Land reclamation and improvement loosening device

Abstract

This invention belongs to the field of soil loosening technology, specifically a soil improvement and loosening device, comprising: a vehicle body, a shovel mounting frame, a torque limiter, a reset power mechanism, a torque detector, and an adjustment controller; a height-adjustable deep tillage support and a rotary tillage support are installed on the underside of the vehicle body's floor plate; a centering shaft is installed on the underside of the deep tillage support; a rotary tillage blade and a rotary tillage motor for driving the rotary tillage blade are rotatably connected to the underside of the rotary tillage support; the shovel mounting frame is sleeved on the outside of the centering shaft; two deep loosening shovels are connected to the outside of the shovel mounting frame, and the number of deep loosening shovels is symmetrical about the center of the shovel mounting frame; this device uses a torque detector to detect the pressure on a single deep loosening shovel. When there are many grass roots and straw roots on the deep loosening shovel, the deep loosening shovel can be replaced by rotating the shovel mounting frame, thereby avoiding excessive stress and deformation of the deep loosening shovel.

Description

Technical Field

[0001] This invention relates to the field of soil loosening technology, specifically to a soil improvement and loosening device. Background Technology

[0002] Land improvement and land consolidation methods include deep tillage and chemical treatment, primarily used to improve undesirable soil properties and increase land utilization and productivity. Deep tillage is a common method in agriculture for breaking up soil compaction, which can reduce soil bulk density and improve soil aeration and permeability.

[0003] Deep tillage shovels are prone to deformation and damage due to increased resistance. For example, they may be damaged by hitting stones in the soil, or deformed by tangled grass roots. Current technology uses safety pins to provide a buffer zone through deformation, but this buffer zone is small. When the stones are large, the shovel will continue to impact and deform. As more grass roots become entangled, the shovel will deform due to increasing resistance. Furthermore, damaged safety pins require immediate replacement by the driver, slowing down the deep tillage process. Rotary tillage requires adjusting the speed based on soil hardness. However, when deep tillage and rotary tillage are performed simultaneously, it's impossible to assess soil hardness in a timely manner and adjust the tillage speed accordingly.

[0004] Therefore, we propose a land improvement and loosening device for detecting the stress on a deep tillage shovel. Through stress analysis of the deep tillage shovel, we can selectively control the deep tillage shovel and the rotary tillage speed. Summary of the Invention

[0005] The purpose of this invention is to provide a soil improvement and loosening device to solve the problems mentioned in the background art, such as the deep tillage shovel not being able to return to its original position in time, the simultaneous deep tillage and rotary tillage, and the inability to adjust the rotary tillage speed in a timely manner according to soil hardness.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a soil improvement and loosening device, comprising: The vehicle body has a height-adjustable deep tillage support and a rotary tillage support installed on the underside of its floor plate; a centering shaft is installed on the underside of the deep tillage support; and rotary tillage blades and a rotary tillage motor that drives the rotary tillage blades are rotatably connected to the underside of the rotary tillage support. The shovel mounting bracket is fitted onto the outside of the centering shaft; two deep loosening shovels are connected to the outside of the shovel mounting bracket and are symmetrical about the center of the shovel mounting bracket. A torque limiter is installed between the centering shaft and the shovel mounting bracket to limit the relative rotation between the two, and to disconnect the rotation limiter when the torque between the two exceeds a safety threshold. The reset power mechanism, which is installed on the lower side of the deep tillage support, is used to select the rotation of the drive shovel mounting frame or disconnect the transmission connection with the shovel mounting frame; Torque detector, which is installed on the rotary tillage support, is used to detect the torque on the shovel mounting frame; Adjust the controller to electrically connect with the torque detector, rotary tiller motor, and reset power mechanism; When the torque exceeds the safety threshold, the adjustment controller controls the shovel mounting frame to rotate and reset via the reset power mechanism; when the torque detected by the torque detector approaches the safety threshold, the adjustment controller controls the corresponding shovel mounting frame to rotate via the reset power mechanism until another subsoil shovel is in the working position; when all torque detectors detect that the torque increases or decreases by the same amount, the adjustment controller adjusts the rotary tiller blade speed accordingly via the rotary tiller motor.

[0007] Preferably, an arc-shaped baffle is installed on the lower side of the rotary tillage support, and the arc-shaped baffle is on the side of the rotary tillage support away from the deep tillage support.

