Disc type mower cutter special for airport and disc type mower using cutter

Abstract

The invention relates to the technical field of mowing equipment, in particular to a special disc type mower cutter for an airport and a disc type mower using the cutter. According to the technical scheme, the device comprises a shell and further comprises a connecting disc, transverse plates are symmetrically and fixedly connected to the inner wall of the shell, the connecting disc is fixedly connected to the tops of the transverse plates, an annular sliding groove is formed in the outer wall of the connecting disc, a plurality of evenly-distributed first cutting knives are slidably connected into the annular sliding groove, and second cutting knives are hinged to the bottoms of the first cutting knives. Through the design of the self-adaptive mechanism, the height of the first cutting knife can be self-adaptively adjusted, two rolling wheels at the bottom end of a [-shaped frame make contact with lawn soil, the two rolling wheels can fluctuate along with the lawn soil, the [-shaped frame drives two first piston rods to vertically move, a shell and the first cutting knife move up and down, and therefore the lawn can be conveniently cut. Through the design of the gathering mechanism, skew grass can be lifted up through the gathering shaft, and the situation that the skew grass cannot be trimmed by the first cutting knife is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of lawn mowing equipment, in particular to a special disc mower cutter for airports and a disc mower using the cutter. Background Art

[0002] Lawn mowers are mainly used in airports for lawn mowing and maintenance work in the airfield. Regular mowing of the lawn in the airfield can make the overall environment of the airport more tidy and beautiful, enhance the image of the airport, and help reduce the risk of bird strikes on aircraft, ensuring flight safety.

[0003] After rainfall, the airport lawn will experience soil erosion due to rain, causing the lawn to collapse in a small area, causing the disc mower to rise and fall as it moves on the lawn. The disc mower's blades will rise and fall with the disc mower, resulting in uneven mowed lawn, which reduces the lawn's aesthetics. The lawn will be tilted after being blown by strong winds, causing the disc mower's cutting blades to be unable to make good contact with the grass. In addition, in order to ensure the consistency of the lawn mowing length, the disc mower needs to pass over the mowed lawn again during the process of moving back and forth, which is inefficient. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a disc mower cutter for airports and a disc mower using the cutter. Technical solution: A disc mower tool for airports, comprising a shell and a connecting plate, wherein the inner wall of the shell is symmetrically fixed with a horizontal plate, the top of the horizontal plate is fixed with the connecting plate, the outer wall of the connecting plate is provided with an annular slide groove, a plurality of evenly distributed first cutting knives are slidably connected in the annular slide groove, the bottoms of the plurality of first cutting knives are hingedly connected to the second cutting knives, a second sliding groove is provided on one side of the second cutting knife, a third cutting knife is slidably connected in the second sliding groove, a connecting frame is fixedly connected to one side of the third cutting knife, and a connecting rod is hingedly connected to the top of the connecting frame.

[0005] In addition, it is particularly preferred that a driving motor is further included. The driving motors are symmetrically installed on the top of the housing. The output shaft of the driving motor rotatably penetrates through the housing and is rotatably and fixedly connected to the top end of the connecting disk. A cross plate is fixedly sleeved on the outer wall of the output shaft of the driving motor. A plurality of uniformly distributed first sliding grooves are formed in a penetrating manner on the top of the cross plate. A first sliding shaft is slidably connected in each of the plurality of first sliding grooves. A first elastic member is arranged between the first sliding shaft and the inner wall of the first sliding groove. The top end of the first sliding shaft is slidably and penetratingly connected with an I-shaped shaft. A second elastic member is arranged between the I-shaped shaft and the top end of the first sliding shaft. A first annular track is formed at the top end of the connecting disk. The bottom end of the I-shaped shaft is clamped into the first annular track and slides therein. A lifting plate is movably sleeved on the outer wall of the output shaft of the driving motor. A lead screw is rotatably connected to the top of the lifting plate. The lead screw penetrates through and is threadedly connected to the housing. A guiding track is fixedly connected to the top end of the connecting disk. The outer wall of the first sliding shaft contacts the inner wall of the guiding track.

[0006] In addition, it is particularly preferred that a guiding frame is further included. A guiding frame is fixedly sleeved on the outer wall of the first sliding shaft. A second sliding shaft is slidably connected to the inner wall of the guiding frame. A second annular track is formed at the top of the connecting disk. The bottom end of the second sliding shaft is clamped into the second annular track and slides therein. A short shaft is fixedly connected to the top end of the second sliding shaft. A wedge-shaped block for cooperating with the short shaft is fixedly connected to the top of the connecting rod. One end of the connecting rod is rotatably connected to the outer wall of the first sliding shaft.

[0007] In addition, it is particularly preferred that a lawn mowing cart is included. An adaptive mechanism is arranged on the lawn mowing cart. The adaptive mechanism includes a pump body. A fixing frame is fixedly connected to the front side of the lawn mowing cart. The pump body is fixedly connected to the front side of the fixing frame. First branch pipes are symmetrically communicated with both sides of the pump body. A first piston rod is slidably connected to the inner wall of the first branch pipe. The top ends of the two first piston rods are fixedly connected together to form a U-shaped frame. Wheels are symmetrically and rotatably connected to the bottom end of the U-shaped frame. A second piston rod is slidably connected to the inner wall of the pump body. The bottom end of the second piston rod is fixedly connected to the housing. Guide plates are symmetrically fixedly connected to the bottom of the fixing frame. Guide shafts are symmetrically fixedly connected to the top of the housing. The guide shafts penetrate through and are slidably connected to the guide plates and the U-shaped frame.

