Fertilization triggering device of rice side deep fertilizer applicator

Abstract

The invention relates to the technical field of rice side deep fertilizer applicator fertilization, and discloses a rice side deep fertilizer applicator fertilization triggering device which comprises a triggering upper rod fixedly connected to a rack, the triggering upper rod is an upper support of a whole triggering structure, an upper shaft connecting frame is fixedly connected to the triggering upper rod, and a rotating shaft and a rotating rod are rotationally connected to the upper shaft connecting frame; the rotating rod and the rotating shaft are rotatably connected with a lower shaft connecting frame, the rotating rod penetrates through the upper shaft connecting frame, the rotating shaft and the lower shaft connecting frame, the lower shaft connecting frame is fixedly connected with a trigger lower rod, the trigger lower rod is fixedly connected with a supporting frame, the supporting frame is fixedly connected with a contact, and the supporting frame is made of a high-strength metal material; when the semicircular contact is in contact with the ground of the rice field, the fertilization component is accurately driven to act by triggering linkage of the lower rod, the connecting rod, the rack and the gear, so that fertilization and rice transplanting actions are highly synchronous, fertilizer waste is reduced, and uniform and consistent fertilization depth is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of fertilization of a rice side deep fertilizer applicator, and in particular relates to a fertilization trigger device of a rice side deep fertilizer applicator. Background Art

[0002] The rice side deep fertilization technology is the core technology in rice planting. Its core lies in accurately applying fertilizer to the soil below the side of the seedlings during the transplanting process. This can not only improve the fertilizer utilization rate and help the rice roots absorb nutrients efficiently, but also reduce the non-point source pollution caused by fertilizer loss with soil and water. However, the technical solutions of existing fertilizer spreaders have significant defects.

[0003] First of all, most fertilizer spreaders rely on motor-driven electronic control systems. In the harsh, damp and muddy environment of rice fields, electronic control components are easily affected by water vapor penetration and mud adhesion, causing circuit short circuits, component corrosion and other faults, resulting in low equipment reliability, frequent maintenance interruptions to operating processes, and increased operation and maintenance costs.

[0004] Secondly, it is difficult to accurately control the synchronization between fertilization and transplanting. The existing control method is restricted by factors such as signal transmission delay and actuator response differences, and often leads to deviations in fertilization timing. For example, fertilization before transplanting causes fertilizer displacement, or fertilization after transplanting causes fertilizer to fail to reach the designated position, which not only causes fertilizer waste, but also affects the consistency of rice growth due to uneven fertilization depth and position, reducing yield and quality.

[0005] Furthermore, some traditional mechanical trigger devices have complex structures and contain a large number of precisely matched parts. When working in rice fields, foreign objects such as soil and rice stubble can easily penetrate the gaps in the device, causing the mechanical parts to jam and become blocked, resulting in failure of the trigger function. The complex structure also makes cleaning and maintenance more difficult, making it difficult to meet the requirements of long-term, high-intensity field operations.

[0006] In summary, the development of a mechanical trigger device with a simple structure, outstanding resistance to field environmental interference, and precise linkage with the transplanting action has become a key direction to solve the existing problems of side deep fertilization of rice and improve the accuracy of fertilization operations and the stability of equipment. It is of great significance to promote efficient rice cultivation. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a fertilization triggering device for a rice side deep fertilizer applicator that can overcome the above problems or at least partially solve the above problems.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is: a fertilization trigger device of a rice side deep fertilizer spreader, including a frame, and also including: a trigger upper rod fixedly connected to the frame, the trigger upper rod is the upper support of the entire trigger structure, an upper shaft connecting frame is fixedly connected to the trigger upper rod, a rotating shaft and a rotating rod are rotatably connected to the upper shaft connecting frame, a lower shaft connecting frame is rotatably connected to the rotating rod and the rotating shaft, the rotating rod passes through the upper shaft connecting frame, the rotating shaft and the lower shaft connecting frame, a trigger lower rod is fixedly connected to the lower shaft connecting frame, a support frame is fixedly connected to the trigger lower rod, a contact is fixedly connected to the support frame, the support frame is made of high-strength metal material, and is used for firmly installing a semicircular contact, the contact is semicircular, and is used to trigger the fertilization action more smoothly when it contacts the ground of the rice field.

