Grass trimming head for mower

Abstract

The utility model relates to the technical field of mowing machines, and discloses a mowing head for a mowing machine, which comprises a connecting main rod, a handrail is fixedly sleeved on the outer wall of the connecting main rod, and an anti-slip ring pad is fixedly sleeved on the outer wall of the connecting main rod. By arranging an installation sleeve ring, an installation circular plate, a fixing circular plate and threaded connection of a hexagon bolt penetrating through a fixing hole, firm installation between the grass mowing head assembly and the connecting main rod is achieved, the grass mowing head is effectively prevented from loosening or falling off in the working process, a rotating shaft protection shell is arranged to protect a rotating shaft from being damaged by the external environment, and the service life of the grass mowing head assembly is prolonged. The durability of the grass trimming head is enhanced, the grass trimming head upper shell and the grass trimming head lower shell are matched, so that the internal structure of the grass trimming head is more compact and easy to maintain, further, through a limiting column and an adjusting pin arranged on a spring, the fastening degree of a grass cutting rotating piece is convenient to adjust, and therefore the cutting effect of the grass trimming head under different grassland conditions is ensured; the effects of improving the working efficiency and prolonging the service life of the grass trimming head are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a grass trimmer head for a lawn mower. Background Art

[0002] A lawn mower is a mechanical tool used to trim lawns, vegetation, etc. As an important tool in landscaping and agricultural production, its performance and use effect directly affect the cleanliness and beauty of lawns and fields. It is composed of a cutter disc, an engine, a traveling wheel, a traveling structure, a blade, an armrest, and a control part. The cutter disc is mounted on the traveling wheel, the cutter disc is equipped with an engine, and the blade is mounted on the output shaft of the engine. The blade utilizes the high-speed rotation of the engine to increase the speed a lot, saving the working time of the weeding workers or replacing the cutter disc with a mowing head for mowing.

[0003] The traditional lawn mower trimmer head is not stable enough at the installation position, which may cause it to loosen or fall off during use. This not only affects the mowing effect, but also may pose a safety hazard to the user. In addition, the structural strength of the lawn mower head may be insufficient, making it difficult to withstand long-term and high-intensity cutting operations, resulting in a short service life. Therefore, it is necessary to design a lawn mower trimmer head. Utility Model Content

[0004] The purpose of the present utility model is to provide a trimmer head for a lawn mower to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a grass trimmer head for a lawn mower, comprising a connecting main rod, an outer wall fixing sleeve of the connecting main rod is provided with an armrest, an outer wall fixing sleeve of the connecting main rod is provided with an anti-slip ring pad, and is located above the armrest, and a driving mechanism is provided on the top of the connecting main rod; a grass trimmer head assembly, wherein the grass trimmer head assembly is arranged below the connecting main rod; the grass trimmer head assembly comprises: an installation portion, wherein the installation portion is arranged below the connecting main rod; a reinforcement portion, wherein the reinforcement portion is arranged below the connecting main rod, and the reinforcement portion is located outside the installation portion.

[0006] Preferably, the mounting part includes: a mounting collar, which is fixedly mounted on the bottom of the connecting main rod; a mounting circular plate is fixedly mounted on the bottom of the mounting collar, a fixed circular plate is provided below the mounting circular plate, and fixing holes are equidistantly provided on the top circumference of the fixed circular plate, and the fixing holes extend to the top of the fixed circular plate.

[0007] By providing a mounting collar, it is fixedly mounted on the bottom of the connecting main rod and serves as the basis of the mounting part.

[0008] A mounting circular plate is provided and fixedly mounted on the bottom of the mounting collar to further support and fix subsequent components.

[0009] A fixing circular plate is provided below the mounting circular plate, and fixing holes are equidistantly opened on the top circumference of the fixing circular plate for tightly connecting the fixing circular plate and other components through hexagonal bolts.

[0010] Preferably, a hexagonal bolt is connected to the inside of the fixing hole through a thread, a shaft protection shell is fixedly installed on the bottom of the fixing circular plate, and a grass trimmer head upper shell is fixedly installed on the bottom of the shaft protection shell.

[0011] A rotating shaft protection shell is provided and fixedly mounted on the bottom of the fixed circular plate to protect the rotating shaft portion from damage.

