A soil ripper for bulldozers used in land leveling projects

Abstract

This invention discloses a ripper for a bulldozer used in land leveling projects, comprising a bulldozing mechanism with a ripper mechanism mounted on its rear side. The ripper mechanism includes a support connection mechanism, three sets of multi-segment linear drive mechanisms, and a cutter angle drive mechanism. The support connection mechanism includes a rotating roller, with the three sets of multi-segment linear drive mechanisms symmetrically mounted in a circle on the outer wall of the roller. Each of the three sets of multi-segment linear drive mechanisms is equipped with three sets of ripping cutter mechanisms, three cutter angle arc sliding mechanisms, and three cutter angle drive mechanisms. The ripper in this invention employs a multi-segment linear drive mechanism. Through the control of a servo motor and cylinders, the angle and cutting depth of the cutter teeth can be flexibly adjusted. When adjacent cutter teeth in the cutter tooth set perform the ripping task, they form a coordinated cutting angle based on the contraction degree of the double-rod cylinder. This coordinated working mode ensures that the cutter teeth operate at the optimal angle when cutting into the soil, improving the efficiency of soil loosening.

Description

Technical Field

[0001] This invention relates to the field of land operation machinery technology, and in particular to a ripper for a bulldozer used in land leveling projects. Background Technology

[0002] Land leveling is an indispensable and crucial part of agriculture, construction, and infrastructure development, especially in agriculture, where good land leveling directly affects crop growth and yield. Bulldozers, as the primary construction machinery, play a vital role in this process. They are not only responsible for moving and leveling the soil, but also play a key role in loosening and redistributing the soil, ensuring that the land is suitable for cultivation and vegetation growth.

[0003] Most traditional soil rippers have fixed blade angles and cutting depths, which cannot be flexibly adjusted according to different soil types (such as sandy soil, clay, stony soil, etc.) or construction needs. This results in poor soil loosening effect when facing hard or dense soil, increasing the difficulty of subsequent construction. At the same time, when leveling large areas of land, traditional soil rippers often need to pass through multiple times to achieve the desired soil loosening effect, wasting time and energy.

[0004] Therefore, a soil ripper for bulldozers used in land leveling projects is needed. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following solution: a ripper for a bulldozer used in land leveling projects, comprising:

[0006] The bulldozing mechanism has a ripper mechanism installed at its rear.

[0007] The ripper mechanism includes a support connection mechanism, three sets of multi-segment linear drive mechanisms, and a cutter tooth angle drive mechanism;

[0008] The support connection mechanism includes a rotating roller, and three sets of multi-segment linear drive mechanisms are symmetrically installed in a circle on the outer wall of the rotating roller;

[0009] Each of the three multi-segment linear drive mechanisms is equipped with three sets of soil loosening cutter tooth mechanisms, three cutter tooth angle arc sliding mechanisms, and three cutter tooth angle drive mechanisms.

[0010] Each of the three sets of soil loosening cutter tooth mechanisms includes a cross brace tube, two cutter tooth tube frames, two cutter tooth mounting plates, a cutter tooth assembly, and a flexible connecting plate;

[0011] Two blade-tooth tube frames are fixedly installed on the adjacent side of two blade-tooth mounting plates. The blade-tooth assembly is bolted to the other side of the two blade-tooth mounting plates. The cross brace tube is fixedly connected to the corresponding blade-tooth mounting plate through multiple flexible connecting plates.

[0012] Each of the three tooth angle arc sliding mechanisms includes a support plate, an outer large arc sliding groove, an inner small arc sliding groove, an outer sliding rod bolt, and an inner sliding rod bolt;

[0013] The tops of the outer slide bar bolt and the inner slide bar bolt are respectively bolted to the bottom of the two toothed tube frames. The outer large arc slide groove and the inner small arc slide groove are respectively opened in parallel on the top of the support plate. The outer slide bar bolt is embedded and slidably connected to the inside of the outer large arc slide groove, and the inner slide bar bolt is embedded and slidably connected to the inside of the inner small arc slide groove.

[0014] The multi-segment linear drive mechanism includes three ball nuts, three limit slides, and two limit slide rods;

[0015] The tops of the three ball nuts are screwed to the bottom of the corresponding support plates of the three tooth angle arc sliding mechanisms, and the three limit slides and two limit slide rods are set on both sides of the ball nuts and screwed to the support plates.

