CN206227015U - A kind of hay mover - Google Patents

Abstract

The utility model provides a lawn mower, which belongs to the technical field of machinery. The lawn mower includes a frame, a plurality of wheels are arranged under the frame, a body is arranged above the frame, the body is tubular, a cover plate is arranged on the upper end of the body, and a mobile platform is arranged in the body to slide along the vertical direction , the mobile platform is provided with a transmission shaft for rotation, the transmission shaft is vertically arranged, the upper end of the transmission shaft is located above the mobile platform, the lower end of the transmission shaft is located between the lower end of the body and the wheels and the end is fixedly connected with a fixed seat, the fixed seat The cutter head is detachably connected to the lower side, the motor and battery are provided on the mobile platform, the motor and the battery are electrically connected, the output shaft of the motor and the upper end of the transmission shaft are connected by transmission, and there is also a device on the body that can drive the mobile platform to slide up and down. The drive mechanism is fixed on the frame with handrails. The utility model can conveniently adjust the distance between the cutter head and the ground, is convenient to use, and has a wide application range.

Description

a lawn mower

technical field

The utility model belongs to the technical field of machinery and relates to a lawnmower.

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, a motor, a walking wheel, a walking mechanism, a blade, a handrail, and a control part.

The cutter head is generally connected with a motor, and the motor drives the cutter head to rotate to realize the function of mowing grass. However, the distance between the cutter head and the ground of the current lawnmower is either difficult to adjust, the scope of application is limited, or the structure is complicated and the cost is very high, so it is not easy to popularize.

Therefore, it is very necessary to invent a lawn mower with a simple structure and the distance between the cutter head and the ground can be adjusted.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and propose a lawnmower. Automatically hides the blade for greater safety.

The purpose of the utility model can be achieved through the following technical proposals: a lawnmower, comprising a frame, a plurality of wheels are arranged below the frame, an organic body is arranged above the frame, the body is tubular, and the The upper end of the body is provided with a cover plate, and a mobile platform is slid along the vertical direction in the body, and a transmission shaft is rotated on the mobile platform, and the transmission shaft is vertically arranged, and the upper end of the transmission shaft is located at the mobile Above the platform, the lower end of the transmission shaft is located between the lower end of the body and the wheels, and the end is fixedly connected with a fixed seat, the lower side of the fixed seat is detachably connected with a cutter head, and the mobile platform is provided with a motor and the battery, the motor is electrically connected to the battery, the output shaft of the motor is connected to the upper end of the transmission shaft, and the body is also provided with a drive mechanism that can drive the mobile platform to slide up and down. Even with armrests.

The driving mechanism drives the mobile platform to slide up and down to adjust the distance between the cutter head and the ground, so that the lawn mower has a wide range of applications, and the operator can push the handrail to make the wheels roll on the grass.

In the above-mentioned lawn mower, the drive mechanism includes a screw, a handwheel, a nut and a protective shell, the protective shell is arranged on the upper side of the mobile platform, and the upper ends of the motor, the battery and the transmission shaft are all located in the protective shell Among them, a through hole is opened on the cover plate, a nut is fixedly connected to the upper end of the through hole, the through hole and the nut are coaxially arranged, the screw rod is vertically arranged and connected in the nut by thread, the screw rod The lower end of the screw rod is rotatably connected to the protective shell, and the upper end of the screw rod is provided with a handwheel.

The screw can be rotated by turning the hand wheel, and the screw moves up and down along the axial direction of the nut, thereby driving the protective shell and the mobile platform to move up and down, and finally achieves the purpose of adjusting the distance between the cutter head and the ground. The structure is simple, the operation is convenient, and the cost is low. Low.

In the above-mentioned lawnmower, the cross section of the body is rectangular, and the inner wall of the body is provided with several chutes, the chutes are vertically arranged, and the cross section of the mobile platform is also rectangular. Several slide blocks are arranged on the edge of the platform, and the several slide blocks correspond to the several slide grooves one by one, and the slide blocks are slidably arranged in the slide grooves.

Specifically, a chute is provided on the four surfaces of the inner wall of the body, a slider is provided on the four edges of the mobile platform, and the four sliders are respectively slidably arranged in the four chutes, so that the mobile The sliding of the platform is more stable and reliable.

In the above-mentioned lawnmower, the end of the output shaft of the motor is fixedly connected to the first bevel gear, and the upper end of the transmission shaft is fixedly connected to the second bevel gear, and the first bevel gear and the second bevel gear are meshed for transmission. The power of the motor is transmitted to the transmission shaft through the meshing transmission of the first bevel gear and the second bevel gear, and the structure is simple and reliable.

