Lawn mower with adjustable lifting and self-adaptive floating

Abstract

The utility model discloses a kind of mowing machines that can be lifted and adjusted and self-adaptive floating, it includes main frame, weeding mechanism and adjusting mechanism;Weeding mechanism includes lifting cover, weeding knife and oil engine;Adjusting mechanism includes two groups of connecting rod mechanism of left, right layout;Each connecting rod mechanism includes two adjusting frame and a synchronous bar;Two groups of synchronous connecting rod mechanism connect same cross bar;Electric push rod is connected between cross bar and main frame;Guide sleeve is installed on main frame and slidably cooperates with guide rod;Spring is in series with guide rod;Adjusting frame is connected lifting cover by suspension rod;Suspension rod and adjusting frame are connected by ball hinge;Suspension rod can rotate and slide relative to adjusting frame.In the utility model, adjusting mechanism can not only adjust the height of weeding mechanism, but also self-adaptive floating upwards under the condition that ground is uneven, prevent and ground hard contact result in damage, spring can play the role of buffering vibration absorption in self-adaptive floating.

Description

Technical Field

[0001] This utility model relates to the field of lawn mower technology, and in particular to a lawn mower with adjustable lifting and adaptive floating capability. Background Technology

[0002] As a core piece of equipment in modern agricultural production and garden maintenance, lawn mowers play an irreplaceable role in improving vegetation management efficiency. By replacing traditional manual weeding with mechanized cutting, their efficiency can be more than 16 times that of manual labor, significantly reducing labor costs.

[0003] To meet the needs of mowing and retain grass of varying lengths, lawnmowers require a height adjustment mechanism. In the prior art, patent CN 111183786 A provides a wheeled, height-adjustable blade lawnmower with two sets of adjustment devices distributed on both sides of the mowing device. Four connecting rods support the mowing device, and the height is adjusted by rotating these connecting rods. However, this patented solution lacks adaptability to low terrain. The rigid structure is prone to hard collisions with the ground, damaging the machine and causing uneven cutting surfaces due to grass stem displacement, potentially resulting in missed cuts. Furthermore, this patented solution includes a frame between the chassis and the blade, increasing the overall weight and size of the machine. Additionally, the blade in this patented solution has a closed structure on all four sides, lacking a flexible design for the weed-blocking structure, making it difficult to balance airflow and weed guidance. Summary of the Invention

[0004] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides a lawnmower with adjustable height and adaptive floating capability, which aims to enable the lawnmower mechanism to adapt to the terrain and make the structure simple and lightweight.

[0005] Technical solution: To achieve the above objectives, the present invention provides a lawnmower with adjustable height and adaptive floating capability, which includes a main frame and a weeding mechanism, and also includes an adjustment mechanism for driving the weeding mechanism to rise and fall relative to the main frame. The main frame has a wheel mechanism and a battery; the weeding mechanism includes a lifting cover and multiple weeding blades installed inside the lifting cover. A fuel engine is installed above the lifting hood, and the fuel engine is connected to all the weeding blades. Specifically, the fuel engine establishes a transmission relationship with all the weeding blades through a transmission belt assembly. The adjustment mechanism includes two sets of linkage mechanisms arranged on the left and right; each set of linkage mechanisms includes two adjustment frames rotatably connected to the main frame, and a synchronizing rod connecting the two adjustment frames. The four rotation centers formed between the two adjustment frames, the synchronizing rod, and the main frame constitute the four corner points of a parallelogram; the two synchronizing rods corresponding to the two sets of linkage mechanisms are connected to the same first crossbar; the adjustment mechanism also includes an electric push rod connecting the first crossbar and the main frame. The electric push rod connects the middle part of the first crossbar to the middle part of the main frame, and the battery powers the electric push rod. A guide rod is installed on the lifting cover; a guide sleeve that slides with the guide rod is installed on the main frame; a spring is threaded on the guide rod, and the spring applies an upward force to the lifting cover; Each of the adjustment frames is connected to the lifting cover via a suspension rod; the suspension rod is connected to the adjustment frame via a ball joint; the suspension rod is capable of rotating and sliding relative to the adjustment frame.

