Watermelon planting intelligent hole digging and fertilizing integrated machine

Abstract

The application provides a watermelon planting intelligent hole digging and fertilizing integrated machine, and relates to the technical field of watermelon planting. The machine comprises a convex-shaped frame, an operation table and a hole digging and planting assembly. Two groups of synchronous wheels are rotatably installed at the corresponding positions of the operation table and the long groove. Each group of synchronous wheels is installed with a conveying synchronous belt. A circle of push plates is fixedly connected to the outer periphery of the conveying synchronous belt. The top layer of the conveying synchronous belt and the push plates thereon are located in the conveying groove formed between the two long vertical plates. The two groups of synchronous wheels are driven by a gear set mechanism. The two groups of synchronous wheels and the two conveying synchronous belts are reversely driven. A placing groove is formed between every two adjacent push plates. The watermelon seedlings are transferred and placed in the placing groove. The application can complete the feeding operation of two feeding stations by one person at a time, which can save the trouble of feeding two feeding stations by two persons respectively, and is time-saving and efficient in operation and use, which helps to reduce the use of labor.

Description

Technical Field

[0001] This invention relates to the field of watermelon planting technology, and in particular to an intelligent hole-digging and fertilizing machine for watermelon planting. Background Technology

[0002] Watermelon is an important economic fruit crop in my country, with a wide planting coverage and large market demand. It is one of the core crops for increasing income and wealth for many growers. Watermelon planting has high requirements for transplanting operations. Before transplanting, a series of procedures such as digging holes, fertilizing, and preparing the planting holes need to be completed. In order to simplify the above procedures and improve the efficiency of watermelon planting, an intelligent hole-digging and fertilizing machine for watermelon planting has been developed.

[0003] The existing hole-digging and fertilizing machine has certain design flaws in the mechanism for feeding watermelon seedlings. When faced with two feeding stations, it cannot be operated by a single person in one go. Two people are required to work together to complete the feeding operation. This not only requires additional manpower, but also makes the operation cumbersome and inefficient. Summary of the Invention

[0004] In view of this, the present invention provides an intelligent hole-digging and fertilizing machine for watermelon planting, to solve the problem that existing hole-digging and fertilizing machines cannot perform dual-station feeding operations by a single person in one operation when facing dual feeding stations, and require two people to work together to complete the dual-station feeding operation.

[0005] The technical solution proposed in this invention is as follows: an intelligent hole-digging and fertilizing machine for watermelon planting, specifically including a convex frame, an operating table, and hole-digging and planting components. An operating table is fixedly installed above the convex frame, and two symmetrically distributed hole-digging and planting components are slidably installed below it. The operating table has a long groove, and two long vertical plates are symmetrically fixed to the top of the operating table on both sides of the long groove. Two seedling slots are symmetrically opened at both ends of the long groove. Two sets of synchronous pulleys are rotatably installed below the operating table at positions corresponding to the long groove, and a synchronous conveyor belt is installed on each set of synchronous pulleys. A ring of baffles is fixedly connected, and the top layer of the conveyor belt and the baffles on the top layer are located in the conveyor groove formed between two long vertical plates; two sets of synchronous pulleys are driven by a gear mechanism, and the two sets of synchronous pulleys and the two conveyor belts are driven in opposite directions; a placement groove is formed between every two adjacent baffles, and watermelon seedlings are transferred and placed in the placement groove; the seedling leakage groove and the pit planting component are used to discharge watermelon seedlings into the pit planting component, and the two conveyor belts driven in opposite directions can transfer the watermelon seedlings placed in the placement grooves to the two pit planting components.

[0006] Furthermore, each set of synchronous pulleys consists of two synchronous pulleys spaced apart, and the gear set mechanism consists of two meshing transmission gears. The two transmission gears are respectively fixedly mounted on the shafts of two adjacent synchronous pulleys in the two sets of synchronous pulleys. The transmission gears protrude from the space below the operating table and are close to one long side of the operating table.

[0007] Furthermore, a seedling tray is placed on the top of the operating table, and several planting troughs are set on the seedling tray, in which watermelon seedlings are planted. The top of the operating table has an inner groove, and the seedling tray is inserted into the inner groove.

[0008] Furthermore, the shaft of any one of the two sets of synchronous pulleys is extended to form a Z-shaped rocker arm, which is located below the control panel.

