Lawn trimming device for landscaping

Abstract

The invention belongs to the technical field of landscaping equipment, and particularly provides a lawn trimming device for landscaping. Comprising a handheld rod, the handheld rod is provided with a shielding cover, the handheld rod is rotationally connected with a mounting ring, and the handheld rod is provided with a driving module used for driving the mounting ring to rotate; the nylon wire is arranged on the mounting ring, and a fixing frame is fixedly connected to the mounting ring; the fixing shell is fixedly connected to the fixing frame, the fixing shell is rotationally connected with a connecting shaft, and the connecting shaft is provided with a mounting frame; the cutting knife is fixedly connected to the mounting frame; and the driving mechanism is arranged in the mounting ring. After the rotating speed of the mounting ring is reduced, the cutting knife is driven to rotate, the cutting knife cuts a plant wound on the mounting ring, the plant is separated from the mounting ring, the resistance borne by the mounting ring is gradually reduced, the initial rotating speed is recovered, the load borne by the driving module is reduced, and the plant pruning efficiency is guaranteed.

Description

Technical Field

[0001] The present invention complies with the technical field of gardening equipment, and in particular relates to a lawn mowing device for gardening. Background Art

[0002] With the acceleration of urbanization, the area of ​​urban green space is increasing. As an important part of beautifying the environment and improving the ecology, lawns are widely used in parks, squares, residential areas and other places. In order to keep the lawn beautiful and healthy, regular mowing is essential. Most existing lawn mowing devices use motors to drive nylon ropes to rotate at high speed to achieve plant cutting.

[0003] When using nylon rope to trim tough plants (such as bermudagrass, tall fescue, etc.), the fibers of the tough plants are long and not easy to break after being cut, and will be entangled in the driving shaft of the trimming device, causing the load of the motor to increase and even cause the rotation speed of the motor to decrease, thereby causing overheating and damage to the motor. When the machine load is too large, the trimming device will leave uneven grass blades, which will not only affect the trimming efficiency, but also the overall appearance of the lawn. Summary of the invention

[0004] In order to overcome the shortcomings of the existing mowing devices, the present invention provides a lawn mowing device for landscaping.

[0005] The technical solution of the present invention is: a lawn mowing device for landscaping, comprising: A hand-held rod, the hand-held rod is equipped with a shielding cover, the hand-held rod is rotatably connected to a mounting ring, and the hand-held rod is equipped with a driving module for driving the mounting ring to rotate; A nylon line is arranged on the mounting ring, and a fixing frame is fixedly connected to the mounting ring; A fixed shell, fixedly connected to the fixed frame, the fixed shell is rotatably connected to a connecting shaft, and the connecting shaft is provided with a mounting frame; A cutting knife, fixedly connected to the mounting frame; The driving mechanism is arranged in the mounting ring and is used to drive the connecting shaft to rotate, thereby driving the cutting knife to deflect.

[0006] Further description, the driving mechanism includes: An oil storage cylinder, fixedly connected to the mounting ring; A piston rack, slidably connected to the oil storage cylinder; A driving frame is slidably connected to the mounting ring and fixedly connected to the piston frame, and the driving frame is connected to the connecting shaft via a gear rack transmission; The detection mechanism is arranged in the installation ring and is used to detect the rotation speed of the installation ring and judge whether the installation ring is entangled by plants according to the rotation speed of the installation ring.

[0007] Further description, the detection mechanism includes: A centrifugal block is slidably connected to the mounting ring, and a first elastic member is disposed between the two; A spring stopper is slidably connected in the mounting ring, and a second elastic member is arranged between the two, and the spring stopper is used to limit the centrifugal block; The first push rod is fixed in the mounting ring, and the telescopic end of the first push rod is fixed to the spring limit block. The fixed part of the first push rod is communicated with the oil storage cylinder.

[0008] Further explanation includes: A plurality of striking rods are arranged at intervals and are all arranged on a side of the mounting ring close to the nylon line, two adjacent striking rods are hinged to each other, the striking rod close to the mounting ring is fixedly connected to the mounting ring, and the nylon line runs through all the striking rods; The flexible sleeve is fixedly connected to one side of the mounting ring close to the nylon line and is fixedly connected to all the striking rods.

[0009] It is further explained that the rotation angle between two adjacent striking rods is less than 90°.

[0010] Further description: the mounting ring is fixedly connected to a second push rod, the fixed portion of the second push rod is communicated with the oil storage cylinder, the telescopic end of the second push rod is fixedly connected to a sliding sleeve, and the sliding sleeve is slidably connected to the flexible sleeve.

[0011] It is further explained that the mounting ring is slidably connected with an intercepting block, a third elastic member is fixedly connected between the intercepting block and the sliding sleeve, and the intercepting block is used to limit the telescopic end of the sliding sleeve and the second push rod.

