Automatic loading and unloading device for a wharf

Abstract

This invention relates to the field of dock transportation equipment technology and discloses an automatic loading and unloading transportation device for docks. The device includes a fixed plate with two sets of rotating rods rotatably connected to its bottom. A folding frame is rotatably connected to the end of each rotating rod away from the fixed plate. Before the grab bucket grabs material, it is in an outward-opening state. After the device closes, the sliding baffle is at the bottom of the device, and the inner wall of the grab bucket becomes the main load-bearing position. Most of the weight of the grab bucket is applied to the sliding baffle, forcing it to rotate downwards around the circular rod, thus expanding the internal volume of the grab bucket. Through the application of the above components, after the device completes the grab, the sliding baffle at the bottom provides sufficient bearing space for the loose grain at the top, ensuring that the grain inside the grab bucket will not fall due to excessive accumulation when moving after each grain grab.

Description

Technical Field

[0001] This invention relates to the field of port transportation equipment technology, specifically to an automated loading and unloading transportation device for ports. Background Technology

[0002] A grab bucket is a special tool used by cranes to grab dry bulk cargo. It plays an important role in loading and unloading operations at the dock. The grab bucket is operated by the steel wire rope of the crane's lifting mechanism. When the jaw plates close in the material pile, the material is grabbed into the container space formed by two or more bucket-shaped jaw plates that can be opened and closed.

[0003] During the unloading of bulk grains, such as soybeans, the grains are often moved from the ship's hold to the hopper using a grab bucket to complete the basic transportation process. However, during this process, the grab bucket is difficult to operate precisely, resulting in the grab bucket being overfilled. When the grab bucket moves laterally in this state, the grains may fall due to its own inertia or strong sea winds. To address these issues, the following solutions are proposed. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides an automatic loading and unloading transportation device for docks, including a fixed plate, two sets of rotating rods rotatably connected to the bottom of the fixed plate, and a folding frame rotatably connected to the end of the rotating rods away from the fixed plate, and further including:

[0005] The power mechanism is fixedly connected to the outer wall of the folding frame and is used to drive the folding frame to fold and rotate.

[0006] The auxiliary mechanism is rotatably connected to the inner wall of the power mechanism, and is used to reserve buffer space for the internal space of the power mechanism when the power mechanism grabs loose grain.

[0007] The limiting mechanism is fixedly connected to the outer wall of the power mechanism and is used to limit the rotation range of the auxiliary mechanism when it rotates.

[0008] Before use, the external steel cable is first fitted onto the outer wall of the power mechanism. The power mechanism will drive the folding frame to fold and complete the basic gripping process. During this process, the auxiliary mechanism and the limiting mechanism will provide additional space for the loose grain inside the power mechanism.

[0009] Preferably, the power mechanism includes:

[0010] The tension assembly is fixedly connected to the bottom of the folding frame via a tension member;

[0011] The tensioning component includes a fixed connection to the top support plate of the folding frame, and a pulley system is rotatably connected to the top of the support plate;

[0012] The gripping component is fixedly connected to the bottom of the folding frame via gripping parts;

[0013] The gripping component includes a gripper fixedly connected to the bottom of the folding frame, and a through hole is provided on the side wall of the gripper;

[0014] During use, the external steel cable pulls the pulley block, forcing the pulley block and support plate to move upwards synchronously. The upward-moving support plate forces the folding frame to retract and fold, thereby causing the grab bucket to retract and grab the loose grain at the bottom.

[0015] Preferably, the auxiliary mechanism includes:

[0016] A shielding assembly is rotatably connected to the inner wall of the groove one via a pressure component;

[0017] The pressure component includes a round rod rotatably connected to the inner wall of a groove, and a sliding baffle is fixedly connected to the side wall of the round rod;

[0018] The contact component is fixedly connected to the side wall of the sliding baffle by a counterweight.

[0019] The counterweight includes a counterweight block fixedly connected to the side wall of the sliding baffle, and an inclined plate fixedly connected to the inner wall of the groove of the sliding baffle.

[0020] When the grab bucket is tilted upwards, making it nearly perpendicular to the horizontal plane, the counterweight will force the sliding baffle to rotate around the round rod, causing the sliding baffle to bulge outwards inside the grab bucket, thus reducing the space inside the grab bucket.

[0021] Preferably, the limiting mechanism includes:

[0022] The pulling assembly is fixedly connected to the outer wall of the grab bucket via positioning components;

[0023] The positioning component includes a limiting block fixedly connected to the outer wall of the grab bucket, and a rotating block rotatably connected to the inner wall of the limiting block;

[0024] The limiting component is fixedly connected to the inner wall of the shielding component;

[0025] When the sliding baffle rotates, the tensioning component will extend or retract accordingly.

