Land leveling mechanism of a combined land preparation machine

Abstract

The present invention is applicable to the technical field of land preparation machines, and provides a combined land preparation machine land leveling mechanism, including: a top plate; a soil leveling component, which includes a soil leveling box, a plurality of top shafts are rotatably provided above the soil leveling box, and two movable seats are rotatably connected to the top plate through top connecting rods are provided on the top shafts; a soil filling component, which includes a stacked bottom conveyor belt and a top conveyor belt, a center shaft is rotatably provided at the top of one end of the soil leveling box, a sleeve shaft is rotatably provided on the center shaft, two active seats are provided on the sleeve shaft, and the inner driven seat and the outer driven seat are elastically connected on both sides of the active seat, a lifting plate is provided below the sleeve shaft, a bulldozer frame is slidably provided on the top surface of the lifting plate, a bottom connecting rod is rotatably provided between the inner driven seat and the bulldozer frame, and a horizontal connecting rod is rotatably provided between the outer driven seat and the side wall of the soil leveling box. By this, the present invention can not only adjust the height of the soil leveling box, but also collect the soil at the convex part of the ground and fill it into the concave part of the ground, thereby ensuring a good soil leveling effect and improving the stability of the operation of the land preparation machine.

Description

Technical Field

[0001] The invention relates to the technical field of land preparation machines, and in particular to a land leveling mechanism of a combined land preparation machine. Background Art

[0002] Land preparation machines are compound machines that are matched with large and medium-sized tractors. They can complete multiple operations such as stubble removal, rotary tillage, deep loosening, ridging, and compaction at one time, and have the characteristics of high operating efficiency. Due to the uneven surface of the fields, the existing land preparation machines often shake up and down during movement, resulting in inconsistent tillage depth, which affects crop cultivation.

[0003] In view of the above problems, technicians in this field have made improvements to the existing technology. For example, a tire leveling mechanism for a combined land leveling machine with publication number CN117204146A includes a combined land leveling machine and also includes a cylinder, a pull rod, a connecting rod and a trowel plate; the cylinder, the pull rod and the connecting rod are hingedly arranged under the frame of the combined land leveling machine, the cylinder is located between the pull rod and the connecting rod, the piston rod of the cylinder and the other end of the pull rod are hingedly arranged at the front of the trowel plate, and a V shape is formed between the two, the cylinder and the connecting rod have the same hinge point, and the other end of the connecting rod is hingedly arranged at the tail end of the trowel plate, which can level the raised parts of the ground through the trowel plate, but the trowel plate in the above-mentioned device is less effective in leveling the depressed parts of the ground, and it is still inconvenient to use.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0005] In view of the above-mentioned defects, the purpose of the present invention is to provide a land leveling mechanism of a combined land preparation machine, which can not only adjust the height of the soil leveling box, but also collect the soil from the convex parts of the ground and fill it into the concave parts of the ground, thereby ensuring a good soil leveling effect and improving the stability of the operation of the land preparation machine.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a land leveling mechanism of a combined land leveling machine, comprising: a top plate, which is installed on the land leveling machine; a soil leveling component, which comprises a soil leveling box and a top shaft, the soil leveling box is arranged below the top plate, and a plurality of top shafts are rotatably arranged above the soil leveling box, and two movable seats and two first circulation grooves are arranged on the top shafts, and a top connecting rod is rotatably arranged between the movable seat and the top plate; a soil filling component, which comprises a bottom conveyor belt and a top conveyor belt, the soil leveling box is provided with a stacked bottom conveyor belt and a top conveyor belt, one end of the soil leveling box is provided with a soil inlet, and the other end of the soil leveling box is provided with a soil inlet. A central axis is provided on the top, and a sleeve shaft is rotatably provided on the central axis. Two active seats and two second circulation grooves are provided on the sleeve shaft. The sides of the active seats close to each other are elastically connected to the inner driven seat, and a lifting plate is provided below the sleeve shaft. A bulldozer frame is slidably provided on the top surface of the lifting plate. A bottom connecting rod is rotatably provided between the inner driven seat and the bulldozer frame, and the sides of the active seats away from each other are elastically connected to the outer driven seat, and a horizontal connecting rod is rotatably provided between the outer driven seat and the side wall of the leveling box, and a filling cavity is provided at the end of the top of the leveling box away from the central axis, and an opening is provided at the bottom of the filling cavity.