[0012] Further explanation includes: A switching mechanism is provided on the mounting ring and is used to change the position of the cutting knife so that the cutting knife protrudes from the fixed shell. The switching mechanism includes: A first sleeve, fixedly connected in the mounting ring; A first rod is slidably connected in the first sleeve, the first rod passes through the mounting ring, one end of the first rod close to the cutting knife is hinged to the mounting frame, the mounting frame is slidably connected to the connecting shaft, the fixed shell is provided with a limiting groove, the mounting frame is located in the limiting groove and slides, the limiting groove is provided with a spiral portion and two straight groove portions, and the spiral portion is located between the two straight groove portions; A connecting assembly, disposed on the mounting ring, for placing all the striking rods on the same horizontal line; A control component is arranged on the hand-held rod and is used to adjust the position of the first rod so that the first rod drives the installation frame to move.

[0013] Further description, the connection component includes: A second sleeve, fixedly connected to the mounting ring; The second rod is slidably connected in the second sleeve. The second sleeve is communicated with the first sleeve. The second rod passes through the mounting ring and the sliding sleeve. The second rod is used to support the flexible sleeve when the second rod is inserted into the flexible sleeve.

[0014] Further description, the control component includes: A third push rod, fixedly connected to the hand-held rod; An oil transfer pipe, fixedly connected to and communicated with the fixed portion of the third push rod, the oil transfer pipe passes through the mounting ring, the oil storage cylinder and the driving frame, and the oil transfer pipe is communicated with the second sleeve; A fourth push rod is fixedly connected to the mounting ring, and a fixing portion thereof is communicated with the oil transmission pipe; The winding ring is rotatably connected in the mounting ring, the telescopic end of the fourth push rod and the winding ring are driven by a gear rack, the nylon line is slidably connected to the mounting ring, and the winding ring is fixedly connected to the nylon line.

[0015] The beneficial effects of the present invention are as follows: after the rotation speed of the mounting ring is reduced, the present invention drives the cutting knife to rotate, and the cutting knife cuts the plants wrapped around the mounting ring to separate the plants from the mounting ring. The resistance experienced by the mounting ring gradually decreases, and the initial rotation speed is restored, thereby reducing the load on the driving module, ensuring the efficiency of plant trimming, and at the same time ensuring the flatness of the lawn.

[0016] The present invention detects the rotation speed of the mounting ring through the movement of the centrifugal block, thereby identifying the entanglement of the plant and facilitating the triggering of the cutting operation.

[0017] The present invention inserts the sliding sleeve into the flexible sleeve so that all striking rods close to the sliding sleeve cannot be relatively deflected, that is, they are deformed from a soft state to a hard state, thereby changing the fixed position of the nylon line, and then changing the force application position of the nylon line, thereby increasing the force applied to the plant, making it easier to cut off plants with strong toughness, thereby reducing the influence of the wear of the nylon line on the pruning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a three-dimensional structural cross-sectional view of the hand-held rod and the shielding cover of the present invention; Figure 3 It is a three-dimensional structural cross-sectional view of the mounting ring of the present invention; Figure 4 A three-dimensional structural cross-sectional view of the mounting ring of the present invention from another perspective; Figure 5 It is a three-dimensional structural cross-sectional view of the fixed shell and the oil storage cylinder of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the centrifugal block, the spring limit block and the first push rod of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the nylon line and the striking rod of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the striking rod and the flexible sleeve of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the interception block of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the sliding sleeve and the intercepting block of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the limiting groove of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the first sleeve and the second sleeve of the present invention; Fig.13 It is a three-dimensional structural cross-sectional view of the first sleeve and the second sleeve of the present invention.

[0019] Markings in the accompanying drawings: 1-handling rod, 2-shielding cover, 3-mounting ring, 4-nylon line, 5-fixed frame, 6-fixed shell, 7-connecting shaft, 8-mounting frame, 9-cutting knife, 21-oil storage cylinder, 22-piston frame, 23-driving frame, 31-centrifugal block, 32-spring limit block, 33-first push rod, 41-striking rod, 42-flexible sleeve, 51-second push rod, 52-sliding sleeve, 61-intercepting block, 71-first sleeve, 72-first rod, 73-limiting groove, 81-second sleeve, 82-second rod, 91-third push rod, 92-oil transfer pipe, 93-fourth push rod, 94-winding ring. DETAILED DESCRIPTION

[0020] The present invention will now be described more fully below with reference to the accompanying drawings, in which currently preferred embodiments of the present invention are shown. However, the present invention may be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness, and these embodiments fully convey the scope of the present invention to the skilled person.

