A mower cutterhead lifting device based on a parallel four-bar mechanism

Abstract

The utility model discloses a orchard machinery technical field's mower cutterhead lifting device based on parallel four bar mechanism, including bottom plate and mounting panel, the mounting panel is located bottom plate's upside, this mower cutterhead lifting device based on parallel four bar mechanism, the structure design is reasonable, through the controller and starts first motor, makes first motor drive double -end screw rod and rotates, and then drives movable seat and removes, and then through second rotation rod drive second lower pole and second upper pole rotation and remove, through the linkage and drive first lower pole and first upper pole rotation and remove, and drive mounting seat and double -end screw rod remove, double -end screw rod and movable seat synchronous motion, thereby drive mounting panel and remove vertically and adjust height, improved adjustable height, through movable seat drive second lower pole and second upper pole directional rotation and remove to ensure controllability of its movement track, improved the stability when adjusting.

Description

Technical Field

[0001] This utility model relates to the field of orchard machinery technology, specifically to a lawnmower blade lifting device based on a parallel four-bar linkage. Background Technology

[0002] With the rapid development of my country's orchard industry, the planting scale of orchards is constantly expanding, and the workload of weeding in orchards is also increasing. However, most of my country's orchards are planted in hilly and mountainous areas with undulating terrain. The existing weeding methods mostly use general-purpose orchard mowers. Some of these general-purpose mowers do not have adjustable stubble height, which can easily cause blade collisions during use.

[0003] The authorized patent with publication number CN212232214U discloses a lawnmower blade lifting device based on a parallel four-bar linkage, relating to the field of orchard machinery technology. It includes an electric push rod, a first rod, a second rod, a compression spring, a central rod of the compression spring, a guide rail, and a slider. The bottom end of the electric push rod is hinged to a fixed rod, and the inner rod of the electric push rod is hinged to the first rod. The two ends of the first rod in the horizontal direction are hinged to the second rod. However, due to its structure, the adjustable height of the device is relatively short, and the movement direction of the slider and the rotation direction of the first and second rods are uncontrollable when the electric push rod pushes the first rod, resulting in poor stability during lifting and lowering, thus reducing overall stability.

[0004] Therefore, a pipe edge cutting lathe is proposed here. Utility Model Content

[0005] The purpose of this invention is to provide a lawnmower blade lifting device based on a parallel four-bar linkage, so as to solve the problem of poor stability during lifting mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lawnmower blade lifting device based on a parallel four-bar linkage, comprising a base plate and a mounting plate. The mounting plate is located on the upper side of the base plate. A lower fixing block is fixedly connected to the top of the base plate, and the lower fixing blocks are arranged sequentially from left to right. A first lower rod is rotatably connected to the outer side of the lower fixing block via a rotating shaft. A first upper rod is rotatably connected to the outer side of the first lower rod via a rotating shaft. A first rotating rod is rotatably connected to the outer side of the first rotating rod. A mounting base is fixedly connected to the outer side of the mounting base. A double-ended screw is fixedly connected to the end of the power output shaft of the first motor. A second lower rod is rotatably connected to the outer side of the lower fixing block via a rotating shaft. A second upper rod is rotatably connected to the outer side of the second lower rod via a rotating shaft. A movable seat is screwed to the outer side of the double-ended screw. A second rotating rod is fixedly connected to the outer side of the movable seat. The second rotating rod is rotatably connected to the second lower rod. A linkage rod is rotatably connected between the second lower rod and the first lower rod.

[0007] As a further description of the above technical solution: A mounting component is fixedly connected to the top of the mounting plate, and an upper fixing block is fixedly connected to the bottom of the mounting plate, arranged sequentially from left to right. The upper fixing block is rotatably connected to the first upper rod and the second upper rod via a rotating shaft. A second motor is fixedly connected to the top of the mounting plate, and a turntable is fixedly connected to the top of the power output shaft of the second motor. A cutting blade is detachably connected to the top of the turntable, and a connecting groove is opened on the top of the cutting blade. A connecting block is fixedly connected to the top of the turntable, and a storage groove is opened on the outer side of the connecting block. A telescopic rod is fixedly connected to the inner side of the storage groove, and a locking block is fixedly connected to the end of the telescopic rod. Springs are fixedly connected to the inner side of the storage groove, arranged sequentially from top to bottom, and the springs are fixedly connected to the locking block.