[0009] Furthermore, a seat is fixedly installed at the top of the convex frame near the operating table, and plow teeth and wheels are respectively provided at the lower ends of the convex frame, which are fixedly installed and rotatably installed respectively.

[0010] Furthermore, the planting hole digging component is used to dig planting holes in the melon field and guide the watermelon seedlings fed into it to slide into the planting holes; The planting assembly consists of a conical seedling receiving cover, a seedling guide tube fixed to the bottom of the conical seedling receiving cover, a leak-proof tube slidably installed at the bottom of the seedling guide tube by means of a spring push, and a planting cone tube set below the leak-proof tube. A U-shaped guide frame is fixedly connected to the bottom of the convex frame and the corresponding position on the upper and lower parts of the operating table. A rod sleeve is fixedly connected to the outer periphery of the conical seedling receiving cover. The rod sleeve slides with the vertical side rod of the U-shaped guide frame. A horizontal transmission rod is fixedly connected to the rod sleeve. The digging cone consists of two rotating semi-circular cones that are closed and joined together. The top of the digging cone abuts against the bottom of the leak-proof pipe. Two L-shaped guide rods are symmetrically fixed to the outer circumference of the seedling guide tube. The rotating shaft of the digging cone is rotatably engaged with the bottom part of the L-shaped guide rods. A transmission swing rod is fixed to one end of each of the two semi-circular cones at opposite ends of the rotating shaft. The two transmission swing rods are set in opposite directions for support.

[0011] Furthermore, a slip ring is slidably fitted onto the seedling guide tube, and two sets of Z-shaped force transmission rods are symmetrically welded to the bottom side of the slip ring. A rectangular sliding sleeve is fixed to the bottom end of each set of Z-shaped force transmission rods. The rectangular sliding sleeve slides in conjunction with an L-shaped guide rod, and a connecting rod rotatably connects the rectangular sliding sleeve to the free end of the transmission swing rod. The bottom end of the leak-proof tube is fixedly connected to a force-bearing ring, and a spring that pushes the leak-proof tube is fitted onto the leak-proof tube and compressed and clamped between the force-bearing ring and the seedling guide tube.

[0012] Furthermore, a transmission box is fixedly installed at the top of the convex frame away from the seat, and the transmission box is connected to the gearbox of tractor or other traction machinery via a universal joint coupling. Both ends of the power output shaft of the transmission box are fixedly fitted with drive wheels, and the rims of the drive wheels are rotatably connected to the horizontal transmission rod by a tie rod.

[0013] Furthermore, a downward-emitting laser rangefinder sensor is fixedly suspended at the bottom of the convex frame, and a horizontal trigger plate is fixedly connected to the rod sleeve, with the horizontal trigger plate and the laser rangefinder sensor facing each other vertically. An electrical control box is fixedly installed on the convex frame. The control box contains a control unit and an external sound prompter. The sound prompter is electrically connected to the control unit, and the laser rangefinder is communicatively connected to the control unit. Two push-pull electromagnets are symmetrically fixed to the outer periphery of the conical seedling receiving cover. The L-shaped telescopic rod of the push-pull electromagnet is fixedly connected to the slip ring, and the push-pull electromagnet is electrically connected to the control unit.

[0014] The present invention has the following beneficial effects: 1. During the synchronous reversal drive of the two conveyor belts, when the watermelon seedlings are conveyed to the positions of the two seedling trays, the two watermelon seedlings fall sideways into the two seedling trays and then through the two seedling trays into the two conical seedling receiving covers. In this way, the two watermelon seedlings are fed simultaneously to the two feeding stations formed by the two digging and planting components. Compared with the prior art described in the background, this allows a single person to complete the feeding operation of the two feeding stations at one time, which can save the trouble of requiring two people to cooperate in feeding the two feeding stations separately. The operation is time-saving and efficient, and helps to reduce the use of manpower.