[0008] In addition, it is particularly preferred that the adaptive mechanism further includes a second branch pipe. The second branch pipe is communicated with the front side of the pump body. One end of the second branch pipe is threadedly connected with a screw rod. One end of the screw rod is rotatably connected to a piston plate. The piston plate is slidably connected to the inner wall of the second branch pipe.

[0009] In addition, it is particularly preferred that an anti-falling mechanism is further included. The anti-falling mechanism includes a rectangular block. The rectangular block is fixedly connected to the outer wall of the C-shaped frame. The top end of the pump body is fixedly connected to a rectangular box. The rectangular block is slidably connected to the inner wall of the rectangular box. A ratchet pawl is hinged to the bottom of the rectangular block. A number of uniformly distributed ratchet teeth are fixedly connected to the inner wall of the rectangular box. The ratchet pawl is used in cooperation with the number of ratchet teeth.

[0010] In addition, it is particularly preferred that a gathering mechanism is further included. The gathering mechanism includes a horizontal shaft. The inner wall of the housing is symmetrically and movably connected through two of the horizontal shafts. A number of uniformly distributed guide grooves are formed on the outer wall of the horizontal shaft. A gathering shaft is slidably connected in each of the number of guide grooves.

[0011] In addition, it is particularly preferred that the gathering mechanism further includes a wind guiding disc. The wind guiding discs are symmetrically fixedly connected to the inner wall of the housing. The output shaft of the driving motor is rotatably connected to the wind guiding disc through it. A negative pressure fan blade is fixedly sleeved on the output shaft of the driving motor. Two groups of ventilation holes are symmetrically formed through the top of the housing. A first air duct is connected to the bottom of one of the wind guiding discs. A second air duct is connected to the bottom of the other wind guiding disc. One end of the first air duct and one end of the second air duct are both fixedly connected to the housing through it and are respectively connected to a third air duct. The third air duct is fixedly connected to the outer wall of the housing. A first impeller is rotatably connected to the inner wall of the third air duct. A telescopic rod is fixedly connected to the outer wall of the rotating shaft of the first impeller through a mounting plate. The telescopic end of the telescopic rod is fixedly connected to a rectangular frame. The rectangular frame is slidably connected to the outer wall of the horizontal shaft. The gathering shaft is slidably connected to the inner wall of the rectangular frame.

[0012] In addition, it is particularly preferred that a guide block is further included. A cylindrical groove is formed at one end of the rotating shaft of the first impeller. The guide block is fixedly connected to the inner wall of the cylindrical groove. A sliding groove is formed on the outer wall of one end of the horizontal shaft. The guide block is snapped into the sliding groove and slides therein.

[0013] In addition, it is particularly preferred that a second impeller is further included. The second impeller is rotatably connected to the inner wall of the third air duct. The rotating shaft of the second impeller rotatably penetrates through the third air duct and is fixedly connected to a first conical wheel. Mounting frames are symmetrically fixedly connected to the inner wall of the housing. A second conical wheel is rotatably connected to the inner wall of the mounting frame. The second conical wheel is in contact with the first conical wheel. A rotating roller is rotatably connected through the mounting frame. The rotating roller is rotatably connected to the second conical wheel through it. A number of uniformly distributed protruding shafts are fixedly connected to the outer wall of the rotating roller. Beneficial effects

[0014] 1. Through the design of the adaptive mechanism, the present invention can adaptively adjust the height of the first cutter. The two rollers at the bottom end of the C-shaped frame contact the lawn soil. The two rollers can move vertically with the undulation of the lawn soil, causing the C-shaped frame to drive the two first piston rods to move vertically, and enabling the outer shell and the first cutter to move up and down. By moving the first cutter up and down, the height of the trimmed lawn can be made more uniform, improving the aesthetic degree of the airport lawn. Through the design of the gathering mechanism, the skewed grass can be lifted by the gathering shaft, preventing the skewed grass from not being trimmed by the first cutter.

[0015] 2. Through the design of the anti-falling mechanism, when the two rollers at the bottom end of the C-shaped frame pass through a small pit, the pawl can rotate due to inertia and contact several ratchet teeth in the rectangular box, thereby limiting the C-shaped frame and preventing the first cutter from rising too high, resulting in the lawn being trimmed too short by the first cutter.

[0016] 3. Through the design of the first sliding shaft, when the first sliding shaft slides along the inner wall with equal radius of the guiding track, the first cutter, the second cutter, and the third cutter are all in a horizontal state. When the first sliding shaft slides to the V-shaped inner wall of the guiding track, the second cutter can rotate downward with the connection point with the first cutter as the center, enabling the second cutter and the third cutter to trim the lawn at the edge of the outer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is an installation schematic diagram at the connection disk of the present invention; Figure 3 is an installation schematic diagram at the first cutter of the present invention; Figure 4 is an installation schematic diagram at the second cutter of the present invention; Figure 5 is an installation schematic diagram at the I-shaped shaft of the present invention; Figure 6 is a schematic structural diagram of the adaptive mechanism of the present invention; Figure 7 is an installation schematic diagram at the first piston rod of the present invention; Figure 8 is an installation schematic diagram at the pawl of the present invention; Figure 9 is an installation schematic diagram at the third air duct of the present invention; Figure 10 is an installation schematic diagram at the negative pressure fan blade of the present invention; Figure 11 is an installation schematic diagram at the first impeller of the present invention; Figure 12 is an installation schematic diagram at the guide block of the present invention.

