A hedge trimmer

Abstract

The present invention provides a hedge trimmer, comprising a body: a blade assembly, which is arranged on the lower side of the body and is used for cutting green plants; a motor assembly, which is arranged in the body and is used for providing power; a transmission assembly, which is arranged between the motor assembly and the blade assembly and is used for converting the rotation of the output end of the motor assembly into the translation of the blade assembly, so that the blade assembly completes the cutting; a piston assembly, which is arranged at the side end of the motor assembly and is used for generating compressed gas and blowing it out; a sharpening assembly and a knife moving assembly are also provided, the knife moving assembly is used for separating the cutting blade from the mating blade, and the sharpening assembly is used for sharpening the cutting blade, thereby saving the time generated by disassembling the blade and reducing the cost of replacing the blade.

Description

Technical Field

[0001] The present invention relates to gardening tools, in particular to a hedge trimmer. Background Art

[0002] At present, a Chinese patent with the announcement number CN217564225U discloses a hedge trimmer, including a body, a blade and a blade holder. The blade is fixed below the blade holder, and one end of the blade and the blade holder is fixed to the body. The blade holder is also provided with a refueling assembly, an oil storage pot is provided on the body, and an oil pump switch is provided on the handle of the body. The hedge trimmer makes it more convenient to add lubricating oil to the blade and also improves work efficiency.

[0003] The above patent still has shortcomings. Hedge trimmers are usually used for trimming hedges, lawn edges and other greening projects. When in use, the sharpness of the hedge trimmer's blades determines the trimming efficiency and trimming effect. When the hedge trimmer's blades are too blunt, the blades need to be disassembled for grinding or replacement. On-site disassembly and grinding are more troublesome, and replacing the blades is too costly. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide a hedge trimmer having an automatic grinding function.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a hedge trimmer, comprising a body:

[0006] A blade assembly is provided on the lower side of the machine body and is used for cutting green plants;

[0007] a motor assembly, which is disposed in the fuselage and is used to provide power;

[0008] The transmission assembly is provided between the motor assembly and the blade assembly, and is used to convert the rotation of the output end of the motor assembly into the translation of the blade assembly, so that the blade assembly completes the cutting;

[0009] A piston assembly is provided at a side end of the motor assembly and is used to generate and blow out compressed gas;

[0010] Among them, the blade assembly includes an upper mounting frame, a lower mounting frame, a cutting blade and a mating blade. The mating blade and the cutting blade are respectively installed on the upper mounting frame and the lower mounting frame. A sharpening assembly and a knife moving assembly are also provided between the cutting blades. The knife moving assembly is used to separate the cutting blade from the mating blade, and the sharpening assembly is used to grind the cutting blade.

[0011] Through the above-mentioned technical means, by setting a transmission assembly between the motor assembly and the blade assembly, the rotational force is converted into a linear reciprocating motion, so that the cutting blade and the mating blade are caused to reciprocate linearly to complete the cutting. By setting a sharpening assembly and a knife moving assembly between the cutting blade and the mating blade, when the cutting blade needs to be sharpened, the cutting blade is separated from the mating blade by the moving assembly, and the sharpening assembly is moved to the cutting blade, and then the sharpening step is completed by the reciprocating linear motion of the cutting blade, which makes the blade sharpening more convenient, saves the time generated by disassembling the blade, and reduces the cost of replacing the blade.

[0012] Preferably, the upper mounting frame and the lower mounting frame are respectively provided with a plurality of positioning columns 1 and 2, and the mating blade and the cutting blade are both provided with long waist holes, the mating blade cooperates with the positioning column 1 and is slidably set at the lower end of the upper mounting frame, and the cutting blade cooperates with the positioning column 2 and is slidably set at the upper end of the lower mounting frame, both ends of the cutting blade are provided with blades, and both ends of the mating blade are provided with inclined pressure plates, the inclined pressure plates are in contact with the blades and cooperate with the blades for cutting, and the front ends of the upper mounting frame and the lower mounting frame are also provided with positioning frames.

