Cutter-replaceable multifunctional mower

Abstract

The invention relates to a tool changing system of a multifunctional mower, which comprises a tool shaft, a deep groove ball bearing, a shaft sleeve, a bevel gear, a bevel gear flat key, a tool motor upper fixing block, a micro motor, a sliding bearing, a tool sliding block, a tool sliding bearing fixing block, a tool motor lower fixing block, a connecting rod, a tool outer sleeve, a blade, a tool inner sleeve, a tool fixing block and a rope sliding block, the mower is composed of a rope and other mechanisms of the mower. When the cutter is used for mowing, under the action of the motor, the whole cutter rest extends downwards until the blade is parallel to the ground, and meanwhile, the supporting frames on the two sides can position the blade at the position and lock the blade. When the rope is replaced, a tool changing button is pressed down, firstly, the whole tool rest is driven by the motor to be folded upwards to the two sides of the tool spindle, storage of the tool rest is completed, then the rope sliding block mechanism is retreated along a lead screw of the micro motor through the motor in the spindle, and the rope moves to the working position and is locked. The cutter and the rope need to be flexibly replaced according to different mowing scenes, and the defect that a traditional mower can only adapt to part of scenes is overcome.

Description

Technical Field

[0001] The present invention is applied to the field of lawn mowers, and in particular relates to a blade changing system for a multifunctional lawn mower. Background Art

[0002] The rural areas in the south are located in the hilly areas, which are suitable for the breeding of dairy cows, sheep, geese and other livestock and poultry. The animal husbandry has developed rapidly in the past 20 years, and the corresponding forage planting area has also been expanding. The varieties of forage grass planted now are mainly ryegrass and alfalfa. These varieties are tough and strong. When they are harvested manually with sickles, the blades become blunt in a short time. Farmers often bring sharpening bricks to the fields and sharpen them frequently, which leads to low work efficiency. Large-scale belt-driven mowers are difficult to operate in these areas. These geographical locations require relatively high conditions for belt-driven mowers. Complete sets of belt-driven mowers are not flexible enough, and the cost of operating large-scale complete sets of belt-driven mowers is relatively high. Moreover, forage grass is harvested many times in a growing period, and harvesting machinery suitable for small and medium-sized pastures is urgently needed. Therefore, we should find a suitable method as soon as possible to solve the difficulties of forage harvesting as soon as possible.

[0003] Using a small grass harvester for harvesting can reduce the heavy physical labor during grass harvesting and reduce the trampling of grass by workers when mowing, which is favored by workers. Compared with the damage to grass roots caused by workers mowing by hand, cutting with a small wheel-driven mower can make the cut grass of uniform length, the grass grows more vigorously, and is easy to bundle and transport, which brings great convenience to the remaining links. With the rapid rise of the grass industry, new opportunities have been brought to the development of grass mechanization. The market demand for double-blade new energy mowers that can freely switch ropes or blades according to the scene is large and has broad prospects. Summary of the invention

[0004] In view of the problem that the lawn mowers in the prior art have single functions and limited applicable scenarios, the present invention aims to provide a multifunctional lawn mower that can flexibly switch between rope and blade mowing modes according to different needs of mowing scenarios, so as to improve mowing efficiency and applicability.

[0005] To achieve the above purpose, the present invention provides a multifunctional lawn mower, including a tool spindle, a blade slider mechanism, an electronic control system, a rope slider mechanism and other components. The lawn mower integrates the rope and the blade on the tool spindle. When it is necessary to cut a bush with a relatively high hardness, the reciprocating motion of the blade slider is controlled by the electronic control system to achieve the lowering and storage of the blade driven by the connecting rod; at the same time, when it is necessary to cut a soft lawn with a relatively low hardness, a rope slider mechanism that can move up and down is designed in the tool spindle, and a nylon rope is passed through the slider mechanism to achieve the storage and release of the rope.