[0021] Example 1: A lawn mowing device for landscaping, Figure 1-Figure 5As shown, it includes: a hand-held rod 1, the hand-held rod 1 is equipped with a shielding cover 2, the hand-held rod 1 is rotatably connected to a mounting ring 3, and the hand-held rod 1 is equipped with a driving module for driving the mounting ring 3 to rotate; a nylon wire 4, which is arranged on the mounting ring 3, and a fixing frame 5 is fixedly connected to the mounting ring 3; a fixing shell 6, which is fixedly connected to the fixing frame 5, and the fixing shell 6 is rotatably connected to a connecting shaft 7, and the connecting shaft 7 is provided with a mounting frame 8; a cutting knife 9, which is fixedly connected to the mounting frame 8; a driving mechanism, which is arranged in the mounting ring 3, and is used to drive the connecting shaft 7 to rotate, thereby driving the cutting knife 9 to deflect.

[0022] In the above scheme, a method is proposed to cut the plants wrapped around the mounting ring 3 to reduce damage to the device; the driving module is an existing driving motor and a transmission box, both of which are existing structures, and the internal structure is not shown in the figure; the nylon wire 4 is used to cut the plants, and its number can be adjusted according to actual conditions. This scheme is explained by taking two nylon wires 4 and two fixing frames 5 as an example; the length of the fixing shell 6 is less than the length of the nylon wire 4; the cutting knife 9 is used to cut the plants wrapped around the mounting ring 3.

[0023] Working principle: When using this device to mow the lawn, the operator moves the device to the target position through the hand-held rod 1, and then turns on the driving module on the hand-held rod 1. The driving module drives the mounting ring 3 to rotate, and the mounting ring 3 drives the nylon line 4 and the fixing frame 5 to rotate synchronously. The rapidly rotating nylon line 4 cuts the plants, and the mowing work is performed in this way. The fixing frame 5 drives the fixing shell 6 and the parts thereon to rotate synchronously. During the rotation of the mounting ring 3, the detection mechanism starts to work.

[0024] During the rotation of the mounting ring 3, if a plant with strong toughness is encountered, the plant will entangle the mounting ring 3, causing its resistance to increase. At this time, the rotation speed of the mounting ring 3 decreases accordingly. When the detection mechanism detects that the rotation speed of the mounting ring 3 decreases, the driving mechanism starts to work and drives the connecting shaft 7 to rotate counterclockwise (with a rotation speed of 1 / 4 of the rotation speed of the mounting ring 3). Figure 5 The connecting shaft 7 drives the cutting knife 9 to rotate through the mounting frame 8, and the cutting knife 9 rotates counterclockwise and cuts the plants wrapped around the mounting ring 3, so that the plants are separated from the mounting ring 3, and the resistance of the mounting ring 3 is gradually reduced, and the initial rotation speed is restored.

[0025] After the detection mechanism detects that the rotation speed of the mounting ring 3 has been restored, the driving mechanism starts to work and drives the connecting shaft 7 to rotate in the opposite direction to reset, thereby driving the cutting knife 9 to reset, and then the nylon line 4 continues to trim the plants. When the mounting ring 3 is entangled, the above steps are repeated again until the trimming is completed, and then the driving module on the handheld rod 1 is turned off.

[0026] Comparison Figure 3-Figure 6As shown, the driving mechanism includes: an oil storage cylinder 21, fixedly connected to the mounting ring 3; a piston frame 22, slidably connected to the oil storage cylinder 21; a driving frame 23, slidably connected to the mounting ring 3 and fixedly connected to the piston frame 22, and the driving frame 23 and the connecting shaft 7 are connected via a gear rack transmission; a detection mechanism is arranged in the mounting ring 3, for detecting the rotation speed of the mounting ring 3, and judging whether the mounting ring 3 is entangled by plants by the rotation speed of the mounting ring 3.

[0027] In the above scheme, the oil storage cylinder 21 is an annular structure, and hydraulic oil is filled inside it; the piston frame 22 is composed of a circular ring and two cylinders, wherein a sealing ring is provided on the circumference of the circular ring to improve the sealing between the piston frame 22 and the oil storage cylinder 21; two racks are fixedly connected to the lower part of the driving frame 23, and a gear meshing with the rack on the driving frame 23 is fixedly connected to the connecting shaft 7.

[0028] Working principle: When the detection mechanism detects that the rotation speed of the mounting ring 3 decreases, the detection mechanism fills hydraulic oil into the oil storage cylinder 21, and the hydraulic oil in the oil storage cylinder 21 pushes the piston frame 22 downward, and the piston frame 22 drives the driving frame 23 to move downward. The piston frame 22 drives the connecting shaft 7 to rotate counterclockwise through the gear and rack, thereby driving the cutting knife 9 to rotate and cut the entangled plants.

[0029] When the detection mechanism detects that the rotation speed of the mounting ring 3 is restored, the detection mechanism extracts the hydraulic oil in the oil storage cylinder 21, the piston frame 22 moves upward, the piston frame 22 drives the driving frame 23 to move, and the gear rack of the driving frame 23 drives the connecting shaft 7 to reset.