[0013] Through the above technical means, the positions of the mating blade and the cutting blade are restricted by the cooperation between the positioning column 1, the positioning column 2 and the long waist hole, reducing their freedom, and the inclined pressure plate is pressed on the blade to provide space for the sharpening assembly.

[0014] Preferably, the sharpening assembly includes a sharpening frame 1, a sharpening frame 2 and a power piece, the side ends of the sharpening frame 1 and the sharpening frame 2 are provided with a bevel 1, the bevel 1 is adapted to the inner bevel of the inclined pressure plate, the bottoms of the sharpening frame 1 and the sharpening frame 2 are both provided with grinding discs, and the power piece drives the sharpening frame 1 and the sharpening frame 2 to move toward the cutting edges at both ends of the cutting blade.

[0015] Through the above technical means, the power parts drive the knife sharpening frame 1 and the knife sharpening frame 2 to move out, and the grinding disc is set to achieve the grinding of the tool. The inclined surface 1 is adapted to the inner side of the inclined pressure plate to assist in separating the matching blade and the cutting blade when the knife sharpening frame 1 and the knife sharpening frame 2 are moved out.

[0016] Preferably, the knife sharpening frame 1 is provided with a sliding plate 1 and a sliding plate 2, and the sliding plate 1 and the sliding plate 2 are both provided with a slider 1 and a slide groove 1, and the knife sharpening frame 2 is provided with a sliding plate 3 and a sliding plate 4, and the sliding plate 3 and the sliding plate 4 are both provided with a slider 2 and a slide groove 2, the slider 1 slides in cooperation with the slide groove 2, and the slider 2 slides in cooperation with the slide groove 1, and a cavity is formed between the sliding plate 1 and the sliding plate 3, and the power part includes a pipeline 1 and a pipeline switch arranged at the output end of the piston assembly, and the pipeline 1 is connected to the cavity.

[0017] Through the above technical means, through the cooperation between the slider 1 and the slide groove 2, and the cooperation between the slider 2 and the slide groove 1, the movement accuracy between the knife sharpening frame 1 and the knife sharpening frame 2 is increased, and a cavity is formed between the sliding plate 1 and the sliding plate 2, and gas is compressed into the cavity through the pipeline 1, thereby realizing the movement of the knife sharpening frame 1 and the knife sharpening frame 2 in a pneumatic manner.

[0018] Preferably, racks are provided on both the sliding plate 1 and the sliding plate 3, and a gear is further provided in the cavity, the gears are respectively engaged with the racks on the sliding plate 1 and the sliding plate 3, and the gears are rotatably provided on the side end surface of the sharpening frame 1.

[0019] By means of the above technical means, through the cooperation of the rack and the gear, the first and second sharpening frames are moved outward at equal distances, thereby preventing the problem that the sharpening frame on one side moves too much or too little due to external force, causing the sharpening frame one or the second sharpening frame to not move into place and causing the sharpening effect to deteriorate. At the same time, it is ensured that the first and second sharpening frames return to the center position when moving back, thereby preventing the problem that the cutting blade and the mating blade cannot be merged into place.

[0020] Preferably, the knife moving assembly includes a base block, a sealing plate and a push cylinder, the push cylinder is fixedly arranged in the base block, the sealing plate is arranged between the base block and the knife sharpening assembly, and an air duct is also arranged in the base block, and the air duct is connected to the pipeline and the cavity.

[0021] By means of the above technical means, the cutting blade and the mating blade are separated by controlling the push cylinder with gas, thereby completing the separation while pushing the first sharpening frame and the second sharpening frame outward.