[0008] As a further description of the above technical solution: the power output shaft of the first motor passes through the mounting base, and a limiting collar is fixedly connected to the outer side of the double-ended screw, and they are arranged sequentially from left to right. The limiting collar is located on both sides of the thread of the double-ended screw.

[0009] As a further description of the above technical solution: a controller is embedded in the outer side of the base plate, and the controller is electrically connected to the first motor and the second motor via wires.

[0010] As a further description of the above technical solution: a splash-proof shell is fixedly connected to the inner side of the mounting component, and the splash-proof shell is circular in shape.

[0011] As a further description of the above technical solution: the top of the turntable has a first threaded groove, the top of the cutting blade has a second threaded groove, and a fixing bolt is screwed into the inner side of the second threaded groove.

[0012] As a further description of the above technical solution: the top of the connecting block has a through groove, and a pressing plate is fixedly connected to the inner side of the card block, the pressing plate passing through the through groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This lawnmower blade lifting device based on a parallel four-bar linkage mechanism starts the first motor through a controller, causing the first motor to drive the double-headed screw to rotate, which in turn moves the movable seat. This, in turn, drives the second lower rod and the second upper rod to rotate and move through the second rotating rod. The linkage rod drives the first lower rod and the first upper rod to rotate and move, which in turn moves the mounting base and the double-headed screw. The double-headed screw moves synchronously with the movable seat, thereby driving the mounting plate to move vertically to adjust the height, which increases the adjustable height. At the same time, the movable seat drives the second lower rod and the second upper rod to rotate and move in a directional manner, which ensures the controllability of its movement trajectory and improves the stability during adjustment.

[0015] 2. This lawnmower blade lifting device based on a parallel four-bar linkage can be used to lock the cutting blade onto the turntable, causing the cutting blade to press against a locking block, which then retracts into a storage slot. After locking, a spring pushes the locking block to move, thus limiting and fixing the cutting blade. Pressing the pressing plate moves the locking block to release the limiting position, allowing for quick assembly and disassembly of the cutting blade. Additionally, fixing bolts can be used for secondary fixation of the cutting blade, thereby improving connection stability and assembly / disassembly efficiency. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a lawnmower blade lifting device based on a parallel four-bar linkage proposed in this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of a lawnmower blade lifting device based on a parallel four-bar linkage proposed in this utility model;

[0018] Figure 3 This utility model presents a schematic diagram of a double-headed screw structure for a lawnmower blade lifting device based on a parallel four-bar linkage.

[0019] Figure 4 An exploded view of the turntable structure of a lawnmower blade lifting device based on a parallel four-bar linkage proposed in this utility model;

[0020] Figure 5 This is a cross-sectional view of the connecting block of a lawnmower blade lifting device based on a parallel four-bar linkage proposed in this utility model.

[0021] In the diagram: 100, base plate; 110, lower fixing block; 111, first lower rod; 112, first upper rod; 120, first rotating rod; 121, mounting base; 122, first motor; 123, double-ended screw; 124, limiting collar; 130, second lower rod; 131, second upper rod; 132, movable seat; 133, second rotating rod; 134, linkage rod; 140, controller; 200, mounting. 210. Plate; 211. Mounting component; 212. Upper fixing block; 213. Splash shield; 220. Second motor; 221. Turntable; 222. First screw groove; 230. Cutting blade; 231. Connecting groove; 232. Second screw groove; 233. Fixing bolt; 240. Connecting block; 241. Storage groove; 242. Telescopic rod; 243. Locking block; 244. Spring; 250. Through groove; 251. Pressing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] This utility model provides a lawnmower blade lifting device based on a parallel four-bar linkage, which improves stability and assembly / disassembly efficiency. Please refer to [link / reference]. Figure 1-5 It includes a base plate 100 and a mounting plate 200;