[0030] Comparison Figure 4-Figure 7 As shown, the detection mechanism includes: a centrifugal block 31, which is slidably connected to the mounting ring 3, and a first elastic member is arranged between the two; a spring limit block 32, which is slidably connected in the mounting ring 3, and a second elastic member is arranged between the two, and the spring limit block 32 is used to limit the centrifugal block 31; a first push rod 33, which is fixed in the mounting ring 3, and its telescopic end is fixed to the spring limit block 32, and the fixed part of the first push rod 33 is connected to the oil storage cylinder 21.

[0031] In the above scheme, the centrifugal blocks 31 are symmetrically distributed, so that the mounting ring 3 is evenly stressed during rotation. The first elastic member on the centrifugal block 31 is a tension spring; the spring limit block 32 is composed of a square shell, a wedge block and a spring, the inclined surface of the wedge block faces the adjacent centrifugal block 31, and the fixed part of the first push rod 33 is filled with hydraulic oil. The second elastic member of the spring limit block 32 is a tension spring, and the elastic coefficient of the first elastic member on the centrifugal block 31 is greater than the elastic coefficient of the second elastic member on the spring limit block 32.

[0032] Working principle: during the rotation of the mounting ring 3, the mounting ring 3 drives all the centrifugal blocks 31 to rotate, and the centrifugal blocks 31 move away from the axis of the mounting ring 3 under the action of centrifugal force, that is, all the centrifugal blocks 31 move in reverse, and the centrifugal blocks 31 stretch the adjacent first elastic member.

[0033] During the movement of the centrifugal block 31, when the centrifugal block 31 contacts the wedge block of the spring limit block 32, the centrifugal block 31 squeezes the wedge block of the spring limit block 32, and the wedge block of the spring limit block 32 moves downward and compresses the spring thereon, until the centrifugal block 31 passes through the wedge block of the spring limit block 32, and the wedge block of the spring limit block 32 moves upward under the action of the spring thereon, and when the centrifugal block 31 moves to the limit position, the centrifugal block 31 stops moving, and at this time the centrifugal force exerted on the centrifugal block 31 is equal to the pulling force provided by the first elastic member thereon.

[0034] As the mounting ring 3 rotates, when the rotation speed of the mounting ring 3 decreases, the centrifugal force on the centrifugal block 31 decreases, and the centrifugal block 31 moves toward the direction close to the axis of the mounting ring 3 under the action of the first elastic member thereon, and the first elastic member gradually shrinks. When the centrifugal block 31 contacts the wedge block of the spring limit block 32 again, the centrifugal block 31 drives the wedge block of the spring limit block 32 to move synchronously, thereby causing the spring limit block 32 to move (the second elastic member on the spring limit block 32 is stretched), and the spring limit block 32 pushes the telescopic end of the first push rod 33 to move, and the telescopic end of the first push rod 33 pushes the hydraulic oil in its fixed part into the oil storage cylinder 21, thereby increasing the hydraulic oil in the oil storage cylinder 21.

[0035] During the process of restoring the rotation speed of the mounting ring 3, the centrifugal block 31 continues to move away from the axis of the mounting ring 3 (the first elastic member on the centrifugal block 31 is stretched again), and loses the squeeze on the spring limit block 32. The spring limit block 32 is reset under the action of the second elastic member thereon. The spring limit block 32 drives the telescopic end of the first push rod 33 to reset, and draws the hydraulic oil in the oil storage cylinder 21 back to the fixed part of the first push rod 33, so that the hydraulic oil in the oil storage cylinder 21 returns to the initial amount.

[0036] When using the device to cut plants, the tough plants have greater friction on the nylon rope of the trimming device. Prolonged or frequent trimming of these plants will cause the nylon rope to wear quickly, resulting in poor trimming results, inability to neatly cut the grass leaves, and affecting the beauty of the lawn.

[0037] Example 2: Based on Example 1, Figure 3 , Figure 4 , Figure 7 and Figure 8As shown, it also includes: a plurality of striking rods 41 distributed at intervals, all of which are arranged on the side of the mounting ring 3 close to the nylon line 4, two adjacent striking rods 41 are hinged to each other, the striking rod 41 close to the mounting ring 3 is fixed thereto, and the nylon line 4 runs through all the striking rods 41; a flexible sleeve 42, fixed to the side of the mounting ring 3 close to the nylon line 4, and fixed to all the striking rods 41; the rotation angle between two adjacent striking rods 41 is less than 90°.

[0038] In the above scheme, there are eight striking rods 41, which are divided into two groups, each group corresponds to a nylon line 4, and the striking rods 41 are used to support the nylon line 4 and change the fixed position of the nylon line 4. The four striking rods 41 close to the same nylon line 4 form a structure similar to a chain; the striking rods 41 are located on the upper side of the flexible sleeve 42.

[0039] Comparison Figure 6-Figure 10 As shown, the mounting ring 3 is fixedly connected to the second push rod 51, the fixed part of the second push rod 51 is connected to the oil storage cylinder 21, the telescopic end of the second push rod 51 is fixedly connected to the sliding sleeve 52, and the sliding sleeve 52 is slidably connected to the flexible sleeve 42; the mounting ring 3 is slidably connected to the intercepting block 61, and a third elastic member is fixedly connected between the intercepting block 61 and the sliding sleeve 52, and the intercepting block 61 is used to limit the sliding sleeve 52 and the telescopic end of the second push rod 51.

