Adjustable sowing device for wheat breeding

Abstract

The invention provides an adjustable sowing device for wheat breeding, and relates to the technical field of sowing equipment.The adjustable sowing device comprises a driving mechanism, the driving mechanism comprises a sowing support, a traction rod is fixedly installed at the front end of the sowing support, a plurality of sowing mechanisms are transversely and slidably installed in the sowing support, and each sowing mechanism comprises a second positioning supporting rod; a pair of driving gears is transversely and rotatably installed at the bottom of the second positioning supporting rod, adjusting sliding grooves are formed in the driving gears, third adjusting screw rods are rotatably installed in the adjusting sliding grooves of the driving gears in the radial direction, and a supporting sliding block is slidably installed between the two driving gears in the axial direction; the two ends of the supporting sliding block are in screw rod fit with the two third adjusting screw rods correspondingly. The sowing distance can be controlled in the sowing period through the driving gear; through cooperation of the hollow digging rod, the hollow mixing rod and the transmission roller, the sowing number of seeds in each hoeing pit can be adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of sowing equipment, and in particular to an adjustable sowing device for wheat breeding. Background Art

[0002] The main purpose of wheat breeding is to improve wheat's resistance to drought and pests, as well as to increase wheat crop yields, and to improve wheat's ability to adapt to the environment, so as to increase the range of wheat that can be planted.

[0003] During the wheat breeding and sowing process, it is necessary to add different amounts or types of pesticides or cultivation agents when sowing wheat according to the environmental adaptability of different wheat varieties to prevent the seeds from being infested by insects or failing to germinate smoothly due to lack of nutrition. It is difficult to ensure the accuracy of the amount of reagents through manual sowing. At the same time, due to fatigue problems, it is difficult to ensure the uniformity of the number and spacing of seeds during sowing, and it is difficult to judge the survival rate of the seeds.

[0004] Based on this, the present invention provides an adjustable sowing device for wheat breeding. Summary of the invention

[0005] In view of the above technical problems, the present invention provides an adjustable sowing device for wheat breeding, including a driving mechanism, the driving mechanism including a sowing bracket, a traction rod fixedly installed at the front end of the sowing bracket, a plurality of sowing mechanisms installed in a transverse sliding manner in the sowing bracket, the sowing mechanism including a second positioning support rod, a pair of driving gears installed in a transverse rotation at the bottom of the second positioning support rod, an adjusting slide groove is provided in the driving gear, a third adjusting screw is installed in the adjusting slide groove of the driving gear in a radial direction, a supporting slider is installed axially between the two driving gears, two ends of the supporting slider are respectively matched with two third adjusting screw lead rods, a main connecting rod is provided in the center of the supporting slider, a sowing transmission rod is hinged on the connecting rod in the center of the supporting slider, the longitudinal cross-section of the sowing transmission rod is a tuning fork-shaped structure, a secondary connecting rod is fixedly installed in the middle section of the sowing transmission rod, and a soil covering transmission rod is hinged on the secondary connecting rod in the sowing transmission rod.

[0006] Furthermore, a pair of rear support rods are fixedly installed at the bottom of the rear end of the sowing bracket, a first soil covering support rod is longitudinally slidably installed at the bottom of the rear support rod, a square support rod is transversely rotatably installed between the first soil covering support rods, a plurality of soil covering wheels are slidably installed on the square support rods, the soil covering wheels are of an hourglass-shaped structure, a soil pressing slider is slidably installed on the central outer wall of the soil covering wheel, and the soil pressing slider is hinged to the bottom of the soil covering transmission rod.

[0007] Furthermore, a pair of front support rods are fixedly installed at the bottom of the front end of the sowing bracket, a sliding support rod is longitudinally slidably installed between the front support rods, a compression spring is fixedly installed between the bottom of the sliding support rod and the sowing bracket, the sowing mechanism includes a hollow digging rod, the rear end of the hollow digging rod is slidably matched with the sliding support rod, a discharge trough is provided inside the hollow digging rod, the rear end of the hollow digging rod is hinged to the bottom of the sowing transmission rod, a hollow mixing rod is longitudinally slidably installed in the hollow digging rod, a tension spring is fixedly installed between the top of the hollow mixing rod and the hollow digging rod, a first positioning support rod is longitudinally slidably installed on the top of the hollow digging rod, a tension spring is fixedly installed between the inside of the first positioning support rod and the top of the hollow mixing rod, and the first positioning support rod is laterally slidably installed on the top of the sowing bracket.

