A hydraulically controlled crawler self-propelled rotary tiller

Abstract

The present invention discloses a hydraulically controlled crawler self-propelled rotary tiller, which relates to the field of agricultural machinery and includes a central housing, a rotary tillage cover, a moving through groove opened at the top, and a cleaning mechanism inside. A transmission main shaft penetrates through the central housing. The top end of the transmission main shaft is connected to a hydraulic rod through a gearbox. The outer wall of the bottom end of the transmission main shaft is evenly welded with three rotary tillage shafts. The cleaning mechanism is arranged in the rotary tillage cover. The cleaning mechanism consists of a covering component, a distance sensor, a cleaning component, and a protective housing. The cleaning component is used to clean the inner wall of the rotary tillage cover and the rotary tillage shafts. The covering component is used to block the moving through groove of the cleaning component. The distance sensor is used to judge the upward movement degree of the covering component. This application reduces the need for manual use of high-pressure nozzles for re-cleaning, reduces the time and labor intensity of manual cleaning, and is more concentrated and controlled during the flushing process, reducing the problem of mud splashing everywhere carried by the flushing water splashes.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of agricultural machinery, and specifically relates to a crawler self-propelled rotary tiller controlled by hydraulic pressure. Background Art

[0002] A rotary tiller is a commonly used agricultural machinery, which has the characteristics of good soil cutting effect, strong soil crushing ability, and flat land surface after tillage. At the same time, it can cut and crush the root stubbles buried under the ground surface, facilitating the operation of the seeder, and has been widely used. Among them, the crawler self-propelled rotary tiller adopts a crawler walking mechanism and can move in the field by itself, improving the flexibility and efficiency of the operation.

[0003] A self-propelled crawler rotary tiller described in the prior art, the rotary tillage mechanism includes a gearbox, a transmission main shaft, a rotary tillage housing, a rotary tillage shaft, a knife drum, a pin drum, an end plate, and an end cover. The gearbox is connected to the transmission main shaft. Three rotary tillage shafts are arranged at the lower part of the transmission main shaft, and the included angle between the three rotary tillage shafts is 120°. Knife drums with the functions of mowing and soil crushing that can rotate around the rotary tillage shafts are installed on two of the rotary tillage shafts, and a pin drum with the functions of soil crushing and grass pressing with hydraulic pressure is installed on the other rotary tillage shaft.

[0004] Although the above technology adopts a structure of three-axis linkage with self-rotation and revolution to solve the problems of insufficient flatness of the field, insufficient refinement and pulping of the soil in the traditional rotary tiller, and can also deal with weeds in the soil, after use, due to the rotary tillage housing being arranged outside the drum, mud and weeds will accumulate during the operation process, and it is necessary to manually use a high-pressure nozzle to wash the inside of the lifted housing, which increases the time and labor intensity of manual cleaning, and the splashing water will carry mud and splash everywhere. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a crawler self-propelled rotary tiller controlled by hydraulic pressure to solve the technical problems proposed in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A crawler self-propelled rotary tiller controlled by hydraulic pressure includes a central housing, a rotary tillage cover, a moving through groove opened at the top, and a cleaning mechanism inside. A transmission main shaft penetrates through the central housing. The top end of the transmission main shaft is connected to a hydraulic rod through a gearbox. Three rotary tillage shafts are evenly welded on the outer wall of the bottom end of the transmission main shaft. Rotary tillage covers are arranged above the three rotary tillage shafts. Fixed covers are welded on the outer wall of the central housing at the positions of the three rotary tillage covers. Each rotary tillage cover is fixedly connected to the fixed cover by screws. The cleaning mechanism is arranged in the rotary tillage cover;

[0008] The cleaning mechanism consists of a covering component, a distance sensor, a cleaning component, and a protective shell. The cleaning component is used to clean the inner wall of the rotary tillage cover and the rotary tillage shaft. The covering component is used to block the moving through slot of the cleaning component. The distance sensor is used to judge the upward movement degree of the covering component.