[0009] As a further improvement of the above scheme, an adjustment block is fixedly connected to the trigger upper rod, an adjustment slot is provided on the adjustment block, an adjustment screw is slidably connected to the adjustment slot, a threaded hole corresponding to the adjustment screw is provided on the trigger lower rod, and one end of the adjustment screw close to the trigger lower rod is threadedly connected to the trigger lower rod. The position and angle of the trigger lower rod can be adjusted by manually twisting the adjustment screw to make it slide in the adjustment slot and screw in or out of the trigger lower rod.

[0010] As a further improvement of the above solution, the sliding angle of the trigger lower rod and the adjusting screw on the adjusting groove is 15° to 45°, which is used to accurately adjust the position of the trigger component according to different rice field conditions and fertilization requirements to adapt to different working environments.

[0011] As a further improvement of the above solution, a return spring is provided between the frame and the upper connecting rod, and the frame and the upper connecting rod are connected by the return spring, so as to trigger the rotation of the lower rod connected to the upper connecting rod.

[0012] As a further improvement of the above scheme, an upper connecting rod is rotatably connected to the trigger lower rod, and a reset spring is fixedly connected to the upper connecting rod. When the trigger lower rod is triggered by an external force to generate displacement, the reset spring is stretched or compressed to store elastic potential energy. After the external force disappears, the reset spring releases the potential energy and drives the trigger lower rod to reset through the upper connecting rod. To ensure that the trigger device can return to the initial position in time for the next trigger, the reset spring is fixedly installed on the frame by bolts, and at the same time, the side of the trigger lower rod is rotatably connected to the upper connecting rod through a pin shaft, and the upper connecting rod is connected to the reset spring. When the trigger lower rod is triggered by an external force to generate displacement, the reset spring is stretched or compressed to store elastic potential energy. After the external force disappears, the reset spring releases the potential energy and drives the trigger lower rod to reset through the upper connecting rod. The upper connecting rod is connected to the lower connecting rod by a ball head, and the ball head can rotate flexibly in multiple directions. A rack is installed on the fixed block fixed at the end of the lower connecting rod. This reset structure connected with multiple connecting rods and the ball head not only ensures the stability of the reset, but also can adapt to the reset requirements of the trigger lower rod at different angles and positions, thereby enhancing the versatility and reliability of the device.

[0013] As a further improvement of the above solution, the upper connecting rod is rotatably connected to a ball head, the ball head is rotatably connected to a lower connecting rod, the lower connecting rod is fixedly connected to a fixed block, and the fixed block is fixedly connected to a rack.

[0014] As a further improvement of the above scheme, the central shaft is rotated by gear transmission. The central shaft is located inside the valve body and is fixed with an anti-blocking stirring rod. Its shape is spiral or has multiple blades. When the central shaft rotates, the anti-blocking stirring rod stirs the fertilizer in the valve body to prevent the fertilizer from clumping and clogging, thereby ensuring smooth fertilization.

[0015] As a further improvement of the above scheme, an anti-blocking stirring rod is fixedly connected to the central shaft, and the anti-blocking stirring rod is arranged inside the valve body. When the trigger structure drives the rack to move, the central shaft rotates through gear transmission. The central shaft is located inside the valve body and the anti-blocking stirring rod is fixed thereon. When the central shaft rotates, the anti-blocking stirring rod stirs the fertilizer in the valve body.