[0022] Preferably, the output end of the piston assembly is also provided with pipeline 2, the pipeline 1 is arranged at the side end of pipeline 2 and is connected with pipeline 2, the input end of the piston assembly is provided with pipeline 3 and pipeline 4, the pipeline 4 is connected with the cavity, pipeline switches are provided in pipeline 2 and pipeline 3, the pipeline switch includes a one-way pressure valve, a spiral base and a limit rod, the one-way pressure valve is arranged in the spiral base, the spiral base and pipeline 2 and pipeline 3 are all threaded together, the end of the spiral base is also rotatably provided with a limit frame, a limit waist groove is provided on the limit frame, the limit rod is fixedly connected to pipeline 2 and pipeline 3 and passes through the limit waist groove on the internal limit frame.

[0023] Through the above technical means, by setting up pipeline two, the compressed air generated in the piston assembly is discharged, and the cut waste branches and leaves can be blown out when the hedge trimmer is operating. By setting up a spiral base, when it is necessary to sharpen the knife, pipeline two is connected with pipeline one, so that the gas enters the cavity. When the hedge trimmer is working normally, pipeline two can be blocked by the spiral base. After the knife sharpening is completed, pipeline three and pipeline four are connected to each other, so that the gas can be extracted from the cavity. By setting up a one-way pressure valve, a protection mechanism can be realized when the pressure in the cavity is too high or too low, so that the gas passes through the one-way pressure valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of an embodiment;

[0025] Figure 2 It is a partial schematic diagram of an embodiment;

[0026] Figure 3 A partial cross-sectional view of an embodiment;

[0027] Figure 4 Schematic diagram of the structure of the piston assembly;

[0028] Figure 5 It is a structural diagram of the pipeline switch;

[0029] Figure 6 is a cross-sectional schematic diagram of the knife sharpening assembly when it is retracted;

[0030] Figure 7 It is a cross-sectional schematic diagram of the sharpening assembly in the sharpening state;

[0031] Figure 8 is a schematic cross-sectional view of a knife sharpening assembly;

[0032] Figure 9 It is a schematic diagram of the structure of the knife sharpening assembly and the knife moving assembly;

[0033] Figure 10 This is a structural diagram of pipeline 2.

[0034] Figure numerals: 1, fuselage; 2, motor assembly; 21, gear 1; 3, transmission assembly; 31, gear 2; 32, rocker arm 2; 33, eccentric wheel; 4, piston assembly; 41, piston sleeve; 42, piston rod; 43, pipeline 2; 44, pipeline 3; 45, pipeline 4; 46, pipeline switch; 47, one-way pressure valve; 48, spiral base; 49, limit rod; 410, limit frame; 411, limit waist groove; 412, piston body; 5, blade assembly; 51, upper mounting frame; 52, lower mounting frame; 53, cutting blade; 531, blade; 54, matching blade; 55, positioning column 1; 56, Positioning column two; 57, long waist hole; 58, inclined pressure plate; 59, positioning frame; 510, handwheel; 6, grinding assembly; 61, grinding frame one; 62, grinding frame two; 63, power part; 64, inclined support plate; 65, grinding disc; 66, sliding plate one; 67, sliding plate two; 68, slider one; 69, slide groove one; 610, sliding plate three; 611, sliding plate four; 612, slider two; 613, slide groove two; 614, cavity; 615, side plate; 616, pipeline one; 618, rack; 619, gear three; 7, tool moving assembly; 71, base block; 72, sealing plate; 73, push cylinder; 74, airway. DETAILED DESCRIPTION

[0035] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0036] A hedge trimmer, comprising a body 1:

[0037] a blade assembly 5 , which is provided on the lower side of the body 1 and is used for cutting green plants;

[0038] The motor assembly 2 is provided in the body 1 and is used to provide power. The motor assembly 2 includes a motor, a battery, and a circuit board. A gear 1 21 is provided at the output end of the motor.