[0016] The cutter angle drive mechanism includes a double-rod cylinder, a V-shaped plate, a mounting base, and two side-bending fixed rods;

[0017] The ends of the two rods of the double-rod cylinder are bolted to one side of two V-shaped plates. The top of the other side of the two V-shaped plates is fixedly connected to the top of two side-bending fixing rods. The other ends of the two side-bending fixing rods are fixedly connected to the rear side of the tooth mounting plate. The mounting seat is bolted to the cross brace tube.

[0018] More preferably, the bulldozing mechanism includes a bulldozer, a bulldozer blade, and a lifting robotic arm. The bulldozer blade is installed on the front side of the bulldozer, and the lifting robotic arm is fixed with bolts on the rear side of the bulldozer.

[0019] A further preferred embodiment of the bracket connection mechanism includes a tripod, a U-shaped frame, two side support frames, a rotating roller, two bearing seats, a servo motor, and a moving tire;

[0020] The top edge of the spiral frame is welded to the bottom of the tripod, and the two side support frames are bolted to both sides of the spiral frame. The two side support frames are rotatably connected to the two ends of the rotating roller through two bearing seats.

[0021] In a further preferred embodiment, the bracket connection mechanism also includes a servo motor and movable tires. The servo motor is mounted on a side support frame, and its output shaft is fixedly connected to one end of the rotating roller. Movable tires are mounted on the outer sides of both side support frames.

[0022] A further preferred embodiment of the multi-segment linear drive mechanism includes a stepper motor, two fixed plates, and a lead screw;

[0023] Two fixed plates are rotatably connected to the two ends of the lead screw via bearings on adjacent sides. One side of the stepper motor is installed on the outside of one of the fixed plates, and the output shaft of the stepper motor is fixedly connected to one end of the lead screw. A ball nut is installed on the outside of the lead screw.

[0024] In a further preferred embodiment, both ends of the two limiting slide rods are fixedly welded between two fixed plates and located on both sides of the lead screw.

[0025] A further preferred embodiment has a centrally bent fixing rod fixedly connected to one side of the mounting base, and the other end of the centrally bent fixing rod is screwed to the outer wall of the double-rod cylinder.

[0026] In a further preferred embodiment, the bulldozer is equipped with a controller, which is electrically connected to a double-rod cylinder, a stepper motor, and a servo motor. The controller is used to control the start, stop, and angle adjustment of the electrical equipment in the ripper mechanism.

[0027] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0028] I. The soil ripper in this invention adopts a multi-segment linear drive mechanism. Through the control of servo motors and cylinders, the angle and cutting depth of the cutter teeth can be flexibly adjusted. When the adjacent cutter teeth of the cutter tooth group perform the soil ripping task, they can form a coordinated cutting angle according to the degree of contraction of the double-rod cylinder. The coordinated working mode can ensure that the cutter teeth operate at the optimal angle when cutting into the soil, which improves the efficiency of soil loosening. The soil ripper can be precisely adjusted according to different soil types and construction needs, thereby significantly improving the soil loosening effect in hard or dense soil and reducing the difficulty of subsequent construction.

[0029] II. This ripper integrates a multi-segment linear drive mechanism, in conjunction with a stepper motor. After the cutter teeth are adjusted or during normal startup, the mechanism can quickly retract and expand. By controlling the stepper motor to drive the lead screw, the layout of the cutter teeth can be flexibly adjusted during operation, reducing the diameter of the loosened soil and increasing the force applied to the soil. This significantly increases the soil density within the loosened area, effectively breaking through the compacted soil structure and making the soil easier for subsequent leveling operations. It is especially suitable for compacted soil, achieving a deeper loosening effect and thus achieving better loosening results in a single operation. The efficient operation mode reduces the need for multiple passes, significantly improving construction efficiency, saving time and energy, and thereby reducing overall construction costs. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the main body of the invention;

[0032] Figure 2 This is a schematic diagram of the bracket connection mechanism of the present invention;

[0033] Figure 3 This is a schematic diagram of the cutter tooth angle arc sliding mechanism and the multi-segment linear drive mechanism of the present invention;

[0034] Figure 4 This is a top view schematic diagram of the cutting tooth angle driving mechanism of the present invention;

[0035] Figure 5 This is a schematic diagram of the cutting tooth angle driving mechanism of the present invention;

[0036] Figure 6 This is a schematic diagram showing the positions of the rotating roller and servo motor of the present invention.

