Tibetan white bark pine seedling root cutting machine

Abstract

The invention discloses a Tibetan white bark pine seedling root cutting machine which comprises a first flat plate and a second flat plate which are arranged in parallel at an interval; the two lower ends of the first n-shaped box body are connected to the first flat plate and the second flat plate respectively; the rope saw driving mechanism is arranged in the first n-shaped box body, the rope saw driving mechanism is provided with two output ends, and the two output ends of the rope saw driving mechanism do reciprocating motion in the direction transversely penetrating through the first flat plate and the second flat plate; the two ends of the rope saw assembly are connected to the two output ends of the rope saw driving mechanism respectively; wherein a reversing wheel set is further arranged in the first n-shaped box body, the rope saw assembly bypasses the reversing wheel set, a pair of through holes are formed in the opposite side walls of the vertical part of the first n-shaped box body, and the rope saw assembly penetrates through the pair of through holes and is spanned between the opposite side walls of the vertical part of the first n-shaped box body. Through cooperation of the rope saw driving mechanism and the rope saw assembly, in-situ rapid and continuous root cutting of the Tibetan white bark pine is achieved, notches are smooth, and the root cutting depth is accurate.

Description

Technical Field

[0001] The present invention relates to the field of root cutting machines. More specifically, the present invention relates to a root cutting machine for cultivating Tibetan white pines for seedlings. Background Art

[0002] The dry bark of the Tibetan white pine is mottled and beautiful, the needles are short, thick and bright, it has a wide range of adaptability and can grow well in calcareous soil and slightly saline-alkali land. It is a relatively good traditional tree species for landscaping. Since the Tibetan white pine is a deep-rooted tree species, it is necessary to cut the roots during the cultivation process to achieve the purpose of growing more lateral roots. However, there is no special root cutting machine for the early seedling cultivation process on the market. The existing root cutting methods usually use manual cutting of the roots of single plants manually. The labor cost is high, and it is easy to damage the root development, and it is also time-consuming and laborious. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and provide at least the advantages described later.

[0004] To achieve these objects and other advantages in accordance with the present invention, there is provided a root cutting machine for cultivating Tibetan white pines for seedlings, including: A first flat plate and a second flat plate, the first flat plate and the second flat plate are arranged side by side at intervals, so that the ridge planted with Tibetan white pines is located between the first flat plate and the second flat plate; A first n-shaped box body, the two lower ends of the first n-shaped box body are respectively connected to the first flat plate and the second flat plate; A wire saw driving mechanism, the wire saw driving mechanism is arranged inside the first n-shaped box body, the wire saw driving mechanism is provided with two output ends, and the two output ends of the wire saw driving mechanism reciprocate in the direction across the first flat plate and the second flat plate; A wire saw assembly, the two ends of the wire saw assembly are respectively connected to the two output ends of the wire saw driving mechanism; Wherein, a reversing wheel group is further arranged inside the first n-shaped box body, the wire saw assembly bypasses the reversing wheel group, a pair of through holes are opened on the opposite side walls of the vertical part of the first n-shaped box body, and the wire saw assembly passes through the pair of through holes and spans between the opposite side walls of the vertical part of the first n-shaped box body; Rollers rolling along the extending direction of the ridge are arranged on the lower surfaces of the first flat plate and the second flat plate.

[0005] Since the existing root cutting methods usually use a root cutting shovel at the root for manual root cutting, which is time-consuming and laborious. In the present invention, the first flat plate and the second flat plate are arranged at intervals, so that the machine can stably straddle both sides of the ridge. The roller design enables the machine to move smoothly along the extension direction of the ridge. A wire saw driving mechanism is arranged in the first n-shaped box to drive the wire saw assembly to reciprocate horizontally, and a reversing pulley group is used to adjust the tension of the wire saw to ensure that the cutting trajectory is straight and continuous. This structure takes into account the mobility of the equipment and the stability of cutting, and the root cutting depth is accurate.

[0006] Preferably, the wire saw driving mechanism includes: A left driving rod and a right driving rod, the left driving rod and the right driving rod are horizontally and coaxially arranged in the first n-shaped box in a direction transverse to the first flat plate and the second flat plate, and the left driving rod and the right driving rod are arranged at intervals; A driving frame, the driving frame is arranged between the left driving rod and the right driving rod, and both the left driving rod and the right driving rod are connected to the driving frame; A triangular cam, which is arranged in the driving frame; A first motor, which is arranged in the first n-shaped box, and the output shaft of the first motor is connected to the triangular cam to drive the triangular cam to rotate and then drive the driving frame to reciprocate.

[0007] In the present invention, the left and right driving rods and the driving frame are linked by a triangular cam. The rotation of the motor driving the cam is converted into the horizontal movement of the driving frame, with high transmission efficiency and strong synchronism. This structure simplifies the driving device, ensures the synchronous movement of both ends of the wire saw, the cutting frequency is stable, and the flatness of the cut is significantly improved.

