Seeding depth adjusting structure of agricultural machine

Abstract

The invention relates to the technical field of agricultural machinery seeding, and discloses an agricultural machinery seeding depth adjusting structure which comprises a seeding assembly, the seeding assembly comprises a rotary cultivator, the top of the rotary cultivator is fixedly connected with a mounting plate, and the top of the mounting plate is fixedly connected with a motor. The motor drives the seeding pipes to integrally reciprocate up and down through the rotating shaft, the seeding pipes enter soil when moving downwards, and in the process that the seeding pipes integrally move to the specified depth and then move upwards, seeds can be left in the land through the tamping assembly and the blocking assembly, so that the seeding work is completed; the depth of the seeding pipe entering the land can be adjusted by unscrewing a threaded rod and adjusting the position of a sliding rod I on a rotating rod, so that the seeding depth can be adjusted, the transverse seeding spacing can be controlled by controlling the rotating speed of a motor, and the seeding pipes are in threaded connection with a lifting plate, so that the seeding pipes can be mounted at intervals; further, the longitudinal seeding spacing is controlled.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery sowing, and in particular to a sowing depth adjustment structure of an agricultural machinery. Background Art

[0002] Agricultural machinery seeding devices are an important part of modern agricultural mechanization. With the scale and specialization of agricultural production, accurate seeding depth plays a key role in crop growth and yield. Traditional seeding methods are difficult to meet the needs of different soil conditions and crops, which can easily lead to uneven seeding and affect seed germination rate. In order to improve seeding accuracy, researchers have developed a variety of depth adjustment devices, including mechanical, hydraulic and electronic control adjustment systems. The application of these technologies enables agricultural machinery to achieve precise seeding in various environments, thereby improving agricultural production efficiency and sustainable development.

[0003] When sowing seeds through agricultural machinery sowing devices, fixed spacing is usually set to ensure uniform growth of crops. However, since different seed varieties have different growth characteristics and requirements, the sowing spacing they require also varies. Some seeds require smaller spacing to facilitate their growth with each other, while some seeds require wider spacing to ensure that the plants have enough growth space and light. In response to the above problems, the following solutions are proposed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a sowing depth adjustment structure for agricultural machinery, including a sowing assembly, the sowing assembly includes a rotary tiller, a mounting plate is fixedly connected to the top of the rotary tiller, and a motor is fixedly connected to the top of the mounting plate;

[0005] A compacting assembly, the compacting assembly comprises a lifting plate arranged on the left side of the rotary tiller, a pressure rod is slidably connected to the inner wall of the lifting plate, and a spring 1 is fixedly connected to the bottom of the pressure rod;

[0006] The blocking component comprises a lower drill bit arranged below the jacking plate, a fixing rod is fixedly connected to the top of the lower drill bit, and a spring seven is sleeved on the outer surface of the fixing rod.

[0007] Preferably, the output ends on both sides of the front and back of the motor are fixedly connected to a rotating shaft, the outer surface of the rotating shaft is fixedly connected to a rotating rod, the outer surface of the rotating rod is slidably connected to a sliding rod 1, the inner wall of the sliding rod 1 is threadedly connected to a threaded rod, the outer surface of the sliding rod 1 is rotatably connected to a connecting rod, the inner wall of the connecting rod is rotatably connected to a lifting rod, the outer surface of the lifting rod is slidably connected to a fixed plate, the top of the fixed plate is fixedly connected to the bottom of the mounting plate, and the bottom of the lifting rod is fixedly connected to the lifting plate. When sowing, the device is driven by an agricultural machine to move on the land to be sown, and the rotary tiller and the motor are started at the same time. The rotary tiller will loosen the soil, the motor will drive the rotating rod to rotate through the rotating shaft, and the rotating rod will drive the connecting rod to rotate through the sliding rod 1. When the connecting rod rotates, it will drive the lifting rod limited by the fixed plate to reciprocate up and down.

[0008] Preferably, a sowing tube is threadedly connected to the inner wall of the lifting plate, a cover plate is fixedly connected to the top of the lifting plate, a material guide hose is fixedly connected to the top of the cover plate, a material placing trough is fixedly connected to the top of the material placing trough, the top of the material placing trough is fixedly connected to the bottom of the mounting plate, two sliding covers are slidably connected to the inner wall of the material placing trough, a leveling harrow is rotatably connected to the inner wall of the mounting plate, and the lifting rod drives a plurality of sowing tubes to reciprocate up and down as a whole through the lifting plate during the movement process. The sowing tube enters the soil when moving downward, and in the process of the sowing tube moving upward after moving to a specified depth as a whole, the seeds can be left in the soil through the tamping assembly and the blocking assembly, thereby completing the sowing. The sowing depth can be adjusted by loosening the threaded rod and adjusting the position of the sliding rod on the rotating rod, thereby adjusting the depth of the sowing tube entering the soil. After the adjustment, the threaded rod can be tightened, and the threaded rod will be in close contact with the outer surface of the rotating rod, and the sliding rod can be fixed in the adjusted position through the rotating rod. The lateral spacing of sowing can be controlled by controlling the rotation speed of the motor. Since the sowing tube and the lifting plate are threadedly connected, the sowing tubes can be installed at intervals to control the longitudinal spacing of sowing. This design can independently adjust the sowing depth and the sowing spacing, thereby using different growth conditions of different seeds.