[0008] Preferably, a pressing rod is rotatably connected to the lower side of the rotary tiller, and a pressing roller is connected to the other end of the pressing rod; the pressing roller is located on the side of the arc-shaped baffle away from the rotary tiller blade.

[0009] Preferably, the safety threshold of the torque limiter is different when the shovel mounting frame rotates forward and backward, and the torque safety threshold when the shovel mounting frame rotates backward is greater than the torque safety threshold when the shovel mounting frame rotates forward.

[0010] Preferably, the torque limiter includes a guide limiting shell, and a limiting plate is slidably connected to the inner side of the guide limiting shell; a torque detector is installed on the inner side of the guide limiting shell, and a buffer spring is connected between the sensing end of the torque detector and the limiting plate. The outer side of the shovel mounting frame is provided with a limiting groove, and one end of the limiting plate is provided with a wedge-shaped end that matches the limiting groove.

[0011] Preferably, the lower side of the deep tillage support is provided with a clearance groove to avoid the deep loosening shovel, and a blade holder plate is installed on the inner side of the clearance groove. A grass-cutting knife is installed on the side of the blade holder plate near the deep loosening shovel.

[0012] Preferably, the shovel mounting frame includes two sets, which are arranged one in front of the other, and the front and rear shovel mounting frames are staggered.

[0013] Preferably, the reset power mechanism includes a driven bevel gear sleeved on the outside of the shovel mounting frame, and a driven main shaft movably connected to the deep tillage support. A first bevel gear and a second bevel gear are respectively sleeved at both ends of the driven main shaft, and the first bevel gear meshes with the driven bevel gear. The lower side of the deep tillage support is also movably connected to a transmission main shaft, and the two ends of the transmission main shaft are respectively provided with a drive bevel gear and a cam disc, and the drive bevel gear meshes with the second bevel gear. The lower side of the deep tillage support is fixedly installed with a push rod and slidably connected with a guide sleeve. A guide connecting rod is inserted into the inner side of the guide sleeve. One end of the guide connecting rod is hinged to a transmission connecting rod, and the other end of the transmission connecting rod is hinged to a cam plate. The other end of the guide connecting rod is connected to an inertial spring. Limiting rings are provided on both the front and rear sides of the inner cavity of the guide sleeve. A thrust plate is provided on the telescopic end of the push rod, and the thrust plate is located between the two limiting rings. The other end of the inertial spring is connected to the thrust plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1) This application uses a torque limiter to restrict the rotation of the shovel mounting frame. When the subsoil shovel is subjected to high pressure and there is a possibility of damage, the torque limiter is disengaged, and the shovel mounting frame reduces the pressure on the subsoil shovel by driving it to rotate. After the subsoil shovel leaves the rock impact area, the reset power mechanism pushes the shovel mounting frame to rotate and reset the subsoil shovel. When installing the subsoil shovel, this device does not require the installation of a safety pin, reducing the workload of the driver in assembling the subsoil shovel. At the same time, the subsoil shovel can automatically reset after the pressure is released, avoiding the need for the driver to reassemble the subsoil shovel and further reducing the driver's maintenance frequency.

[0015] 2) This device uses a torque detector to detect the pressure on a single subsoil shovel. When there are many grass roots and straw roots on the subsoil shovel, the shovel can be replaced by rotating the shovel mounting frame, thereby avoiding excessive stress and deformation of the subsoil shovel. At the same time, through the self-vibration of the subsoil shovel, the subsoil shovel can repeatedly pass through the grass-cutting knife, and then the grass-cutting knife can cut and remove the grass roots and straw roots on the subsoil shovel.

[0016] 3) This device detects the pressure on the deep tillage shovel through a torque detector, thereby determining the softness or hardness of the soil. The rotation speed of the rotary tillage blade is adjusted according to the softness or hardness of the soil, so as to loosen the soil more reasonably. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the deep-plowing support structure of the present invention; Figure 3 This is a schematic diagram of the rotary tillage support structure of the present invention; Figure 4 This is a schematic diagram of the reset power mechanism and shovel mounting frame structure of the present invention; Figure 5 This is a schematic diagram of the transmission connection structure of the transmission spindle of the present invention; Figure 6 This is a schematic cross-sectional view of the guide sleeve structure of the present invention; Figure 7 This is a schematic diagram of the connection structure between the shovel mounting frame and the deep tillage support of the present invention; Figure 8 This is a schematic diagram of the shovel mounting frame structure of the present invention; Figure 9 This is a schematic diagram of the internal structure of the torque limiter of the present invention.

