Tobacco leaf grading table

Abstract

The utility model relates to a tobacco leaf grading table which aims at solving the problems that tobacco leaves are inconvenient to place and store in a classified mode and the grading efficiency is low. The grading table comprises a table top and supporting legs, a drawer is arranged at one corner of the table top, a screen is arranged above the drawer, and a plurality of big-end-up bucket-shaped through holes are formed in the periphery of the screen and used for containing tobacco leaves. A movable lifting trolley is arranged below each through hole, each lifting trolley is composed of a chassis, wheels, an upper telescopic rod, a lower telescopic rod and an objective table, springs are arranged in the telescopic rods, and the height can be automatically adjusted according to the weight of tobacco leaves. The left side of the screen is provided with an unpowered conveyor belt or a lift truck, and the through holes are evenly distributed and pasted with level marks. The through holes are matched with the lifting truck, tobacco leaves directly fall into the objective table after being graded, the working radius is reduced, and efficiency is improved; meanwhile, impurity separation and classified collection are achieved, the tobacco leaf quality is improved, operation is convenient, and working efficiency is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to tobacco processing equipment technical field, concretely relates to a tobacco leaf grading table for the grading arrangement work of tobacco leaf. BACKGROUND

[0002] In the tobacco processing process, tobacco leaf grading is an important link, which needs to separate and arrange tobacco leaves of different grades. After grading, workers need to manually transport the tobacco leaves to the designated area. This manual transportation method not only requires a large amount of labor cost, but also has extremely low work efficiency. Moreover, due to the frequent contact between tobacco leaves and various appliances during transportation, the tobacco leaves are prone to damage, wrinkling and other conditions, which seriously affects the appearance quality of the tobacco leaves and reduces their commercial value.

[0003] From the perspective of the working experience of the operator, in the traditional grading process, the worker needs to maintain a bent-over posture for a long time to sort the tobacco leaves, which causes great pressure on the waist muscles and spine. In this working state for a long time, the worker is prone to suffer from occupational diseases such as waist strain and lumbar disc herniation, which not only damages the worker's health, but also reduces the worker's work enthusiasm and work efficiency, thereby affecting the quality and progress of the entire tobacco leaf grading work.

[0004] In terms of impurity separation and classification collection, the existing technology also has obvious deficiencies. In most cases, impurity separation and tobacco classification collection need to be carried out in steps, which undoubtedly increases the complexity and time cost of the work process. Moreover, due to the lack of effective synchronous processing mechanism, non-tobacco impurities are mixed into the tobacco leaves from time to time, which seriously affects the purity of the tobacco leaves and has a negative impact on the subsequent processing and product quality.

[0005] In addition, the existing grading equipment lags behind in height adjustment and cannot automatically adjust according to the weight of the tobacco leaves, which increases the operation difficulty and labor intensity of the operator during operation.

[0006] In summary, it is urgent for the tobacco industry to develop a new type of equipment that can solve the above problems, realize convenient tobacco classification and storage, and effectively improve the efficiency and quality of tobacco grading. UTILITY MODEL CONTENT

[0007] The utility model aims at providing a tobacco leaf grading table, which can conveniently classify, place and store tobacco leaves, and the lifting vehicle can automatically adjust the height according to the weight of the tobacco leaves, thereby improving the efficiency and quality of tobacco grading.

[0008] This utility model provides a tobacco leaf grading table, including a tabletop and supporting legs. A drawer is designed in one corner of the tabletop, with a sieve above the drawer. Several through holes are formed around the sieve on the tabletop for placing tobacco leaves. A movable lifting cart is installed below each through hole. The lifting cart includes a chassis, wheels, an upper telescopic rod, a lower telescopic rod, and a platform. The wheels are installed below the chassis. The upper and lower telescopic rods are connected end-to-end and installed between the platform and the chassis. Springs are installed inside the upper and lower telescopic rods to adjust their height according to the weight of the tobacco leaves on the platform. Through the cooperation of the through holes and the lifting cart, graded tobacco leaves fall directly onto the platform, avoiding the inefficient process of frequent manual handling to the conveyor belt or ground in traditional operations. When the tobacco leaves to be graded are placed on the lifting cart, the spring-loaded telescopic rods automatically adjust their height according to the weight of the leaves, allowing operators to complete the sorting action without bending over, reducing the risk of lower back strain. The combination of the sieve and through holes simultaneously achieves impurity separation and tobacco leaf classification and collection, reducing the rate of non-tobacco impurities contaminating the tobacco.