[0039] The transmission assembly 3 is arranged between the motor assembly 2 and the blade assembly 5, and is used to convert the rotation of the output end of the motor assembly 2 into the translation of the blade assembly 5, so that the blade assembly 5 completes the cutting. The transmission assembly 3 includes a second gear 31 and a second rocker 32. The lower end of the second gear 31 is provided with a lower eccentric wheel 33. The second rocker 32 is sleeved on the lower eccentric wheel 33 and can slide on the lower eccentric wheel 33;

[0040] The piston assembly 4 is arranged at the side end of the motor assembly 2 and is used to generate compressed gas and blow it out. It includes a piston sleeve 41, a piston body 412 and a piston rod 42. The piston body 412 is arranged at the top of the piston rod 42, and a one-way valve is arranged inside it. A rocker arm three is provided at the piston rod 42. The rocker arm three is connected to the output end of the motor through an eccentric wheel 33. When the motor rotates, it drives the piston rod 42 to perform linear reciprocating motion. The connection between the piston assembly 4 and the transmission assembly 3 is different. The output end of the motor can be controlled by the circuit board to engage with one of the transmission assembly 3 and the piston assembly 4 alone or together.

[0041] Among them, the blade assembly 5 includes an upper mounting frame 51, a lower mounting frame 52, a cutting blade 53 and a mating blade 54. The mating blade 54 and the cutting blade 53 are respectively mounted on the upper mounting frame 51 and the lower mounting frame 52. The cutting blade 53 is hinged to the rocker arm 2 32. A sharpening assembly 6 and a knife moving assembly 7 are also provided between the cutting blades 53. The knife moving assembly 7 is used to separate the cutting blade 53 from the mating blade 54. The sharpening assembly 6 is used to grind the cutting blade 53. When the cutting blade 53 needs to be polished, the cutting blade 53 is separated from the mating blade 54 by the moving assembly, and the sharpening assembly 6 is moved to the cutting blade 53. The polishing step is then completed by the reciprocating linear motion of the cutting blade 53, which makes the polishing of the blade more convenient, saves the time generated by disassembling the blade, and reduces the cost of replacing the blade.

[0042] The upper mounting frame 51 and the lower mounting frame 52 are respectively provided with a plurality of positioning posts 1 55 and positioning posts 2 56. The matching blade 54 and the cutting blade 53 are both provided with a long waist hole 57. The matching blade 54 cooperates with the positioning post 1 55 and is slidably arranged at the lower end of the upper mounting frame 51. The cutting blade 53 cooperates with the positioning post 2 56 and is slidably arranged at the upper end of the lower mounting frame 52. Both ends of the cutting blade 53 are provided with a blade. Both ends of the matching blade 54 are provided with an inclined pressure plate 58. The inclined pressure plate 58 is in contact with the blade and cooperates with the blade to cut. The front end and rear end of the upper mounting frame 51 and the lower mounting frame 52 are A positioning frame 59 is also provided at the end, and a handwheel 510 is provided at the bottom of the positioning frame 59. The handwheel 510 and the positioning frame 59 are fixed by threads. By rotating the handwheel 510, the lower mounting frame 52 can be moved upward by the screw at the tail of the handwheel 510. The positioning frame 59 is fixed on the upper mounting frame 51, and the lower mounting frame 52 is slidably set on the positioning frame 59. Through the cooperation between the positioning column 1 55 and the positioning column 2 56 and the long waist hole 57, the position of the mating blade 54 and the cutting blade 53 is limited, and their left and right freedom is limited. The inclined pressure plate 58 presses on the blade to provide space for the sharpening assembly 6.

[0043] The sharpening assembly 6 includes a sharpening frame 1 61, a sharpening frame 2 62 and a power piece 63. An inclined support plate 64 is provided at the side ends of the sharpening frame 1 61 and the sharpening frame 2 62. The inclined support plate 64 forms an inclined surface 1, and the inclined surface 1 is adapted to the inner inclined surface of the inclined pressure plate 58. A grinding disc 65 is provided at the bottom of the sharpening frame 1 61 and the sharpening frame 2 62. The power piece 63 drives the sharpening frame 1 61 and the sharpening frame 2 62 to move toward the blades at both ends. At this time, the inclined surface 1 is against the inner side of the inclined pressure plate 58. When continuing to move outward, the auxiliary knife moving assembly 7 controls the separation of the mating blade 54 and the cutting blade 53.