[0008] Furthermore, the hollow mixing rod is provided with a plurality of mixing grooves inside, and a transmission roller is installed at the bottom of the mixing groove of the hollow mixing rod for transverse rotation. The transmission roller rolls with the inner wall of the discharge groove of the hollow excavating rod, and a plurality of material feeding grooves are provided on the transmission roller. The hollow excavating rod is provided with a plurality of medicine buffer grooves inside, and the number of the medicine buffer grooves is the same as the mixing grooves inside the hollow mixing rod, and the positions are higher than the corresponding transmission rollers. A plurality of medicine transmission pipes are fixedly installed at the rear end of the hollow excavating rod, and the number of the medicine transmission pipes is the same as the number of the medicine buffer grooves and they are connected to the corresponding medicine buffer grooves, and the other end of the medicine transmission pipe is connected to the external medicine storage bin.

[0009] Furthermore, a limiting groove is provided on the top of the hollow digging rod, a second adjusting motor is fixedly installed in the limiting groove of the hollow digging rod, an adjusting screw is fixedly installed on the top of the second adjusting motor, a limiting slider is assembled on the adjusting screw at the top of the second adjusting motor, a limiting key is fixedly installed on the top of the hollow mixing rod, and the top of the limiting key is in contact with the bottom of the limiting slider.

[0010] Furthermore, a seed groove and a seed transmission bin are fixedly installed at the front end of the first positioning support rod, a transmission slider is installed in the seed transmission bin for transverse sliding movement, a compression spring is fixedly installed between the front end of the transmission slider and the first positioning support rod, a feed trough is provided inside the transmission slider, a pair of limit sliders are fixedly installed on the top of the transmission slider, an inverted trapezoidal inclined surface is provided at the bottom of the rear end of the transmission slider, an inclined surface at the same angle is provided on the top of the hollow mixing rod, the bottom of the transmission slider and the inclined surface of the top of the hollow mixing rod are in contact and cooperate with each other, a U-shaped baffle is fixedly installed on the top of the hollow mixing rod, and the U-shaped baffle is slidably cooperated with the discharge trough in the transmission slider.

[0011] Furthermore, the feed trough in the transmission slider is connected to the top of the transmission slider, a discharge port is provided at the bottom of the seed trough, the discharge port at the bottom of the seed trough is connected to the feed trough at the top of the transmission slider, and the shift plate is slidably matched with the inner wall of the seed trough.

[0012] Furthermore, a bevel gear is provided at the bottom of the third adjusting screw, a third adjusting motor is fixedly installed at the center of the driving gear, a bevel gear is fixedly installed on the third adjusting motor, and the bevel gear at the bottom of the third adjusting screw is meshed with the bevel gear on the third adjusting motor.

[0013] Furthermore, a second soil covering support rod is fixedly installed at the rear end of the second positioning support rod, a soil covering sliding rod is longitudinally slidably installed in the second soil covering support rod, a positioning ring is provided at the bottom of the soil covering sliding rod, and the positioning ring at the bottom of the soil covering sliding rod rotates in cooperation with the soil covering wheel.

[0014] Furthermore, a first adjusting screw and a second adjusting screw are rotatably installed at the front and rear ends of the top of the sowing bracket, a pair of threads are provided in the middle section of the first adjusting screw, and a pair of threads are provided at both ends of the second adjusting screw. A plurality of second positioning support rods that slide laterally in the sowing bracket cooperate with the first adjusting screw and the second adjusting screw lead screw respectively, a pulley is fixedly installed at the same end of the first adjusting screw and the second adjusting screw, the first adjusting screw and the second adjusting screw are connected by a belt, a gear is fixedly installed at one end of the second adjusting screw, a first adjusting motor is fixedly installed on the sowing bracket, a gear is fixedly installed on the first adjusting motor, and the gear on the first adjusting motor is meshed with the gear on the second adjusting screw.

