Hopper chain and ship unloader with same
By designing a multi-hopper chain structure and using gravity sensor monitoring, the problem of difficult to design hopper chains suitable for different bulk materials in the prior art is solved, and efficient bulk mining and reducing adhesive materials are achieved.
Patent Information
- Application Number
- CN202420014306.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-02
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-01-02
AI Technical Summary
It is difficult for the prior art to design a practical hopper chain structure suitable for different types of bulk materials through simulation, and traditional hopper chains are prone to adhesive problems when unloading wet materials.
A hopper chain is designed, using multiple hoppers to connect through chains, and the hopper and chain are connected through gravity sensors to monitor the mass mass in the hopper in real time and optimize the hopper structure. At the same time, the inner wall of the hopper is coated with an anti-stick coating to reduce the problem of sticking.
Real-time monitoring and optimization of the hopper structure is achieved, excavation efficiency and bulk filling rate are improved, adhesive problems are reduced, and maintenance and maintenance costs are reduced.
Smart Images
Figure CN222475572U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cargo ship unloading, in particular to a hopper chain and a ship unloader with the same. Background Art
[0002] At present, cargo ships carrying bulk materials by sea generally need to use hopper chain unloaders to unload the bulk materials in the cabin. The hopper chain unloader connects multiple hoppers through chains, and then uses a driving mechanism to make the chains move in a cycle, thereby driving multiple hoppers to dig out the bulk materials in the cabin.
[0003] In order to unload bulk materials efficiently, the hopper capacity is usually increased. However, due to the size of the cargo ship hatch, an oversized hopper cannot be flexibly moved in and out of the cabin, which affects the excavation efficiency. Therefore, it is necessary to design a reasonable hopper structure to increase the bulk material filling rate of the hopper.
[0004] However, in the actual excavation process, the particle size and adhesion of different types of bulk materials vary greatly, making it difficult to design a truly practical hopper structure through simulation. Utility Model Content
[0005] In view of this, the utility model provides a hopper chain and a ship unloader having the same, so as to solve the problem that the types of existing bulk materials vary greatly and it is difficult to design a truly practical hopper chain structure through simulation.
[0006] In the first aspect, the utility model provides a hopper chain, including a hopper, a chain and a gravity sensor. There are multiple hoppers, each of which is provided with a first connection hole. The chain connects the multiple hoppers in series, and a plurality of second connection holes are provided along the extension direction of the chain, and the second connection holes are arranged one-to-one with the first connection holes. There are multiple gravity sensors, and the multiple gravity sensors are respectively inserted into the corresponding groups of first connection holes and second connection holes and locked by fasteners, and the hopper is connected to the chain through the gravity sensor.
[0007] In an optional embodiment, there are two chains, which are connected to two sides of the hopper through gravity sensors respectively; the gravity sensors are symmetrically distributed on both sides of the hopper.
[0008] In an optional embodiment, the first connecting hole includes a bolt hole and a pin shaft hole with different hole diameters; the gravity sensor includes a first gravity sensor and a second gravity sensor with different diameters, the first gravity sensor is adapted to the bolt hole, and the second gravity sensor is adapted to the pin shaft hole.
[0009] In an optional embodiment, two first gravity sensors and two second gravity sensors are respectively provided on both sides of the hopper; the two first gravity sensors are diagonally arranged, and the two second gravity sensors are diagonally arranged.
[0010] In an optional embodiment, a first connecting plate is provided on both sides of the hopper, and the first connecting plate is provided with a first connecting hole; the chain includes an inner chain and an outer chain arranged at intervals, the inner chain and the outer chain are connected by a chain shaft, the inner chain is provided with a second connecting plate, the second connecting plate is provided with a second connecting hole, the second connecting plate is abutted against the first connecting plate, and the second connecting plate is connected to the first connecting plate through a gravity sensor.
[0011] In an optional embodiment, the two ends of the gravity sensor are respectively a wiring terminal and a connecting end, the wiring terminal is provided with a limiting portion, and the connecting end is provided with a thread; the gravity sensor passes through the second connecting plate and the first connecting plate, the inner chain avoids the second connecting plate, the wiring terminal is located between the inner chain and the outer chain, the limiting portion abuts against the second connecting plate, and the connecting end is located on the inner side of the first connecting plate; the fastener includes a nut, and the nut is threaded and locked with the connecting end.