[0008] Preferably, the wire saw assembly includes a first chain, a wire saw, and a second chain connected in sequence. The first chain is connected to the left driving rod, and the second chain is connected to the right driving rod; The reversing pulley group includes: A pair of first sprockets, which are respectively arranged outside the left driving rod and the right driving rod. The first chain bypasses from the upper part of the first sprocket outside the left driving rod, and the second chain bypasses from the upper part of the first sprocket outside the right driving rod; A pair of second sprockets, which are respectively arranged below the left driving rod and the right driving rod. The first chain also bypasses from the lower part of the second sprocket below the left driving rod, and the second chain also bypasses from the lower part of the second sprocket below the right driving rod; The wire saw passes through the pair of through holes and lies across between the opposite side walls of the vertical part of the first n-shaped box.

[0009] In the present invention, the first sprocket (upper part) and the second sprocket (lower part) form a reversing sprocket set to constrain the movement trajectory of the chain and balance the tension. The chain bypasses the sprockets, and the movement path is stable, avoiding the front-back slippage of the wire saw and ensuring that the cutting section remains horizontally stable.

[0010] Preferably, the second sprocket is rotatably connected to its axle; Arc-shaped long circular holes are formed in the side walls of the first n-shaped box body opposite to the end faces of the axles. Both ends of the axle pass through the long circular holes and are fixed at selectable positions in the long circular holes to adjust the height of the second sprocket.

[0011] In the present invention, the height of the axle of the second sprocket is adjusted through the arc-shaped long circular hole. The operator can quickly adjust the position of the second sprocket according to the root depth to adapt to different root distribution depths.

[0012] Preferably, scales are provided on the side walls of the first n-shaped box body along the edges of the long circular holes. The part of the axle extending outside the long circular hole is provided with threads. The part of the axle extending outside the long circular hole is also provided with a clamping plate and a nut. The nut abuts against the clamping plate to clamp the side wall of the first n-shaped box body, thereby fixing the axle.

[0013] In the present invention, the threaded end of the axle is fixed in cooperation with the clamping plate and the nut, and the scale line provides a quantitative reference. This design ensures that the position of the axle is firm after adjustment, prevents loosening during operation, simplifies the adjustment process, and reduces the operation difficulty.

[0014] Preferably, the Tibetan white pine seedling root-cutting machine further includes: A second n-shaped box body, which is arranged behind the first n-shaped box body, and the two lower ends of the second n-shaped box body are also respectively connected to the first flat plate and the second flat plate; A second motor, which is arranged on the outer top of the second n-shaped box body, and its output shaft passes through the top of the n-shaped box body and extends into the second n-shaped box body A speed reducer, which is arranged in the second n-shaped box body. The output shaft of the second motor is connected to the input end of the speed reducer. The speed reducer is provided with two output shafts extending above the first flat plate and the second flat plate respectively; Two transmission components, which respectively correspond to the two output shafts of the speed reducer. One transmission component also corresponds to the roller on the first flat plate, and the other transmission component also corresponds to the roller on the second flat plate. The rollers driven by the transmission components on the first flat plate and the second flat plate are symmetrically arranged.

[0015] In the present invention, through the design of the second motor, the reducer and the symmetric drive assembly, the automatic drive of the rollers is realized, reducing the manual burden; the symmetric drive ensures the stable advancement of the machine, improves the consistency of the root cutting depth, adapts to different ridge terrains, and improves the operation efficiency.

[0016] Preferably, the drive assembly includes: A transmission rod, which is vertically arranged in the second n-shaped box body. A first bevel gear is arranged on the output shaft of the reducer, and a second bevel gear meshing with the first bevel gear is arranged at the upper end of the transmission rod; Wherein, the lower end of the transmission rod passes through the lower end of the second n-shaped box body and the first flat plate and / or the second flat plate, and then is coaxially connected with a third bevel gear. The wheel axle of the roller below the first flat plate and / or the second flat plate extends out of the outer shell of the roller and is then connected with a fourth bevel gear. The third bevel gear meshes with the fourth bevel gear to transmit the power of the output shaft of the reducer to the roller.

[0017] In the present invention, the meshing transmission of bevel gears is adopted to realize the efficient conversion of vertical power to the horizontal direction, with a compact structure and stable transmission; reduce power loss, ensure sufficient driving force of the rollers, and enhance the terrain adaptability.

[0018] Preferably, the second motor is a variable-frequency motor, having at least three frequency conversion gears of low speed, medium speed, and high speed. The second motor adopts a variable-frequency motor and is provided with three-speed adjustment functions of low speed, medium speed, and high speed, and can flexibly adjust the moving speed of the rollers according to the soil conditions of the ridges.

[0019] Preferably, the roller is a steel wheel, and anti-slip teeth are arranged on the surface of the roller. By designing the roller as a steel wheel and arranging anti-slip teeth on the surface, the wear resistance and compressive capacity of the roller are significantly enhanced, which is suitable for the ridge terrain. The anti-slip tooth structure greatly improves the friction between the roller and the ground, prevents the machine from slipping in wet or soft soil, and ensures the traveling stability and direction controllability of the root cutter. At the same time, the rigid support of the steel wheel can bear the overall weight of the machine and the impact load during operation, extend the service life of the roller, reduce the maintenance frequency, and thus improve the continuity and reliability of the root cutting operation.