[0015] Furthermore, a transmission gear rod is installed on the top of the sowing bracket for transverse rotation, the transmission gear rod is meshed with the driving gear, gears and pulleys are fixedly installed on both ends of the transmission gear rod, a driving wheel is installed on the bottom of the front support rod for transverse rotation, a pulley is fixedly installed on the driving wheel, the driving wheel and the transmission gear rod are connected by a belt, a driving motor is fixedly installed on the top of the sowing bracket, a gear is fixedly installed on the driving motor, and the gear on the driving motor is meshed with the gear on the transmission gear rod.

[0016] Compared with the prior art, the present invention has the following advantages: (1) the present invention can control the sowing interval during sowing by driving the gear, so as to facilitate the differentiated planting of seeds containing different cultivation agents; (2) the present invention can adjust the number of seeds sown in each hoe hole by cooperating with the hollow digging rod, the hollow mixing rod and the transmission roller, so as to facilitate more intuitive detection of the survival rate of the seeds; (3) the present invention can wrap the pesticide or agent on the seed surface by cooperating with the transmission roller in the multiple mixing grooves in the hollow mixing rod, so as to improve the cultivation quality of wheat seeds. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the bottom structure of the present invention.

[0019] Figure 3 It is a schematic diagram of the overall top structure of the present invention.

[0020] Figure 4 It is a schematic diagram of the overall bottom structure of the present invention.

[0021] Figure 5 It is a schematic diagram of the overall assembly structure of the seeding mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the partial cutaway assembly structure of the seeding mechanism of the present invention.

[0023] Figure 7 It is a schematic diagram of the half-section structure of the hollow digging rod of the present invention.

[0024] Figure 8 It is a schematic diagram of the assembly structure of the soil covering wheel of the present invention.

[0025] Fig. 9 It is a schematic diagram of the overall structure of the transmission slider of the present invention.

[0026] Fig.10 It is a schematic diagram of the front structure of the hollow digging rod of the present invention.

[0027] Fig.11 for Figure 6 A1 is an enlarged schematic diagram of the structure.

[0028] Figure numerals: 1-driving mechanism; 2-seeding mechanism; 101-seeding bracket; 102-transmission gear rod; 103-traction rod; 104-first adjusting screw; 105-second adjusting screw; 106-first adjusting motor; 107-first soil covering support rod; 108-driving wheel; 109-soil covering wheel; 110-soil pressing slider; 111-driving motor; 112-sliding support rod; 113-square support rod; 114-rear support rod; 115-front support rod; 201-seed slot; 202-seed transmission bin; 203-first positioning support rod; 20 4-hollow digging rod; 205-transmission slider; 206-hollow mixing rod; 207-transmission roller; 208-U-shaped baffle; 209-medicine transmission pipeline; 210-second adjusting motor; 211-limiting slider; 212-second positioning support rod; 213-driving gear; 214-third adjusting motor; 215-third adjusting screw; 216-supporting slider; 217-seeding transmission rod; 218-soil covering transmission rod; 219-second soil covering support rod; 220-soil covering sliding rod; 221-paddle; 222-medicine buffer slot; 223-limit key. DETAILED DESCRIPTION

[0029] The technical solution provided by the present invention is further described below in conjunction with the accompanying drawings and according to specific implementation methods.