[0016] As a further improvement of the above scheme, an outer shell is fixedly connected to the material box, a hard material pipe is fixedly connected to the outer shell, a mudguard is fixedly connected to the hard material pipe, a connecting bracket is fixedly connected to the mudguard, a trenching wheel is fixedly connected to the connecting bracket, and a connecting shaft is rotatably connected to the trenching wheel. The outer shell fixed on the material box plays a role in protecting the internal structure and fertilizer. The hard material pipe connected to the outer shell is used to guide the fertilizer transportation. The mudguard installed on the hard material pipe can prevent the splash of soil in the paddy field and protect the equipment. The mudguard fixes the trenching wheel through the connecting frame, and the trenching wheel rotates through the connecting shaft. Two groups of trenching wheels are arranged on the connecting frame, which are fitted close to the contact end and opened away from the contact end. This design can open a suitable groove in the rice field, which is convenient for the fertilizer spreader to accurately apply fertilizer to the side of the groove, improve the fertilization effect, and at the same time ensure the stability and adaptability of the trenching wheel during the movement.

[0017] As a further improvement of the above solution, two groups of grooving wheels are provided on the connecting bracket, and the two groups of connecting brackets are fitted together at one end close to the contact and are in an open state at the other end away from the contact.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: 1. The present invention innovatively uses a semicircular contact to contact the ground of the rice field, which triggers the linkage of the lower rod, connecting rod, rack and gear to accurately drive the fertilization component to move, so that the fertilization and transplanting actions are highly synchronized, reducing fertilizer waste and ensuring uniform fertilization depth.

[0019] 2. The present invention innovatively utilizes the anti-blocking stirring rod on the central axis to rotate with the gear transmission to continuously stir the fertilizer in the valve body to avoid fertilizer agglomeration and blockage. Compared with the traditional complex mechanical trigger device, it has a simpler structure and stronger ability to resist soil blockage.

[0020] The two sets of furrowing wheels are in an open state to assist in furrowing in the rice fields and cooperate with the fertilization action to further optimize the effect of fertilizing into the soil, while reducing the impact of soil accumulation on the trigger device.

[0021] 3. The present invention innovatively uses an adjustment block, an adjustment slot and an adjustment screw to manually adjust the position and angle of the trigger lower rod by 15° to 45°, adapting to different paddy field soil conditions such as softness, flatness and fertilization requirements, thereby improving the operating flexibility of the device.

[0022] 4. In the present invention, the reset spring is linked with the upper connecting rod. After the lower rod is triggered to move by external force, the elastic potential energy stored in the spring is released when the force disappears, driving the trigger structure to automatically reset, thereby ensuring the stability and repeatability of the trigger action during continuous operation.

[0023] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The three-dimensional structure diagram of the fertilizer triggering device of the rice side deep fertilizer applicator proposed by the present invention Figure 1 ; Figure 2 The three-dimensional structure diagram of the fertilizer triggering device of the rice side deep fertilizer applicator proposed by the present invention Figure 2 ; Figure 3 The fertilization trigger device of the rice side deep fertilizer applicator proposed by the present invention Figure 2 Schematic diagram of the structure at A in FIG. Figure 4 The fertilization trigger device of the rice side deep fertilizer applicator proposed by the present invention Figure 2 Schematic diagram of the structure at B in FIG. Figure 5 This is a front structural schematic diagram of the fertilizer triggering device of the rice side deep fertilizer applicator proposed by the present invention; Figure 6 This is a top view of the structural schematic diagram of the fertilizer triggering device of the rice side deep fertilizer applicator proposed by the present invention; Figure 7 This is a schematic structural diagram of the rear view of the fertilizer triggering device of the rice side deep fertilizer applicator proposed by the present invention.

[0025] In the figure: 1. frame; 2. trigger upper rod; 21. upper shaft connecting frame; 22. rotating shaft; 23. rotating rod; 24. lower shaft connecting frame; 25. trigger lower rod; 26. supporting frame; 27. contact; 3. adjusting block; 31. adjusting slot; 32. adjusting screw; 4. return spring; 5. upper connecting rod; 51. ball head; 52. lower connecting rod; 53. fixing block; 54. rack; 55. gear; 56. center shaft; 57. valve body; 58. anti-blocking stirring rod; 6. material box; 61. outer shell; 62. hard material pipe; 63. mud guard; 64. connecting bracket; 65. ditching wheel; 66. connecting shaft. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0027] The following is combined with Figure 1 -Attached Figure 7 , describes in detail the technical solutions provided by each embodiment of the present invention.