[0020] Preferably, it further includes an n-shaped handrail, and the two lower ends of the n-shaped handrail are respectively connected to the ends of the same end of the first flat plate and the second flat plate. The horizontal cross beam of the n-shaped handrail provides a stable holding point and conforms to the ergonomic design. The operator pushes the machine forward upright, reducing the waist load.

[0021] Other advantages, objectives and features of the present invention will be partially reflected by the following description, and partially will also be understood by those skilled in the art through the research and practice of the present invention. Description of the Drawings

[0022] Figure 1 Schematic structural diagram of the root-cutting machine for cultivating Picea wilsonii Mast. seedlings of the present invention; Figure 2 Front structural diagram inside the first N-shaped box body of the present invention; Figure 3 Side structural diagram inside the first N-shaped box body of the present invention; Figure 4 Front structural diagram inside the second N-shaped box body of the present invention. Specific implementation manners

[0023] The following further describes the present invention in detail with reference to the accompanying drawings, so that those skilled in the art can implement it according to the description in the specification.

[0024] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0025] As Figures 1 to 4 shown, the present invention provides a root-cutting machine for cultivating Picea wilsonii Mast. seedlings, including: A first flat plate 1 and a second flat plate 2, the first flat plate 1 and the second flat plate 2 are arranged in parallel at intervals, so that the ridge planted with Picea wilsonii Mast. is located between the first flat plate 1 and the second flat plate 2; A first N-shaped box body 3, the two lower ends of the first N-shaped box body 3 are respectively connected to the first flat plate 1 and the second flat plate 2; A wire saw driving mechanism 4, the wire saw driving mechanism 4 is arranged inside the first N-shaped box body 3, the wire saw driving mechanism 4 is provided with two output ends, and the two output ends of the wire saw driving mechanism 4 reciprocate in the direction across the first flat plate 1 and the second flat plate 2; A wire saw assembly 5, the two ends of the wire saw assembly 5 are respectively connected to the two output ends of the wire saw driving mechanism 4; Wherein, a reversing pulley group 6 is further arranged inside the first N-shaped box body 3, the wire saw assembly 5 bypasses the reversing pulley group 6, a pair of through holes are opened on the opposite side walls of the vertical part of the first N-shaped box body 3, and the wire saw assembly 5 passes through the pair of through holes and spans between the opposite side walls of the vertical part of the first N-shaped box body 3; Rolling wheels 7 are arranged on the lower surfaces of the first flat plate 1 and the second flat plate 2 and roll along the extending direction of the ridge.

[0026] Specifically, the spacing distance between the first flat plate 1 and the second flat plate 2 can be set to 30 - 50 cm, and the specific value is adjusted according to the width of the ridge. The flat plates are made of aluminum alloy or carbon steel, with a thickness of 5 - 8 mm, and the surface can be sprayed with an anti-rust coating. The rollers 7 on the lower surface of the flat plates can be rubber wheels or nylon wheels, with a diameter of 15 - 20 cm. At least one row of rollers 7 is installed under each flat plate, and 2 - 4 rollers 7 are arranged in each row, arranged along the extension direction of the ridge. The rollers 7 are fixed to the front and rear ends of the lower surface of the flat plates by bolts.

[0027] The height of the vertical part of the first n-shaped box body 3 can be set to 40 - 60 cm, the length of the horizontal part can be set to 80 - 100 cm, and it is formed by welding steel plates. The wall thickness of the box body can be set to 3 - 5 mm. A wire saw driving mechanism 4 and a reversing wheel set 6 are installed inside the box body.

[0028] The wire saw assembly 5 can adopt a high-strength wire saw with a diameter not greater than 4 mm, and the surface is galvanized. Both ends of the wire saw assembly 5 are respectively fixed to the two output ends of the wire saw driving mechanism 4. The wire saw assembly 5 bypasses the reversing wheel set 6 and passes through the through hole on the side wall of the first n-shaped box body 3 to form a horizontal cutting section.

[0029] The working process of the above technical solution is as follows: When the machine starts, the wire saw driving mechanism 4 pushes the two output ends to make a horizontal reciprocating motion, driving the wire saw assembly 5 to move horizontally synchronously. The wire saw assembly 5 passes through the through hole on the side wall of the first n-shaped box body 3 to form a horizontal cutting section. The operator pushes the machine to make the rollers 7 roll along the ridge, driving the whole machine to move forward, and the wire saw assembly 5 cuts the roots of the Tibetan white pine horizontally at a certain frequency. The above technical solution realizes the in-situ rapid and continuous root cutting of the Tibetan white pine through the cooperation of the wire saw driving mechanism 4 and the wire saw assembly 5, and the incision is flat and the root cutting depth is accurate.