[0030] like Figures 1 to 11 As shown, an adjustable sowing device for wheat breeding comprises a driving mechanism 1, the driving mechanism 1 comprises a sowing support 101, a traction rod 103 is fixedly installed at the front end of the sowing support 101, a plurality of sowing mechanisms 2 are installed in a transverse sliding manner in the sowing support 101, the sowing mechanism 2 comprises a second positioning support rod 212, a pair of driving gears 213 are installed in a transverse rotation at the bottom of the second positioning support rod 212, an adjusting slide groove is provided in the driving gear 213, a third adjusting screw 215 is installed in a radial direction in the adjusting slide groove of the driving gear 213, a supporting slider 216 is installed axially and slidably between the two driving gears 213, the supporting slider 216 cooperates with the driving gear 213 to form an adjustable eccentric wheel for controlling the planting depth of wheat seeds, two ends of the supporting slider 216 cooperate with two third adjusting screws 215 respectively, a main connecting rod is provided in the center of the supporting slider 216, a sowing transmission rod 217 is hinged on the connecting rod in the center of the supporting slider 216, the longitudinal section of the sowing transmission rod 217 is a tuning fork-shaped structure, and the middle section of the sowing transmission rod 217 is fixedly installed There is a secondary connecting rod, a soil covering transmission rod 218 is hinged on the secondary connecting rod in the sowing transmission rod 217, a bevel gear is provided at the bottom of the third adjusting screw 215, a third adjusting motor 214 is fixedly installed at the center of the driving gear 213, a bevel gear is fixedly installed on the third adjusting motor 214, the bevel gear at the bottom of the third adjusting screw 215 is meshed with the bevel gear on the third adjusting motor 214, a pair of front support rods 115 are fixedly installed at the bottom of the front end of the sowing bracket 101, and a sliding support rod 112 is longitudinally slidably installed between the front support rods 115, A compression spring is fixedly installed between the bottom of the sliding support rod 112 and the sowing bracket 101. The sowing mechanism 2 includes a hollow digging rod 204. The rear end of the hollow digging rod 204 is hinged to the bottom of the sowing transmission rod 217. The hollow digging rod 204 is used to dig a planting hole in the ground before sowing. By starting the third adjusting motor 214 to drive the third adjusting screw 215 to rotate, the distance between the supporting slider 216 and the axis of the driving gear 213 can be adjusted, thereby adjusting the depth of the hole dug by the hollow digging rod 204, thereby changing the sowing depth according to demand.

[0031] like Figures 1 to 11As shown, the rear end of the hollow digging rod 204 is slidably matched with the sliding support rod 112, a discharge trough is provided inside the hollow digging rod 204, the rear end of the hollow digging rod 204 is hinged to the bottom of the sowing transmission rod 217, a hollow mixing rod 206 is longitudinally slidably installed in the hollow digging rod 204, a tension spring is fixedly installed between the top of the hollow mixing rod 206 and the hollow digging rod 204, a first positioning support rod 203 is longitudinally slidably installed on the top of the hollow digging rod 204, a tension spring is fixedly installed between the inside of the first positioning support rod 203 and the top of the hollow mixing rod 206, and the first positioning support rod 203 is longitudinally slidably installed. The support rod 203 is installed on the top of the sowing support 101 in a transverse sliding manner. A plurality of mixing grooves are arranged inside the hollow mixing rod 206 for mixing wheat seeds with breeding pesticides or reagents. The pesticides or reagents are wrapped on the outside of the seeds to improve the efficiency of experimental breeding. A transmission roller 207 is installed transversely and rotatably at the bottom of the mixing groove of the hollow mixing rod 206. The transmission roller 207 rolls with the inner wall of the discharge groove of the hollow digging rod 204. A plurality of feeding grooves are arranged on the transmission roller 207. The feeding grooves are used to hold wheat seeds and breeding agents, and are used to control the sowing amount of wheat seeds, so as to facilitate control. The number of seeds in each hoe hole is used to detect the survival rate of the seeds. A plurality of agent buffer grooves 222 are provided inside the hollow digging rod 204. The number of agent buffer grooves 222 is the same as the mixing grooves inside the hollow mixing rod 206. The position of the agent buffer groove 222 is higher than the corresponding transmission roller 207. When the hollow mixing rod 206 slides upward inside the hollow digging rod 204, the height of the transmission roller 207 is flush with the agent buffer groove 222. The agent in the agent buffer groove 222 enters the material dispensing groove on the transmission roller 207. When the hollow mixing rod 206 is inside the hollow digging rod 204, the agent in the agent buffer groove 222 enters the material dispensing groove on the transmission roller 207. When sliding downward, the transmission roller 207 is driven to rotate in the hollow mixing rod 206 through the rolling cooperation with the inner wall of the hollow digging rod 204, and the medicine or pesticide is poured into the mixing groove of the hollow mixing rod 206 to mix with the wheat seeds. A plurality of medicine transmission pipes 209 are fixedly installed at the rear end of the hollow digging rod 204. The number of medicine transmission pipes 209 is the same as that of the medicine buffer groove 222 and they are connected to the corresponding medicine buffer groove 222. The other end of the medicine transmission pipe 209 is connected to an external medicine storage bin for adding pesticides or reagents to the corresponding mixing groove.

