Asymmetric particle material grab bucket device with sealing structure

Abstract

The asymmetric particle material grab bucket device with the sealing structure comprises a large bucket valve assembly and a small bucket valve assembly, the large bucket valve assembly comprises a first supporting rod mechanism and a large bucket valve mechanism, and the small bucket valve assembly comprises a second supporting rod mechanism and a small bucket valve mechanism. The large bucket valve mechanism and the small bucket valve mechanism are asymmetrically closed when particle materials in a bucket are sealed, and a plurality of first sealing toothed plate structures are arranged on the inner side of the edge of a bucket opening of the large bucket valve mechanism at intervals; a plurality of second sealing toothed plate structures are arranged on the outer side of the edge part of a bucket opening of the small bucket valve mechanism at intervals; when the large bucket valve mechanism and the small bucket valve mechanism are asymmetrically closed, the first sealing teeth and the second sealing teeth are meshed in a staggered manner; the first sealing toothed plate structures are distributed side by side at intervals to form a first sealing tooth permutation combination, and the second sealing toothed plate structures are distributed side by side at intervals to form a second sealing tooth permutation combination. According to the asymmetric particle material grab bucket device, the risk that particle materials are scattered and leaked through gaps after the asymmetric particle material grab bucket device grabs is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-leakage of bulk cargo grab buckets, in particular to an asymmetric granular material grab bucket device with a sealing structure. Background Art

[0002] Non-continuous loading and unloading equipment such as gantry cranes and bridge grab ship unloaders are generally equipped with asymmetric grabs for grain operations. Asymmetric grabs are generally double-flap structures, including large and small buckets. In order to prevent material leakage on both sides of the grab, an existing sealing plate is usually provided on the inner side of the large bucket blade and the outer side of the small bucket blade (for a structure of the existing sealing plate, refer to the Chinese utility model patent with application number 86206272 entitled "Double-bucket grab sealing device"). In order to achieve a more ideal anti-leakage effect, after the grab is closed, the angle between the gap of the existing sealing plate and the length of the overlapping part thereof is designed to be much smaller than the repose angle of the grain material.

[0003] However, in actual use, the above-mentioned existing sealing plates used in the asymmetric grain grab have the following three problems: First, the existing sealing plates are easily deformed by collision or extrusion during operation, such as collision with the ribs in the cabin and the existing sealing plates are deformed by sticks, iron objects and other debris in the grabbed materials, which leads to leakage during operation; Second, when the grab is in an unbalanced contact with the bottom of the cabin or the ground during the process of descending or lifting to grab materials, the existing sealing plates near the bottom blade of the small bucket side will rub against the bottom of the cabin or the ground and quickly break. Rapid wear increases the gap between the existing sealing plates after the grab is closed, and the angle with the overlapping part also increases. When it is close to or greater than the angle of repose of the material, it is easy to cause leakage. Third, there is internal friction between the materials accumulated in the gap between the existing sealing plates of the grab, that is, the angle of repose of the materials, and there is also external friction between the materials and the existing sealing plates. When the grab is in a non-uniform motion state such as acceleration / deceleration, on the one hand, the materials near the gap between the existing sealing plates inside the grab will squeeze the materials in the gap to leak out, and on the other hand, the materials will overcome the static friction with the existing sealing plates and leak out.

[0004] Chinese utility model patent application number 2022228435305 discloses a leak-proof and expandable double-jaw grab, including a double-jaw grab body, an intermediate movable baffle assembly is installed at the open opening on the inner side of the middle fixed baffle, and side movable baffle assemblies are installed at the open openings on the inner sides of the fixed baffles on both sides. The intermediate movable baffle assembly and the side movable baffle assembly are opened and closed by a forced reset assembly; however, the double-jaw grab still has the disadvantage of granular material leaking through the gaps.