[0030] In another technical solution, the wire saw driving mechanism 4 includes: A left driving rod 401 and a right driving rod 402, which are horizontally coaxially arranged in the first n-shaped box body 3 along the direction across the first flat plate 1 and the second flat plate 2, and the left driving rod 401 and the right driving rod 402 are spaced apart; A driving frame 403, which is arranged between the left driving rod 401 and the right driving rod 402, and both the left driving rod 401 and the right driving rod 402 are connected to the driving frame 403; A triangular cam 404, which is arranged inside the driving frame 403; A first motor 405, which is arranged inside the first n-shaped box body 3. The output shaft of the first motor 405 is connected to the triangular cam 404 to drive the triangular cam 404 to rotate and then drive the driving frame 403 to reciprocate.

[0031] Specifically, the first motor 405 can be a servo motor 405 (such as JSD-EL2), which is directly connected to the shaft of the triangular cam 404 through a coupling. The triangular cam 404 is a Reuleaux triangle cam. The first motor 405 is fixed on the mounting seat on the inner side wall of the first n-shaped box body 3, and the mounting seat is connected to the box body by bolts. When the triangular cam 404 rotates, its contour pushes the driving frame 403 to slide horizontally. In addition, the first motor 405 can also be controlled by a PLC (such as Siemens S7-200) or a frequency converter (such as Mitsubishi FR-D700), and the reciprocating frequency is controlled by adjusting the rotation speed of the first motor 405.

[0032] The power supply of the first motor 405 can adopt a rechargeable mobile power supply, and the rechargeable mobile power supply can be fixedly installed inside or on the outer top of the first n-shaped box body.

[0033] The diameters of the left driving rod 401 and the right driving rod 402 can be set to 20-25 mm, and the material is 45# steel, with surface quenching treatment. The reciprocating rod is horizontally installed coaxially inside the first n-shaped box body 3, and the spacing can be set to 15-20 cm. Inside the first n-shaped box body 3, a left guiding cylinder 406 for limiting the left driving rod 401 and a right guiding cylinder 407 for limiting the right driving rod 402 can be provided. The left guiding cylinder 406 can be fixedly connected to the inner side wall of the first n-shaped box body 3 through a connecting rod, and the right guiding cylinder 407 can also be fixedly connected to the inner side wall of the first n-shaped box body 3 in the same way. A flat key or a spline can also be provided on the left driving rod, and a flat key groove matching the flat key or a spline groove matching the spline can be provided on the inner wall of the left guiding cylinder to prevent the left driving rod from rotating in the left guiding cylinder and affecting the driving frame. A similar design can also be made for the right driving rod and the right guiding cylinder.

[0034] The driving frame 403 can be welded by rectangular steel pipes, and a triangular cam 404 is installed inside the frame. Roller bearings can be provided at the edge of the cam to reduce friction. The driving frame 403 can be welded or connected to the left and right driving rods 402 through hinge pins, and the diameter of the pin shaft can be set to 8-10 mm.

[0035] The working process of the above technical solution is as follows: After the first motor 405 is started, the triangular cam 404 drives the driving frame 403 to move horizontally back and forth, driving the left and right driving rods 402 to move synchronously, so that the horizontal cutting section of the wire saw assembly 5 moves horizontally back and forth at a certain frequency. Usually, the first motor 405 can be set to perform the root cutting operation with the horizontal cutting section of the wire saw assembly 5 reciprocating 3000-5000 times per minute.

[0036] In the foregoing technical solution, if the wire saw assembly 5 directly uses a wire saw, when the whole machine moves forward to cut the roots of Pinus gerardiana in Tibet, the wire saw will also be subject to a resistance in the direction opposite to the forward movement direction. This resistance can easily cause the wire saw to slip off the reversing pulley group (usually using multiple fixed pulleys for reversing) around which it passes. Therefore, improvements have been made in the next technical solution.

[0037] In another technical solution, the wire saw assembly 5 includes a first chain 501, a wire saw 502, and a second chain 503 that are connected in sequence. The first chain 501 is connected to the left drive rod, and the second chain 503 is connected to the right drive rod; The reversing pulley group 6 includes: A pair of first sprockets 601, which are respectively arranged on the outer sides of the left drive rod 401 and the right drive rod 402. The first chain 501 bypasses from the upper part of the first sprocket on the outer side of the left drive rod, and the second chain 503 bypasses from the upper part of the first sprocket on the outer side of the right drive rod; A pair of second sprockets 602, which are respectively arranged below the left drive rod and the right drive rod. The first chain 501 also bypasses from the lower part of the second sprocket below the left drive rod, and the second chain 503 also bypasses from the lower part of the second sprocket below the right drive rod; The wire saw 502 passes through the pair of through holes and spans between the opposite side walls of the vertical part of the first n-shaped box body.

