Lawn mower

Abstract

The utility model discloses a mowing machine, which is characterized in that a plastic part base with larger mass volume and more functional structures in a hand-held self-propelled double-cutter-head mowing machine in the prior art is split into a power source mounting seat and a cutting transmission mechanism mounting seat which are independently separated, so that the production and assembly difficulty is reduced; the cutting transmission mechanism has the advantages that the cutting transmission mechanism mounting seat covers the special-shaped hole when being fixedly connected with the base plate, the whole part is prevented from being replaced due to damage of the front-end easily-damaged part, the circular double-hole position, used for mounting a pair of cutting knives, on the base plate is changed into the single special-shaped hole, existing design is avoided, and the effects of reducing materials and saving cost are achieved to a certain extent; the special-shaped hole is covered when the cutting transmission mechanism mounting seat is fixedly connected with the base plate; and the structural strength of the chassis, which is lost due to the elongation of the opening, is compensated.

Description

TECHNICAL FIELD

[0001] The utility model relates to garden equipment technical field, especially relates to a mower. BACKGROUND

[0002] The commonly used 20 inches or more large size hand-held self-propelled mower is generally provided with a double cutter head, one of which is provided with two cutting knives arranged side by side in the same cutting chamber and rotating in the same direction and at the same speed, wherein the cutting chamber is downwardly open, and a rear discharge port and a side discharge port are formed on the outer wall of the cutting chamber and extend towards the rear of the machine body and the outer side of the machine body, respectively, when the rear discharge port is open and the side discharge port is closed, the cut grass clippings are blown into the grass collecting hopper at the rear of the machine body by the airflow generated by the rotation of the cutting knives, when the side discharge port is open and the rear discharge port is closed, the cut grass clippings are blown out of the machine body by the airflow generated by the rotation of the cutting knives, and when the rear discharge port and the side discharge port are closed at the same time, the cut grass clippings are blown onto the grassland by the airflow generated by the rotation of the cutting knives.

[0003] In the above-mentioned mower of the prior art, the structural members forming the bottom frame are mainly a base and a chassis, the base is a plastic member and is integrally formed by injection molding, is used for simultaneously mounting a power source and a cutting transmission mechanism, and also builds a lower air duct for discharging the cut grass clippings to the grass collecting hopper, the chassis is a metal member and is integrally formed by metal die casting, a pair of circular holes are formed on the chassis and are used for transmission connection and mounting and fixing of a pair of cutting knives, and then the base and the chassis are fixedly connected, the power source, the cutting transmission mechanism and the pair of cutting knives are sequentially transmission connected, so that the pair of cutting knives can rotate at high speed around the middle axes thereof to realize the grass cutting function (for reference, US8701377B1 of the US patent). UTILITY MODEL CONTENTS

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a mower with an improved bottom frame structure.

[0005] The utility model discloses a lawn mower that comprises a power source, a power source mounting seat, a cutting transmission mechanism, a cutting transmission mechanism mounting seat, a chassis and a pair of cutting knives, the power source, the cutting transmission mechanism and the pair of cutting knives are sequentially transmission connection, are used for driving the pair of cutting knives rotation and realize cutting, the power source mounting seat and the cutting transmission mechanism mounting seat are fixed connection with the chassis respectively, and the chassis is in the form of the cover that is open downward, and the upper wall is provided with a special-shaped hole, and the inside forms a cutting chamber, and a pair of cutting knife mounting hole parts are formed on the special-shaped hole, and the pair of cutting knives are rotatably fixed in the cutting chamber, and the cutting transmission mechanism comprises a pair of cutting transmission pieces, and a pair of cutting transmission piece mounting holes are formed on the cutting transmission mechanism mounting seat, and the cutting transmission mechanism mounting seat covers the special-shaped hole, and the pair of cutting transmission piece mounting holes and the pair of cutting knife mounting hole parts are arranged in the upper and lower opposite mode.

[0006] In some embodiments, the power source mounting seat, the cutting transmission mechanism mounting seat and the chassis are each integrally formed.

[0007] In some embodiments, a connecting hole part is further formed on the special-shaped hole, the connecting hole part connects the pair of cutting knife mounting hole parts, the connecting hole part is in the form of a strip, the cutting knife mounting hole parts are in the form of a circle, and the width of the connecting hole part is less than the diameter of the cutting knife mounting hole parts.

[0008] In some embodiments, the lower part of the power source mounting seat is attached to the side wall of the chassis, and the upper part of the power source mounting seat extends out of a straddling part to be fixedly connected to the upper wall of the chassis.