[0007] According to the land leveling mechanism of the combined land preparation machine of the present invention, a stacked bottom cavity and a top cavity are provided in the soil leveling box, the bottom conveyor belt is provided at the bottom of the bottom cavity, and both ends of the bottom conveyor belt are provided with a bottom transmission shaft rotatably connected to the side wall of the bottom cavity, and the top conveyor belt is provided at the bottom of the top cavity, and both ends of the top conveyor belt are provided with a top transmission shaft rotatably connected to the side wall of the top cavity.

[0008] According to the land leveling mechanism of the combined land preparation machine of the present invention, both ends of the central axis are rotatably connected to the sliding seats, and the sliding seats are slidably connected to the inner side walls of the soil leveling box. One end of the central axis is connected to the driving member, and the driving member is arranged on the mounting seat. The mounting seat is slidably arranged on the outer side wall of the soil leveling box, and both side walls of the soil leveling box are provided with avoidance grooves that cooperate with the central axis.

[0009] According to the land leveling mechanism of the combined land preparation machine of the present invention, a first elastic member is provided between the adjacent active seat and the inner driven seat, a second elastic member is provided between the adjacent active seat and the outer driven seat, and a third elastic member is provided between the adjacent outer driven seat and the sliding seat.

[0010] According to the land leveling mechanism of the combined land preparation machine of the present invention, a positive ratchet is provided on the sleeve shaft, one end of the central shaft is rotatably connected to the second gear, a reverse ratchet is provided on the second gear, and a positive pawl and a reverse pawl are rotatably provided on the central shaft.

[0011] According to the land leveling mechanism of the combined land preparation machine of the present invention, a third gear is rotatably connected to the side wall of the leveling box at one end of the avoidance trough away from the soil inlet via a first connecting shaft, and a fifth gear is rotatably connected to the side wall of the leveling box at one end of the avoidance trough close to the soil inlet via a third connecting shaft. A first belt is provided between the first connecting shaft and the top transmission shaft, a first gear is provided on the top transmission shaft, a fourth gear is rotatably connected to the side wall of the leveling box via a second connecting shaft, a second belt is provided between the second connecting shaft and the bottom transmission shaft, and a third belt is provided between the third connecting shaft and a plurality of top shafts.

[0012] According to the land leveling mechanism of the combined land preparation machine of the present invention, a belt is provided on the outside of the leveling box at the filling cavity, a filling port is provided on the bottom surface of the belt, a side rotating shaft is rotatably provided above the belt, a side block and a third circulation groove are provided on the side rotating shaft, the side block is connected to the belt, and the side rotating shaft cooperates with the second belt.

[0013] According to the land leveling mechanism of the combined land preparation machine of the present invention, a corner plate is provided at the middle of one end of the bottom cavity close to the soil inlet.

[0014] According to the land leveling mechanism of the combined land preparation machine of the present invention, a limiting groove cooperating with the sleeve belt is provided on the side wall of the soil leveling box.

[0015] The object of the present invention is to provide a land leveling mechanism of a combined land preparation machine, which has the following beneficial effects:

[0016] 1. By setting up the soil leveling component, the ground can be leveled and the stability of the land preparation machine's movement can be improved, thereby ensuring approximately the same tillage depth, and the height of the soil leveling box can be adjusted, expanding the scope of use of the device.