[0038] Specifically, the first sprocket 601 can be a stainless steel bearing sprocket with a diameter of 5 - 8 cm. The pointed teeth of the first sprocket are inserted into the first chain 501 and / or the first chain 501 to form a stable transmission structure, which restricts the movement trajectory of the chain and balances the tension, and can prevent the wire saw 502 from slipping back and forth. The axle of the first sprocket 601 can be fixed to the opposite inner side walls of the first n-shaped box body 3 by bolts. After the first chain 501 bypasses from the upper part of the first sprocket 601, it extends downward to the second sprocket 602. Similarly, after the second chain 503 bypasses from the upper part of the other first sprocket 601, it extends downward to the other second sprocket 602. After the first sprocket 601 and the second sprocket 602 are installed, the rotational resistance needs to be tested to ensure smooth sliding of the chain.

[0039] The second sprocket 602 can be a stainless steel bearing sprocket with a diameter of 4 - 6 cm. The second sprocket 602 can be installed below the reciprocating rod in the same way as the first sprocket 601, and the vertical distance is 10 - 15 cm.

[0040] However, if the position of the second sprocket 602 is fixed, it will cause the height of the wire saw 502 as the horizontal cutting section to be unable to be adjusted, and it cannot meet the root cutting requirements at different depths. Therefore, improvements have been made in the next technical solution.

[0041] In another technical solution, the second sprocket 602 is rotatably connected to its axle; Arc-shaped oblong holes are formed in the side walls of the first n-shaped box body 3 opposite to the end faces of the axles. Both ends of the axles pass through the oblong holes, and are fixed at selectable positions in the oblong holes to adjust the height of the second sprocket 602.

[0042] Furthermore, scales are provided along the edges of the oblong holes on the side walls of the first n-shaped box body 3. The part of the axle extending outside the oblong holes is provided with threads. The part of the axle extending outside the oblong holes is also provided with a clamping plate 8 and a nut 9. The nut 9 abuts against the clamping plate 8 to clamp the side wall of the first n-shaped box body 3, thereby fixing the axle.

[0043] Specifically, after both ends of the axle of the second sprocket 602 pass through the oblong holes, the exposed parts are processed with M10 threads and fixed in cooperation with the clamping plate 8 and the nut 9. During adjustment, after loosening the nut 9, the axle is slid up and down along the oblong hole. The scale accuracy can be set to 1 mm. For example, when the pulley is adjusted to the scale "10 cm", the cutting depth is 10 cm.

[0044] The working process of the above technical solution is as follows: When the motor 405 drives the driving frame 403 to move horizontally, the left and right driving rods 402 drive the wire saw assembly 5 to move synchronously. The first chain 501 and the second chain 503 respectively bypass from above a pair of first sprockets 601, and bypass downward around the second sprocket 602. The wire saw 502 is connected between the first chain 501 and the second chain 503 to form a horizontally cutting section with balanced tension. Adjusting the height of the second sprocket 602 can change the cutting height. For example, when the second sprocket is lowered by 3 cm, the cutting trajectory of the wire saw 502 is lowered by 3 cm. The nut 9 is tightened to 15 - 20 N·m by a torque wrench to ensure that the axle is firmly fixed. During testing, a simulated ridge can be used to verify that the sprockets have no deviation or jamming after continuous operation for 2 hours. In the above technical solution, the first sprocket 601 and the second sprocket 602 cooperate up and down to ensure that the tension of the wire saw 502 is uniform, avoid slipping or deviation during cutting. The design of the adjustable height of the second sprocket 602 can meet the requirements of different root depths and reduce accidental injury to the main roots of seedlings.

[0045] In another technical solution, the Tibetan white pine seedling root-cutting machine further includes: A second n-shaped box body 10, which is arranged behind the first n-shaped box body 10, and the two lower ends of the second n-shaped box body 10 are also respectively connected to the first flat plate and the second flat plate; A second motor 11, which is arranged on the outer top of the second n-shaped box body 10, and its output shaft passes through the top of the n-shaped box body and extends into the second n-shaped box body 10 Reducer 12 is disposed within the second N-shaped housing 10. The output shaft of the second motor 11 is connected to the input end of the reducer 12. The reducer 12 is provided with two output shafts that extend above the first flat plate and the second flat plate respectively. Two transmission components 13 respectively correspond to the two output shafts of the reducer 12. One of the transmission components 13 also corresponds to the rollers on the first flat plate, and the other transmission component 13 also corresponds to the rollers on the second flat plate. Moreover, the rollers driven by the transmission component 13 on the first flat plate and the rollers driven by the transmission component 13 on the second flat plate are symmetrically arranged.

[0046] Further, the transmission component 13 includes: A transmission rod 1301 is vertically disposed within the second N-shaped housing 10. A first bevel gear 1302 is provided on the output shaft of the reducer 12, and a second bevel gear 1303 that meshes with the first bevel gear 1302 is provided at the upper end of the transmission rod 1301. Wherein, the lower end of the transmission rod 1301 passes through the lower end of the second N-shaped housing 10 and the first flat plate and / or the second flat plate, and is then coaxially connected to a third bevel gear 1304. The axle of the roller below the first flat plate and / or the second flat plate extends out of the housing of the roller and is then connected to a fourth bevel gear 1305. The third bevel gear 1304 meshes with the fourth bevel gear 1305 to transmit the power of the output shaft of the reducer 12 to the roller.

