Cutter head height adjusting device for mower

Abstract

The utility model provides a cutter head height adjusting device for a mower, which relates to the technical field of mower cutter head lifting, and comprises a base and a mower frame body, and further comprises four connecting plates with boomerang-shaped main bodies, two cross rods, two mounting seats and two electric telescopic pieces, the device can automatically complete height adjustment of the cutter head so as to carry out mowing processing flows of different heights, meanwhile, the device is simple in structure and convenient to arrange on the base, the maintenance and replacement cost after damage is obviously reduced, the total manufacturing cost of the mower is reduced, in addition, the device does not occupy too much space of the base after being installed, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting disc lifting for lawn mowers, in particular to a cutting disc height adjustment device for lawn mowers. Background Art

[0002] A lawn mower is a mechanical tool used to trim lawns or vegetation. Currently, lawn mowers are fully automated, significantly reducing the time it takes to mow lawns. They are widely used in household and agricultural applications.

[0003] The existing lawn mower has a cutter and a drive assembly for driving the cutter movement on the base. During the mowing process, the cutter needs to be raised and lowered together with the base to adjust the mowing height. Currently, a worm gear elevator is generally set between the base and the lawn mower frame to realize the lifting process of the cutter disc. However, the cost of the worm gear elevator is relatively high. How to realize the automatic lifting of the cutter disc while reducing the cost is an urgent problem to be solved. Utility Model Content

[0004] The purpose of the present invention is to solve the problems raised in the above background technology, and then proposes a cutter disc height adjustment device for a lawn mower.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A blade height adjustment device for a lawn mower comprises a base and a lawn mower frame, four boomerang-shaped connecting plates, two cross bars, two mounting seats and two electric telescopic parts.

[0007] One end of the connecting plate is rotatably connected to the base, and the bending portion of the connecting plate is rotatably connected to the mower frame;

[0008] The connecting plates are grouped in pairs and are symmetrically distributed about the base, and the other ends of the two connecting plates in a group are rotatably connected to the two ends of a crossbar respectively;

[0009] The mounting seat is provided on the crossbar;

[0010] The two electric telescopic members are respectively rotatably connected to the frame of the lawn mower, and the retraction rod of each electric telescopic member is respectively rotatably connected to a mounting seat.

[0011] Furthermore, the electric telescopic member is an electric push rod.

[0012] Furthermore, a distance sensor electrically connected to the electric telescopic member is provided on the base.

[0013] The above solution can detect the height difference between the blade and the ground in real time through the distance sensor, thereby avoiding uneven mowing effects caused by too high or too low cutting height.

[0014] Furthermore, a foam board is movably provided on the outer side of the base.

[0015] The above solution can reduce the damage caused by the base colliding with obstacles in the grass through the foam board, thereby extending the service life of the base and the foam board is low in cost.

[0016] Furthermore, one of the electric telescopic parts is arranged upright, and the other electric telescopic part is arranged laterally.

[0017] Furthermore, the connecting plate, cross bar and mounting seat are all made of stainless steel.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] Compared with the existing technology, this device can automatically adjust the height of the blade to perform mowing processes at different heights. At the same time, the device has a simple structure and is easy to install on the base. The maintenance and replacement costs after damage are significantly reduced, thereby reducing the total manufacturing cost of the lawn mower. In addition, it does not take up too much space on the base after installation, and has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of the part marked A;

[0022] Reference numerals:

[0023] 1. Base; 2. Lawn mower frame; 3. Connecting plate; 4. Crossbar; 5. Mounting bracket; 6. Electric push rod. DETAILED DESCRIPTION

[0024] 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 work are within the scope of protection of the present invention. The present invention is further described in conjunction with the drawings and embodiments:

[0025] like Figure 1 and Figure 2As shown, a blade height adjustment device for a lawn mower includes a base 1 and a lawn mower frame 2, as well as four boomerang-shaped connecting plates 3, two cross bars 4, two mounting seats 5 and two electric telescopic parts. In further refinement of the scheme, the connecting plates 3, cross bars 4 and mounting seats 5 are all made of stainless steel.

[0026] One end of the connecting plate 3 is rotatably connected to the base 1 and the bending portion of the connecting plate 3 is rotatably connected to the mower frame 2;

[0027] The connecting plates 3 are grouped in pairs and are symmetrically distributed about the base 1. The other ends of the two connecting plates 3 in a group are rotatably connected to the two ends of a crossbar 4 respectively.