[0006] Furthermore, the blade slider mechanism includes a motor, a sliding bearing and a slider, etc. The slider can move up and down along the motor lead screw, and the electronic control system controls the reciprocating motion of the slider. The connecting rod enables the blade to be lowered for cutting and automatically stored after cutting is completed.

[0007] Furthermore, the rope slider mechanism includes a motor, a sliding bearing and a slider, etc. The slider can move up and down along the motor screw rod, and the electronic control system controls the reciprocating motion of the slider. The nylon rope passes through the slider and is fixedly connected to the slider, and the storage and release of the nylon rope are achieved by controlling the movement of the slider.

[0008] Furthermore, when disassembling and replacing the blade, first, loosen the nut used to fix the blade; second, remove the bolts and nuts originally used to fix the blade in place; finally, install the new blade in place and re-tighten the bolts and nuts to ensure its stability. This method simplifies the blade replacement process and improves maintenance efficiency.

[0009] Furthermore, when removing and replacing the rope, first, the old rope is completely pulled out of the device; then, the new rope is fed into the device, ensuring that it is correctly positioned. This replacement method does not require complicated tools or techniques, making the rope replacement process fast and convenient, thereby reducing maintenance time and costs.

[0010] Compared with traditional lawn mowers, the multifunctional lawn mower of the present invention has significant advantages such as low energy consumption, environmental protection, large cutting area, and high single cutting efficiency. It can meet the needs of different mowing scenes and improve mowing efficiency and applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 , Figure 2 Schematic diagram of a multifunctional lawn mower system with replaceable blades

[0012] Figure 3 This is a partial enlarged view of the replaceable blade multi-function lawn mower system

[0013] Figure 4 This is a schematic diagram of the assembly of the replaceable blade multifunctional lawn mower system on the lawn mower

[0014] 1-tool shaft, 2-deep groove ball bearing, 3-shaft sleeve, 4-bevel gear, 5-bevel gear flat key, 6-tool motor upper fixing block, 7-micro motor, 8-sliding bearing, 9-tool slider, 10-tool sliding bearing fixing block, 11-tool motor lower fixing block, 12-connecting rod, 13-tool outer sleeve, 14-blade, 15-tool inner sleeve, 16-tool fixing block, 17-rope slider, 18-rope, 19-frame. DETAILED DESCRIPTION

[0015] In order to more clearly describe the concept, technical solution and advantages of the present invention, the following specifically describes the implementation mode in conjunction with the accompanying drawings:

[0016] The tool changing system is located at the bottom of the lawn mower housing and consists of a tool shaft, a deep groove ball bearing, a shaft sleeve, a bevel gear, a bevel gear flat key, an upper fixing block of a tool motor, a micro motor, a sliding bearing, a tool slider, a tool sliding bearing fixing block, a lower fixing block of a tool motor, a connecting rod, a tool outer sleeve, a blade, a tool inner sleeve, a tool fixing block, a rope slider, and a rope.

[0017] When the mower drives to an open area with relatively tall and dense grass, the mower collects data about the surrounding grass, such as grass height and density, and transmits it to the mower's intelligent control system. After analysis and judgment, if the scene conditions for mowing with blades are met, the operator starts the blade working mode switching process. At this time, the blade assembly originally stored in a specific position will rotate through the motor-driven screw rod, and the tool slider will move downward to the predetermined position and lock together with the sliding bearing. At the same time, the connecting rod drives the blade to a position parallel to the ground. The blade can quickly and efficiently cut off tall and dense weeds with the powerful cutting force generated by high-speed rotation, meeting the needs of large-area, high-intensity mowing operations.

[0018] When the cutter is mowing, the motor extends the entire cutter holder downward until the blade is parallel to the ground, and the support frames on both sides position and lock the blade in this position. When changing the rope, press the cutter change button to first retract the entire cutter holder upward to both sides of the cutter spindle driven by the motor, completing the storage of the cutter holder, and then the motor inside the shaft withdraws the rope slider mechanism along the screw rod, so that the rope moves to the working position and is locked.