[0017] 2. By setting up the soil filling component, the soil can be collected when the soil leveling box is leveling the convex parts of the ground, and the collected soil can be filled into the concave parts of the ground in front of the moving direction of the land leveling machine, thereby improving the land leveling effect.

[0018] 3. This device only needs one power source to drive, which reduces the manufacturing and use costs.

[0019] In summary, the beneficial effects of the present invention are: it can not only adjust the height of the soil leveling box, but also collect the soil from the convex parts of the ground and fill it into the concave parts of the ground, thereby ensuring a good soil leveling effect and improving the stability of the operation of the land preparation machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0021] Figure 2 yes Figure 1 A schematic diagram of the enlarged structure of part A;

[0022] Figure 3 is a top cross-sectional view of the present invention;

[0023] Figure 4 yes Figure 3 A schematic diagram of the enlarged structure of part B;

[0024] Figure 5 is a front cross-sectional view of the present invention;

[0025] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure of part C;

[0026] In the figure: 1-top plate, 2-soil leveling assembly, 21-soil leveling box, 22-top shaft, 23-moving seat, 24-top connecting rod, 25-angle plate, 26-baffle, 27-fifth gear, 3-filling assembly, 31-bottom conveyor belt, 311-bottom transmission shaft, 32-top conveyor belt, 321-top transmission shaft, 322-first gear, 33-lifting plate, 331-buzzer frame, 332-bottom connecting rod, 34-center shaft, 341-driving member, 342-second gear, 35-sleeve shaft, 351-active seat, 352-inner driven seat, 353-outer driven seat, 354-horizontal connecting rod, 36-third gear, 37-fourth gear, 38-sleeve belt, 39-side rotating shaft, 391-side block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] See also Figure 1 to Figure 6 The present invention provides a land leveling mechanism of a combined land leveling machine, comprising a top plate 1, a soil leveling component 2 and a soil filling component 3. The top plate 1 is installed on the land leveling machine, and the top plate 1 is located in front of the running direction of the tires of the land leveling machine. When the land leveling machine moves, the top plate 1, the soil leveling component 2 and the soil filling component 3 first level the ground, so that the ground contacted by the tires of the land leveling machine is always the leveled ground, which can improve the stability of the movement of the land leveling machine, thereby improving the consistency of the tillage depth.

[0029] See also Figure 1 to Figure 5The soil leveling assembly 2 includes a soil leveling box 21 and a top shaft 22. The soil leveling box 21 is arranged below the top plate 1. A plurality of top shafts 22 are rotatably arranged on the top surface of the soil leveling box 21. Both ends of the top shaft 22 are rotatably connected to the first convex plate. The first convex plate is fixedly connected to the top surface of the soil leveling box 21. Two moving seats 23 are arranged on the top shaft 22. The moving seats 23 are slidably connected to the top surface of the soil leveling box 21. First circulation grooves are arranged at both ends of the surface of the top shaft 22. The two first circulation grooves on the same top shaft 22 are in opposite directions. The two moving seats 23 are respectively connected to the two The first circulation groove cooperates (the moving seat 23 is provided with a first guide column that cooperates with the first circulation groove). When the top shaft 22 rotates, the two moving seats 23 on the same top shaft 22 move in opposite directions synchronously. A top connecting rod 24 is rotatably provided between the moving seat 23 and the top plate 1 (that is, one end of the top connecting rod 24 is rotatably connected to the top plate 1, and the other end of the top connecting rod 24 is rotatably connected to the moving seat 23). Under the action of the top connecting rod 24, the unidirectional rotation of the top shaft 22 can drive the soil leveling box 21 to reciprocate and rise and fall, thereby changing the soil leveling depth of the land leveling machine. A horizontal partition is provided inside the soil leveling box 21, and the partition divides the inside of the soil leveling box 21 into a stacked top cavity and a bottom cavity. The top cavity is located above the bottom cavity, and a soil inlet is provided at one end of the bottom cavity located in front of the moving direction of the land leveling machine. When the land leveling machine moves, the soil leveling box 21 pushes the convex part of the ground flat, and the soil enters the bottom cavity at the soil inlet. A connecting cavity is provided at one end of the soil leveling box 21 away from the soil inlet, and the connecting cavity is used to connect the bottom cavity and the top cavity.