[0009] Preferably, the outer surface of the pressure rod is slidably connected to the inner wall of the lifting plate, the bottom of the spring one is fixedly connected to the inner wall of the lifting plate, the inner wall of the lifting plate is slidably connected to the outer surface of the sowing tube, the top of the lifting plate is fixedly connected with an air guide hose, the outer wall of the air guide hose is fixedly connected with a branch pipe one, one end of the top of the branch pipe one is fixedly connected to the bottom of the feeding trough, the inner wall of the feeding trough is slidably connected with a shielding plate, and the right side of the shielding plate is fixedly connected with a spring two. After the sowing tube moves downward a certain distance in the soil, the lifting plate will also contact the soil surface. As the lifting plate continues to move downward, the lifting plate will be lifted up by the soil. In the process of the lifting plate moving upward, it will drive the pressure rod to move upward together through the spring one. The sliding distance of the pressure rod in the lifting plate is the minimum depth that the device can sow. During the movement, the pressure rod will compress the air in the lifting plate and push the air into the air guide hose. When the depth required for sowing is greater than the minimum depth The air in the air guide hose will be passed into the branch pipe 1, and the branch pipe 1 will pass the air into the interior of the material placing trough. The air passed into the interior of the material placing trough will push the shielding plate to the left to block the material guide hose, thereby preventing the seeds in the material placing trough from giving too much gravity to the seeds in the lower material guide hose and the sowing tube, causing subsequent seeds to fall too much. This design can give the land a reaction force during the process of the lifting plate being lifted upward by the land, thereby compacting the sowing position with a smaller force, and with the increase of the sowing depth, the degree of compression of the spring 1 will be higher, the compaction force will be greater, the compacted soil surface will be tighter, which can reduce water evaporation, keep the soil moist, and provide a better environment to promote seed germination and root growth.

[0010] Preferably, the right side of spring two is fixedly connected to the inner wall of the feeding trough, the left end of branch pipe one is fixedly connected to the outer surface of the material guiding hose, the inner wall of the material guiding hose is fixedly connected with branch pipe two, branch pipe two is fixedly connected to a fixed baffle at the end away from branch pipe one, the outer wall of the fixed baffle is fixedly connected to the inner wall of the cover plate, the inner wall of the fixed baffle is slidably connected with sliding rod two, the outer wall of sliding rod two is fixedly connected with spring three, the bottom of spring three is fixedly connected to the inner wall of the fixed baffle, and the inner wall of sliding rod two is slidably connected with four blocks. During the above process, the seeds poured into the feeding trough will enter the interior of the sowing tube through the material guiding hose and be blocked by the shielding sleeve one and the bottom of the fixed baffle, while branch pipe one will also let air pass into branch pipe two.

[0011] Preferably, the four blocks are fixedly connected with springs 4 on the sides close to each other, and the springs 4 are fixedly connected with the inner wall of the sliding rod 2 at one end away from the blocks. The inner wall of the sowing tube is slidably connected with a shielding sleeve 1, and the inner wall of the shielding sleeve 1 is slidably connected with the fixed baffle frame and the outer wall of the sliding rod 2 respectively. The bottom of the shielding sleeve 1 is fixedly connected with a spring 5, and the bottom of the spring 5 is fixedly connected with the inner wall of the sowing tube. The air passed into the branch pipe 2 will pass the air into the interior of the fixed baffle frame. Since the elastic coefficient of the spring 3 is greater than the elastic coefficient of the spring 4, the air will first enter the interior of the sliding rod 2 to push the block After the block is pushed outward and the spring four is stretched, the sliding rod two is pushed downward and the spring three is compressed. The sliding rod two will drive the card block one to move together with it during the downward movement. Since the card block has been extended into the interior of the shielding sleeve one at this time, the card block will drive the shielding sleeve one to move together with it and compress the spring five when the shielding sleeve one moves downward with the sliding rod two. After the shielding sleeve one moves downward, the seeds can fall from between the shielding sleeve one and the fixed blocking frame. It should be noted that the bottom of the sliding rod two is designed as a cross, and the seeds can fall from the gap of the cross, which will not hinder the falling of the seeds.

[0012] Preferably, a shielding sleeve 2 is in contact with the top of the sowing tube, and the outer surface of the shielding sleeve 2 is slidably connected to the inner wall of the lifting plate. A spring 6 is sleeved on the outer surface of the shielding sleeve 2, and the top of the spring 6 is fixedly connected to the bottom of the cover plate, and the bottom of the spring 6 is fixedly connected to the outer wall of the shielding sleeve 2. When the sowing tube is taken out from the lifting plate, the sowing tube can be rotated to make the sowing tube gradually move down from the lifting plate. During the downward movement of the lifting plate, the shielding sleeve 2 will move downward together with the top of the sowing tube due to the action of the spring 6, and then after the sowing tube is completely taken out, the shielding sleeve 2 will replace the position of the shielding sleeve 1 to shield the seeds and prevent seed leakage. This design can achieve the blocking effect of the shielding sleeve 1, so that during the downward movement of the sowing tube, only a part of the seeds can enter the lower part of the sowing tube through the shielding sleeve 1 and the fixed blocking frame during the time when the lifting plate is lifted upward, thereby preventing excessive sowing.