[0006] Furthermore, a baffle is installed on the top of the guide rod, the spring is located on the upper side of the guide sleeve, and the upper end of the spring abuts against the baffle.

[0007] Furthermore, the adjusting frame is V-shaped, with the first end connected to the synchronizing rod and the second end having two forked plates; the second end is equipped with a pin that is rotatably connected to both plates, the pin having a through hole located between the two plates, the suspension rod being slidably installed relative to the through hole, and having an adjusting nut located above the pin.

[0008] During operation, the electric push rod can be controlled to adjust the working height of the weeding mechanism as needed. Because the suspension rod can rotate and slide relative to the adjustment frame, and is equipped with a guide rod and spring, the adjusting nut contacts the pin during normal operation, keeping the lifting cover in a suspended state. When the working height is low and the ground is uneven, the ground will lift the weeding mechanism upwards to achieve adaptive adjustment. Compared with existing technologies, the solution presented in this application features a simple structure and lightweight design.

[0009] Furthermore, the front end of the main frame has two second crossbars, and the main frame also has two side frames arranged symmetrically on the left and right; the front end of each side frame has two lower extensions that connect to the two second crossbars respectively, so that the side frame is F-shaped when viewed from the side. The walking wheel mechanism includes two driving wheels and two driven wheels. The two driven wheels are mounted at both ends of a crossbeam. The crossbeam is located between two second crossbars, and the middle part of the crossbeam is rotatably connected relative to the second crossbars.

[0010] The two drive wheels are connected to motors, and the motors are connected to batteries.

[0011] Furthermore, the lifting cover has downward-facing flanges on its front and both sides, and a grass-blocking mechanism on its rear side; the grass-blocking mechanism includes a horizontal shaft and multiple chain buckle groups hanging from the horizontal shaft, with adjacent chain buckle groups connected by at least one horizontal chain buckle. Both the chain buckle groups and the horizontal chain buckles are made of metal.

[0012] Furthermore, the horizontal axis has annular grooves equidistantly arranged along its axial direction; the uppermost chain link of each chain link assembly is embedded in one of the annular grooves, thereby preventing the chain link assembly from shifting laterally relative to the horizontal axis.

[0013] Furthermore, the lifting cover has a blade groove corresponding to each of the weeding blades, and the rear of each blade groove is open, so that the grass cut by the weeding blades is discharged backward and hits the weed blocking mechanism.

[0014] Furthermore, a generator is also installed on the lifting hood. The fuel engine is connected to the generator and all the weeding blades via a drive belt assembly. The generator is electrically connected to the storage battery. When the lawnmower is not working, the storage battery can be charged independently. When the lawnmower is working and the battery is low on power, the generator can replenish the battery's power, thus preventing low battery power from affecting the continuity of operation.

[0015] Beneficial effects: The adjustable lifting and self-adaptive floating lawnmower of this invention has the following beneficial effects: (1) In this utility model, by setting an elastic mechanism consisting of a guide rod, a guide sleeve and a spring, and by setting a multi-directional suspension mechanism with a suspension rod as the core, the adjustment mechanism can not only adjust the height of the weeding mechanism, but also adaptively float upwards when the ground is uneven, preventing damage caused by hard contact with the ground. The spring can play a buffering and shock absorption role in adaptive floating, reducing mechanical vibration.

[0016] (2) The installation structure of the driven wheels enables the two driven wheels to adapt to the terrain and adjust their height accordingly, so as to achieve contour movement on the ground. The part between the two lower extensions at the front end of the two F-shaped side frames can serve as a rotation limit for the crossbeam, preventing the crossbeam from rotating too much when encountering potholes.

[0017] (3) The grass-blocking mechanism composed of chain buckles is wear-resistant and has a long service life. The horizontal chain buckles connect all the chain buckle groups laterally, which can avoid the swing amplitude of local chain buckle groups being subjected to dense impacts and does not affect the airflow. The metal chain buckles are relatively heavy, and the grass-blocking mechanism as a whole can be deformed as needed, resulting in a good grass-blocking effect. Attached Figure Description

[0018] Figure 1A side view of a lawnmower with adjustable height and adaptive floating mechanism; Figure 2 A first three-dimensional structural diagram of a lawnmower with adjustable height and adaptive floating capability; Figure 3 A second three-dimensional structural diagram of a lawnmower with adjustable height and adaptive floating capability; Figure 4 for Figure 3 Enlarged structural diagram of section B; Figure 5 for Figure 2 Enlarged structural diagram of section A; Figure 6 This is a structural diagram of the transmission belt assembly.

