A stalk crushing component and rapeseed combine harvester

Abstract

The invention discloses a stalk crushing assembly and a rapeseed combine harvester in the technical field of combine harvesters, comprising a harvester body and a crushing box. The crushing box is installed on the right side of the harvester body. A material box is fixedly installed at the bottom end of the crushing box body. Two opening and closing plates are arranged in the middle of the material box through a weighing mechanism. The weighing mechanism is used for driving the opening and closing plates to flip downward when a certain amount of material is accumulated at the top of the opening and closing plates. A mixing mechanism is arranged on the lower side of the opening and closing plates. The mixing mechanism is used for mixing a certain amount of composting agent into the fallen crushed materials. A spreading box is installed at the bottom end of the material box. An adaptive spreading mechanism is arranged at the bottom opening of the spreading box. The adaptive spreading mechanism is used for self-adjusting the spreading speed according to the moving speed of the harvester body and arbitrarily controlling the spreading thickness. The problem that the existing stalk crushing assembly and the rapeseed combine harvester do not have the self-adjusting function of scattering stalk crushed materials and the function of synchronous fertilization of composting agent is solved.

Description

Technical Field

[0001] The invention relates to the technical field of combine harvesters, in particular to a stalk crushing component and a rapeseed combine harvester. Background Art

[0002] A combine harvester is a combined machine for harvesting crops. It can complete the processes of harvesting, threshing, separating stems, and removing debris of cereal crops at one time, and it is a harvesting machinery that obtains grains directly from the field. The steps of rapeseed harvesting include: mechanically harvesting rapeseed, crushing stems, evenly spreading them in the field, spreading base fertilizer, dry rotary tillage to kill stubble and return the fields to the fields, watering the fields, and land preparation.

[0003] In the existing technology, the stalk crushing device of the rapeseed harvester has a relatively simple structure. The rapeseed is harvested into the machine and processed and then directly discharged. However, there are differences in the driving speed of the harvester and the rapeseed planting density, which makes the scattered stalk fragments unevenly distributed. Secondly, after the stalks are crushed and returned to the field, fertilization equipment is required to apply composting agents to the scattered stalk fragments in proportion, and the operation process is very cumbersome. The existing stalk crushing components and rapeseed combine harvesters do not have the self-adjusting function of stalk fragment spreading and the function of synchronous fertilization of composting agents.

[0004] Based on this, the present invention designs a stalk crushing component and a rapeseed combine harvester to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a stalk crushing assembly and a rapeseed combine harvester with a self-regulating function of scattering stalk chips and a synchronous fertilization function of a composting agent, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a stalk crushing assembly, comprising a harvester body and a crushing box, wherein the crushing box is installed on the right side of the harvester body, a material box is fixedly installed at the bottom end of the crushing box body, and two opening and closing plates are arranged in the middle of the material box through a weighing mechanism, and the weighing mechanism is used to drive the opening and closing plates to flip downward when a certain amount of material is accumulated on the top of the opening and closing plates, and a mixing mechanism is arranged on the lower side of the opening and closing plates, and the mixing mechanism is used to mix a certain amount of composting agent into the fallen crushed materials, and a spreading box is installed at the bottom end of the material box, and an adaptive spreading mechanism is arranged at the bottom end opening of the spreading box, and the adaptive spreading mechanism is used to self-adjust the spreading speed according to the moving speed of the harvester body and arbitrarily control the spreading thickness;

[0007] As a further scheme of the present invention, the weighing mechanism includes an installation frame slidably connected to the inner side of the material box, and the front and rear ends of the two opening and closing plates on the side away from each other are fixedly installed with a rotating shaft, and the ends of the rotating shaft pass through the installation frame and are rotatably connected thereto, and two guide frames are fixedly installed on the bottom of the left end of the installation frame, and two support frames are fixedly installed on the left end of the material box, and the bottom ends of the support frames pass through the guide frames and are slidably connected thereto, and the top of the left end of the guide frame is connected to the top of the support frame through a tension spring, and the rotating shafts at the rear ends of the two opening and closing plates are connected by a reversing mechanism, and the reversing mechanism is used to flip the two opening and closing plates in opposite directions, and a reversing mechanism is provided at the front end of the installation frame, and the reversing mechanism is used to drive the two opening and closing plates to flip downward when the installation frame can no longer move downward, and drive the two opening and closing plates to reset synchronously when the installation frame is reset upward;