[0037] Reference numerals: 10. Bulldozing mechanism; 11. Bulldozer; 12. Bulldozer blade; 13. Lifting robotic arm; 20. Ripper mechanism; 30. Support connection mechanism; 31. Tripod; 32. Retractable frame; 33. Side support frame; 34. Rotating roller; 35. Bearing seat; 36. Servo motor; 37. Moving tire; 40. Ripper tooth mechanism; 41. Cross brace tube; 42. Tooth tooth tube frame; 43. Tooth tooth mounting plate; 44. Tooth tooth assembly; 45. Flexible connecting plate; 50. Blade Tooth angle arc sliding mechanism; 51. Support plate; 52. Outer large arc sliding groove; 53. Inner small arc sliding groove; 54. Outer sliding rod bolt; 55. Inner sliding rod bolt; 60. Multi-segment linear drive mechanism; 61. Stepper motor; 62. Fixing plate; 63. Lead screw; 64. Ball nut; 65. Limiting slide block; 66. Limiting sliding rod; 70. Tooth angle drive mechanism; 71. Double rod cylinder; 72. V-shaped plate; 73. Mounting base; 74. Side-bending type fixing rod; 75. Medium-bending type fixing rod. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0040] Example

[0041] like Figure 1-6 As shown, a ripper for a bulldozer used in land leveling engineering in this embodiment includes: a bulldozing mechanism 10, and a ripper mechanism 20 installed on the rear side of the bulldozing mechanism 10.

[0042] The soil ripper mechanism 20 includes a support connection mechanism 30, three sets of multi-segment linear drive mechanisms 60, and a cutter tooth angle drive mechanism 70; the support connection mechanism 30 includes a rotating roller 34, and the three sets of multi-segment linear drive mechanisms 60 are symmetrically installed in a circle on the outer wall of the rotating roller 34; each of the three sets of multi-segment linear drive mechanisms 60 is equipped with three sets of soil ripping cutter tooth mechanisms 40, three cutter tooth angle arc sliding mechanisms 50, and three cutter tooth angle drive mechanisms 70.

[0043] Each of the three sets of soil loosening cutter tooth mechanisms 40 includes a cross brace tube 41, two cutter tooth tube frames 42, two cutter tooth mounting plates 43, a cutter tooth assembly 44, and a flexible connecting plate 45. The two cutter tooth tube frames 42 are fixedly installed on the adjacent side of the two cutter tooth mounting plates 43, and the cutter tooth assemblies 44 are respectively bolted to the other side of the two cutter tooth mounting plates 43. The cross brace tube 41 is fixedly connected to the corresponding cutter tooth mounting plate 43 through multiple flexible connecting plates 45.

[0044] Each of the three cutter tooth angle arc sliding mechanisms 50 includes a support plate 51, an outer large arc sliding groove 52, an inner small arc sliding groove 53, an outer sliding rod bolt 54, and an inner sliding rod bolt 55. The tops of the outer sliding rod bolt 54 and the inner sliding rod bolt 55 are respectively bolted to the bottom of the two cutter tooth tube frames 42. The outer large arc sliding groove 52 and the inner small arc sliding groove 53 are respectively opened side by side on the top of the support plate 51. The outer sliding rod bolt 54 is embedded and slidably connected to the inside of the outer large arc sliding groove 52, and the inner sliding rod bolt 55 is embedded and slidably connected to the inside of the inner small arc sliding groove 53.

[0045] The soil loosener adopts a multi-segment linear drive mechanism. Through the control of servo motors and cylinders, the angle and cutting depth of the cutter teeth can be flexibly adjusted. When the adjacent cutter teeth of the cutter tooth group perform the soil loosening task, they can form a coordinated cutting angle according to the degree of contraction of the double-rod cylinder. The coordinated working mode can ensure that the cutter teeth operate at the optimal angle when cutting into the soil, thus improving the efficiency of soil loosening.