[0013] Preferably, the inner wall of the lower drill bit is slidably connected to the outer surface of the sowing tube, the inner wall of the lifting plate is slidably connected to the outer surface of the lower drill bit, the outer surface of the fixing rod is slidably connected to the inner wall of the sowing tube, the top of the spring seven is fixedly connected to the outer wall of the fixing rod, the bottom of the spring seven is fixedly connected to the inner wall of the sowing tube, the inner wall of the lower drill bit is fixedly connected with a fixing ring, the top of the fixing ring is fixedly connected with a blocking block, the bottom of the sowing tube is fixedly connected with a blocking frame, the inner wall of the fixing ring is slidably connected to the outer wall of the blocking frame, and the inner wall of the fixing ring is slidably connected to the outer wall of the blocking frame. In the process of the sowing tube moving downward, it will also drive the lower drill bit to move downward. When the lower drill bit moves down to the deepest depth and starts to move up, the lower drill bit will move downward due to the sudden upward acceleration and the gravity and friction of the upper and surrounding soil. In the process of moving downward, the lower drill bit will drive the fixing rod to move together and Compression spring seven, the seeds that fall to the lower side of the sowing tube in the above process will fall on the top of the blocking block, and the lower drill bit will drive the blocking block to move downward through the fixing ring when moving downward, so that the seeds can fall into the lower drill bit through the gap between the blocking block and the inner wall of the sowing tube. Since the blocking frame will no longer block the seed outlet at the bottom of the lower drill bit after the lower drill bit moves downward, the fallen seeds will eventually be discharged from the gap between the inner wall of the lower drill bit and the outer wall of the blocking frame, thereby completing the sowing. As the agricultural machine moves, the leveling harrow will be driven to level the land to prevent the surrounding soil from supplementing the holes drilled by the sowing tube. This design can prevent the soil from entering the lower drill bit and the interior of the sowing tube when the lower drill bit moves downward with the sowing tube, blocking the channel for the movement of the seeds, resulting in the inability to discharge the seeds normally.

[0014] The present invention has the following beneficial effects:

[0015] (1) When sowing, the present invention drives the device to move on the land to be sown through an agricultural machine, and starts the rotary tiller and the motor at the same time. The rotary tiller loosens the land, and the motor drives the rotating rod to rotate through the rotating shaft. The rotating rod drives the connecting rod to rotate through the sliding rod. When the connecting rod rotates, it drives the lifting rod limited by the fixed plate to reciprocate up and down. During the movement, the lifting rod drives a plurality of sowing tubes to reciprocate up and down as a whole through the lifting plate. When the sowing tube moves downward, it enters the soil. When the sowing tube moves upward after moving to the specified depth as a whole, the seeds can be left in the soil through the compacting component and the blocking component. The sowing work can be completed, and the position of the sliding rod 1 on the rotating rod can be adjusted by loosening the threaded rod, thereby adjusting the depth of the sowing tube entering the soil, so as to adjust the sowing depth. After the adjustment, the threaded rod can be tightened, and the threaded rod will be in close contact with the outer surface of the rotating rod, and the sliding rod 1 can be fixed in the adjusted position through the rotating rod. The horizontal spacing of sowing can be controlled by controlling the rotation speed of the motor, and since the sowing tube and the lifting plate are threadedly connected, the sowing tube can be installed at intervals to control the longitudinal spacing of sowing. This design can independently adjust the sowing depth and the sowing spacing, thereby using different growth conditions of different seeds.

[0016] (2) In the present invention, after the sowing tube moves downward a certain distance in the soil, the lifting plate will also contact the soil surface. As the lifting plate continues to move downward, the lifting plate will be lifted up by the soil. During the upward movement of the lifting plate, the pressure rod will move upward together with it through the spring. The distance that the pressure rod slides in the lifting plate is the minimum sowing depth of the device. During the movement, the pressure rod will compress the air in the lifting plate and push the air into the air guide hose. When the sowing depth required is greater than the minimum depth, that is, the top of the pressure rod contacts the inner wall of the lifting plate and cannot move any further, the lifting plate will compress the spring so that it can continue to move upward, and the air pushed into the air guide hose will be passed into the support In the tube one, the branch tube one will pass air into the interior of the feeding trough, and the air passed into the interior of the feeding trough will push the baffle plate to the left to block the feeding hose, preventing the seeds in the feeding trough from giving too much gravity to the seeds in the lower feeding hose and the sowing tube, causing subsequent seeds to fall too much. This design can give the land a reaction force in the process of the lifting plate being lifted upward by the land, and then compact the sowing position with a smaller force. As the sowing depth increases, the degree of compression of the spring one becomes higher, and the compaction force becomes greater. The compacted soil surface is tighter, which can reduce water evaporation, keep the soil moist, and provide a better environment to promote seed germination and root growth.

[0017] (3) The seeds poured into the material trough of the present invention will enter the interior of the sowing tube through the material guide hose and be blocked by the shielding sleeve 1 and the bottom of the fixed baffle frame. The branch pipe 1 will also pass air into the branch pipe 2. The air passed into the branch pipe 2 will pass air into the interior of the fixed baffle frame. Since the elastic coefficient of the spring 3 is greater than the elastic coefficient of the spring 4, the air will first enter the interior of the sliding rod 2 to push the block outward and stretch the spring 4, and then push the sliding rod 2 downward and compress the spring 3. The sliding rod 2 will drive the block 1 to move together during the downward movement. Since the block has extended into the interior of the shielding sleeve 1 at this time, the block will drive the shielding sleeve 1 to move together and compress the spring 5 when the sliding rod 2 moves downward. After the shielding sleeve 1 moves downward, the seeds can be It should be noted that the bottom of the sliding rod 2 is a cross design, and the seeds can fall from the gap of the cross, which will not hinder the falling of the seeds. When the sowing tube is taken out from the lifting plate, the sowing tube can be rotated to make the sowing tube gradually move down from the lifting plate. In the process of the lifting plate moving down, the shielding sleeve 2 will move downward along the top of the sowing tube due to the action of the spring 6, and then after the sowing tube is completely taken out, the shielding sleeve 2 will replace the position of the shielding sleeve 1 to shield the seeds and prevent seed leakage. This design can use the blocking effect of the shielding sleeve 1, so that in the process of the sowing tube moving downward, only a part of the seeds can enter the lower part of the sowing tube through the shielding sleeve 1 and the fixed shielding frame during the time when the lifting plate is lifted up, so as to prevent excessive sowing.