[0032] like Figures 1 to 11As shown, a limit slide groove is provided on the top of the hollow digging rod 204, and a second adjusting motor 210 is fixedly installed in the limit slide groove of the hollow digging rod 204. An adjusting screw is fixedly installed on the top of the second adjusting motor 210. The upper screw of the adjusting screw on the top of the second adjusting motor 210 is equipped with a limit slider 211. A limit key 223 is fixedly installed on the top of the hollow mixing rod 206, and the top of the limit key 223 is in contact with the bottom of the limit slider 211. By starting the second adjusting motor 210 to drive the screw to rotate, the height of the limit slider 211 is adjusted to limit the sliding distance of the hollow mixing rod 206 in the hollow digging rod 204, and the rolling angle of the transmission roller 207 in the hollow mixing rod 206 is adjusted, thereby adjusting the number of seeds to be sown.

[0033] like Figures 1 to 11 As shown, a seed slot 201 and a seed transmission bin 202 are fixedly installed at the front end of the first positioning support rod 203, the seed slot 201 is used to store wheat seeds for cultivation, a transmission slider 205 is installed in the seed transmission bin 202 for horizontal sliding movement, a compression spring is fixedly installed between the front end of the transmission slider 205 and the first positioning support rod 203, a feed trough is arranged inside the transmission slider 205, a pair of limit sliders 211 are fixedly installed on the top of the transmission slider 205, an inverted trapezoidal inclined surface is arranged at the bottom of the rear end of the transmission slider 205, and an inclined surface at the same angle is arranged on the top of the hollow mixing rod 206, the bottom of the transmission slider 205 and the inclined surface at the top of the hollow mixing rod 206 are in contact with each other, and the transmission slider 205 is provided with a plurality of intermediate positions. The feed trough is connected to the transmission hole on the hollow mixing rod 206. A U-shaped baffle 208 is fixedly installed on the top of the hollow mixing rod 206. The U-shaped baffle 208 slides with the discharge trough in the transmission slider 205 to limit the transmission speed of the wheat seeds when they are transmitted from the transmission slider 205 to the inside of the hollow mixing rod 206. The feed trough in the transmission slider 205 is connected to the top of the transmission slider 205. A discharge port is provided at the bottom of the seed trough 201. The discharge port at the bottom of the seed trough 201 is connected to the feed trough at the top of the transmission slider 205. The paddle 221 slides with the inner wall of the seed trough 201. The paddle 221 is used to paddle the seeds in the seed trough 201 to prevent the seeds from accumulating on the inner wall of the seed trough 201.

[0034] like Figures 1 to 11As shown, a pair of rear support rods 114 are fixedly installed at the bottom of the rear end of the sowing support 101, and a first soil covering support rod 107 is longitudinally slidably installed at the bottom of the rear support rod 114. A square support rod 113 is rotatably installed between the first soil covering support rods 107, and a plurality of soil covering wheels 109 are slidably installed on the square support rods 113. The soil covering wheels 109 are hourglass-shaped structures. The soil covering wheels 109 are used to roll around the hoe pit to facilitate burying wheat seeds. A soil pressing slider 110 is slidably installed on the central outer wall of the soil covering wheel 109. The soil pressing slider 110 is used to assist the soil covering wheel 109 to restore the soil dug out by the hollow digging rod 204, and automatically bury the wheat seeds. For burying, the soil pressing slider 110 is hinged at the bottom of the soil covering transmission rod 218, which is used to drive the soil pressing slider 110 to slide back and forth on the soil covering wheel 109, and adjust the sliding angle and frequency according to the depth of the hoeing pit of the front hollow digging rod 204 to improve the burying effect and accuracy. A second soil covering support rod 219 is fixedly installed at the rear end of the second positioning support rod 212, and a soil covering sliding rod 220 is longitudinally slidably installed in the second soil covering support rod 219. A positioning ring is provided at the bottom of the soil covering sliding rod 220. The positioning ring at the bottom of the soil covering sliding rod 220 rotates with the soil covering wheel 109 to control the soil covering wheel 109 and the corresponding hollow digging rod 204 to be in the same travel route.

