A hole digging device for pear tree planting with convenient adjustment
By introducing a damping cylinder and a limiting friction rod structure into the hole-digging device for pear tree planting, the problems of equipment wear or operational fatigue were solved, the vibration buffering effect was improved and precisely adjusted, and the issues of equipment lifespan and standardization of pear tree planting were resolved, thus improving the equipment lifespan and the standardization of pear tree planting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGYUAN ZIYI AGRICULTURAL DEVELOPMENT CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-21
AI Technical Summary
The shock absorption mechanism of existing pear tree planting hole-digging devices is relatively simple, with limited shock absorption effect, and long-term use can easily lead to equipment wear and tear; some models are not equipped with a precise drilling depth adjustment mechanism, which affects the accurate control of the planting pit depth and reduces the standardization of pear tree planting.
The structure employs a damping cylinder and a limiting friction rod. By combining damping oil and a friction sleeve, it buffers the vibration during drilling. The drilling depth can be precisely adjusted through the cooperation of the limiting cylinder and the threaded rod.
It improves the vibration damping effect during drilling, ensures precise control of drilling depth, and extends the service life of the equipment and the standardization of pear tree planting.
Smart Images
Figure CN224521722U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hole-digging devices, specifically a hole-digging device for planting pear trees that is easy to adjust. Background Technology
[0002] The pear tree planting hole-digging device is a high-efficiency agricultural machine specifically designed for orchard planting. It is mainly used for quickly and accurately digging planting holes. The device typically consists of a power mechanism (such as a diesel engine or electric motor), a rotary drill bit, a depth adjustment rod, and a stabilizing support. It can adapt to different soil conditions and dig standard planting holes with a diameter of 30-50cm and a depth of 60-80cm. Compared with manual digging, its efficiency is increased by 5-8 times, and it can keep the hole walls neat, which is conducive to the spread of pear tree roots. Some intelligent models are also equipped with a laser positioning system to ensure accurate spacing between rows and plants. It is suitable for large-scale pear orchard construction, significantly reduces labor intensity, and is an important piece of equipment for modern standardized orchard planting.
[0003] The prior art patent application number is 202220332282.5, and the patent name is: A seedling planting hole digging device for greening projects. It includes a base, a support plate fixedly connected to the upper rear part of the base, a driving device fixedly connected to the upper rear part of the support plate, movable wheels fixedly connected to the four corners of the lower end of the base, a groove in the middle of the front end of the base, a control plate fixedly connected to the middle of the right end of the support plate, a handle fixedly connected to the front and rear of the left end of the support plate, two round rods fixedly connected to the front of the upper end of the base, and the two round rods are symmetrically distributed from left to right, a spraying device fixedly connected to the right of the upper end of the base, and a reinforcing frame fixedly connected to the middle of the outer side of the spraying device. The present invention relates to a seedling planting hole digging device for greening projects. By setting a drive device and a spraying device on the entire device, it can be adjusted according to different digging depths. It is simple to operate, convenient to use, beneficial for seedling planting, and highly applicable. However, its shock absorption mechanism is relatively simple, relying only on springs to buffer the vibration generated during drill rod operation, resulting in limited shock absorption effect. Long-term use can easily lead to equipment wear or operator fatigue. In addition, some models are not equipped with a precise drilling depth adjustment mechanism, making it difficult to accurately control the depth of the planting hole, which affects the standardization of pear tree planting. Therefore, we propose a digging hole device for pear tree planting that is easy to adjust. Utility Model Content
[0004] The purpose of this invention is to provide an easily adjustable hole-digging device for pear tree planting, addressing the shortcomings of the aforementioned background technology. This device features a simple shock-absorbing mechanism that relies solely on springs to buffer vibrations generated during drill rod operation, resulting in limited shock absorption and potential wear and tear or operator fatigue over extended periods. Furthermore, some models lack a precise drilling depth adjustment mechanism, making accurate control of the planting pit depth difficult and impacting the standardization of pear tree planting.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a pear tree planting hole-digging device that is easy to adjust, comprising a frame and two damping cylinders. The damping cylinders are fixedly connected to the top of the inner side wall of the frame. A first motor is fixedly connected to the top of the frame. The bottom end of the power output shaft of the first motor passes through the frame and extends to the inner side of the frame. A first threaded rod is fixedly connected to the bottom end of the power output shaft of the first motor. An mounting plate is screwed to the outer side of the first threaded rod. Two friction sleeves are embedded inside the mounting plate. Two limiting friction rods are fixedly connected to the bottom of the inner side wall of the frame.