[0012] In an optional embodiment, the fastener also includes a limit plate and a screw; a storage groove is provided on the side of the second connecting plate facing the outer chain, and the bottom end of the limit portion is located in the storage groove; the top ends of the limit portions of the adjacent first gravity sensor and the second gravity sensor are respectively provided with snap-in grooves, and the two ends of the limit plate are respectively abutted in the snap-in grooves of the two, and the plate surface of the limit plate is abutted against the second connecting plate, and the screws are passed through the limit plate and the second connecting plate.
[0013] In an optional embodiment, a cover is provided between the inner chain and the outer chain, the cover is provided on the wiring terminal, and the cover is connected to the second connecting plate via a stud.
[0014] In an optional embodiment, the inner wall of the hopper is sprayed with an anti-stick coating.
[0015] In a second aspect, the utility model further provides a ship unloader, comprising a driving mechanism and the bucket chain of the first aspect, wherein the driving mechanism drives the bucket chain to move and dig materials.
[0016] Beneficial effects:
[0017] In the first aspect, the hopper is provided with a gravity sensor, and the mass of the bulk material filled in the hopper can be obtained in real time through the signal fed back by the gravity sensor and through background calculation, so as to obtain the data of the actual excavation of the bulk material and compare the actual data of hoppers with different structures, so as to facilitate the continuous optimization of the design of the hopper structure; this solution has fewer workpieces, simple manufacturing, low cost and strong practicality; in addition, this solution connects the hopper and the chain through a gravity sensor to replace the traditional connecting parts. The gravity sensor does not take up additional space, and the connection is firm and maintenance is simple.
[0018] The ship unloader of the second aspect includes the bucket chain of the first aspect, and thus the ship unloader of the second aspect has all the beneficial effects of the bucket chain of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Description of the drawings:
[0021] Figure 1 It is a side view of the hopper chain according to an embodiment of the utility model;
[0022] Figure 2 A top view of the hopper chain according to an embodiment of the utility model;
[0023] Figure 3 for Figure 1 A magnified view of the connection between the middle hopper and the chain;
[0024] Figure 4 for Figure 3 Side section view of the
[0025] Figure 5 for Figure 3 Cross-sectional view of the location.
[0026] Description of reference numerals:
[0027] 100. Hopper chain;
[0028] 110, hopper; 120, chain; 130, gravity sensor; 140, cover;
[0029] 111. first connecting plate; 112. reinforcing rib; 113. raised portion;
[0030] 121, inner chain; 122, outer chain; 123, chain shaft; 124, storage slot; 125, second connecting plate;
[0031] 131. first gravity sensor; 132. second gravity sensor; 133. wiring terminal; 134. connecting terminal; 135. limiting portion; 136. clamping groove; 137. nut; 138. limiting plate; 139. screw;
[0032] 141. Stud. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0034] In order to deepen the understanding of the solution of the utility model, it is necessary to elaborate on the technical problems in detail in combination with relevant technologies. The specific contents are as follows:
[0035] At present, cargo ships carrying bulk materials by sea generally need to use hopper chain unloaders to unload the bulk materials in the cabin. The hopper chain unloader connects multiple hoppers through chains, and then uses a driving mechanism to make the chains move in a cycle, thereby driving multiple hoppers to dig out the bulk materials in the cabin.
[0036] The operating efficiency of the hopper chain ship unloader directly affects the shipowner's ship time. In order to efficiently unload bulk materials, it is usually chosen to increase the capacity of the hopper. However, due to the size of the cargo ship hatch, an oversized hopper cannot be flexibly entered and exited the cabin, which affects the excavation efficiency. Therefore, it is necessary to design a reasonable hopper structure to increase the bulk material filling rate of the hopper. Among them, the optimization design of the hopper chain is mainly to increase the hopper filling rate, reduce the resistance during the excavation process, and maximize the loading and unloading efficiency of the hopper chain ship unloader.
[0037] However, in the actual excavation process, the particle size and adhesion of different types of bulk materials vary greatly, making it difficult to design a truly practical hopper structure through simulation.
[0038] It is further explained that in theory, it is difficult to directly detect the filling rate of the hopper chain. It can be simulated using simulation software, but it is necessary to measure the particle size, humidity and other information of the corresponding bulk material. The parameters of different forms of bulk materials are different and cannot be simulated and analyzed one by one. In addition, the simulation time is too long and the effect is not ideal.
[0039] In addition, the hopper chain ship unloader will have the problem of sticking materials when unloading wet materials such as coal. Bulk materials with high humidity will be adsorbed on the inner wall of the hopper, affecting the loading and unloading capacity of the hopper. The traditional hopper chain ship unloader needs to stop and flush the hopper chain at regular intervals, which is time-consuming and labor-intensive.