[0028] Example 1: Reference Figure 1-7 The fertilizer trigger device of the rice side deep fertilizer spreader includes a frame 1, and also includes: a trigger upper rod 2 fixedly connected to the frame 1, the trigger upper rod 2 is the upper support of the entire trigger structure, an upper shaft connecting frame 21 is fixedly connected to the trigger upper rod 2, a rotating shaft 22 and a rotating rod 23 are rotatably connected to the upper shaft connecting frame 21, a lower shaft connecting frame 24 is rotatably connected to the rotating rod 23 and the rotating shaft 22, the rotating rod 23 passes through the upper shaft connecting frame 21, the rotating shaft 22 and the lower shaft connecting frame 24, a trigger lower rod 25 is fixedly connected to the lower shaft connecting frame 24, a support frame 26 is fixedly connected to the trigger lower rod 25, a contact 27 is fixedly connected to the support frame 26, the support frame 26 is made of high-strength metal material, and is used for firmly installing a semicircular contact 27, the contact 27 is semicircular, and is used to trigger the fertilization action more smoothly when it contacts the ground of the rice field.

[0029] An adjusting block 3 is fixedly connected to the trigger upper rod 2, an adjusting slot 31 is provided on the adjusting block 3, an adjusting screw 32 is slidably connected to the adjusting slot 31, a threaded hole corresponding to the adjusting screw 32 is provided on the trigger lower rod 25, and one end of the adjusting screw 32 close to the trigger lower rod 25 is threadedly connected to the trigger lower rod 25. By manually twisting the adjusting screw 32 to make it slide in the adjusting slot 31 and screw in or out of the trigger lower rod 25, the position and angle of the trigger lower rod 25 can be adjusted.

[0030] The sliding angle of the trigger lower rod 25 and the adjusting screw 32 on the adjusting groove 31 is 15° to 45°, so as to accurately adjust the position of the trigger component according to different rice field conditions and fertilization requirements to adapt to different working environments.

[0031] A return spring 4 is provided between the frame 1 and the upper connecting rod 5 , and the frame 1 and the upper connecting rod 5 are connected by the return spring 4 , so that the lower rod 25 is triggered to rotate and is connected to the upper connecting rod 5 .

[0032] The trigger lower rod 25 is rotatably connected with the upper connecting rod 5. When the trigger lower rod 25 is triggered by an external force to generate displacement, the reset spring 4 is stretched or compressed to store elastic potential energy. After the external force disappears, the reset spring 4 releases the potential energy and drives the trigger lower rod 25 to reset through the upper connecting rod 5. In order to ensure that the trigger device can return to the initial position in time for the next trigger, the reset spring 4 is fixedly installed on the frame 1 by bolts, and at the same time, the side of the trigger lower rod 25 is rotatably connected to the upper connecting rod 5 through a pin shaft. The upper connecting rod 5 is connected to the reset spring 4. When the trigger lower rod 25 is triggered by an external force to generate displacement, the reset spring 4 is stretched or compressed to store elastic potential energy. After the external force disappears, the reset spring 4 releases the potential energy and drives the trigger lower rod 25 to reset through the upper connecting rod 5. In order to ensure that the trigger device can return to the initial position in time for the next trigger, the reset spring 4 is fixedly installed on the frame 1 by bolts. At the same time, the side of the trigger lower rod 25 is rotatably connected to the upper connecting rod 5 through a pin shaft. The upper connecting rod 5 is connected to the reset spring 4. When displacement occurs, the reset spring 4 is stretched or compressed to store elastic potential energy. After the external force disappears, the reset spring 4 releases the potential energy, and drives the trigger lower rod 25 to reset through the upper connecting rod 5. The upper connecting rod 5 is connected to the lower connecting rod 52 through a ball head 51, and the ball head 51 can rotate flexibly in multiple directions. A rack 54 is installed on the fixed block 53 fixed at the end of the lower connecting rod 52. This reset structure connected with the multi-link and ball head not only ensures the stability of the reset, but also can adapt to the reset requirements of the trigger lower rod 25 at different angles and positions, thereby enhancing the versatility and reliability of the device.