[0044] The sharpening frame 1 61 is provided with a sliding plate 1 66 and a sliding plate 2 67, and the sliding plate 1 66 and the sliding plate 2 67 are both provided with a slider 1 68 and a chute 1 69. The sharpening frame 2 62 is provided with a sliding plate 3 610 and a sliding plate 4 611, and the sliding plate 3 610 and the sliding plate 4 611 are both provided with a slider 2 612 and a chute 2 613. The slider 1 68 slides with the chute 2 613, and the slider 2 612 slides with the chute 1 6 9 cooperates with sliding, and a cavity 614 is formed between the sliding plate 1 66 and the sliding plate 3 610. The knife moving assembly 7 is arranged at both ends of the knife sharpening frame 1 61 and the knife sharpening frame 2 62. The side ends of the knife sharpening frame 1 61 and the knife sharpening frame 2 62 are both provided with side plates 615. The power member 63 includes a pipeline 1 616 and a pipeline switch 46 arranged at the output end of the piston assembly 4. The pipeline 1 616 is connected to the cavity 614. The knife moving assembly 7 includes a base block 71, The sealing plate 72 and the push cylinder 73 are fixedly arranged in the base block 71, and the sealing plate 72 is arranged between the base block 71 and the sharpening assembly 6. An air channel 74 is also provided in the base block 71, and the air channel 74 is connected to the pipeline 1 616 and the cavity 614. The sealing plate 72 cooperates with the side plate 615 to ensure that the cavity 614 remains in a sealed state after the sharpening frame 1 61 and the sharpening frame 2 62 move outward. Through the cooperation of the slider 1 68 and the slide groove 2 613, and the cooperation of the slider 2 612 and the slide groove 1 69, the moving accuracy between the sharpening frame 1 61 and the sharpening frame 2 62 is increased, and at the same time, it is ensured that the sharpening frame 1 61 and the sharpening frame 2 62 will not separate. The cavity 614 is formed between the sliding plate 1 66 and the sliding plate 2 67, and the gas is compressed into the cavity 614 through the pipeline 1 616, so that the movement of the sharpening frame 1 61 and the sharpening frame 2 62 is realized pneumatically.

[0045] Racks 618 are provided on both the sliding plate 1 66 and the sliding plate 3 610, and a gear 619 is further provided in the cavity 614. The gear 619 meshes with the racks 618 on the sliding plate 1 66 and the sliding plate 3 610 respectively. The gear 619 is rotatably set on the side end surface of the sharpening frame 1 61. Through the cooperation of the rack 618 and the gear 619, the sharpening frame 1 61 and the sharpening frame 2 62 are moved outward at equal distances, preventing the sharpening frame 1 61 or the sharpening frame 2 62 from moving out of place due to external force, causing the sharpening frame 1 61 or the sharpening frame 2 62 to move out of place and causing the sharpening effect to deteriorate. At the same time, it ensures that the sharpening frame 1 61 and the sharpening frame 2 62 return to the center position when moving back, preventing the cutting blade 53 and the mating blade 54 from being unable to merge into place.

