CN107306585B - garden lawn mower - Google Patents

Abstract

The invention relates to a gardening mower, and belongs to the technical field of agriculture and forestry test facilities. The machine comprises a disk-shaped housing with an open bottom and a support frame arranged above, wherein a radial blade-shaped cutting knife is arranged on a vertical rotating shaft in the housing through a height adjusting device, a guide hood for guiding air flow to the upper side is tangentially extended from one side of the housing, and an outlet of the guide hood faces to a collecting bag which can be sleeved on the support frame; the upper end of the vertical rotating shaft is in transmission connection with a power input device which extends radially through a transmission box positioned on the housing; the upper part of the housing is provided with a supporting universal wheel through a cantilever bracket at one side far away from the power input device. The invention has compact structure, small volume, complete functions and convenient traction, thereby being easy to popularize and apply.

Description

garden lawn mower

technical field

The invention relates to a lawn mower, in particular to a gardening lawn mower, which belongs to the technical field of garden machinery.

Background technique

According to the applicant's knowledge, most of the domestic gardening lawn mowers are imported from abroad. The machines are generally bulky and expensive, not suitable for the national conditions, and difficult to use, maintain and repair. The self-developed horticultural lawnmower has single operation function and weak adaptability. It mainly has the disadvantages of poor grass quality and lack of grass collection function. The power platform is large in size and weight, heavy in operation, low in utilization rate, and large in power per mu. Therefore, it is difficult to promote and apply it.

As a result, farmers and herdsmen seriously lack suitable lawn mowing machinery and equipment, resulting in increased lawn trimming costs, low orchard yields, high yields but poor harvests or high yields and poor harvests.

Contents of the invention

The object of the present invention is to: aim at the shortcomings of the above-mentioned prior art, to propose a gardening lawn mower that is compact in size, high in grass quality, and can be easily equipped with a grass collection device, so as to provide a gardening lawn mower suitable for the national conditions, so that it can be practically popularized and applied.

In order to achieve the above object, the basic technical solution of the garden lawn mower of the present invention is as follows: a disc-shaped casing with an open bottom and a support frame installed above, the vertical shaft in the casing is installed with a radially extending blade-shaped cutting knife through a height adjustment device, one side of the casing extends tangentially to a shroud that guides the air flow upwards, and the outlet of the shroud faces a collection bag that can be placed on the support frame; One side of the power input device is equipped with supporting universal wheels through a cantilever frame.

When working, the power input device of the gardening lawnmower of the present invention is connected with the power output transmission of the power source such as a small diesel engine with pulleys. After starting, the cutting knife can be driven to mow grass, and the cut grass can be cut many times due to the high speed of the cutting knife before output, forming small pieces that meet the quality requirements of the broken grass. The outward-facing wind deflector directly outputs the spilled water, or is adjusted from the mouth of the cover to the inward flow deflector to guide the collection bag hanging on the collection bag support frame for collection. The invention has the advantages of compact structure, small volume, complete functions and convenient traction, so it is easy to popularize and apply.

A further perfection of the present invention is that an indexable guide cover is installed above the outlet of the guide cover.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the present invention.

FIG. 2 is a top view of FIG. 1 .

Fig. 3 is a schematic perspective view of the three-dimensional structure of the embodiment in Fig. 1 .

FIG. 4 is a schematic perspective view of the three-dimensional structure of the embodiment of FIG. 1 from another perspective.

Fig. 5 is a schematic diagram of the structure of the cutting knife in the embodiment of Fig. 1 .

FIG. 6 is a top view of FIG. 5 .

FIG. 7 is an enlarged side view of FIG. 5 .

Fig. 8 is a schematic perspective view of the three-dimensional structure of the height adjustment device of the embodiment in Fig. 1 .

FIG. 9 is a sectional view of FIG. 10 .

Fig. 10 is a schematic structural view of the height-adjusting device on the casing of the embodiment in Fig. 1 .

Detailed ways

Embodiment one

The gardening mower of the present embodiment is shown in Figure 1 to Figure 4, and the bottom of disc-shaped case 6 is open, and the support frame 1 of frame mechanism is installed above, is supported on the vertical shaft 4-1 of case 6 center by support bearing 6-1 and is installed radially extending blade-shaped cutting knife 5 by height-adjusting device 4. The concrete structure of cutting knife 5 is shown in Figure 5 to 7, is made of the sheet-like main body 5-1 of middle part, the rotor 5-2 of reverse twist at both ends and the hook-shaped cutter head 5-3 that is fixed on rotor 5-2 end. When working, the cutting knife rotates at high speed to mow grass, and at the same time generates axial wind force.