[0030] See also Figure 1 to Figure 6 The filling component 3 includes a bottom conveyor belt 31 and a top conveyor belt 32. The bottom conveyor belt 31 is arranged at the bottom of the bottom cavity. The bottom surface of the bottom cavity is provided with a bottom groove that matches the bottom conveyor belt 31. Both ends of the bottom conveyor belt 31 are provided with a bottom transmission shaft 311. Both ends of the bottom transmission shaft 311 are respectively rotatably connected to the two side walls of the bottom cavity. The bottom conveyor belt 31 can transport the soil entering the bottom cavity to the connecting cavity. The top conveyor belt 32 is arranged at the bottom of the top cavity. The bottom surface of the top cavity is provided with a top groove that matches the top conveyor belt 32. Both ends of the top conveyor belt 32 are rotatably provided with a top transmission shaft 321. Both ends of the top transmission shaft 321 are respectively rotatably connected to the two side walls of the top cavity. A lifting plate 33 is provided at the bottom of the connecting cavity, and the lifting plate 33 is slidably connected to the side wall of the connecting cavity. A bulldozer frame 331 is slidably provided on the top surface of the lifting plate 33. An opening is provided at one end of the bulldozer frame 331 close to the bottom conveyor belt 31. A central shaft 34 is rotatably provided above the lifting plate 33. The central shaft 34 is arranged at the top of the connecting cavity. Both ends of the central shaft 34 are rotatably connected to the sliding seat, and the sliding seat is slidably connected to the inner side wall of the connecting cavity. One end of the central shaft 34 passes through the sliding seat and the side wall of the flat soil box 21 and is connected to the driving member 341. The driving member 341 is arranged on the mounting seat, and the mounting seat is slidably connected to the outer side wall of the flat soil box 21. The driving member 341 can drive the central shaft 34 to rotate reciprocatingly.

[0031] See also Figure 1 to Figure 6, a sleeve shaft 35 is rotatably provided on the central shaft 34, a positive ratchet is provided on the sleeve shaft 35, a positive pawl that can rotate in one direction is rotatably provided on the central shaft 34, the central shaft 34, the sleeve shaft 35 and the positive ratchet are concentric, when the central shaft 34 rotates forward, the positive ratchet cooperates with the positive pawl, and the central shaft 34 can drive the sleeve shaft 35 to rotate. Two active seats 351 are provided on the sleeve shaft 35, and second circulation grooves are provided at both ends of the surface of the sleeve shaft 35, and the two second circulation grooves are in opposite directions, and the two active seats 351 cooperate with the two second circulation grooves respectively (the cooperation method thereof refers to the moving seat 23 and the first circulation groove). The inner driven seat 352 is provided on the side where the active seats 351 are close to each other, and a first elastic member is provided between the adjacent active seats 351 and the inner driven seat 352 (that is, the two ends of the first elastic member are respectively connected to the active seat 351 and the inner driven seat 352), and a bottom connecting rod 332 is rotatably provided between the inner driven seat 352 and the bulldozer frame 331 (that is, one end of the bottom connecting rod 332 is rotatably connected to the inner driven seat 352, and the other end of the bottom connecting rod 332 is rotatably connected to the bulldozer frame 331). Under the action of the bottom connecting rod 332, when the active seat 35 When the inner driven seats 352 are driven to move closer to (or farther from) each other, the bulldozer frame 331 can drive the lifting plate 33 to rise (or fall). A baffle plate 26 that can cooperate with the lifting plate 33 is provided on the top of the communicating cavity. When the lifting plate 33 is located at the lowest point of its motion range, the top surface height of the lifting plate 33 is slightly lower than the top surface height of the bottom conveyor belt 31. When the lifting plate 33 is located at the highest point of its motion range (i.e., the top surface of the lifting plate 33 abuts against the bottom surface of the baffle plate 26), the top surface height of the lifting plate 33 is slightly higher than the top surface height of the top conveyor belt 32. An outer driven seat 353 is provided on the side away from each other of the active seats 351, a second elastic member is provided between the adjacent active seats 351 and the outer driven seats 353 (that is, the two ends of the second elastic member are respectively connected to the active seat 351 and the outer driven seat 353), and a third elastic member is provided between the adjacent outer driven seats 353 and the sliding seat, and a horizontal connecting rod 354 is rotatably provided between the outer driven seat 353 and the adjacent top cavity side wall (that is, one end of the horizontal connecting rod 354 is rotatably connected to the outer driven seat 353, and the other end of the horizontal connecting rod 354 is rotatably connected to the top cavity side wall). When the active seat 351 drives the outer driven seat 353 to approach each other, under the action of the horizontal connecting rod 354, the central shaft 34, the sleeve shaft 35 and the bulldozer frame 331 can move in the direction close to the top conveyor belt 32, thereby pushing the soil temporarily stored on the lifting plate 33 to the top conveyor belt 32.