[0005] The problem of material spillage is first of all detrimental to the environmental sanitation of the work site. If it is not cleaned up in time, it may cause rot and stink. Secondly, it increases the manpower and material costs of cleaning up the spilled materials after the operation. Finally, it increases the cargo damage rate, affecting work efficiency and corporate service level. Utility Model Content

[0006] In view of this, it is necessary to propose an asymmetric particulate material grab device with a sealing structure to address the above-mentioned problems, so as to overcome several shortcomings in the above-mentioned background technology and solve the following technical problems: how to reduce the risk of particulate material leaking through the grab gaps or structural deformation gaps after the asymmetric particulate material grab device is grabbed.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model proposes an asymmetric granular material grab bucket device with a sealing structure, comprising a large bucket flap assembly and a small bucket flap assembly, the large bucket flap assembly comprising a first support rod mechanism and a large bucket flap mechanism, the small bucket flap assembly comprising a second support rod mechanism and a small bucket flap mechanism, the top of the first support rod mechanism is hinged with the top of the second support rod mechanism, the bottom of the first support rod mechanism is connected with the large bucket flap mechanism, the bottom of the second support rod mechanism is connected with the small bucket flap mechanism, the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined when the granular material in the bucket is closed, a plurality of first sealing tooth plate structures are arranged at intervals on the inner side of the bucket mouth edge of the large bucket flap mechanism; a plurality of second sealing tooth plate structures are arranged at intervals on the outer side of the bucket mouth edge of the small bucket flap mechanism; when the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined, each first sealing tooth plate structure is staggered and meshed with each second sealing tooth plate structure;

[0009] A plurality of first sealing tooth plate structures are arranged side by side and spaced apart to form a first sealing tooth arrangement combination, and a plurality of second sealing tooth plate structures are arranged side by side and spaced apart to form a second sealing tooth arrangement combination; the first sealing tooth arrangement combination is used to cooperate with the second sealing tooth arrangement combination to cover the gap formed when the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined; the second sealing tooth arrangement combination is used to cooperate with the first sealing tooth arrangement combination to cover the gap formed when the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined.

[0010] Furthermore, when the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined, two second sealing tooth plate structures are respectively inserted into the upper and lower gaps of the first sealing tooth plate structure that is not arranged at the end of the first sealing tooth arrangement combination, and two first sealing tooth plate structures are respectively inserted into the upper and lower gaps of the second sealing tooth plate structure that is not arranged at the end of the second sealing tooth arrangement combination.

[0011] Further, a plurality of first sealing tooth plate structures are arranged in an array side by side and at equal distances to form a first sealing tooth arrangement combination, and a plurality of second sealing tooth plate structures are arranged in an array side by side and at equal distances to form a second sealing tooth arrangement combination.

[0012] Further, the large bucket flap mechanism includes a first left side plate portion, a first right side plate portion and a first bucket body surrounding plate portion, the first left side plate portion, the first right side plate portion and the first bucket body surrounding plate portion constitute a first half bucket cavity, the first half bucket cavity is used to cooperate with the small bucket flap mechanism to scoop up granular materials; a first outer edge area of ​​the first left side plate portion located on the left inner side wall of the first half bucket cavity is provided with a group of first sealing teeth arrangement combination, the first outer edge area is close to the bucket mouth of the large bucket flap mechanism;

[0013] Another set of first sealing teeth arrangement combination is provided in the second outer edge area of ​​the first right side plate portion located on the right inner wall surface of the first half bucket cavity, and the second outer edge area is close to the bucket opening of the large bucket valve mechanism;

[0014] The small bucket flap mechanism comprises a second left side plate portion, a second right side plate portion and a second bucket body surrounding plate portion, the second left side plate portion, the second right side plate portion and the second bucket body surrounding plate portion constitute a second half bucket cavity, the second half bucket cavity is used to cooperate with the large bucket flap mechanism to scoop up granular materials; a group of second sealing teeth arrangement combinations are provided in the third outer edge area of ​​the second left side plate portion located on the left outer side wall of the second half bucket cavity, and the third outer edge area is close to the bucket mouth of the small bucket flap mechanism;

[0015] Another set of second sealing teeth arrangement combination is provided in the fourth outer edge area of ​​the second right side plate portion located on the right outer side wall of the second half bucket cavity, and the fourth outer edge area is close to the bucket mouth of the small bucket valve mechanism;

[0016] When the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined, a group of first sealing tooth arrangements in the first outer edge area and a group of second sealing tooth arrangements in the third outer edge area are staggered and engaged with each other, and another group of first sealing tooth arrangements in the second outer edge area and another group of second sealing tooth arrangements in the fourth outer edge area are staggered and engaged with each other.