[0015] 2. Since the top of the semi-conical cylinder is in contact with the bottom of the leak-proof pipe, the top of the semi-conical cylinder will push and drive the leak-proof pipe to slide up and down when it swings and opens and closes. The gap between the two will change continuously. The leak-proof pipe is installed by sliding and extending in the form of spring pushing. Under the combined action of the spring's counter-push force and the pushing force from the leak-proof pipe, the leak-proof pipe can automatically slide up and down, adapt to the changes in the gap and make up for the gap, so as to prevent the pre-applied fertilizer in the soil at the bottom of the watermelon seedling from leaking through the gap and to ensure the normal swinging and opening and closing of the semi-conical cylinder. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0018] In the attached diagram: Figure 1 A schematic diagram of the entire invention from one side view is shown; Figure 2 This is a schematic diagram showing another side view of the entire invention; Figure 3 A bottom-view schematic diagram of the entire invention is shown; Figure 4 The present invention is shown Figure 3 Enlarged structural diagram of section A; Figure 5 A bottom-side view of the operating table in this invention is shown; Figure 6 This invention illustrates the structure of the synchronous belt and the Z-shaped rocker arm. Figure 7 The diagram shows the structural schematics of the seedling trough and the elongated trough in this invention; Figure 8 A schematic diagram of one side of the planting component in this invention is shown; Figure 9 This shows a schematic diagram of the other side of the planting component in the present invention; Figure 10 A schematic diagram showing the disassembly state of the pit-digging cone and the push-pull electromagnet in this invention is shown. Figure 11 The diagram shows the structure of the Z-shaped force transmission rod and the semi-conical cylinder in this invention.

[0019] List of reference numerals in the attached diagram: 1. Convex frame; 101. Wheel; 102. Plow teeth; 2. Transmission box; 201. Drive wheel; 202. Tie rod; 3. Hollow-out guide frame; 4. Operating table; 401. Long vertical plate; 402. Seedling tray; 403. Long trough; 404. Synchronous pulley; 405. Inner groove; 406. Transmission gear; 5. Seedling trays; 6. Conveyor belt; 601. Paddle plate; 7. Z-shaped joystick; 8. Planting Components; 801. Conical Seedling Cover; 802. Planting Cone; 8021. Semi-circular Cone; 8022. Transmission Swing Rod; 803. Seedling Guide; 804. Rod Sleeve; 8041. Horizontal Transmission Rod; 8042. Horizontal Trigger Plate; 805. Leakage Prevention Pipe; 8051. Force Ring; 806. Slip Ring; 807. Z-shaped Force Transmission Rod; 8071. Rectangular Slip Sleeve; 8072. Connecting Rod; 808. L-shaped Guide Rod; 9. Push-pull electromagnet; 901. L-shaped telescopic rod; 10. Electrical control box; 11. Seat; 12. Audible prompter; 13. Laser rangefinder sensor. Detailed Implementation

[0020] Please refer to Figures 1 to 11 Example 1: This embodiment proposes an intelligent hole-digging and fertilizing machine for watermelon planting, including a convex frame 1, an operating platform 4, and hole-digging and planting components 8. The operating platform 4 is fixedly installed on the top of the convex frame 1, and two symmetrically distributed hole-digging and planting components 8 are slidably installed below it. A long groove 403 is opened on one long side of the operating platform 4. Two long vertical plates 401 are symmetrically fixed to the top of the operating platform 4 on both sides of the long groove 403. Two seedling slots 402 are symmetrically opened at both ends of the long groove 403. Two sets of synchronous pulleys 404 are symmetrically rotated and installed below the operating platform 4 at positions corresponding to the top and bottom of the long groove 403. Each set of synchronous pulleys 404 is equipped with a synchronous conveyor belt 6, and a ring of equally spaced... The cloth-mounted baffle 601, the top layer of the conveyor belt 6, and the baffle 601 on the top layer are all located in the conveying groove formed between two long vertical plates 401; the two sets of synchronous wheels 404 are driven by a gear mechanism, and the two sets of synchronous wheels 404 and the two conveyor belts 6 are driven in opposite directions; a placement groove is formed between every two adjacent baffles 601, and the watermelon seedlings are transferred and placed in the placement groove; the seedling leakage groove 402 and the pit planting component 8 are used to discharge the watermelon seedlings into the pit planting component 8, and the two conveyor belts 6 driven in opposite directions can transfer the watermelon seedlings placed in the placement grooves to the two pit planting components 8, completing the synchronous one-time feeding of the two pit planting components 8.