[0032] See also Figure 1 to Figure 6, both ends of the central shaft 34 pass through the soil leveling box 21, and the side walls of the soil leveling box 21 are provided with avoidance grooves that cooperate with the central shaft 34. The end of the central shaft 34 away from the driving member 341 is rotatably connected to the second gear 342, and the second gear 342 is located outside the soil leveling box 21. The second gear 342 is provided with a counter ratchet, and the central shaft 34 is rotatably connected to the counter ratchet that can rotate in one direction. The central shaft 34, the second gear 342 and the counter ratchet are concentric. The side wall of the soil leveling box 21 at the end of the avoidance groove away from the soil inlet is rotatably provided with a third gear 36 that meshes with the second gear 342. The third gear 36 is rotatably connected to the side wall of the soil leveling box 21 through the first connecting shaft. A first belt is provided between the first connecting shaft and the top transmission shaft 321. When the central shaft 34 is located at the end of the avoidance groove away from the soil inlet, the third gear 36 meshes with the second gear 342. At this time, the reverse rotation of the driving member 341 can drive the top transmission shaft 321 to rotate. One end of the top transmission shaft 321 passes through the soil leveling box 21 and is connected to the first gear 322. The fourth gear 37 is meshed and connected below the first gear 322. The fourth gear 37 is rotatably connected to the side wall of the soil leveling box 21 through the second connecting shaft. A second belt is provided between the second connecting shaft and the bottom transmission shaft 311. When the top transmission shaft 321 rotates, it can drive the bottom transmission shaft 311 to rotate in the opposite direction, so that the top conveyor belt 32 and the bottom conveyor belt 31 run in opposite directions. A fifth gear 27 is rotatably provided on the side wall of the soil leveling box 21 at one end of the avoidance slot near the soil inlet. The fifth gear 27 is rotatably connected to the side wall of the soil leveling box 21 through the third connecting shaft. A third belt is provided between the third connecting shaft and several top shafts 22. When the central shaft 34 is located at one end of the avoidance slot near the soil inlet, the second gear 342 meshes with the fifth gear 27, and the reverse rotation of the driving member 341 can drive several top shafts 22 to rotate synchronously.

[0033] See also Figure 1 to Figure 6 Preferably, a corner plate 25 is provided in the middle of one end of the bottom cavity near the soil inlet, and the corner plate 25 is triangular in shape, which can play the role of breaking and dividing the soil, thereby reducing the resistance encountered by the land preparation machine during movement.