[0012] The upper shell of the mowing head is provided and fixedly mounted on the bottom of the rotating shaft protective shell, and is one of the main components of the mowing head.

[0013] Preferably, a grass trimming head lower shell is provided below the grass trimming head upper shell, a limiting column is provided on the top of the inner wall of the grass trimming head upper shell through a spring, and an adjusting pin is provided on one side of the limiting column.

[0014] The lower shell of the grass trimmer head is provided to cooperate with the upper shell of the grass trimmer head to form the main structure of the grass trimmer head.

[0015] A limit column is provided, which is arranged on the top of the inner wall of the upper shell of the mowing head through a spring, so as to limit the moving range of the adjusting pin.

[0016] Preferably, the outer wall of the adjusting pin is provided with grass cutting rotors, and there are three groups of them. The inner wall top of the upper shell of the grass trimming head is fixedly provided with reinforcing ribs at equal intervals.

[0017] An adjusting pin is provided on one side of the limiting column, and three groups of grass-cutting rotating blades are sleeved on the outer wall of the limiting column, which are used for rotating and cutting grass under the drive of the driving mechanism.

[0018] Reinforcing ribs are provided and fixedly mounted at equal intervals on the top circumference of the inner wall of the upper shell of the mowing head to enhance the structural strength of the upper shell of the mowing head.

[0019] Preferably, the reinforced part includes: an arc-shaped reinforcement shell, which is fixedly installed on the outer wall of the upper shell of the mowing head, and there are three groups in total; an arc-shaped slot is provided at the bottom of the arc-shaped reinforcement shell, and a magnetic slot is provided at the bottom of the arc-shaped reinforcement shell, and the magnetic slot is connected to the arc-shaped slot.

[0020] Preferably, a connecting arc block is provided below the arc-shaped reinforcement shell, and the connecting arc block is fixedly installed on the outer wall of the lower shell of the grass trimmer head. An arc-shaped clamping block is fixedly installed on the top of the connecting arc block, and the arc-shaped clamping block is adapted to the arc-shaped clamping groove.

[0021] By providing an arc-shaped card slot and a magnetic slot, which are opened at the bottom of the arc-shaped reinforcement shell, the two are connected and used to cooperate with the connecting arc block and the arc-shaped card block and the connecting magnetic block thereon to achieve a tight connection and stability between the upper shell of the grass trimmer head and the lower shell of the grass trimmer head.

[0022] Preferably, a connecting magnetic block is fixedly installed on the outer wall of the arc-shaped clamping block, and the connecting magnetic block is attracted and connected to the magnetic groove.

[0023] A connecting magnetic block is provided, which is fixedly installed on the outer wall of the arc-shaped block and is connected to the magnetic groove by suction, thereby further enhancing the stability of the grass trimmer head.

[0024] The utility model provides a mowing head for a lawn mower, which has the following beneficial effects:

[0025] (1) The present invention realizes a firm installation between the grass trimming head assembly and the connecting main rod by providing a mounting collar, a mounting circular plate, a fixing circular plate and a threaded connection through a hexagonal bolt passing through a fixing hole, effectively preventing the grass trimming head from loosening or falling off during operation. The setting of the shaft protective shell protects the shaft from damage by the external environment and also enhances the durability of the grass trimming head. In combination with the upper shell and the lower shell of the grass trimming head, the internal structure of the grass trimming head is more compact and easy to maintain. Furthermore, the limit column and the adjustment pin provided by the spring facilitate the adjustment of the tightness of the grass cutting rotor, thereby ensuring its cutting effect under different grass conditions, thereby achieving the effect of improving the working efficiency and service life of the grass trimming head.

[0026] (2) The present invention forms a stable connection structure between the upper shell of the mowing head and the lower shell of the mowing head by providing an arc-shaped reinforcement shell, an arc-shaped slot and an arc-shaped block, and an attraction connection between the magnetic block and the magnetic slot, thereby simplifying the installation process and achieving the effect of improving the overall stability and durability of the mowing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is an exploded view of the structure of a mower head for a lawn mower according to the utility model;

[0029] Figure 3 This is a bottom view of the installation structure of a mowing head for a lawn mower according to the utility model;

[0030] Figure 4 The utility model is a bottom view of the reinforcing structure of a grass trimmer head for a lawn mower.