[0040] In the above scheme, when the hydraulic oil in the fixed part of the second push rod 51 increases, its telescopic end extends out; the sliding sleeve 52 is used to support the flexible sleeve 42, and by inserting the sliding sleeve 52 into the flexible sleeve 42, the flexible sleeve 42 cannot be deflected, and thus the adjacent striking rod 41 cannot be deflected; initially, the telescopic end of the second push rod 51 blocks the interception block 61, so that the upper part of the interception block 61 is located in the mounting ring 3, and a groove is provided on the upper side of the telescopic end of the second push rod 51. When the interception block 61 moves into the groove of the telescopic end of the second push rod 51, the upper part of the interception block 61 loses contact with the mounting ring 3; the interception block 61 has an inclined surface on one side away from the fixed part of the second push rod 51, and the length of the inclined surface in the vertical direction is greater than the groove depth of the groove on the telescopic end of the second push rod 51; the third elastic member of the interception block 61 is initially in a stretched state; the rotation angle between two adjacent striking rods 41 is less than 90°, so as to facilitate the insertion of the sliding sleeve 52 into the flexible sleeve 42.

[0041] Working principle: when the hydraulic oil in the oil storage cylinder 21 gradually increases, a part of the hydraulic oil in the oil storage cylinder 21 flows into the fixed part of the second push rod 51, the telescopic end of the second push rod 51 extends out, and slides relative to the sliding sleeve 52. When the groove of the telescopic end of the second push rod 51 is aligned with the intercepting block 61, the intercepting block 61 moves downward under the action of the third elastic member thereon and enters the groove of the telescopic end of the second push rod 51. At this time, the intercepting block 61 loses contact with the mounting ring 3, that is, the intercepting block 61 loses the limiting position on the sliding sleeve 52, and the sliding sleeve 52 forms a "whole" with the telescopic end of the second push rod 51 under the action of the intercepting block 61.

[0042] After the intercepting block 61 enters the groove of the telescopic end of the second push rod 51, the telescopic end of the second push rod 51 drives the sliding sleeve 52 to move, and the sliding sleeve 52 is inserted into the flexible sleeve 42. The flexible sleeve 42 drives the striking rods 41 thereon to deflect (the two adjacent striking rods 41 are initially in a bent state), and the portion of the flexible sleeve 42 corresponding to the sliding sleeve 52 is deformed from a soft state to a rigid state under the action of the sliding sleeve 52, that is, the portion of the flexible sleeve 42 close to the sliding sleeve 52 cannot be deflected. In this process, all the striking rods 41 close to the sliding sleeve 52 cannot be relatively deflected, that is, when the sliding sleeve 52 corresponds to the two striking rods 41 (in Figure 8 For example, taking the order from back to front as an example), the two striking rods 41 on the rear side cannot deflect relative to each other, and the two striking rods 41 on the front side can still continue to deflect relative to each other. At this time, under the action of the two striking rods 41 on the rear side, the parts of the nylon line 4 corresponding to the two striking rods 41 on the rear side cannot deflect.

[0043] After the sliding sleeve 52 is inserted into the flexible sleeve 42, as the mounting ring 3 rotates, the rotation of the nylon line 4 driven by the mounting ring 3 is converted into the rotation of the nylon line 4 driven by the second striking rod 41, thereby changing the fixed position of the nylon line 4, and then changing the force application position of the nylon line 4, so that the force application position of the nylon line 4 is closer to the position of the plant, which is convenient for cutting off the tough plants, thereby reducing the impact of the tough plants on the device, and increasing the force applied to the plants, thereby improving the efficiency of pruning the plants, thereby reducing the impact of the wear of the nylon line 4 on the pruning effect.

[0044] When the hydraulic oil in the oil storage cylinder 21 gradually decreases, the hydraulic oil in the fixed part of the second push rod 51 flows back into the oil storage cylinder 21, and the telescopic end of the second push rod 51 drives the sliding sleeve 52 to reset. Then the telescopic end of the second push rod 51 squeezes the inclined surface of the interception block 61, and the third elastic member on the interception block 61 is stretched, and the interception block 61 moves upward so that its upper part contacts with the mounting ring 3 until the interception block 61 is reset. The interception block 61 continues to limit the sliding sleeve 52. When the hydraulic oil in the oil storage cylinder 21 returns to the initial amount (when the rotation speed of the mounting ring 3 returns to the initial level), the telescopic end of the second push rod 51 is reset, and the telescopic end of the second push rod 51 blocks the interception block 61 again. When the speed of the mounting ring 3 continues to decrease, the above operation is repeated.