[0018] (4) In the process of the seeding tube moving downward, the present invention also drives the lower drill bit to move downward. When the lower drill bit moves to the deepest depth and starts to move upward, the lower drill bit will move downward due to the sudden upward acceleration and the gravity and friction of the upper and surrounding soil. In the process of the lower drill bit moving downward, the fixing rod will be driven to move and the spring 7 will be compressed. In the above process, the seeds falling to the lower side of the seeding tube will fall on the top of the shielding block. When the lower drill bit moves downward, it will drive the shielding block to move downward through the fixing ring, so that the seeds can pass through the shielding block. This design prevents soil from entering the lower drill bit and the inside of the sowing tube when the lower drill bit moves downward along with the sowing tube, thereby blocking the channel for the movement of seeds and causing the seeds to be unable to be discharged normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of the mounting plate of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall structure of the lifting plate of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal cross-sectional structure of the jacking plate of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal cross-sectional structure of the material trough of the present invention;

[0025] Figure 6 For the present invention Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0026] Figure 7 This is a schematic diagram of the overall structure of the sowing tube of the present invention;

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure of B;

[0028] Fig. 9 For the present invention Figure 7 Schematic diagram of the enlarged structure of C in the figure.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] In the figure: 1. sowing assembly; 101. rotary tiller; 102. mounting plate; 103. motor; 104. rotating shaft; 105. rotating rod; 106. sliding rod 1; 107. threaded rod; 108. connecting rod; 109. lifting rod; 110. fixing plate; 111. lifting plate; 112. sowing tube; 113. cover plate; 114. material guide hose; 115. material trough; 116. sliding cover; 117. leveling harrow; 2. compacting assembly; 201. lifting plate; 202. spring 1; 203. pressure Rod; 204, air guide hose; 205, branch pipe one; 206, baffle plate; 207, spring two; 208, branch pipe two; 209, fixed baffle frame; 210, sliding rod two; 211, spring three; 212, block; 213, spring four; 214, baffle sleeve one; 215, spring five; 216, baffle sleeve two; 217, spring six; 3, blocking assembly; 301, lower drill bit; 302, fixed rod; 303, spring seven; 304, fixed ring; 305, baffle block; 306, blocking frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] For example, see Figure 1-Figure 4 The present invention is a sowing depth adjustment structure for agricultural machinery, comprising a sowing assembly 1, wherein the sowing assembly 1 comprises a rotary tiller 101, a mounting plate 102 is fixedly connected to the top of the rotary tiller 101, and a motor 103 is fixedly connected to the top of the mounting plate 102;

[0033] The compacting assembly 2 includes a lifting plate 201 disposed on the left side of the rotary tiller 101, a pressure rod 203 is slidably connected to the inner wall of the lifting plate 201, and a spring 202 is fixedly connected to the bottom of the pressure rod 203;

[0034] The blocking assembly 3 includes a lower drill bit 301 arranged below the jacking plate 201, a fixing rod 302 is fixedly connected to the top of the lower drill bit 301, and a spring 303 is sleeved on the outer surface of the fixing rod 302.

[0035] The output ends on both sides of the front and back of the motor 103 are fixedly connected to a rotating shaft 104, the outer surface of the rotating shaft 104 is fixedly connected to a rotating rod 105, the outer surface of the rotating rod 105 is slidably connected to a sliding rod 106, the inner wall of the sliding rod 106 is threadedly connected to a threaded rod 107, the outer surface of the sliding rod 106 is rotatably connected to a connecting rod 108, the inner wall of the connecting rod 108 is rotatably connected to a lifting rod 109, the outer surface of the lifting rod 109 is slidably connected to a fixed plate 110, the top of the fixed plate 110 is fixedly connected to the bottom of the mounting plate 102, A lifting plate 111 is fixedly connected to the bottom of the lifting rod 109. When sowing, the device is driven by an agricultural machine to move on the land where sowing is required, and the rotary tiller 101 and the motor 103 are started at the same time. The rotary tiller 101 will loosen the land, and the motor 103 will drive the rotating rod 105 to rotate through the rotating shaft 104. The rotating rod 105 will drive the connecting rod 108 to rotate through the sliding rod 106. When the connecting rod 108 rotates, it will drive the lifting rod 109 limited by the fixed plate 110 to reciprocate up and down.