[0026] Preferably, the tensioning assembly includes a reinforcing frame fixedly connected to the side wall of the folding frame, with the end of the reinforcing frame away from the folding frame fixedly connected to the inner wall of the grab bucket;

[0027] When the grab bucket moves the sliding baffle to the top of the bulk grain, the equipment will gradually be buried inside the bulk grain due to its own weight. Then the support plate pulls the folding frame to close the grab bucket and complete the grabbing process.

[0028] Preferably, the gripping assembly includes a force-bearing plate fixedly connected to the inner wall of the gripper;

[0029] The reinforcing frame and load-bearing plate are designed to strengthen the pressure resistance of the inner wall of the grab bucket.

[0030] Preferably, the shielding component includes a groove formed in the side wall of the sliding baffle;

[0031] When the grab bucket is inserted vertically into the bulk grain, both the front and rear ends of the sliding baffle will be in contact with the bulk grain, and the presence of the bulk grain will restrict the rotation of the sliding baffle.

[0032] Preferably, the contact component includes a second through hole formed in the side wall of the inclined panel;

[0033] When the grab bucket closes, the inclined surface of the inclined plate will contact the outer wall of the bulk grain, and due to the influence of the inclined surface of the inclined plate, more grain will be squeezed into the interior of the sliding baffle.

[0034] Preferably, the pulling assembly includes a telescopic rod fixedly connected to the side wall of the rotating block;

[0035] When the sliding baffle rotates, the telescopic rod will extend or retract accordingly. When the telescopic rod is fully extended, the arc surface of the sliding baffle and the arc surface of the inner wall of the grab bucket are not horizontal.

[0036] Preferably, the limiting component includes a cylinder fixedly connected to the end of the telescopic rod away from the rotating block, and a U-shaped plate fixedly connected to the inner wall of the groove, with the inner wall of the U-shaped plate rotatably connected to the outer wall of the cylinder.

[0037] When the sliding baffle is pressed and rotates outward around the round rod, the bulge formed by the sliding baffle inside the grab bucket will slowly move downward and eventually expand the internal volume of the grab bucket.

[0038] The present invention has the following beneficial effects:

[0039] (1) Before the grab bucket grabs material, it is in an outward-opening state. A shielding component is installed inside the equipment. When the grab bucket is tilted upward, making it nearly perpendicular to the horizontal plane, the counterweight will force the sliding baffle to rotate around the round rod, causing the sliding baffle to form an outward-protruding state inside the grab bucket, thus reducing the space inside the grab bucket. After the equipment is closed, the sliding baffle will be at the bottom of the equipment. During this process, the grab bucket will... Figure 4 The state changes to Figure 1In this state, the inner wall of the grab bucket becomes the main load-bearing position, and most of the weight of the grab bucket is applied to the sliding baffle, forcing the sliding baffle to rotate downward around the round rod, so that the sliding baffle changes from state H to state D, increasing the internal volume of the grab bucket. Through the application of the above components, after the equipment completes the grab, the sliding baffle at the bottom provides sufficient bearing space for the loose grain at the top, ensuring that the grain inside the grab bucket will not fall due to excessive accumulation when moving after each grain grab.

[0040] (2) This invention utilizes the feature of the above-mentioned equipment being embedded inside the bulk grain, and sets the sliding baffle in an arc shape. After the sliding baffle opens outward, the counterweight will force the sliding baffle to present an arc shape. Figure 4 In this state, when the sliding baffle is slowly buried inside the bulk grain, the left and right ends of the sliding baffle are squeezed by the bulk grain. This prevents the sliding baffle from rotating outwards before closing due to the bulk grain filling inside, which would reduce the reserved space inside the grab bucket and affect the anti-overflow effect of the equipment.

[0041] (3) This invention utilizes the characteristic that bulk grain inside the ship's hold will clump together after being squeezed by the bulk grain at the top. An inclined panel is installed inside the equipment. During the closing process of the grab bucket, the bulk grain inside the grab bucket is squeezed and changes from a clumped state to a loose state. The clumped bulk grain at the bottom of the grab bucket will come into contact with the inclined panel, such as... Figure 8 As shown, when the grab bucket rotates along path G, the resistance encountered by the inclined plate when it comes into contact with the clumped grain will force the sliding baffle to rotate upward. Through the application of the above components, the sliding baffle will change from a secondary force-bearing position on the side wall to a primary force-bearing position during the gradual closing process. The upward thrust provided by the inclined plate will effectively prevent the sliding baffle from rotating downward when it reaches the primary load-bearing position, thus avoiding affecting the application of the equipment.