[0018] Parts names and serial numbers in the figure: 1_mower, 201_pump body, 2011_fixed frame, 202_first branch pipe, 203_first piston rod, 204_second piston rod, 205_housing, 206_connection plate, 207_first cutting knife, 208_horizontal axis, 209_gathering axis, 301_second branch pipe, 302_screw, 303_piston plate, 304_shaped frame, 305_rectangular block, 306_rectangular box, 307_pawl, 308_guide plate, 309_guide shaft, 401_drive motor, 402_cross plate, 403_first sliding shaft, 4031_ I-shaped shaft, 4032_lifting plate, 404_guide rail, 405_second cutting knife, 406_third cutting knife, 407_connecting frame, 408_connecting rod, 501_guide frame, 502_second sliding shaft, 503_short shaft, 504_wedge block, 601_air guide plate, 602_negative pressure fan blade, 603_first air guide pipe, 604_second air guide pipe, 6041_third air guide pipe, 605_first impeller, 606_rectangular frame, 701_guide block, 801_second impeller, 802_first conical wheel, 803_mounting frame, 804_second conical wheel, 805_rotating roller. DETAILED DESCRIPTION

[0019] The preferred technical solutions of the present invention will be described in detail below with reference to the accompanying drawings. Example 1

[0020] A disc mower cutter for airports and a disc mower using the cutter, such as Figure 1-Figure 4 As shown, it includes a shell 205 and a connecting plate 206. The inner wall of the shell 205 is symmetrically fixed with a horizontal plate, and the top of the horizontal plate is fixed with the connecting plate 206. The outer wall of the connecting plate 206 is provided with an annular slide groove, and four evenly distributed first cutting knives 207 are slidably connected in the annular slide groove. The bottoms of the four first cutting knives 207 are hinged with a second cutting knife 405, and the second cutting knife 405 can only rotate downward. A second sliding groove is provided on one side of the second cutting knife 405, and a third cutting knife 406 is slidably connected in the second sliding groove. One side of the third cutting knife 406 is fixed with a connecting frame 407, and the top of the connecting frame 407 is hinged with a connecting rod 408. When the connecting rod 408 is tilted, the second cutting knife 405 and the third cutting knife 406 can be rotated downward to cut the grass at the bottom edge of the shell 205.

[0021] like Figure 3-Figure 5The present invention also includes a driving motor 401, and the driving motor 401 is symmetrically installed on the top of the shell 205. The output shaft of the driving motor 401 rotatably penetrates the shell 205 and is rotatably fixed to the top of the connecting plate 206. The outer wall of the output shaft of the driving motor 401 is fixedly sleeved with a cross plate 402. The cross plate 402 is located on the upper side of the connecting plate 206. Four evenly distributed first sliding grooves are opened on the top of the cross plate 402. The four first sliding grooves are all slidably connected with the first sliding shaft 403. A first elastic member is provided between the first sliding shaft 403 and the inner wall of the first sliding groove. The first elastic member is a tension spring. The top of the first sliding shaft 403 is slidably connected with An I-shaped shaft 4031 is provided with a second elastic member between the I-shaped shaft 4031 and the top of the first sliding shaft 403. The second elastic member is a compression spring. A first annular track is provided at the top of the connecting plate 206. The bottom end of the I-shaped shaft 4031 is stuck in the first annular track and slides therein. A lifting plate 4032 is movably sleeved on the outer wall of the output shaft of the driving motor 401. The top of the lifting plate 4032 is rotatably connected to a lead screw, which is threadedly connected to the outer shell 205. A guide track 404 is fixed to the top of the connecting plate 206. Part of the inner wall radius of the guide track 404 is equal, and part of the inner wall is V-shaped. The outer wall of the first sliding shaft 403 is in contact with the inner wall of the guide track 404.

[0022] like Figure 4 and Figure 5 As shown, it also includes a guide frame 501, a guide frame 501 is fixedly sleeved on the lower part of the outer wall of the first sliding shaft 403, and the inner wall of the guide frame 501 is slidably connected to the second sliding shaft 502, and a second annular track is opened on the top of the connecting plate 206, the radius of the second annular track is greater than the radius of the first annular track, the bottom end of the second sliding shaft 502 is stuck in the second annular track of the connecting plate 206 and slides therein, the top of the second sliding shaft 502 is fixedly connected to the short shaft 503, and the top of the connecting rod 408 is fixedly connected to a wedge block 504 used in conjunction with the short shaft 503, and the short shaft 503 can make the second cutting knife 405 rotate downward with the connection point of the first cutting knife 207 as the center of the circle by squeezing the inclined surface of the wedge block 504, and one end of the connecting rod 408 is rotatably connected to the outer wall of the first sliding shaft 403.

