A small hole digger for fruit tree planting

Abstract

The utility model discloses a small -size hole digger for fruit tree planting belongs to fruit tree planting technical field, and its technical scheme main points include main part frame, the inside of main part frame is provided with adjusting mechanism, the adjusting mechanism, the adjusting mechanism includes interval adjusting subassembly and height adjusting subassembly, through setting interval adjusting subassembly, interval adjusting subassembly can make two spiral drill bits work simultaneously, and simultaneously can realize the flexible adjustment of two spiral drill bits interval, can according to the demand of different fruit tree varieties or growth stage, accurate setting planting interval, has met the requirement of different plant spacing in orchard scale planting, through setting height adjusting subassembly, height adjusting subassembly is not only simple operation, can also accurate control spiral drill bit's earth penetration depth, ensures that all pit body depth is consistent, avoided the problem such as the fruit tree root system oxygen deficiency or moisture absorption deficiency caused by depth deviation, is favorable to improve seedling survival rate, guarantees the good growth trend of fruit tree later period.

Description

Technical Field

[0001] This utility model relates to the field of fruit tree planting technology, and in particular to a small hole digger for fruit tree planting. Background Technology

[0002] In the process of fruit tree planting, digging holes is a basic and crucial step that directly affects the quality of seedling planting and their subsequent growth.

[0003] A post hole digger generally consists of a power mechanism and a spiral digging mechanism. The power mechanism drives the digging mechanism to rotate, thereby achieving the purpose of digging a hole. During operation, the power equipment will generate a lot of vibration. For some people who have been engaged in fruit tree planting for a long time, this vibration can cause a disease mainly characterized by peripheral circulation and nerve dysfunction in the hand and arm, and may also cause a series of symptoms such as damage to the bones, joints, muscles and connective tissues of the arm. The existing patent (publication number: CN214338550U) describes a small hole digger for fruit tree planting. When the machine is working, the movable tube extends and retracts inside the fixed tube. At the same time, the movable tube and the limiting ring move up and down on the surface of the fixed column. During the movement of the limiting ring, the buffer spring moves up and down on the surface of the fixed column, causing the buffer spring to extend and retract. Then, through the elastic force of the buffer spring, the impact of the machine's vibration on the handrail is reduced, thereby reducing the vibration of the user's arm and effectively protecting the user's arm.

[0004] To address the aforementioned issues, existing patents offer solutions. These patents primarily utilize buffer springs to reduce the impact of equipment vibration on users, thus improving operational comfort. However, their core operational performance has significant shortcomings: Firstly, the equipment is equipped with only a single drill bit, allowing for the excavation of only one pit at a time. For orchards requiring mass planting, this results in low operational efficiency and significantly extends the planting cycle. Secondly, adjusting the pit depth relies on manual operation, which is not only cumbersome but also difficult to precisely control, leading to inconsistent pit depths. Fruit tree planting requires strict pit depth control; excessive depth can cause root hypoxia, while insufficient depth hinders water absorption. Such depth deviations directly affect seedling survival rates and subsequent growth.

[0005] Therefore, a small hole-digging machine for fruit tree planting is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a small hole digger for fruit tree planting, which solves the problem that existing hole diggers can only dig one hole at a time. For orchards that need to be planted in batches, the work efficiency is low and the planting cycle is greatly extended. On the other hand, the hole depth adjustment depends on manual operation, which is not only cumbersome, but also difficult to control the depth accurately, resulting in uneven hole depths. Fruit tree planting has strict requirements on hole depth. Too deep a hole can easily lead to root hypoxia, while too shallow a hole is not conducive to water absorption. This depth deviation will directly affect the survival rate of seedlings and their later growth.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a small hole digger for fruit tree planting, comprising a main frame, an adjustment mechanism provided inside the main frame, the adjustment mechanism comprising a spacing adjustment component and a height adjustment component, the spacing adjustment component comprising a mounting frame, grooves being provided on both sides of the inner wall of the mounting frame, a bidirectional threaded rod being rotatably connected to the inside of the left groove via a bearing, a servo motor being fixedly connected to the front end of the bidirectional threaded rod and the servo motor being fixedly mounted on the outside of the mounting frame, a limit rod being fixedly connected to the inside of the right groove, movable screw blocks being threaded to both ends of the surface of the bidirectional threaded rod, a limit block being slidably connected to the surface of the limit rod, a support plate being fixedly connected between the opposite sides of the limit block and the movable screw block, a drive motor being fixedly mounted on the top of the support plate, the output shaft of the drive motor passing through the support plate and being fixedly connected to a spiral drill bit.

