Unearthed conveying device for harvester
By designing a soil-excavating and conveying device, utilizing a climbing chain driven by a speed-regulating hydraulic motor and staggered soil-excavating hook components, the problems of complex structure and high damage rate of garlic harvesters were solved, achieving efficient and safe garlic harvesting.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-03-17
AI Technical Summary
Existing garlic harvesters are complex in structure, have high manufacturing costs, and cause high damage to garlic. Traditional manual root removal is inefficient and poses safety hazards.
Design a soil removal and conveying device for a harvester, which uses top and bottom shafts, sprockets, climbing chains and soil removal hooks. Driven by a speed-regulating hydraulic motor, it achieves flexible lifting and staggered soil removal hooks to reduce damage to garlic.
It achieves almost zero damage during garlic harvesting, increases feed rate, shortens the cutting platform length, and makes the machine more compact and flexible.
Smart Images

Figure CN223993972U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of harvester technology, specifically to a soil removal and conveying device for a harvester. Background Technology
[0002] my country is one of the major countries in garlic cultivation, processing, and export. In recent years, China's garlic exports have maintained a steady growth trend, and the garlic processing industry is booming. In the early stages of garlic processing, the garlic roots and stems need to be removed to meet the basic requirements of subsequent production processes. Traditional garlic root removal is mostly done manually, which is not only inefficient and results in a high rate of garlic damage, but also easily injures hands. Although my country has increased its investment in agricultural mechanization research in recent years, and garlic machinery has made some progress, existing garlic harvesters, such as combine harvesters that integrate harvesting and power units, suffer from problems such as complex manufacturing structures and high manufacturing costs. Utility Model Content
[0003] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a soil removal and conveying device for a harvester, including a top rotating shaft and a bottom rotating shaft, with sprockets respectively provided at both ends of the top rotating shaft and the bottom rotating shaft, and side climbing chains are wound around the sprockets on the same side of the top rotating shaft and the bottom rotating shaft, and the side climbing chains are connected by several climbing rods, with soil removal hook assemblies provided on the climbing rods, and a speed-regulating hydraulic motor connected to the top rotating shaft or the bottom rotating shaft to drive its rotation.
[0004] Furthermore, the climbing rods are arranged in pairs, and the soil removal hook assembly includes a main soil removal hook group spaced apart along the length of the climbing rod, and a secondary soil removal hook group located in the middle of the climbing rod. The main soil removal hook group and the secondary soil removal hook group are alternately arranged on each climbing rod group.
[0005] Furthermore, the main excavation hook group and the auxiliary excavation hook group contain single hook bodies with identical structures. Each single hook body includes a structural plate, one end of which is pointed, and the other end has a rod sleeve shaft connected to the climbing rod at its upper and lower ends.
[0006] Furthermore, both the upper and lower sides of the structural plate from the end of the rod sleeve shaft to the pointed end are upwardly convex arc-shaped surfaces.
[0007] Furthermore, the auxiliary excavation hook assembly includes two single hook bodies disposed in the middle of the climbing rod, and a central climbing chain is connected to the inner side of each single hook body of the auxiliary excavation hook assembly.
[0008] Furthermore, the outer side of the side climbing chain is provided with side guard plates that are connected to the top rotating shaft and the bottom rotating shaft respectively.
[0009] Furthermore, a soil-penetrating blade is also provided on the front side of the bottom of the side climbing chain. Several steel pipes are spaced apart on the side of the soil-penetrating blade near the side climbing chain. A flexible rod is provided on the end of the steel pipe away from the side climbing chain. The soil-exiting hook assembly passes through the gap between the steel pipes during its movement.
[0010] The advantages of this invention compared to existing technologies are as follows: This invention is installed at the front end of the harvester. The soil-penetrating blade digs under the garlic bulb, and in conjunction with the side and center climbing chains, the flexible transition and lifting coordination ensure no garlic is missed. The climbing chain of this invention is driven by a speed-regulating hydraulic motor, allowing for adjustable speed. Because the speed of the speed-regulating hydraulic motor is not high, the garlic bulb can be slowly hooked and lifted from below by the nylon soil-penetrating hooks, resulting in almost zero damage to the garlic. By staggering the main and auxiliary soil-penetrating hook groups, the lifting and feeding capacity is increased, which shortens the length of the header, making the machine more compact and flexible in operation. It also solves the problem of excessively long headers in combined harvesting. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the front structure of a soil-excavating conveying device for a harvester according to the present invention.
[0012] Figure 2 This is a schematic diagram of the internal structure of a soil removal and conveying device for a harvester according to the present invention.
[0013] Figure 3 This is a schematic diagram of the rear structure of a soil-extracting and conveying device for a harvester according to the present invention.
[0014] Figure 4 This is a schematic diagram of the structure of a single hook body in a soil removal and conveying device for a harvester according to this utility model. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0016] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they 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, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0017] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0018] In the description of the embodiments of this utility model, "a plurality of" means at least two.
[0019] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 according to the specific circumstances.