[0034] See also Figure 1 to Figure 6 Preferably, a soil filling cavity is provided at one end of the top cavity away from the connecting cavity, and the soil filling cavity is located on the side of the corner plate 25 away from the bottom cavity. An opening is provided at the bottom of the soil filling cavity, and a sleeve belt 38 is provided on the outer cover of the soil leveling box 21 at the soil filling cavity, and a soil filling port is provided on the bottom surface of the sleeve belt 38. When the soil in the top cavity is transported to the soil filling cavity via the top conveyor belt 32, it falls at the soil filling port. A side shaft 39 is rotatably provided above the soil filling cavity, and both ends of the side shaft 39 are rotatably connected to the second convex plate, and the second convex plate is fixedly connected to the top surface of the soil leveling box 21. A side block 391 connected to the sleeve belt 38 is provided on the side shaft 39, and a third circulation groove is provided on the surface of the side shaft 39 to cooperate with the side block 391 (the cooperation method thereof refers to the moving seat 23 and the first circulation groove), and one end of the side shaft 39 passes through the second convex plate and cooperates with the second belt.

[0035] See also Figure 1 to Figure 6 Preferably, a plurality of first limit rods passing through the active seat 351, the inner driven seat 352 and the outer driven seat 353 are provided between the two sliding seats, and the first limit rods can prevent the active seat 351 from rotating and provide support for the inner driven seat 352 and the outer driven seat 353. A plurality of second limit rods passing through the side block 391 are provided between the two second convex plates, and the second limit rods can prevent the side block 391 from rotating.

[0036] See also Figure 1 to Figure 6 Preferably, a limiting groove that can cooperate with the sleeve belt 38 is provided on the outer side wall of the leveling box 21 at the soil filling cavity, so as to prevent the sleeve belt 38 from being misplaced during the movement.

[0037] See also Figure 1 to Figure 6 Preferably, the first elastic member, the second elastic member and the third elastic member are all springs, and the elastic coefficient of the third elastic member is much larger than the elastic coefficient of the second elastic member, and the elastic coefficient of the second elastic member is much larger than the elastic coefficient of the first elastic member.

[0038] See also Figure 1 to Figure 6 Preferably, an opening is provided at the bottom of the communicating cavity to prevent soil from accumulating at the bottom of the communicating cavity and causing the device to be unable to operate normally.

[0039] See also Figure 1 to Figure 6 Preferably, the driving member 341 is a rotating motor that can provide sufficient power.

