Scarifier of bulldozer for land leveling engineering

Abstract

The scarifier of the bulldozer for land leveling engineering comprises a bulldozing mechanism, and a scarifier mechanism is installed on the rear side of the bulldozing mechanism; the scarifier mechanism comprises a bracket connecting mechanism, three groups of multi-section linear driving mechanisms and three groups of cutter tooth angle driving mechanisms; the support connecting mechanism comprises a rotating stick, and the three sets of multi-section linear driving mechanisms are circularly and symmetrically installed on the outer wall of the rotating stick. And three groups of soil loosening cutter tooth mechanisms, three cutter tooth angle arc sliding mechanisms and three cutter tooth angle driving mechanisms are mounted on the three groups of multi-section linear driving mechanisms. According to the scarifier, the multi-section linear driving mechanism is adopted, the angle and the cut-in depth of the cutter teeth can be flexibly adjusted through control of the servo motor and the air cylinder, and when the adjacent cutter teeth of the cutter tooth set execute the scarification task, a coordinated cut-in angle is formed according to the contraction degree of the double-rod air cylinder, so that the scarification efficiency is improved. The coordination working mode can ensure that the cutter teeth work at the best angle when cutting into the soil, and the soil loosening efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of land operation machinery, in particular to a soil ripper of a bulldozer used in land leveling engineering. Background Art

[0002] Land leveling is an indispensable part of agriculture, construction and infrastructure construction. Especially in the agricultural field, good land leveling is directly related to the growth and yield of crops. As the main construction machinery, bulldozers play a vital role in this process. They are not only responsible for the movement and leveling of soil, but also play a key role in the loosening and redistribution of soil, ensuring that the land is suitable for cultivation and vegetation growth;

[0003] The blade angle and cutting depth of most traditional scarifiers are fixed and cannot be flexibly adjusted according to different soil types (such as sand, clay, rocky soil, etc.) or construction requirements, resulting in poor scarification effect when facing hard or dense soil, which increases the difficulty of subsequent construction. At the same time, when leveling a large area of ​​land, traditional scarifiers often need multiple passes to achieve the ideal scarification effect, wasting time and energy;

[0004] Based on this, a soil ripper for a bulldozer for land leveling engineering is needed. Summary of the invention

[0005] To achieve the above object, the present invention provides the following solution: a soil ripper for a bulldozer for land leveling engineering, comprising:

[0006] A bulldozer mechanism, a ripper mechanism is installed at the rear side of the bulldozer mechanism;

[0007] The scarifier mechanism includes a bracket connection mechanism and three sets of multi-segment linear drive mechanisms and a knife tooth angle drive mechanism;

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

[0009] Three sets of soil loosening blade tooth mechanisms, three blade tooth angle arc sliding mechanisms and three blade tooth angle driving mechanisms are installed on the three sets of multi-stage linear driving mechanisms;

[0010] The three sets of loosening blade tooth mechanisms all include a cross brace pipe, two blade tooth pipe racks, two blade tooth mounting plates, a blade tooth group and a flexible connecting plate;

[0011] Two blade tooth pipe racks are fixedly installed on the adjacent side of the two blade tooth mounting plates, the blade tooth groups are bolted to the other side of the two blade tooth mounting plates, and the cross bracing pipes are fixedly connected to the corresponding blade tooth mounting plates through a plurality of flexible connecting plates;

[0012] The three blade angle arc sliding mechanisms each include 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 rod bolts and the inner slide rod bolts are bolted to the bottoms of the two knife tooth pipe frames, the outer large arc slide groove and the inner small arc slide groove are respectively arranged in parallel on the top of the support plate, the outer slide rod bolt is embedded in and slidably connected to the inside of the outer large arc slide groove, and the inner slide rod bolt is embedded in and slidably connected to the inside of the inner small arc slide groove;

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

[0015] The tops of the three ball nuts are respectively screwed to the bottoms of the corresponding support plates of the three blade angle arc sliding mechanisms, and three limiting slide seats and two limiting slide rods are arranged on both sides of the ball nuts and are screwed to the support plates.

[0016] The knife tooth angle driving mechanism comprises a double-rod cylinder, a V-shaped plate, a mounting seat and two side-bending fixing rods;

[0017] The air rod ends on both sides of the double-rod cylinder are bolted to one side of the two V-shaped plates, the top of the other side of the two V-shaped plates is fixedly connected to the top of the two side-bending fixing rods, the other ends of the two side-bending fixing rods are respectively fixedly connected to the rear side of the knife tooth mounting plates, and the mounting seat bolts are installed on the cross bracing tube.