[0008] Preferably, the height adjustment assembly includes an electric cylinder, which is fixedly installed on the top of the main frame, and the telescopic end of the electric cylinder passes through the main frame and is fixedly connected to a lifting plate.

[0009] Preferably, a connecting rod is fixedly connected to the bottom of the lifting plate, and the bottom of the connecting rod is fixedly connected to the top of the mounting frame.

[0010] Preferably, vertical grooves are provided on both sides of the inner wall of the main frame, and vertical rods are fixedly connected inside the vertical grooves. Guide blocks are slidably connected to the surface of the vertical rods, and the two guide blocks are fixedly connected to the front and rear sides of the mounting frame, respectively.

[0011] Preferably, a stabilizing bar is welded to the bottom of the mounting frame, and the number of the stabilizing bars is set to four and they are arranged in a rectangular shape.

[0012] Preferably, the bottom end of the stabilizer bar is tapered, and the bottom end of the stabilizer bar is lower than the bottom end of the auger bit.

[0013] Preferably, the auger drill bit is made of wear-resistant steel and its surface is coated with a ceramic anti-stick coating.

[0014] Preferably, both sides of the main frame are rotatably connected to movable wheels via bearings, and a handrail is welded to the front side of the main frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This application sets up a spacing adjustment component, which allows two auger drill bits to work simultaneously, improving digging efficiency. At the same time, it enables flexible adjustment of the spacing between the two auger drill bits, allowing for precise setting of planting spacing according to the needs of different fruit tree varieties or growth stages. This eliminates the need for frequent repositioning of equipment, significantly improving work efficiency and meeting the requirements for different plant spacing in large-scale orchard planting. 2. This application incorporates a height adjustment component. When the electric cylinder is working, its telescopic end moves the lifting plate up and down. The lifting plate, through a connecting rod, drives the mounting frame, the entire spacing adjustment component, and the auger drill bit to move up and down synchronously. Compared to existing equipment that relies on manual depth adjustment, this method is not only simple to operate but also allows for precise control of the auger drill bit's penetration depth, ensuring that all pits are at the same depth. This avoids problems such as root hypoxia or insufficient water absorption caused by depth deviations, which helps improve seedling survival rates and ensures good growth of the fruit trees in the later stages. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the small hole digger for fruit tree planting according to this utility model; Figure 2 This utility model Figure 1 A bottom view; Figure 3 This is a schematic diagram of the height adjustment component of this utility model; Figure 4 This is a schematic diagram of the spacing adjustment component of this utility model; Figure 5 This utility model Figure 1 Enlarged diagram of point A in the middle.

[0017] In the diagram, 1. Main frame; 2. Adjustment mechanism; 21. Spacing adjustment component; 211. Mounting frame; 212. Groove; 213. Bidirectional threaded rod; 214. Servo motor; 215. Limiting rod; 216. Moving screw block; 217. Limiting block; 218. Support plate; 22. Height adjustment component; 221. Electric cylinder; 222. Lifting plate; 223. Connecting rod; 3. Drive motor; 4. Spiral drill bit; 5. Vertical groove; 6. Vertical rod; 7. Guide block; 8. Stabilizing rod; 9. Moving wheel; 10. Handrail. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-5 The present invention provides the following technical solution: A small hole digger for fruit tree planting includes a main frame 1. An adjustment mechanism 2 is installed inside the main frame 1. The adjustment mechanism 2 includes a spacing adjustment component 21 and a height adjustment component 22. The spacing adjustment component 21 includes a mounting frame 211. Grooves 212 are formed on both sides of the inner wall of the mounting frame 211. A bidirectional threaded rod 213 is rotatably connected to the inside of the left groove 212 via a bearing. A servo motor 214 is fixedly connected to the front end of the bidirectional threaded rod 213 and is fixedly mounted on the outside of the mounting frame 211. A limit rod 215 is fixedly connected to the inside of the right groove 212. Moving screw blocks 216 are threaded to both ends of the surface of the bidirectional threaded rod 213. A limit block 217 is slidably connected to the surface of the limit rod 215. A support plate 218 is fixedly connected between the opposite sides of the limit block 217 and the moving screw block 216. A drive motor 3 is fixedly installed on the top of the support plate 218. The output shaft of the drive motor 3 passes through the support plate 218 and is fixedly connected to a spiral drill bit 4.