[0019] In the diagram: 1-Main frame; 11-Guide sleeve; 1a-Second crossbar; 1b-Side frame; 1c-Lower extension; 2-Weeding mechanism; 21-Lifting cover; 21a-Blade groove; 22-Weeding blade; 23-Guide rod; 24-Spring; 25-Weed blocking mechanism; 251-Horizontal shaft; 25a-Ring groove; 252-Chain buckle assembly; 253-Horizontal chain buckle; 26-Baffle; 27-Pin shaft; 28-Adjusting nut; 3-Adjusting mechanism; 31-Adjusting frame; 32-Synchronizing rod; 33-First crossbar; 34-Electric push rod; 35-Suspension rod; 36-Spherical hinge; 4-Battery; 5-Fuel engine; 6-Generator; 7-Drive wheel; 8-Driven wheel; 9-Crossbeam; 10-Drive belt assembly; 20-Generator; 30-Motor. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figures 1 to 3The illustrated adjustable and adaptive floating lawnmower includes a main frame 1 and a weeding mechanism 2, and an adjustment mechanism 3 for driving the weeding mechanism 2 to rise and fall relative to the main frame 1. The main frame 1 has a wheel mechanism and a battery 4. The weeding mechanism 2 includes a lifting cover 21 and multiple weeding blades 22 installed within the lifting cover 21. A fuel engine 5 is mounted above the lifting cover 21, and the fuel engine 5 is driven by all the weeding blades 22. Specifically, the fuel engine 5 establishes a transmission relationship with all the weeding blades 22 through a transmission belt assembly 10. The adjustment mechanism 3 includes left and right configurations. Two sets of linkage mechanisms; each set of linkage mechanisms includes two adjusting frames 31 rotatably connected to the main frame 1, and a synchronizing rod 32 connecting the two adjusting frames 31. The four rotation centers formed between the two adjusting frames 31, the synchronizing rod 32, and the main frame 1 constitute the four corner points of a parallelogram. The two synchronizing rods 32 corresponding to the two sets of linkage mechanisms are connected to the same first crossbar 33. The adjusting mechanism 3 also includes an electric push rod 34 connecting the first crossbar 33 and the main frame 1. The electric push rod 34 connects the middle part of the first crossbar 33 and the middle part of the main frame 1. The battery 4 supplies power to the electric push rod 34.

[0022] like Figure 4 As shown, a guide rod 23 is installed on the lifting cover 21; a guide sleeve 11 that slides with the guide rod 23 is installed on the main frame 1; a spring 24 is threaded onto the guide rod 23, and the spring 24 applies an upward force to the lifting cover 21; each of the adjusting frames 31 is connected to the lifting cover 21 through a suspension rod 35; the suspension rod 35 is connected to the adjusting frame 31 through a ball joint 36; the suspension rod 35 can rotate and slide relative to the adjusting frame 31.

[0023] Specifically, a baffle 26 is installed on the top of the guide rod 23, the spring 24 is located on the upper side of the guide sleeve 11, and the upper end of the spring 24 abuts against the baffle 26.

[0024] The adjusting frame 31 is V-shaped, with the first end connected to the synchronizing rod 32 and the second end having two forked plates. The second end is equipped with a pin 27 that is rotatably connected to both plates. The pin 27 has a through hole located between the two plates. The suspension rod 35 is slidably installed relative to the through hole and has an adjusting nut 28 located above the pin 27.

[0025] During operation, the electric push rod 34 can be controlled to adjust the working height of the weeding mechanism 2 as needed. Since the suspension rod 35 can rotate and slide relative to the adjusting frame 31, and is equipped with a guide rod 23 and a spring 24, during normal operation, the adjusting nut 28 contacts the pin 27, keeping the lifting cover 21 in a suspended state. When the working height is low and the ground is uneven, the ground will lift the weeding mechanism 2 upwards to achieve adaptive adjustment. Compared with the prior art, the solution of this application has the characteristics of simple structure and lightweight. By changing the position of the adjusting nut 28 on the guide rod 23, the height adjustment range of the weeding mechanism 2 can be changed.