[0045] Example 3: Based on Example 2, Figure 6 and Figure 11-13 As shown, it also includes: a switching mechanism, which is arranged on the mounting ring 3 and is used to change the position of the cutting knife 9 so that the cutting knife 9 can be protruded from the fixed shell 6. The switching mechanism includes: a first sleeve 71, which is fixed to the mounting ring 3; two first rods 72, which are symmetrically distributed and are both slidably connected to the first sleeve 71. The first rod 72 is composed of a piston part and a driving part. A sealing rubber ring is arranged on the circumference of the piston part to improve the sealing between the first rod 72 and the first sleeve 71. The first rod 72 passes through the mounting ring 3. The part of the first sleeve 71 located between the two first rods 72 is filled with hydraulic oil. One end of the first rod 72 close to the cutting knife 9 is hinged to the mounting frame 8, and the mounting frame 8 is slidably connected to the connecting shaft 7. The fixed shell 6 is provided with a limiting groove 73, and the mounting frame 8 slides in the limiting groove 73. The limiting groove 73 is provided with a spiral portion and two straight groove portions, and the spiral portion is located between the two straight groove portions. The spiral portion of the limiting groove 73 is used to drive the cutting knife 9 to deflect; the connecting component is arranged on the mounting ring 3, and is used to make all the striking rods 41 on the same horizontal line; the control component is arranged on the hand-held rod 1, and is used to adjust the position of the first rod 72 so that it drives the mounting frame 8 to move.

[0046] Working principle: Before using this device, the operator determines whether to use the nylon line 4 or the cutting knife 9 to prune the plants according to the actual situation. When the nylon line 4 is needed to perform pruning operations, the operation of the above embodiment is repeated. If the cutting knife 9 is needed to perform pruning operations, the operator starts the control component to increase the hydraulic oil in the first sleeve 71 and push the two first rods 72 away from each other. The first rod 72 pushes the adjacent mounting frame 8 to move, and the mounting frame 8 and the connecting shaft 7 slide relative to each other.

[0047] When the connecting shaft 7 loses contact with the mounting frame 8, the mounting frame 8 moves to the limiting groove 73. As the first rod 72 moves, the cutting knife 9 gradually extends out of the fixed shell 6. When the mounting frame 8 enters the spiral portion of the limiting groove 73, the limiting groove 73 guides the mounting frame 8, and the mounting frame 8 starts to rotate. The mounting frame 8 drives the cutting knife 9 to move. When the mounting frame 8 moves out of the spiral portion of the limiting groove 73, the cutting knife 9 rotates 90°. As the mounting frame 8 moves, until the mounting frame 8 moves to the extreme position of the limiting groove 73, the mounting frame 8 stops moving, and the cutting knife 9 is completely extended, and the control component stops working.

[0048] After the cutting knife 9 is fully extended, the operator drives the mounting ring 3 to rotate through the driving module, and the mounting ring 3 drives the cutting knife 9 to rotate through the fixing frame 5, the fixing shell 6, the connecting shaft 7 and the mounting frame 8, so that the plants are trimmed by the cutting knife 9, thereby increasing the application scope of the device.

[0049] After the plant pruning is completed, the operator turns off the drive module to stop the mounting ring 3 from rotating, and extracts the hydraulic oil in the first sleeve 71 through the control component, so that the two first rods 72 move toward each other, and the mounting frame 8 slides along the limit groove 73, so that the two cutting knives 9 move toward each other and rotate 90° in the opposite direction, thus restoring the initial position.

[0050] Comparison Figure 6 and Figure 10-13 As shown, the connecting assembly includes: a second sleeve 81, which is fixed in the mounting ring 3; two second rods 82, which are symmetrically distributed and are both slidably connected in the second sleeve 81, the second rod 82 is composed of a piston part and a driving part, the driving part of the second rod 82 is provided with a sealing gasket to improve the sealing between the second rod 82 and the second sleeve 81, the part of the second sleeve 81 located between the two second rods 82 is filled with hydraulic oil, the second sleeve 81 is connected to the first sleeve 71, the second rod 82 passes through the mounting ring 3 and the sliding sleeve 52, the second rod 82 is used to support the flexible sleeve 42 when it is inserted into the flexible sleeve 42, the driving part of the second rod 82 is a hard rubber rod, which is used to flexibly squeeze the flexible sleeve 42 so that the flexible sleeve 42 is deformed from a soft state to a hard state.

[0051] Working principle: During the operation of the control component, the hydraulic oil in the second sleeve 81 increases, causing the two second rods 82 to move away from each other, and the second rod 82 slides relative to the sliding sleeve 52. The second rod 82 squeezes the flexible sleeve 42, causing the flexible sleeve 42 to deflect. Then the second rod 82 supports the flexible sleeve 42, and transforms the flexible sleeve 42 from a soft state to a hard state, so that all the striking rods 41 cannot rotate relative to each other. All the striking rods 41 together form a straight rod. During the rotation of the cutting knife 9, the striking rods 41 rotate synchronously, and the hard obstacles are driven away by the striking rods 41 to reduce the damage to the cutting knife 9.