[0047] Specifically, a row of rollers can be provided at the bottom of both the first flat plate and the second flat plate. There are two rollers in one row. The transmission component can be used to drive the rear rollers (with the moving direction of the whole machine being the front).

[0048] The second N-shaped housing 10 can be set as a steel plate welded structure with a length of 80 - 100 cm, a width of 30 - 40 cm, and a wall thickness of the housing of 3 - 5 mm. Its two lower ends are fixed to the rear parts of the first flat plate and the second flat plate by bolts, and are spaced 50 - 80 cm from the first N-shaped housing.

[0049] An installation seat can be provided at the top of the second N-shaped housing 10 for fixing the second motor 11. The output shaft of the second motor 11 is connected to the reducer 12. Here, the reducer 12 can adopt a reducer 12 with hole input and shaft output (such as RV series worm and worm gear reducer 12, with a reduction ratio of 10:1 to 30:1). The two output shafts of the reducer 12 extend above the first flat plate and the second flat plate respectively. The diameter of the output shaft can be set to 20 - 25 mm, and the material is 45# steel.

[0050] The second motor 11 can be a servo motor with a rated power of 0.75 - 1.5 kW, a rotational speed range of 200 - 500 revolutions per minute, and the power supply can be connected to a movable lithium battery pack (such as the lithium iron phosphate battery of CATL). The second motor 11 can also be controlled by a PLC (such as Siemens S7-200) or an inverter (such as Mitsubishi FR-D700), and the forward speed is controlled by adjusting the rotational speed of the second motor 11.

[0051] The first bevel gear 1302 can be fixed to the end of the output shaft of the reducer 12 through a keyway. The first bevel gear 1302 can be a bevel gear with a module of 2 - 3 and 15 - 20 teeth. The transmission rod 1301 can be a carbon steel rod with a diameter of 25 mm. The upper end of the traditional rod can be fixed with the second bevel gear 1303 through a keyway. The second bevel gear 1303 can be a bevel gear with a module of 2 - 3 and 25 - 30 teeth. The gear material is 40Cr steel, and the surface is subjected to high-frequency quenching. The meshing clearance between the first bevel gear 1302 and the second bevel gear 1303 is adjusted to 0.1 - 0.2 mm.

[0052] The third bevel gear 1304 can be a bevel gear with a module of 2 - 3 and 20 - 25 teeth, and is fixed to the lower end of the transmission rod 1301 through a keyway, and meshes with the fourth bevel gear 1305 (module 2 - 3, 20 - 25 teeth) on the roller shaft.

[0053] Molybdenum disulfide grease can be applied to the meshing surfaces of the first to fourth bevel gears 1305 to reduce frictional losses. A protective cover (made of ABS plastic) is additionally installed on the third bevel gear 1304 and the fourth bevel gear 1305 to prevent soil intrusion.

[0054] The working process of the above technical solution is as follows: After starting the second motor 11, the motor drives the reducer 12 to reduce the rotational speed and increase the torque. The output shaft of the reducer 12 drives the first bevel gear 1302 to rotate, driving the second bevel gear 1303 and the transmission rod 1301 meshing with it to rotate. The third bevel gear 1304 at the lower end of the transmission rod 1301 transmits the power to the fourth bevel gear 1305, driving the roller shaft to rotate, and finally driving the roller to roll.

[0055] Through the design of the second motor 11, the reducer 12 and the symmetric transmission component 13, the above technical solution realizes the automatic drive of the roller, reduces the manual burden; the symmetric drive ensures the machine moves forward smoothly, improves the consistency of the root cutting depth, adapts to different ridge terrains, and improves the operation efficiency. Through the use of bevel gear meshing transmission, it realizes the efficient conversion of vertical power to horizontal direction, with a compact structure and stable transmission; reduces power loss, ensures sufficient driving force of the roller, and enhances the terrain adaptability.

[0056] In another technical solution, the second motor is a variable-frequency motor, which has at least three frequency conversion gears: low speed, medium speed, and high speed. The second motor adopts a variable-frequency motor and is set with three-speed adjustment functions of low speed, medium speed, and high speed, which can flexibly adjust the moving speed of the roller according to the soil conditions of the ridge. For example, switch to the low-speed gear (such as 5 cm / s) in soft soil to reduce the risk of roller slippage; switch to the high-speed gear (such as 20 cm / s) in flat hard soil to improve the operation efficiency. The variable-frequency motor realizes smooth switching between different gears through stepless speed regulation, reduces the start-stop impact, and prolongs the service life of transmission components (such as bevel gears).

[0057] Combined with the reducer and bevel gear transmission structure, the variable-frequency motor outputs greater torque in the low-speed gear to ensure that the roller has sufficient traction in complex terrains. The medium-speed gear (such as 10 cm / s) is suitable for conventional operations, balancing efficiency and cutting quality. The multi-speed adjustment function enables the operator to adjust the traveling rhythm according to the seedling density or root distribution, avoiding missed cutting or over-cutting due to too fast speed.

