Stock bin device capable of adjusting spacing size and height for Chinese chestnut shelling machine

Abstract

The utility model relates to the field of Chinese chestnut shelling processing equipment, and discloses a spacing and height adjustable stock bin device for a Chinese chestnut shelling machine, which comprises a stock bin and a main frame, the stock bin is detachably arranged in the main frame, the front end and the rear end of the stock bin are respectively provided with a plurality of sliding holes, and the sliding holes are communicated with the stock bin. The sliding holes are distributed in a fan shape with the center line of the stock bin as the circle center, and every two front-back corresponding sliding holes form a group. Adjusting sliding blocks capable of moving up and down are arranged at the front end and the rear end of the stock bin respectively, a supporting rod is arranged in each set of sliding holes in a penetrating mode, and the two ends of each supporting rod sequentially penetrate through the corresponding set of sliding holes and the adjusting sliding blocks and extend out of the stock bin. According to the utility model, the adaptability to Chinese chestnuts with different specifications such as large fruits and small fruits is obviously improved, the problem that the large fruits are broken due to too small gaps or the small fruits are not thoroughly stripped due to too large gaps is avoided, and the uniform and stable stripping effect is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of chestnut dehulling equipment, specifically to a hopper device with adjustable spacing and height for a chestnut dehulling machine. Background Technology

[0002] With the large-scale development of the chestnut industry, the traditional method of manually removing the chestnut husks can no longer meet the dual requirements of efficiency and appearance of modern processing plants. Especially during the peak season for chestnut harvesting in autumn, the uneven coverage of chestnut husks and the inconsistent strength of the shells seriously affect the efficiency of removing the husks.

[0003] Most chestnut dehulling machines on the market currently use a fixed hopper structure. A fixed gap is formed between the bottom of the hopper and the dehulling roller via a discharge plate. Chestnuts enter the dehulling zone by free fall, where they are dehulled by friction from rotating dehulling rollers or toothed discs. Some machines incorporate spring-loaded limiting devices at the pallet position to buffer the compressive force, but the overall structure remains primarily rigid dehulling. Its height and gap are usually set at the initial installation stage, lacking the ability to dynamically adjust the dehulling spacing.

[0004] Most existing chestnut dehulling machines use a fixed gap structure, which cannot adjust the dehulling gap according to the size difference of the chestnut hull. As a result, when processing chestnut raw materials of different sizes, large fruits are easily crushed, while small fruits are not completely dehulled. Utility Model Content

[0005] The purpose of this invention is to provide a hopper device with adjustable spacing and height for a chestnut dehulling machine, in order to solve the problem that existing dehulling equipment cannot adapt to chestnut hulls of different sizes, resulting in large fruits being easily crushed and small fruits not being completely dehulled.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a hopper device for a chestnut dehulling machine with adjustable spacing and height, comprising a hopper and a main frame. The hopper is detachably installed within the main frame. Several sliding holes are provided at both the front and rear ends of the hopper, arranged in a fan shape with the hopper's center line as the center. Two corresponding sliding holes at the front and rear ends form a group. Adjustable sliders that can move up and down are provided at both the front and rear ends of the hopper. A support rod passes through each group of sliding holes, with both ends of the support rod passing through the corresponding group of sliding holes and the adjusting slider, extending to the outside of the hopper. Two parallel fixed rods are provided inside the hopper. Connecting pieces are sleeved between several support rods, and the connecting pieces are connected to the support rods and fixed rods respectively through through holes at both ends. Both ends of the support rods are limited by limiting pins.

[0007] Preferably, the adjusting slider has two longitudinal connecting ears fixed on it, and a transverse connecting ear is detachably provided on the longitudinal connecting ears. An adjusting handle is fixed on the transverse connecting ear. Two graded limiting holes are respectively opened on the left and right sides of the main frame. The adjusting handle can be inserted into the graded limiting holes to realize graded limiting adjustment.

[0008] Preferably, two bearing seats are installed on the top surface of the main frame, and a drive shaft is rotatably arranged between the two bearing seats. A peeling roller is detachably arranged on the drive shaft, and a plurality of peeling teeth are fixed on the peeling roller. The plurality of peeling teeth are spirally staggered along the outer wall of the peeling roller.

[0009] Preferably, a sub-frame is fixed to the rear end of the main frame, a drive motor is mounted on the sub-frame, a first pulley is mounted on the output end of the drive motor, a second pulley is mounted on the rear end of the transmission shaft, and a belt body is wound between the first pulley and the second pulley.

[0010] Preferably, both the support rod and the fixing rod are movably fitted with sleeves, and one end of the peeling tooth is fixedly fitted with a protective sleeve.