[0021] Each set of synchronous pulleys 404 consists of two synchronous pulleys 404 spaced apart. The gear mechanism consists of two meshing transmission gears 406. The two transmission gears 406 are respectively fixedly mounted on the shafts of two adjacent synchronous pulleys 404 in the two sets of synchronous pulleys 404. The transmission gears 406 protrude from the space below the operating table 4 and are close to one long side of the operating table 4.

[0022] The top of the operating table 4 supports a seedling tray 5, which has several planting troughs. Watermelon seedlings are planted in the planting troughs. The top of the operating table 4 has an inner groove 405, and the seedling tray 5 is inserted into the inner groove 405.

[0023] In this case, any one of the two adjacent synchronous pulleys 404 in the two sets of synchronous pulleys 404 is extended to form a Z-shaped rocker arm 7, which is located in the middle position below the control panel 4.

[0024] The seat 11 is fixedly installed at the top of the convex frame 1 near the operating table 4. Plow teeth 102 and wheels 101 are respectively installed at the lower ends of the convex frame 1, which are fixedly installed and rotatably installed respectively.

[0025] The planting component 8 is used to dig planting holes in the melon field and guide the watermelon seedlings fed into the holes to slide into them. The planting component 8 consists of a conical seedling receiving cover 801, a seedling guide tube 803 welded to the bottom of the conical seedling receiving cover 801, a leak-proof pipe 805 slidably installed at the bottom of the seedling guide tube 803 by a spring push, and a digging cone 802 located below the leak-proof pipe 805. A U-shaped guide frame 3 is welded to the bottom of the convex frame 1 at corresponding positions on the operating table 4. A rod sleeve 804 is welded to the outer periphery of the conical seedling receiving cover 801. The rod sleeve 804 and the U-shaped guide... The vertical side rod of frame 3 is slidably fitted, and a horizontal transmission rod 8041 is welded on the rod sleeve 804; the digging cone 802 is composed of two rotatably mounted semi-circular cones 8021 that are closed and connected. The top of the digging cone 802 abuts against the bottom of the leak-proof pipe 805. Two L-shaped guide rods 808 are symmetrically welded to the outer circumference of the seedling guide tube 803. The rotating shaft of the digging cone 802 is rotatably fitted through the bottom part of the L-shaped guide rod 808. The opposite ends of the rotating shafts of the two semi-circular cones 8021 are fixedly connected to the transmission swing rods 8022, and the two transmission swing rods 8022 are set in opposite directions for support.

[0026] Among them, a sliding ring 806 is slidably fitted on the seedling guide tube 803, and two sets of Z-shaped force transmission rods 807 are symmetrically welded to the bottom side of the sliding ring 806. A rectangular sliding sleeve 8071 is welded to the bottom end of each set of Z-shaped force transmission rods 807. The rectangular sliding sleeve 8071 is slidably engaged with the L-shaped guide rod 808. A connecting rod 8072 is rotatably connected between the rectangular sliding sleeve 8071 and the free end of the transmission swing rod 8022. A force-bearing ring 8051 is integrally formed and fixed to the bottom end of the anti-leakage tube 805. A spring that pushes the anti-leakage tube 805 is fitted on the anti-leakage tube 805 and is compressed and clamped between the force-bearing ring 8051 and the seedling guide tube 803.

[0027] Implementation 2: This embodiment is based on Implementation 1, but with the following additions: A transmission box 2 is fixedly installed at the top of the convex frame 1, away from the seat 11. The transmission box 2 is connected to the gearbox of tractor or other traction machinery via a universal joint coupling. Drive wheels 201 are fixedly mounted on both ends of the power output shaft of the transmission box 2. A tie rod 202 is rotatably connected between the wheel rim of the drive wheel 201 and the horizontal transmission rod 8041. A downward-emitting laser rangefinder sensor 13 is fixedly suspended at the bottom of the convex frame 1. A horizontal trigger plate 8042 is welded onto the rod sleeve 804. 2. The laser rangefinder sensor 13 is directly opposite to the laser rangefinder sensor 13. An electrical control box 10 is fixedly installed on the convex frame 1. The electrical control box 10 contains a control unit and an external sound prompter 12. The sound prompter 12 is electrically connected to the control unit. The laser rangefinder sensor 13 is communicatively connected to the control unit. Two push-pull electromagnets 9 are symmetrically fixedly installed on the outer periphery of the conical seedling receiving cover 801. The L-shaped telescopic rod 901 of the push-pull electromagnet 9 is fixedly connected to the slip ring 806. The push-pull electromagnet 9 is electrically connected to the control unit.

