can avoid damage to the blade.

In the blade articulated lawn mower cutter head described above, a number of connecting holes are opened on the side of the disc body in the upper direction, and screw holes are opened on the connecting column of the other disc body, and the connecting holes are pierced with Screws, and the screws are screwed into the screw holes of the connecting column. The two disk bodies are fixedly connected by screws, which makes disassembly and blade replacement more convenient.

Compared with the prior art, this blade articulated lawn mower cutter head has the following advantages:

1. When the disk body stops rotating, the tension of the return spring can pull the blade back into the storage gap, that is, the blade is hidden, which is safer.

2. Since the two discs rotate at high speed driven by the motor during use, the blade is subjected to centrifugal force. When the centrifugal force is greater than the tension of the return tension spring, the blade can overcome the tension of the return tension spring and swing to the outside of the storage gap, that is, the blade can be stretched out. The storage gap realizes mowing and is more convenient to use.

3. Since the free end of the blade is provided with a counterweight, it can make the free end of the blade generate greater centrifugal force, ensuring that the blade can be placed out of the storage gap even at a lower rotational speed of the disc body.

Description of drawings

Fig. 1 is a three-dimensional structure schematic diagram of the blade articulated lawn mower cutter head.

Fig. 2 is a structural sectional view of the blade articulated mower cutter head.

In the figure, 1. plate body; 11. storage gap; 12. flange; 13. notch; 14. connecting column; 15. limit block; 2. blade; 21. counterweight; Pin shaft; 3, reset extension spring; 4, screw.

detailed description

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

As shown in Figures 1 and 2, a blade articulated lawn mower cutter head includes two circular disc bodies 1, the two disc bodies 1 are parallel and fixedly connected, and there is a storage space between the sides of the two disc bodies 1. Gap 11, storage gap 11 is hinged with several arc-shaped strip-shaped blades 2, the long edges of the blades 2 are arc-shaped protruding edges, and several blades 2 are distributed circumferentially and are located at the edge of the disc body 1. When the blades 2 When the storage gap 11 swings outside, the free end of the blade 2 can extend out of the storage gap 11 , and a return tension spring 3 that can make the blade 2 swing into the storage gap 11 is connected between the disc body 1 and the blade 2 .

When not in use, the blade 2 is hidden in the storage gap 11. At this time, the cutting edge of the blade 2 is facing outward. When in use, the two disks 1 are driven by the motor to rotate at a high speed. The blade 2 is subjected to centrifugal force. When the centrifugal force is greater than the return tension spring 3 When the pulling force is high, the blade 2 can overcome the pulling force of the reset extension spring 3 and swing to the outside of the storage gap 11, that is, the blade 2 can stretch out from the storage gap to realize mowing. When the disc body 1 stops rotating, the pulling force of the reset extension spring 3 can move the blade 2 is pulled back in the storage gap, that is, the blade 2 is hidden, which is safer.

Specifically, the outer edge of the inner surface of the disc body 1 has an annular flange 12 along the circumference, and the flange 12 is provided with a gap 13 in the circumferential direction. The gaps 13 correspond one-to-one. When the blade 2 swings to the outside, the gap 13 can be stretched out, and the arc-shaped concave long edge of the blade 2 can abut against the edge of the gap 13, and the flanging 12 can seal the storage gap 11. To prevent foreign matter from entering the storage gap 11, the gap 13 is used for the blade 2 to swing out of the storage gap 11, and at the same time, the edge of the gap 13 can limit the blade 2 after the blade 2 swings in place.

Specifically, the free end side of the blade 2 is provided with several through holes along the length direction, and a counterweight 21 is inserted and fixedly connected in the through holes, and the counterweight 21 is located at the free end of the blade 2, so that the blade 2 can The greater centrifugal force is obtained from the free end, which ensures that the blade 2 can swing out of the storage gap even at a lower rotational speed of the disc body 1 . The inner end of the blade 2 has a sheet-shaped connecting portion 22, which is hinged between the two disk bodies 1 through a pin 23, and the return tension spring 3 is connected to the connecting portion 22, so that the connection of the blade 2 is more stable.

Specifically, there are several connecting columns 14 vertically on the side of the disc body 1, and the connecting columns 14 are distributed in the circumferential direction. 22, the disc body 1 is fixedly connected to the limit block 15 at the inner side of the blade 2, and when the blade 2 swings into the storage gap 11, it can lean against the limit block 15, and when the cutter head stops rotating, the blade 2 swings to the storage space. Inside the gap 11 and against the limit block 15 , preventing the blade 2 from excessively extending into the storage gap 11 .

Specifically, the stop block 15 is made of polyurethane material, and the blade 2 swings at a certain speed under the action of the return spring, and the blade 2 will collide with the stop block 15, and the stop block 15 of the polyurethane material can prevent the 2 damage.

Specifically, a number of connecting holes are opened on the side of one plate body 1 in the circumferential direction, and screw holes are opened on the connecting column 14 of the other plate body 1, and screws 4 are pierced in the connecting holes, and the screws 4 are screwed on the connecting column. In the screw holes of 14, the two disk bodies 1 are fixedly connected by screws 4, so that dismounting and blade 2 replacement are more convenient.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (7)

1. a kind of blade articulated mower cutterhead, it is characterised in that the disk body (1) including two circles, disk body described in two (1) phase It is parallel and be connected, and have between the side of amphidisc (1) in storage gap (11), the storage gap (11) be hinged with it is some The blade (2) of arc strip, the edge long of blade (2) the arc protrusion is cutting edge, and some blades (2) are circumferentially distributed simultaneously Positioned at the edge of disk body (1), when blade (2) is to storage gap (11) exterior oscillations, storage is stretched out in the free end of blade (2) Gap (11), being connected between the disk body (1) and blade (2) can make blade (2) be rocked to answering in storage gap (11) Position extension spring (3).

2. blade articulated mower cutterhead according to claim 1, it is characterised in that disk body (1) medial surface Outside circumferentially has the flange (12) of annular, and breach (13) is circumferentially offered on the flange (12), disk body described in two (1) Flange (12) leans, and breach (13) one-to-one corresponding on two flange (12), can be stretched out when blade (2) is to exterior oscillations Breach (13), and the edge long of blade (2) arc concave shape can be resisted against on breach (13) edge.

3. blade articulated mower cutterhead according to claim 2, it is characterised in that the free end of the blade (2) Some through holes are offered on side along its length, equal grafting is fixed with balancing weight (21) in the through hole.

4. the blade articulated mower cutterhead according to Claims 2 or 3, it is characterised in that the inner of the blade (2) Connecting portion (22) with sheet, the connecting portion (22) is hinged between amphidisc (1) by bearing pin (23), and described reset is drawn Spring (3) is connected on connecting portion (22).

5. blade articulated mower cutterhead according to claim 4 a, it is characterised in that side for the disk body (1) Vertically there are some connecting poles (14), some connecting poles (14) are circumferentially distributed, and one end of the reset tension spring (3) is connected on face On connecting pole (14), the other end is connected on connecting portion (22), and the disk body (1) is connected limited in the inner side of blade (2) Position block (15), when blade (2) be rocked to storage gap (11) it is interior when can be resisted against on limited block (15).

6. blade articulated mower cutterhead according to claim 5, it is characterised in that the limited block (15) is using poly- Urethane material is made.

7. blade articulated mower cutterhead according to claim 6, it is characterised in that disk body (1) side described in Some connecting holes are circumferentially offered on face, screw is offered on the connecting pole (14) of another disk body (1), worn in the connecting hole Screw (4) is provided with, and screw (4) is screwed onto in the screw of connecting pole (14).