[0018] Further preferably, the bulldozer mechanism includes a bulldozer, a bulldozer blade and a lifting mechanical arm, the bulldozer blade is installed on the front side of the bulldozer, and the lifting mechanical arm fixing bolts are installed on the rear side of the bulldozer.

[0019] Further preferably, the support connection mechanism includes a tripod, a return frame, two side support frames, a rotating rod, two bearing seats, a servo motor and a mobile tire;

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

[0021] Further preferably, the bracket connection mechanism also includes a servo motor and a movable tire. The servo motor is installed on a side support frame, and the output shaft end of the servo motor is fixedly connected to one end of the rotating rod. The outer sides of the two side support frames are equipped with movable tires.

[0022] Further preferably, the multi-segment linear drive mechanism further includes a stepping motor, two fixing plates and a lead screw;

[0023] The adjacent sides of the two fixed plates are rotatably connected to the two ends of the screw rod through bearings. One side of the stepper motor is installed on the outside of a fixed plate. The output shaft of the stepper motor is fixedly connected to one end of the screw rod, and the ball nut is installed on the outside of the screw rod.

[0024] Further preferably, both ends of the two limit sliding rods are fixedly welded between the two fixing plates and are located on both sides of the screw rod.

[0025] Further preferably, a middle-bend fixing rod is fixedly connected to one side of the mounting seat, and the other end of the middle-bend fixing rod is screwed to the outer side wall of the double-rod cylinder.

[0026] Further preferably, a controller is installed in the bulldozer, the controller is electrically connected to the double-rod cylinder, the stepper motor and the servo motor, and the controller is used to control the start, stop and angle adjustment of the electrical equipment in the scarifier mechanism.

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

[0028] 1. The tiller of the present invention adopts a multi-stage linear drive mechanism, which can flexibly adjust the angle and cutting depth of the cutter teeth through the control of the servo motor and the cylinder. When the adjacent cutter teeth of the cutter tooth group perform the loosening task, they can form a coordinated cutting angle according to the contraction degree of the double-rod cylinder. The coordinated working mode can ensure that the cutter teeth operate at the best angle when cutting into the soil, thereby improving the efficiency of soil loosening, so that the tiller can be accurately adjusted according to different soil types and construction requirements, thereby significantly improving the loosening effect in hard or dense soil and reducing the difficulty of subsequent construction.

[0029] 2. This soil loosening tool integrates a multi-stage linear drive mechanism and cooperates with a stepper motor to realize the rapid retraction and expansion of the knife tooth mechanism after the knife teeth are adjusted or started normally. By controlling the stepper motor to drive the screw rod, the layout of the knife tooth group can be flexibly adjusted during the operation, the diameter of the loosened soil can be reduced, and the force applied to the soil can be enhanced, so that the density of the loosened soil within the loosening range is significantly increased, which 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 soils and can achieve a deeper loosening effect, thereby achieving a better loosening effect in one operation. The efficient operation mode reduces the need for multiple passes, significantly improves construction efficiency, saves time and energy, and thus reduces overall construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

[0033] Figure 3 It is a schematic diagram of the blade angle arc sliding mechanism and the multi-stage linear driving mechanism of the present invention;

[0034] Figure 4 It is a top view schematic diagram of the blade angle driving mechanism of the present invention;

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

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

[0037] Figure numerals: 10, bulldozer mechanism; 11, bulldozer; 12, bulldozer; 13, lifting mechanical arm; 20, tiller mechanism; 30, bracket connection mechanism; 31, tripod; 32, return frame; 33, side support frame; 34, rotating stick; 35, bearing seat; 36, servo motor; 37, mobile tire; 40, tiller tooth mechanism; 41, cross brace pipe; 42, tooth tube frame; 43, tooth mounting plate; 44, tooth assembly; 45, flexible connection plate; 50, tooth Tooth angle arc sliding mechanism; 51, support plate; 52, outer large arc slide groove; 53, inner small arc slide groove; 54, outer slide rod bolt; 55, inner slide rod bolt; 60, multi-stage linear drive mechanism; 61, stepper motor; 62, fixed plate; 63, lead screw; 64, ball nut; 65, limit slide seat; 66, limit slide rod; 70, knife tooth angle drive mechanism; 71, double-rod cylinder; 72, V-shaped plate; 73, mounting seat; 74, side bending type fixing rod; 75, middle bending type fixing rod. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is 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 of a bulldozer for land leveling engineering in this embodiment comprises: a bulldozer mechanism 10, a ripper mechanism 20 is installed at the rear side of the bulldozer mechanism 10;