[0009] Specifically for this technical solution, the covering component includes a shielding plate which is arranged above the moving through slot. Three movable plates are evenly welded on one outer wall of the shielding plate. Threaded rods are inserted through all three movable plates. Two limit plates are welded at both ends of the other outer wall of the shielding plate. The top wall of the rotary tillage cover is installed with a protective shell by screws. One side of the top end of the protective shell is fixed with a telescopic rod. The telescopic ends of the two telescopic rods penetrate through the shell and are fixedly screwed to the upper surface of the limit plate.

[0010] Specifically for this technical solution, the bottom ends of the three threaded rods are rotatably connected to the top wall of the rotary tillage cover. The other side of the top end of the protective shell is fixedly screwed with an installation shell. The top ends of the three threaded rods penetrate through the top end of the protective shell and extend into the installation shell. A driving motor is installed by screws at the center of the inner top wall of the installation shell. The output end of the driving motor is fixedly connected to the top end of the middle threaded rod through a flange. There are rotating shafts on both sides of the driving motor. The bottom ends of the two rotating shafts are fixedly connected to the top ends of the other two threaded rods through flanges. The top ends of the two rotating shafts are rotatably connected to the inner top wall of the installation shell.

[0011] Specifically for this technical solution, a driving sprocket is fixedly sleeved on the output end of the driving motor. Driven sprockets are fixedly sleeved on the outer walls of the two rotating shafts. The diameter of the driving sprocket is larger than the diameters of the two driven sprockets. The driving sprocket and the two driven sprockets are connected by a transmission chain.

[0012] Specifically for this technical solution, the lower surface of the shielding plate is in contact with the top wall of the rotary tillage cover. The width of the shielding plate is larger than the width of the moving through slot. A distance sensor is embedded at the center of the upper surface of the shielding plate.

[0013] Specifically for this technical solution, a protective shell is fixed on the outer wall of the end of the rotary tillage cover far from the central shell. Arc-shaped through slots are opened on the end face outer wall of the rotary tillage cover and the shell wall of the protective shell. The shapes of the fixed cover and the protective shell are the same as the shape of the rotary tillage cover.

[0014] Specifically, in this technical solution, the cleaning component includes an arc-shaped sealing plate, which is arranged in the arc-shaped through groove. A cleaning arc plate is installed on the side of the arc-shaped sealing plate close to the protective shell by screws. An installation groove is formed in the center of the side of the arc-shaped sealing plate located on the rotary tillage cover. A connecting plate is fixed in the installation groove by screws. A U-shaped water supply pipe is arranged in the connecting plate. One end of the U-shaped water supply pipe penetrates through the arc-shaped sealing plate and is communicated with the inner cavity of the cleaning arc plate.

[0015] Specifically, in this technical solution, a plurality of spray heads are arranged on the upper surface and the lower surface of the cleaning arc plate. The outer wall of the arc-shaped sealing plate is in contact with the inner wall of the arc-shaped through groove. The connecting plate penetrates through the moving through groove and extends to the outside. Lap joints are welded on the outer walls on both sides of the connecting plate above the rotary tillage cover. An electric slide rail is installed on the inner wall of one side of the protective shell by screws. An electric slider is slidably installed on the electric slide rail. One end of the electric slider is fixedly connected to the outer wall of the connecting plate by screws.

[0016] Specifically, in this technical solution, the outer walls on both sides of the connecting plate are in contact with the groove walls of the moving through groove and are slidably connected. The lower surfaces of the two lap joints are in contact with the top wall of the rotary tillage cover and are slidably connected. A support block is fixed on the lower surface of the electric slider. The bottom end of the support block is in contact with the top wall of the rotary tillage cover and is slidably connected.

[0017] Specifically, in this technical solution, a rotary tillage blade, a mowing blade and a pin roller are respectively installed on the three rotary tillage shafts.