[0018] In the picture: 11 Vehicle body, 12 Deep tillage support, 13 Rotary tillage support; 23 Rotary tiller blades, 24 Rotary tiller motor, 25 Arc-shaped baffle, 26 Ground pressing linkage, 27 Ground pressing roller, 28 Spraying nozzle, 29 Medicine tank; 31 Centering shaft, 32 Shovel mounting bracket, 33 Deep loosening shovel, 34 Synchronizing ring; 41 Torque limiter; 42 Torque detector; 121 Clearance groove, 122 Grass-cutting knife, 123 Knife holder plate; 321 limiting groove; 411 Guide limiting shell, 412 Limiting plate, 413 Buffer spring; 511 Driven bevel gear, 512 Driven spindle, 513 First bevel gear, 514 Second bevel gear, 515 Transmission spindle, 516 Driving bevel gear, 517 Cam disc; 521 Push rod, 522 Guide sleeve, 523 Guide connecting rod, 524 Transmission connecting rod, 525 Inertia spring, 526 Limiting ring, 527 Thrust plate. Detailed Implementation

[0019] 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.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0021] Example 1: Please see Figure 1-9The present invention provides a technical solution: a soil improvement and loosening device, comprising: a vehicle body 11, a shovel mounting frame 32, a torque limiter 41, a reset power mechanism, a torque detector 42, and an adjustment controller.

[0022] The vehicle body 11 can be a powered vehicle. When the vehicle body 11 is self-powered, its own energy supplies power to the reset power mechanism, torque detector 42, adjustment controller, and other structures. The vehicle body 11 can also be a trailer, and then other power structures will move the vehicle body 11. In this case, a power supply structure, such as a battery or internal combustion engine, needs to be equipped on the vehicle body 11.

[0023] The vehicle body 11 is equipped with a water tank and a medicine tank 29. The water tank stores water, and the medicine tank 29 stores biological agents or other soil loosening agents. The medicine tank 29 and the water tank are connected to the spraying nozzle 28 via pipes. The water in the water tank and the soil loosening agent in the medicine tank 29 are mixed in the spraying nozzle 28 and then sprayed out. A pressurization mechanism can be added to the pipes to pressurize the liquid, thereby increasing the spraying speed. Electrically controlled valves are installed on the pipes connecting the water tank, medicine tank 29, and spraying nozzle 28.

[0024] A deep tillage support 12 and a rotary tillage support 13 are slidably connected to the underside of the chassis 11. A deep tillage support push rod and a rotary tillage support push rod are also installed on the underside of the chassis 11. The deep tillage support push rod is used to push the deep tillage support 12 to slide up and down; the rotary tillage support push rod is used to push the rotary tillage support 13 to slide up and down. The up and down sliding of the deep tillage support 12 and the rotary tillage support 13 drives the deep loosening shovel 33 and the rotary tillage blade 23 to slide up and down. A rotary tillage blade 23 and a rotary tillage motor 24 are installed on the underside of the rotary tillage support 13; both ends of the rotary tillage blade 23 are connected to the rotary tillage support 13 via bearings; the output shaft of the rotary tillage motor 24 is connected to a pulley via a reduction gearbox, and one end of the rotary tillage blade 23 is also connected to a pulley; the two pulleys are connected by a belt for transmission.

[0025] The deep tillage support 12 includes a main support connected to the telescopic end of the deep tillage support push rod and a disassembly support connected to the main support. The disassembly support is connected to the main support by bolts. One centering shaft 31 is equipped with two disassembly supports, and the centering shaft 31 is located between the two disassembly supports and is fixedly connected to them. The shovel mounting bracket 32 ​​is sleeved on the outside of the centering shaft 31 and can rotate around the centering shaft 31. Synchronizing rings 34 are provided on both sides of the shovel mounting bracket 32. The other end of the synchronizing ring 34 abuts against the disassembly support of the deep tillage support 12. The synchronizing ring 34 is used to prevent the shovel mounting bracket 32 ​​from sliding along the axial direction of the centering shaft 31 and to reduce the friction between the shovel mounting bracket 32 ​​and the deep tillage support 12. The synchronizing ring 34 can be a bearing, for example, the outer side of the bearing is connected to the shovel mounting bracket 32, and the inner side of the bearing is connected to the shovel mounting bracket 32.