[0009] Furthermore, the through-hole is shaped like a bucket, wider at the top and narrower at the bottom. This bucket-shaped structure guides the tobacco leaves to slide naturally onto the platform, preventing them from getting stuck.

[0010] Furthermore, both the upper and lower telescopic rods are configured with several sections, each containing an independent spring. This multi-stage spring system provides graded load-bearing, preventing single spring failure due to overload. The spring constant of each stage of the telescopic rod is directly proportional to the square of the diameter of its corresponding segment and inversely proportional to the segment length; each segment satisfies the relationship k. i =(Eπd) i ) / (4L i ), where k i Let d be the spring constant of the i-th order spring. i L represents the inner diameter of the corresponding segment. i Let E be the original length of the segment and E be the elastic modulus of the spring material. By optimizing the mathematical relationship between the elastic coefficient and the diameter and length, we ensure that the extension and retraction of each telescopic rod is linearly matched to the weight of the tobacco leaves, thereby reducing the probability of damage to a single telescopic rod segment.

[0011] Furthermore, the drawer and sieve are located in the lower left corner of the desktop, with through holes evenly distributed on the right and front sides of the sieve; a non-powered conveyor belt or a lifting trolley is also installed on the left side of the sieve. The evenly distributed through holes eliminate the need for operators to frequently move their positions, effectively reducing workload and improving sorting efficiency.

[0012] Furthermore, the lifting platform has swivel casters with brakes. The platform is concave and basin-shaped to prevent tobacco leaves from slipping. A handle is also installed at the front of the lifting platform.

[0013] Optionally, five upper and five lower telescopic rods are provided, installed at the four corners and center between the chassis and the platform. This multi-point support structure ensures smooth lifting and lowering of the platform, preventing breakage caused by tilted tobacco leaf accumulation.

[0014] Furthermore, each through-hole on the desktop is labeled with a level indicator to improve worker efficiency.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Improving work efficiency: The combination of through-holes and the lifting trolley allows graded tobacco leaves to fall directly onto the loading platform, increasing work efficiency. Simultaneously, the evenly distributed through-holes and rationally positioned screens eliminate the need for operators to move, resulting in a small working radius and further enhancing sorting efficiency. Each through-hole on the tabletop is labeled with a grade, enabling workers to quickly and accurately classify and place the tobacco leaves, reducing errors and improving overall efficiency.

[0017] Ensuring operational quality: When the lifting trolley is used as a raw material cart, its height can be automatically adjusted according to the weight of the tobacco leaves. Operators can complete the sorting action without bending over, reducing the risk of lumbar strain and ensuring that operators maintain a good condition during long working hours, thereby guaranteeing the quality of tobacco leaf grading. Multi-stage spring grading and load-bearing prevents single spring overload failure. Furthermore, through optimization of the mathematical relationship between the elastic coefficient and diameter / length, it ensures that the extension and retraction of each stage of the telescopic rod linearly matches the weight of the tobacco leaves, reducing the probability of damage to a single telescopic rod section, ensuring stable equipment operation, and improving the accuracy of tobacco leaf grading.