[0006] As a further description of the above technical solution:
[0007] The top end of the limiting friction rod penetrates the mounting plate, and the outer side of the limiting friction rod contacts the friction sleeve. A second motor is fixedly connected to the top of the mounting plate.
[0008] As a further description of the above technical solution:
[0009] The bottom end of the power output shaft of the second motor passes through the mounting plate and extends to the bottom of the mounting plate. A drill rod is screwed to the bottom end of the power output shaft of the second motor. A third motor is fixedly connected to the top of the mounting plate. A second threaded rod is fixedly connected to the top end of the power output shaft of the third motor. A limit sleeve is screwed to the outer side of the second threaded rod.
[0010] As a further description of the above technical solution:
[0011] The bottom of the limiting cylinder passes through the mounting plate and extends to the bottom of the mounting plate. A limiting rod is fixedly connected to the top of the mounting plate. The top end of the limiting rod passes through the limiting cylinder, and the limiting rod is slidably connected to the limiting cylinder.
[0012] As a further description of the above technical solution:
[0013] The damping cylinder is filled with damping oil, and a sealing ring is bonded to the bottom end of the damping cylinder.
[0014] As a further description of the above technical solution:
[0015] The bottom end of the damping cylinder is movably connected to a connecting rod, the top end of the connecting rod passes through the damping cylinder and extends into the inner cavity of the damping cylinder, and the top end of the connecting rod is fixedly connected to a seepage plate.
[0016] As a further description of the above technical solution:
[0017] The top of the seepage plate has seepage holes around its circumference, and the seepage holes are evenly distributed. The bottom end of the connecting rod is fixedly connected to a connecting frame, and the connecting frame is fixedly connected to the mounting plate.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. This easily adjustable hole-digging device for pear tree planting works by starting a first motor to drive a first threaded rod to rotate, causing the mounting plate to descend and the drilling mechanism on the mounting plate to descend. Then, a second motor is started to drive a drill rod to rotate, causing the drill rod to drill. When the drill rod vibrates during drilling, it moves longitudinally through a connecting rod that is movably connected to a damping cylinder. This causes a seepage plate mounted on the connecting rod to squeeze the damping oil inside the damping cylinder, allowing the damping oil to flow through the seepage holes on the seepage plate to generate damping and buffer the vibration. At the same time, the limiting friction rod mounted on the frame also rubs against the friction sleeve inside the mounting plate to generate damping, further buffering the vibration. This effectively improves the buffering effect on the vibration generated during drilling.
[0020] 2. This easily adjustable hole-digging device for pear tree planting uses a third motor to drive the second threaded rod to rotate. This causes a limiting cylinder mounted on the second threaded rod to move longitudinally along with the rotation of the second threaded rod, blocking and limiting the drill rod inside the limiting cylinder, thus restricting the drill rod's penetration depth and adjusting the drilling depth according to the hole-digging requirements. Attached Figure Description
[0021] Figure 1 This is a front-view three-dimensional structural diagram of a hole-digging device for planting pear trees that is easy to adjust, as proposed in this utility model.
[0022] Figure 2 This is a bottom-view three-dimensional structural diagram of a hole-digging device for planting pear trees that is easy to adjust, as proposed in this utility model.
[0023] Figure 3 This is a cross-sectional view of the drilling mechanism of a hole-digging device for planting pear trees that is easy to adjust, as proposed in this utility model.
[0024] Figure 4 This is a front view schematic diagram of the adjustable hole-digging device for planting pear trees proposed in this utility model;
[0025] Figure 5 This is a left-side plan view of the adjustable hole-digging device for planting pear trees proposed in this utility model.