[0017] Further, the end position of the first sealing tooth arrangement combination is a head end position or a tail end position of the first sealing tooth plate structure arrangement in the first sealing tooth arrangement combination.

[0018] Further, the end position of the second sealing tooth arrangement combination is a head end position or a tail end position of the second sealing tooth plate structure arrangement in the second sealing tooth arrangement combination.

[0019] Furthermore, when the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined, the tail end portion of the second sealing tooth plate structure is upwardly tilted toward the second sealing tooth adjacent above, and the tail end portion of the second sealing tooth plate structure is away from the bucket mouth of the small bucket flap mechanism relative to the head end portion of the second sealing tooth plate structure.

[0020] Furthermore, when the large bucket flap mechanism and the small bucket flap mechanism are asymmetrically combined, the gap between the rear end of the second sealing tooth plate structure and the head end of the first sealing tooth plate structure located adjacent to and above the second sealing tooth plate structure is narrowed, thereby further preventing the leakage of granular materials.

[0021] Furthermore, the cross-sectional structure of the rear end portion of the second sealing tooth plate structure is arc-shaped.

[0022] Furthermore, the longitudinal side surface of the head end of the first sealing tooth plate structure is flush with the bucket mouth of the large bucket mechanism;

[0023] The longitudinal side surface of the head end portion of the second sealing tooth plate structure is flush with the bucket mouth of the small bucket valve mechanism.

[0024] The beneficial effects of the utility model are:

[0025] The utility model reduces the risk of granular materials leaking through the gaps in the grab bucket or the gaps in the structural deformation after the asymmetric granular material grab bucket device is gripped. The utility model can be used to modify the existing asymmetric granular material grab bucket, and the modification difficulty and cost are relatively low. The utility model has high adaptability to the grabbed granular materials. The utility model can also avoid the overflow of granular materials during the impact of the grab bucket movement, and can avoid the risk of leakage caused by the granular materials being squeezed into the gap of the sealing tooth plate structure during the acceleration / deceleration movement of the existing grab bucket, thereby preventing leakage and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a right view of an asymmetric granular material grab bucket device with a sealing structure according to the utility model;

[0027] Figure 2 for Figure 1 A cross-sectional view in the AA direction;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the large bucket valve assembly involved in the utility model;

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the small bucket valve assembly involved in the utility model;

[0030] Figure 5 It is a partial structural schematic diagram of the tail end portion of the second sealing tooth plate structure involved in the utility model blocking the granular material in the gap;

[0031] Description of reference numerals:

[0032] Large bucket flap assembly 1; small bucket flap assembly 2; first support rod mechanism 11; large bucket flap mechanism 12; second support rod mechanism 21; small bucket flap mechanism 22; first sealing tooth plate structure 121; second sealing tooth plate structure 221; first sealing tooth arrangement combination 1210; second sealing tooth arrangement combination 2210; first left side plate portion 122; first right side plate portion 123; first bucket body surrounding plate portion 124; second left side plate portion 222; second right side plate portion 223; second bucket body surrounding plate portion 224; tail end portion 2211 of second sealing tooth plate structure 221; granular material 800; bucket mouth 1200 of large bucket flap mechanism 12; bucket mouth 2200 of small bucket flap mechanism 22. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be further clearly and completely described below in combination with the embodiments of the utility model. It should be noted that the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] It should be understood that the directions or positional relationships indicated by terms such as "upper", "lower", "front", "back", "left", and "right" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0035] The terms "first", "second", "third", "fourth", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "second", "third", "fourth" features may explicitly or implicitly include one or more of the features.

[0036] Example

[0037] like Figure 1-Figure 5 As shown:

[0038] The present embodiment proposes an asymmetric particulate material grab device with a sealing structure, including a large bucket flap assembly 1 and a small bucket flap assembly 2, the large bucket flap assembly 1 includes a first support rod mechanism 11 and a large bucket flap mechanism 12, the small bucket flap assembly 2 includes a second support rod mechanism 21 and a small bucket flap mechanism 22, the top of the first support rod mechanism 11 is hinged to the top of the second support rod mechanism 21, the bottom of the first support rod mechanism 11 is connected to the large bucket flap mechanism 12, and the bottom of the second support rod mechanism 21 is connected to the small bucket flap mechanism 22 The large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined when the granular material 800 in the closed bucket is closed. A plurality of first sealing tooth plate structures 121 are arranged at intervals on the inner side of the edge of the bucket mouth 1200 of the large bucket flap mechanism 12; a plurality of second sealing tooth plate structures 221 are arranged at intervals on the outer side of the edge of the bucket mouth 2200 of the small bucket flap mechanism 22; when the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined, each first sealing tooth plate structure 121 is staggeredly engaged with each second sealing tooth plate structure 221;