[0020] In this embodiment: By setting the spacing adjustment component 21, the mounting frame 211 serves as the basic load-bearing structure of the spacing adjustment component 21. The grooves 212 on both sides of its inner wall provide a stable installation space for the bidirectional threaded rod 213 and the limiting rod 215, while providing a closed guiding environment for the movement of the moving screw block 216, the limiting block 217, and the support plate 218, ensuring the stability of the adjustment process. The bidirectional threaded rod 213 has opposite thread directions at both ends. When the servo motor 214 drives it to rotate, it can drive the moving screw blocks 216 at both ends to move closer or further apart along the threaded rod. The servo motor 214 can provide a power source for spacing adjustment and can precisely control the bidirectional threaded rod 213. The rotation direction and angle of rod 13 enable precise adjustment of the distance between the two auger bits 4, meeting the precise setting requirements of different plant spacings. The limiting rod 215 serves as a guide and limiter. The limiting block 217 and the moving screw block 216, which are slidably connected to its surface, are fixed on both sides of the support plate 218, preventing the support plate 218 from shifting with the rotation of the bidirectional threaded rod 213. This ensures that the support plate 218 and the auger bit 4 always move smoothly along a straight line, guaranteeing the linearity and stability of the adjustment process. When the moving screw block 216 moves, it can directly drive the support plate 218 and the drive motor 3 and the auger bit 4 above it to move synchronously, thereby achieving synchronous distance adjustment of the two auger bits 4.

[0021] Specifically, such as Figure 3 As shown, the height adjustment component 22 includes an electric cylinder 221, which is fixedly installed on the top of the main frame 1. The telescopic end of the electric cylinder 221 passes through the main frame 1 and is fixedly connected to a lifting plate 222.

[0022] Specifically, such as Figure 3 As shown, a connecting rod 223 is fixedly connected to the bottom of the lifting plate 222, and the bottom of the connecting rod 223 is fixedly connected to the top of the mounting frame 211.

[0023] Specifically, such as Figure 5 As shown, vertical grooves 5 are provided on both sides of the inner wall of the main frame 1. Vertical rods 6 are fixedly connected inside the vertical grooves 5. Guide blocks 7 are slidably connected to the surface of the vertical rods 6, and the two guide blocks 7 are fixedly connected to the front and rear sides of the mounting frame 211 respectively.

[0024] In this embodiment: With the above configuration, the electric cylinder 221, as the power source for height adjustment, is fixedly installed on the top of the main frame 1. Its telescopic movement provides a stable driving force, allowing for precise control of the telescopic amount, thereby accurately adjusting the height of the lifting plate 222. This ensures precise control of the digging depth and is more efficient and accurate than manual adjustment. The lifting plate 222 can receive the power transmission from the electric cylinder 221. When the electric cylinder 221 telescopicates, the lifting plate 222 moves up and down accordingly, transmitting the power of the electric cylinder 221 to the connecting rod 223, which in turn drives the mounting frame 211, the entire spacing adjustment assembly 21, and the auger drill bit 4. Synchronous lifting is the intermediate carrier for power transmission. The connecting rod 223 is used to connect the lifting plate 222 and the mounting frame 211, which plays a role in force transmission. The up and down movement of the lifting plate 222 is transmitted to the mounting frame 211 through the connecting rod 223, so that the mounting frame 211 drives the spacing adjustment component 21, the drive motor 3 and the auger drill bit 4 to rise and fall together, thereby adjusting the soil penetration depth of the auger drill bit 4 and ensuring the stability and continuity of power transmission. The vertical groove 5 and the vertical rod 6 can limit the movement range of the guide block 7, ensuring that the guide block 7 can only slide up and down along the vertical groove 5, ensuring that the auger drill bit 4 can enter the soil vertically and improve the quality of digging.