[0046] The output end of the piston assembly 4 is also provided with a second pipeline 43, and the first pipeline 616 is provided at the side end of the second pipeline 43 and is connected to the second pipeline 43. The input end of the piston assembly 4 is provided with a third pipeline 44 and a fourth pipeline 45. The fourth pipeline 45 is connected to the cavity 614. The second pipeline 43 and the third pipeline 44 are both provided with a pipeline switch 46. The pipeline switch 46 includes a one-way pressure valve 47, a spiral base 48 and a limit rod 49. The one-way pressure valve 47 is provided in the spiral base 48. The spiral base 48 is threadedly matched with the second pipeline 43 and the third pipeline 44. The end of the spiral base 48 is also rotatably provided with a limit frame 410. The limit frame 410 is provided with a limit waist groove 411. The limit rod 49 is fixedly connected to the second pipeline 43 and the third pipeline 44 and passes through the limit waist groove 411 on the internal limit frame 410. By setting the second pipeline 43, The compressed air generated in the piston assembly 4 is discharged, and the cut waste branches and leaves can be blown out when the hedge trimmer is working. By setting the spiral base 48, when sharpening is required, the pipeline 2 43 is connected to the pipeline 1 616, so that the gas enters the cavity 614. When the hedge trimmer is working normally, the spiral base 48 can be used to block the pipeline 2 43. When the sharpening is completed, the gas can be extracted from the cavity 614 by connecting the pipeline 3 44 with the pipeline 4 45. The one-way pressure valve 47 is composed of a tapered hole, a spring and a steel ball. The compression force of the spring determines the overload pressure of the one-way pressure valve 47. When the pressure in the cavity 614 is too large or too small, the compression force of the spring fails and pressure relief is achieved. By setting the one-way pressure valve 47, a protection mechanism can be realized when the pressure in the cavity 614 is too high or too low, so that the gas can complete pressure relief through the one-way pressure valve 47.

[0047] The following is the operating process of sharpening the blade of the hedge trimmer. First, turn on the motor to start the piston assembly 4. Then rotate the handle downward to move the stud at the end of the handle downward. Then rotate the spiral base 48 in the pipe 2 43 to connect the pipe 1 616 with the pipe 2 43. At this time, the air pressure generated by the piston assembly 4 enters the cavity 614. The pressure in the cavity 614 gradually increases. At this time, the sharpening frame 1 61 and the sharpening frame 2 62 move to the left and right sides respectively. At the same time, the output end of the push cylinder 73 pushes upward to separate the cutting blade 53 from the mating blade 54. After the movement is completed, the grinding disc 6 5 is at the cutting edge. At this time, the motor is controlled to drive the transmission assembly 3 to drive the cutting blade 53 to perform linear reciprocating motion to complete the sharpening. When the sharpening is completed, the spiral base 48 in the second pipe 43 is screwed in to cut off the first pipe 616 from the second pipe 43. Then the spiral base 48 in the third pipe 44 is screwed out to connect the third pipe 44 with the fourth pipe 45. At this time, the piston assembly 4 draws out the gas in the cavity 614 during movement, thereby retracting the first sharpening frame 61 and the second sharpening frame 62. After completion, the spiral base 48 in the third pipe 44 is screwed back, and finally the handle is screwed back.

[0048] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A hedge trimmer, characterized in that: Including the body (1): a blade assembly (5), which is arranged on the lower side of the body (1) and is used for cutting green plants; a motor assembly (2), which is disposed in the fuselage (1) and is used to provide power; A transmission assembly (3) is arranged between the motor assembly (2) and the blade assembly (5) and is used to convert the rotation of the output end of the motor assembly (2) into the translation of the blade assembly (5), so that the blade assembly (5) completes the cutting; A piston assembly (4) is provided at a side end of the motor assembly (2) and is used to generate and blow out compressed gas; The blade assembly (5) comprises an upper mounting frame (51), a lower mounting frame (52), a cutting blade (53) and a matching blade (54); the matching blade (54) and the cutting blade (53) are respectively mounted on the upper mounting frame (51) and the lower mounting frame (52); a sharpening assembly (6) and a knife moving assembly (7) are further arranged between the cutting blades (53); the knife moving assembly (7) is used to separate the cutting blade (53) from the matching blade (54); and the sharpening assembly (6) is used to sharpen the cutting blade (53); The upper mounting frame (51) and the lower mounting frame (52) are respectively provided with a plurality of positioning posts (55) and positioning posts (56), and the mating blade (54) and the cutting blade (53) are both provided with long waist holes (57). The mating blade (54) is matched with the positioning post (55) and is slidably arranged at the lower end of the upper mounting frame (51), and the cutting blade (53) is matched with the positioning post (56) and is slidably arranged at the upper end of the lower mounting frame (52). Both ends of the cutting blade (53) are provided with blades, and both ends of the mating blade (54) are provided with inclined pressure plates (58), and the inclined pressure plates (58) are in contact with the blade and cooperate with the blade to cut. The front ends of the upper mounting frame (51) and the lower mounting frame (52) are also provided with positioning frames (59); The sharpening assembly (6) comprises a sharpening frame (61), a sharpening frame (62) and a power member (63). The side ends of the sharpening frame (61) and the sharpening frame (62) are provided with an inclined surface (61), and the inclined surface (61) is adapted to the inner inclined surface of the inclined pressure plate (58). The bottoms of the sharpening frame (61) and the sharpening frame (62) are both provided with a grinding disc (65). The power member (63) drives the sharpening frame (61) and the sharpening frame (62) to move toward the cutting edges at both ends of the cutting blade (53).