[0018] In summary, the present invention mainly has the following beneficial effects: After the crawler-type self-propelled rotary tiller of this application is used, the nozzle of the U-shaped water supply pipe is connected to the water supply source through the telescopic pipe. Then, the drive motor in the covering component is started. Its output end will control the rotation of the three threaded rods under the action of chain drive. Under the restriction of the telescopic rod, the baffle will move upward following the rotation of the threaded rod to expose the moving through groove. When the distance sensor senses the shell wall of the protective shell, it will start the electric slide rail of the cleaning component;

[0019] Then, the electric slider drives the arc-shaped sealing plate to move horizontally through the connecting plate. The moving arc-shaped sealing plate drives the cleaning arc plate to move from the protective shell to the rotary tillage cover. At this time, the water supply source is turned on to send water into the inner cavity of the cleaning arc plate, and the water is sprayed from several nozzles onto the inner wall of the rotary tillage cover, the rotary tillage blades, the mowing blades, and the pin insertion drum. Among them, the arc-shaped sealing plate will first scrape off the soil attached to the inner wall of the cover body, and then rinse it through the nozzles, thus reducing the need for manual use of high-pressure nozzles for re-cleaning, reducing the time and labor intensity of manual cleaning, and being more concentrated and controlled during the rinsing process, reducing the problem of the rinsing water splashing everywhere with soil. At the same time, the setting of the baffle can prevent the problem that soil enters the protective shell during the use of the rotary tillage machine and causes blockage, ensuring the smooth use of the subsequent cleaning mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the device of the present invention;

[0021] Figure 2 is a side sectional view of the rotary tillage cover of the present invention;

[0022] Figure 3 is a schematic installation diagram of the cleaning mechanism of the present invention;

[0023] Figure 4 is a schematic diagram of the rotary tillage cover of the present invention;

[0024] Figure 5 is a structural diagram of the cleaning mechanism of the present invention;

[0025] Figure 6 is an enlarged view of part A of the present invention;

[0026] Figure 7 is of the present invention Figure 5 side structural diagram.

[0027] BRIEF DESCRIPTION OF THE DRAWINGS: 1. Central housing; 101. Transmission main shaft; 102. Gearbox; 1021. Rotary tillage shaft; 103. Hydraulic rod; 1031. Fixed cover; 2. Rotary tillage cover; 201. Moving through slot; 202. Arc-shaped through slot; 203. Protective shell; 3. Cleaning mechanism; 4. Covering assembly; 401. Baffle; 402. Movable plate; 403. Threaded rod; 404. Rotating shaft; 4041. Driven sprocket; 405. Driving motor; 4051. Driving sprocket; 406. Transmission chain; 407. Limiting plate; 408. Telescopic rod; 5. Distance sensor; 6. Cleaning assembly; 601. Electric slide rail; 602. Connecting plate; 603. Arc-shaped sealing plate; 6031. Installation groove; 604. Cleaning arc plate; 6041. Nozzle; 605. U-shaped water supply pipe; 606. Lapping block; 607. Electric slider; 6071. Support block; 7. Protective shell; 701. Installation shell. DETAILED DESCRIPTION OF THE INVENTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0029] The embodiments of the present invention will be described below according to the overall structure of the present invention. Embodiment

[0030] The rotary tillage blade, mowing blade and pin inserting drum in the present application all adopt the structural form of a self-propelled crawler rotary tiller with the application number CN201410198892.0;

[0031] And the pipe orifice of the U-shaped water supply pipe 605 can be connected to a telescopic pipe and a water supply source. At the same time, a control module is installed on the side wall of each protective shell 7. The control module is provided with a separate power supply and a controller to control the electrical components in the cleaning mechanism 3 respectively. The control module is also connected to the control device of the rotary tiller through a wire.

[0032] Please refer to Figures 1-4 As shown, a hydraulically controlled crawler self-propelled rotary tiller includes a central housing 1, a rotary tillage cover 2, a moving through groove 201 opened at the top, and a cleaning mechanism 3 inside. A transmission main shaft 101 passes through the central housing 1. The top end of the transmission main shaft 101 is connected to a hydraulic rod 103 through a gearbox 102. The outer wall of the bottom end of the transmission main shaft 101 is evenly welded with three rotary tillage shafts 1021. Above the three rotary tillage shafts 1021, there is a rotary tillage cover 2. A rotary tillage blade, a mowing blade and a pin inserting drum are respectively installed on the three rotary tillage shafts 1021. Fixed covers 1031 are welded on the outer wall of the central housing 1 at the positions of the three rotary tillage covers 2. Each rotary tillage cover 2 is fixedly connected to the fixed cover 1031 by screws. The cleaning mechanism 3 is arranged in the rotary tillage cover 2. A protective shell 203 is fixed on the outer wall of the end of the rotary tillage cover 2 away from the central housing 1. Arc-shaped through grooves 202 are opened on the outer wall of the end face of the rotary tillage cover 2 and the wall of the protective shell 203. The shapes of the fixed cover 1031 and the protective shell 203 are the same as the shape of the rotary tillage cover 2;