[0040] During the implementation of the present invention: when land leveling operations are required, the user first drives the land leveling machine to a suitable position. At this time, the device is in an initial state (i.e., the center axis 34 is located at one end of the avoidance groove close to the soil inlet), and the second gear 342 is engaged with the fifth gear 27. At this time, the driving member 341 reverses, the positive ratchet does not cooperate with the positive pawl, the reverse ratchet cooperates with the reverse pawl, the sleeve shaft 35 does not rotate, and the second gear 342 rotates. The second gear 342 drives the plurality of top shafts 22 to rotate, so that the two movable seats 23 on the same top shaft 22 are close to (or away from) each other, thereby adjusting the height of the leveling box 21. When the height adjustment of the leveling box 21 is completed, the driving member 341 reverses, at this time the positive ratchet cooperates with the positive pawl, the reverse ratchet does not cooperate with the reverse pawl, the second gear 342 does not rotate, the sleeve shaft 35 rotates, and the two active seats 351 move away from each other (at this time the first elastic member is in a compressed state, and the second elastic member and the third elastic member are both in an extended state). Since the elastic coefficient of the third elastic member is much larger than the elastic coefficient of the second elastic member, and the elastic coefficient of the second elastic member is much larger than the elastic coefficient of the first elastic member, during the process of the two active seats 351 moving away from each other and resetting, the third elastic member first restores its deformation, and under the action of the horizontal connecting rod 354, the central shaft 34, the sleeve shaft 35 and the bulldozer frame 331 translate to the top of the connecting cavity, and then the two active seats 351 continue to move away from each other, and after the second elastic member restores its deformation, the first elastic member restores its deformation again (in this process The bottom surface of the middle bulldozer frame 331 abuts against the top surface of the top conveyor belt 32. Under the support of the top conveyor belt 32, the horizontal heights of the lifting plate 33 and the bulldozer frame 331 will not change). When the bulldozer frame 331 is reset, the two active seats 351 drive the two inner driven seats 352 to approach each other, so that the bulldozer frame 331 drives the lifting plate 33 to descend until the lifting plate 33 is at the lowest point of its motion range. At this time, the central axis 34 is located at the end of the avoidance groove away from the soil inlet, and the second gear 342 is meshed and connected to the third gear 36. Then the land leveling machine moves, and the leveling box 21 levels the ground. When the soil enters the bottom cavity at the soil inlet, the driving member 341 reverses, thereby causing the bottom conveyor belt 31 and the top conveyor belt 32 to operate. The bottom conveyor belt 31 transports the soil entering the bottom cavity to the connecting cavity, and the top conveyor belt 32 runs the soil entering the top cavity to the filling cavity.Under the action of the bottom conveyor belt 31, the soil entering the bottom cavity is collected on the lifting plate 33. When the soil on the lifting plate 33 reaches a certain volume, the driving member 341 rotates forward, and the two active seats 351 approach each other. The active seat 351 first drives the two inner driven seats 352 to move. At this time, the second elastic member is stretched, and the first elastic member and the third elastic member do not deform (or the deformation degree is small and can be ignored). When the lifting plate 33 abuts the baffle 26, the two active seats 351 continue to approach each other. At this time, the positions of the two inner driven seats 352 no longer change, the first elastic member is compressed, and the second elastic member 351 is compressed. When the third elastic member is stretched (the user can also add a number of telescopic shafts between the adjacent active seats 351 and the outer driven seats 353. When the lifting plate 33 abuts the baffle 26, the telescopic shafts are extended to the limit length), the active seat 351 drives the two outer driven seats 353 to approach each other, and under the action of the horizontal connecting rod 354, the bulldozer frame 331 pushes the soil on the lifting plate 33 to the top conveyor belt 32 (during the lifting of the lifting plate 33, the top conveyor belt 32 and the bottom conveyor belt 31 are not running, and the soil entering the bottom cavity is accumulated on the top surface of the bottom conveyor belt 31. The user can also choose to stop and wait). When the top conveyor belt 32 is running, the soil in the top cavity is transported to the filling cavity. At this time, the side shaft 39 rotates, and under the action of the third circulation groove, the side block 391 drives the sleeve belt 38 to reciprocate, thereby achieving uniform filling.

[0041] The present invention provides a land leveling mechanism of a combined land preparation machine, which has the following beneficial effects:

[0042] 1. By setting up the soil leveling component, the ground can be leveled and the stability of the land preparation machine's movement can be improved, thereby ensuring approximately the same tillage depth, and the height of the soil leveling box can be adjusted, expanding the scope of use of the device.

[0043] 2. By setting up the soil filling component, the soil can be collected when the soil leveling box is leveling the convex parts of the ground, and the collected soil can be filled into the concave parts of the ground in front of the moving direction of the land leveling machine, thereby improving the land leveling effect.

[0044] 3. This device only needs one power source to drive, which reduces the manufacturing and use costs.

[0045] In summary, the beneficial effects of the present invention are: it can not only adjust the height of the soil leveling box, but also collect the soil from the convex parts of the ground and fill it into the concave parts of the ground, thereby ensuring a good soil leveling effect and improving the stability of the operation of the land preparation machine.