[0018] Optimized impurity separation and classification collection: The combination design of screen and through holes can simultaneously achieve impurity separation and tobacco leaf classification collection, effectively reducing the mixing rate of non-tobacco impurities and improving the quality of tobacco leaves. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is an overall schematic diagram of an embodiment of the present utility model;

[0021] Figure 2 Top view provided for an embodiment of this utility model;

[0022] Figure 3 An exploded view diagram provided for an embodiment of this utility model;

[0023] Figure 4A schematic diagram of the table structure provided for an embodiment of this utility model;

[0024] Figure 5 A schematic diagram of the lifting vehicle structure provided for an embodiment of this utility model;

[0025] Figure 6 This is a schematic cross-sectional view of an embodiment of the present utility model;

[0026] Figure 7 A partial enlarged view (A) provided for an embodiment of this utility model.

[0027] The following are the labeling elements in the figure:

[0028] 1. Desktop; 2. Support legs; 3. Screen; 4. Drawer; 5. Through hole; 6. Lifting cart; 61. Chassis; 62. Wheels; 63. Lower telescopic rod; 64. Upper telescopic rod; 65. Platform; 66. Handle; 67. Spring; 7. Conveyor belt.

[0029] The accompanying drawings have illustrated specific embodiments of the present invention, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0030] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0031] To make the technical solution and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0032] Please see Figures 1-7 As shown, this utility model provides a tobacco grading table, specifically including a tabletop 1 and supporting legs 2 that support the tabletop 1. The supporting legs 2 are made of aluminum. In this embodiment, drawers 4 and sieves 3 are located at the lower left corner of the tabletop 1, and through holes 5 are evenly distributed on the right and front sides of the sieves 3. A non-powered conveyor belt 7 or a lifting trolley 6 is also installed on the left side of the sieves 3. A movable lifting trolley 6 is also provided below each through hole 5.

[0033] like Figure 5As shown, the lifting vehicle 6 includes a chassis 61, wheels 62, an upper telescopic rod 64, a lower telescopic rod 63, and a platform 65. The wheels 62 are installed below the chassis 61. The upper telescopic rod 64 and the lower telescopic rod 63 are connected end to end and installed between the platform 65 and the chassis 61. Springs 67 are installed inside the upper telescopic rod 64 and the lower telescopic rod 63 to extend and retract according to the weight of the tobacco leaves on the platform 65.

[0034] like Figure 6 , 7 As shown, both the upper telescopic rod 64 and the lower telescopic rod 63 are equipped with several sections, and each section has an independent spring 67 installed inside. The multi-stage springs provide graded load-bearing, preventing single springs from failing due to overload. The spring constant of each stage of the telescopic rod is directly proportional to the square of the diameter of its segment and inversely proportional to the segment length; each segment satisfies the relationship k. i =(Eπd) i ) / (4L i ), where k i Let d be the spring constant of the i-th order spring. i L represents the inner diameter of the corresponding segment. i Let E be the original length of the segment and E be the elastic modulus of the spring material. By optimizing the mathematical relationship between the elastic coefficient and the diameter and length, we ensure that the extension and retraction of each telescopic rod is linearly matched to the weight of the tobacco leaves, thereby reducing the probability of damage to a single telescopic rod segment.

[0035] By using the through hole 5 in conjunction with the lifting vehicle 6, the tobacco leaves can be directly dropped into the loading platform 65 after grading, avoiding the inefficient process of frequently moving them to the conveyor belt 7 or the ground in traditional operations.

[0036] When the tobacco leaves to be graded are placed on the lifting cart 6 and the lifting cart 6 is placed to the left of the screen 3, the spring 67 telescopic rod automatically adjusts the height according to the weight of the tobacco leaves, so that the operator can complete the sorting action without bending over, reducing the risk of back strain.

[0037] like Figure 4 , 6 As shown, the through-hole 5 is shaped like a bucket, wider at the top and narrower at the bottom. This bucket-shaped structure guides the tobacco leaves to slide naturally onto the platform 65, preventing them from getting stuck. In some embodiments, the wheels 62 of the lifting vehicle 6 are omnidirectional wheels with brakes, and each through-hole 5 on the tabletop 1 is affixed with a level label to improve worker efficiency.