[0052] After the plants are trimmed, the operator extracts the hydraulic oil in the second sleeve 81 through the control assembly to reset the two second rods 82. The second rods 82 lose their support for the flexible sleeve 42, and the flexible sleeve 42 returns to its initial state, so that all the striking rods 41 also return to their initial states.

[0053] Comparison Figure 2-Figure 5 , Fig.12 and Fig.13 As shown, the control assembly includes: a third push rod 91, which is fixedly connected to the hand-held rod 1. The telescopic end of the third push rod 91 is provided with a push plate to facilitate the operator to push. The hand-held rod 1 can be provided with an existing locking structure (not shown in the figure), and the locking structure is used to limit the push plate on the telescopic end of the third push rod 91, so that the push plate on the telescopic end of the third push rod 91 cannot move at will; an oil transmission pipe 92, which is fixedly connected and connected to the fixed part of the third push rod 91, and the fixed part of the third push rod 91 is filled with hydraulic oil. The oil transmission pipe 92 passes through the mounting ring 3, the oil storage cylinder 21 and the driving frame 23, and the oil transmission pipe 92 is connected to the second sleeve 81 , and a transition shell is provided at the connection point between the two, so that the second sleeve 81 and the oil transfer pipe 92 can rotate relative to each other; the fourth push rod 93 is fixedly connected to the mounting ring 3, and its fixed part is connected to the oil transfer pipe 92. When hydraulic oil is injected into the fixed part of the fourth push rod 93, the telescopic end of the fourth push rod 93 is retracted; the winding ring 94 is rotatably connected to the mounting ring 3, and the telescopic end of the fourth push rod 93 and the winding ring 94 are driven by a gear rack. The telescopic end of the fourth push rod 93 is fixedly connected to a rack, and the winding ring 94 is equipped with a gear, which meshes with the rack. The nylon line 4 is slidably connected to the mounting ring 3, and the winding ring 94 is fixed to the nylon line 4.

[0054] Working principle: when it is necessary to trim the plants with the cutting knife 9, the operator pushes the telescopic end of the third push rod 91 downward at an angle, and the hydraulic oil in the fixed part of the third push rod 91 enters the oil transfer pipe 92, and a part of the hydraulic oil in the oil transfer pipe 92 enters the second sleeve 81, so that the two second rods 82 are separated from each other, and the hydraulic oil in the second sleeve 81 enters the first sleeve 71, so that the two first rods 72 are separated from each other. During this process, another part of the hydraulic oil in the oil transfer pipe 92 synchronously enters the fixed part of the fourth push rod 93, and then the telescopic end of the fourth push rod 93 is retracted, and the telescopic end of the fourth push rod 93 drives the winding ring 94 to rotate through the gear and rack, and the winding ring 94 winds up the nylon line 4, and the striking rod 41 slides relative to the nylon line 4 until the telescopic end of the fourth push rod 93 stops moving, and the winding ring 94 stops winding up the nylon line 4, at which time the nylon line 4 is no longer exposed to the outside of the striking rod 41.

[0055] After the winding ring 94 stops winding the nylon wire 4, the cutting knife 9 is also adjusted, and then the cutting knife 9 is used to trim the plants. During this process, the plants are no longer in contact with the nylon wire 4. By winding the nylon wire 4, the nylon wire 4 is no longer in contact with the plants, which reduces damage to the nylon wire 4 and extends its service life.

[0056] After the cutting of the plants by the cutting knife 9 is completed, the operator pulls the telescopic end of the third push rod 91 to make the hydraulic oil in the fixed parts of the first sleeve 71 , the second sleeve 81 and the fourth push rod 93 flow back to the fixed part of the third push rod 91 .

[0057] When the hydraulic oil in the fixed part of the fourth push rod 93 is extracted, the telescopic end of the fourth push rod 93 extends outward and drives the winding ring 94 through the gear rack. During this process, the operator simultaneously pulls the nylon line 4 outward to restore the nylon line 4 to its original position.

[0058] While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

Claims

1. A lawn mowing device for landscaping, characterized in that it comprises: A hand-held rod (1), the hand-held rod (1) being equipped with a shielding cover (2), the hand-held rod (1) being rotatably connected to a mounting ring (3), and the hand-held rod (1) being equipped with a driving module for driving the mounting ring (3) to rotate; A nylon wire (4) is arranged on the mounting ring (3), and a fixing frame (5) is fixedly connected to the mounting ring (3); A fixed shell (6) is fixedly connected to the fixed frame (5); the fixed shell (6) is rotatably connected to a connecting shaft (7); and the connecting shaft (7) is provided with a mounting frame (8); A cutting knife (9) fixedly connected to the mounting frame (8); A driving mechanism is arranged in the mounting ring (3) and is used to drive the connecting shaft (7) to rotate, thereby driving the cutting knife (9) to deflect.