[0008] As a further solution of the present invention, the reversing mechanism includes a rotating rod rotatably connected to the rear side of the left end of the mounting frame, a first gear is fixedly installed on the outer side of the rotating rod, a rear end of the rotating shaft at the rear side of the left end passes through the material box and is fixedly installed with a second gear, the first gear and the second gear are meshed with each other, and the rear end of the rotating shaft at the rear side of the right end passes through the material box and is connected to the rotating rod through a first transmission belt;

[0009] As a further solution of the present invention, the flip mechanism includes a limiting ring fixedly installed on the front side of the right end of the mounting frame, a plug rod is slidably connected to the inner side of the limiting ring, a baffle is fixedly installed on the top of the plug rod, a disc is fixedly installed on the front end of the rotating shaft at the front side of the right end, a slot is opened on the top of the disc, the bottom end of the plug rod passes through the slot and is slidably connected thereto, a baffle rod is fixedly installed on the front side of the right end of the material box, the baffle rod corresponds to the right end of the baffle, the outer side of the rotating shaft at the rear side of the right end is rotatably connected to the first gear ring through a one-way bearing, and a first rack is fixedly installed on the rear side of the right end of the material box, and the first rack is meshed with the right end of the first gear ring;

[0010] As a further solution of the present invention, the mixing mechanism includes a fertilizer box fixedly installed at the left end of the material box, a connecting pipe is fixed to the bottom of the right end of the fertilizer box, the left end opening of the connecting pipe is connected to the fertilizer box, and the right end opening is connected to the material box, the left end of the connecting pipe is cylindrical, and the inner side thereof is rotatably connected to a driving rod, a plurality of material shifting plates are fixedly installed on the outer side of the driving rod, the material shifting plates are fitted with the inner wall of the connecting pipe, the front end of the driving rod passes through the connecting pipe and is provided with a transmission mechanism, the transmission mechanism is used to drive the driving rod to rotate when the mounting frame can no longer move downward, and an electric stirring rod is installed on the inner side of the material box;

[0011] As a further solution of the present invention, the transmission mechanism includes a support block fixedly installed on the front side of the left end of the connecting pipe, the inner side of the support block is slidably connected with a second rack, the top of the second rack is connected to the top of the support block through a compression spring, the outer side of the driving rod is rotatably connected with a second gear ring through a one-way bearing, the left side of the second gear ring is meshed with the second rack, a pressure rod is fixedly installed on the front side of the bottom end of the second rack, and a pressure plate is fixedly installed on the left end of the front guide frame, and the left end of the pressure plate corresponds to the pressure rod;

[0012] As a further solution of the present invention, the adaptive material spreading mechanism includes two transmission shafts rotatably connected inside the material spreading box, the two transmission shafts are connected by a conveyor belt, the front and rear ends of the two transmission shafts pass through the material spreading box and are connected by a second transmission belt, the front and rear ends of the material spreading box are rotatably connected with walking wheels at the bottom, and the front and rear ends of the material spreading box are rotatably connected with friction wheels, the bottom ends of the friction wheels are both in contact with the walking wheels, the front and rear ends of the left transmission shaft are connected to the friction wheels by a third transmission belt, a plurality of telescopic boxes are evenly fixedly installed on the surface of the conveyor belt, the inner sides of the telescopic boxes are slidably connected with telescopic plates by compression springs, and a top plate is provided on the top of the right end of the material spreading box through an adjusting mechanism, and the adjusting mechanism is used to freely control the thickness of the material spreading by controlling the height of the top plate;