[0023] like Figure 1 、 Figure 6 and Figure 7As shown in the figure, it includes a lawn mower 1, on which an adaptive mechanism is provided. The adaptive mechanism includes a pump body 201. A fixed frame 2011 is fixedly connected to the front side of the lawn mower 1, and the pump body 201 is fixedly connected to the front side of the fixed frame 2011. The two sides of the pump body 201 are symmetrically connected with first branch pipes 202. The inner wall of the first branch pipe 202 is vertically slidably connected with a first piston rod 203. The tops of the two first piston rods 203 are jointly fixedly connected with a U-shaped frame 304. The bottom end of the U-shaped frame 304 is symmetrically rotatably connected with rollers for contacting the surface of the lawn soil. The inner wall of the pump body 201 is vertically slidably connected with a second piston rod 204. The bottom end of the second piston rod 204 is fixedly connected to the housing 205. The bottom of the fixed frame 2011 is symmetrically fixedly connected with guide plates 308, and the top of the housing 205 is symmetrically fixedly connected with guide shafts 309. The guide shafts 309 are slidably connected to the guide plates 308 and the U-shaped frame 304 in a penetrating manner.

[0024] As Figure 7 shown, the adaptive mechanism further includes a second branch pipe 301. The front side of the pump body 201 is connected with the second branch pipe 301. The interiors of the pump body 201, the first branch pipes 202 and the second branch pipe 301 are all filled with liquid. The front end of the second branch pipe 301 is threadedly connected with a screw rod 302. The rear end of the screw rod 302 is rotatably connected with a piston plate 303. The piston plate 303 is slidably connected to the inner wall of the second branch pipe 301.

[0025] As Figure 7 shown, it further includes an anti-falling mechanism. The anti-falling mechanism includes a rectangular block 305. The middle bottom of the outer wall of the U-shaped frame 304 is fixedly connected with the rectangular block 305. The top of the pump body 201 is fixedly connected with a rectangular box 306. The rectangular block 305 is slidably connected to the inner wall of the rectangular box 306. The rear side of the bottom of the rectangular block 305 is hinged with a ratchet 307. A number of uniformly distributed ratchet teeth are fixedly connected to the inner wall of the rectangular box 306. The ratchet 307 is used in cooperation with a number of ratchet teeth. When the ratchet 307 contacts a number of ratchet teeth, the U-shaped frame 304 can be limited through the rectangular block 305.

[0026] As Figure 6 shown, it further includes a gathering mechanism for gathering the skewed grass upward. The gathering mechanism includes a cross shaft 208. The inner walls of the housing 205 are symmetrically and penetratingly movably connected with two cross shafts 208. The two cross shafts 208 face in opposite directions and are horizontally offset. A number of groups of uniformly distributed guide grooves are formed on the outer wall of the cross shaft 208. Gathering shafts 209 are slidably connected in a number of groups of guide grooves. [[ID=])

[0027] As Figure 2 、 Figure 3 shown, Figures 9-11 ​​As shown, the gathering mechanism also includes an air guide plate 601, and the air guide plate 601 is symmetrically fixed to the top of the inner wall of the shell 205. The output shaft of the drive motor 401 is rotatably connected to the air guide plate 601. A negative pressure fan blade 602 is fixed on the output shaft of the drive motor 401. Two groups of air vents are symmetrically opened on the top of the shell 205, each group of two. The bottom of the air guide plate 601 on the left is connected to the first air guide pipe 603, and the bottom of the air guide plate 601 on the right is connected to the second air guide pipe 604. One end of the first air guide pipe 603 and one end of the second air guide pipe 604 are both penetrated. The third air duct 6041 is fixedly connected to the outer wall of the outer shell 205, and is respectively connected to the third air duct 6041. The third air duct 6041 is fixedly connected to the outer wall of the outer shell 205. The inner wall of the third air duct 6041 is rotatably connected to the first impeller 605. The outer wall of the rotating shaft of the first impeller 605 is fixedly connected to the telescopic rod through the mounting plate. The telescopic end of the telescopic rod is fixedly connected to the rectangular frame 606. The rectangular frame 606 is slidably connected to the outer wall of the horizontal axis 208, and the gathering shaft 209 is slidably connected to the inner wall of the rectangular frame 606. When the rectangular frame 606 moves, the gathering shaft 209 inside it can slide along the corresponding guide groove on the horizontal axis 208.

[0028] like Figure 12 As shown, a guide block 701 is also included. A cylindrical groove adapted to the horizontal axis 208 is opened at one end of the rotating shaft of the first impeller 605. The guide block 701 is fixedly connected to the inner wall of the cylindrical groove. A sliding groove is opened on the outer wall of one end of the horizontal axis 208. The guide block 701 is stuck in the sliding groove and slides therein. The guide block 701 can make the horizontal axis 208 move horizontally back and forth by squeezing the sliding groove of the horizontal axis 208.

[0029] like Figure 11 As shown, it also includes a second impeller 801, the inner wall of the third air guide tube 6041 is rotatably connected to the second impeller 801, the rotating shaft of the second impeller 801 rotates through the third air guide tube 6041 and is fixedly connected to the first conical wheel 802, the inner wall of the outer shell 205 is symmetrically fixed with a mounting bracket 803, the inner wall of the mounting bracket 803 is rotatably connected to the second conical wheel 804, the second conical wheel 804 is fitted with the first conical wheel 802, and a rotating roller 805 is rotatably connected to the mounting bracket 803, the rotating roller 805 is fixedly connected to the second conical wheel 804 in a penetrating manner, and the outer wall of the rotating roller 805 is fixedly connected to a number of evenly distributed protruding shafts. When the rotating roller 805 rotates, the grass on both sides of the bottom of the outer shell 205 can be moved to the middle of the outer shell 205 through the several protruding shafts thereon.