[0039] A plurality of first sealing tooth plate structures 121 are arranged side by side and spaced apart to form a first sealing tooth arrangement combination 1210, and a plurality of second sealing tooth plate structures 221 are arranged side by side and spaced apart to form a second sealing tooth arrangement combination 2210; the first sealing tooth arrangement combination 1210 is used to cooperate with the second sealing tooth arrangement combination 2210 to cover the gap formed when the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined; the second sealing tooth arrangement combination 2210 is used to cooperate with the first sealing tooth arrangement combination 1210 to cover the gap formed when the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined.

[0040] Optimally, when the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined, the two second sealing tooth plate structures 221 are respectively inserted into the upper and lower gaps of the first sealing tooth plate structure 121 that are not arranged at the end position of the first sealing tooth arrangement combination 1210, and the two first sealing tooth plate structures 121 are respectively inserted into the upper and lower gaps of the second sealing tooth plate structure 221 that are not arranged at the end position of the second sealing tooth arrangement combination 2210.

[0041] Optimally, a plurality of first sealing tooth plate structures 121 are arranged in an array with equal distances side by side to form a first sealing tooth arrangement combination 1210 , and a plurality of second sealing tooth plate structures 221 are arranged in an array with equal distances side by side to form a second sealing tooth arrangement combination 2210 .

[0042] Optimally, the large bucket flap mechanism 12 includes a first left side plate portion 122, a first right side plate portion 123 and a first bucket body surrounding plate portion 124, the first left side plate portion 122, the first right side plate portion 123 and the first bucket body surrounding plate portion 124 constitute a first half bucket cavity, and the first half bucket cavity is used to cooperate with the small bucket flap mechanism 22 to carry out scooping of granular materials 800; a first outer edge area of ​​the first left side plate portion 122 located on the left inner side wall of the first half bucket cavity is provided with a group of first sealing tooth arrangement combinations 1210, and the first outer edge area is close to the bucket mouth 1200 of the large bucket flap mechanism 12;

[0043] Another set of first sealing teeth arrangement combination 1210 is provided at the second outer edge area of ​​the first right side plate portion 123 located on the right inner wall of the first half bucket cavity, and the second outer edge area is close to the bucket mouth 1200 of the large bucket mechanism 12;

[0044] The small bucket mechanism 22 includes a second left plate portion 222, a second right plate portion 223 and a second bucket body surrounding plate portion 224, the second left plate portion 222, the second right plate portion 223 and the second bucket body surrounding plate portion 224 constitute a second half bucket cavity, and the second half bucket cavity is used to cooperate with the large bucket mechanism 12 to scoop up the granular material 800; a group of second sealing teeth arrangement combinations 2210 are provided in the third outer edge area of ​​the second left plate portion 222 located on the left outer side wall of the second half bucket cavity, and the third outer edge area is close to the bucket mouth 2200 of the small bucket mechanism 22;

[0045] Another set of second sealing teeth arrangement combination 2210 is provided at the fourth outer edge area of ​​the second right side plate portion 223 located on the right outer side wall of the second half bucket cavity, and the fourth outer edge area is close to the bucket mouth 2200 of the small bucket valve mechanism 22;

[0046] When the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined, a group of first sealing tooth arrangement combinations 1210 in the first outer edge area are staggeredly engaged with a group of second sealing tooth arrangement combinations 2210 in the third outer edge area, and another group of first sealing tooth arrangement combinations 1210 in the second outer edge area are staggeredly engaged with another group of second sealing tooth arrangement combinations 2210 in the fourth outer edge area.