[0026] Please refer to it again. Figure 1-3A lower fixing block 110 is fixedly connected to the top of the base plate 100, and they are arranged sequentially from left to right. A first lower rod 111 is rotatably connected to the outer side of the lower fixing block 110 via a rotating shaft. The first lower rod 111 drives the first upper rod 112 to rotate. The first upper rod 112 is rotatably connected to the outer side of the first lower rod 111 via a rotating shaft. A first rotating rod 120 is rotatably connected to the outer side of the first lower rod 111, and the first rotating rod 120 drives the first lower rod 111 to rotate and move. A mounting base 121 is fixedly connected between the outer sides of the first rotating rod 120. The mounting base 121 is used to mount a first motor 122. The first motor 122 is fixedly connected to the outer side of the mounting base 121. The model of the first motor 122 is Y80M1-2. A double-ended screw 123 is fixedly connected to the end of the power output shaft of a motor 122. A second lower rod 130 is rotatably connected to the outer side of the lower fixed block 110 via a rotating shaft. The second lower rod 130 is used to drive the second upper rod 131 to rotate and move. The outer side of the second lower rod 130 is rotatably connected to the second upper rod 131 via a rotating shaft. A movable seat 132 is screwed to the outer side of the double-ended screw 123. The movable seat 132 is used to drive the second rotating rod 133 to rotate and move. A second rotating rod 133 is fixedly connected to the outer side of the movable seat 132. The second rotating rod 133 is rotatably connected to the second lower rod 130. A linkage rod 134 is rotatably connected between the second lower rod 130 and the first lower rod 111. The linkage rod 134 is used to drive the first lower rod 111 to rotate and move.

[0027] Please refer to it again. Figure 1-5 The mounting plate 200 is located on the upper side of the base plate 100. Specifically, the mounting plate 200 is connected to the base plate 100 via an upper fixing block 211. A mounting component 210 is fixedly connected to the top of the mounting plate 200, and an upper fixing block 211 is fixedly connected to the bottom of the mounting plate 200, arranged sequentially from left to right. The upper fixing block 211 is rotatably connected to the first upper rod 112 and the second upper rod 131 via a rotating shaft. A second motor 220 is fixedly connected to the top of the mounting plate 200. The model of the second motor 220 is Y80M1-2. The second motor 220 is used to drive the turntable 221 to rotate. The top of the power output shaft of the second motor 220 is fixedly connected to the turntable 221. A cutting blade 230 is detachably connected and used to cut weeds. The top of the cutting blade 230 has a connecting groove 231. A connecting block 240 is fixedly connected to the top of the turntable 221. The connecting block 240 is used to engage with the connecting groove 231. A storage groove 241 is opened on the outer side of the connecting block 240. A telescopic rod 242 is fixedly connected to the inner side of the storage groove 241. A locking block 243 is fixedly connected to the end of the telescopic rod 242. The locking block 243 is used to limit and fix the cutting blade 230. A spring 244 is fixedly connected to the inner side of the storage groove 241 and arranged sequentially from top to bottom. The spring 244 is fixedly connected to the locking block 243 and is used to push the locking block 243 to move and reset.

[0028] In summary, by starting the first motor 122 through the controller 140, the first motor 122 drives the double-headed screw 123 to rotate, which in turn moves the movable seat 132. This, in turn, drives the second lower rod 130 and the second upper rod 131 to rotate and move through the second rotating rod 133. The linkage rod 134 drives the first lower rod 111 and the first upper rod 112 to rotate and move, which in turn moves the mounting seat 121 and the double-headed screw 123. The double-headed screw 123 moves synchronously with the movable seat 132, thereby driving the mounting plate 200 to move vertically to adjust its height. This increases the adjustable height. At the same time, by driving the second lower rod 130 and the second upper rod 131 to rotate and move in a specific direction through the movable seat 132, the controllability of its movement trajectory is ensured, and the stability during adjustment is improved.