[0040] In order to alleviate the above technical problems, the utility model provides a hopper chain and a ship unloader having the same. Figures 1 to 5 The embodiments of the present utility model are described in detail.
[0041] First, refer to Figure 1 and Figure 2The utility model provides a hopper chain 100, including a hopper 110, a chain 120 and a gravity sensor 130. There are multiple hoppers 110, and each of the multiple hoppers 110 is provided with a first connection hole. The chain 120 connects the multiple hoppers 110 in series, and a plurality of second connection holes are provided along the extension direction of the chain 120, and the second connection holes are arranged one by one corresponding to the first connection holes. There are multiple gravity sensors 130, and the multiple gravity sensors 130 are respectively inserted into the corresponding groups of first connection holes and second connection holes and locked by fasteners, and the hopper 110 is connected to the chain 120 through the gravity sensor 130.
[0042] Specifically, the hopper 110 is provided with a gravity sensor 130. Through the signal fed back by the gravity sensor 130 and through background calculation, the mass of the bulk material filled in the hopper 110 can be obtained in real time, and then the data of the actual excavation of the bulk material can be obtained, and the actual data of the hoppers 110 with different structures can be compared, so as to facilitate the continuous optimization of the design of the hopper 110 structure. This solution has fewer workpieces, simple manufacturing, low cost and strong practicality. In addition, this solution connects the hopper 110 and the chain 120 through the gravity sensor 130 to replace the traditional connecting parts. The gravity sensor 130 does not take up additional space, and the connection is firm and maintenance is simple.
[0043] In particular, the gravity sensor 130 used in this patent is a pin-type force sensor, which is composed of a shell, an elastic element, a sensor circuit and other parts. The shell is made of stainless steel material, which has high strength and corrosion resistance and protects the internal structure of the sensor. The elastic element is usually in the form of a film or a spring, and has certain elastic properties. The sensor circuit converts the deformation of the elastic element into an electrical signal output. The measured force acts on the elastic element of the pin-type force sensor to produce elastic deformation. This elastic deformation can be in the form of stretching, compression or bending of the elastic element. The elastic element produces a small deformation under the action of external force, thereby changing electrical parameters such as resistance, capacitance, and inductance. The sensor circuit converts the changes in these electrical parameters into electrical signal outputs. The measurement and control of force are achieved by processing and analyzing on equipment such as a data acquisition system.
[0044] It should be noted that the hopper 110 is lifted or moved by being pulled by the chain 120, that is, the weight of the hopper 110 and the bulk material filled therein are all applied to the chain 120, and the hopper 110 is connected to the chain 120 via the gravity sensor 130, so the gravity of the hopper 110 and the bulk material will be applied to the gravity sensor 130, and affect the elastic element of the gravity sensor 130, thereby measuring the gravity of the hopper 110 and the bulk material, and then being able to calculate the total mass of the hopper 110 and the bulk material, wherein the mass of the hopper 110 is measured in advance, so the mass of the bulk material filled in the hopper 110 is finally obtained in real time. Similarly, actual tests are conducted on a plurality of hoppers 110 with different structures, and a hopper 110 with a better bulk material filling rate is selected, and the structure of the hopper 110 is continuously optimized through this solution in actual use. This solution can provide real-time data feedback through the gravity sensor 130 during actual use of the hopper 110, and obtain the quality of the excavated bulk material through background calculation. It has a simple structure, is easy to operate, and has good practical effects.
[0045] In particular, the solution can also calculate the mass of wet material adhered to the hopper 110 after the hopper 110 is unloaded, and the wear mass of the hopper 110 in an empty state after the hopper 110 has been used for a period of time. The solution has many uses and a wide range of applications.
[0046] In some embodiments, reference Figure 2 The chains 120 have two links, which are connected to both sides of the hopper 110 through gravity sensors 130 ; the gravity sensors 130 are symmetrically distributed on both sides of the hopper 110 .