[0047] Specifically, the bucket mouth 1200 of the large bucket flap mechanism 12 is an opening with four surrounding edges surrounded by the side edges of the first right plate portion 123, the side edges of the first left plate portion 122, and the top and bottom edges of the first bucket body surrounding plate portion 124; the bucket mouth 2200 of the small bucket flap mechanism 22 is an opening with four surrounding edges surrounded by the side edges of the second left plate portion 222, the side edges of the second right plate portion 223, and the top and bottom edges of the second bucket body surrounding plate portion 224.

[0048] Specifically, the first outer edge region, the second outer edge region, the third outer edge region, and the fourth outer edge region are all virtual rectangles;

[0049] When the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined, each sealing tooth arrangement combination is vertically arranged.

[0050] Optimally, the end position of the first sealing tooth arrangement combination 1210 is the head end position or the tail end position of the arrangement of the first sealing tooth plate structure 121 in the first sealing tooth arrangement combination 1210 .

[0051] Optimally, the end position of the second sealing tooth arrangement combination 2210 is the head end position or the tail end position of the second sealing tooth plate structure 221 in the second sealing tooth arrangement combination 2210 .

[0052] Optimally, when the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined, the tail end portion 2211 of the second sealing tooth plate structure 221 is upwardly tilted toward the second sealing tooth adjacent above, and the tail end portion 2211 of the second sealing tooth plate structure 221 is away from the bucket mouth 2200 of the small bucket flap mechanism 22 relative to the head end portion of the second sealing tooth plate structure 221; the tail end portion 2211 of the second sealing tooth plate structure 221 utilizes the repose angle of the material to achieve a further anti-leakage effect.

[0053] Optimally, when the large bucket flap mechanism 12 and the small bucket flap mechanism 22 are asymmetrically combined, the gap between the tail end 2211 of the second sealing tooth plate structure 221 and the head end of the first sealing tooth plate structure 121 located adjacent to and above the second sealing tooth plate structure 221 is narrowed, thereby further preventing the leakage of granular material 800.

[0054] Optimally, the cross-sectional structure of the tail end portion 2211 of the second sealing tooth plate structure 221 is arc-shaped.

[0055] Furthermore, if Figure 3 , Figure 4 As shown, the longitudinal side surface of the head end of the first sealing tooth plate structure 121 is flush with the bucket mouth 1200 of the large bucket mechanism 12;

[0056] The longitudinal side surface of the head end of the second sealing tooth plate structure 221 is flush with the bucket mouth 2200 of the small bucket valve mechanism 22.

[0057] Specifically, the gap between the non-overlapping areas of adjacent first sealing tooth plate structures 121 forms a buffer zone, the first sealing tooth plate structure 121 and the second sealing tooth plate structure 221 are an overlapping area, and the tail end portion 2211 of the second sealing tooth plate structure 221 forms a bending area, i.e., a pocket area; the bending design of the tail end portion 2211 of the second sealing tooth plate structure 221 enhances the second sealing tooth plate structure 221's ability to resist collision and deformation in the longitudinal direction.

[0058] The working process of the utility model is as follows:

[0059] When the sealing structure of the utility model is in a normal state, that is, the sealing tooth plate structure has no deformation, wear and the like, when the grab buckets are closed, materials are squeezed out from the gap formed by the first sealing tooth plate structure 121 and the second sealing tooth plate structure 221. After the grab buckets are completely closed, the buffer zone can effectively reduce the squeezing of materials in the grab bucket on materials in the gap of the sealing tooth plate structure during the acceleration / deceleration movement of the grab bucket. At the same time, part of the materials accumulate in the material pocket area, preventing the materials on the second sealing tooth plate structure 221 from flowing out due to the squeezing of materials in the grab bucket or the impact of acceleration / deceleration of the grab bucket, thereby reducing leakage.

[0060] The utility model has the following advantages:

[0061] It reduces the time for materials to fall normally after the grab bucket is fully closed, improves the working efficiency, and makes the grab bucket basically free of material leakage during acceleration / deceleration movement;

[0062] When an abnormal condition occurs in the sealing structure, that is, the sealing tooth plate structure is accidentally deformed or severely worn, when the grab bucket is closed, the angle formed by the gap between the first sealing tooth plate structure 121 and the second sealing tooth plate structure 221 and the length of the overlapping part thereof changes. When it is greater than the material repose angle, the material will fall from the gap between the first sealing tooth plate structure 121 and the second sealing tooth plate structure 221. After optimized design, the material pocket area at the tail end 2211 of the second sealing tooth plate structure 221 can block the falling material until the material piles up and prevents it from continuing to fall.