[0033] The upper connecting rod 5 is rotatably connected to a ball head 51, and the ball head 51 is rotatably connected to a lower connecting rod 52. A fixing block 53 is fixedly connected to the lower connecting rod 52, and a rack 54 is fixedly connected to the fixing block 53. A material box 6 is installed on one side of the frame 1 for storing fertilizer, and its bottom is connected to a valve body 57. The valve body 57 controls the outflow of fertilizer. The valve body 57 is rotatably connected to a central shaft 56 through a bearing. A gear 55 is fixed outside the central shaft 56, and the gear 55 is meshed with the rack 54. When the trigger structure moves to drive the rack 54 to move, the central shaft 56 is rotated through the gear 55. The central shaft 56 is located inside the valve body 57 and is fixed with an anti-blocking stirring rod 58, which is shaped like a spiral or has multiple blades. When the central shaft 56 rotates, the anti-blocking stirring rod 58 stirs the fertilizer in the valve body 57 to prevent the fertilizer from agglomerating and clogging, thereby ensuring smooth fertilization.

[0034] A material box 6 is fixedly connected to the frame 1 , a valve body 57 is fixedly connected to the material box 6 , a central shaft 56 is rotatably connected to the valve body 57 , a gear 55 is fixedly connected to the central shaft 56 , and a rack 54 is meshed with the gear 55 .

[0035] An anti-blocking stirring rod 58 is fixedly connected to the central shaft 56, and the anti-blocking stirring rod 58 is arranged inside the valve body 57. When the trigger structure moves to drive the rack 54 to move, the central shaft 56 is rotated through the gear 55. The central shaft 56 is located inside the valve body 57 and is fixed with the anti-blocking stirring rod 58. When the central shaft 56 rotates, the anti-blocking stirring rod 58 stirs the fertilizer in the valve body 57.

[0036] The material box 6 is fixedly connected with a shell 61, a hard material pipe 62 is fixedly connected with the shell 61, a fender 63 is fixedly connected with the hard material pipe 62, a connecting bracket 64 is fixedly connected with the fender 63, a ditching wheel 65 is fixedly connected with the connecting bracket 64, and a connecting shaft 66 is rotatably connected with the ditching wheel 65. The shell 61 fixed on the material box 6 plays a role in protecting the internal structure and fertilizer, and the hard material pipe 62 connected to the shell 61 is used to guide the fertilizer transportation. The mudguard 63 can prevent the splashing of mud in the paddy field and protect the equipment. The mudguard 63 fixes the trenching wheel 65 through the connecting frame 64. The trenching wheel 65 is rotated through the connecting shaft 66. Two groups of trenching wheels 65 are arranged on the connecting frame 64, which are fitted at one end close to the contact 27 and opened at one end away from the contact 27. This design can open a suitable groove in the paddy field, making it convenient for the fertilizer spreader to accurately apply fertilizer to the side of the groove, thereby improving the fertilization effect and ensuring the stability and adaptability of the trenching wheel during the movement.

[0037] Two groups of groove opening wheels 65 are provided on the connecting bracket 64 . The two groups of connecting brackets 64 are fitted together at one end close to the contact 27 and are in an open state at the other end away from the contact 27 .