[0042] The ripper mechanism 20 includes a bracket connection mechanism 30, three sets of multi-segment linear drive mechanisms 60 and a blade angle drive mechanism 70; the bracket connection mechanism 30 includes a rotating rod 34, and the three sets of multi-segment linear drive mechanisms 60 are circularly symmetrically mounted on the outer wall of the rotating rod 34; the three sets of multi-segment linear drive mechanisms 60 are each mounted with three sets of ripper blade mechanisms 40, three blade angle arc sliding mechanisms 50 and three blade angle drive mechanisms 70;

[0043] The three sets of loosening blade tooth mechanisms 40 each include a cross brace tube 41, two blade tooth tube racks 42, two blade tooth mounting plates 43, a blade tooth group 44 and a flexible connecting plate 45; the two blade tooth tube racks 42 are fixedly installed on one side adjacent to the two blade tooth mounting plates 43, the blade tooth groups 44 are bolted to the other side of the two blade tooth mounting plates 43, and the cross brace tube 41 is fixedly connected to the corresponding blade tooth mounting plates 43 through a plurality of flexible connecting plates 45;

[0044] The three blade angle arc sliding mechanisms 50 each include a support plate 51, an outer large arc slide groove 52, an inner small arc slide groove 53, an outer slide rod bolt 54 and an inner slide rod bolt 55; the tops of the outer slide rod bolt 54 and the inner slide rod bolt 55 are bolted to the bottoms of the two blade tooth pipe frames 42, respectively, the outer large arc slide groove 52 and the inner small arc slide groove 53 are respectively arranged in parallel on the top of the support plate 51, the outer slide rod bolt 54 is embedded and slidably connected to the inside of the outer large arc slide groove 52, and the inner slide rod bolt 55 is embedded and slidably connected to the inside of the inner small arc slide groove 53;

[0045] The scarifier adopts a multi-stage linear drive mechanism. Through the control of the servo motor and the cylinder, the angle and cutting depth of the cutter teeth can be flexibly adjusted. When performing the loosening task, the adjacent cutter teeth of the cutter tooth group can form a coordinated cutting angle according to the contraction degree of the double-rod cylinder. The coordinated working mode can ensure that the cutter teeth operate at the best angle when cutting into the soil, thereby improving the efficiency of soil loosening.

[0046] The multi-stage linear drive mechanism 60 includes three ball nuts 64, three limit slides 65 and two limit slides 66; the tops of the three ball nuts 64 are respectively screwed to the bottoms of the corresponding support plates 51 of the three blade angle arc slide mechanisms 50, and the three limit slides 65 and the two limit slides 66 are arranged on both sides of the ball nuts 64 and screwed to the support plate 51. The multi-stage linear drive mechanism 60 also includes a stepping motor 61, two fixing plates 62 and a screw 63;

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

[0048] The limiting slide seat 65 and the limiting slide rod 66 are arranged on both sides of the ball nut 64 to limit and guide the blade teeth to prevent excessive displacement during operation.

[0049] The blade angle driving mechanism 70 comprises a double-rod cylinder 71, a V-shaped plate 72, a mounting seat 73 and two side-bending fixing rods 74;

[0050] The ends of the air rods on both sides of the double-rod cylinder 71 are bolted to one side of the two V-shaped plates 72, and the top of the other side of the two V-shaped plates 72 is fixedly connected to the top of the two side-bending fixing rods 74. The other ends of the two side-bending fixing rods 74 are respectively fixedly connected to the rear side of the knife tooth mounting plate 43, and the mounting seat 73 is bolted to the cross brace tube 41.

[0051] The bulldozer 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 connecting mechanism 30 includes a tripod 31, a return frame 32, two side support frames 33, a rotating rod 34, two bearing seats 35, a servo motor 36 and a movable tire 37; the top side of the return frame 32 is welded to the bottom of the tripod 31, and the two side support frames 33 are bolted to the two sides of the return frame 32 respectively, and the two side support frames 33 are rotatably connected to the two ends of the rotating rod 34 through two bearing seats 35. The bracket connecting mechanism 30 also includes a servo motor 36 and a movable 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 to one end of the rotating rod 34. The outer sides of the two side support frames 33 are both installed with movable tires 37.

[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 return frame 32 is welded to the tripod 31 to form a solid support structure that can effectively withstand the force and vibration generated during operation. The mobile 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 middle-bend fixing rod 75 is fixedly connected to one side of the mounting seat 73, and the other end of the middle-bend fixing rod 75 is screwed to the outer wall of the double-rod cylinder 71, thereby increasing the stabilization effect of the double-rod cylinder 71 through the middle-bend fixing rod 75.