[0028] The mounting seat 5 is provided on the crossbar 4;

[0029] The two electric telescopic parts are respectively connected to the lawn mower frame 2, and the retraction rod of each electric telescopic part is respectively connected to a mounting seat 5. Specifically, the electric telescopic parts are electric push rods 6, and one of the electric telescopic parts is vertically arranged and the other electric telescopic part is sideways arranged.

[0030] It should be noted that the two electric telescopic members are electrically connected to the controller respectively and operate synchronously, and the controller is not shown in the figure.

[0031] The workflow of this utility model:

[0032] Initially, the cutting height of the cutter is determined. When the cutting height needs to be adjusted, the controller controls the two electric telescopic parts to extend and retract synchronously and the two cross bars 4 to move horizontally synchronously.

[0033] (1) When the electric telescopic member is extended, the connecting plate 3 rotates counterclockwise along the bend, thereby lowering the height of the tool;

[0034] (2) When the electric telescopic member contracts, the connecting plate 3 rotates clockwise along the bend, thereby increasing the height of the tool;

[0035] The four connecting plates 3 are respectively installed on the outer edges of the base 1 so as not to occupy too much space of the base 1 and do not interfere with other parts. The layout of the device is convenient and the maintenance and replacement cost is low if damaged. At the same time, the upper and lower limits of the height adjustment of the cutter are effectively defined, and the height adjustment of the cutter is automatically completed to meet the needs of mowing grass at different heights.

[0036] It should be noted that, due to the limited installation space inside the lawn mower frame 2, the present device has one electric push rod installed vertically and the other electric push rod installed sideways. The reason for using the electric push rod as the electric telescopic member is that the electric push rod has a lower cost.

[0037] Compared with the existing technology, this device can automatically adjust the height of the blade to perform mowing processes at different heights. At the same time, the device has a simple structure and is easy to install on the base 1. The maintenance and replacement costs after damage are significantly reduced, thereby reducing the total manufacturing cost of the lawn mower. In addition, after installation, it does not occupy too much space on the base 1 and has a good use effect.

[0038] In some embodiments, a distance sensor electrically connected to the electric telescopic member is provided on the base 1, and the distance sensor is not shown in the figure; this embodiment can detect the height difference between the blade disc and the ground in real time through the distance sensor, thereby avoiding uneven mowing effects caused by too high or too low cutting heights.

[0039] In other embodiments, a foam board is movably provided on the outer side of the base 1, which is not shown in the figure. This embodiment can reduce the damage to the base 1 after colliding with obstacles in the grass through the foam board, thereby extending the service life of the base 1 and the foam board is low in cost.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A cutter disc height adjustment device for a lawn mower, comprising a base (1) and a lawn mower frame (2), characterized in that: It also includes four boomerang-shaped connecting plates (3), two cross bars (4), two mounting seats (5) and two electric telescopic parts. One end of the connecting plate (3) is rotatably connected to the base (1), and the bent portion of the connecting plate (3) is rotatably connected to the mower frame (2); The connecting plates (3) are arranged in pairs in a group and are symmetrically distributed about the base (1), and the other ends of the two connecting plates (3) in a group are respectively rotatably connected to the two ends of a crossbar (4); The mounting seat (5) is arranged on the crossbar (4); The two electric telescopic members are respectively rotatably connected to the mower frame (2), and the retraction rod of each electric telescopic member is respectively rotatably connected to a mounting seat (5).

2. The cutter disc height adjustment device for a lawn mower according to claim 1, characterized in that: The electric telescopic member is an electric push rod (6).

3. The cutter head height adjustment device for a lawn mower according to claim 2, characterized in that: The base (1) is provided with a distance sensor electrically connected to the electric telescopic member.

4. The cutter disc height adjustment device for a lawn mower according to claim 1, characterized in that: A foam plate is movably provided on the outer side of the base (1).

5. The cutter head height adjustment device for a lawn mower according to claim 2, characterized in that: One of the electric telescopic parts is arranged vertically, and the other electric telescopic part is arranged laterally.

6. The cutter head height adjustment device for a lawn mower according to claim 1, characterized in that: The connecting plate (3), the crossbar (4) and the mounting seat (5) are all made of stainless steel.

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