[0036] The inner wall of the lifting plate 111 is threadedly connected with a sowing tube 112, the top of the lifting plate 111 is fixedly connected with a cover plate 113, the top of the cover plate 113 is fixedly connected with a material guide hose 114, the top of the material guide hose 114 is fixedly connected with a material placement trough 115, the top of the material placement trough 115 is fixedly connected to the bottom of the mounting plate 102, the inner wall of the material placement trough 115 is slidably connected with two sliding covers 116, the inner wall of the mounting plate 102 is rotatably connected with a leveling rake 117, and the lifting rod 109 drives a plurality of sowing tubes 112 to reciprocate up and down as a whole through the lifting plate 111 during the movement process, and the sowing tube 112 enters the soil when moving downward, and in the process of the sowing tube 112 moving upward after moving to a specified depth as a whole, the seeds can be left in the soil through the tamping component 2 and the blocking component 3 The sowing work can be completed, and the position of the sliding rod 106 on the rotating rod 105 can be adjusted by loosening the threaded rod 107, thereby adjusting the depth of the sowing tube 112 entering the soil, so as to adjust the sowing depth. After the adjustment is completed, the threaded rod 107 can be tightened, and the threaded rod 107 will be in close contact with the outer surface of the rotating rod 105. The sliding rod 106 is fixed at the adjusted position through the rotating rod 105. The horizontal spacing of sowing can be controlled by controlling the rotation speed of the motor 103. Since the sowing tube 112 and the lifting plate 111 are threadedly connected, the sowing tube 112 can be installed at intervals to control the longitudinal spacing of sowing. This design can independently adjust the sowing depth and the sowing spacing, thereby adapting to different growth conditions of different seeds.

[0037] For example 2, please refer to Figure 5-Figure 9The present invention is a sowing depth adjustment structure for agricultural machinery. On the basis of the first embodiment, the outer surface of the pressure rod 203 is slidably connected to the inner wall of the lifting plate 111, the bottom of the spring 1 202 is fixedly connected to the inner wall of the lifting plate 201, the inner wall of the lifting plate 201 is slidably connected to the outer surface of the sowing tube 112, the top of the lifting plate 111 is fixedly connected to an air guide hose 204, the outer wall of the air guide hose 204 is fixedly connected to a branch pipe 1 205, one end of the top of the branch pipe 1 205 is fixedly connected to the bottom of the material placing trough 115, and the inner wall of the material placing trough 115 is slidably connected to a shielding plate 206 to shield A spring 207 is fixedly connected to the right side of the plate 206. After the sowing tube 112 moves downward a certain distance in the soil, the lifting plate 201 will also contact the soil surface. As the lifting plate 111 continues to move downward, the lifting plate 201 will be lifted up by the soil. During the upward movement of the lifting plate 201, it will drive the pressure rod 203 to move upward through the spring 1 202. The sliding distance of the pressure rod 203 in the lifting plate 111 is the minimum sowing depth of the device. The pressure rod 203 will compress the air in the lifting plate 111 during the movement. The air is pushed into the air guide hose 204. When the required sowing depth is greater than the minimum depth, that is, the top of the pressure rod 203 contacts the inner wall of the lifting plate 111 and cannot move any further, the lifting plate 201 will compress the spring 1 202 so that it can continue to move upward, and the air pushed into the air guide hose 204 will be passed into the branch pipe 1 205, and the branch pipe 1 205 will pass the air into the interior of the feeding trough 115. The air passed into the interior of the feeding trough 115 will push the shielding plate 206 to the left to block the material guide hose 114, preventing the feeding trough 115 from being blocked. The seeds give too much gravity to the seeds in the lower material guide hose 114 and the sowing tube 112, causing too much subsequent seeds to fall. This design can give the ground a reaction force when the lifting plate 201 is lifted upward by the ground, thereby compacting the sowing position with a smaller force. As the sowing depth increases, the degree of compression of the spring 1 202 becomes higher, and the compaction force becomes greater. The compacted soil surface is tighter, which can reduce water evaporation, keep the soil moist, and provide a better environment to promote seed germination and root growth.

[0038] The right side of spring 207 is fixedly connected to the inner wall of the material placing trough 115, and one end of the left side of branch pipe 1 205 is fixedly connected to the outer surface of material guiding hose 114. The inner wall of material guiding hose 114 is fixedly connected with branch pipe 208. Branch pipe 208 is fixedly connected with a fixed baffle 209 at the end away from branch pipe 1 205. The outer wall of fixed baffle 209 is fixedly connected to the inner wall of cover plate 113. The inner wall of fixed baffle 209 is slidably connected with sliding rod 210. The outer wall of sliding rod 210 is fixedly connected with spring 3 211. The bottom of spring 3 211 is fixedly connected to the inner wall of fixed baffle 209. The inner wall of sliding rod 210 is slidably connected with four blocks 212. In the above process, the seeds poured into the material placing trough 115 will enter the interior of sowing tube 112 through material guiding hose 114, and will be blocked by shielding sleeve 1 214 and the bottom of fixed baffle 209, while branch pipe 1 205 will also let air into branch pipe 2 208.

[0039] The four blocks 212 are fixedly connected with springs 4 213 on the sides close to each other, and the springs 4 213 are fixedly connected with the inner wall of the sliding rod 210 at the end away from the blocks 212. The inner wall of the sowing tube 112 is slidably connected with a shielding sleeve 1 214, and the inner wall of the shielding sleeve 1 214 is slidably connected with the outer wall of the fixed baffle 209 and the sliding rod 210 respectively. The bottom of the shielding sleeve 1 214 is fixedly connected with a spring 5 215, and the bottom of the spring 5 215 is fixedly connected with the inner wall of the sowing tube 112. The air passed into the branch pipe 208 will pass the air into the interior of the fixed baffle 209. Since the elastic coefficient of the spring 3 211 is greater than the elastic coefficient of the spring 4 213, the air will first enter the interior of the sliding rod 210. After pushing the block 212 outward and stretching the spring four 213, the sliding rod two 210 is pushed downward and the spring three 211 is compressed. The sliding rod two 210 will drive the block 212 to move together with it during the downward movement. Since the block 212 has extended into the interior of the shielding sleeve one 214 at this time, the block 212 will drive the shielding sleeve one 214 to move together with it and compress the spring five 215 when the shielding sleeve one 214 moves downward with the sliding rod two 210. After the shielding sleeve one 214 moves downward, the seeds can fall from between the shielding sleeve one 214 and the fixed blocking frame 209. It should be noted that the bottom of the sliding rod two 210 is designed as a cross, and the seeds can fall from the gap of the cross, which will not hinder the falling of the seeds.