[0026] A subsoiler 33 is connected to the outer side of the shovel mounting frame 32. When the subsoiler 33 is in the working position, the lowest point of the subsoiler 33 is located behind the center of the rotating shaft of the shovel mounting frame 32. When the subsoiler 33 is performing deep tillage, it tends to reverse due to resistance, and at this time, the lowest point of the subsoiler 33 tends to move backward. This arrangement ensures that when the mounting frame 32 is subjected to excessive torque and reverses, the distance between the lowest point of the subsoiler 33 and the stones in the soil gradually increases, so that the pressure between the subsoiler 33 and the stones in the soil will only decrease, not increase, thus further protecting the subsoiler 33.

[0027] There are two subsoil shovels 33, which are symmetrical about the center of the shovel mounting frame 32. When there are too many grass roots and straw roots on the subsoil shovels 33, the shovel mounting frame 32 is rotated 180°. At this time, one subsoil shovel 33 with grass roots and straw roots is removed from the working position, and the other subsoil shovel 33 is rotated into the working position to perform deep tillage. The structure that fixes the subsoil shovels 33 on the outside of the shovel mounting frame 32 is arc-shaped. When the shovel mounting frame 32 rotates 90°, both subsoil shovels 33 are removed from the soil, thus providing sufficient buffer space for the subsoil shovels 33.

[0028] A torque limiter 41 is positioned between the centering shaft 31 and the shovel mounting bracket 32. The torque limiter 41 can employ a conventional structure, with the centering shaft 31 and the shovel mounting bracket 32 ​​installed at opposite ends of the torque limiter 41. When the torque between them is excessive, the torque limiter 41 can no longer restrict the shovel mounting bracket 32, allowing it to rotate. Reverse rotation of the shovel mounting bracket 32 ​​reduces the pressure between the submersible shovel 33 and the rock, thus preventing deformation or damage to the submersible shovel 33 upon impact with the rock. The safety threshold of the torque limiter 41, designed to protect the submersible shovel 33, is less than the force corresponding to the elastic limit point of the submersible shovel 33 material.

[0029] After the shovel mounting frame 32 rotates to reduce the force on the subsoil shovel 33, the reset power mechanism drives the subsoil shovel 33 to rotate and reset. The reset power mechanism is installed on the lower side of the deep tillage support 12 and can be driven by gears. The engagement or disengagement of the gears controls the connection or disconnection between the reset power mechanism and the shovel mounting frame 32. When the reset power mechanism is connected to the shovel mounting frame 32, it drives the shovel mounting frame 32 to rotate and reset. When the reset power mechanism is disconnected from the shovel mounting frame 32, it does not obstruct the normal rotation of the shovel mounting frame 32.

[0030] Torque detector 42 is mounted on rotary tiller support 13 to detect the torque applied to shovel mounting bracket 32; adjustment controller (not shown in the figure) is mounted on vehicle body 11. Adjustment controller is electrically connected to torque detector 42, rotary tiller motor 24, and reset power mechanism.

[0031] When loosening the soil, the vehicle body 11 moves the deep tillage shovel 33 forward, and the deep tillage shovel 33 performs deep tillage by moving; the rotary tillage motor 24 drives the rotary tillage blade 23 to rotate, tilling the ground. When the deep tillage shovel 33 touches a large stone, the deep tillage shovel 33 is subjected to a large impact force. At this time, the deep tillage shovel 33 drives the shovel mounting frame 32 to rotate. When the torque limiter 41 cannot limit the rotation of the shovel mounting frame 32, the deep tillage shovel 33 rotates out of the working position. At the same time, the torque detector 42 detects that the torque exceeds the safety threshold. After a period of time, the deep tillage support 12 moves upward, causing the deep tillage shovel 33 to leave the soil. Then, the adjustment controller drives the shovel mounting frame 32 to rotate and reset through the reset power mechanism. During the reset, the torque detector 42 can detect that the torque first increases and then decreases. The deep tillage shovel 33, which has left the working position, returns to the working position. The deep tillage support 12 moves downward, causing the deep tillage shovel 33 to return to the soil.