[0038] Example 2: Reference Figure 1-7 The fertilizer trigger device of the rice side deep fertilizer spreader is basically the same as that of Example 1, and further: the frame 1 is a basic supporting structure, the trigger upper rod 2 is fixedly connected to the frame 1, and serves as the upper support of the trigger structure. The trigger upper rod 2 is fixedly connected to the upper shaft connecting frame 21, and the upper shaft connecting frame 21 is rotatably connected to the rotating shaft 22 and the rotating rod 23. The rotating rod 23 penetrates the upper shaft connecting frame 21 and the rotating shaft 22, and is rotatably connected to the lower shaft connecting frame 24. The lower shaft connecting frame 24 is fixedly connected to the trigger lower rod 25, and the trigger lower rod 25 is fixed with a semicircular contact 27 through a support frame 26. The support frame 26 is made of high-strength metal material to ensure that the contact 27 is firmly installed. The semicircular design makes the triggering smoother when the contact 27 contacts the ground of the rice field.

[0039] The trigger upper rod 2 is provided with an adjustment block 3, and the adjustment block 3 has an adjustment groove 31, and an adjustment screw 32 is slidably connected in the adjustment groove 31. The trigger lower rod 25 has a threaded hole corresponding to the adjustment screw 32, and one end of the adjustment screw 32 is threadedly connected to the trigger lower rod 25. The adjustment screw 32 is manually turned to slide in the adjustment groove 31 and screw in or out of the trigger lower rod 25, so as to adjust the position and angle of the trigger lower rod 25. The adjustment angle range is 15° to 45°, which can adapt to different rice field conditions and fertilization requirements.

[0040] The frame 1 is fixedly connected to the reset spring 4, which triggers the lower rod 25 to rotate and connect to the upper connecting rod 5. The upper connecting rod 5 fixes the reset spring 4. When the triggered lower rod 25 is triggered to move by an external force, the reset spring 4 is stretched or compressed to store elastic potential energy. After the external force disappears, the reset spring 4 releases the potential energy and drives the triggered lower rod 25 to reset through the upper connecting rod 5. The upper connecting rod 5 is rotated to connect to the ball head 51, and the ball head 51 is rotated to connect to the lower connecting rod 52. The lower connecting rod 52 is fixedly connected to the fixing block 53, and the fixing block 53 is connected to the rack 55.

[0041] The frame 1 fixes the material box 6, the material box 6 is connected to the valve body 57, the valve body 57 is rotatably connected to the central shaft 56, the central shaft 56 fixes the gear 55, the gear 55 is meshed with the rack 54, the central shaft 56 is located inside the valve body 57 to fix the anti-blocking stirring rod 58, when the trigger structure is activated, the rack 54 moves to drive the gear 55 to rotate, and the central shaft 56 rotates accordingly, and the anti-blocking stirring rod 58 stirs the fertilizer in the valve body 57 to prevent blockage.

[0042] The material box 6 fixes the outer shell 61, the outer shell 61 is connected to the hard material tube 62, the hard material tube 62 fixes the mudguard 63, the mudguard 63 fixes the ditching wheel 65 through the connecting bracket 64, the ditching wheel 65 is rotatably connected to the connecting shaft 66, and two groups of ditching wheels 65 are arranged, and the two groups of connecting brackets 64 are in a fit at one end close to the contact 27 and are in an open state at the end away from the contact 27, so as to assist in ditching the rice field and cooperate with the fertilization action.