[0013] As a further solution of the present invention, the adjustment mechanism includes a threaded rod rotatably connected to the right side of the bottom end of the material box, the left end of the top plate is slidably connected to the material box, and an adjustment block is fixedly installed on the top of the top plate, the bottom end of the threaded rod passes through the adjustment block and is threadedly connected thereto, and two arc rods are fixedly installed on the left end of the top plate, and the arc rods are located at the bottom opening of the material box.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The present invention provides a weighing mechanism and a mixing mechanism, so that the amount of straw fragments falling each time is constant, thereby facilitating the mixing of the straw fragments with the composting agent in proportion, which brings convenience to the composting of rapeseed straw; the mixing mechanism stirs the straw fragments and the composting agent, increases the contact area between the composting agent and the straw fragments, and further accelerates the composting of the straw; the device applies the composting agent during the process of straw crushing and returning to the field, greatly reducing the field processing steps, improving the field processing efficiency after rapeseed harvesting, and making it unnecessary for staff to use fertilization equipment to spray the field with the composting agent, saving labor and solving the problem that the existing stem crushing assembly and rapeseed combine harvester do not have the function of synchronous fertilization with the composting agent.

[0016] 2. The present invention sets an adaptive spreading mechanism. When the straw fragments are mixed with the composting agent and slowly fall into the spreading box, the adaptive spreading mechanism controls the spreading speed according to the moving speed of the harvester, so that the straw fragments are distributed more evenly in the field, and the subsequent fertility of the field is more even, which brings convenience to the subsequent cultivation; secondly, the thickness of the stalk fragments spread into the field can be controlled by the device, so that the staff can freely adjust it according to the conditions of the land, which greatly increases the practicality of the device and solves the problem that the existing stalk crushing components and rapeseed combine harvesters do not have the self-adjusting function of stalk fragment spreading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of a partial cross-section of the internal structure of the present invention from a front viewing angle;

[0019] Figure 3 It is a schematic diagram of the partial structure of the present invention from the front perspective;

[0020] Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0021] Figure 5 For the present invention Figure 3 The enlarged structural diagram at B in the middle;

[0022] Figure 6 It is a schematic diagram of the partial structure of the present invention from a rear viewing angle;

[0023] Figure 7 For the present invention Figure 6 The enlarged structural diagram at C in the middle;

[0024] Figure 8 For the present invention Figure 6 The enlarged structural diagram at D in the middle;

[0025] Fig. 9 It is a schematic diagram of the connection structure between the opening and closing plate and the installation frame of the present invention;

[0026] Fig.10 It is a schematic diagram of the cross-sectional structure of the internal structure of the present invention from the front viewing angle;

[0027] Fig.11 It is a schematic diagram of the connection structure between the material spreading box and the conveyor belt of the present invention.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 1. Harvester body; 2. Crusher box; 3. Material box; 4. Opening and closing plate; 5. Material spreading box; 6. Mounting frame; 7. Rotating shaft; 8. Guide frame; 9. Support frame; 10. Rotating rod; 11. First gear; 12. Second gear; 13. First transmission belt; 14. Limiting ring; 15. Inserting rod; 16. Baffle; 17. Disc; 18. Slot; 19. Baffle rod; 20. First gear ring; 21. First rack; 22. Fertilizer box; 23. Connecting pipe; 24, driving rod; 25, material removal plate; 26, electric stirring rod; 27, supporting block; 28, second rack; 29, second gear ring; 30, pressure rod; 31, pressure plate; 32, transmission shaft; 33, conveyor belt; 34, second transmission belt; 35, walking wheel; 36, third transmission belt; 37, telescopic box; 38, telescopic plate; 39, top plate; 40, threaded rod; 41, adjusting block; 42, arc rod; 43, friction wheel. DETAILED DESCRIPTION

[0030] See also Figure 1-Figure 11 The present invention provides a technical solution: a stalk crushing assembly, comprising a harvester body 1 and a crushing box 2, wherein the crushing box 2 is installed on the right side of the harvester body 1, a material box 3 is fixedly installed at the bottom end of the crushing box body, and two opening and closing plates 4 are arranged in the middle of the material box 3 through a weighing mechanism, and the weighing mechanism is used to drive the opening and closing plates 4 to flip downward when a certain amount of material is accumulated at the top of the opening and closing plates 4, and a mixing mechanism is arranged on the lower side of the opening and closing plates 4, and the mixing mechanism is used to mix a certain amount of composting agent into the fallen crushed material, and a spreading box 5 is installed at the bottom end of the material box 3, and an adaptive spreading mechanism is arranged at the bottom end opening of the spreading box 5, and the adaptive spreading mechanism is used to self-adjust the spreading speed according to the moving speed of the harvester body 1, and arbitrarily control the spreading thickness;