[0038] In this embodiment, five upper telescopic rods 64 and five lower telescopic rods 63 are respectively installed at the four corners and the center between the chassis 61 and the platform 65. The multi-point support structure ensures that the platform 65 rises and falls smoothly, avoiding the problem of tobacco leaves breaking due to skewed accumulation. The platform 65 is concave in the shape of a basin to prevent tobacco leaves from slipping, and a handle 66 is also provided at the front of the lifting vehicle 6.

[0039] To gain a more thorough and comprehensive understanding of the disclosure of this utility model, its principles will be further explained below in conjunction with its usage.

[0040] In actual use, a movable lifting cart 6 is first placed below each through hole 5. A non-powered conveyor belt 7 or a lifting cart 6 is installed on the left side of the screen 3 to facilitate the placement of the tobacco leaves to be graded.

[0041] like Figure 1 , 2 As shown, the worker sits behind drawer 4, with conveyor belt 7 or lifting trolley 6 on the left. The tobacco leaves to be graded are placed on conveyor belt 7 or lifting trolley 6. When the worker takes tobacco leaves from conveyor belt 7 or lifting trolley 6 to the through-hole 5, they pass over screen 3. Non-tobacco debris and broken tobacco leaves fall onto screen 3, and smaller debris further falls into drawer 4. Tobacco leaves of the corresponding grade are then placed into the corresponding through-hole 5. As the amount of tobacco leaves increases, lifting trolley 6 descends. When full, the worker can move lifting trolley 6 by slightly pressing down on the tobacco leaves.

[0042] If a lifting cart 6 is used to load the tobacco leaves to be graded on the left side of the table 1, the container will gradually rise as the number of tobacco leaves decreases, allowing operators to complete the sorting action without bending over.

[0043] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the foregoing claims.

[0044] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A tobacco grading table, comprising a tabletop (1) and supporting legs (2) for supporting the tabletop (1), characterized in that: A drawer (4) is designed in one corner of the desktop (1). A sieve (3) is above the drawer (4). Several through holes (5) are opened around the desktop (1) around the sieve (3) for placing tobacco leaves. A movable lifting vehicle (6) is set below each through hole (5). The lifting vehicle (6) includes a chassis (61), wheels (62), an upper telescopic rod (64), a lower telescopic rod (63), and a platform (65). The wheels (62) are installed below the chassis (61). The upper telescopic rod (64) and the lower telescopic rod (63) are connected end to end and installed between the platform (65) and the chassis (61). Springs (67) are installed inside the upper telescopic rod (64) and the lower telescopic rod (63) to extend and retract according to the weight of the tobacco leaves on the platform (65).

2. The tobacco leaf grading table according to claim 1, characterized in that: The through hole (5) is shaped like a bucket, with a larger top and a smaller bottom.

3. A tobacco leaf grading table according to claim 1, characterized in that: The upper telescopic rod (64) and the lower telescopic rod (63) are each provided with several sections, and each section of the telescopic rod is equipped with an independent spring (67).

4. A tobacco leaf grading table according to claim 1, characterized in that: The drawer (4) and the screen are located at the lower left corner of the desktop (1). The through holes (5) are evenly distributed on the right and front sides of the screen. A conveyor belt (7) or a lifting vehicle (6) is also installed on the left side of the screen.

5. A tobacco leaf grading table according to claim 1, characterized in that: The wheels (62) of the lifting vehicle (6) are universal wheels with brakes, and the platform (65) is a concave basin shape.

6. A tobacco leaf grading table according to claim 1, characterized in that: The lifting vehicle (6) is also equipped with a handle (66) at the front.

7. A tobacco leaf grading table according to claim 1, characterized in that: The upper telescopic rod (64) and lower telescopic rod (63) are each provided in five units, and are installed at the four corners and the center between the chassis (61) and the platform (65).

8. A tobacco leaf grading table according to claim 1, characterized in that: Each through hole (5) of the desktop (1) is affixed with a level label.

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