[0011] Preferably, one end of the adjusting handle is fixed with a threaded rod, and a hand grip is threaded onto the threaded rod.

[0012] Compared with existing technologies, the adjustable spacing and height hopper device for a chestnut dehulling machine, which adopts the above-mentioned technical solution, has the following beneficial effects:

[0013] I. This utility model features adjustable sliders, support rods, and grading limit holes at the front and rear ends of the hopper, enabling graded adjustment of the hopper height. This allows for flexible adjustment of the dehulling gap according to the size of chestnut husks of different sizes. Compared to existing dehulling machines with fixed gap structures, this structure significantly improves adaptability to chestnuts of different sizes, such as large and small chestnuts, avoiding the problems of large chestnuts being crushed due to insufficient gaps or small chestnuts not being completely dehulled due to excessively large gaps, ensuring uniform and stable dehulling results.

[0014] II. This utility model constructs a three-dimensional stable frame by setting up connecting plates, fixing rods, and support rods. Combined with the fan-shaped arrangement of sliding holes, it ensures the synchronicity and structural stability of the support rods during the lifting and lowering process. At the same time, the protective sleeve on the top of the peeling teeth is made of flexible material, which can effectively buffer the mechanical impact during the peeling process, reduce damage to the chestnut surface, and greatly improve the yield and appearance integrity. It is especially suitable for chestnut products with high requirements for appearance.

[0015] Third, this utility model adopts a locking structure consisting of an adjustment handle, a threaded rod, and a hand grip, which can achieve a secure positioning by tightening after height adjustment, effectively preventing loosening or slippage during operation. Furthermore, the drive unit uses a transmission system consisting of a drive motor, pulleys, and a transmission belt, resulting in smooth transmission and low vibration. Combined with bearing housings, this improves the overall balance and durability of operation, reducing operational difficulty and enhancing the safety and service life of the equipment. Attached Figure Description

[0016] Figure 1 This is a perspective view of an embodiment.

[0017] Figure 2 This is a breakdown diagram of an embodiment.

[0018] Figure 3 This is a front view diagram of an embodiment.

[0019] Figure 4 This is a cross-sectional schematic diagram of the hopper and support rod in an embodiment.

[0020] In the diagram: 1. Hopper; 2. Main frame; 201. Bearing seat; 3. Sliding hole; 4. Adjusting slider; 5. Connecting piece; 6. Fixing rod; 7. Support rod; 701. Sleeve; 8. Longitudinal connecting ear; 9. Transverse connecting ear; 10. Adjusting handle; 101. Threaded rod; 102. Hand grip; 11. Grading limit hole; 12. Drive shaft; 13. Peeling roller; 14. Peeling teeth; 1401. Protective sleeve; 15. Sub-frame; 16. Drive motor; 17. First pulley; 18. Second pulley; 19. Belt body. Detailed Implementation

[0021] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1-4As shown, a chestnut dehulling machine uses an adjustable hopper device with adjustable spacing and height, comprising a hopper 1 and a main frame 2. The hopper 1 is detachably installed inside the main frame 2. Several sliding holes 3 are provided at both the front and rear ends of the hopper 1. The sliding holes 3 are distributed in a fan shape with the center line of the hopper 1 as the center, and two corresponding sliding holes 3 at the front and rear constitute a group. Adjustable sliders 4 that can move up and down are provided at both the front and rear ends of the hopper 1. A support rod 7 is inserted through each group of sliding holes 3. The two ends of the support rod 7 pass through the corresponding group of sliding holes 3 and the adjustment slider 4 in sequence, and extend to the outside of the hopper 1. Two parallel fixed rods 6 are provided inside the hopper 1. Connecting pieces 5 are sleeved between several support rods 7. The connecting pieces 5 are connected to the support rods 7 and the fixed rods 6 respectively through the through holes at both ends of their connecting pieces 5. The two ends of the support rods 7 are limited by limit pins (limit pins are not shown in the figure). Two longitudinal connecting ears 8 are fixed on the adjusting slider 4. A transverse connecting ear 9 is detachably provided on the longitudinal connecting ear 8. An adjusting handle 10 is fixed on the transverse connecting ear 9. Two graded limiting holes 11 are opened on the left and right sides of the main frame 2 respectively. The adjusting handle 10 can be inserted into the graded limiting hole 11 to realize graded limiting adjustment.