[0031] The weighing mechanism includes a mounting frame 6 slidably connected to the inner side of the material box 3, and a rotating shaft 7 is fixedly installed at both ends of the front and rear sides of the two opening and closing plates 4 away from each other, and the ends of the rotating shaft 7 pass through the mounting frame 6 and are rotatably connected thereto. Two guide frames 8 are fixedly installed at the bottom of the left end of the mounting frame 6, and two support frames 9 are fixedly installed at the left end of the material box 3. The bottom ends of the support frames 9 pass through the guide frames 8 and are slidably connected thereto. The top of the left end of the guide frame 8 is connected to the top of the support frame 9 through a tension spring. The rotating shafts 7 at the rear ends of the two opening and closing plates 4 are connected by a reversing mechanism, and the reversing mechanism is used to flip the two opening and closing plates 4 in opposite directions. A flipping mechanism is provided at the front end of the mounting frame 6, and the flipping mechanism is used to drive the two opening and closing plates 4 to flip downward when the mounting frame 6 can no longer move downward, and drive the two opening and closing plates 4 to reset synchronously when the mounting frame 6 is reset upward;

[0032] During operation, the harvester conveys the separated rapeseed stalks into the crushing box 2. After being crushed by the crushing box 2, the stalks enter the material box 3. The stalk fragments are blocked by the two opening and closing plates 4 and gradually accumulate on the top of the opening and closing plates 4. As the stalk fragments accumulated on the top of the opening and closing plates 4 gradually increase, the opening and closing plates 4 slowly move downward under the pressure. The opening and closing plates 4 move downward and drive the guide frame 8 to move downward through the mounting frame 6. At this time, the guide frame 8 slides downward on the outside of the support frame 9. When the guide frame 8 and the mounting frame 6 can no longer move downward, the flip mechanism drives the two opening and closing plates to move downward. The plate 4 flips downward, and the stalk fragments at the top of the opening and closing plate 4 fall downward. At this time, the opening and closing plate 4 is no longer squeezed downward, and the guide frame 8 drives the installation frame 6 and the opening and closing plate 4 to move upward under the pull of the tension spring. When the installation frame 6 returns to the initial position, the flip mechanism drives the opening and closing plate 4 to rotate again, so that the opening and closing plate 4 is reset, thereby preparing for the next weighing operation; by setting the weighing mechanism, the amount of stalk fragments falling each time is constant, so that it is convenient for the subsequent stalk fragments to be mixed with the composting agent in proportion, which brings convenience to the composting of rapeseed straw;

[0033] When the mounting frame 6 can no longer move downward, the mixing mechanism adds a certain amount of composting agent into the fallen straw fragments, and stirs the straw fragments and the composting agent, thereby increasing the contact surface between the composting agent and the straw fragments, and further accelerating the composting of the straw; the device applies the composting agent during the process of straw crushing and returning to the field, which greatly reduces the processing steps of the field, improves the processing efficiency of the field after rapeseed harvest, and makes it unnecessary for the staff to use fertilization equipment to spray the composting agent on the field, thus saving labor;

[0034] When the straw fragments are mixed with the composting agent and slowly fall into the spreading box 5, the adaptive spreading mechanism controls the spreading speed according to the moving speed of the harvester, so that the straw fragments are distributed more evenly in the field, and the subsequent fertility of the field is more even, which brings convenience to the subsequent cultivation; secondly, the thickness of the stalk fragments spread into the field can be controlled by the device, so that the staff can freely adjust it according to the conditions of the land, which greatly increases the practicality of the device and solves the problem that the existing stalk crushing components and rapeseed combine harvesters do not have the self-adjusting function of stalk fragment spreading and the synchronous fertilization function of the composting agent.