[0046] The multi-segment linear drive mechanism 60 includes three ball nuts 64, three limiting slides 65, and two limiting slide rods 66; the tops of the three ball nuts 64 are respectively screwed to the bottom of the corresponding support plates 51 of the three tooth angle arc sliding mechanisms 50, and the three limiting slides 65 and the two limiting slide rods 66 are arranged on both sides of the ball nuts 64 and screwed to the support plates 51. The multi-segment linear drive mechanism 60 also includes a stepper motor 61, two fixing plates 62, and a lead screw 63.

[0047] Two fixed plates 62 are rotatably connected to the two ends of the lead screw 63 via bearings on adjacent sides. One side of the stepper motor 61 is installed on the outside of one fixed plate 62, and the output shaft of the stepper motor 61 is fixedly connected to one end of the lead screw 63. The ball nut 64 is installed on the outside of the lead screw 63 and is responsible for converting the rotational motion provided by the stepper motor 61 into linear displacement. The two ends of the two limit slide rods 66 are fixedly welded between the two fixed plates 62 and are located on both sides of the lead screw 63.

[0048] The limiting slide 65 and the limiting slide rod 66 are positioned on both sides of the ball nut 64 to limit and guide the cutting teeth, preventing excessive displacement during operation.

[0049] The cutting tooth angle drive mechanism 70 includes a double-rod cylinder 71, a V-shaped plate 72, a mounting base 73, and two side-bending fixed rods 74;

[0050] The ends of the two rods of the double-rod cylinder 71 are bolted to one side of the two V-shaped plates 72. The top of the other side of the two V-shaped plates 72 is fixedly connected to the top of the two side-bending fixed rods 74. The other ends of the two side-bending fixed rods 74 are fixedly connected to the rear side of the knife-tooth mounting plate 43. The mounting base 73 is bolted to the cross brace tube 41.

[0051] The bulldozing mechanism 10 includes a bulldozer 11, a bulldozer blade 12, and a lifting mechanical arm 13. The bulldozer blade 12 is installed on the front side of the bulldozer 11, and the lifting mechanical arm 13 is fixedly bolted to the rear side of the bulldozer 11.

[0052] In this embodiment, the bracket connection mechanism 30 includes a tripod 31, a spiral frame 32, two side support frames 33, a rotating roller 34, two bearing seats 35, a servo motor 36, and a movable tire 37. The top side of the spiral frame 32 is welded to the bottom of the tripod 31. The two side support frames 33 are bolted to both sides of the spiral frame 32. The two side support frames 33 are rotatably connected to both ends of the rotating roller 34 through two bearing seats 35. The bracket connection mechanism 30 also includes a servo motor 36 and a movable tire 37. The servo motor 36 is mounted on one side support frame 33, and its output shaft end is fixedly connected to one end of the rotating roller 34. Movable tires 37 are mounted on the outer sides of both side support frames 33.

[0053] The tripod 31 provides good stability, ensuring that the entire support connection mechanism 30 will not tilt or shake during operation. The top side of the U-shaped frame 32 is welded to the tripod 31 to form a sturdy support structure, which effectively withstands the forces and vibrations generated during operation. The movable tires 37 installed on the outside of the side support frame 33 enable the support connection mechanism 30 and other mechanisms to move in the working environment.

[0054] In this embodiment, specifically: a medium-bend fixing rod 75 is fixedly connected to one side of the mounting base 73, and the other end of the medium-bend fixing rod 75 is screwed to the outer side wall of the double-rod cylinder 71, thereby increasing the stability of the double-rod cylinder 71.

[0055] In a further preferred embodiment, the bulldozer 11 is equipped with a controller, which is electrically connected to the double-rod cylinder 71, the stepper motor 61 and the servo motor 36. The controller is used to control the start, stop and angle adjustment of the electrical equipment in the ripper mechanism 20.

[0056] Working principle: When the operator is ready to use the bulldozer, the bulldozer 11 needs to be started first. The engine of the bulldozer is activated by the power switch in the controller, and the bulldozer blade 12 begins to rise to avoid contact with the ground, ensuring the safe start of the ripper mechanism 20.

[0057] Under normal and safe startup, the servo motor 36 is controlled by the controller. The servo motor 36 is connected to the rotating roller 34 through the output shaft, so that the servo motor 36 drives the rotating roller 34 to rotate. The rotation of the rotating roller 34 drives the loosening cutter mechanism 40, the cutter angle arc sliding mechanism 50 and the loosening cutter mechanism 40 to rotate accordingly. The cutter teeth group 44 in the loosening cutter mechanism 40 quickly cuts into the soil under the action of the rotating roller, effectively breaking the compact structure of the soil, thereby loosening the soil. When the operator feels that the soil loosening has reached the target, he can send a stop signal through the controller. The servo motor 36 then stops working, the rotating roller 34 stops rotating, and the cutter teeth group 44 returns to the initial position, preparing for the subsequent leveling operation.