[0028] The working principle, specific details, implementation steps, functions and interrelationships of the features in the above embodiments, and the roles these features play in realizing this technical solution will be described and explained in detail below: When in use, the convex frame 1 is connected to the tractor for traction, the transmission box 2 is connected to the tractor's gearbox through a universal joint coupling so that the gearbox can rotate and drive it, the power line of the electrical control box 10 is connected to the tractor's power generation system or battery, and then the tractor is driven in the melon field to drag the convex frame 1 to dig holes and plant watermelon seedlings. It is worth noting that: in the planting trough of seedling tray 5, the fertilization of watermelon seedlings needs to be completed in advance, that is, the fertilizer is applied in advance to the soil in the planting trough for planting watermelon seedlings; During the planting process, workers sit on chairs 11, using one hand to transfer watermelon seedlings from seedling trays 5 to the conveyor troughs between long vertical plates 401 and to distribute the seedlings into placement slots on the two synchronous conveyor belts 6. The other hand rotates the Z-shaped rocker arm 7. Through the power transmission of two transmission gears 406, manually rotating the Z-shaped rocker arm 7 drives two sets of synchronous wheels 404 and the two synchronous conveyor belts 6 to rotate synchronously in opposite directions, thus conveying the watermelon seedlings. As the two synchronous conveyor belts 6 are driven to rotate synchronously in reverse, the watermelon seedlings are conveyed... When the seedlings reach the positions of the two seedling trays 402, the two watermelon seedlings fall sideways into the two seedling trays 402 and then through the two seedling trays 402 into the two conical seedling receiving covers 801. In this way, the two watermelon seedlings are fed simultaneously to the two feeding stations formed by the two digging and planting components 8. Compared with the prior art described in the background, this allows a single person to complete the feeding operation of the two feeding stations at one time, which can save the trouble of requiring two people to work together to feed the two feeding stations separately. The operation is time-saving and efficient, and helps to reduce the use of manpower.

[0029] When the convex frame 1 is pulled and dragged in the melon field, the plow teeth 102 are used to turn over and create planting furrows. The pit digging and planting component 8 is aligned with the plow teeth 102 in the front and back direction and is located on the path of the planting furrow. The pit digging and planting component 8 is used to dig planting holes in the planting furrow and plant the watermelon seedlings that have been fed into them into the newly dug planting holes. The planting process of the planting component 8 is as follows: Two drive wheels 201, pull rods 202, and rod sleeves 804 are connected to form two sets of deformed crank-slider mechanisms. Through these two mechanisms, when the transmission box 2 drives the two drive wheels 201, it can drive the two rod sleeves 804 and the two planting components 8 to slide up and down reciprocally. Two rectangular sliding sleeves 8071, two connecting rods 8072, two transmission rocker arms 8022, and two semi-conical cylinders 8021 are connected to form two sets of crank-rocker mechanisms. Through these two mechanisms, the two Z-shaped force transmission rods slide up and down. 807 can drive the two semi-circular cones 8021 to swing in opposite directions or back to back, controlling the two semi-circular cones 8021 and the hole-digging cone 802 as a whole to swing open and close. After the watermelon seedlings fall into the conical seedling receiving cover 801, they are first gathered and guided to the seedling guide tube 803 by the conical guiding effect at the bottom of the conical seedling receiving cover 801, and then fall into the closed hole-digging cone 802 through the leak-proof pipe 805 for temporary storage. When the two hole-digging planting components 8 are driven to slide down and the two hole-digging cones 802 are inserted into the planting trench, the hole-digging cone 802 drills planting holes in the planting trench. The laser rangefinder 13 is used to detect the reference distance between itself and the horizontal trigger plate 8042 in real time. The reference distance can indirectly reflect the distance between the conical seedling receiving cover 801 and the seedling trough 402, and can also reflect the relative positional relationship between the digging cone 8021 and the melon field planting ditch. When the reference distance is small, it indicates that the conical seedling receiving cover 801 is close to or near the seedling trough 402, and when the reference distance is large, it indicates that the digging cone 8021 has been inserted into the planting ditch. The laser rangefinder 13 transmits the reference distance data it detects to the control unit in real time. The control unit has two preset distance ranges, one for feeding and the other for unloading. When the reference distance is large and falls into the feeding distance range, it indicates that the conical seedling receiving cover 801 is close to or near the seedling trough 402, and the Z-shaped rocker arm 7 can be rotated to feed the watermelon seedlings into the digging planting component 8. When the reference distance falls into the feeding distance range, the control unit activates the sound prompt 12 to remind the worker to perform the feeding operation in time. When the distance from the loading interval is within the specified range, the control unit shuts off the audible prompt 12. When the distance falls within the unloading interval range and the reference interval is small, it indicates that the digging cone 8021 has been inserted into the planting trench. At this time, the control unit outputs a command to activate the two push-pull electromagnets 9. Using the downward force of the L-shaped telescopic rod 901 of the push-pull electromagnets 9, the two semi-circular cones 8021 are driven to rotate in opposite directions, opening the digging cone 802 and unloading the watermelon seedlings temporarily stored inside into the planting holes dug in the planting trench, thus completing the watermelon planting process. Seedling planting: During the upward sliding drive of the two digging planting components 8, when the reference distance increases and leaves the unloading distance range, the control unit outputs a command to shut down the two push-pull electromagnets 9, and uses the upward retraction driving force of the two L-shaped telescopic rods 901 to drive the two semi-circular cones 8021 to swing towards each other, controlling the digging cone 802 to close, in preparation for temporarily storing watermelon seedlings in the digging cone 802 again. By repeating the above process, the present invention can be used to continuously plant watermelon seedlings.