[0035] As a further solution of the present invention, the reversing mechanism includes a rotating rod 10 rotatably connected to the rear side of the left end of the mounting frame 6, a first gear 11 is fixedly installed on the outer side of the rotating rod 10, a rear end of the rotating shaft 7 at the rear side of the left end passes through the material box 3, and a second gear 12 is fixedly installed, the first gear 11 and the second gear 12 are meshed with each other, and a rear end of the rotating shaft 7 at the rear side of the right end passes through the material box 3 and is connected to the rotating rod 10 through a first transmission belt 13;

[0036] During operation, when the flipping mechanism drives the opening and closing plate 4 to flip upward for reset, the flipping mechanism drives the rotating shaft 7 on the rear side of the right end to rotate, and the rotating shaft 7 on the rear side of the right end drives the rotating rod 10 to rotate through the first transmission belt 13, and the rotating rod 10 rotates through the first gear 11 to drive the second gear 12 to rotate in the opposite direction, and the second gear 12 rotates in the opposite direction and drives the opening and closing plate 4 on the left side to rotate in the opposite direction through the rotating shaft 7, thereby realizing that the two opening and closing plates 4 rotate in opposite directions.

[0037] As a further solution of the present invention, the flip mechanism includes a limit ring 14 fixedly installed on the front right end of the mounting frame 6, a plunger 15 is slidably connected to the inner side of the limit ring 14, a baffle 16 is fixedly installed on the top of the plunger 15, a disc 17 is fixedly installed on the front end of the rotating shaft 7 at the front right end, a slot 18 is provided on the top of the disc 17, the bottom end of the plunger 15 passes through the slot 18 and is slidably connected thereto, a baffle 19 is fixedly installed on the front right end of the material box 3, the baffle 19 corresponds to the right end of the baffle 16, a first gear ring 20 is rotatably connected to the outer side of the rotating shaft 7 at the rear right end through a one-way bearing, a first rack 21 is fixedly installed on the rear right end of the material box 3, and the first rack 21 is meshed with the right end of the first gear ring 20;

[0038] When working, the installation frame 6 moves downward, driving the limit ring 14 and the insertion rod 15 to move downward. When the installation frame 6 is about to be unable to move downward, the baffle 16 is blocked by the baffle rod 19 and cannot move anymore. At this time, the installation frame 6 and the disc 17 continue to move downward, so that the bottom end of the insertion rod 15 moves out of the slot 18, and the disc 17 is in an unlocked state. At this time, the opening and closing plate 4 flips downward under the pressure of the stem fragments to achieve quantitative discharge; when the installation frame 6 moves upward, the opening and closing plate 4 is in a vertical state and moves upward. At this time, the insertion rod 15 is in contact with the top of the disc 17 under the action of gravity. The ends are fitted until the first toothed ring 20 is meshed with the first rack 21, and the opening and closing plate 4 and the first toothed ring 20 continue to move upward, so that the first toothed ring 20 is driven by the first rack 21 to rotate, and the rotation of the first toothed ring 20 drives the opening and closing plate 4 to rotate through the one-way bearing, thereby providing power for the resetting of the opening and closing plate 4; when the opening and closing plate 4 drives the first ring to move downward, the first rack 21 drives the first toothed ring 20 to rotate in the opposite direction. At this time, the first toothed ring 20 cannot drive the opening and closing plate 4 to rotate under the action of the one-way bearing, thereby not hindering the downward movement of the opening and closing plate 4.

[0039] As a further solution of the present invention, the mixing mechanism includes a fertilizer box 22 fixedly installed at the left end of the material box 3, a connecting pipe 23 is fixed to the bottom of the right end of the fertilizer box 22, the left end opening of the connecting pipe 23 is connected to the fertilizer box 22, and the right end opening is connected to the material box 3, the left end of the connecting pipe 23 is cylindrical, and the inner side thereof is rotatably connected to a driving rod 24, a plurality of material shifting plates 25 are fixedly installed on the outer side of the driving rod 24, the material shifting plates 25 are fitted with the inner wall of the connecting pipe 23, the front end of the driving rod 24 passes through the connecting pipe 23 and is provided with a transmission mechanism, the transmission mechanism is used to drive the driving rod 24 to rotate when the mounting frame 6 can no longer move downward, and an electric stirring rod 26 is installed on the inner side of the material box 3;

[0040] During operation, the fertilizer box 22 contains a composting agent. When the mounting frame 6 can no longer move downward, the transmission mechanism drives the driving rod 24 to rotate 90° counterclockwise. Fig.10 As shown, the driving rod 24 rotates to push a certain amount of composting agent to the right through the material transfer plate 25, and the composting agent passes through the connecting pipe 23 into the material box 3, and is stirred by the electric stirring rod 26 to be fully mixed with the stem fragments, thereby increasing the contact area between the composting agent and the straw fragments and further accelerating the composting of the straw.