[0025] Specifically, such as Figure 3 As shown, a stabilizing bar 8 is welded to the bottom of the mounting frame 211. The number of stabilizing bars 8 is set to four and they are arranged in a rectangular shape.

[0026] Specifically, such as Figure 3 As shown, the bottom end of the stabilizer bar 8 is tapered, and the bottom end of the stabilizer bar 8 is lower than the bottom end of the auger bit 4.

[0027] In this embodiment: Through the above settings, the stabilizing rod 8 is a supporting component at the bottom of the mounting frame 211. Its core function is to enhance the overall stability of the equipment during pit digging. When the auger drill bit 4 rotates at high speed into the soil, it generates an upward reaction force and lateral vibration. The stabilizing rod 8 can offset part of the reaction force and vibration through contact with the soil, preventing the equipment from shifting or tipping over. Furthermore, the design that the bottom of the stabilizing rod 8 is lower than the bottom of the auger drill bit 4 ensures that the stabilizing rod 8 has been inserted into the soil and formed a stable support before the auger drill bit 4 begins to dig the pit. When the auger drill bit 4 rotates to dig, the stabilizing rod 8 can fix the position of the equipment in advance, avoiding the equipment from sinking or shifting due to the driving force of the auger drill bit 4, and ensuring the accuracy of the pit position. At the same time, during the pit digging process, the stabilizing rod 8 is always in a supporting state, providing a stable working benchmark for the auger drill bit 4, and ensuring the verticality and forming quality of the pit.

[0028] Specifically, such as Figure 1 As shown, the auger drill bit 4 is made of wear-resistant steel and its surface is coated with a ceramic anti-stick coating.

[0029] Specifically, such as Figure 1 As shown, both sides of the main frame 1 are rotatably connected to movable wheels 9 via bearings, and a handrail 10 is welded to the front side of the main frame 1.

[0030] In this embodiment: the auger drill bit 4 is made of wear-resistant steel, which has high hardness and wear resistance, and can withstand the impact and friction of hard objects such as gravel and tree roots in the soil. This can significantly extend the service life of the auger drill bit 4, reduce the replacement frequency due to wear, and reduce equipment maintenance costs. The surface of the auger drill bit 4 is coated with a ceramic anti-stick coating, which has extremely low surface energy and good hydrophobicity. This effectively reduces the adhesion of sticky soil to the surface of the auger drill bit 4, ensuring that the auger drill bit 4 always maintains good soil removal capacity, reducing downtime for cleaning, and improving the continuity and efficiency of operation. By setting up a handrail frame 10 and moving wheels 9, the moving wheels 9 provide a convenient way to move the equipment. The operator can push the handrail frame 10 to move the equipment in the orchard, improving the mobility and operating range of the equipment.