2. A lawn mowing device for landscaping according to claim 1, characterized in that: The driving mechanism comprises: An oil storage cylinder (21) fixedly connected to the mounting ring (3); A piston frame (22) slidably connected to the oil storage cylinder (21); A drive frame (23) is slidably connected to the mounting ring (3) and fixedly connected to the piston frame (22); the drive frame (23) and the connecting shaft (7) are connected via a gear rack transmission; The detection mechanism is arranged in the mounting ring (3) and is used to detect the rotation speed of the mounting ring (3) and to judge whether the mounting ring (3) is entangled by plants based on the rotation speed of the mounting ring (3).

3. A lawn mowing device for landscaping according to claim 2, characterized in that: The detection mechanism includes: A centrifugal block (31) is slidably connected to the mounting ring (3), and a first elastic member is provided between the two; A spring stop block (32) is slidably connected to the mounting ring (3), and a second elastic member is provided between the two, and the spring stop block (32) is used to limit the centrifugal block (31); The first push rod (33) is fixedly connected in the mounting ring (3), and the telescopic end thereof is fixedly connected to the spring limit block (32). The fixed portion of the first push rod (33) is in communication with the oil storage cylinder (21).

4. A lawn mowing device for landscaping according to claim 2, characterized in that include: A plurality of striking rods (41) are arranged at intervals and are all arranged on a side of the mounting ring (3) close to the nylon line (4); two adjacent striking rods (41) are hinged to each other, the striking rod (41) close to the mounting ring (3) is fixedly connected to it, and the nylon line (4) passes through all the striking rods (41); The flexible sleeve (42) is fixedly connected to a side of the mounting ring (3) close to the nylon line (4), and is fixedly connected to all the striking rods (41).

5. A lawn mowing device for landscaping according to claim 4, characterized in that: The rotation angle between two adjacent striking rods (41) is less than 90°.

6. A lawn mowing device for landscaping according to claim 4, characterized in that: The mounting ring (3) is fixedly connected to a second push rod (51), a fixed portion of the second push rod (51) is in communication with the oil storage cylinder (21), a telescopic end of the second push rod (51) is fixedly connected to a sliding sleeve (52), and the sliding sleeve (52) is slidably connected to the flexible sleeve (42).

7. A lawn mowing device for landscaping according to claim 6, characterized in that: The mounting ring (3) is slidably connected to an intercepting block (61), a third elastic member is fixedly connected between the intercepting block (61) and the sliding sleeve (52), and the intercepting block (61) is used to limit the telescopic end of the sliding sleeve (52) and the second push rod (51).

8. A lawn mowing device for landscaping according to claim 7, characterized in that include: A switching mechanism is arranged on the mounting ring (3) and is used to change the position of the cutting knife (9) so that the cutting knife (9) protrudes from the fixed shell (6), the switching mechanism comprising: A first sleeve (71) fixedly connected to the mounting ring (3); A first rod (72) is slidably connected in the first sleeve (71), the first rod (72) passes through the mounting ring (3), one end of the first rod (72) close to the cutting knife (9) is hinged to the mounting frame (8), the mounting frame (8) is slidably connected to the connecting shaft (7), the fixed shell (6) is provided with a limiting groove (73), the mounting frame (8) is located in the limiting groove (73) and slides, the limiting groove (73) is provided with a spiral portion and two straight groove portions, and the spiral portion is located between the two straight groove portions; A connecting assembly, arranged on the mounting ring (3), and used to place all the striking rods (41) on the same horizontal line; A control component is arranged on the hand-held rod (1) and is used to adjust the position of the first rod (72) so that it drives the installation frame (8) to move.

9. A lawn mowing device for landscaping according to claim 8, characterized in that: The connection component comprises: A second sleeve (81) fixedly connected to the mounting ring (3); A second rod (82) is slidably connected in the second sleeve (81); the second sleeve (81) is in communication with the first sleeve (71); the second rod (82) passes through the mounting ring (3) and the sliding sleeve (52); the second rod (82) is used to support the flexible sleeve (42) when the second rod (82) is inserted into the flexible sleeve (42).

10. A lawn mowing device for landscaping according to claim 9, characterized in that: The control component comprises: A third push rod (91) is fixedly connected to the hand-held rod (1); an oil transfer pipe (92) fixedly connected to and communicated with a fixed portion of the third push rod (91), the oil transfer pipe (92) passing through the mounting ring (3), the oil storage cylinder (21) and the drive frame (23), and the oil transfer pipe (92) being communicated with the second sleeve (81); A fourth push rod (93) is fixedly connected to the mounting ring (3), and a fixed portion thereof is in communication with the oil transfer pipe (92); The winding ring (94) is rotatably connected to the mounting ring (3); the telescopic end of the fourth push rod (93) and the winding ring (94) are driven by a gear rack; the nylon line (4) is slidably connected to the mounting ring (3); and the winding ring (94) is fixedly connected to the nylon line (4).

Images