[0041] As a further solution of the present invention, the transmission mechanism includes a support block 27 fixedly installed on the front side of the left end of the connecting pipe 23, a second rack 28 is slidably connected to the inner side of the support block 27, the top of the second rack 28 is connected to the top of the support block 27 through a compression spring, the outer side of the driving rod 24 is rotatably connected to a second gear ring 29 through a one-way bearing, the left side of the second gear ring 29 is meshed with the second rack 28, a pressure rod 30 is fixedly installed on the front side of the bottom end of the second rack 28, a pressure plate 31 is fixedly installed on the left end of the front guide frame 8, and the left end of the pressure plate 31 corresponds to the pressure rod 30;

[0042] During operation, the mounting frame 6 moves downward and drives the pressure plate 31 to move downward through the guide frame 8. During the downward movement of the pressure plate 31, the pressure rod 30 is pushed downward. The downward movement of the pressure rod 30 drives the second rack 28 to move downward. The second rack 28 moves downward and drives the second gear ring 29 to rotate counterclockwise. The counterclockwise rotation of the second gear ring 29 drives the driving rod 24 to rotate counterclockwise through the one-way bearing, thereby providing power for the rotation of the driving rod 24; when the pressure plate 31 no longer squeezes the pressure rod 30, the second rack 28 moves upward under the push of the compression spring, and the second rack 28 moves upward and drives the second gear ring 29 to rotate clockwise. The clockwise rotation of the second gear ring 29 cannot drive the driving rod 24 to rotate through the one-way bearing, thereby realizing the one-way rotation of the driving rod 24 and the resetting of the second rack 28.

[0043] As a further solution of the present invention, the adaptive material spreading mechanism includes two transmission shafts 32 rotatably connected to the inner side of the material spreading box 5, the two transmission shafts 32 are connected by a conveyor belt 33, the front and rear ends of the two transmission shafts 32 pass through the material spreading box 5 and are connected by a second transmission belt 34, the front and rear ends of the material spreading box 5 are rotatably connected to the bottom with walking wheels 35, and the front and rear ends of the material spreading box 5 are rotatably connected to the friction wheels 43, the bottom ends of the friction wheels 43 are both in contact with the walking wheels 35, the front and rear ends of the left transmission shaft 32 are connected to the friction wheels 43 by a third transmission belt 36, a plurality of telescopic boxes 37 are evenly fixedly installed on the surface of the conveyor belt 33, the inner sides of the telescopic boxes 37 are slidably connected with telescopic plates 38 by compression springs, and a top plate 39 is provided on the top of the right end of the material spreading box 5 through an adjusting mechanism, and the adjusting mechanism is used to freely control the thickness of the material spread by controlling the height of the top plate 39;

[0044] During operation, the mixed stalk fragments are blocked by the conveyor belt 33 and accumulated at the bottom end of the material box 3. The movement of the harvester causes the walking wheel 35 to rotate driven by the ground. The rotation of the walking wheel 35 drives the friction wheel 43 to rotate in the opposite direction. The friction wheel 43 rotates through the third transmission belt 36 to drive the left transmission shaft 32 to rotate. The left transmission shaft 32 rotates through the second transmission belt 34 to drive the right transmission shaft 32 to rotate synchronously. At this time, the two transmission shafts 32 drive the telescopic box 37 to move through the conveyor belt 33. During the movement of several telescopic boxes 37 on the upper side to the right, the material at the bottom end of the material box 3 is pushed to move to the right until the material is thrown out from the right end of the spreading box 5. Since the telescopic box 37 is in contact with the top of the top plate 39, the material pushed out by the telescopic box 37 and the telescopic plate 38 is the same each time, and the pushing speed of the pushing box and the telescopic plate 38 is synchronized with the walking wheel 35, thereby achieving uniform spreading of materials according to the moving speed of the harvester.