The specific structure of the height adjustment device 4 is shown in Figures 8 to 10. It includes a bearing sleeve 4-2 that forms a vertical movement pair with the vertical shaft 4-1 through a spline. The bearing sleeve 4-2 forms an axially constrained rotating pair through a ball bearing 4-4 and a shift fork sleeve 4-3. Both sides of the shift fork cover 4-3 respectively extend out the cylindrical boss 4-a forming the mobile pair with the horizontal chute of the shift fork 4-5. One end of the shift fork 4-5 is hinged in the case 6 through the pin shaft 4-6. Therefore, the height adjustment handle can be easily manipulated, and the shift fork sleeve is driven by leverage to drive the bearing sleeve and the cutting knife to be raised and lowered as required, and then fixed at a corresponding gear position. Of course, the height adjustment device can also adopt other structures, such as adopting spiral height adjustment and the like.

One side of the casing 6 radially extends an expanding arc 6-r, and the end of the expanding arc 6-r tangentially extends out a shroud 2 that guides the airflow upwards, and the outlet of the shroud 2 faces a collection bag that can be set on the support frame 1. In this way, the broken grass cut by the cutter rotates and gathers towards the side of the casing under the action of centrifugal force. When the radius of gyration at the end of the expanding arc becomes smaller and the tangential direction creates a diversion space towards the side and upwards, it is easier to enter the shroud. An indexable guide cover 9 is installed above the outlet of the guide cover 2. When the collection bag is set on the support frame 1, the guide cover can cooperate with the guide cover to introduce the broken grass into the collection bag.

The upper end of the vertical rotating shaft 4-1 meshes with the power output end of the transmission box 3 located on the casing 6 through the bevel gear, and the power input end of the transmission box 3 is used for transmission connection with the tractor power input device extending radially. The upper part of the casing 6 is equipped with a pair of supporting universal wheels 7 through a cantilever frame away from the side of the power input device, so the manipulation is flexible and convenient.

The test proves that the gardening mower of the present embodiment has the following characteristics:

1. The quality of grass cutting is good: the cutting knife rotates at a high speed of 2800r/min, and the cut grass is cut several times to form uniform small pieces with a diameter of about 3mm;

2. Good collection effect: the broken grass gathers together under the centrifugal action generated by the high-speed rotation of the cutting knife, and the high-speed rotation of the rotor with an inclination angle of 150° of the cutting knife produces axial flow wind force similar to a fan, so that the broken grass enters the shroud and is collected by the collection bag;

High utilization rate of the platform: there is only one input shaft, so the traction power platform with small size and weight can be selected, and the matching power can be selected according to the working conditions, so the utilization rate is high.

Claims (5)

1. A gardening lawn mower, characterized in that: it comprises a disc-shaped case with an open bottom and a support frame installed above, the vertical rotating shaft supported by the central support bearing of the case is installed with a radially extending blade-shaped cutting knife through a height adjustment device, one side of the case extends tangentially to a shroud that guides the airflow upwards, and the outlet of the shroud is directed towards a collection bag that can be placed on the support frame; One side of the input device is equipped with supporting universal wheels through the cantilever frame; The height adjustment device includes a bearing sleeve that forms a vertical moving pair with the vertical rotating shaft, the bearing sleeve and the shift fork sleeve form an axially constrained rotating pair, the two sides of the shift fork sleeve respectively extend out from the horizontal chute of the shift fork to form the boss of the moving pair, and one end of the shift fork is hinged in the casing; A radially expanding arc extends from one side of the casing, and a tangentially extending end of the expanding arc extends out from a shroud that guides the airflow upwards to the side. 2. The gardening lawn mower according to claim 1, characterized in that: the hinge of the shift fork extends obliquely upwards with a height adjustment handle with a gear adjustment and limit structure, and the arc-shaped adjustment seat is fixed on the cover, and the adjustment seat has a plurality of gear holes. 3. The gardening lawnmower according to claim 2, wherein the cutting blade is composed of a sheet-shaped main body in the middle, a rotor with opposite twists at both ends, and a hook-shaped cutter head fixed at the end of the rotor. 4. The gardening lawnmower according to claim 3, characterized in that: an indexable guide cover is installed above the outlet of the guide cover. 5. The gardening lawn mower according to claim 4, characterized in that: a disc-shaped cutting cover is fixed above the cutting knife.