[0030] Initially, both rollers at the bottom of the U-shaped frame 304 are in contact with the lawn soil. Before starting to mow the lawn, the staff first rotates the handwheel on the screw rod 302. The handwheel drives the screw rod 302 to rotate, and the screw rod 302 drives the piston plate 303 to slide forward in the second branch pipe 301. When the piston plate 303 slides, a part of the liquid in the pump body 201 is pumped into the second branch pipe 301. Since the two rollers at the bottom of the U-shaped frame 304 are in contact with the lawn soil at this time, the U-shaped frame 304 can drive the two first piston rods 203 to maintain a stable height. The liquid between the piston end of the second piston rod 204 and the bottom inner wall of the pump body 201 decreases, and the second piston rod 204 descends under the influence of its own weight and the weight of the outer shell 205. The outer shell 205 drives the two guide shafts 309 to descend. The two guide shafts 309 slide downward along the U-shaped frame 304 and the corresponding guide plates 308. At the same time, the outer shell 205 drives the two connecting plates 206 to descend through the two cross plates. The connecting plates 206 drive the four first cutting blades 207 on them to descend, shortening the distance between the first cutting blades 207 and the lawn, thereby enabling the control of the cutting length of the lawn.

[0031] When the lawn mower 1 moves, the lawn mower 1 drives the pump body 201 to move through the fixing frame 2011. The pump body 201 drives the first piston rod 203 and the second piston rod 204 to move, and drives the housing 205 and the C-shaped frame 304 to move through two guide plates 308 and two guide shafts 309. The housing 205 drives two connecting plates 206 to move through two cross plates. The two connecting plates 206 respectively drive the corresponding four first cutting blades 207 to move. The two rollers at the bottom of the C-shaped frame 304 always contact the lawn soil. Due to the uneven surface of the lawn soil, when the two rollers contact the lawn surface, they will drive the C-shaped frame 304 to slightly rise and fall. The C-shaped frame 304 drives the two first piston rods 203 to slightly rise and fall. When the C-shaped frame 304 descends, the C-shaped frame 304 drives the two first piston rods 203 to descend. The two first piston rods 203 respectively squeeze the liquid in the adjacent first branch pipes 202. The liquid in the two first branch pipes 202 is squeezed into the pump body 201, increasing the liquid between the inner wall bottom surface of the pump body 2 with the piston end of the second piston rod 204. The second piston rod 204 is driven by the liquid to drive the housing 205 to lift upward, and then the two connecting plates 206 and the two cross shafts 208 are lifted upward. The connecting plate 206 drives the four first cutting blades 207 thereon to lift upward. After the first cutting blade 207 lifts upward, the distance between it and the lawn increases. At this time, the length of the lawn trimmed by the first cutting blade 207 is shortened. When the C-shaped frame 304 lifts upward, the C-shaped frame 304 drives the two first piston rods 203 to lift upward. The two first piston rods 203 respectively pump the liquid in the pump body 201 into the corresponding first branch pipes 202, reducing the liquid between the inner wall bottom surface of the pump body 201 and the piston end of the second piston rod 204. The second piston rod 204 descends under the influence of its own weight and the weight of the housing 205, and then the two connecting plates 206 and the two cross shafts 208 descend. The connecting plate 206 drives the four first cutting blades 207 thereon to descend. After the first cutting blade 207 descends, the distance between it and the lawn is shortened. At this time, the length of the lawn trimmed by the first cutting blade 207 increases. Thus, it can adaptively adjust the height of the first cutting blade 207 according to the undulation amplitude of the lawn, making the height of the trimmed lawn more uniform and improving the aesthetic degree of the airport lawn.

[0032] Initially, there is a gap between the bottom end of the pawl 307 and the several ratchet teeth in the rectangular box 306. During the slight ups and downs of the shaped frame 304, the shaped frame 304 drives the pawl 307 to rise and fall through the rectangular block 305. It is worth noting that the shaped frame 304 only rises and falls slightly, thereby causing the pawl 307 to rise and fall slightly. The pawl 307 is affected by inertia and rotates slightly upward with the connection point of the rectangular block 305 as the center of the circle. When the pawl 307 rotates, it will not be in contact with the rectangular box 306. When the lawn is washed by heavy rain, the lawn soil may collapse locally, resulting in small pits in the lawn soil. When the two rollers at the bottom of the yoke 304 pass through the small pits, the rollers will suddenly lose the support of the lawn, causing the yoke 304 to fall down quickly, and the falling distance is large. The yoke 304 drives the pawl 307 to fall down quickly through the rectangular block 305, and drives the two first piston rods 203 to fall down quickly. The pawl 307 is affected by inertia. The effect is to rotate upward relative to the rectangular block 305. After the pawl 307 rotates, it contacts a number of ratchets in the rectangular box 306. The ratchets limit the rectangular block 305 through the pawl 307. The rectangular block 305 limits the shaped frame 304, so that the shaped frame 304 cannot continue to drive the two first piston rods 203 to fall downward, thereby preventing the first cutting knife 207 from being lifted up too high, resulting in the length of the lawn being cut by the first cutting knife 207. The two rollers at the bottom of the frame 304 come into contact with the lawn surface again, and the two rollers drive the frame 304 to lift up, so that the frame 304 drives the two second piston rods 204 to lift up, and then the first cutting knife 207 drops down, and the frame 304 drives the rectangular block 305 to lift and reset, and the rectangular block 305 drives the pawl 307 to lift and reset, and after the pawl 307 is lifted, it no longer contacts the several ratchets in the rectangular box 306.