[0045] As a further solution of the present invention, the adjustment mechanism includes a threaded rod 40 rotatably connected to the right side of the bottom end of the material box 3, the left end of the top plate 39 is slidably connected to the material box 3, and an adjustment block 41 is fixedly installed on the top of the top plate 39, the bottom end of the threaded rod 40 passes through the adjustment block 41 and is threadedly connected thereto, and two arc rods 42 are fixedly installed on the left end of the top plate 39, and the arc rods 42 are located at the bottom opening of the material box 3;

[0046] During operation, when it is necessary to reduce the thickness of the stem fragments scattered in the field, it is only necessary to rotate the threaded rod 40. The rotation of the threaded rod 40 drives the adjustment block 41 and the top plate 39 to slide downward through the action of the thread, thereby reducing the space between the top plate 39 and the conveyor belt 33, so that the scattered material is reduced; the top plate 39 moves downward, driving the arc rod 42 to move downward, and when the telescopic plate 38 at the top moves to the right, the top end of the telescopic plate 38 is guided by the arc rod 42, so that it is slowly retracted into the inner side of the telescopic box 37, thereby realizing the control of the entire length between the telescopic box 37 and the telescopic plate 38, which provides convenience for the downward movement of the top plate 39.

Claims

1. A stalk crushing assembly, comprising a harvester body (1) and a crushing box (2), characterized in that: The crushing box (2) is installed on the right side of the harvester body (1); a material box (3) is fixedly installed at the bottom end of the crushing box (2); two opening and closing plates (4) are arranged in the middle of the material box (3) through a weighing mechanism; the weighing mechanism is used to drive the opening and closing plates (4) to flip downward when a certain amount of material is accumulated on the top of the opening and closing plates (4); a mixing mechanism is arranged on the lower side of the opening and closing plates (4); the mixing mechanism is used to mix a certain amount of composting agent into the fallen crushed material; a spreading box (5) is installed at the bottom end of the material box (3); an adaptive spreading mechanism is arranged at the bottom opening of the spreading box (5); the adaptive spreading mechanism is used to self-adjust the spreading speed according to the moving speed of the harvester body (1) and arbitrarily control the spreading thickness; The weighing mechanism comprises a mounting frame (6) slidably connected to the inner side of the material box (3); a rotating shaft (7) is fixedly mounted on both front and rear ends of the side of the two opening and closing plates (4) that are away from each other; the ends of the rotating shaft (7) pass through the mounting frame (6) and are rotatably connected thereto; two guide frames (8) are fixedly mounted on the bottom of the left end of the mounting frame (6); two support frames (9) are fixedly mounted on the left end of the material box (3); the bottom ends of the support frames (9) pass through the guide frames (8) and are slidably connected thereto; the guide frames (8) are fixedly mounted on the bottom of the left end of the material box (3); the bottom ends of the support frames (9) pass through the guide frames (8) and are slidably connected thereto; The top of the left end of the frame (8) is connected to the top of the support frame (9) through a tension spring, and the rotating shafts (7) at the rear ends of the two opening and closing plates (4) are connected through a reversing mechanism, and the reversing mechanism is used to make the two opening and closing plates (4) turn in opposite directions. The front end of the installation frame (6) is provided with a turning mechanism, and the turning mechanism is used to drive the two opening and closing plates (4) to turn downward when the installation frame (6) can no longer move downward, and drive the two opening and closing plates (4) to return to their original positions synchronously when the installation frame (6) returns to its original position upward; The reversing mechanism comprises a rotating rod (10) rotatably connected to the rear side of the left end of the mounting frame (6); a first gear (11) is fixedly installed on the outer side of the rotating rod (10); a rear end of the rotating shaft (7) at the rear side of the left end passes through the material box (3) and is fixedly installed with a second gear (12); the first gear (11) and the second gear (12) are meshed with each other; a rear end of the rotating shaft (7) at the rear side of the right end passes through the material box (3) and is connected to the rotating rod (10) via a first transmission belt (13); The flip mechanism comprises a limit ring (14) fixedly mounted on the front right end of the mounting frame (6), an insert rod (15) is slidably connected to the inner side of the limit ring (14), a baffle plate (16) is fixedly mounted on the top end of the insert rod (15), a disc (17) is fixedly mounted on the front end of the rotating shaft (7) at the front right end, a slot (18) is provided at the top end of the disc (17), the bottom end of the insert rod (15) passes through the slot (18) and is slidably connected thereto, a baffle rod (19) is fixedly mounted on the front right end of the material box (3), the baffle rod (19) corresponds to the right end of the baffle plate (16), a first gear ring (20) is rotatably connected to the outer side of the rotating shaft (7) at the rear right end through a one-way bearing, a first rack (21) is fixedly mounted on the rear right end of the material box (3), and the first rack (21) is meshed with the right end of the first gear ring (20); The mixing mechanism comprises a fertilizer box (22) fixedly mounted on the left end of the material box (3); a connecting pipe (23) is fixedly mounted on the bottom of the right end of the fertilizer box (22); the left end opening of the connecting pipe (23) is connected to the fertilizer box (22), and the right end opening is connected to the material box (3); the left end of the connecting pipe (23) is cylindrical, and the inner side thereof is rotatably connected to a driving rod (24); a plurality of material shifting plates (25) are fixedly mounted on the outer side of the driving rod (24); the material shifting plates (25) are in contact with the inner wall of the connecting pipe (23); the front end of the driving rod (24) passes through the connecting pipe (23) and is provided with a transmission mechanism, and the transmission mechanism is used to drive the driving rod (24) to rotate when the mounting frame (6) can no longer move downward; an electric stirring rod (26) is mounted on the inner side of the material box (3); The transmission mechanism comprises a support block (27) fixedly mounted on the front side of the left end of the connecting pipe (23); a second rack (28) is slidably connected to the inner side of the support block (27); the top end of the second rack (28) is connected to the top end of the support block (27) via a compression spring; the outer side of the driving rod (24) is rotatably connected to a second gear ring (29) via a one-way bearing; the left side of the second gear ring (29) is meshed with the second rack (28); a pressure rod (30) is fixedly mounted on the front side of the bottom end of the second rack (28); a pressure plate (31) is fixedly mounted on the left end of the front guide frame (8); the left end of the pressure plate (31) corresponds to the pressure rod (30).