[0046] Of course, the present invention may have a variety of embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A land leveling mechanism of a combined land preparation machine, characterized in that: include: A top plate, which is mounted on the land preparation machine; A soil leveling assembly includes a soil leveling box and a top shaft, wherein the soil leveling box is arranged below the top plate, and a plurality of top shafts are rotatably arranged above the soil leveling box, and two moving seats and two first circulation grooves are arranged on the top shafts, and a top connecting rod is rotatably arranged between the moving seat and the top plate; A soil filling assembly comprises a bottom conveyor belt and a top conveyor belt, wherein the soil leveling box is provided with a stacked bottom conveyor belt and a top conveyor belt, one end of the soil leveling box is provided with a soil inlet, and the other end of the soil leveling box is provided with a central shaft, a sleeve shaft is rotatably provided on the central shaft, two active seats and two second circulation grooves are provided on the sleeve shaft, the sides of the active seats close to each other are elastically connected to the inner driven seat, a lifting plate is provided below the sleeve shaft, a bulldozer frame is slidably provided on the top surface of the lifting plate, a bottom connecting rod is rotatably provided between the inner driven seat and the bulldozer frame, the sides of the active seats away from each other are elastically connected to the outer driven seat, a horizontal connecting rod is rotatably provided between the outer driven seat and the side wall of the soil leveling box, a soil filling cavity is provided at the end of the top of the soil leveling box away from the central shaft, and an opening is provided at the bottom of the soil filling cavity; The soil leveling box is provided with a bottom cavity and a top cavity stacked in a stacked manner, the bottom conveyor belt is provided at the bottom of the bottom cavity, and both ends of the bottom conveyor belt are provided with a bottom transmission shaft rotatably connected to the side wall of the bottom cavity, and the top conveyor belt is provided at the bottom of the top cavity, and both ends of the top conveyor belt are provided with a top transmission shaft rotatably connected to the side wall of the top cavity; Both ends of the central axis are rotatably connected to the sliding seats, and the sliding seats are slidably connected to the inner side walls of the leveling box. One end of the central axis is connected to the driving member, and the driving member is arranged on the mounting seat. The mounting seat is slidably arranged on the outer side wall of the leveling box. The side walls of the leveling box are provided with avoidance grooves matching the central axis. A first elastic member is provided between the adjacent active seat and the inner driven seat, a second elastic member is provided between the adjacent active seat and the outer driven seat, and a third elastic member is provided between the adjacent outer driven seat and the sliding seat; The sleeve shaft is provided with a positive ratchet, one end of the central shaft is rotatably connected to the second gear, the second gear is provided with a reverse ratchet, and the central shaft is rotatably provided with a positive pawl and a reverse pawl.

2. The land leveling mechanism of the combined land preparation machine according to claim 1, characterized in that: A third gear is rotatably connected to the side wall of the flat soil box at one end of the avoidance trough away from the soil inlet via a first connecting shaft, and a fifth gear is rotatably connected to the side wall of the flat soil box at one end of the avoidance trough close to the soil inlet via a third connecting shaft. A first belt is provided between the first connecting shaft and the top transmission shaft, and a first gear is provided on the top transmission shaft. A fourth gear is rotatably connected to the side wall of the flat soil box via a second connecting shaft, a second belt is provided between the second connecting shaft and the bottom transmission shaft, and a third belt is provided between the third connecting shaft and a plurality of top shafts.

3. The land leveling mechanism of the combined land preparation machine according to claim 2, characterized in that: A belt is sleeved on the outside of the soil leveling box at the soil filling cavity, a soil filling port is provided on the bottom of the belt, a side shaft is rotatably provided above the belt, a side block and a third circulation groove are provided on the side shaft, the side block is connected to the belt, and the side shaft cooperates with the second belt.

4. The land leveling mechanism of the combined land preparation machine according to claim 1, characterized in that: A corner plate is provided at the middle of one end of the bottom cavity close to the soil inlet.

5. The land leveling mechanism of the combined land preparation machine according to claim 3, characterized in that: The side wall of the soil leveling box is provided with a limiting groove matched with the sleeve belt.

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