[0033] Initially, the second elastic member is in a contracted state, and the bottom ends of the four adjacent I-shaped shafts 4031 are all stuck in the first annular track of the corresponding connecting plate 206. When the height of the first cutting knife 207 is adjusted, the housing 205 drives the two drive motors 401 thereon to rise and fall synchronously, and the second cutting knife 405 and the adjacent third cutting knife 406 rise and fall synchronously with the corresponding first cutting knife 207. After the adjustment is completed, the staff adjusts the position of the lifting plate 4032 according to the mowing position of the airport lawn. When it is necessary to mow the edge of the airport lawn, the staff rotates the screw, and the screw drives the corresponding lifting plate 4032 to rise. After the lifting plate 4032 is lifted, the four second elastic members adjacent to the lifting plate 4032 are released, so that the corresponding I-shaped shaft 403 1 is lifted upward. After the I-shaped shaft 4031 is lifted upward, the bottom end of the I-shaped shaft 4031 is separated from the first circular track of the corresponding connecting plate 206, and the two driving motors 401 are started. The output shaft of the driving motor 401 drives the corresponding cross plate 402 and the negative pressure fan blade 602 to rotate at high speed. The four first sliding grooves of the cross plate 402 respectively squeeze the outer wall of the first sliding shaft 403 therein. The first sliding shaft 403 near the edge of the lawn is affected by the centrifugal force and drives the corresponding I-shaped shaft 4031 to slide along the inner wall of the corresponding guide track 404. The four first sliding shafts 403 away from the edge of the lawn are driven by the force to drive the corresponding I-shaped shaft 4031 to slide along the first circular track of the corresponding connecting plate 206. When the first sliding shaft 403 near the edge of the lawn slides along the guide track When the inner wall of the guide rail 404 with the same radius slides, the adjacent first cutting knife 207, the second cutting knife 405 and the third cutting knife 406 are all in a horizontal state. When the first sliding shaft 403 slides to the V-shaped inner wall of the guide rail 404, the first sliding shaft 403 gradually slides to the side away from the center of the connecting plate 206, the first elastic member is gradually released, and the first sliding shaft 403 drives the corresponding I-shaped shaft 4031 and the connecting rod 408 to move to the side away from the center of the connecting plate 206, and the connecting rod 408 drives the wedge block 504 thereon to move. After the wedge block 504 moves, it is squeezed by the outer wall of the corresponding short shaft 503. The wedge block 504 is forced to drive the connecting rod 408 to rotate downward with the connection point of the connecting rod 408 and the first sliding shaft 403 as the center. The connecting frame 407 drives the third cutting knife 406 to squeeze the inner wall of the second sliding groove of the second cutting knife 405, and the second cutting knife 405 is forced to rotate downward with the connection point of the first cutting knife 207 as the center. At the same time, the third cutting knife 406 slides in the second sliding groove to the side away from the first cutting knife 207, thereby preventing the cutting radius of the second cutting knife 405 and the third cutting knife 406 from decreasing after the second cutting knife 405 and the third cutting knife 406 rotate, resulting in a reduction in the cutting area of ​​the lawn. Subsequently, when the first sliding shaft 403 is squeezed by the inner wall of the guide rail 404, the first sliding shaft 403 gradually slides to the side close to the center of the connecting plate 206, the first elastic member gradually contracts and resets, and the first sliding shaft 403 drives the corresponding I-shaped shaft 4031 and the connecting rod 408 to move and reset.The connecting rod 408 drives the wedge block 504 to move and reset. After the wedge block 504 is reset, it is no longer squeezed by the outer wall of the corresponding short shaft 503. Under the action of centrifugal force, the second cutting knife 405 rotates to a horizontal state with the connection point of the first cutting knife 207 as the center. The second sliding groove inside it squeezes the outer wall of the third cutting knife 406, making the third cutting knife 406 form a horizontal state. Under the action of centrifugal force, the connecting rod 408 rotates to a horizontal state with the connection point of the corresponding first sliding shaft 403 as the center. This completes the rotation and reset of the second cutting knife 405 and the third cutting knife 406. Then the above steps are repeated to achieve the same effect. The second cutting knife 405 and the third cutting knife 406 away from the edge of the lawn always remain in a horizontal state.