[0029] Please refer to it again. Figure 1-3 The power output shaft of the first motor 122 passes through the mounting base 121. The outer side of the double-ended screw 123 is fixedly connected to the limiting collar 124, which are arranged from left to right. The limiting collar 124 is located on both sides of the thread of the double-ended screw 123. The limiting collar 124 is used to prevent the movable seat 132 from disengaging from the double-ended screw 123.

[0030] Please refer to it again. Figure 1 A controller 140 is embedded in the outer side of the base plate 100. The controller 140 is electrically connected to the first motor 122 and the second motor 220 via wires. The controller 140 is used to facilitate centralized control of the first motor 122 and the second motor 220 by the staff.

[0031] Please refer to it again. Figure 1-2 The inner side of the mounting component 210 is fixedly connected to a splash shield 212, which is circular in shape and is used to prevent weeds from splashing.

[0032] Please refer to it again. Figure 4 The top of the turntable 221 has a first threaded groove 222, and the top of the cutting blade 230 has a second threaded groove 232. A fixing bolt 233 is screwed into the inner side of the second threaded groove 232. The fixing bolt 233 is used to cooperate with the first threaded groove 222 and the second threaded groove 232 to limit and fix the cutting blade 230.

[0033] Please refer to it again. Figure 5 The top of the connecting block 240 has a through groove 250, and the inner side of the locking block 243 is fixedly connected to a pressing plate 251. The pressing plate 251 passes through the through groove 250, and the through groove 250 is used to allow the pressing plate 251 to pass through and move. The pressing plate 251 is used to drive the locking block 243 to move.

[0034] In summary, by inserting the cutting blade 230 into the turntable 221, the cutting blade 230 presses against the locking block 243, causing the locking block 243 to retract into the storage slot 241. After insertion, the locking block 243 is moved by the spring 244, thus limiting and fixing the cutting blade 230. By pressing the pressing plate 251, the locking block 243 can be moved to disengage the limiting position. This allows for quick assembly and disassembly of the cutting blade 230. At the same time, the cutting blade 230 can be further fixed by the fixing bolt 233, thereby improving the connection stability and assembly and disassembly efficiency.

[0035] In practical use, those skilled in the art start the first motor 122 via the controller 140, causing the first motor 122 to drive the double-headed screw 123 to rotate, which in turn moves the movable seat 132. This, in turn, drives the second lower rod 130 and the second upper rod 131 to rotate and move via the second rotating rod 133. The linkage rod 134 drives the first lower rod 111 and the first upper rod 112 to rotate and move, which in turn moves the mounting seat 121 and the double-headed screw 123. The double-headed screw 123 moves synchronously with the movable seat 132, thereby causing the mounting plate 200 to move vertically to adjust its height. This increases the adjustable height. Simultaneously, through the movable seat... The seat 132 drives the second lower rod 130 and the second upper rod 131 to rotate and move in a specific direction, thereby ensuring the controllability of their movement trajectory. The cutting blade 230 can be inserted into the turntable 221, causing the cutting blade 230 to press against the locking block 243, which then retracts into the storage slot 241. After insertion, the locking block 243 is pushed to move by the spring 244, thereby limiting and fixing the cutting blade 230. The locking block 243 can be moved by pressing the pressing plate 251 to disengage the locking block, allowing for quick assembly and disassembly of the cutting blade 230. At the same time, the cutting blade 230 can be further fixed by the fixing bolt 233, thereby improving the connection stability.

[0036] It should be noted that the first motor 122 and the second motor 220 mentioned in the text are both existing technologies that can be found. The principle of the first motor 122 and the second motor 220 is as follows: A drive motor is an electromagnetic device that realizes the conversion of electrical energy and electromechanical energy based on the law of electromagnetic induction. It can convert electrical energy into mechanical energy, and mechanical energy into electrical energy, and can also realize the conversion between different forms of electrical energy.