[0009] In some embodiments, a special-shaped groove is formed on the chassis, and the special-shaped hole, the cutting transmission mechanism mounting seat and the straddling part are all located in the special-shaped groove.

[0010] In some embodiments, the cutting transmission mechanism mounting seat and the straddling part are arranged adjacently and have matching shapes and curved staggered edges.

[0011] Thanks to the above technical solutions, the utility model has the following advantages compared with the prior art:

[0012] The utility model splits the plastic base with a large mass and volume and a plurality of functional structures in the prior art hand-held self-propelled double-knife disc lawn mower into the power source mounting seat and the cutting transmission mechanism mounting seat, which are independently separated, reduces the production and assembly difficulty, avoids the replacement of the whole piece due to the damage of the front end, changes the circular double-hole position on the chassis for mounting the pair of cutting knives into a single special-shaped hole, avoids the existing design, reduces the material and saves the cost to some extent, and in addition, the cutting transmission mechanism mounting seat covers the special-shaped hole when being fixedly connected to the chassis, which compensates for the structural strength loss of the chassis due to the hole opening and lengthening. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1It is the embodiment one of the lawn mower of the utility model Figure 1 .

[0014] Figure 2 It is the embodiment one of the lawn mower of the utility model

[0015] Figure 3 It is the embodiment one of the lawn mower of the utility model Figure 2 .

[0016] Figure 4 It is the embodiment one of the lawn mower of the utility model

[0017] Figure 5 It is the embodiment one of the lawn mower of the utility model

[0018] Figure 6 It is the embodiment one of the lawn mower of the utility model

[0019] In the drawing: 1, power source; 2, power source mounting seat; 3, cutting transmission mechanism; 4, cutting transmission mechanism mounting seat; 5, chassis; 6, cutting knife; 7, special-shaped hole; 8, cutting chamber; 9, cutting knife mounting hole part; 10, cutting transmission part; 11, cutting transmission part mounting hole; 12, connecting hole part; 13, straddling part; 14, special-shaped slot; 15, protective shell; 16, lower part air duct. DETAILED DESCRIPTION

[0020] The content of the utility model is further explained in detail as follows by combining with specific embodiments:

[0021] Figures 1 to 6 The embodiment one of the lawn mower of the utility model is disclosed.

[0022] Combined with the drawings Figures 1 to 6, embodiment one is a hand-held self-propelled double cutter mower, comprising a power source 1, a power source mounting seat 2, a cutting transmission mechanism 3, a cutting transmission mechanism mounting seat 4, a chassis 5 and a pair of cutting knives 6, the power source 1 is a gasoline engine, the power source mounting seat 2 is used for installing the power source 1, the cutting transmission mechanism 3 is a wheel assembly, the cutting transmission mechanism mounting seat 4 is used for installing the cutting transmission mechanism 3, the cutting transmission mechanism 3 is covered with a protective shell 15 on the outside of the chassis 5, the power source 1, the cutting transmission mechanism 3 and the pair of cutting knives 6 are sequentially transmission connected, used for driving the pair of cutting knives 6 to rotate to realize cutting, the power source mounting seat 2 and the cutting transmission mechanism mounting seat 4 are fixedly connected with the chassis 5 respectively, the chassis 5 is in the form of a cover with an open top, a heterogeneous hole 7 is formed in the upper wall, a cutting chamber 8 is formed inside, a pair of cutting knife mounting hole parts 9 are formed on the heterogeneous hole 7, the pair of cutting knives 6 are arranged in parallel and at the same height and are rotatably fixed in the cutting chamber 8, the cutting transmission mechanism 3 comprises a pair of cutting transmission members 10, the cutting transmission member 10 is a synchronous pulley, a pair of cutting transmission member mounting holes 11 are formed on the cutting transmission mechanism mounting seat 4, the synchronous pulley is rotatably fixed on the cutting transmission member mounting hole 11, the cutting transmission mechanism mounting seat 4 covers the heterogeneous hole 7, the pair of cutting transmission member mounting holes 11 and the pair of cutting knife mounting hole parts 9 are arranged in vertical opposition, the power shaft of the gasoline engine is connected into the wheel assembly in a clutchable manner, the cutting knife 6 is axially fixedly connected through a rotating shaft and a synchronous pulley shaft, the rotating shaft is rotatably fixedly installed in the cutting knife mounting hole part 9 through a bearing, the gasoline engine works to drive the pair of cutting knives 6 to rotate at high speed around the rotating shafts respectively, so as to cut the grass extending into the cutting chamber 8.