[0058] The variable-frequency motor realizes precise speed regulation through a control module (such as PLC), reducing the manual operation intensity. During the operation of the motor, the energy consumption is dynamically adjusted according to the load, saving about 15-20% energy compared with a constant-speed motor. In addition, the multi-speed adjustment reduces the mechanical wear caused by frequent start and stop of the motor, improving the reliability of the equipment during continuous operation.

[0059] In another technical solution, the roller is a steel wheel, and anti-slip teeth are provided on the surface of the roller.

[0060] Specifically, the wheel body of the roller can be made of No. 45 steel or Q235 carbon steel, and the outer diameter of the wheel body can be set to 15-20 cm. The wheel axle can be made of GCr15 bearing steel with a diameter of 20 mm, and the surface hardness after quenching treatment reaches HRC55-60. The anti-slip teeth can be set as trapezoidal or triangular protrusions, the tooth height can be set to 3-5 mm, the tooth width is 5-8 mm, and the adjacent tooth spacing is 10-15 mm. The anti-slip teeth can be fixed on the surface of the roller by welding. The anti-slip teeth are distributed to cover 80%-90% of the circumferential surface of the roller, and the number of teeth per circle can be set to 12-18. The tooth top can be rounded, and the fillet radius is R0.5-1 mm to reduce soil adhesion.

[0061] When the machine is moving forward, the steel roller contacts the ground, and the anti-slip teeth are embedded in the soil surface layer, increasing the friction between the roller and the ground. The high rigidity of the steel wheel body supports the weight of the machine, and the anti-slip teeth continuously scrape the soil during the rolling process to prevent the accumulation of mud or gravel. When encountering wet or soft ridges, the anti-slip teeth avoid the roller from idling or skidding by increasing the contact area and biting force, ensuring that the root cutter moves forward stably in a straight line.

[0062] Through the above technical solution, by designing the roller as a steel wheel and setting anti-slip teeth on the surface, the wear resistance and compressive capacity of the roller are significantly enhanced, which is suitable for ridge terrains. The anti-slip tooth structure greatly improves the friction between the roller and the ground, preventing the machine from slipping in wet or soft soil, and ensuring the traveling stability and direction controllability of the root cutter. At the same time, the rigid support of the steel wheel can bear the overall weight of the machine and the impact load during operation, extend the service life of the roller, reduce the maintenance frequency, and thus improve the continuity and reliability of the root cutting operation. In another technical solution, it further includes an n-shaped handrail 14, and the two lower ends of the n-shaped handrail 14 are respectively connected to the ends of the same end of the first flat plate 1 and the second flat plate 2.

[0063] Specifically, the vertical height of the n-shaped handrail 14 can be set to 80 - 120 cm (the height of the cross beam from the ground), the horizontal cross beam length is 60 - 80 cm, and the bending radian radius is 15 - 20 cm. The handrail can be a round tube with a diameter of 30 - 40 mm or a square tube of 30×30 mm, and the material is aluminum alloy (such as 6061-T6) or carbon steel (Q235). The wall thickness is 2 - 3 mm, and the surface can be sprayed with anti-rust paint or wrapped with an anti-slip rubber sleeve. The two lower ends of the handrail are fixed to the ends of the flat plate by welding or bolts, and the connection position is 5 - 10 cm away from the edge of the flat plate.

[0064] The operator holds the horizontal cross beam of the handrail and pushes the machine forward, and the rollers 7 roll along both sides of the ridge. The height of the handrail conforms to ergonomics and reduces the bending amplitude. The anti-slip treatment on the surface of the handrail can increase the holding stability. When testing the friction coefficient of the anti-slip sleeve in a wet soil environment, the static friction coefficient should be greater than 0.4.

[0065] In the above technical solution, the n-shaped handrail 14 provides a stable pushing fulcrum, reduces the physical consumption of the operator, and the lightweight material and anti-slip design improve the operation safety and adapt to complex terrains.

[0066] Although the embodiments of the present invention have been disclosed as above, they are not limited to only the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the field, additional modifications can be easily achieved. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details and the illustrations shown and described here.

Claims

1. A root-cutting machine for cultivating seedlings of Pinus gerardiana Wall. var. wilsonii (Rehd.) W. C. Cheng & L. K. Fu, characterized in that, Including: A first flat plate and a second flat plate, the first flat plate and the second flat plate are arranged in parallel at intervals so that the ridge planted with Pinus gerardiana Wall. is located between the first flat plate and the second flat plate; A first n-shaped box body, the two lower ends of the first n-shaped box body are respectively connected to the first flat plate and the second flat plate; A wire saw driving mechanism, the wire saw driving mechanism is arranged inside the first n-shaped box body, the wire saw driving mechanism is provided with two output ends, and the two output ends of the wire saw driving mechanism reciprocate in the direction across the first flat plate and the second flat plate; A wire saw assembly, the two ends of the wire saw assembly are respectively connected to the two output ends of the wire saw driving mechanism; Wherein, a reversing pulley group is also arranged in the first n-shaped box body, the wire saw assembly bypasses the reversing pulley group, a pair of through holes are opened on the opposite side walls of the vertical part of the first n-shaped box body, and the wire saw assembly passes through the pair of through holes and spans between the opposite side walls of the vertical part of the first n-shaped box body; Rollers that roll along the extending direction of the ridge are arranged on the lower surfaces of the first flat plate and the second flat plate.