[0040] The top of the sowing tube 112 contacts with a shielding sleeve 216, the outer surface of the shielding sleeve 216 is slidably connected to the inner wall of the lifting plate 111, and the outer surface of the shielding sleeve 216 is sleeved with a spring 6 217, the top of the spring 6 217 is fixedly connected to the bottom of the cover plate 113, and the bottom of the spring 6 217 is fixedly connected to the outer wall of the shielding sleeve 216. When the sowing tube 112 is taken out from the lifting plate 111, the sowing tube 112 can be rotated to gradually move down from the lifting plate 111. In the process of the lifting plate 111 moving down, the shielding sleeve 216 will be moved by the spring 6 Due to the action of spring six 217, the shielding sleeve 216 moves downward along the top of the sowing tube 112, and after the sowing tube 112 is completely taken out, the shielding sleeve 216 will replace the shielding sleeve 1 214 to shield the seeds and prevent seed leakage. This design can use the blocking effect of the shielding sleeve 214 to ensure that during the downward movement of the sowing tube 112, only a part of the seeds can enter the lower part of the sowing tube 112 through the shielding sleeve 1 214 and the fixed blocking frame 209 during the time when the lifting plate 201 is lifted upward, thereby preventing excessive sowing.

[0041] The inner wall of the lower drill bit 301 is slidably connected to the outer surface of the sowing tube 112, the inner wall of the lifting plate 201 is slidably connected to the outer surface of the lower drill bit 301, the outer surface of the fixing rod 302 is slidably connected to the inner wall of the sowing tube 112, the top of the spring 303 is fixedly connected to the outer wall of the fixing rod 302, the bottom of the spring 303 is fixedly connected to the inner wall of the sowing tube 112, the inner wall of the lower drill bit 301 is fixedly connected to a fixing ring 304, the top of the fixing ring 304 is fixedly connected to a blocking block 305, and the bottom of the sowing tube 112 is fixedly connected to the outer wall of the fixing rod 302. The plugging frame 306 is fixedly connected, and the inner wall of the fixing ring 304 is slidably connected to the outer wall of the plugging frame 306. When the sowing tube 112 moves downward, it will also drive the lower drill bit 301 to move downward. When the lower drill bit 301 moves down to the deepest depth and starts to move upward, the lower drill bit 301 will move downward due to the sudden upward acceleration and the gravity and friction of the upper and surrounding soil. In the process of moving downward, the lower drill bit 301 will drive the fixing rod 302 to move upward. The seeds that fall to the lower side of the sowing tube 112 in the above process will fall on the top of the shielding block 305, and the lower drill bit 301 will drive the shielding block 305 to move downward through the fixing ring 304 when moving downward, so that the seeds can fall into the lower drill bit 301 through the gap between the shielding block 305 and the inner wall of the sowing tube 112. After the lower drill bit 301 moves downward, the blocking frame 306 will no longer block the seed outlet at the bottom of the lower drill bit 301. Therefore, the fallen seeds will eventually be discharged from the gap between the inner wall of the lower drill bit 301 and the outer wall of the blocking frame 306, thereby completing the sowing. As the agricultural machine moves, the leveling harrow 117 will be driven to level the land to prevent the surrounding soil from filling the holes drilled by the sowing tube 112. This design prevents the soil from entering the lower drill bit 301 and the sowing tube 112 when the lower drill bit 301 moves downward with the sowing tube 112, thereby blocking the channel for the movement of the seeds and causing the seeds to be unable to be discharged normally.

[0042] A specific application of this embodiment is:

[0043] When using the device, the device is installed on the traction frame behind the agricultural machine, and smaller seeds are poured into the feeding trough 115. When sowing, the device is driven by the agricultural machine to move on the land to be sown, and the rotary tiller 101 and the motor 103 are started at the same time. The rotary tiller 101 will loosen the land, and the motor 103 will drive the rotating rod 105 to rotate through the rotating shaft 104. The rotating rod 105 will drive the connecting rod 108 to rotate through the sliding rod 106. When the connecting rod 108 rotates, it will drive the lifting rod 109 limited by the fixed plate 110 to reciprocate up and down. During the movement, the lifting rod 109 will drive a plurality of sowing tubes 112 to reciprocate up and down as a whole through the lifting plate 111. The sowing tube 112 will enter the soil when moving downward, and move upward after the sowing tube 112 moves to a specified depth as a whole. During the process, the seeds can be left in the soil by the tamping component 2 and the blocking component 3, thereby completing the sowing work, and the position of the sliding rod 106 on the rotating rod 105 can be adjusted by loosening the threaded rod 107, thereby adjusting the depth of the sowing tube 112 entering the soil, so as to adjust the sowing depth. After the adjustment is completed, the threaded rod 107 can be tightened, and the threaded rod 107 will be in close contact with the outer surface of the rotating rod 105, and the sliding rod 106 can be fixed in the adjusted position by the rotating rod 105. The horizontal spacing of sowing can be controlled by controlling the rotation speed of the motor 103, and since the sowing tube 112 and the lifting plate 111 are threadedly connected, the sowing tube 112 can be installed at intervals to control the longitudinal spacing of sowing. This design can adjust the sowing depth while adjusting the sowing spacing, thereby using different growth conditions of different seeds;