[0043] Example 3: Reference Figure 1-7The fertilizer trigger device of the rice side deep fertilizer spreader is basically the same as that of Example 2, and further, the frame 1 of the fertilizer trigger device is firmly installed at the corresponding position of the rice side deep fertilizer spreader, the trigger upper rod 2 is fixedly connected to the frame 1, the upper shaft connecting frame 21 is rotatably connected to the rotating shaft 22 and the rotating rod 23, and then the lower shaft connecting frame 24 is rotatably connected to the rotating rod 23 and the rotating shaft 22, and then the trigger lower rod 25 is fixed to the lower shaft connecting frame 24, and a support frame 26 made of high-strength metal material is installed on the trigger lower rod 25, and a semicircular contact 27 is fixed on the support frame 26 so that the contact 27 can contact the ground of the rice field, and the adjusting block 3 is fixed to the trigger upper rod 2, and the adjusting screw 32 is connected to the contact The threaded holes on the trigger lower rod 25 are connected correspondingly and enable it to slide in the adjustment groove 31. The return spring 4 is installed at the appropriate position of the frame 1 or the trigger lower rod 25, and is rotatably connected to the trigger lower rod 25 through the upper connecting rod 5. At the same time, the ball head 51, the lower connecting rod 52, the fixing block 53 and the rack 54 are connected in sequence to fix the material box 6 on the frame 1. The valve body 57 is installed on the material box 6. The central shaft 56 is rotatably connected to the valve body 57. The gear 55 is fixed on the central shaft 56 and meshes with the rack 54. The anti-blocking stirring rod 58 is installed on the central shaft 56 and is located inside the valve body 57. The outer shell 61, the hard material pipe 62, the fender 63, the connecting bracket 64 and the ditching wheel 65 are installed so that the ditching wheel 65 can rotate normally to ditch.

[0044] Example 4: Reference Figure 1-7 The fertilizer triggering device of the rice side deep fertilizer spreader is basically the same as that of Example 3, and further, the operator starts the rice side deep fertilizer spreader, and the fertilizer spreader moves in the rice field. The ditching wheel 65 first opens a fertilizer ditch in the rice field. When the fertilizer spreader moves, the semicircular contact 27 contacts the ground of the rice field. If the ground is uneven or there are obstacles, the contact 27 is subjected to external force, which drives the trigger lower rod 25 to rotate a certain angle around the rotating shaft 22. The rotation of the trigger lower rod 25 causes the upper connecting rod 5 to pull the reset spring 4, and the spring is stretched to store elastic potential energy. At the same time, the upper connecting rod 5 drives the rack 54 to move through the ball head 51 and the lower connecting rod 52, and the rack 54 is engaged with the gear 55, driving the gear 55 to rotate, and the upper connecting rod 50 is driven to rotate. The central shaft 56 rotates. On the one hand, the rotation of the central shaft 56 opens the fertilizer application channel, so that the fertilizer is applied from the material box 6 into the opened groove through the valve body 57; on the other hand, the anti-blocking stirring rod 58 on the central shaft 56 stirs the fertilizer in the valve body 57 to prevent fertilizer blockage. When the fertilizer spreader continues to move, the external force on the contact 27 disappears, the reset spring 4 releases the elastic potential energy, and drives the trigger lower rod 25 to reset through the upper connecting rod 5 to prepare for the next trigger. If it is found that the fertilizer trigger position is inaccurate during the operation, the operator can manually turn the adjusting screw 32 to adjust the position and angle of the trigger lower rod 25 within the range of 15° to 45° according to the specific conditions of the rice field to meet different fertilization needs.

[0045] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A fertilization trigger device for a rice side deep fertilizer spreader, comprising a frame (1), characterized in that: Also includes: A trigger upper rod (2) is fixedly connected to the frame (1), the trigger upper rod (2) being the upper support of the entire trigger structure, the trigger upper rod (2) being fixedly connected to an upper shaft connecting frame (21), the upper shaft connecting frame (21) being rotatably connected to a rotating shaft (22) and a rotating rod (23), the rotating rod (23) and the rotating shaft (22) being rotatably connected to a lower shaft connecting frame (24), the rotating rod (23) passing through the upper shaft connecting frame (21), the rotating shaft (22) and the lower shaft connecting frame (24), the lower shaft connecting frame (24) being fixedly connected to a trigger lower rod (25), the trigger lower rod (25) being fixedly connected to a supporting frame (26), the supporting frame (26) being fixedly connected to a contact (27), the supporting frame (26) being made of a high-strength metal material and being used for stably mounting a semicircular contact (27), the contact (27) being semicircular and being used for more smoothly triggering a fertilization action when in contact with the ground of a paddy field.