[0033] The cleaning mechanism 3 is composed of a covering component 4, a distance sensor 5, a cleaning component 6 and a protective shell 7. The cleaning component 6 is used to clean the inner wall of the rotary tillage cover 2 and the rotary tillage shaft 1021. The covering component 4 is used to block the moving through groove 201 of the cleaning component 6. The distance sensor 5 is used to judge the upward movement degree of the covering component 4.

[0034] After the use of the hydraulic-controlled crawler self-propelled rotary tiller, the user connects the telescopic pipe to the cleaning component 6. At this time, a start signal is sent to the controller of the control module through the control device. The controller first starts the covering component 4, so that the moving through groove 201 of the rotary tiller cover 2 is exposed, canceling the blockage of the cleaning component 6. As the actuator (the baffle plate 401 in the text) in the covering component 4 moves upward, it will drive the distance sensor 5 to move until the distance sensor 5 senses the inner top wall of the protective shell 7, and then sends a signal to the controller. The controller starts the cleaning component 6, and at the same time the water supply source starts. Then, through the actuators (the arc-shaped sealing plate 603 and the cleaning arc plate 604 in the text) of the cleaning component 6, the inner wall of the rotary tiller cover 2 and the outer walls of the rotary tiller blades, mowing blades and pin drums are cleaned, washing away the attached soil and weeds. Therefore, this application can reduce the need for manual use of high-pressure nozzles for re-cleaning, reduce the time and labor intensity of manual cleaning, and be more concentrated and controlled during the flushing process, reducing the problem of muddy water splashing everywhere carried by the flushing water. At the same time, it can also avoid the problem of soil entering the protective shell 7 and causing blockage during the use of the rotary tiller, ensuring the smooth use of the subsequent cleaning mechanism 3.

[0035] Please refer to Figure 3 , Figure 5 and Figure 7 As shown, the covering component 4 includes a baffle plate 401. The baffle plate 401 is arranged above the moving through groove 201. Three movable plates 402 are evenly welded on one outer wall of the baffle plate 401. Threaded rods 403 are inserted through all three movable plates 402. Two limit plates 407 are welded at both ends of the other outer wall of the baffle plate 401. The top wall of the rotary tiller cover 2 is installed with a protective shell 7 by screws. One side of the top end of the protective shell 7 is fixed with a telescopic rod 408. The telescopic ends of the two telescopic rods 408 penetrate through the shell and are fixedly screwed to the upper surface of the limit plate 407;

[0036] The bottom ends of the three threaded rods 403 are all rotatably connected to the top wall of the rotary tillage cover 2. On the other side of the top end of the protective housing 7, an installation housing 701 is fixed by screws. The top ends of the three threaded rods 403 all penetrate through the top end of the protective housing 7 and extend into the installation housing 701. At the center of the inner top wall of the installation housing 701, a driving motor 405 is installed by screws. The output end of the driving motor 405 is fixedly connected to the top end of the middle threaded rod 403 through a flange. On both sides of the driving motor 405, there are rotating shafts 404. The bottom ends of the two rotating shafts 404 are fixedly connected to the top ends of the other two threaded rods 403 through flanges. The top ends of the two rotating shafts 404 are rotatably connected to the inner top wall of the installation housing 701. A driving sprocket 4051 is fixedly sleeved on the output end of the driving motor 405. Driven sprockets 4041 are fixedly sleeved on the outer walls of the two rotating shafts 404. The diameter of the driving sprocket 4051 is larger than the diameters of the two driven sprockets 4041. The driving sprocket 4051 and the two driven sprockets 4041 are connected by a transmission chain 406. The lower surface of the shielding plate 401 is in contact with the top wall of the rotary tillage cover 2. The width of the shielding plate 401 is larger than the width of the moving through slot 201. A distance sensor 5 is embedded at the center of the upper surface of the shielding plate 401.