2. A hedge trimmer according to claim 1, characterized in that: The first grinding rack (61) is provided with a sliding plate (66) and a second sliding plate (67), and the first sliding plate (66) and the second sliding plate (67) are both provided with a slider (68) and a chute (69), and the second grinding rack (62) is provided with a sliding plate (610) and a fourth sliding plate (611), and the third sliding plate (610) and the fourth sliding plate (611) are both provided with a slider (612) and a chute (61 3), the slider 1 (68) slides in cooperation with the slide groove 2 (613), the slider 2 (612) slides in cooperation with the slide groove 1 (69), a cavity (614) is formed between the sliding plate 1 (66) and the sliding plate 3 (610), the power member (63) includes a pipeline 1 (616) and a pipeline switch (46) arranged at the output end of the piston assembly (4), and the pipeline 1 (616) is connected to the cavity (614).

3. A hedge trimmer according to claim 2, characterized in that: The sliding plate 1 (66) and the sliding plate 3 (610) are both provided with a rack (618), and a gear (619) is also provided in the cavity (614). The gear (619) is respectively engaged with the racks (618) on the sliding plate 1 (66) and the sliding plate 3 (610), and the gear (619) is rotatably provided on the side end surface of the sharpening frame 1 (61).

4. A hedge trimmer according to claim 2, characterized in that: The knife moving assembly (7) includes a base block (71), a sealing plate (72) and a push cylinder (73), wherein the push cylinder (73) is fixedly arranged in the base block (71), and the sealing plate (72) is arranged between the base block (71) and the knife sharpening assembly (6). An air passage (74) is also arranged in the base block (71), and the air passage (74) is communicated with the pipeline 1 (616) and the cavity (614).

5. A hedge trimmer according to claim 2, characterized in that: The output end of the piston assembly (4) is further provided with a second pipeline (43), the first pipeline (616) is provided at the side end of the second pipeline (43) and is in communication with the second pipeline (43), the input end of the piston assembly (4) is provided with a third pipeline (44) and a fourth pipeline (45), the fourth pipeline (45) is in communication with the cavity (614), and pipeline switches (46) are provided in both the second pipeline (43) and the third pipeline (44), the pipeline switches (46) comprising a one-way pressure valve (47), a spiral base (48) and a limit valve. The one-way pressure valve (47) is arranged in a spiral base (48), and the spiral base (48) is threadedly matched with the second pipeline (43) and the third pipeline (44). The end of the spiral base (48) is also rotatably provided with a limiting frame (410), and a limiting waist groove (411) is provided on the limiting frame (410). The limiting rod (49) is fixedly connected with the second pipeline (43) and the third pipeline (44) and passes through the limiting waist groove (411) on the internal limiting frame (410).

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