[0032] When the torque detector 42 corresponding to a certain shovel mounting bracket 32 ​​detects that the torque on the shovel mounting bracket 32 ​​is maintained near the safety threshold (for example, the torque is maintained at 90% of the safety threshold), it indicates that the subsoil shovel 33 is under greater pressure, which means that a lot of grass roots and straw roots are wrapped around the subsoil shovel 33. At this time, the deep tillage support 12 moves upward to drive the subsoil shovel 33 to detach from the ground. Then, the controller adjusts and drives the shovel mounting bracket 32 ​​to rotate 180° through the reset power mechanism (when rotating, the torque detector 42 detects an increase in torque, and when the subsoil shovel 33 enters the working position, the torque detector 42 detects a decrease in torque), so that another subsoil shovel 33 without grass roots or straw roots enters the working position. Subsequently, the deep tillage support moves downward to drive the subsoil shovel 33 back into the ground.

[0033] When all torque detectors 42 detect an equal increase in torque, it indicates that the soil hardness is relatively high. In this case, the rotation speed of the rotary tiller blades 23 should be appropriately increased. Conversely, when all torque detectors 42 detect an equal decrease in torque, it indicates that the soil hardness is relatively low. In this case, the rotation speed of the rotary tiller blades 23 should be appropriately decreased. The rotation speed of the rotary tiller blades 23 is adjusted by the controller using PWM technology. After all the subsoil shovels 33 have entered the same area of ​​soil, the torque increase / decrease value M detected by a single torque detector 42 and the average torque increase / decrease value W detected by all torque detectors 42 are considered. If the torque increase / decrease value M of all torque detectors 42 satisfies the condition 0.95W ≤ M ≤ 1.05W, then by default, all torque detectors 42 detect an equal increase or decrease in torque.

[0034] An alarm can also be added to the vehicle body 11, connected to the adjustment controller; when it is necessary to remind the driver, the alarm will sound an alarm to remind the driver to adjust the vehicle speed. If the ground is hard, the driver needs to slow down.

[0035] Example 2: Please see Figure 1 , Figure 3 The present invention provides a technical solution: a soil improvement and loosening device, based on the first embodiment; an arc-shaped baffle 25 is installed on the lower side of the rotary tillage support 13, the arc-shaped baffle 25 is on the side of the rotary tillage support 13 away from the deep tillage support 12, the arc-shaped baffle 25 is used to block the soil kicked up by the rotary tillage blades 23, thereby avoiding soil splashing.

[0036] A pressing rod 26 is rotatably connected to the lower side of the rotary tillage support 13, and a pressing roller 27 is connected to the other end of the pressing rod 26. During rotary tillage, the pressing roller 27 presses down on the land under the action of gravity. After the soil is rotary tilled, it becomes loose, and the pressing roller 27 compacts the surface soil.

[0037] Example 3: Please see Figure 4-9 The present invention provides a technical solution: a soil improvement and loosening device, which adjusts the safety threshold of torque limiter 41 based on embodiment one; the safety threshold of torque limiter 41 is different when the shovel mounting frame 32 rotates forward and backward, and the torque safety threshold when the shovel mounting frame 32 rotates backward is greater than the torque safety threshold when the shovel mounting frame 32 rotates forward.

[0038] When the subsoil shovel 33 avoids rocks, the shovel mounting bracket 32 ​​needs to be reversed; when changing the subsoil shovel 33 to enter the working position, the shovel mounting bracket 32 ​​needs to be rotated forward. When rotating forward, the safety threshold is small, which facilitates the reset of the power mechanism to drive the shovel mounting bracket 32 ​​to rotate.

[0039] Specifically, the torque limiter 41 includes a guide limiting shell 411, which is fixed to the deep tillage support 12 by bolts. A limiting plate 412 is slidably connected to the inner side of the guide limiting shell 411. One end of the limiting plate 412 is provided with an anti-detachment structure to prevent the limiting plate 412 from sliding out of the guide limiting shell 411. A limiting groove 321 is opened on the outer side of the shovel mounting frame 32. One end of the limiting plate 412 is provided with a wedge-shaped end that matches the limiting groove 321. The front slope of the wedge-shaped end is small (set at 20°-30°). Under the same torque, the force applied to this end face has a larger longitudinal component, which allows the shovel mounting frame 32 with a smaller torque to rotate forward. The rear slope of the wedge-shaped end is large (set at 70°-80°). Under the same torque, the force applied to this end face has a smaller longitudinal component, which allows the shovel mounting frame 32 with a larger torque to rotate in reverse.