In the above-mentioned lawn mower, the cutter head includes two circular disk bodies, the two disk bodies are parallel and fixedly connected, and there is a storage gap between the sides of the two disk bodies, and the storage gap is hinged There are several arc-shaped strip-shaped blades, and the protruding long edges of the arc-shaped blades are cutting edges. Several of the blades are distributed in the circumferential direction and are located at the edge of the disc body. When the blades swing to the outside of the storage gap, the free movement of the blades The end extends 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 .

Compared with the prior art, this mower has the following advantages:

1. The driving mechanism can drive the mobile platform to slide up and down to adjust the distance between the cutter head and the ground, which makes the lawn mower have a wide range of applications.

2. When the cutter head stops rotating, the pulling force of the return tension spring can pull the blade back into the storage gap, that is, the blade is hidden, which is safer.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a sectional view at A-A in Fig. 1 .

Fig. 3 is a schematic diagram of the three-dimensional structure of the cutter head.

Fig. 4 is a structural sectional view of the 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, return tension spring; 4, screw; 5, frame; 51, wheel; 6, cutter head; 7, body; 71, cover plate; 72, protective shell; 73, mobile platform; 74, slider ; 75, chute; 76, nut; 77, screw rod; 78, hand wheel; 79, through hole; 8, motor; 81, bevel gear one; 82, bevel gear two; 83, storage battery; 84, transmission shaft; 85 , fixed seat; 9, armrest.

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 Fig. 1 to Fig. 4, a kind of lawnmower comprises frame 5, and the bottom of described frame 5 is provided with several wheels 51, and the top of described frame 5 is provided with organism 7, and body 7 is tubular, The upper end of the body 7 is provided with a cover plate 71, a mobile platform 73 is slidably arranged in the body 7 along the vertical direction, and a transmission shaft 84 is rotated on the mobile platform 73, and the transmission shaft 84 is vertically arranged , the upper end of the transmission shaft 84 is located above the mobile platform 73, the lower end of the transmission shaft 84 is located between the lower end of the body 7 and the wheels 51 and the end is fixedly connected with a fixed seat 85, the lower side of the fixed seat 85 The cutter head 6 is detachably connected on the top, and the mobile platform 73 is provided with a motor 8 and a battery 83, the motor 8 and the battery 83 are electrically connected, and the output shaft of the motor 8 and the upper end of the transmission shaft 84 are connected by transmission. , the body 7 is also provided with a driving mechanism capable of driving the mobile platform 73 to slide up and down, and the frame 5 is fixedly connected with a handrail 9 .

The driving mechanism drives the mobile platform 73 to slide up and down to adjust the distance between the cutter head 6 and the ground, so that the lawn mower has a wide range of applications. The operator can push the handrail 9 by hand to make the wheels 51 roll on the grass.

Specifically, the transmission shaft 84 is rotatably arranged on the mobile platform 73 through bearings, and the arrangement of the bearings can make the rotation of the transmission shaft 84 smoother and more reliable.

Specifically, the drive mechanism includes a screw 77, a handwheel 78, a nut 76 and a protective case 72, the protective case 72 is arranged on the upper side of the mobile platform 73, the upper end of the motor 8, the storage battery 83 and the transmission shaft 84 are all located in the protective shell 72, the cover plate 71 is provided with a through hole 79, the upper end of the through hole 79 is fixedly connected with a nut 76, the through hole 79 and the nut 76 are coaxially arranged, and the screw rod 77 is threaded Connected in the nut 76 , the lower end of the screw rod 77 is rotatably connected to the protective case 72 , and the upper end of the screw rod 77 is provided with a hand wheel 78 .

The screw rod 77 can be rotated by turning the hand wheel 78, and the screw rod 77 moves up and down along the axial direction of the nut 76, thereby driving the protective shell 72 and the mobile platform 73 to move up and down, and finally realizes the purpose of adjusting the distance between the cutterhead 6 and the ground. The structure is simple, the operation is convenient, and the cost is low.

Specifically, the cross-section of the body 7 is rectangular, and the inner wall of the body 7 is provided with several chute 75, the chute 75 is vertically arranged, and the cross-section of the mobile platform 73 is also rectangular, moving The edge of platform 73 is provided with several block slide blocks 74, and several block slide blocks 74 and several slide grooves 75 correspond one to one and slide block 74 is arranged in slide groove 75 slidingly.