[0063] After the tail end portion 2211 of the second sealing tooth plate structure 221 is bent (for example, designed as R70), the anti-collision performance in the longitudinal direction is greatly increased. Even if the second sealing tooth plate structure 221 is bumped during the grab bucket material picking process, it is not easy to deform, thereby ensuring the effectiveness and reliability of the grab bucket sealing structure of the utility model.

[0064] The utility model has low modification difficulty and cost, and the length of the sealing tooth plate can be adjusted according to the usage, and the material adaptability is high; the tail end portion 2211 of the second sealing tooth plate structure 221 adopts a bending design, firstly, the anti-collision deformation ability in the longitudinal direction is greatly enhanced, and secondly, the material pocket area formed at the bending part can receive the overflowed material when the sealing tooth plate structure is worn or the grab bucket moves and impacts, so as to prevent leakage, and finally, the time for waiting for the material to fall normally from the gap of the sealing tooth plate structure can be reduced during normal operation, thereby improving the operation efficiency;

[0065] The buffer zone formed by the first sealing tooth plate structure 121 alleviates the possibility of leakage caused by the material being squeezed into the gap of the sealing tooth plate structure during acceleration / deceleration of the grab bucket in the vertical direction.

[0066] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An asymmetric particulate material grab bucket device with a sealing structure, comprising a large bucket flap assembly (1) and a small bucket flap assembly (2), wherein the large bucket flap assembly (1) comprises a first support rod mechanism (11) and a large bucket flap mechanism (12), and the small bucket flap assembly (2) comprises a second support rod mechanism (21) and a small bucket flap mechanism (22), wherein the top of the first support rod mechanism (11) is hinged to the top of the second support rod mechanism (21), the bottom of the first support rod mechanism (11) is connected to the large bucket flap mechanism (12), and the bottom of the second support rod mechanism (21) is connected to the small bucket flap mechanism (22), and the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined when the particulate material (800) in the bucket is closed, characterized in that: A plurality of first sealing tooth plate structures (121) are arranged at intervals on the inner side of the edge of the bucket mouth (1200) of the large bucket flap mechanism (12); a plurality of second sealing tooth plate structures (221) are arranged at intervals on the outer side of the edge of the bucket mouth (2200) of the small bucket flap mechanism (22); when the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined, each first sealing tooth plate structure (121) and each second sealing tooth plate structure (221) are staggeredly engaged; A plurality of first sealing tooth plate structures (121) are arranged side by side and spaced apart to form a first sealing tooth arrangement combination (1210); a plurality of second sealing tooth plate structures (221) are arranged side by side and spaced apart to form a second sealing tooth arrangement combination (2210); the first sealing tooth arrangement combination (1210) is used to cooperate with the second sealing tooth arrangement combination (2210) to cover a gap formed when the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined; the second sealing tooth arrangement combination (2210) is used to cooperate with the first sealing tooth arrangement combination (1210) to cover a gap formed when the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined.

2. The asymmetric particulate material grab bucket device with a sealing structure according to claim 1 is characterized in that: When the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined, the two second sealing tooth plate structures (221) are respectively inserted into the upper and lower gaps of the first sealing tooth plate structure (121) that is not arranged at the end of the first sealing tooth arrangement combination (1210), and the two first sealing tooth plate structures (121) are respectively inserted into the upper and lower gaps of the second sealing tooth plate structure (221) that is not arranged at the end of the second sealing tooth arrangement combination (2210).

3. The asymmetric particulate material grab bucket device with a sealing structure according to claim 2 is characterized in that: A plurality of first sealing tooth plate structures (121) are arranged in an array at equal distances in parallel to form a first sealing tooth arrangement combination (1210), and a plurality of second sealing tooth plate structures (221) are arranged in an array at equal distances in parallel to form a second sealing tooth arrangement combination (2210).