[0037] The controller starts the driving motor 405. The output end of the driving motor 405 drives the connected threaded rod 403 to rotate. At the same time, it also drives the driving sprocket 4051 fixedly sleeved on it to rotate. The driving sprocket 4051 drives the two driven sprockets 4041 to rotate through the transmission chain 406. The two driven sprockets 4041 drive the penetrated rotating shafts 404 to rotate, thereby controlling the rotation of the other two threaded rods 403, so that the three threaded rods 403 rotate synchronously and in the same direction. At this time, the movable plate 402 will move upward following the rotation of the threaded rod 403. The moving movable plate 402 will drive the shielding plate 401 to move and expose the moving through slot 201. The shielding plate 401 will also drive the limiting plate 407 to move and contract the telescopic end of the telescopic rod 408. At this time, the distance sensor 5 will move closer to the inner top wall of the protective housing 7 following the upward movement of the shielding plate 401 until it reaches the inner top wall of the sensor and then sends a signal to the controller of the control module.

[0038] Please refer to Figures 5-7As shown in the figure, the cleaning component 6 includes an arc-shaped sealing plate 603, which is arranged in the arc-shaped through groove 202. A cleaning arc plate 604 is installed on one side of the arc-shaped sealing plate 603 close to the protective shell 203 by screws. An installation groove 6031 is opened at the center of the side of the arc-shaped sealing plate 603 located on the rotary tillage cover 2. A connecting plate 602 is fixed in the installation groove 6031 by screws. A U-shaped water supply pipe 605 is arranged in the connecting plate 602. One end of the U-shaped water supply pipe 605 penetrates through the arc-shaped sealing plate 603 and is communicated with the inner cavity of the cleaning arc plate 604. A plurality of spray heads 6041 are arranged on the upper surface and the lower surface of the cleaning arc plate 604. The outer wall of the arc-shaped sealing plate 603 is in contact with the inner wall of the arc-shaped through groove 202. The connecting plate 602 penetrates through the moving through groove 201 and extends to the outside. Lapping blocks 606 are welded on the outer walls on both sides of the connecting plate 602 above the rotary tillage cover 2. An electric slide rail 601 is installed on the inner wall of one side of the protective shell 7 by screws. An electric slider 607 is slidably installed on the electric slide rail 601. One end of the electric slider 607 is fixedly connected to the outer wall of the connecting plate 602 by screws. The outer walls on both sides of the connecting plate 602 are in contact with the groove walls of the moving through groove 201 and are slidably connected. The lower surfaces of the two lapping blocks 606 are in contact with the top wall of the rotary tillage cover 2 and are slidably connected. A support block 6071 is fixed on the lower surface of the electric slider 607. The bottom end of the support block 6071 is in contact with the top wall of the rotary tillage cover 2 and is slidably connected.

[0039] During cleaning, the user connects the telescopic pipe to the pipe orifice of the U-shaped water supply pipe 605. Then, after the controller receives the signal from the distance sensor 5, it will start the electric slide rail 601. The electric slide rail 601 controls the electric slider 607 to move horizontally. The moving electric slider 607 will drive the connecting plate 602 to move along the moving through groove 201. The support block 6071 and the lapping block 606 can play a supporting role to ensure the smoothness of the movement. When the connecting plate 602 moves, it will drive the arc-shaped sealing plate 603 to move, so that the arc-shaped sealing plate 603 moves out of the arc-shaped through groove 202. At the same time, the arc-shaped sealing plate 603 will drive the cleaning arc plate 604 to move, so that the cleaning arc plate 604 moves from inside the protective shell 203 into the rotary tillage cover 2;

[0040] At this time, the water supply source is turned on. Water will enter the inner cavity of the cleaning arc plate 604 through the telescopic pipe and the U-shaped water supply pipe 605 and spray out from a plurality of spray heads 6041. The moving arc-shaped sealing plate 603 first scrapes off the soil and weeds attached to the inner wall of the rotary tillage cover 2, and then flushes the inner wall of the rotary tillage cover 2, the passing rotary tillage knives, mowing knives and the outer wall of the pin drum with the sprayed water. The flushed water, soil and weeds will fall to the ground along the rotary tillage cover 2.