[0035] like Figures 1 to 11 As shown, a transmission gear rod 102 is installed on the top of the sowing bracket 101 for horizontal rotation, and the transmission gear rod 102 is meshed with a driving gear 213. Gears and pulleys are fixedly installed at both ends of the transmission gear rod 102, respectively. A driving wheel 108 is installed on the bottom of the front support rod 115 for horizontal rotation, and a pulley is fixedly installed on the driving wheel 108. The driving wheel 108 is connected to the transmission gear rod 102 through a belt. A driving motor 111 is fixedly installed on the top of the sowing bracket 101, and a gear is fixedly installed on the driving motor 111. The gear on the driving motor 111 is meshed with the gear on the transmission gear rod 102. The transmission gear rod 102 is driven to rotate by starting the driving motor 111, which is used to drive the driving wheel 108 to rotate and control the movement of the device. At the same time, the driving gear 213 is driven to rotate through the transmission gear rod 102 to control the device to sow.

[0036] like Figures 1 to 11As shown, the first adjusting screw 104 and the second adjusting screw 105 are rotatably installed at the front and rear ends of the top of the sowing bracket 101, respectively. The middle section of the first adjusting screw 104 is provided with a pair of threads, and the two ends of the second adjusting screw 105 are provided with a pair of threads. A plurality of second positioning support rods 212 that slide transversely in the sowing bracket 101 cooperate with the first adjusting screw 104 and the second adjusting screw 105 screw rods respectively. The thread specifications on the first adjusting screw 104 and the second adjusting screw 105 are different. The plurality of sowing mechanisms 2 are controlled to slide in the sowing bracket 101 at different sliding speeds, and the spacing between the sowing mechanisms 2 is evenly adjusted. The first adjusting screw 104 and the second adjusting screw 105 are fixedly installed with a pulley at the same end, and the first adjusting screw 104 and the second adjusting screw 105 are connected by a belt. A gear is fixedly installed at one end of the second adjusting screw 105, and a first adjusting motor 106 is fixedly installed on the sowing bracket 101. A gear is fixedly installed on the first adjusting motor 106, and the gear on the first adjusting motor 106 is meshed with the gear on the second adjusting screw 105.

[0037] Working principle: When wheat breeding and sowing is carried out, the driving motor 111 is started to drive the transmission gear rod 102 to rotate, and the rotation of the transmission gear rod 102 drives the driving gear 213 to rotate. When the driving gear 213 rotates, the sowing transmission rod 217 drives the hollow digging rod 204 to slide downward on the hollow mixing rod 206, and the transmission roller 207 is driven to rotate in the mixing groove of the hollow mixing rod 206 through the contact and cooperation between the transmission roller 207 and the inner wall of the hollow digging rod 204. The material trough carries pesticides or reagents and is placed in the mixing trough of the hollow mixing rod 206, and the wheat seeds are transported layer by layer to the mixing trough at the bottom of the hollow mixing rod 206 through the material trough on the transmission roller 207 and discharged, and the wheat seeds with pesticides or cultivation reagents attached to the surface are sown into the seed pit dug by the hollow digging rod 204, and then the soil around the digging pit is filled into the digging pit through the covering wheel 109, and the soil pressing slider 110 is driven by the covering transmission rod 218 to slide on the covering wheel 109 to compact the soil in the digging pit.

[0038] During this period, the soil pressing slider 110 is started as needed, and the height of the limit slider 211 in the limit groove of the hollow digging rod 204 is adjusted to adjust the sliding distance of the hollow digging rod 204 on the outside of the hollow mixing rod 206, so as to control the amount of seed sowing in each hoe hole. When the hollow digging rod 204 slides to the limit distance on the outside of the hollow mixing rod 206, the limit slider 211 is in contact with the limit key 223 to drive the hollow digging rod 204 to slide downward at the bottom of the first positioning support rod 203. During this period, the transmission slider 205 slides in the seed transmission bin 202 through the compression spring between the transmission slider 205 and the seed transmission bin 202, and the discharge port at the rear end of the transmission slider 205 is closed by the U-shaped baffle 208 to prevent seeds from accumulating inside the hollow mixing rod 206 and to prevent seeds from getting stuck in the transmission roller 207 and affecting the operation of the equipment.

[0039] During this period, the distance between the supporting slider 216 and the axis of the driving gear 213 is adjusted by starting the third adjusting motor 214, so as to adjust the hoeing and sowing frequency of the hollow digging rod 204, and at the same time, synchronously control the burying frequency of the soil pressing slider 110.