[0023] Before dehulling, the operator selects the appropriate height setting based on the size of the chestnut husk to be processed and inserts the adjusting handle 10 into the grading limiting holes 11 on both sides of the main frame 2. As the position of the adjusting handle 10 changes, the connected transverse connecting ears 9, longitudinal connecting ears 8, and adjusting slider 4 move vertically up and down as a whole, thereby driving multiple support rods 7 to move synchronously up and down along the fan-shaped trajectory of the sliding holes 3. Since the sliding holes 3 are grouped at the front and rear ends of the hopper 1 and distributed in a central fan shape, the raising and lowering of the support rods 7 will directly change the vertical gap between them and the peeling teeth 14.

[0024] When the support rod 7 is lowered to the lowest position, the awn removal gap is the largest, suitable for larger chestnut awns; when the support rod 7 is raised to the middle or highest position, a medium or smaller gap is formed to accommodate the positioning and awn removal needs of chestnut awns of different sizes. This height adjustment structure is not only easy to operate, but also provides precise positioning through graded limiting holes 11, ensuring stable awn removal effect and strong adaptability in actual operation.

[0025] like Figures 1-3 As shown, two bearing seats 201 are mounted on the top surface of the main frame 2. A drive shaft 12 is rotatably arranged between the two bearing seats 201. A peeling roller 13 is detachably mounted on the drive shaft 12. Several peeling teeth 14 are fixed on the peeling roller 13 and are spirally staggered along the outer wall of the peeling roller 13. A secondary frame 15 is fixed to the rear end of the main frame 2. A drive motor 16 is mounted on the secondary frame 15. A first pulley 17 is mounted on the output end of the drive motor 16. A second pulley 18 is mounted on the rear end of the drive shaft 12. A belt body 19 is wound between the first pulley 17 and the second pulley 18.

[0026] In use, to ensure the linkage and structural stability of the support rods 7 during the height adjustment of the hopper 1, connecting pieces 5 are provided between the support rods 7, and are connected to the fixed rod 6 and the adjacent support rod 7 respectively through through holes at both ends. Since the sliding holes 3 are distributed in a fan shape, the angle of the support rod 7 will deflect slightly with the change of height. Therefore, the connecting piece 5 adopts an elliptical hole structure on the side near the support rod 7 to achieve sliding fit and adapt to the angle adjustment of the support rod 7 during lifting and lowering; while the side near the fixed rod 6 has a circular through hole, which is rigidly connected to the stationary fixed rod 6 to form an overall stable frame.

[0027] Meanwhile, a bearing seat 201 is provided at the top of the main frame 2, and a drive shaft 12 is rotatably mounted between the two bearing seats 201. A peeling roller 13 is provided on the drive shaft 12, and the outer wall of the peeling roller 13 has multiple peeling teeth 14 arranged in a spiral staggered manner. During operation, the peeling roller 13 rotates with the drive shaft 12, and the chestnut husks supported by multiple support rods 7 gradually contact the peeling teeth 14 below, thereby realizing the peeling operation. Since the lifting and lowering of the support rods 7 is directly related to the position of the chestnuts, the contact pressure between the peeling roller 13 and the chestnuts can be precisely controlled by height adjustment, thereby improving the peeling efficiency and product integrity rate.

[0028] like Figures 1-3 As shown, sleeves 701 are movably fitted on both the support rod 7 and the fixing rod 6. A protective sleeve 1401 is fixedly fitted on one end of the peeling tooth 14. A threaded rod 101 is fixed to one end of the adjusting handle 10, and a hand grip 102 is threadedly connected to the threaded rod 101.

[0029] To further enhance the protection of chestnuts during the dehulling process, a protective sleeve 1401 is fitted onto the top of the dehulling teeth 14. This protective sleeve 1401 is made of flexible material and can buffer the impact force during crushing, preventing damage to the chestnut body. This design makes the dehulling operation gentler and is particularly suitable for processing chestnut products with high appearance requirements.

[0030] Regarding the locking mechanism, one end of the adjusting handle 10 is equipped with a threaded rod 101, and a hand grip 102 is screwed onto the threaded rod 101. After the operator completes the adjustment, they can rotate the hand grip 102 to drive the threaded rod 101 further inward, ultimately causing the threaded end face of the hand grip 102 to tightly press against and seal the side of the main frame 2. This effectively prevents the adjusting handle 10 from loosening or slipping during operation, ensuring that the height-adjusted hopper 1 can be firmly positioned at the set position, achieving precise and stable control of the unloading gap.