[0044] After the sowing tube 112 moves downward a certain distance in the soil, the lifting plate 201 will also contact the soil surface. As the lifting plate 111 continues to move downward, the lifting plate 201 will be lifted up by the soil. During the upward movement of the lifting plate 201, it will drive the pressure rod 203 to move upward together through the spring 1 202. The sliding distance of the pressure rod 203 in the lifting plate 111 is the minimum sowing depth of the device. During the movement, the pressure rod 203 will compress the air in the lifting plate 111 and push the air into the air guide hose 204. When the sowing depth required is greater than the minimum depth, that is, the top of the pressure rod 203 contacts the inner wall of the lifting plate 111 and cannot move any further, the lifting plate 201 will compress the spring 1 202 so that it can continue to move upward, and the air pushed into the air guide hose 204 The air in the feeding trough 115 will push the shielding plate 206 to the left to block the feeding hose 114, so as to prevent the seeds in the feeding trough 115 from giving too much gravity to the seeds in the lower feeding hose 114 and the sowing tube 112, so that the subsequent seeds fall too much. This design can give the land a reaction force in the process of the lifting plate 201 being lifted upward by the land, and then compact the sowing position with less force. With the increase of the sowing depth, the degree of compression of the spring 202 is higher, and the compaction force is greater. The compacted soil surface is more compact, which can reduce the evaporation of water, keep the soil moist, and provide a better environment to promote the germination of seeds and the growth of roots.

[0045] During the above process, the seeds poured into the feeding trough 115 will enter the interior of the sowing tube 112 through the guiding hose 114 and be blocked by the shielding sleeve 1 214 and the bottom of the fixed baffle 209, and the branch pipe 1 205 will also pass air into the branch pipe 2 208, and the air passed into the branch pipe 208 will pass air into the interior of the fixed baffle 209. Since the elastic coefficient of the spring 3 211 is greater than the elastic coefficient of the spring 4 213, the air will first enter the interior of the sliding rod 210 to block the block 2 After the sliding rod 210 is pushed outward and the spring 4 213 is stretched, the sliding rod 210 is pushed downward and the spring 3 211 is compressed. The sliding rod 210 will drive the block 212 to move together with it during the downward movement. Since the block 212 has extended into the interior of the shielding sleeve 1 214 at this time, the block 212 will drive the shielding sleeve 1 214 to move together with it and compress the spring 5 215 when the sliding rod 210 moves downward. After the shielding sleeve 1 214 moves downward, the seeds can be removed from the shielding sleeve 1 The seeding tube 112 is preferably a seeding tube 112, and the seeding tube 112 is preferably a seeding tube 112. The seeding tube 112 is preferably a seeding tube 112 that ... The shielding sleeve 214 and the fixed baffle 209 are moved downward together, and after the sowing tube 112 is completely taken out, the shielding sleeve 216 will replace the shielding sleeve 1 214 to shield the seeds and prevent the seeds from leaking. This design can prevent the sowing tube 112 from being sown too much by blocking the shielding sleeve 214.

[0046] When the sowing tube 112 moves downward, it will also drive the lower drill bit 301 to move downward. When the lower drill bit 301 moves down to the deepest depth and starts to move upward, the lower drill bit 301 will move downward due to the sudden upward acceleration and the gravity and friction of the upper and surrounding soil. When the lower drill bit 301 moves downward, it will drive the fixing rod 302 to move and compress the spring 7 303. In the above process, the seeds that fall to the lower side of the sowing tube 112 will fall on the top of the shielding block 305, and when the lower drill bit 301 moves downward, it will drive the shielding block 305 to move downward through the fixing ring 304, so that the seeds can pass through the shielding block 305 and the sowing tube. The seeds fall into the gap between the inner walls of the seed tube 112, and because the blocking frame 306 will no longer block the seed outlet at the bottom of the lower drill bit 301 after the lower drill bit 301 moves downward, the fallen seeds will eventually be discharged from the gap between the inner wall of the lower drill bit 301 and the outer wall of the blocking frame 306, thereby completing the sowing. As the agricultural machine moves, the leveling harrow 117 will be driven to level the land to prevent the surrounding soil from filling the holes drilled by the sowing tube 112. This design prevents soil from entering the lower drill bit 301 and the sowing tube 112 when the lower drill bit 301 moves downward with the sowing tube 112, thereby blocking the channel for the movement of seeds and causing the seeds to be unable to be discharged normally.

[0047] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sowing depth adjustment structure for agricultural machinery, comprising a sowing assembly (1), wherein the sowing assembly (1) comprises a rotary tiller (101), a mounting plate (102) is fixedly connected to the top of the rotary tiller (101), and a motor (103) is fixedly connected to the top of the mounting plate (102), wherein: Also includes: A compacting assembly (2), the compacting assembly (2) comprising a lifting plate (201) arranged on the left side of the rotary tiller (101), a pressure rod (203) being slidably connected to the inner wall of the lifting plate (201), and a spring 1 (202) being fixedly connected to the bottom of the pressure rod (203); A blocking assembly (3), the blocking assembly (3) comprising a lower drill bit (301) arranged below the jacking plate (201), the top of the lower drill bit (301) being fixedly connected to a fixing rod (302), and the outer surface of the fixing rod (302) being sleeved with a spring seven (303).