Claims

1. An adjustable wheat breeding sowing device, comprising a driving mechanism (1), the driving mechanism (1) comprising a sowing support (101), a traction rod (103) being fixedly mounted at the front end of the sowing support (101), characterized in that: A plurality of seeding mechanisms (2) are installed in a transversely sliding manner in the seeding support (101), the seeding mechanism (2) comprising a second positioning support rod (212), a pair of driving gears (213) being installed in a transversely rotatable manner at the bottom of the second positioning support rod (212), an adjustment slot being provided in the driving gear (213), a third adjusting screw (215) being installed in a radially rotatable manner in the adjustment slot of the driving gear (213), a support slider (216) being installed in an axially slidable manner between the two driving gears (213), two ends of the support slider (216) respectively cooperating with the two third adjusting screws (215) lead screws, a main connecting rod being provided in the center of the support slider (216), a seeding transmission rod (217) being hingedly connected to the connecting rod in the center of the support slider (216), the seeding transmission rod (217) having a tuning fork-shaped longitudinal cross-section, a secondary connecting rod being fixedly installed in the middle section of the seeding transmission rod (217), and a soil covering transmission rod (218) being hingedly connected to the secondary connecting rod in the seeding transmission rod (217); A pair of rear support rods (114) are fixedly mounted at the bottom of the rear end of the sowing support (101); a first soil covering support rod (107) is longitudinally slidably mounted at the bottom of the rear support rod (114); a square support rod (113) is transversely rotatably mounted between the first soil covering support rods (107); a plurality of soil covering wheels (109) are slidably mounted on the square support rods (113); the soil covering wheels (109) are of an hourglass-shaped structure; a soil pressing slider (110) is slidably mounted on the central outer wall of the soil covering wheel (109); and the soil pressing slider (110) is hinged to the bottom of the soil covering transmission rod (218); A pair of front support rods (115) are fixedly mounted at the bottom of the front end of the sowing support (101); a sliding support rod (112) is longitudinally slidably mounted between the front support rods (115); a compression spring is fixedly mounted between the bottom of the sliding support rod (112) and the sowing support (101); the sowing mechanism (2) comprises a hollow digging rod (204); the rear end of the hollow digging rod (204) is slidably matched with the sliding support rod (112); a discharge trough is provided inside the hollow digging rod (204); the rear end of the hollow digging rod (204) is slidably matched with the sowing support The bottom of the transmission rod (217) is hinged, a hollow mixing rod (206) is longitudinally slidably installed in the hollow digging rod (204), a tension spring is fixedly installed between the top of the hollow mixing rod (206) and the hollow digging rod (204), a first positioning support rod (203) is longitudinally slidably installed on the top of the hollow digging rod (204), a tension spring is fixedly installed between the inside of the first positioning support rod (203) and the top of the hollow mixing rod (206), and the first positioning support rod (203) is transversely slidably installed on the top of the sowing support (101).

2. The adjustable sowing device for wheat breeding according to claim 1, characterized in that: The hollow mixing rod (206) is provided with a plurality of mixing grooves inside. A transmission roller (207) is rotatably installed at the bottom of the mixing groove of the hollow mixing rod (206). The transmission roller (207) rolls with the inner wall of the discharge groove of the hollow digging rod (204). The transmission roller (207) is provided with a plurality of material-discharging grooves. The hollow digging rod (204) is provided with a plurality of medicine buffer grooves (222). The number of the medicine buffer grooves (222) is the same as that of the mixing grooves inside the hollow mixing rod (206). The positions of the medicine buffer grooves (222) are higher than the corresponding transmission rollers (207). The rear end of the hollow digging rod (204) is fixedly provided with a plurality of medicine transmission pipes (209). The number of the medicine transmission pipes (209) is the same as that of the medicine buffer grooves (222) and they are communicated with the corresponding medicine buffer grooves (222). The other end of the medicine transmission pipe (209) is connected to an external medicine storage bin.