[0031] In the figure: 1 connecting main rod, 2 handrail, 3 anti-slip ring pad, 4 driving mechanism, 5 grass trimming head assembly, 51 mounting part, 511 mounting collar, 512 mounting circular plate, 513 fixing circular plate, 514 fixing hole, 515 hexagonal bolt, 516 rotating shaft protective shell, 517 grass trimming head upper shell, 518 grass trimming head lower shell, 519 limiting column, 5110 adjusting pin, 5111 grass cutting rotor, 5112 reinforcing rib, 52 reinforcement part, 521 arc-shaped reinforcing shell, 522 arc-shaped slot, 523 magnetic suction slot, 524 connecting arc-shaped block, 525 arc-shaped slot, 526 connecting magnetic suction block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0034] Example 1: A preferred embodiment of a mower head provided by the present invention is as follows: Figure 1-4 As shown: A mower head for a lawn mower, including a connecting main rod 1, an outer wall fixing sleeve of the connecting main rod 1 is provided with an armrest 2, the outer wall fixing sleeve of the connecting main rod 1 is provided with an anti-slip ring pad 3, and is located above the armrest 2, and a driving mechanism 4 is provided at the top of the connecting main rod 1; a mowing head assembly 5, the mowing head assembly 5 is arranged below the connecting main rod 1; the mowing head assembly 5 includes: an installation part 51, the installation part 51 is arranged below the connecting main rod 1; a reinforcement part 52, the reinforcement part 52 is arranged below the connecting main rod 1, and the reinforcement part 52 is located on the outside of the installation part 51.

[0035] The mounting portion 51 includes: a mounting collar 511, which is fixedly mounted on the bottom of the connecting main rod 1; a mounting circular plate 512 is fixedly mounted on the bottom of the mounting collar 511, a fixing circular plate 513 is provided below the mounting circular plate 512, and fixing holes 514 are equidistantly provided on the top circumference of the fixing circular plate 513, and the fixing holes 514 extend to the top of the fixing circular plate 513.

[0036] By providing a mounting collar 511 , it is fixedly mounted on the bottom of the connecting main rod 1 and serves as the basis of the mounting portion 51 .

[0037] A mounting circular plate 512 is provided and fixedly mounted on the bottom of the mounting collar 511 to further support and fix subsequent components.

[0038] A fixing circular plate 513 is provided below the mounting circular plate 512 , and fixing holes 514 are equidistantly provided on the top circumference thereof for tightly connecting with the mounting circular plate 512 and other components via hexagonal bolts 515 .

[0039] A hexagonal bolt 515 is threadedly connected to the interior of the fixing hole 514 , a shaft protection shell 516 is fixedly installed on the bottom of the fixed circular plate 513 , and a grass trimmer head upper shell 517 is fixedly installed on the bottom of the shaft protection shell 516 .

[0040] A shaft protection shell 516 is provided and fixedly mounted on the bottom of the fixed circular plate 513 to protect the shaft portion from damage.

[0041] The upper shell 517 of the grass trimmer head is fixedly mounted on the bottom of the shaft protection shell 516 and is one of the main components of the grass trimmer head.

[0042] A grass trimming head lower shell 518 is provided below the grass trimming head upper shell 517 , and a limiting column 519 is provided on the top of the inner wall of the grass trimming head upper shell 517 through a spring, and an adjusting pin 5110 is provided on one side of the limiting column 519 .

[0043] The lower shell 518 of the grass trimmer head is provided to cooperate with the upper shell 517 of the grass trimmer head to form the main structure of the grass trimmer head.

[0044] A limit column 519 is provided, which is arranged on the top of the inner wall of the upper shell 517 of the grass trimmer head through a spring, to limit the movement range of the adjustment pin 5110.

[0045] The outer wall of the adjusting pin 5110 is provided with grass cutting rotors 5111, and there are three groups of them. The top of the inner wall of the upper shell 517 of the grass trimming head is fixedly installed with reinforcing ribs 5112 at equal intervals around the circumference.

[0046] An adjusting pin 5110 is provided on one side of the limiting column 519 , and its outer wall is provided with three groups of grass-cutting rotors 5111 for rotating and cutting grass under the drive of the driving mechanism.