[0031] Working principle: First, adjust the entire equipment to the area to be dug according to the planting plan. Then, start the servo motor 214, which drives the bidirectional threaded rod 213 to rotate, causing the two moving screw blocks 216 to move in opposite directions along the bidirectional threaded rod 213. When the moving screw blocks 216 move, they drive the limit block 217, support plate 218, drive motor 3, and auger drill bit 4 to move synchronously until the distance between the two auger drill bits 4 meets the requirements for fruit tree planting spacing. Then, turn off the servo motor 214 to complete the positioning. After the equipment is in place, start the drive motor 3 and electric cylinder 221 simultaneously. The output shaft of the drive motor 3 drives the auger drill bit 4 to rotate at high speed. The telescopic end of the electric cylinder 221 pushes the lifting plate 222 downward. The lifting plate 222 drives the mounting frame 211 and the entire spacing adjustment assembly 21 to descend synchronously through the connecting rod 223. Since the bottom of the stabilizing rod 8 is lower than the auger drill bit 4, the equipment is positioned in a more stable manner. At the bottom, when the auger bit 4 enters the soil, the four conical stabilizing rods 8 at the bottom of the mounting frame 211 are pre-pressed down and inserted into the soil. The rectangularly distributed stabilizing rods 8 will form a stable support, preventing the equipment from shifting or tipping over due to the vibration or reaction force generated by the rotation of the auger bit 4 during subsequent digging, thereby improving stability. The wear-resistant steel auger bit 4 will cut the soil during rotation, and at the same time, the spiral structure will transport the broken soil upwards and discharge it. During the operation, the stabilizing rods 8 can continuously provide support to ensure that the pit is formed vertically. When the auger bit 4 enters the soil to the preset depth, the electric cylinder 221 is turned off to complete the digging work. After the digging is completed, the drive motor 3 is turned off first, and then the electric cylinder 221 is turned on to drive the lifting plate 222 to rise, so that the auger bit 4 is removed from the pit and reset to the initial height. Then, the operator pushes the handrail frame 10 to move the equipment to the next pit and repeats the above steps for continuous operation.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small hole digger for fruit tree planting, comprising a main frame (1), characterized in that: An adjustment mechanism (2) is provided inside the main frame (1). The adjustment mechanism (2) includes a spacing adjustment component (21) and a height adjustment component (22). The spacing adjustment component (21) includes a mounting frame (211). Grooves (212) are provided on both sides of the inner wall of the mounting frame (211). A bidirectional threaded rod (213) is rotatably connected to the inside of the left groove (212) through a bearing. A servo motor (214) is fixedly connected to the front end of the bidirectional threaded rod (213), and the servo motor (214) is fixedly mounted on the mounting frame (211). On the outside of 11), a limiting rod (215) is fixedly connected inside the right groove (212). Both ends of the surface of the bidirectional threaded rod (213) are threaded with movable screw blocks (216). The surface of the limiting rod (215) is slidably connected with a limiting block (217). A support plate (218) is fixedly connected between the opposite sides of the limiting block (217) and the movable screw block (216). A drive motor (3) is fixedly installed on the top of the support plate (218). The output shaft of the drive motor (3) passes through the support plate (218) and is fixedly connected with a spiral drill bit (4).

2. The small hole digger for fruit tree planting according to claim 1, characterized in that: The height adjustment assembly (22) includes an electric cylinder (221), which is fixedly installed on the top of the main frame (1). The telescopic end of the electric cylinder (221) passes through the main frame (1) and is fixedly connected to a lifting plate (222).

3. A small hole digger for fruit tree planting according to claim 2, characterized in that: The bottom of the lifting plate (222) is fixedly connected to a connecting rod (223), and the bottom of the connecting rod (223) is fixedly connected to the top of the mounting frame (211).

4. A small hole digger for fruit tree planting according to claim 1, characterized in that: Vertical grooves (5) are provided on both sides of the inner wall of the main frame (1). A vertical rod (6) is fixedly connected inside the vertical groove (5). A guide block (7) is slidably connected to the surface of the vertical rod (6). The two guide blocks (7) are fixedly connected to the front and rear sides of the mounting frame (211) respectively.

5. A small hole digger for fruit tree planting according to claim 1, characterized in that: The bottom of the mounting frame (211) is welded with a stabilizing bar (8), and the number of the stabilizing bars (8) is set to four and they are arranged in a rectangular shape.

6. A small hole digger for fruit tree planting according to claim 5, characterized in that: The bottom end of the stabilizer (8) is tapered, and the bottom end of the stabilizer (8) is lower than the bottom end of the auger bit (4).

7. A small hole digger for fruit tree planting according to claim 1, characterized in that: The auger drill bit (4) is made of wear-resistant steel and its surface is coated with a ceramic anti-stick coating.

8. A small hole digger for fruit tree planting according to claim 1, characterized in that: Both sides of the main frame (1) are rotatably connected to moving wheels (9) via bearings, and a handrail frame (10) is welded to the front side of the main frame (1).

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