4. The asymmetric particulate material grab bucket device with a sealing structure according to claim 2 is characterized in that: The large bucket flap mechanism (12) comprises a first left side plate portion (122), a first right side plate portion (123) and a first bucket body surrounding plate portion (124); the first left side plate portion (122), the first right side plate portion (123) and the first bucket body surrounding plate portion (124) constitute a first half bucket cavity, and the first half bucket cavity is used to cooperate with the small bucket flap mechanism (22) to scoop up granular materials (800); a first outer edge area of ​​the first left side plate portion (122) located on the left inner side wall of the first half bucket cavity is provided with a group of first sealing tooth arrangement combinations (1210), and the first outer edge area is close to the bucket mouth (1200) of the large bucket flap mechanism (12); Another set of first sealing tooth arrangement combinations (1210) is provided in a second outer edge region of the first right side plate portion (123) located on the right inner side wall of the first half bucket cavity, and the second outer edge region is close to the bucket opening (1200) of the large bucket flap mechanism (12); The small bucket flap mechanism (22) comprises a second left side plate portion (222), a second right side plate portion (223) and a second bucket body surrounding plate portion (224); the second left side plate portion (222), the second right side plate portion (223) and the second bucket body surrounding plate portion (224) constitute a second half bucket cavity, and the second half bucket cavity is used to cooperate with the large bucket flap mechanism (12) to scoop up granular materials (800); a group of second sealing tooth arrangement combinations (2210) are provided in the third outer edge area of ​​the second left side plate portion (222) located on the left outer side wall of the second half bucket cavity, and the third outer edge area is close to the bucket mouth (2200) of the small bucket flap mechanism (22); Another set of second sealing tooth arrangement combinations (2210) is provided in the fourth outer edge area of ​​the second right side plate portion (223) located on the right outer side wall of the second half bucket cavity, and the fourth outer edge area is close to the bucket mouth (2200) of the small bucket flap mechanism (22); When the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined, a group of first sealing tooth arrangement combinations (1210) in the first outer edge region and a group of second sealing tooth arrangement combinations (2210) in the third outer edge region are staggered and meshed, and another group of first sealing tooth arrangement combinations (1210) in the second outer edge region and another group of second sealing tooth arrangement combinations (2210) in the fourth outer edge region are staggered and meshed.

5. The asymmetric particulate material grab bucket device with a sealing structure according to claim 2 is characterized in that: The end position of the first sealing tooth arrangement combination (1210) is the head end position or the tail end position of the arrangement of the first sealing tooth plate structure (121) in the first sealing tooth arrangement combination (1210).

6. The asymmetric particulate material grab bucket device with a sealing structure according to claim 2 is characterized in that: The end position of the second sealing tooth arrangement combination (2210) is the head end position or the tail end position of the second sealing tooth plate structure (221) in the second sealing tooth arrangement combination (2210).

7. The asymmetric particulate material grab bucket device with a sealing structure according to any one of claims 1 to 4, characterized in that: When the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined, the rear end portion (2211) of the second sealing tooth plate structure (221) is tilted upward toward the second sealing tooth adjacent above, and the rear end portion (2211) of the second sealing tooth plate structure (221) is away from the bucket mouth (2200) of the small bucket flap mechanism (22) relative to the front end portion of the second sealing tooth plate structure (221).

8. The asymmetric particulate material grab bucket device with a sealing structure according to claim 7, characterized in that: When the large bucket flap mechanism (12) and the small bucket flap mechanism (22) are asymmetrically combined, the gap between the rear end portion (2211) of the second sealing tooth plate structure (221) and the front end portion of the first sealing tooth plate structure (121) located adjacent to and above the second sealing tooth plate structure (221) is narrowed, thereby further preventing the granular material (800) from leaking.

9. The asymmetric particulate material grab bucket device with a sealing structure according to claim 7, characterized in that: The cross-sectional structure of the rear end portion (2211) of the second sealing tooth plate structure (221) is arc-shaped.

10. The asymmetric particulate material grabbing bucket device with a sealing structure according to any one of claims 1 to 4, characterized in that: The longitudinal side surface of the head end of the first sealing tooth plate structure (121) is flush with the bucket mouth (1200) of the large bucket mechanism (12); The longitudinal side surface of the head end of the second sealing tooth plate structure (221) is flush with the bucket mouth (2200) of the small bucket valve mechanism (22).

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