[0047] Reinforcing ribs 5112 are provided and fixedly mounted at equal intervals on the top circumference of the inner wall of the upper shell 517 of the mowing head to enhance the structural strength of the upper shell 517 of the mowing head.

[0048] The reinforcement part 52 includes: an arc-shaped reinforcement shell 521, which is fixedly installed on the outer wall of the upper shell 517 of the mowing head, and there are three groups of arc-shaped reinforcement shells 521; an arc-shaped slot 522 is opened at the bottom of the arc-shaped reinforcement shell 521, and a magnetic slot 523 is opened at the bottom of the arc-shaped reinforcement shell 521, and the magnetic slot 523 is connected to the arc-shaped slot 522.

[0049] Furthermore, this embodiment achieves a firm installation between the mowing head assembly and the connecting main rod by providing a mounting ring 511, a mounting circular plate 512, a fixing circular plate 513 and a threaded connection through the hexagonal bolt 515 passing through the fixing hole 514, thereby effectively preventing the mowing head from loosening or falling off during operation. The setting of the shaft protective shell 516 not only protects the shaft from damage from the external environment, but also enhances the durability of the mowing head. Together with the upper shell 517 of the mowing head and the lower shell 518 of the mowing head, the internal structure of the mowing head is more compact and easy to maintain. Furthermore, the limit column 519 and the adjustment pin 5110 set by the spring can facilitate the adjustment of the tightness of the grass cutting rotor 5111, thereby ensuring its cutting effect under different grass conditions.

[0050] Example 2: Based on Example 1, the present invention provides a preferred embodiment of a mower head for a lawn mower. Figure 1-4 As shown: the reinforcement part 52 includes: an arc-shaped reinforcement shell 521, which is fixedly installed on the outer wall of the upper shell 517 of the grass trimmer head, and there are three groups in total; an arc-shaped card slot 522 is opened at the bottom of the arc-shaped reinforcement shell 521, and a magnetic attraction slot 523 is opened at the bottom of the arc-shaped reinforcement shell 521, and the magnetic attraction slot 523 is connected to the arc-shaped card slot 522.

[0051] A connecting arc block 524 is provided below the arc reinforcing shell 521 , and the connecting arc block 524 is fixedly mounted on the outer wall of the lower shell 518 of the grass trimmer head. An arc clamping block 525 is fixedly mounted on the top of the connecting arc block 524 , and the arc clamping block 525 is adapted to the arc clamping slot 522 .

[0052] By providing an arc-shaped card slot 522 and a magnetic suction slot 523, which are opened at the bottom of the arc-shaped reinforcement shell 521, the two are connected and are used to cooperate with the connecting arc block 524 and the arc-shaped card block 525 and the connecting magnetic suction block 526 thereon to achieve a tight connection and stability between the upper shell 517 of the grass trimming head and the lower shell 518 of the grass trimming head.

[0053] A connecting magnetic block 526 is fixedly mounted on the outer wall of the arc-shaped clamping block 525 , and the connecting magnetic block 526 is attracted and connected to the magnetic groove 523 .

[0054] By providing a connecting magnetic block 526 , which is fixedly mounted on the outer wall of the arc-shaped clamping block 525 and is attracted and connected to the magnetic groove 523 , the stability of the grass trimmer head is further enhanced.

[0055] Furthermore, this embodiment forms a stable connection structure between the upper shell 517 of the grass trimmer head and the lower shell 518 of the grass trimmer head by providing an arc-shaped reinforcing shell 521, an arc-shaped slot 522 and an arc-shaped block 525, and an attraction connection between the magnetic block 526 and the magnetic slot 523, thereby simplifying the installation process and improving the overall stability and durability of the grass trimmer head.