2. The Tibetan white pine seedling cutting root machine according to claim 1, characterized in that, The wire saw driving mechanism includes: A left driving rod and a right driving rod, the left driving rod and the right driving rod are horizontally and coaxially arranged in the first n-shaped box body in the direction across the first flat plate and the second flat plate, and the left driving rod and the right driving rod are arranged at intervals; A driving frame, the driving frame is arranged between the left driving rod and the right driving rod, and both the left driving rod and the right driving rod are connected to the driving frame; A triangular cam, which is arranged inside the driving frame; A first motor, which is arranged inside the first n-shaped box body, and the output shaft of the first motor is connected to the triangular cam to drive the triangular cam to rotate and then drive the driving frame to reciprocate.

3. The Tibetan white pine seedling cutting root machine according to claim 1, characterized in that, The wire saw assembly includes a first chain, a wire saw and a second chain connected in sequence, the first chain is connected to the left driving rod, and the second chain is connected to the right driving rod; The reversing pulley group includes: A pair of first sprockets, which are respectively arranged outside the left driving rod and the right driving rod, the first chain bypasses from the upper part of the first sprocket outside the left driving rod, and the second chain bypasses from the upper part of the first sprocket outside the right driving rod; A pair of second sprockets, which are respectively arranged below the left driving rod and the right driving rod, the first chain also bypasses from the lower part of the second sprocket below the left driving rod, and the second chain also bypasses from the lower part of the second sprocket below the right driving rod; The wire saw passes through the pair of through holes and spans between the opposite side walls of the vertical part of the first n-shaped box body.

4. The Tibetan white pine seedling cutting root machine according to claim 3, characterized in that, The second sprocket is rotatably connected to its axle; Arc-shaped long round holes are opened on the side walls of the first n-shaped box body opposite to the end faces of the axles, and both ends of the axle pass through the long round holes and are fixed at selectable positions in the long round holes to adjust the height of the second sprocket.

5. The Tibetan white pine seedling cutting root machine according to claim 4, characterized in that, The side wall of the first n-shaped box body is provided with scales along the edge of the oblong hole. The part of the wheel axle extending outside the oblong hole is provided with threads, and a clamping plate and a nut are also arranged on the part of the wheel axle extending outside the oblong hole. The nut abuts against the clamping plate so that the clamping plate clamps the side wall of the first n-shaped box body, thereby fixing the wheel axle.

6. The Tibetan white pine seedling cutting root machine according to claim 1, characterized in that, It further includes a traveling driving mechanism for driving the roller to roll along the extending direction of the ridge. The traveling driving mechanism includes: A second n-shaped box body, which is arranged behind the first n-shaped box body, and the two lower ends of the second n-shaped box body are respectively connected to the first flat plate and the second flat plate; A second motor, which is arranged on the outer top of the second n-shaped box body, and its output shaft passes through the top of the n-shaped box body and extends into the second n-shaped box body A speed reducer, which is arranged in the second n-shaped box body. The output shaft of the second motor is connected to the input end of the speed reducer. The speed reducer is provided with two output shafts extending above the first flat plate and the second flat plate respectively; Two transmission components, which respectively correspond to the two output shafts of the speed reducer. One transmission component also corresponds to the roller on the first flat plate, and the other transmission component also corresponds to the roller on the second flat plate. The rollers driven by the transmission components on the first flat plate and the second flat plate are symmetrically arranged.

7. The Tibetan white pine seedling cutting root machine according to claim 6, characterized in that, The transmission component includes: A transmission rod, which is vertically arranged in the second n-shaped box body. A first bevel gear is arranged on the output shaft of the speed reducer, and a second bevel gear meshing with the first bevel gear is arranged at the upper end of the transmission rod; Wherein, the lower end of the transmission rod passes through the lower end of the second n-shaped box body and the first flat plate and / or the second flat plate, and is coaxially connected to a third bevel gear. The wheel axle of the roller below the first flat plate and / or the second flat plate extends out of the outer shell of the roller and is then connected to a fourth bevel gear. The third bevel gear meshes with the fourth bevel gear to transmit the power of the output shaft of the speed reducer to the roller.

8. The Tibetan white pine seedling cutting root machine according to claim 6, characterized in that, The second motor is a variable-frequency motor, and at least has three gears of variable frequency: low speed, medium speed and high speed.

9. The Tibetan white pine seedling cutting root machine according to claim 1, characterized in that, The roller is a steel wheel, and the surface of the roller is provided with anti-slip teeth.

10. The Tibetan white pine seedling cutting root machine according to claim 1, characterized in that, It further includes an n-shaped handrail, and the two lower ends of the n-shaped handrail are respectively connected to the ends of the same end of the first flat plate and the second flat plate.

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