[0047] Specifically, in this solution, a chain 120 is connected to both sides of the hopper 110 through a gravity sensor 130, and the two chains 120 are connected to both sides of the hopper 110, so that the connection of the hopper 110 is more secure, and the hopper 110 is not easy to shake during the excavation process. In addition, gravity sensors 130 are set on both sides of the hopper 110, which can deal with the situation that when the hopper 110 has an irregular structure, gravity sensors 130 are set at different positions of the hopper 110, and there are deviations between the measurement results. The data fed back by multiple gravity sensors 130 in this solution can more truly reflect the situation of each part of the hopper 110, so that the final calculation result is more accurate; and each hopper 110 is equipped with multiple gravity sensors 130, which can avoid the damage of a single gravity sensor 130, and the data feedback work during excavation can be carried out as usual through other gravity sensors 130.
[0048] In some embodiments, reference Figures 3 to 5The first connecting hole includes a bolt hole and a pin hole with different hole diameters; the gravity sensor 130 includes a first gravity sensor 131 and a second gravity sensor 132 with different diameters, the first gravity sensor 131 is adapted to the bolt hole, and the second gravity sensor 132 is adapted to the pin hole.
[0049] Specifically, in this solution, gravity sensors 130 of different diameters are adapted to the first connecting holes of different apertures of the hopper 110 itself. Specifically, the first gravity sensor 131 is used to replace the original bolt hole for the bolt, and the second gravity sensor 132 is used to replace the original pin hole for the pin. There is no need to open an additional hole to set the gravity sensor 130, and the original bolts and pins can be omitted. The structure is reasonable, the space occupied is small, and the cost is saved.
[0050] In some embodiments, reference Figure 3 Two first gravity sensors 131 and two second gravity sensors 132 are respectively disposed on both sides of the hopper 110; the two first gravity sensors 131 are diagonally disposed, and the two second gravity sensors 132 are diagonally disposed.
[0051] Specifically, this scheme is a specific arrangement method of the first gravity sensor 131 and the second gravity sensor 132. The two gravity sensors 130 are diagonally staggered on each side of the hopper 110, which not only adapts to the reserved holes of different apertures of the hopper 110; but also each hopper 110 is provided with four gravity sensors 130 on one side and eight gravity sensors 130 on both sides, which can cope with the situation when the hopper 110 has an irregular structure and gravity sensors 130 are provided at different positions of the hopper 110, and there are deviations between the measurement results. In this scheme, the data fed back by multiple gravity sensors 130 can more truly reflect the conditions of each part of the hopper 110, so that the final calculation result is more accurate, and each hopper 110 is provided with multiple gravity sensors 130, which can avoid the damage of a single gravity sensor 130, and the data feedback work during excavation can be carried out as usual through other gravity sensors 130.
[0052] In some embodiments, reference Figure 2 A first connecting plate 111 is provided on both sides of the hopper 110, and the first connecting plate 111 has a first connecting hole; the chain 120 includes an inner chain 121 and an outer chain 122 arranged at intervals, the inner chain 121 and the outer chain 122 are connected by a chain shaft 123, the inner chain 121 is provided with a second connecting plate 125, the second connecting plate 125 has a second connecting hole, the second connecting plate 125 abuts against the first connecting plate 111, and the second connecting plate 125 is connected to the first connecting plate 111 through a gravity sensor 130.
[0053] Specifically, in this solution, first connecting plates 111 are additionally provided on both sides of the hopper 110 , and the chain 120 is connected to the first connecting plates 111 instead of to the side walls of the hopper 110 , thereby not damaging the side walls of the hopper 110 and preventing material leakage.
[0054] More specifically, protrusions 113 are provided on both sides of the hopper 110, and the protrusions 113 are fixedly connected to the first connecting plates 111. The top of the hopper 110 is provided with reinforcing ribs 112 along its width direction, and the reinforcing ribs 112 are fixedly connected to the first connecting plates 111 on both sides of the hopper 110, and the structure is firm.
[0055] In particular, the extension position of the chain 120 is slightly higher than the first connecting plate 111 of the hopper 110, and a second connecting plate 125 is provided at the connection between the inner chain 121 and the first connecting plate 111, and the second connecting plate 125 is tilted or bent downward to adapt to this structure.
[0056] It should be noted that the links in the inner chain 121 are transitionally connected via the second connecting plate 125 , so it can also be said that the terminal 133 and the cover 140 of the gravity sensor 130 are disposed between the second connecting plate 125 and the outer chain 122 .