[0058] Mode 1: By precisely controlling the movement of the cylinder to adjust the angle and position of the cutting teeth, the soil loosening effect is optimized. Activating the double-rod cylinder 71 causes the air rod to retract, bringing the adjacent sides of the two V-shaped plates 72 closer together. This causes displacement on the other side of the two V-shaped plates 72. When the V-shaped plates 72 approach each other, the force is transmitted to the fixed cutting tooth frame 42 through the two connected side-bending fixing rods 74, causing one side to move synchronously. This ensures the stability of the cutting tooth frame 42 and limits its displacement angle, preventing a decrease in cutting efficiency due to instability. It also drives the corresponding outer sliding bolt 54 and inner sliding bolt 55 to slide within the outer large arc sliding groove 52 and inner small arc sliding groove 53, stabilizing the position of the cutting tooth frame 42 and limiting its displacement angle, ensuring the accuracy of the cutting tooth frame 42 during the soil loosening process. The positioning is determined so that it can effectively apply force when in contact with the soil, thereby causing the correspondingly installed blade mounting plate 43 and blade assembly 44 to move synchronously, causing adjacent blade assemblies 44 to move. When performing the soil loosening task, the adjacent blades of the blade assembly 44 can form a coordinated cutting angle according to the degree of contraction of the double-rod cylinder 71. The coordinated working mode can ensure that the blades operate at the optimal angle when cutting into the soil, improving the efficiency of soil loosening. In addition, the synchronous displacement of the blade assembly 44 helps to loosen the soil evenly, avoiding soil structure damage caused by excessive local loosening, and ensuring the integrity and stability of the soil during the leveling process. By controlling the action of the double-rod cylinder 71, the operator can flexibly adjust the cutting angle of the blades according to different soil conditions and operation requirements, achieving efficient treatment of various terrains and soil types.

[0059] Mode Two: Building upon Mode One or normal startup, Mode Two can further optimize the operation. By controlling the stepper motor 61, the blade teeth converge and the soil loosening density increases. When the operator decides to use Mode Two, they start the stepper motor 61, which drives the connected lead screw 63 to rotate. This causes the three ball nuts to pull the corresponding three support plates 51 towards one side. As the support plates 51 converge, the loosening blade tooth mechanism 40 moves to one side, reducing the diameter range of the loosened soil. This improves the efficiency of the loosening operation, making the blade teeth... Group 44 plays a greater role in a relatively small area. Although the diameter of the loosened soil is reduced, the tooth group 44 increases the force applied to the soil during the gathering process, which significantly increases the density of the loosened soil within the loosened soil range. It can effectively break through the compacted structure of the soil and make the soil easier for subsequent leveling operations. It is especially suitable for compacted soil and can achieve a deeper loosening effect. However, after increasing the density of the loosened soil within the loosened soil range, the reverse drive stepper motor 61 can be used to control it to reset, or the reverse drive can continue to make the loosening tooth mechanism 40 move to the other side.