[0040] A buffer spring 413 is provided at the other end of the limiting plate 412. The longitudinal component of the limiting plate 412 will push the buffer spring 413 to compress, thereby providing the limiting plate 412 with room to move. The torque detector 42 is installed inside the guide limiting shell 411. The buffer spring 413 is located between the sensing end of the torque detector 42 and the limiting plate 412. The torque detector 42 senses the magnitude of the torque by the magnitude of the pressure.

[0041] One shovel mounting bracket 32 ​​corresponds to two torque limiters 41, and the two torque limiters 41 are centrally symmetrical about the central axis of the shovel mounting bracket 32, so that the resistance applied by the torque limiters 41 will not change after the shovel mounting bracket 32 ​​rotates 180°.

[0042] Example 4: Please see Figure 7 This invention provides a technical solution: a soil improvement and loosening device. Based on embodiment three, an avoidance groove 121 is provided on the lower side of the deep tillage support 12 to avoid the deep loosening shovel 33. In fact, the avoidance groove 121 is the gap between the two disassembly supports. A blade holder plate 123 is installed on the inner side of the avoidance groove 121 and is fixed to the disassembly support of the deep tillage support 12. A grass-cutting blade 122 is installed on the side of the blade holder plate 123 near the deep loosening shovel 33. The grass-cutting blade 122 can be a flexible blade or can be slidably installed on the blade holder plate 123 to prevent the grass-cutting blade 122 from being damaged when the deep loosening shovel 33 collides with it. When one submerged shovel 33 is in the working position, the two submerged shovels 33 are located between the two grass-cutting blades 122 on both sides. Since the torque limiter 41 is limited by the buffer spring 413, when the torque of the shovel mounting frame 32 changes, the shovel mounting frame 32 will drive the submerged shovel 33 to shake (reciprocating forward and reverse rotation). When the submerged shovel 33 shakes between the two grass-cutting blades 122 on both sides, the grass-cutting blades 122 will cut the grass roots on the submerged shovel 33, thereby removing the grass roots from the submerged shovel 33.

[0043] Example 5: Please see Figure 1-2 This invention provides a technical solution: a soil improvement and loosening device. Based on Embodiment 1, the shovel mounting frame 32 includes two sets, arranged one in front of the other. Each set has multiple shovel mounting frames 32, which are staggered between the front and rear sides. This increases the spacing between adjacent shovel mounting frames 32 in the same set, thereby preventing the deep loosening shovel 33 from damaging soil aggregates.

[0044] Example 6: Please see Figure 4-6 The present invention provides a technical solution: a soil improvement and loosening device, which further defines the reset power mechanism based on the first embodiment.

[0045] The reset power mechanism includes a transmission mechanism and a reciprocating control mechanism; the transmission mechanism includes a driven bevel gear 511, a driven main shaft 512, a first bevel gear 513, a second bevel gear 514, a transmission main shaft 515, and a driving bevel gear 516, i.e., a cam disc 517.

[0046] Driven bevel gear 511 is sleeved on the outside of shovel mounting frame 32 and rotates synchronously with shovel mounting frame 32; driven spindle 512 is connected to disassembly bracket of deep tillage bracket 12 through bearings, and first bevel gear 513 and second bevel gear 514 are respectively sleeved at both ends of driven spindle 512, and first bevel gear 513 meshes with driven bevel gear 511. The transmission main shaft 515 is connected to the main support of the deep tillage support 12 via bearings. There is at least one transmission main shaft 515. When there is only one transmission main shaft 515, a drive bevel gear 516 and a cam disk 517 are respectively installed at both ends of the transmission main shaft 515. When there are multiple transmission main shafts 515, the first transmission main shaft 515 has a drive bevel gear 516 installed at one end, the last transmission main shaft 515 has a cam disk 517 installed at one end, and the remaining transmission main shafts have transition bevel gears installed at both ends. The other ends of the first and last transmission main shafts 515 are also fitted with transition bevel gears. The transition bevel gears on adjacent transmission main shafts 515 mesh with each other, and the second bevel gear 514 meshes with the drive bevel gear 516, thereby realizing the synchronous rotation of the drive bevel gear 516 and the cam disk 517.