2. A rapeseed combine harvester, suitable for the stalk crushing assembly according to claim 1, characterized in that: The adaptive material spreading mechanism comprises two transmission shafts (32) rotatably connected to the inner side of the material spreading box (5), the two transmission shafts (32) are connected via a conveyor belt (33), the front and rear ends of the two transmission shafts (32) pass through the material spreading box (5) and are connected via a second transmission belt (34), the front and rear ends of the material spreading box (5) are rotatably connected to walking wheels (35), and the front and rear ends of the material spreading box (5) are rotatably connected to friction wheels (43), and the bottom ends of the friction wheels (43) are connected to the material spreading box (5). The walking wheels (35) are fitted together, the front and rear ends of the left transmission shaft (32) are connected to the friction wheel (43) through a third transmission belt (36), a plurality of telescopic boxes (37) are evenly fixedly installed on the surface of the conveyor belt (33), and the inner sides of the telescopic boxes (37) are slidably connected with telescopic plates (38) through compression springs. The top of the right end of the material spreading box (5) is provided with a top plate (39) through an adjusting mechanism, and the adjusting mechanism is used to freely control the thickness of the material spread by controlling the height of the top plate (39).

3. A rapeseed combine harvester according to claim 2, characterized in that: The adjustment mechanism comprises a threaded rod (40) rotatably connected to the right side of the bottom end of the material box (3); the left end of the top plate (39) is slidably connected to the material box (3); an adjustment block (41) is fixedly installed on the top end of the top plate (39); the bottom end of the threaded rod (40) passes through the adjustment block (41) and is threadedly connected thereto; two arc-shaped rods (42) are fixedly installed on the left end of the top plate (39); the arc-shaped rods (42) are located at the bottom opening of the material box (3).

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