[0019] When the mower enters a narrow area with complex terrain, or the grass is short, thin and distributed at the edge of the flower bed, corners and other fine areas, the mower will start the rope working mode after analyzing and confirming that it meets the requirements of using a rope to mow the grass. The blade is retracted to the tool rod in the opposite direction of the above starting method. The rope, the rope slider and the sliding bearing are fixed by the rotation of the motor and extended downward along the screw rod to the predetermined position and then fixed. Under high-speed rotation, the centrifugal force generated by its high-speed rotation is used to easily cut off the thin weeds. This method can not only effectively avoid unnecessary damage to the surrounding environment in narrow areas, but also accurately clean the weeds in fine areas, ensuring the mowing effect while improving the flexibility and adaptability of mowing operations.

[0020] To ensure that the mower can accurately and quickly switch mowing tools in different scenarios, the mower needs to automatically identify the surrounding grass environment and replace the blade and rope in time to improve cutting efficiency.

[0021] The present invention provides a concept and method for a multifunctional lawn mower with replaceable blades. There are many methods and ways to implement the technical solution. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention. All components not specified in this embodiment can be implemented by existing technologies.

Claims

1. An automatic tool changing system for a lawn mower, comprising a tool shaft (1), a deep groove ball bearing (2), a shaft sleeve (3), a bevel gear (4), a bevel gear flat key (5), a tool motor upper fixing block (6), a micro motor (7), a sliding bearing (8), a tool slider (9), a tool sliding bearing fixing block (10), a tool motor lower fixing block (11), a connecting rod (12), a tool outer sleeve (13), a blade (14), a tool inner sleeve (15), a tool fixing block (16), a rope slider (17), a rope (18) and a frame (19).

2. The automatic blade changing system for a lawn mower according to claim 1, characterized in that The tool changing component is composed of a tool motor upper fixing block (6), a micro motor (7), a sliding bearing (8), a tool slider (9), a tool sliding bearing fixing block (10), a tool motor lower fixing block (11), a connecting rod (12), a tool outer sleeve (13), a blade (14), a tool inner sleeve (15), a tool fixing block (16), a rope slider (17), and a rope (18), and the tool component (7-16) and the rope component (7, 8, 17-18) are respectively located at the lower outer and inner positions of the tool shaft (1).

3. The automatic blade changing system of the lawn mower according to claim 1, characterized in that The deep groove ball bearing (2) is fixedly connected to the tool shaft (1) through an interference fit; the tool shaft (1) is rotatably arranged in the frame (19); the bevel gear (4) is connected to the tool shaft (1) through a bevel gear flat key (5) to achieve 360-degree rotation of the tool shaft.

4. The automatic blade changing system for a lawn mower according to claim 1, characterized in that The tool motor upper fixing block (6), the tool slide block (9), the tool sliding bearing fixing block (10), the tool motor lower fixing block (11), the connecting rod (12), the tool outer sleeve (13), the blade (14), the tool inner sleeve (15), and the tool fixing block (16) are fixedly connected by bolts.

5. The automatic blade changing system for a lawn mower according to claim 1, characterized in that The tool fixing block (16) is welded and fixed on the bottom of the tool shaft (1).

6. The automatic blade changing system for a lawn mower according to claim 1, characterized in that The blade (14) is connected to the connecting rod (12) through a tool outer sleeve (13) by bolts, the blade (14) and the tool shaft (1) are connected to the tool inner sleeve (15) by bolts, and the tool inner sleeve (15) is connected and fixed to the tool fixing block (16).

7. The automatic blade changing system for a lawn mower according to claim 1, characterized in that The blade slider (9) is located at a lower position outside the tool shaft and slides between the micro motor (7) and the fixed block (6) on the tool motor. The sliding distance of the blade slider (9) is half of the total length of the lower part of the tool shaft.

Images