[0057] In some embodiments, reference Figure 4 and Figure 5 The two ends of the gravity sensor 130 are respectively a wiring terminal 133 and a connecting end 134, the wiring terminal 133 is provided with a limiting portion 135, and the connecting end 134 is provided with a thread; the gravity sensor 130 passes through the second connecting plate 125 and the first connecting plate 111, the inner chain 121 avoids the second connecting plate 125, the wiring terminal 133 is located between the inner chain 121 and the outer chain 122, the limiting portion 135 abuts against the second connecting plate 125, and the connecting end 134 is located on the inner side of the first connecting plate 111; the fastener includes a nut 137, and the nut 137 is screwed and locked with the connecting end 134.
[0058] Specifically, this solution is a specific structure of the gravity sensor 130, which is axially limited at the first connecting plate 111 and the second connecting plate 125 by the limiting portion 135 and the nut 137 of the connecting end 134, and has a simple structure and a firm connection; in addition, the wiring terminal 133 of the gravity sensor 130 is arranged between the inner chain 121 and the outer chain 122, and the wiring terminal 133 is electrically connected to the electronic device, and the electronic device is arranged between the inner chain 121 and the outer chain 122 and is thereby protected, and can improve space utilization.
[0059] More specifically, electronic components include, but are not limited to, circuit boards, power supplies, and data storage.
[0060] In some embodiments, reference Figure 4The fasteners also include a limit plate 138 and a screw 139; a receiving groove 124 is provided on the side of the second connecting plate 125 facing the outer chain 122, and the bottom end of the limit portion 135 is located in the receiving groove 124; the top ends of the limit portions 135 of the adjacent first gravity sensor 131 and the second gravity sensor 132 are respectively provided with a snap-in groove 136, and the two ends of the limit plate 138 are respectively abutted in the snap-in grooves 136 of the two, and the plate surface of the limit plate 138 is abutted against the second connecting plate 125, and the screw 139 passes through the limit plate 138 and the second connecting plate 125.
[0061] Specifically, this scheme is a specific connection method between the gravity sensor 130 and the second connecting plate 125. The limiting parts 135 of the two adjacent gravity sensors 130 are provided with relative snap-in grooves 136. The two ends of the limiting plate 138 are arranged in the snap-in grooves 136 and are locked to the second connecting plate 125 by screws 139. Thus, the limiting part 135 of the gravity sensor 130 is axially limited by the receiving groove 124 of the second connecting plate 125 and the limiting plate 138, so that the setting of the gravity sensor 130 is more firm and not easy to shake.
[0062] In some embodiments, reference Figure 5 A cover body 140 is provided between the inner chain 121 and the outer chain 122 . The cover body 140 is covered on the wiring terminal 133 . The cover body 140 is connected to the second connecting plate 125 through a stud 141 .
[0063] Specifically, the cover 140 is disposed on the terminal 133, and can further protect electronic devices such as a power supply, a circuit board, and a data storage device that are electrically connected to the terminal 133. The cover 140 is connected to the second connecting plate 125 through the stud 141, and the connection is firm. The cover 140 is located between the inner chain 121 and the outer chain 122, which improves space utilization. The cover 140 does not interfere with other components, and the structure is reasonable.
[0064] More specifically, two studs 141 are spaced apart in each cover 140 , one end of the stud 141 can be welded to the second connecting plate 125 , and the other end of the stud 141 passes from the inside of the cover 140 to the outside of the cover 140 and is locked by an anti-drop nut.
[0065] Furthermore, first connecting plates 111 are fixedly provided on both sides of the hopper 110, chains 120 are provided on both sides of the hopper 110, the chain 120 is provided with a second connecting plate 125, and the first connecting plate 111 and the second connecting plate 125 are connected through a gravity sensor 130; and cover bodies 140 are provided on both sides of the hopper 110.
[0066] In some embodiments, the inner wall of the hopper 110 is sprayed with an anti-stick coating.
[0067] Specifically, in this solution, the inner wall of the hopper 110 is sprayed with an anti-stick coating, which can reduce or even avoid the adhesion of wet materials in the hopper 110, improve the unloading efficiency, save the step of flushing the hopper 110, and save work time.
[0068] More specifically, the present solution performs special treatment on the interior of the hopper 110 to form a layer of polymer anti-sticking protective film on its surface, which can effectively prevent the problem of sticking. The polymer anti-sticking layer is prepared by mold cladding. First, a mold with the same morphology as the inner cavity of the hopper 110 is prepared. When the polymer anti-sticking layer is clad, a gap is formed between the mold and the inner cavity of the hopper 110, and the polymer material is filled into the gap so that the polymer material is evenly covered on the inner surface of the hopper 110. In order to efficiently detect the performance of the anti-sticking material of the hopper 110, the total mass of the hopper 110 during operation is detected.