[0055] Further preferably, a controller is installed in the bulldozer 11 , and the controller is electrically connected to the double-rod cylinder 71 , the stepper motor 61 and the servo motor 36 , and the controller is used to control the start, stop and angle adjustment of the electrical equipment in the scarifier mechanism 20 .

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

[0057] Under normal safety startup, the servo motor 36 is controlled by the controller, and the servo motor 36 is connected to the rotating rod 34 through the output shaft, so that the servo motor 36 drives the rotating rod 34 to rotate, and the rotation of the rotating rod 34 drives the loosening knife tooth mechanism 40, the knife tooth angle arc sliding mechanism 50 and the loosening knife tooth mechanism 40 and other mechanisms to rotate accordingly. The knife tooth group 44 in the loosening knife tooth mechanism 40 quickly cuts into the soil under the rotation of the rotating rod, effectively destroys the compact structure of the soil, thereby achieving soil loosening. When the operator feels that the soil loosening has reached the target, a stop signal can be sent through the controller, and the servo motor 36 stops working, the rotating rod 34 stops rotating, and the knife tooth group 44 returns to the initial position to prepare for the subsequent leveling operation;

[0058] Mode 1: The angle and position of the knife teeth are adjusted by precisely controlling the movement of the air cylinder, thereby optimizing the soil loosening effect. The double-rod air cylinder 71 is started to drive the air rod to contract, so that the adjacent sides of the two V-shaped plates 72 are close to each other, thereby causing the other sides of the two V-shaped plates 72 to be displaced. When the V-shaped plates 72 are close to each other, the force is transmitted to the fixed knife tooth pipe frame 42 through the two connected side bending fixing rods 74, so that one side of the knife tooth pipe frame moves synchronously, ensuring the stability of the knife tooth pipe frame 42 and limiting its displacement angle to avoid a decrease in cutting efficiency due to instability. The corresponding outer sliding rod bolts 54 and inner sliding rod bolts 55 are driven to slide inside the outer large arc slide groove 52 and the inner small arc slide groove 53, thereby stabilizing the position of the knife tooth pipe frame 42 and limiting its displacement angle, thereby ensuring the accuracy of the knife tooth pipe frame 42 during the loosening process. The blade teeth of the blade tooth group 44 are positioned so that they can effectively exert force when contacting the soil, thereby causing the correspondingly installed blade tooth mounting plates 43 and blade tooth groups 44 to produce synchronous displacement, causing the adjacent blade tooth groups 44 to produce displacement. When performing the soil loosening task, the adjacent blade teeth of the blade tooth group 44 can form a coordinated cutting angle according to the contraction degree of the double-rod cylinder 71. The coordinated working mode can ensure that the blade teeth operate at the best angle when cutting into the soil, thereby improving the efficiency of soil loosening. In addition, the synchronous displacement of the blade tooth group 44 helps to loosen the soil evenly, avoid soil structure damage caused by local excessive loosening, and ensure 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 blade teeth according to different soil conditions and operation requirements, thereby achieving efficient processing of various terrains and soil types.

[0059] Mode 2: Based on Mode 1 or normal start-up, Mode 2 can be used to further optimize the operation. The stepper motor 61 is controlled to gather the cutter teeth and increase the loose soil density. When the operator decides to use Mode 2 to operate, the stepper motor 61 is controlled to start, and the stepper motor 61 drives the screw rod 63 connected thereto to rotate, so that the three ball nuts drive the corresponding three support plates 51 to move closer to one side and converge. As the support plates 51 converge, the loosening cutter tooth mechanism 40 moves closer to one side, resulting in a reduction in the diameter range of the loose soil. The efficiency of the loosening operation is focused on, so that the cutter teeth are increased. Group 44 plays a greater role in a relatively small area. Although the diameter of the loosening soil is reduced, the tooth group 44 increases the force applied to the soil during the gathering process, so that the loosening density within the loosening range is significantly increased, which can effectively break through the compacted structure of the soil and make the soil easier to level subsequently. It is especially suitable for compacted soils and can achieve a deeper loosening effect. However, the loosening density within the loosening range is increased. After completion, the reverse drive stepper motor 61 can be used to control it to reset, or it can continue to reverse drive to make the loosening tooth mechanism 40 move to the other side.