[0034] When the two negative pressure fan blades 602 rotate at high speed, negative pressure is generated in the corresponding air guide plates 601, and the air in the two air guide plates 601 is discharged upward through the two corresponding air vents on the shell 205. At this time, the air guide plate 601 on the left generates negative pressure in the third air guide pipe 6041 on the left through the first air guide pipe 603, and the air guide plate 601 on the right generates negative pressure in the third air guide pipe 6041 on the right through the second air guide pipe 604. Both third air guide pipes 6041 extract air from the outside, and the first blades in the two third air guide pipes 6041 The first impeller 605 and the second impeller 801 are respectively rotated at high speed by the impact of the air. The first impeller 605 on the left and the second impeller 801 on the right are rotated clockwise by the impact of the air, and the first impeller 605 on the right and the second impeller 801 on the left are rotated counterclockwise by the impact of the air. The two first impellers 605 respectively drive the telescopic rod to rotate through the mounting plates thereon, and the telescopic rod drives the corresponding rectangular frame 606 to slide around the outer wall of the corresponding horizontal axis 208 at high speed. The sliding directions of the two rectangular frames 606 are opposite, and they squeeze the outer wall of the gathering shaft 209 inside. The two adjacent rectangular frames 606 are rotated counterclockwise by the impact of the air. The gathering shaft 209 slides along the corresponding guide groove on the horizontal shaft 208. The two adjacent gathering shafts 209 repeatedly move away from or approach each other under the action of the guide groove. When the gathering shaft 209 slides to the bottom of the corresponding guide groove, a large gap is generated between the two adjacent gathering shafts 209. As the gathering shaft 209 continues to slide, the two adjacent gathering shafts 209 gradually move closer under the action of the guide groove. The grass between the two gathering shafts 209 is gathered by the two gathering shafts 209 and is pushed upward by the two adjacent gathering shafts 209, so that the crooked grass can stand upright. The blades 206 are vertically arranged to prevent the grass from tilting and coming into contact with the first cutting knife 207, the second cutting knife 405 and the third cutting knife 406, and the two first impellers 605 squeeze the inner walls of the slide grooves of the adjacent horizontal shafts 208 through the guide blocks 701 therein respectively. The slide grooves of the two horizontal shafts 208 are subjected to force to cause the two horizontal shafts 208 to continuously reciprocate horizontally. Several groups of guide grooves on the two horizontal shafts 208 respectively drive the gathering shafts 209 therein to move horizontally back and forth, and the rectangular frame 606 moves horizontally back and forth with the corresponding horizontal shafts 208, thereby further increasing the contact area between the gathering shafts 209 and the grass.

[0035] At the same time, the two second impellers 801 respectively drive the corresponding first conical wheels 802 to rotate at high speed. The rotation directions of the two first conical wheels 802 are opposite. The first conical wheel 802 rubs against the second conical wheel 804, so that the second conical wheel 804 drives the corresponding rotating roller 805 to rotate at high speed. When the rotating roller 805 rotates, the grass on the two edges of the bottom of the shell 205 can be pushed toward the middle of the shell 205 through several protruding shafts thereon. At this time, the inclined second cutting knife 405 and the third cutting knife 406 can further cut the grass on the edge. Since the grass on the edge is in a skewed state, the second cutting knife 405 and the third cutting knife 406 are also in a tilted state, thereby enabling the second cutting knife 405 and the third cutting knife 406 to cut the skewed grass normally, and the grass on the edge will not be inconsistent in height with other grass after being cut.

[0036] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A disc mower cutter for airports, comprising a housing (205), characterized in that: The invention also comprises a connecting plate (206), the inner wall of the outer shell (205) is symmetrically fixed with a transverse plate, the top of the transverse plate is fixed with the connecting plate (206), the outer wall of the connecting plate (206) is provided with an annular sliding groove, a plurality of evenly distributed first cutting knives (207) are slidably connected in the annular sliding groove, the bottoms of the plurality of first cutting knives (207) are hinged with the second cutting knives (405), a second sliding groove is provided on one side of the second cutting knife (405), a third cutting knife (406) is slidably connected in the second sliding groove, a connecting frame (407) is fixedly connected to one side of the third cutting knife (406), and a connecting rod (408) is hingedly connected to the top of the connecting frame (407).

2. The airport-specific disc mower cutter according to claim 1, characterized in that: The drive motor (401) is also included. The drive motor (401) is symmetrically mounted on the top of the housing (205). The output shaft of the drive motor (401) rotatably penetrates the housing (205) and is rotatably fixedly connected to the top of the connecting plate (206). A cross plate (402) is fixedly sleeved on the outer wall of the output shaft of the drive motor (401). A plurality of evenly distributed first sliding grooves are penetrated through the top of the cross plate (402). First sliding shafts (403) are slidably connected in the plurality of first sliding grooves. A first elastic member is disposed between the first sliding shaft (403) and the inner wall of the first sliding groove. The top of the first sliding shaft (403) is penetrated and slidably connected to the first sliding shaft (403). An I-shaped shaft (4031) is connected, a second elastic member is arranged between the top of the I-shaped shaft (4031) and the first sliding shaft (403), a first annular track is opened at the top of the connecting plate (206), the bottom end of the I-shaped shaft (4031) is inserted into the first annular track and slides therein, a lifting plate (4032) is movably sleeved on the outer wall of the output shaft of the driving motor (401), a lead screw is rotatably connected to the top of the lifting plate (4032), and the lead screw is threadedly connected to the housing (205) in a penetrating manner, a guide track (404) is fixedly connected to the top of the connecting plate (206), and the outer wall of the first sliding shaft (403) contacts the inner wall of the guide track (404).

3. The airport-specific disc mower cutter according to claim 2, characterized in that: The invention also comprises a guide frame (501), wherein the outer wall of the first sliding shaft (403) is fixedly sleeved with the guide frame (501), and the inner wall of the guide frame (501) is slidably connected with the second sliding shaft (502), and the top of the connecting plate (206) is provided with a second annular track, and the bottom end of the second sliding shaft (502) is inserted into the second annular track and slides therein, and the top end of the second sliding shaft (502) is fixedly connected with a short shaft (503), and the top of the connecting rod (408) is fixedly connected with a wedge block (504) used in conjunction with the short shaft (503), and one end of the connecting rod (408) is rotatably connected to the outer wall of the first sliding shaft (403).