[0031] In the specific implementation process, as shown in the figure, the grading limiting hole 11 is provided with three positions: upper, middle, and lower holes, corresponding to three different sizes of chestnut husks. By adjusting the handle 10 and inserting it into the grading limiting hole 11 at different positions, the height of the hopper 1 can be adjusted in three levels: when the handle 10 is inserted into the lower hole, the adjusting slider 4 and its connected support rod 7 are in the lowest position, suitable for removing the husks from larger chestnut husks; when adjusted to the middle hole, the support rod 7 is in the middle position, suitable for removing the husks from medium-sized chestnut husks; when adjusted to the uppermost hole, the support rod 7 rises to the highest position, suitable for removing the husks from smaller chestnut husks. This three-level grading adjustment structure facilitates multi-purpose use of the machine, improves husk removal efficiency, and enhances adaptability.

[0032] Furthermore, to achieve adaptive linkage of the support rods 7 during the sliding process, one end of the connecting piece 5 is provided with an elliptical through hole for fitting between two adjacent support rods 7. When the support rods 7 slide up and down along an arc-shaped path within the sliding holes 3, since the sliding holes 3 are distributed in a fan shape with the center of the hopper 1 as the center, their angles are slightly offset, thus changing the relative tilt angle between the support rods 7. The connecting piece 5, by providing the elliptical through hole, can effectively compensate for the change in the included angle between the support rods 7, preventing connection jamming or structural interference.

[0033] The other end of the connecting piece 5 has a circular through hole for connecting to the fixing rods 6 located on the left and right sides inside the hopper 1. The fixing rods 6 are fixedly installed on the inner wall of the hopper 1 by bolts (both ends of the fixing rods 6 have threaded grooves) and remain stationary at all times, forming a three-dimensional stable support frame with the connecting piece 5. The two fixing rods 6 are arranged in parallel to provide end positioning support for the support rod 7 group.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A hopper device with adjustable spacing and height for a chestnut dehulling machine, comprising a hopper (1) and a main frame (2), wherein the hopper (1) is detachably disposed within the main frame (2), characterized in that: The hopper (1) has several sliding holes (3) at both the front and rear ends. The sliding holes (3) are distributed in a fan shape with the center line of the hopper (1) as the center. Two sliding holes (3) at the front and rear respectively form a group. The front and rear ends of the hopper (1) are respectively provided with adjustable sliders (4) that can move up and down. Each set of sliding holes (3) is provided with a support rod (7). The two ends of the support rod (7) pass through the corresponding set of sliding holes (3) and the adjustable slider (4) in sequence, and extend to the outside of the hopper (1). The hopper (1) is provided with two parallel fixed rods (6) inside, and a connecting piece (5) is sleeved between several of the support rods (7). The connecting piece (5) is connected to the support rod (7) and the fixed rod (6) respectively through the through holes at both ends. Both ends of the support rod (7) are limited by limiting pins.

2. The adjustable-spacing and adjustable-height hopper device for a chestnut dehulling machine according to claim 1, characterized in that: Two longitudinal connecting ears (8) are fixed on the adjusting slider (4). A transverse connecting ear (9) is detachably provided on the longitudinal connecting ear (8). An adjusting handle (10) is fixed on the transverse connecting ear (9). Two graded limiting holes (11) are opened on the left and right sides of the main frame (2). The adjusting handle (10) can be inserted into the graded limiting hole (11) to realize graded limiting adjustment.

3. The adjustable-spacing and adjustable-height hopper device for a chestnut dehulling machine according to claim 1, characterized in that: Two bearing seats (201) are installed on the top surface of the main frame (2). A transmission shaft (12) is rotatably arranged between the two bearing seats (201). A peeling roller (13) is detachably arranged on the transmission shaft (12). Several peeling teeth (14) are fixed on the peeling roller (13). The several peeling teeth (14) are spirally staggered along the outer wall of the peeling roller (13).

4. The adjustable-spacing and adjustable-height hopper device for a chestnut dehulling machine according to claim 3, characterized in that: A sub-frame (15) is fixed to the rear end of the main frame (2). A drive motor (16) is installed on the sub-frame (15). A first pulley (17) is installed on the output end of the drive motor (16). A second pulley (18) is installed on the rear end of the transmission shaft (12). A belt body (19) is wound between the first pulley (17) and the second pulley (18).

5. The adjustable spacing and height hopper device for a chestnut dehulling machine according to claim 3, characterized in that: Both the support rod (7) and the fixing rod (6) are movably fitted with sleeves (701), and a protective sleeve (1401) is fixedly fitted on one end of the peeling tooth (14).

6. The adjustable spacing and height hopper device for a chestnut dehulling machine according to claim 2, characterized in that: One end of the adjusting handle (10) is fixed with a threaded rod (101), and a hand grip (102) is threaded onto the threaded rod (101).

Images