2. The fertilization trigger device of the rice side deep fertilizer applicator according to claim 1, characterized in that: The trigger upper rod (2) is fixedly connected to an adjustment block (3), the adjustment block (3) is provided with an adjustment slot (31), an adjustment screw (32) is slidably connected to the adjustment slot (31), the trigger lower rod (25) is provided with a threaded hole corresponding to the adjustment screw (32), one end of the adjustment screw (32) close to the trigger lower rod (25) is threadedly connected to the trigger lower rod (25), and the adjustment screw (32) is manually screwed to slide in the adjustment slot (31) and screw in or out of the trigger lower rod (25), so that the position and angle of the trigger lower rod (25) can be adjusted.

3. The fertilization trigger device of the rice side deep fertilizer applicator according to claim 2, characterized in that: The sliding angle of the trigger lower rod (25) and the adjusting screw rod (32) on the adjusting groove (31) is 15° to 45°, so as to accurately adjust the position of the trigger component according to different rice field conditions and fertilization requirements, so as to adapt to different working environments.

4. The fertilization trigger device of the rice side deep fertilizer applicator according to claim 2, characterized in that: A return spring (4) is provided between the frame (1) and the upper connecting rod (5), and the frame (1) and the upper connecting rod (5) are connected via the return spring (4); the trigger lower rod (25) is rotatably connected to the upper connecting rod (5).

5. The fertilization triggering device of the rice side deep fertilizer applicator according to claim 2, characterized in that: When the trigger lower rod (25) is triggered by an external force to generate displacement, the reset spring (4) is stretched or compressed to store elastic potential energy; after the external force disappears, the reset spring (4) releases the potential energy and drives the trigger lower rod (25) to reset via the upper connecting rod (5).

6. The fertilization trigger device of the rice side deep fertilizer applicator according to claim 5, characterized in that: The upper connecting rod (5) is rotatably connected to a ball head (51), the ball head (51) is rotatably connected to a lower connecting rod (52), a fixing block (53) is fixedly connected to the lower connecting rod (52), and a rack (54) is fixedly connected to the fixing block (53).

7. The fertilizer triggering device for a rice side deep fertilizer applicator according to claim 1, characterized in that: A material box (6) is fixedly connected to the frame (1), a valve body (57) is fixedly connected to the material box (6), a central shaft (56) is rotatably connected to the valve body (57), a gear (55) is fixedly connected to the central shaft (56), and a rack (54) is meshed with the gear (55).

8. The fertilization triggering device of the rice side deep fertilizer applicator according to claim 7, characterized in that: An anti-blocking stirring rod (58) is fixedly connected to the central shaft (56), and the anti-blocking stirring rod (58) is arranged inside the valve body (57). When the trigger structure moves to drive the rack (54) to move, the central shaft (56) is rotated through the gear (55). The central shaft (56) is located inside the valve body (57) and is fixed with the anti-blocking stirring rod (58). When the central shaft (56) rotates, the anti-blocking stirring rod (58) stirs the fertilizer in the valve body (57).

9. The fertilizer triggering device for a rice side deep fertilizer applicator according to claim 7, characterized in that: The material box (6) is fixedly connected to a shell (61), the shell (61) is fixedly connected to a hard material pipe (62), the hard material pipe (62) is fixedly connected to a mudguard (63), the mudguard (63) is fixedly connected to a connecting bracket (64), the connecting bracket (64) is fixedly connected to a trenching wheel (65), and the trenching wheel (65) is rotatably connected to a connecting shaft (66).

10. The fertilizer triggering device of the rice side deep fertilizer applicator according to claim 9, characterized in that: Two groups of the groove opening wheels (65) are arranged on the connecting bracket (64); the two groups of the connecting brackets (64) are fitted together at one end close to the contact (27) and are in an open state at one end away from the contact (27).

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