4. The airport-specific disc mower according to claim 3, characterized in that: It includes a lawn mower (1), and an adaptive mechanism is provided on the lawn mower (1). The adaptive mechanism includes a pump body (201). A fixing frame (2011) is fixedly connected to the front side of the lawn mower (1). The pump body (201) is fixedly connected to the front side of the fixing frame (2011). First branch pipes (202) are symmetrically communicated with both sides of the pump body (201). A first piston rod (203) is slidably connected to the inner wall of the first branch pipe (202). The tops of the two first piston rods (203) are jointly fixedly connected to a U-shaped frame (304). Rolling wheels are symmetrically rotatably connected to the bottom end of the U-shaped frame (304). A second piston rod (204) is slidably connected to the inner wall of the pump body (201). The bottom end of the second piston rod (204) is fixedly connected to a housing (205). Guide plates (308) are symmetrically fixedly connected to the bottom of the fixing frame (2011). Guide shafts (309) are symmetrically fixedly connected to the top of the housing (205). The guide shafts (309) are slidably connected to the guide plates (308) and the U-shaped frame (304) in a penetrating manner.

5. The airport-specific disc mower according to claim 4, characterized in that: The adaptive mechanism further includes a second branch pipe (301). The second branch pipe (301) is communicated with the front side of the pump body (201). One end of the second branch pipe (301) is threadedly connected to a screw rod (302). One end of the screw rod (302) is rotatably connected to a piston plate (303). The piston plate (303) is slidably connected to the inner wall of the second branch pipe (301).

6. The airport-specific disc mower according to claim 5, characterized in that: It further includes a fall prevention mechanism. The fall prevention mechanism includes a rectangular block (305). The rectangular block (305) is fixedly connected to the outer wall of the U-shaped frame (304). A rectangular box (306) is fixedly connected to the top end of the pump body (201). The rectangular block (305) is slidably connected to the inner wall of the rectangular box (306). A ratchet pawl (307) is hinged to the bottom of the rectangular block (305). A number of uniformly distributed ratchet teeth are fixedly connected to the inner wall of the rectangular box (306). The ratchet pawl (307) is used in cooperation with the number of ratchet teeth.

7. The airport-specific disc mower according to claim 6, characterized in that: It further includes a gathering mechanism. The gathering mechanism includes a cross shaft (208). Two cross shafts (208) are symmetrically and movably connected to the inner wall of the housing (205) in a penetrating manner. A number of groups of uniformly distributed guide grooves are formed on the outer wall of the cross shaft (208). Gathering shafts (209) are slidably connected to each of the number of groups of guide grooves.

8. The airport-specific disc mower according to claim 7, characterized in that: The gathering mechanism further comprises an air guide plate (601), the air guide plate (601) is symmetrically fixedly connected to the inner wall of the housing (205), the output shaft of the drive motor (401) is through-connected and rotatably connected to the air guide plate (601), a negative pressure fan blade (602) is fixedly sleeved on the output shaft of the drive motor (401), and two groups of air holes are symmetrically opened on the top of the housing (205), the bottom of one of the air guide plates (601) is connected to a first air guide pipe (603), and the bottom of the other air guide plate (601) is connected to a second air guide pipe (604), one end of the first air guide pipe (603) is connected to the One end of each of the second air guide tubes (604) is fixedly connected to the outer shell (205) in a through-type manner, and is respectively connected to a third air guide tube (6041); the third air guide tube (6041) is fixedly connected to the outer wall of the outer shell (205); the inner wall of the third air guide tube (6041) is rotatably connected to the first impeller (605); the outer wall of the rotating shaft of the first impeller (605) is fixedly connected to a telescopic rod via a mounting plate; the telescopic end of the telescopic rod is fixedly connected to a rectangular frame (606); the rectangular frame (606) is slidably connected to the outer wall of the horizontal axis (208); and the gathering axis (209) is slidably connected to the inner wall of the rectangular frame (606).

9. The airport-specific disc mower according to claim 8, characterized in that: It also includes a guide block (701), wherein a cylindrical groove is provided at one end of the rotating shaft of the first impeller (605), the guide block (701) is fixedly connected to the inner wall of the cylindrical groove, and a sliding groove is provided on the outer wall of one end of the transverse axis (208), and the guide block (701) is inserted into the sliding groove and slides therein.

10. The airport-specific disc mower according to claim 9, characterized in that: The invention also comprises a second impeller (801), the inner wall of the third air guide tube (6041) is rotatably connected to the second impeller (801), the rotation axis of the second impeller (801) rotatably passes through the third air guide tube (6041) and is fixedly connected to the first conical wheel (802), the inner wall of the outer shell (205) is symmetrically fixedly connected to a mounting frame (803), the inner wall of the mounting frame (803) is rotatably connected to the second conical wheel (804), the second conical wheel (804) is fitted with the first conical wheel (802), a rotating roller (805) is rotatably connected to the mounting frame (803), the rotating roller (805) is rotatably connected to the second conical wheel (804), and the outer wall of the rotating roller (805) is fixedly connected to a plurality of evenly distributed protruding shafts.

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