[0041] The working principle of the present invention is as follows:

[0042] After the use of the hydraulic-controlled crawler self-propelled rotary tiller, the user connects the telescopic pipe to the nozzle of the U-shaped water supply pipe 605. At this time, a start signal is sent to the controller of the control module through the control device. The controller first starts the drive motor 405. The output end of the drive motor 405 drives the connected threaded rod 403 to rotate. At the same time, it also drives the actively arranged sprocket 4051 to rotate. The actively arranged sprocket 4051 drives two driven sprockets 4041 to rotate through the transmission chain 406. The two driven sprockets 4041 drive the penetrated rotating shaft 404 to rotate, thereby controlling the rotation of the other two threaded rods 403, so that the three threaded rods 403 rotate synchronously in the same direction. At this time, the movable plate 402 will move upward following the rotation of the threaded rod 403. The moving movable plate 402 will drive the shielding plate 401 to move to expose the moving through groove 201. The shielding plate 401 will also drive the limiting plate 407 to move and contract the telescopic end of the telescopic rod 408. At this time, the distance sensor 5 will move closer to the inner top wall of the protective shell 7 following the upward movement of the shielding plate 401 until it reaches the inner top wall of the sensor and then sends a signal to the controller of the control module;

[0043] After the controller receives the signal from the distance sensor 5, it will start the electric slide rail 601. The electric slide rail 601 controls the electric slider 607 to move horizontally. The moving electric slider 607 will drive the connecting plate 602 to move along the moving through groove 201. The support block 6071 and the overlapping block 606 can play a supporting role to ensure the smoothness of the movement. When the connecting plate 602 moves, it will drive the arc-shaped sealing plate 603 to move, so that the arc-shaped sealing plate 603 moves out of the arc-shaped through groove 202. At the same time, the arc-shaped sealing plate 603 will drive the cleaning arc plate 604 to move, so that the cleaning arc plate 604 moves into the rotary tillage cover 2 from the protective shell 203;

[0044] At this time, the water supply source is turned on. Water will enter the inner cavity of the cleaning arc plate 604 through the telescopic pipe and the U-shaped water supply pipe 605 and be sprayed out from a number of nozzles 6041. The moving arc-shaped sealing plate 603 first scrapes off the soil and weeds attached to the inner wall of the rotary tillage cover 2, and then flushes the inner wall of the rotary tillage cover 2, the passing rotary tillage knives, mowing knives and the outer wall of the pin drum with the sprayed water. The flushed water, soil and weeds will fall to the ground along the rotary tillage cover 2.

[0045] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention and not limitations to the invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A hydraulically controlled crawler self-propelled rotary tiller, comprising a central housing (1), a rotary tiller cover (2), a moving through groove (201) opened at the top, and a cleaning mechanism (3) inside, characterized in that , a transmission main shaft (101) is penetrated through the central housing (1). The top end of the transmission main shaft (101) is connected to a hydraulic rod (103) through a gearbox (102). Three rotary tillage shafts (1021) are evenly welded to the outer wall of the bottom end of the transmission main shaft (101). Above the three rotary tillage shafts (1021), there is a rotary tillage cover (2). Fixed covers (1031) are welded to the outer wall of the central housing (1) at the positions of the three rotary tillage covers (2). Each rotary tillage cover (2) is fixedly connected to the fixed cover (1031) by screws. A cleaning mechanism (3) is arranged in the rotary tillage cover (2). A protective housing (203) is fixed to the outer wall of the end of the rotary tillage cover (2) away from the central housing (1). Arc-shaped through grooves (202) are formed in the end face outer wall of the rotary tillage cover (2) and the wall of the protective housing (203). The shapes of the fixed cover (1031) and the protective housing (203) are the same as that of the rotary tillage cover (2); The cleaning mechanism (3) consists of a covering component (4), a distance sensor (5), a cleaning component (6) and a protective housing (7). The cleaning component (6) is used for cleaning the inner wall of the rotary tillage cover (2) and the rotary tillage shaft (1021). The covering component (4) is used for covering the moving through groove (201) of the cleaning component (6). The distance sensor (5) is used for judging the upward movement degree of the covering component (4); The covering component (4) includes a shielding plate (401). The shielding plate (401) is arranged above the moving through groove (201). Three movable plates (402) are evenly welded to one side outer wall of the shielding plate (401). Threaded rods (403) are penetrated through the three movable plates (402). Limiting plates (407) are welded to both ends of the other side outer wall of the shielding plate (401). The top wall of the rotary tillage cover (2) is provided with a protective housing (7) by screws. One side of the top end of the protective housing (7) is fixed with a telescopic rod (408). The telescopic ends of the two telescopic rods (408) penetrate through the housing and are fixedly screwed to the upper surface of the limiting plate (407). The lower surface of the shielding plate (401) is in contact with the top wall of the rotary tillage cover (2). The width of the shielding plate (401) is greater than the width of the moving through groove (201). A distance sensor (5) is embedded in the center of the upper surface of the shielding plate (401); The cleaning assembly (6) comprises an arc-shaped sealing plate (603), the arc-shaped sealing plate (603) being arranged in the arc-shaped through groove (202), a cleaning arc plate (604) being mounted on one side of the arc-shaped sealing plate (603) close to the protective shell (203) by means of screws, a mounting groove (6031) being provided in the center of one side of the rotary tillage cover (2), a connecting plate (602) being fixed in the mounting groove (6031) by means of screws, a U-shaped water supply pipe (605) being arranged in the connecting plate (602), one end of the U-shaped water supply pipe (605) passing through the arc-shaped sealing plate (603) and being in communication with the inner cavity of the cleaning arc plate (604), and both side outer walls of the connecting plate (602) being in contact with the groove wall of the movable through groove (201) and being in sliding connection.