[0056] When in use, first, the user holds the lawn mower by the armrest 2 and starts the driving mechanism 4. The power generated by the driving mechanism 4 is transmitted to the grass trimming head assembly 5 through the connecting main rod 1. In the installation part 51, the fixed circular plate 513 is tightly connected with the installation circular plate 512 and other components through the hexagonal bolt 515 to ensure the stability of the grass trimming head assembly 5. At the same time, the shaft protective shell 516 protects the shaft part from damage. Driven by the driving mechanism, the adjusting pin 5110 and the grass cutting rotor 5111 thereon start to rotate, and the sharp edge of the grass cutting rotor 5111 contacts the grass, cutting the grass. The presence of the reinforcing ribs 5112 enhances the structural strength of the upper shell 517 of the mowing head, enabling it to withstand greater mowing force. At the same time, the arc-shaped reinforcing shell 521 in the reinforced portion 52 further enhances the structural stability of the mowing head. The connecting arc block 524 and the arc-shaped clamping block 525 thereon are adapted to the arc-shaped clamping groove 522 to ensure a tight connection between the upper shell 517 of the mowing head and the lower shell 518 of the mowing head. The suction connection between the connecting magnetic block 526 and the magnetic suction groove 523 further enhances the stability of the mowing head to prevent it from loosening or falling off during use.

[0057] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A mower head for a lawn mower, comprising a connecting main rod (1), characterized in that: The outer wall fixing sleeve of the connecting main rod (1) is provided with an armrest (2), the outer wall fixing sleeve of the connecting main rod (1) is provided with an anti-slip ring pad (3) and is located above the armrest (2), and the top of the connecting main rod (1) is provided with a driving mechanism (4); A grass trimming head assembly (5), the grass trimming head assembly (5) being arranged below the connecting main rod (1); The mowing head assembly (5) comprises: An installation portion (51), the installation portion (51) being arranged below the connecting main rod (1); A reinforcement portion (52) is provided below the connecting main rod (1), and the reinforcement portion (52) is located outside the installation portion (51).

2. The lawn mower trimmer head according to claim 1, characterized in that: The installation part (51) includes: A mounting collar (511) fixedly mounted on the bottom of the connecting main rod (1); A mounting circular plate (512) is fixedly mounted on the bottom of the mounting collar (511), a fixed circular plate (513) is provided below the mounting circular plate (512), and fixing holes (514) are equidistantly provided on the top circumference of the fixed circular plate (513), and the fixing holes (514) extend to the top of the fixed circular plate (513).

3. The lawn mower trimmer head according to claim 2, characterized in that: A hexagonal bolt (515) is threadedly connected to the interior of the fixing hole (514), a rotating shaft protection shell (516) is fixedly mounted on the bottom of the fixing circular plate (513), and a grass trimming head upper shell (517) is fixedly mounted on the bottom of the rotating shaft protection shell (516).

4. The lawn mower trimmer head according to claim 3, characterized in that: A grass trimming head lower shell (518) is provided below the grass trimming head upper shell (517), and a limiting column (519) is provided on the top of the inner wall of the grass trimming head upper shell (517) via a spring, and an adjustment pin (5110) is provided on one side of the limiting column (519).

5. The lawn mower trimmer head according to claim 4, characterized in that: The outer wall of the regulating pin (5110) is provided with grass cutting rotating blades (5111), and there are three groups of them. The inner wall top of the upper shell (517) of the grass trimming head is fixedly provided with reinforcing ribs (5112) at equal intervals around the circumference.

6. The lawn mower trimmer head according to claim 1, characterized in that: The reinforcement portion (52) includes: Arc-shaped reinforcement shells (521), the arc-shaped reinforcement shells (521) are fixedly mounted on the outer wall of the upper shell (517) of the mowing head, and there are three sets of arc-shaped reinforcement shells; An arc-shaped clamping slot (522) is provided at the bottom of the arc-shaped reinforcement shell (521), and a magnetic attraction slot (523) is provided at the bottom of the arc-shaped reinforcement shell (521), and the magnetic attraction slot (523) is communicated with the arc-shaped clamping slot (522).

7. The lawn mower trimmer head according to claim 6, characterized in that: A connecting arc block (524) is provided below the arc-shaped reinforcement shell (521), and the connecting arc block (524) is fixedly mounted on the outer wall of the grass trimmer head lower shell (518). An arc-shaped clamping block (525) is fixedly mounted on the top of the connecting arc block (524), and the arc-shaped clamping block (525) is adapted to the arc-shaped clamping groove (522).

8. The lawn mower trimmer head according to claim 7, characterized in that: A connecting magnetic block (526) is fixedly mounted on the outer wall of the arc-shaped clamping block (525), and the connecting magnetic block (526) is attracted and connected to the magnetic groove (523).

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