[0026] In this utility model, by setting an elastic mechanism consisting of a guide rod 23, a guide sleeve 11 and a spring 24, and by setting a multi-directional suspension mechanism with a suspension rod 35 as the core, the adjustment mechanism 3 can not only adjust the height of the weeding mechanism 2, but also adaptively float upwards when the ground is uneven, preventing damage caused by hard contact with the ground. The spring 24 can play a buffering and shock absorption role in adaptive floating, reducing mechanical vibration.

[0027] Preferably, such as Figure 2 and Figure 3 As shown, the front end of the main frame 1 has two second crossbars 1a, and the main frame 1 also has two side frames 1b arranged symmetrically on the left and right; the front end of each side frame 1b has two lower extensions 1c that are respectively connected to the two second crossbars 1a, so that the side frame 1b is F-shaped when viewed from the side; the traveling wheel mechanism includes two driving wheels 7 and two driven wheels 8, the two driven wheels 8 are installed at both ends of a crossbeam 9, the crossbeam 9 is located between the two second crossbars 1a, and the middle part of the crossbeam 9 is rotatably connected relative to the second crossbars 1a.

[0028] The two drive wheels 7 are connected to the motor 30, and the motor 30 is connected to the battery 4.

[0029] The installation structure of the driven wheels 8 allows the two driven wheels 8 to adapt to the terrain and adjust their height accordingly, achieving contour-following motion on the ground. The part between the two lower extensions at the front end of the two F-shaped side frames 1b can act as a rotation limit for the crossbeam 9, preventing the crossbeam 9 from rotating too much when encountering potholes.

[0030] Preferably, such as Figure 2 As shown, the lifting cover 21 has downward-facing flanges on its front and both sides, and a grass-blocking mechanism 25 on its rear side; Figure 5 As shown, the grass-blocking mechanism 25 includes a horizontal shaft 251 and a plurality of chain buckle groups 252 hanging from the horizontal shaft 251. Adjacent chain buckle groups 252 are connected by at least one horizontal chain buckle 253. Both the chain buckle groups 252 and the horizontal chain buckles 253 are made of metal.

[0031] Preferably, the horizontal axis 251 has annular grooves 25a equidistantly arranged in its axial direction; the uppermost chain buckle of each chain buckle group 252 is embedded in one of the annular grooves 25a, which can prevent the chain buckle group 252 from shifting laterally relative to the horizontal axis 251.

[0032] Preferably, the lifting cover 21 has a blade groove 21a corresponding to each of the weeding blades 22, and the rear of each blade groove 21a is open, so that the grass cut by the weeding blades 22 is discharged backward and hits the weed blocking mechanism 25.

[0033] In the above structure, the grass-blocking mechanism 25 composed of chain buckles is wear-resistant and has a long service life. The horizontally placed chain buckle 253 connects all the chain buckle groups 252 laterally, which can avoid the swing amplitude of local chain buckle groups 252 being subjected to dense impacts, and does not affect the airflow. The metal chain buckles are relatively heavy, and the grass-blocking mechanism 25 as a whole can be deformed as needed, resulting in a good grass-blocking effect.

[0034] Preferably, a generator 20 is also installed on the lifting cover 21, such as... Figure 6 As shown, the fuel engine 5 is driven by the generator 20 and all the weeding blades 22 via a drive belt assembly 10. The generator 20 is electrically connected to the battery 4. When the lawnmower is not working, the battery 4 can be charged independently. When the lawnmower is working and the battery 4 is low on power, the generator 6 can replenish the battery 4, thus preventing the low battery 4 from affecting the continuity of operation.