[0047] The transmission ratio between the driving bevel gear 516 and the driven bevel gear 511 is 2, meaning that for every one revolution of the driving bevel gear 516, the driven bevel gear 511 rotates half a revolution. The driving bevel gear 516 rotates synchronously with the cam disk 517.

[0048] The reciprocating control mechanism includes a push rod 521, a guide sleeve 522, a guide connecting rod 523, a transmission connecting rod 524, an inertia spring 525, a limit ring 526, and a thrust plate 527.

[0049] The outer shell of push rod 521 is installed on the lower side of the entire frame of deep tillage support 12, and guide sleeve 522 is slidably installed on the lower side of the entire frame of deep tillage support 12; guide connecting rod 523 is inserted into the inner side of guide sleeve 522, guide connecting rod 523 is fixedly connected to guide sleeve 522, one end of guide connecting rod 523 is hinged to transmission connecting rod 524, the other end of transmission connecting rod 524 is hinged to cam disk 517, and the other end of guide connecting rod 523 is connected to inertia spring 525; limit rings 526 are provided on the front and rear sides of the inner cavity of guide sleeve 522, and a thrust plate 527 is provided on the telescopic end of push rod 521, and the thrust plate 527 is located between the two limit rings 526; the other end of inertia spring 525 is connected to thrust plate 527.

[0050] The push rod 521 can be a hydraulic push rod. When the push rod 521 is working, it first compresses the inertia spring 525. When the push plate 527 at the telescopic end of the push rod 521 abuts against the limit ring 526 on one side, the push rod 521 pushes the guide link 523 to slide through the guide sleeve 522. The guide link 523 drives the cam disk 517 to rotate through the transmission link 524. The cam disk 517 drives the second bevel gear 514 to rotate through the transmission main shaft 515 and the driving bevel gear 516. The second bevel gear 514 drives the driven bevel gear 511 to rotate through the driven main shaft 512 and the first bevel gear 513, thereby driving the shovel mounting frame 32 to rotate.

[0051] Push rod 521 completes one reciprocating stroke, and cam disk 517 rotates one revolution. During operation, the telescopic end of push rod 521 first extends, driving cam disk 517 to rotate half a revolution via guide sleeve 522, guide connecting rod 523, and transmission connecting rod 524. Then, cam disk 517 continues to rotate under inertia. At this time, the elastic force of inertia spring 525 allows guide sleeve 522 and guide connecting rod 523 to continue moving, ensuring that cam disk 517 can continue to rotate under inertia. After push rod 521 completes its extension action, the telescopic end begins to retract. When the thrust plate 527 and the side limit ring... After 526 comes into contact, the guide sleeve 522, guide rod 523, and transmission rod 524 drive the cam disk 517 to rotate another half turn. After the cam disk 517 rotates one turn, the driven bevel gear 511 drives the shovel mounting bracket 32 ​​to rotate half a turn. The limit plate 412 is engaged in the limit groove 321, and the shovel mounting bracket 32 ​​cannot rotate, thus preventing the cam disk 517 from continuing to rotate. At this time, the inertia spring 525 is in a stretched state, and the push rod 521, guide sleeve 522, guide rod 523, and transmission rod 524 do not hinder the normal rotation of the cam disk 517.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or basic characteristics. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of the invention is defined by the appended claims rather than the foregoing description. Therefore, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A soil improvement and loosening device, characterized in that, include: The vehicle body (11) has a deep tillage support (12) and a rotary tillage support (13) with adjustable height on the underside of its bottom plate; a centering shaft (31) is installed on the underside of the deep tillage support (12); a rotary tillage blade (23) and a rotary tillage motor (24) for driving the rotary tillage blade (23) to rotate are rotatably connected on the underside of the rotary tillage support (13). The shovel mounting bracket (32) is sleeved on the outside of the centering shaft (31); the outside of the shovel mounting bracket (32) is connected to a deep loosening shovel (33), and there are two deep loosening shovels (33), which are symmetrical about the center of the shovel mounting bracket (32); Torque limiter (41), which is disposed between centering shaft (31) and shovel mounting bracket (32), is used to limit the relative rotation between the two and disconnects the rotation limit after the torque between the two exceeds the safety threshold; The reset power mechanism is installed on the lower side of the deep tillage support (12) and is used to select the rotation of the drive shovel mounting frame (32) or disconnect the transmission connection with the shovel mounting frame (32); Torque detector (42), which is set on rotary tillage support (13), is used to detect the torque on shovel mounting frame (32); Adjust the controller and electrically connect it to the torque detector (42), the rotary tiller motor (24), and the reset power mechanism; After the torque exceeds the safety threshold, the adjustment controller controls the shovel mounting bracket (32) to rotate and reset through the reset power mechanism; when the torque detected by the torque detector (42) is close to the safety threshold, the adjustment controller controls the corresponding shovel mounting bracket (32) to rotate through the reset power mechanism until another deep tillage shovel (33) is in the working position; when all torque detectors (42) detect that the torque increases or decreases by the same amount, the adjustment controller adjusts the rotation speed of the rotary tillage blade (23) through the rotary tillage motor (24); When the shovel mounting bracket (32) rotates forward and backward, the safety threshold of the torque limiter (41) is different, and the torque safety threshold when the shovel mounting bracket (32) rotates backward is greater than the torque safety threshold when the shovel mounting bracket (32) rotates forward.