2. The tracked self-propelled rotary tiller controlled by hydraulic pressure according to claim 1, wherein The bottom ends of the three threaded rods (403) are rotatably connected to the top wall of the rotary tillage cover (2); a mounting shell (701) is fixed to the other side of the top of the protective shell (7) by screws; the top ends of the three threaded rods (403) pass through the top of the protective shell (7) and extend into the mounting shell (701); a driving motor (405) is screwed to the center of the inner top wall of the mounting shell (701); an output end of the driving motor (405) is fixedly connected to the top of the middle threaded rod (403) by a flange; rotating shafts (404) are provided on both sides of the driving motor (405); the bottom ends of the two rotating shafts (404) are fixedly connected to the tops of the other two threaded rods (403) by flanges; and the top ends of the two rotating shafts (404) are rotatably connected to the inner top wall of the mounting shell (701).

3. A hydraulic-controlled crawler self-propelled rotary tiller according to claim 2, characterized in that, A driving sprocket (4051) is fixedly sleeved on the output end of the driving motor (405), and driven sprockets (4041) are fixedly sleeved on the outer walls of the two rotating shafts (404). The diameter of the driving sprocket (4051) is greater than the diameters of the two driven sprockets (4041), and the driving sprocket (4051) and the two driven sprockets (4041) are connected in transmission via a transmission chain (406).

4. A hydraulic-controlled crawler self-propelled rotary tiller according to claim 1, characterized in that, The upper and lower surfaces of the cleaning arc plate (604) are both provided with a plurality of nozzles (6041); the outer walls of the arc-shaped sealing plate (603) are in contact with the inner walls of the arc-shaped through groove (202); the connecting plate (602) penetrates the movable through groove (201) and extends to the outside; and the outer walls on both sides of the connecting plate (602) are located above the rotary tillage cover (2) and are welded with lap blocks (606); an electric slide rail (601) is installed on the inner wall of one side of the protective shell (7) by means of screws; an electric slider (607) is slidably installed on the electric slide rail (601); and one end of the electric slider (607) is fixedly connected to the outer wall of the connecting plate (602) by means of screws.

5. A hydraulic-controlled crawler self-propelled rotary tiller according to claim 4, characterized in that, The lower surfaces of the two overlapping blocks (606) are both connected to the top wall of the rotary tillage hood (2) in a sliding connection, and a support block (6071) is fixed to the lower surface of the electric slider (607), and the bottom end of the support block (6071) is connected to the top wall of the rotary tillage hood (2) in a sliding connection.

6. A crawler self-propelled rotary tiller controlled by hydraulic pressure according to claim 1, characterized in that, Rotary tillage blades, mowing blades and needle inserting drums are respectively installed on the three rotary tillage shafts (1021).

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