[0020] Example
[0021] A soil removal and conveying device for a harvester includes a top shaft 1 and a bottom shaft 2. Sprockets 3 are respectively installed at both ends of the top shaft 1 and the bottom shaft 2. Side climbing chains 4 are wound around the sprockets 3 on the same side of the top shaft 1 and the bottom shaft 2. The side climbing chains 4 are connected by several climbing rods 5, and soil removal hook assemblies 6 are installed on the climbing rods 5. Side guard plates 10 are respectively installed on the outer side of the side climbing chains 4 and are connected to the top shaft 1 and the bottom shaft 2 for transmission. A speed-regulating hydraulic motor that drives the rotation of the top shaft 1 or the bottom shaft 2 is connected to the top shaft 1 or the bottom shaft 2.
[0022] The climbing rods 5 are arranged in pairs. The excavation hook assembly 6 includes a main excavation hook group 601 spaced along the length of the climbing rod 5 and a secondary excavation hook group 602 located in the middle of the climbing rod 5. The main excavation hook group 601 and the secondary excavation hook group 602 are staggered on each climbing rod 5. The main excavation hook group 601 and the secondary excavation hook group 602 contain single hook bodies 603 with the same structure. The single hook body 603 includes a structural plate 603a. One end of the structural plate 603a is pointed, and the upper and lower ends of the other end are respectively provided with rod sleeve shafts 603b that are connected to the climbing rod 5. The upper and lower sides of the structural plate 603a from the rod sleeve shaft end to the pointed end are both upwardly convex arc surfaces. The secondary excavation hook group 602 includes two single hook bodies 603 located in the middle of the climbing rod 5. The inner side of the single hook body 603 of the secondary excavation hook group 602 is respectively connected to the central climbing chain 11.
[0023] A soil-penetrating blade 7 is also provided on the front side of the bottom of the side climbing chain 4. Several steel pipes 8 are spaced apart on the side of the soil-penetrating blade 7 near the side climbing chain 4. A flexible rod 9 is provided on the end of the steel pipe 8 away from the side climbing chain 4. The soil-exiting hook assembly 6 passes through the gap between the steel pipes 8 during its movement.
[0024] This device is part of the harvester's header, primarily used for removing root crops. In practice, it is installed at the front of the harvester. The cutting blade digs under the garlic bulb without damaging it. The main and auxiliary hook assemblies point upwards and move with the side and center lifting chains, ensuring a smooth transition and coordinated lifting action that prevents garlic from slipping through. In this embodiment, the main and auxiliary hook assemblies are made of nylon. The lifting chains are driven by a speed-regulating hydraulic motor, allowing for adjustable speed. Because the speed-regulating hydraulic motor operates at a low speed, the garlic bulbs are slowly hooked and lifted from below by the nylon hooks, resulting in almost zero damage. By staggering the main and auxiliary hook assemblies, the lifting and feeding capacity is increased, shortening the header length and making the machine more compact and flexible. This also solves the problem of excessively long headers in combined harvesting operations.
[0025] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An unearthing and conveying device for a harvesting machine, characterized in that The utility model provides a kind of earth boring machine, including top pivot and bottom pivot, top pivot, bottom pivot both ends are provided with sprocket respectively, the sprocket between top pivot, bottom pivot same side is cooperated with and is provided with side climbing chain, the side climbing chain is connected by several climbing poles between, the climbing pole is provided with unearthed hook assembly;Top pivot or bottom pivot is connected with the speed regulating hydraulic motor that drives its rotation.
2. An unearthing and conveying device for a harvesting machine according to claim 1, characterized in that The climbing poles are two two groups, the unearthed hook assembly includes main unearthed hook group that is arranged at interval along the length direction of climbing pole, and vice unearthed hook group that is arranged in the middle of climbing pole, the main unearthed hook group, vice unearthed hook group are staggered on each group of climbing poles.
3. An unearthing and conveying device for a harvesting machine according to claim 2, characterized in that The main unearthed hook group, vice unearthed hook group include the single hook body of same structure, the single hook body includes body plate, one end of the body plate is sharp head, and the other end is provided with rod sleeve shaft on upper and lower ends respectively and is connected with climbing pole.
4. An unearthing and conveying device for a harvesting machine according to claim 3, characterized in that The body plate is upwardly convex arc surface from rod sleeve shaft end to sharp head end on upper and lower sides.
5. An unearthing and conveying device for a harvester according to claim 2, characterized in that, The vice unearthed hook group includes two single hook bodies arranged in the middle of climbing pole, and the inner side of single hook body of the vice unearthed hook group is connected with center climbing chain respectively.
6. An unearthing and conveying device for a harvester according to claim 1, characterized in that, The outer side of side climbing chain is provided with side guard plate driven connection with top pivot and bottom pivot respectively.
7. An unearthing and conveying device for a harvester according to claim 1, characterized in that, The bottom front side of side climbing chain is further provided with earth entering moving knife, and the side near side climbing chain of earth entering moving knife is provided with several steel pipes at interval, and the end of steel pipe far from side climbing chain is provided with flexible rod, and the gap between steel pipes is passed during the movement of unearthed hook assembly.