[0037] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lawnmower blade lifting device based on a parallel four-bar linkage, characterized in that: The system includes a base plate (100) and a mounting plate (200). The mounting plate (200) is located on the upper side of the base plate (100). A lower fixing block (110) is fixedly connected to the top of the base plate (100) and arranged sequentially from left to right. A first lower rod (111) is rotatably connected to the outer side of the lower fixing block (110) via a pivot. A first upper rod (112) is rotatably connected to the outer side of the first lower rod (111) via a pivot. A first rotating rod (120) is rotatably connected to the outer side of the first rotating rod (120). A mounting base (121) is fixedly connected between the outer sides of the first rotating rod (120). A first electric... The first motor (122) has a double-headed screw (123) fixedly connected to the end of its power output shaft. The outer side of the lower fixed block (110) is rotatably connected to a second lower rod (130) via a rotating shaft. The outer side of the second lower rod (130) is rotatably connected to a second upper rod (131) via a rotating shaft. The outer side of the double-headed screw (123) is screwed to a movable seat (132). The outer side of the movable seat (132) is fixedly connected to a second rotating rod (133). The second rotating rod (133) is rotatably connected to the second lower rod (130). The second lower rod (130) is rotatably connected to the first lower rod (111) via a linkage rod (134).

2. The lawnmower blade lifting device based on a parallel four-bar linkage according to claim 1, characterized in that: The top of the mounting plate (200) is fixedly connected to a mounting component (210), and the bottom of the mounting plate (200) is fixedly connected to an upper fixing block (211), arranged sequentially from left to right. The upper fixing block (211) is rotatably connected to the first upper rod (112) and the second upper rod (131) via a rotating shaft. The top of the mounting plate (200) is fixedly connected to a second motor (220), and the top of the power output shaft of the second motor (220) is fixedly connected to a turntable (221). The top of the turntable (221) is detachably connected to a cutting blade. 230), the top of the cutting blade (230) has a connecting groove (231), the top of the turntable (221) is fixedly connected to a connecting block (240), the outer side of the connecting block (240) has a storage groove (241), the inner side of the storage groove (241) is fixedly connected to a telescopic rod (242), the end of the telescopic rod (242) is fixedly connected to a locking block (243), the inner side of the storage groove (241) is fixedly connected to a spring (244), and they are arranged sequentially from top to bottom. The spring (244) is fixedly connected to the locking block (243).

3. The lawnmower blade lifting device based on a parallel four-bar linkage according to claim 1, characterized in that: The power output shaft of the first motor (122) passes through the mounting base (121). The outer side of the double-ended screw (123) is fixedly connected with a limiting collar (124), which is arranged from left to right. The limiting collar (124) is located on both sides of the thread of the double-ended screw (123).

4. A lawnmower blade lifting device based on a parallel four-bar linkage as described in claim 2, characterized in that: A controller (140) is embedded in the outer side of the base plate (100), and the controller (140) is electrically connected to the first motor (122) and the second motor (220) via wires.

5. A lawnmower blade lifting device based on a parallel four-bar linkage according to claim 2, characterized in that: The inner side of the mounting component (210) is fixedly connected to a splash shield (212), which is circular in shape.

6. A lawnmower blade lifting device based on a parallel four-bar linkage according to claim 2, characterized in that: The turntable (221) has a first threaded groove (222) on its top, and the cutting blade (230) has a second threaded groove (232) on its top. A fixing bolt (233) is screwed into the inner side of the second threaded groove (232).

7. A lawnmower blade lifting device based on a parallel four-bar linkage according to claim 2, characterized in that: The top of the connecting block (240) has a through groove (250), and the inner side of the locking block (243) is fixedly connected to a pressing plate (251), which passes through the through groove (250).

Images