[0023] In embodiment one and some other embodiments of the present application,

[0024] The power source mounting seat 2, the cutting transmission mechanism mounting seat 4 and the chassis 5 are integrally formed respectively, the power source mounting seat 2 and the cutting transmission mechanism mounting seat 4 are plastic parts and are integrally formed by injection molding, and the chassis 5 is a steel part and is integrally formed by pressure casting;

[0025] A connecting hole part 12 is further formed on the heterogeneous hole 7, the connecting hole part 12 connects the pair of cutting knife mounting hole parts 9, the connecting hole part 12 is in the form of a strip, the cutting knife mounting hole part 9 is in the form of a circle, the width of the connecting hole part 12 is less than the diameter of the cutting knife mounting hole part 9, so that the heterogeneous hole 7 as a whole is in the form of a dumbbell, the width of the connecting hole part 12 is small, and the cutting knife mounting hole parts 9 are connected while the structural strength loss of the chassis 5 caused by hole opening and lengthening is minimized;

[0026] The lower part of the power source mounting seat 2 is attached to the side wall of the chassis 5, and the upper part of the power source mounting seat 2 extends out of the upper wall of the chassis 5 and is fixedly connected to the upper wall of the chassis 5 through a straddling part 13, the straddling part 13 is located on one side of the power source mounting seat 2, and the other side of the power source mounting seat 2 is also provided with a lower air duct 16 for discharging grass clippings to the grass collecting hopper;

[0027] The bottom plate 5 is provided with a special-shaped groove 14, the special-shaped hole 7, the cutting transmission mechanism mounting seat 4 and the straddle part 13 are located in the special-shaped groove 14, and the height difference formed by the special-shaped groove 14 sinking and the upper wall of the bottom plate 5 provides space for the installation of the bearing of the cutting knife 6;

[0028] The cutting transmission mechanism mounting seat 4 and the straddle part 13 are adjacently arranged and the shapes of the adjacent edges of the two are matched and bent and staggered, so that the cutting transmission mechanism mounting seat 4 and the straddle part 13 are flat and beautiful and convenient for positioning, alignment and installation.

[0029] The above examples are only for illustrating the technical concept and characteristics of the utility model, the purpose is to enable the person skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model, and equivalent changes or modifications made according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A lawnmower, characterized in that: The device includes a power source (1), a power source mounting base (2), a cutting transmission mechanism (3), a cutting transmission mechanism mounting base (4), a chassis (5), and a pair of cutting blades (6). The power source (1), the cutting transmission mechanism (3), and the pair of cutting blades (6) are sequentially connected for driving the pair of cutting blades (6) to rotate and achieve cutting. The power source mounting base (2) and the cutting transmission mechanism mounting base (4) are fixedly connected to the chassis (5). The chassis (5) is a downward-opening cover with irregularly shaped holes (7) on its upper wall. An internal cutting chamber (8) is formed, and a pair of cutting blade mounting holes (9) are formed on the irregular hole (7). Both of the cutting blades (6) are rotatably fixed in the cutting chamber (8). The cutting transmission mechanism (3) includes a pair of cutting transmission components (10). A pair of cutting transmission component mounting holes (11) are provided on the cutting transmission mechanism mounting base (4). The cutting transmission mechanism mounting base (4) covers the irregular hole (7). The pair of cutting transmission component mounting holes (11) and the pair of cutting blade mounting holes (9) are arranged vertically opposite each other.

2. The lawnmower according to claim 1, characterized in that: The power source mounting base (2), the cutting transmission mechanism mounting base (4), and the chassis (5) are all integrally formed.

3. The lawnmower according to claim 1, characterized in that: A connecting hole (12) is also formed on the irregular hole (7). The connecting hole (12) connects to a pair of cutting blade mounting holes (9). The connecting hole (12) is strip-shaped, and the cutting blade mounting holes (9) are circular. The width of the connecting hole (12) is smaller than the diameter of the cutting blade mounting holes (9).

4. The lawnmower according to claim 1, characterized in that: The lower part of the power source mounting base (2) is attached to the side wall of the chassis (5), and the upper part has a straddle part (13) that is fixedly connected to the upper wall of the chassis (5).

5. The lawnmower according to claim 4, characterized in that: The chassis (5) has an irregular groove (14), and the irregular hole (7), the cutting transmission mechanism mounting seat (4) and the straddle part (13) are all located in the irregular groove (14).

6. The lawnmower according to claim 4, characterized in that: The cutting transmission mechanism mounting base (4) and the straddle part (13) are arranged adjacent to each other, and their adjacent sides are matched in shape and bent and intersected.

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