[0035] In addition, the two sets of batteries 4 are positioned on the left and right sides of the rear end of the main frame 1, and the electric push rod 34 is positioned between the two sets of batteries 4. The electric push rod 34 and the motor 30 are respectively connected to the control system through a controller. The control system can adjust the speed of the motor 30 and change the extension and retraction of the electric push rod 34 based on control commands.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lawnmower with adjustable height and adaptive floating capability, comprising a main frame (1) and a weeding mechanism (2), and further comprising an adjustment mechanism (3) for driving the weeding mechanism (2) to rise and fall relative to the main frame (1). The main frame (1) has a walking wheel mechanism and a storage battery (4); the weeding mechanism (2) includes a lifting cover (21) and a weeding blade (22) installed in the lifting cover (21). A fuel engine (5) is installed above the lifting cover (21), and the fuel engine (5) is driven by the weeding blade (22). Its features are: The adjustment mechanism (3) includes two sets of linkage mechanisms arranged on the left and right; each set of linkage mechanisms includes two adjustment frames (31) rotatably connected to the main frame (1), and a synchronizing rod (32) connecting the two adjustment frames (31); the two synchronizing rods (32) corresponding to the two sets of linkage mechanisms are connected to the same first crossbar (33); the adjustment mechanism (3) also includes an electric push rod (34) connecting the first crossbar (33) and the main frame (1); A guide rod (23) is installed on the lifting cover (21); a guide sleeve (11) that slides with the guide rod (23) is installed on the main frame (1); a spring (24) is threaded on the guide rod (23), and the spring (24) applies an upward force to the lifting cover (21); Each of the adjustment frames (31) is connected to the lifting cover (21) by a suspension rod (35); the suspension rod (35) is connected to the adjustment frame (31) by a ball joint (36); the suspension rod (35) is rotatable and slidable relative to the adjustment frame (31).

2. The lawnmower with adjustable height and adaptive floating capability according to claim 1, characterized in that, A baffle (26) is installed on the top of the guide rod (23), and the spring (24) is located on the upper side of the guide sleeve (11), with the upper end of the spring (24) abutting against the baffle (26).

3. The lawnmower with adjustable height and adaptive floating capability according to claim 1, characterized in that, The adjusting frame (31) is V-shaped. At its two ends, the first end is connected to the synchronizing rod (32), and the second end has two forked plates. The second end is equipped with a pin (27) that is rotatably connected to both plates. The pin (27) has a through hole located between the two plates. The suspension rod (35) is slidably installed relative to the through hole and has an adjusting nut (28) located above the pin (27).

4. The lawnmower with adjustable height and adaptive floating capability according to claim 1, characterized in that, The front end of the main frame (1) has two second crossbars (1a), and the main frame (1) also has two side frames (1b) arranged symmetrically on the left and right; the front end of each side frame (1b) has two lower extensions that connect to the two second crossbars (1a) respectively, so that the side frame (1b) is F-shaped when viewed from the side. The walking wheel mechanism includes two driving wheels (7) and two driven wheels (8). The two driven wheels (8) are installed at both ends of a crossbeam (9). The crossbeam (9) is located between two second crossbars (1a), and the middle part of the crossbeam (9) is rotatably connected relative to the second crossbars (1a).

5. The lawnmower with adjustable height and adaptive floating capability according to claim 4, characterized in that, The lifting cover (21) has downward-facing flanges on the front and both sides, and the rear side of the lifting cover (21) has a grass-blocking mechanism (25); the grass-blocking mechanism (25) includes a horizontal shaft (251) and a plurality of chain buckle groups (252) hanging from the horizontal shaft (251), and adjacent chain buckle groups (252) are connected by at least one horizontal chain buckle (253).

6. The lawnmower with adjustable height and adaptive floating capability according to claim 5, characterized in that, The transverse axis (251) has annular grooves (25a) equidistantly arranged in its axial direction; the uppermost chain of each chain link group (252) is embedded in one of the annular grooves (25a).

7. The lawnmower with adjustable height and adaptive floating capability according to claim 5, characterized in that, The lifting cover (21) has a blade groove (21a) corresponding to each of the weeding blades (22), and the rear of each blade groove (21a) is open.

8. The lawnmower with adjustable height and adaptive floating capability according to claim 1, characterized in that, A generator (20) is also installed on the lifting cover (21). The fuel engine (5) is driven by the generator (20) and all the weeding blades (22) through the transmission belt assembly (10). The generator (20) is electrically connected to the battery (4).

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