[0030] The control unit and the laser rangefinder 13 together form an intelligent control system for starting and stopping the push-pull electromagnet 9 and the sound prompter 12.

[0031] Since the top of the semi-conical cylinder 8021 abuts against the bottom of the leak-proof pipe 805, the top of the semi-conical cylinder 8021 will push and drive the leak-proof pipe 805 to slide up and down when it swings open and closes. The gap between the two will change continuously. The leak-proof pipe 805 is installed in a sliding extension and retraction manner in the form of spring push. Under the combined action of the spring's counter-push force and the push force from the leak-proof pipe 805, the leak-proof pipe 805 can automatically slide up and down, adapt to the changes in the gap and make up for the gap, so as to prevent the pre-applied fertilizer in the soil at the bottom of the watermelon seedling from leaking through the gap and to ensure that the semi-conical cylinder 8021 swings open and closes normally.

Claims

1. A smart hole-digging and fertilizing machine for watermelon planting, comprising a convex frame (1), an operating table (4) and a hole-digging and planting component (8), wherein the operating table (4) is fixedly installed above the convex frame (1), and two symmetrically distributed hole-digging and planting components (8) are slidably installed below it. Its features are, The operating table (4) has a long groove (403). Two long vertical plates (401) are symmetrically fixed to the top of the operating table (4) on both sides of the long groove (403). Two seedling trays (402) are symmetrically opened at both ends of the long groove (403). Two sets of synchronous pulleys (404) are rotatably installed below the operating table (4) at positions corresponding to the top and bottom of the long groove (403). Each set of synchronous pulleys (404) is equipped with a synchronous belt (6). A ring of baffles (601) is fixed to the outer periphery of the synchronous belt (6). The top layer of the synchronous belt (6) and the baffles (601) on the top layer are located at the two long vertical plates (401). In the conveying groove formed between the vertical plates (401); two sets of synchronous wheels (404) are driven by a gear mechanism, and the two sets of synchronous wheels (404) and two conveying synchronous belts (6) are driven in opposite directions; a placement groove is formed between each two adjacent push plates (601), and watermelon seedlings are transferred and placed in the placement groove; the seedling leakage groove (402) and the pit planting component (8) are used to discharge watermelon seedlings into the pit planting component (8), and the two conveying synchronous belts (6) driven in opposite directions can transfer the watermelon seedlings placed in the placement groove to the two pit planting components (8).

2. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 1, characterized in that, Each set of synchronous pulleys (404) consists of two synchronous pulleys (404) spaced apart. The gear set mechanism consists of two meshing transmission gears (406). The two transmission gears (406) are respectively fixedly mounted on the shafts of two adjacent synchronous pulleys (404) in the two sets of synchronous pulleys (404). The transmission gears (406) protrude from the space below the operating table (4) and are close to one long side of the operating table (4).

3. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 1, characterized in that, The top of the operating table (4) is supported by a seedling tray (5), and several planting troughs are provided on the seedling tray (5). Watermelon seedlings are planted in the planting troughs. The top of the operating table (4) has an inner groove (405), and the seedling tray (5) is inserted into the inner groove (405).

4. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 2, characterized in that, The shaft of any one of the two sets of synchronous pulleys (404) is extended and forms a Z-shaped rocker arm (7), which is located below the operating table (4).

5. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 1, characterized in that, A seat (11) is fixedly installed at the top of the convex frame (1) near the operating table (4). Plow teeth (102) and wheels (101) are respectively provided at the lower ends of the convex frame (1), which are fixedly installed and rotatedly installed respectively.

6. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 1, characterized in that, The planting hole digging component (8) is used to dig planting holes in the melon field and guide the watermelon seedlings fed into it to slide into the planting holes; The planting assembly (8) consists of a conical seedling cover (801), a seedling guide tube (803) fixed to the bottom of the conical seedling cover (801), a leak-proof tube (805) slidably installed at the bottom of the seedling guide tube (803) by means of spring push, and a planting cone (802) set below the leak-proof tube (805). A U-shaped guide frame (3) is fixedly connected to the bottom of the convex frame (1) and the corresponding position of the upper and lower parts of the operating table (4). A rod sleeve (804) is fixedly connected to the outer periphery of the conical seedling cover (801). The rod sleeve (804) slides with the vertical side rod of the U-shaped guide frame (3). A horizontal transmission rod (8041) is fixedly connected to the rod sleeve (804). The digging cone (802) is composed of two rotating semi-circular cones (8021) that are closed and connected. The top of the digging cone (802) is in contact with the bottom of the leak-proof pipe (805). Two L-shaped guide rods (808) are symmetrically fixed to the outer periphery of the seedling guide tube (803). The rotating shaft of the digging cone (802) and the bottom part of the L-shaped guide rod (808) are connected through and rotated. The opposite ends of the rotating shafts of the two semi-circular cones (8021) are fixedly connected to the transmission swing rods (8022). The two transmission swing rods (8022) are set in opposite directions for support.

7. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 6, characterized in that, The seedling guide tube (803) is slidably fitted with a slip ring (806). Two sets of Z-shaped force transmission rods (807) are symmetrically welded to the bottom side of the slip ring (806). The bottom ends of the two sets of Z-shaped force transmission rods (807) are fixedly connected to rectangular sliding sleeves (8071). The rectangular sliding sleeves (8071) are slidably engaged with the L-shaped guide rods (808). A connecting rod (8072) is rotatably connected between the rectangular sliding sleeves (8071) and the free end of the transmission swing rod (8022). The bottom end of the leak-proof tube (805) is fixedly connected to a force-bearing ring (8051). A spring that pushes the leak-proof tube (805) is fitted on the leak-proof tube (805) and is compressed and clamped between the force-bearing ring (8051) and the seedling guide tube (803).

8. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 6, characterized in that, A transmission box (2) is fixedly installed at the top of the convex frame (1) away from the seat (11). The transmission box (2) is connected to the gearbox of tractor and other traction machinery through a universal joint coupling. Both ends of the power output shaft of the transmission box (2) are fixedly fitted with drive wheels (201), and the wheel rim of the drive wheel (201) is rotatably connected to the horizontal transmission rod (8041) by a pull rod (202).

9. The intelligent hole-digging and fertilizing machine for watermelon planting according to claim 6, characterized in that, The bottom of the convex frame (1) is fixedly suspended with a downward-emitting laser rangefinder sensor (13), and a horizontal trigger plate (8042) is fixedly connected to the rod sleeve (804). The horizontal trigger plate (8042) and the laser rangefinder sensor (13) are directly opposite each other. An electrical control box (10) is fixedly installed on the convex frame (1). The electrical control box (10) contains a control unit and an external sound prompter (12). The sound prompter (12) is electrically connected to the control unit, and the laser range sensor (13) is communicatively connected to the control unit. Two push-pull electromagnets (9) are symmetrically fixed to the outer periphery of the conical seedling cover (801). The L-shaped telescopic rod (901) of the push-pull electromagnet (9) is fixedly connected to the slip ring (806), and the push-pull electromagnet (9) is electrically connected to the control unit.

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