[0026] In the diagram: 100, frame; 110, first motor; 111, first threaded rod; 120, mounting plate; 121, friction sleeve; 130, limiting friction rod; 140, second motor; 141, drill rod; 150, third motor; 151, second threaded rod; 160, limiting cylinder; 170, limiting rod; 200, damping cylinder; 210, damping oil; 220, sealing ring; 230, connecting rod; 231, seepage plate; 232, seepage hole; 240, connecting frame. Detailed Implementation
[0027] 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.
[0028] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] This utility model provides an easily adjustable hole-digging device for pear tree planting. (For beneficial effects, please refer to [link / reference]). Figure 1-5 It includes a frame 100 and two damping cylinders 200;
[0031] Please refer to it again. Figure 1-5 A first motor 110 is fixedly connected to the top of the frame 100. The bottom end of the power output shaft of the first motor 110 passes through the frame 100 and extends to the inner side of the frame 100. A first threaded rod 111 is fixedly connected to the bottom end of the power output shaft of the first motor 110. A mounting plate 120 is screwed to the outer side of the first threaded rod 111. Two friction sleeves 121 are embedded inside the mounting plate 120. Two limiting friction rods 130 are fixedly connected to the bottom of the inner side wall of the frame 100. The top end of the limiting friction rod 130 passes through the mounting plate 120, and the outer side of the limiting friction rod 130 contacts the friction sleeve 121. A second motor 140 is fixedly connected to the top of the mounting plate 120. The bottom end of the power output shaft of the second motor 140 passes through the mounting plate 120 and extends to the bottom of the mounting plate 120. A drill rod is screwed to the bottom end of the power output shaft of the second motor 140. 141. A third motor 150 is fixedly connected to the top of the mounting plate 120. A second threaded rod 151 is fixedly connected to the top of the power output shaft of the third motor 150. A limiting cylinder 160 is screwed to the outer side of the second threaded rod 151. The bottom of the limiting cylinder 160 passes through the mounting plate 120 and extends to the bottom of the mounting plate 120. A limiting rod 170 is fixedly connected to the top of the mounting plate 120. The top of the limiting rod 170 passes through the limiting cylinder 160, and the limiting rod 170 and the limiting cylinder 160 are slidably connected. By starting the third motor 150, the second threaded rod 151 is driven to rotate, so that the limiting cylinder 160 installed on the second threaded rod 151 moves longitudinally with the rotation of the second threaded rod 151, blocking and limiting the drill rod 141 inside the limiting cylinder 160, thus limiting the drilling depth of the drill rod 141 and adjusting the drilling depth.
[0032] In summary, the drilling depth can be adjusted according to the excavation requirements.
[0033] Please refer to it again. Figure 1-5The damping cylinder 200 is fixedly connected to the top of the inner wall of the frame 100. The damping cylinder 200 is filled with damping oil 210. A sealing ring 220 is bonded to the bottom end of the damping cylinder 200. A connecting rod 230 is movably connected to the bottom end of the damping cylinder 200. The top end of the connecting rod 230 passes through the damping cylinder 200 and extends into the inner cavity of the damping cylinder 200. A seepage plate 231 is fixedly connected to the top end of the connecting rod 230. Seepage holes 232 are evenly distributed around the top of the seepage plate 231. A connecting frame 240 is fixedly connected to the bottom end of the connecting rod 230. The connecting frame 240 is fixedly connected to the mounting plate 120. By starting the first motor 110, the first threaded rod 111 is driven to rotate, causing the mounting plate 120 to rotate. The 20 is lowered, causing the drilling mechanism on the mounting plate 120 to descend. Then, the second motor 140 is started to drive the drill rod 141 to rotate, so that the drill rod 141 can perform drilling. When the drill rod 141 vibrates during drilling, it moves longitudinally through the connecting rod 230, which is movably connected to the damping cylinder 200. This causes the seepage plate 231 installed on the connecting rod 230 to squeeze the damping oil 210 inside the damping cylinder 200. The damping oil 210 flows through the seepage holes 232 on the seepage plate 231 to generate damping and buffer the vibration. At the same time, the limiting friction rod 130 installed on the frame 100 will also rub against the friction sleeve 121 inside the mounting plate 120 to generate damping, further buffering the vibration.