[0060] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A ripper for a land grading bulldozer characterized by, The utility model relates to a kind of soil loosening mechanism and soil pushing mechanism, including: Pushing mechanism (10), the rear side of pushing mechanism (10) is installed with ripper mechanism (20); Ripper mechanism (20) includes support connecting mechanism (30) and three groups of multi-section linear drive mechanism (60) and blade angle drive mechanism (70); Support connecting mechanism (30) includes rotating stick (34), and three groups of multi-section linear drive mechanism (60) are circularly symmetrical and installed on the outer wall of rotating stick (34); Three groups of multi-section linear drive mechanism (60) are installed with three groups of ripper blade mechanism (40), three blade angle arc sliding mechanisms (50) and three blade angle drive mechanisms (70); Three groups of ripper blade mechanism (40) include cross brace tube (41), two blade tube racks (42), two blade mounting plates (43), blade group (44) and flexible connecting plate (45); Two blade tube racks (42) are fixedly installed with two blade mounting plates (43) adjacent side, and blade group (44) is bolted to the other side of two blade mounting plates (43) respectively, and cross brace tube (41) is fixedly connected with corresponding blade mounting plate (43) by multiple flexible connecting plates (45) respectively; Three blade angle arc sliding mechanisms (50) include support plate (51), outer large arc sliding groove (52), inner small arc sliding groove (53), outer sliding rod bolt (54) and inner sliding rod bolt (55); The top of outer sliding rod bolt (54) and inner sliding rod bolt (55) is bolted to the bottom of two blade tube racks (42) respectively, and outer large arc sliding groove (52) and inner small arc sliding groove (53) are respectively arranged on the top of support plate (51) in parallel, outer sliding rod bolt (54) is embedded and slidably connected in the inner of outer large arc sliding groove (52), and inner sliding rod bolt (55) is embedded and slidably connected in the inner of inner small arc sliding groove (53); Multi-section linear drive mechanism (60) includes three ball nuts (64), three limit sliding seats (65) and two limit sliding rods (66); The top of three ball nuts (64) is screw-connected to the bottom of corresponding support plate (51) of three blade angle arc sliding mechanisms (50) respectively, and three limit sliding seats (65) and two limit sliding rods (66) are arranged on the both sides of ball nut (64) and screw-connected to support plate (51); Blade angle drive mechanism (70) includes double-rod cylinder (71), V-shaped plate (72), mounting seat (73) and two side-bending type fixed rods (74); The both sides of double-rod cylinder (71) are bolt-connected to one side of two V-shaped plates (72), and the top of the other side of two V-shaped plates (72) is fixedly connected with the top of two side-bending type fixed rods (74), and the other end of two side-bending type fixed rods (74) is fixedly connected with the rear side of blade mounting plate (43) respectively, and mounting seat (73) is bolted to cross brace tube (41).

2. The ripper of a land grading bulldozer according to claim 1, wherein Pushing mechanism (10) includes pushing vehicle (11), pushing shovel (12) and lifting type mechanical arm (13), and pushing shovel (12) is installed on the front side of pushing vehicle (11), and lifting type mechanical arm (13) is fixedly bolted to the rear side of pushing vehicle (11).

3. The ripper of a land leveler according to claim 1, wherein The support connecting mechanism (30) comprises a tripod (31), a back-shaped frame (32), two side support frames (33), a rotating stick (34), two bearing seats (35), a servo motor (36) and a moving tire (37); The top side of the back-shaped frame (32) is welded with the bottom of the tripod (31), and the two side support frames (33) are bolted on the two sides of the back-shaped frame (32), and the two side support frames (33) are rotatably connected with the two ends of the rotating stick (34) through the two bearing seats (35).

4. The ripper of a land leveler according to claim 3, wherein The support connecting mechanism (30) further comprises a servo motor (36) and a moving tire (37), the servo motor (36) is installed on one side support frame (33), and the output shaft end of the servo motor (36) is fixedly connected with one end of the rotating stick (34), and the outer side of the two side support frames (33) is provided with the moving tire (37).

5. The ripper of a land leveler according to claim 1, wherein The multi-section linear driving mechanism (60) further comprises a stepping motor (61), two fixed plates (62) and a lead screw (63); The two fixed plates (62) are rotatably connected with the two ends of the lead screw (63) through bearings on the adjacent sides, and one side of the stepping motor (61) is installed on the outer side of one fixed plate (62), and the output shaft of the stepping motor (61) is fixedly connected with one end of the lead screw (63), and the ball nut (64) is installed on the outer side of the lead screw (63).

6. The ripper of a land leveler according to claim 5, wherein The two limiting slide rods (66) are fixedly welded between the two fixed plates (62) and located on the two sides of the lead screw (63).

7. The ripper of a land leveler according to claim 1, wherein One side of the mounting seat (73) is fixedly connected with a middle-bent fixed rod (75), and the other end of the middle-bent fixed rod (75) is screw-connected with the outer side wall of the double-rod air cylinder (71).

8. The ripper of a land leveler according to claim 1, wherein The bulldozer (11) is provided with a controller, the controller is electrically connected with the double-rod air cylinder (71), the stepping motor (61) and the servo motor (36), and the controller is used for controlling the start, stop and angle adjustment of the electrical equipment in the ripper mechanism (20).

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