2. The agricultural machinery sowing depth adjustment structure according to claim 1, characterized in that: The output ends on both the front and back sides of the motor (103) are fixedly connected to a rotating shaft (104); the outer surface of the rotating shaft (104) is fixedly connected to a rotating rod (105); the outer surface of the rotating rod (105) is slidably connected to a sliding rod (106); the inner wall of the sliding rod (106) is threadedly connected to a threaded rod (107); the outer surface of the sliding rod (106) is rotatably connected to a connecting rod (108); the inner wall of the connecting rod (108) is rotatably connected to a lifting rod (109); the outer surface of the lifting rod (109) is slidably connected to a fixed plate (110); the top of the fixed plate (110) is fixedly connected to the bottom of the mounting plate (102); and the bottom of the lifting rod (109) is fixedly connected to a lifting plate (111).

3. The agricultural machinery sowing depth adjustment structure according to claim 2 is characterized in that: The inner wall of the lifting plate (111) is threadedly connected with a sowing tube (112); the top of the lifting plate (111) is fixedly connected with a cover plate (113); the top of the cover plate (113) is fixedly connected with a material guide hose (114); the top of the material guide hose (114) is fixedly connected with a material placement trough (115); the top of the material placement trough (115) is fixedly connected to the bottom of the mounting plate (102); the inner wall of the material placement trough (115) is slidably connected with two sliding covers (116); and the inner wall of the mounting plate (102) is rotatably connected with a leveling rake (117).

4. The agricultural machinery sowing depth adjustment structure according to claim 3 is characterized in that: The outer surface of the pressure rod (203) is slidably connected to the inner wall of the lifting plate (111), the bottom of the spring 1 (202) is fixedly connected to the inner wall of the lifting plate (201), the inner wall of the lifting plate (201) is slidably connected to the outer surface of the sowing tube (112), the top of the lifting plate (111) is fixedly connected to an air guide hose (204), the outer wall of the air guide hose (204) is fixedly connected to a branch pipe 1 (205), one end of the top of the branch pipe 1 (205) is fixedly connected to the bottom of the material placing trough (115), the inner wall of the material placing trough (115) is slidably connected to a shielding plate (206), and the right side of the shielding plate (206) is fixedly connected to a spring 2 (207).

5. The agricultural machinery sowing depth adjustment structure according to claim 4, characterized in that: The right side of the second spring (207) is fixedly connected to the inner wall of the material placing trough (115), the left end of the first branch pipe (205) is fixedly connected to the outer surface of the material guiding hose (114), the inner wall of the material guiding hose (114) is fixedly connected with the second branch pipe (208), the end of the second branch pipe (208) away from the first branch pipe (205) is fixedly connected with a fixed baffle (209), the outer wall of the fixed baffle (209) is fixedly connected to the inner wall of the cover plate (113), the inner wall of the fixed baffle (209) is slidably connected with the second sliding rod (210), the outer wall of the second sliding rod (210) is fixedly connected with the third spring (211), the bottom of the third spring (211) is fixedly connected to the inner wall of the fixed baffle (209), and the inner wall of the second sliding rod (210) is slidably connected with four blocks (212).

6. The agricultural machinery sowing depth adjustment structure according to claim 5, characterized in that: The four blocks (212) are fixedly connected to springs four (213) on the sides close to each other, and the spring four (213) is fixedly connected to the inner wall of the sliding rod two (210) at the end away from the block (212). The inner wall of the sowing tube (112) is slidably connected to a shielding sleeve one (214), and the inner wall of the shielding sleeve one (214) is slidably connected to the outer wall of the fixed blocking frame (209) and the sliding rod two (210), respectively. The bottom of the shielding sleeve one (214) is fixedly connected to a spring five (215), and the bottom of the spring five (215) is fixedly connected to the inner wall of the sowing tube (112).

7. The agricultural machinery sowing depth adjustment structure according to claim 6, characterized in that: The top of the sowing tube (112) contacts with a shielding sleeve 2 (216), the outer surface of the shielding sleeve 2 (216) is slidably connected to the inner wall of the lifting plate (111), the outer surface of the shielding sleeve 2 (216) is sleeved with a spring 6 (217), the top of the spring 6 (217) is fixedly connected to the bottom of the cover plate (113), and the bottom of the spring 6 (217) is fixedly connected to the outer wall of the shielding sleeve 2 (216).

8. The agricultural machinery sowing depth adjustment structure according to claim 7, characterized in that: The inner wall of the lower drill bit (301) is slidably connected to the outer surface of the sowing tube (112); the inner wall of the lifting plate (201) is slidably connected to the outer surface of the lower drill bit (301); the outer surface of the fixing rod (302) is slidably connected to the inner wall of the sowing tube (112); the top of the spring seven (303) is fixedly connected to the outer wall of the fixing rod (302); the bottom of the spring seven (303) is fixedly connected to the inner wall of the sowing tube (112); the inner wall of the lower drill bit (301) is fixedly connected to a fixing ring (304); the top of the fixing ring (304) is fixedly connected to a blocking block (305); the bottom of the sowing tube (112) is fixedly connected to a blocking frame (306); the inner wall of the fixing ring (304) is slidably connected to the outer wall of the blocking frame (306).

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