[0069] Secondly, the utility model also provides a ship unloader, comprising a driving mechanism and the bucket chain 100 of the first aspect, wherein the driving mechanism drives the bucket chain 100 to move and dig materials.
[0070] Specifically, the ship unloader in this solution includes the hopper chain 100, so the ship unloader in this solution has all the beneficial effects of the hopper chain 100. In addition, the ship unloader in this solution also includes other components, and only the components related to this solution are listed here, but it does not limit the composition of the ship unloader.
[0071] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.
Claims
1. A hopper chain, characterized in that: include: There are multiple hoppers (110), each of which is provided with a first connecting hole; A chain (120) is connected in series with the plurality of hoppers (110), and is provided with a plurality of second connection holes along the extension direction, wherein the second connection holes are arranged in a one-to-one correspondence with the first connection holes; A plurality of gravity sensors (130) are provided, which are respectively inserted into corresponding groups of the first connection holes and the second connection holes and are locked by fasteners. The hopper (110) and the chain (120) are connected via the gravity sensors (130).
2. The bucket chain according to claim 1, characterized in that: The chain (120) has two ends, which are respectively connected to two sides of the hopper (110) through gravity sensors (130); The gravity sensors (130) are symmetrically distributed on both sides of the hopper (110).
3. The bucket chain according to claim 2, characterized in that: The first connecting hole includes a bolt hole and a pin hole with different hole diameters; The gravity sensor (130) comprises a first gravity sensor (131) and a second gravity sensor (132) having different diameters; the first gravity sensor (131) is adapted to the bolt hole, and the second gravity sensor (132) is adapted to the pin shaft hole.
4. The bucket chain according to claim 3, characterized in that: Two first gravity sensors (131) and two second gravity sensors (132) are respectively provided on both sides of the hopper (110); The two first gravity sensors (131) are arranged diagonally, and the two second gravity sensors (132) are arranged diagonally.
5. The bucket chain according to claim 4, characterized in that: First connecting plates (111) are respectively provided on both sides of the hopper (110), and the first connecting plates (111) are provided with the first connecting holes; The chain (120) comprises an inner chain (121) and an outer chain (122) which are arranged at intervals, the inner chain (121) and the outer chain (122) are connected via a chain shaft (123), the inner chain (121) is provided with a second connecting plate (125), the second connecting plate (125) is provided with a second connecting hole, the second connecting plate (125) is abutted against the first connecting plate (111), and the second connecting plate (125) and the first connecting plate (111) are connected via the gravity sensor (130).
6. The bucket chain according to claim 5, characterized in that: The two ends of the gravity sensor (130) are respectively a wiring terminal (133) and a connecting end (134); the wiring terminal (133) is provided with a limiting portion (135), and the connecting end (134) is provided with a thread; The gravity sensor (130) passes through the second connecting plate (125) and the first connecting plate (111), the inner chain (121) avoids the second connecting plate (125), the connection terminal (133) is located between the inner chain (121) and the outer chain (122), the limiting portion (135) abuts against the second connecting plate (125), and the connection end (134) is located on the inner side of the first connecting plate (111); The fastener comprises a nut (137), and the nut (137) is threadedly locked with the connecting end (134).
7. The bucket chain according to claim 6, characterized in that: The fastener also includes a limiting plate (138) and a screw (139); A receiving groove (124) is provided on one side of the second connecting plate (125) facing the outer chain (122), and the bottom end of the limiting portion (135) is located in the receiving groove (124); The top ends of the limiting parts (135) of the adjacent first gravity sensor (131) and the second gravity sensor (132) are respectively provided with snap-in grooves (136), the two ends of the limiting plate (138) are respectively abutted in the snap-in grooves (136) of the two, and the plate surface of the limiting plate (138) is abutted against the second connecting plate (125), and the screw (139) is penetrated through the limiting plate (138) and the second connecting plate (125).
8. The bucket chain according to claim 6, characterized in that: A cover body (140) is provided between the inner chain (121) and the outer chain (122), the cover body (140) is provided to cover the wiring terminal (133), and the cover body (140) is connected to the second connecting plate (125) via a stud (141).
9. The hopper chain according to any one of claims 1 to 8, characterized in that: The inner wall of the hopper (110) is sprayed with an anti-stick coating.
10. A ship unloader, characterized in that: It comprises a driving mechanism and the bucket chain according to any one of claims 1 to 9, wherein the driving mechanism drives the bucket chain to move and dig materials.