Specifically, a chute 75 is provided on the four surfaces of the inner wall of the body 7, and a slider 74 is provided on the four edges of the mobile platform 73, and the four sliders 74 are slidably arranged on the four chutes 75 respectively. In this way, the sliding of the mobile platform 73 can be made more stable and reliable.

Specifically, the end of the output shaft of the motor 8 is fixedly connected with a bevel gear 1 81, and the upper end of the transmission shaft 84 is fixedly connected with a bevel gear 2 82, and the bevel gear 1 81 and the bevel gear 2 82 are meshed for transmission. .

The power of the motor 8 is transmitted to the transmission shaft 84 through the meshing transmission of the first bevel gear 81 and the second bevel gear 82, and the structure is simple and reliable.

Specifically, the cutter head 6 includes two circular disc bodies 1, the two disc bodies 1 are parallel and fixedly connected, and there is a storage gap 11 between the sides of the two disc bodies 1, and the storage gap 11 A plurality of arc-shaped strip-shaped blades 2 are hinged, and the long edges of the arc-shaped protrusions of the blades 2 are cutting edges. When externally swinging, the free end of the blade 2 extends out of the storage gap 11 , and a return tension spring 3 is connected between the disc body 1 and the blade 2 to make the blade 2 swing into the storage gap 11 .

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 (5)

1. a lawn mower, comprising a frame (5), a plurality of wheels (51) are arranged below the frame (5), and an organism (7) is arranged above the frame (5), its feature The body (7) is tubular, the upper end of the body (7) is provided with a cover plate (71), and a mobile platform (73) is slid along the vertical direction in the body (7), and the mobile platform (73) upper rotation is provided with transmission shaft (84), and described transmission shaft (84) is vertically arranged, and the upper end of described transmission shaft (84) is positioned at the top of mobile platform (73), and the top of described transmission shaft (84) The lower end is located between the lower end of the body (7) and the wheel (51) and the end is fixedly connected with a fixed seat (85), and the lower side of the fixed seat (85) is detachably connected with a cutter head (6). The mobile platform (73) is provided with a motor (8) and a battery (83), the motor (8) is electrically connected to the battery (83), and the output shaft of the motor (8) and the upper end of the transmission shaft (84) The body (7) is also provided with a driving mechanism capable of driving the mobile platform (73) to slide up and down, and the frame (5) is fixedly connected with a handrail (9). 2. A kind of lawn mower according to claim 1, characterized in that, the drive mechanism comprises a screw rod (77), a hand wheel (78), a nut (76) and a protective shell (72), and the protective shell (72) is arranged on the upper side of mobile platform (73), and the upper end of described motor (8), accumulator (83) and drive shaft (84) is all positioned in protective case (72), on described cover plate (71) Offer a through hole (79), the upper end of the through hole (79) is fixedly connected with a nut (76), the through hole (79) and the nut (76) are coaxially arranged, and the screw rod (77) is vertically arranged And be connected in the nut (76) by thread, the lower end of described screw rod (77) is rotatably connected on the protective shell (72), and the upper end of described screw rod (77) is provided with handwheel (78). 3. A kind of lawnmower according to claim 2, is characterized in that, the cross-section of described body (7) is rectangular, and described body (7) inner wall is provided with several slide grooves (75), so The chute (75) is vertically arranged, and the cross section of the mobile platform (73) is also rectangular, and the edge of the mobile platform (73) is provided with several slide blocks (74), several slide blocks (74) and several The bar chute (75) corresponds one by one and the slide block (74) is slidably arranged in the chute (75). 4. A kind of lawnmower according to claim 3, is characterized in that, the end portion of the output shaft of described motor (8) is fixedly connected with conical gear one (81), and the upper end of described transmission shaft (84) Bevel gear two (82) is fixedly connected, and described bevel gear one (81) and bevel gear two (82) mesh transmission. 5. A kind of lawnmower according to claim 1 or 2 or 3 or 4, is characterized in that, described cutter head (6) comprises two circular disc bodies (1), two described disc bodies (1) ) are parallel and fixedly connected, and there is a storage gap (11) between the sides of the two discs (1), and several arc-shaped blades (2) are hinged in the storage gap (11), and the blades ( 2) The arc-shaped protruding long edge is the cutting edge, and several blades (2) are distributed in the circumferential direction and are located at the edge of the disc body (1). When the blades (2) swing to the outside of the storage gap (11), the blades The free end of (2) protrudes from 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). ).