2. The soil improvement and loosening device according to claim 1, characterized in that: An arc-shaped baffle (25) is installed on the lower side of the rotary tillage support (13), and the arc-shaped baffle (25) is on the side of the rotary tillage support (13) away from the deep tillage support (12).

3. The soil improvement and loosening device according to claim 1, characterized in that: The lower side of the rotary tillage support (13) is rotatably connected to a pressing rod (26), and the other end of the pressing rod (26) is connected to a pressing roller (27); the pressing roller (27) is located on the side of the arc-shaped baffle (25) away from the rotary tillage blade (23).

4. The soil improvement and loosening device according to claim 1, characterized in that: The torque limiter (41) includes a guide limiting shell (411), and a limiting plate (412) is slidably connected to the inner side of the guide limiting shell (411); a torque detector (42) is installed on the inner side of the guide limiting shell (411), and a buffer spring (413) is connected between the sensing end of the torque detector (42) and the limiting plate (412). The outer side of the shovel mounting bracket (32) has a limiting groove (321), and one end of the limiting plate (412) is provided with a wedge-shaped end that matches the limiting groove (321).

5. The soil improvement and loosening device according to claim 1, characterized in that: The deep tillage support (12) has an avoidance groove (121) on its lower side to avoid the deep loosening shovel (33). A blade holder plate (123) is installed on the inner side of the avoidance groove (121). A grass-cutting knife (122) is installed on the side of the blade holder plate (123) near the deep loosening shovel (33).

6. The land improvement and loosening device according to claim 1, characterized in that: The shovel mounting frame (32) includes two sets, which are arranged one in front of the other and staggered.

7. The land improvement and loosening device according to claim 1, characterized in that: The reset power mechanism includes a driven bevel gear (511) sleeved on the outside of the shovel mounting frame (32) and a driven main shaft (512) movably connected to the deep tillage support (12). The two ends of the driven main shaft (512) are respectively sleeved with a first bevel gear (513) and a second bevel gear (514), and the first bevel gear (513) meshes with the driven bevel gear (511). The lower side of the deep tillage support (12) is also movably connected to a transmission main shaft (515). The two ends of the transmission main shaft (515) are respectively provided with an active bevel gear (516) and a cam disk (517). The active bevel gear (516) meshes with the second bevel gear (514). The deep tillage support (12) is fixedly installed with a push rod (521) and slidably connected with a guide sleeve (522). A guide connecting rod (523) is inserted into the inner side of the guide sleeve (522). A transmission connecting rod (524) is hinged to one end of the guide connecting rod (523). The other end of the transmission connecting rod (524) is hinged to the cam disk (517). An inertial spring (525) is connected to the other end of the guide connecting rod (523). Limiting rings (526) are provided on both the front and rear sides of the inner cavity of the guide sleeve (522). A thrust plate (527) is provided on the telescopic end of the push rod (521), and the thrust plate (527) is located between the two limiting rings (526). The other end of the inertial spring (525) is connected to the thrust plate (527).

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