[0060] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, 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 article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A soil ripper for a bulldozer used in land leveling engineering, characterized in that: include: A bulldozer mechanism (10), a ripper mechanism (20) being installed at the rear side of the bulldozer mechanism (10); The tiller mechanism (20) comprises a bracket connection mechanism (30), three sets of multi-segment linear drive mechanisms (60) and a blade angle drive mechanism (70); The support connection mechanism (30) comprises a rotating rod (34), and three sets of multi-segment linear drive mechanisms (60) are circularly symmetrically mounted on the outer wall of the rotating rod (34); Three sets of soil loosening blade tooth mechanisms (40), three blade tooth angle arc sliding mechanisms (50) and three blade tooth angle driving mechanisms (70) are installed on each of the three sets of multi-segment linear driving mechanisms (60); The three sets of soil loosening blade tooth mechanisms (40) each comprise a cross bracing pipe (41), two blade tooth pipe racks (42), two blade tooth mounting plates (43), a blade tooth group (44) and a flexible connecting plate (45); The two blade tooth pipe frames (42) are fixedly installed on one side adjacent to the two blade tooth mounting plates (43), the blade tooth groups (44) are bolted to the other side of the two blade tooth mounting plates (43), and the cross bracing pipes (41) are fixedly connected to the corresponding blade tooth mounting plates (43) through a plurality of flexible connecting plates (45); The three blade angle arc sliding mechanisms (50) each comprise 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 slide bolts (54) and the inner slide bolts (55) are bolted to the bottoms of the two knife tooth pipe frames (42), the outer large arc slide groove (52) and the inner small arc slide groove (53) are respectively arranged in parallel on the top of the support plate (51), the outer slide bolts (54) are embedded in and slidably connected to the inside of the outer large arc slide groove (52), and the inner slide bolts (55) are embedded in and slidably connected to the inside of the inner small arc slide groove (53); The multi-stage linear drive mechanism (60) comprises three ball nuts (64), three limiting slide seats (65) and two limiting slide rods (66); The tops of the three ball nuts (64) are respectively screwed to the bottoms of the corresponding support plates (51) of the three blade angle arc sliding mechanisms (50), and three limiting slide seats (65) and two limiting slide rods (66) are arranged on both sides of the ball nuts (64) and screwed to the support plates (51). The blade angle driving mechanism (70) comprises a double-rod cylinder (71), a V-shaped plate (72), a mounting seat (73) and two side-bending fixing rods (74); The ends of the gas rods on both sides 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 two side-bending fixing rods (74), the other ends of the two side-bending fixing rods (74) are respectively fixedly connected to the rear side of the knife tooth mounting plate (43), and the mounting seat (73) is bolted to the cross bracing tube (41).

2. A soil ripper for a bulldozer for land leveling engineering according to claim 1, characterized in that: The bulldozer mechanism (10) comprises 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 on the rear side of the bulldozer (11).

3. A soil ripper for a bulldozer for land leveling engineering according to claim 1, characterized in that: The support connection mechanism (30) comprises a tripod (31), a return frame (32), two side support frames (33), a rotating rod (34), two bearing seats (35), a servo motor (36) and a moving tire (37); The top side of the return frame (32) is welded to the bottom of the tripod (31), and two side support frames (33) are respectively bolted to the two sides of the return frame (32), and the two side support frames (33) are rotatably connected to the two ends of the rotating rod (34) through two bearing seats (35).

4. A soil ripper for a bulldozer for land leveling engineering according to claim 3, characterized in that: The support connection mechanism (30) further comprises a servo motor (36) and a movable tire (37). The servo motor (36) is mounted on a side support frame (33). The output shaft end of the servo motor (36) is fixedly connected to one end of the rotating rod (34). The outer sides of the two side support frames (33) are both equipped with movable tires (37).

5. A tiller for a bulldozer for land leveling engineering according to claim 1, characterized in that: The multi-segment linear drive mechanism (60) further comprises a stepping motor (61), two fixing plates (62) and a lead screw (63); The adjacent sides of the two fixed plates (62) are rotatably connected to the two ends of the screw rod (63) through bearings respectively. One side of the stepper motor (61) is installed on the outer side of one of the fixed plates (62). The output shaft of the stepper motor (61) is fixedly connected to one end of the screw rod (63). The ball nut (64) is installed on the outer side of the screw rod (63).

6. A tiller for a bulldozer for land leveling engineering according to claim 5, characterized in that: Both ends of the two limit sliding rods (66) are fixedly welded between the two fixing plates (62) and are located on both sides of the screw rod (63).

7. A soil ripper for a bulldozer for land leveling engineering according to claim 1, characterized in that: A middle-bend fixing rod (75) is fixedly connected to one side of the mounting seat (73), and the other end of the middle-bend fixing rod (75) is screwed to the outer side wall of the double-rod cylinder (71).

8. A tiller for a bulldozer for land leveling engineering according to claim 1, characterized in that: A controller is installed in the bulldozer (11), and the controller 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 scarifier mechanism (20).

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