3. The adjustable sowing device for wheat breeding according to claim 1, characterized in that: A limiting slide groove is provided at the top of the hollow digging rod (204), a second adjusting motor (210) is fixedly installed in the limiting slide groove of the hollow digging rod (204), an adjusting screw is fixedly installed at the top of the second adjusting motor (210), a limiting slider (211) is assembled on the screw rod of the adjusting screw at the top of the second adjusting motor (210), a limiting key (223) is fixedly installed at the top of the hollow mixing rod (206), and the top of the limiting key (223) is in contact with the bottom of the limiting slider (211).

4. The adjustable wheat breeding sowing device according to claim 1, characterized in that: A seed groove (201) and a seed transmission bin (202) are fixedly mounted on the front end of the first positioning support rod (203); a transmission slider (205) is slidably mounted in the seed transmission bin (202) in a transverse direction; a compression spring is fixedly mounted between the front end of the transmission slider (205) and the first positioning support rod (203); a feeding trough is arranged inside the transmission slider (205); a pair of limit sliders (211) are fixedly mounted on the top of the transmission slider (205); an inverted trapezoidal inclined surface is arranged at the bottom of the rear end of the transmission slider (205); an inclined surface of the same angle is arranged on the top of the hollow mixing rod (206); the bottom of the transmission slider (205) and the inclined surface of the top of the hollow mixing rod (206) are in contact with each other; a U-shaped baffle (208) is fixedly mounted on the top of the hollow mixing rod (206); the U-shaped baffle (208) is slidably mounted in the discharge trough in the transmission slider (205).

5. The adjustable wheat breeding sowing device according to claim 4, characterized in that: The feed trough in the transmission slider (205) is connected to the top of the transmission slider (205), a discharge port is provided at the bottom of the seed slot (201), the discharge port at the bottom of the seed slot (201) is connected to the feed trough at the top of the transmission slider (205), and the shift plate (221) is slidably matched with the inner wall of the seed slot (201).

6. The adjustable wheat breeding sowing device according to claim 1, characterized in that: A bevel gear is provided at the bottom of the third adjusting screw (215); a third adjusting motor (214) is fixedly mounted at the center of the driving gear (213); a bevel gear is fixedly mounted on the third adjusting motor (214); and the bevel gear at the bottom of the third adjusting screw (215) meshes with the bevel gear on the third adjusting motor (214).

7. The adjustable wheat breeding sowing device according to claim 1, characterized in that: A second soil covering support rod (219) is fixedly mounted on the rear end of the second positioning support rod (212), a soil covering sliding rod (220) is longitudinally slidably mounted inside the second soil covering support rod (219), a positioning ring is provided at the bottom of the soil covering sliding rod (220), and the positioning ring at the bottom of the soil covering sliding rod (220) is rotatably matched with the soil covering wheel (109).

8. The adjustable wheat breeding sowing device according to claim 1, characterized in that: A first adjusting screw (104) and a second adjusting screw (105) are rotatably mounted at the front and rear ends of the top of the sowing support (101), respectively; a pair of threads are arranged in the middle section of the first adjusting screw (104), and a pair of threads are arranged at both ends of the second adjusting screw (105); a plurality of second positioning support rods (212) that slide transversely in the sowing support (101) respectively cooperate with the screw rods of the first adjusting screw (104) and the second adjusting screw (105); a pulley is fixedly mounted on the same end of the first adjusting screw (104) and the second adjusting screw (105); the first adjusting screw (104) and the second adjusting screw (105) are connected via a belt; a gear is fixedly mounted on one end of the second adjusting screw (105); a first adjusting motor (106) is fixedly mounted on the sowing support (101), a gear is fixedly mounted on the first adjusting motor (106), and the gear on the first adjusting motor (106) meshes with the gear on the second adjusting screw (105).

9. The adjustable wheat breeding sowing device according to claim 1, characterized in that: A transmission gear rod (102) is installed on the top of the sowing support (101) for transverse rotation, the transmission gear rod (102) meshes with a driving gear (213), gears and pulleys are fixedly installed at both ends of the transmission gear rod (102), a driving wheel (108) is installed on the bottom of the front support rod (115) for transverse rotation, a pulley is fixedly installed on the driving wheel (108), the driving wheel (108) is connected to the transmission gear rod (102) via a belt, a driving motor (111) is fixedly installed on the top of the sowing support (101), a gear is fixedly installed on the driving motor (111), and the gear on the driving motor (111) meshes with the gear on the transmission gear rod (102).

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