[0034] In summary, this method can effectively improve the buffering effect against vibrations generated during drilling.
[0035] In practical use, those skilled in the art activate the third motor 150 to drive the second threaded rod 151 to rotate, causing the limiting cylinder 160 mounted on the second threaded rod 151 to move longitudinally following the rotation of the second threaded rod 151. This blocks and limits the drill rod 141 located inside the limiting cylinder 160, restricting the drilling depth of the drill rod 141 and thus adjusting the drilling depth. Activating the first motor 110 to drive the first threaded rod 111 to rotate causes the mounting plate 120 to descend, lowering the drilling mechanism located on the mounting plate 120. Then, the second motor 140 is activated to drive the drill rod... 141 is rotated to make drill rod 141 drill. When drill rod 141 vibrates during drilling, it moves longitudinally through connecting rod 230 which is movably connected to damping cylinder 200. This causes the seepage plate 231 installed on connecting rod 230 to squeeze damping oil 210 inside damping cylinder 200, causing damping oil 210 to flow through seepage holes 232 on seepage plate 231 to generate damping and buffer the vibration. At the same time, the limiting friction rod 130 installed on frame 100 will also rub against friction sleeve 121 in mounting plate 120 to generate damping, further buffering the vibration.
[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A hole-digging device for planting pear trees that is easy to adjust, characterized in that: The device includes a frame (100) and two damping cylinders (200). The damping cylinders (200) are fixedly connected to the top of the inner wall of the frame (100). A first motor (110) is fixedly connected to the top of the frame (100). The bottom end of the power output shaft of the first motor (110) passes through the frame (100) and extends to the inner side of the frame (100). A first threaded rod (111) is fixedly connected to the bottom end of the power output shaft of the first motor (110). A mounting plate (120) is screwed to the outer side of the first threaded rod (111). Two friction sleeves (121) are embedded inside the mounting plate (120). Two limiting friction rods (130) are fixedly connected to the bottom of the inner wall of the frame (100).
2. The easily adjustable hole-digging device for pear tree planting according to claim 1, characterized in that: The top end of the limiting friction rod (130) penetrates the mounting plate (120), and the outer side of the limiting friction rod (130) contacts the friction sleeve (121). A second motor (140) is fixedly connected to the top of the mounting plate (120).
3. The easily adjustable hole-digging device for pear tree planting according to claim 2, characterized in that: The bottom end of the power output shaft of the second motor (140) passes through the mounting plate (120) and extends to the bottom of the mounting plate (120). A drill rod (141) is screwed to the bottom end of the power output shaft of the second motor (140). A third motor (150) is fixedly connected to the top of the mounting plate (120). A second threaded rod (151) is fixedly connected to the top end of the power output shaft of the third motor (150). A limit sleeve (160) is screwed to the outer side of the second threaded rod (151).
4. The easily adjustable hole-digging device for pear tree planting according to claim 3, characterized in that: The bottom of the limiting cylinder (160) passes through the mounting plate (120) and extends to the bottom of the mounting plate (120). The top of the mounting plate (120) is fixedly connected to a limiting rod (170). The top of the limiting rod (170) passes through the limiting cylinder (160), and the limiting rod (170) is slidably connected to the limiting cylinder (160).
5. The easily adjustable hole-digging device for pear tree planting according to claim 1, characterized in that: The damping cylinder (200) is filled with damping oil (210), and a sealing ring (220) is bonded to the bottom end of the damping cylinder (200).
6. The easily adjustable hole-digging device for pear tree planting according to claim 5, characterized in that: The bottom end of the damping cylinder (200) is movably connected to a connecting rod (230), the top end of the connecting rod (230) passes through the damping cylinder (200) and extends into the inner cavity of the damping cylinder (200), and the top end of the connecting rod (230) is fixedly connected to a seepage plate (231).
7. The easily adjustable hole-digging device for pear tree planting according to claim 6, characterized in that: The top of the seepage plate (231) is provided with seepage holes (232) around the perimeter, and the seepage holes (232) are evenly distributed. The bottom end of the connecting rod (230) is fixedly connected to a connecting frame (240), and the connecting frame (240) is fixedly connected to the mounting plate (120).