[0042] (4) After the grab bucket forms the main load-bearing position, as the pulling component is pulled up, the limiting force of the inclined panel and the bottom of the sliding baffle disappears. At this time, the sliding baffle will rotate downward around the round rod and force the telescopic rod to extend. When the telescopic rod is extended to its longest state, the arc-shaped inner wall of the sliding baffle will make the arc-shaped inner wall of the grab bucket non-horizontal. Through the above-mentioned protruding design, when the sliding baffle is pressed and reset, the downward sliding baffle will not squeeze the grain in the gap position, causing the loose grain in that position to be crushed. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a bottom view of the overall structure of the present invention;

[0045] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0046] Figure 3 This is a schematic diagram of the power mechanism of the present invention;

[0047] Figure 4 This is a schematic diagram of the working state of the grab bucket of the present invention;

[0048] Figure 5 For the present invention Figure 4 Enlarged diagram of A in the middle;

[0049] Figure 6 This is a schematic diagram of the back of the contact component of the present invention;

[0050] Figure 7 This is a front view of the contact component of the present invention;

[0051] Figure 8 This is a schematic diagram of the working state of the limiting mechanism of the present invention.

[0052] The attached diagram lists the components represented by each number as follows:

[0053] In the diagram: 1. Power mechanism; 11. Pulling assembly; 12. Grabbing assembly; 13. Fixing plate; 14. Rotating rod; 15. Folding frame; 111. Support plate; 112. Pulley block; 113. Reinforcing frame; 121. Grab bucket; 122. Force plate; 123. Through hole; 2. Auxiliary mechanism; 21. Blocking assembly; 22. Contact assembly; 211. Round rod; 212. Sliding baffle; 213. Groove one; 221. Counterweight block; 222. Inclined panel; 223. Through hole two; 3. Restriction mechanism; 31. Pulling assembly; 32. Restriction assembly; 311. Restriction block; 312. Rotating block; 313. Telescopic rod; 321. U-shaped plate; 322. Cylinder. Detailed Implementation

[0054] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] Example 1, please refer to Figures 1-5 The present invention is an automatic loading and unloading transportation device for a dock, including a fixed plate 13, two sets of rotating rods 14 rotatably connected to the bottom of the fixed plate 13, and a folding frame 15 rotatably connected to the end of the rotating rods 14 away from the fixed plate 13, and further including:

[0056] Power mechanism 1 is fixedly connected to the outer wall of the folding frame 15 and is used to drive the folding frame 15 to fold and rotate.

[0057] Auxiliary mechanism 2 is rotatably connected to the inner wall of power mechanism 1, and is used to reserve buffer space for the internal space of power mechanism 1 when power mechanism 1 grabs loose grain;

[0058] The limiting mechanism 3 is fixedly connected to the outer wall of the power mechanism 1 and is used to limit the rotation amplitude of the auxiliary mechanism 2 when the auxiliary mechanism 2 rotates.

[0059] Before use, the external steel cable is first fitted onto the outer wall of the power mechanism 1. The power mechanism 1 will drive the folding frame 15 to fold and complete the basic gripping process. During this process, the auxiliary mechanism 2 and the limiting mechanism 3 will provide additional space for the loose grain inside the power mechanism 1.

[0060] Power mechanism 1 includes:

[0061] The tension assembly 11 is fixedly connected to the bottom of the folding frame 15 by a tension member;

[0062] The tensioning component includes a top support plate 111 fixedly connected to the top of the folding frame 15, and a pulley group 112 rotatably connected to the top of the support plate 111.

[0063] The gripping component 12 is fixedly connected to the bottom of the folding frame 15 via gripping parts;

[0064] The gripping component includes a gripper 121 fixedly connected to the bottom of the folding frame 15, and a through hole 123 is provided on the side wall of the gripper 121;

[0065] During use, the external steel cable will pull the pulley block 112, forcing the pulley block 112 and the support plate 111 to move upward synchronously. The upward-moving support plate 111 will force the folding frame 15 to retract and fold, thereby driving the grab bucket 121 to retract and grab the loose grain at the bottom.

[0066] Auxiliary mechanism 2 includes:

[0067] The shielding component 21 is rotatably connected to the inner wall of the groove 213 via a pressure member;

[0068] The pressure component includes a round rod 211 rotatably connected to the inner wall of the groove 213, and a sliding baffle 212 is fixedly connected to the side wall of the round rod 211;

[0069] Contact component 22 is fixedly connected to the side wall of sliding baffle 212 by a counterweight;

[0070] The counterweight includes a counterweight block 221 fixedly connected to the side wall of the sliding baffle 212, and an inclined plate 222 fixedly connected to the inner wall of the groove of the sliding baffle 212.

[0071] When the grab bucket 121 is tilted upwards, making it nearly perpendicular to the horizontal plane, the counterweight 221 will force the sliding baffle 212 to rotate around the round rod 211, causing the sliding baffle 212 to form an outward convex state inside the grab bucket 121, thereby reducing the space inside the grab bucket 121.

[0072] Restricted agency 3 includes:

[0073] The pulling component 31 is fixedly connected to the outer wall of the grab bucket 121 by a positioning element;

[0074] The positioning component includes a limiting block 311 fixedly connected to the outer wall of the grab bucket 121, and a rotating block 312 rotatably connected to the inner wall of the limiting block 311;

[0075] The limiting component 32 is fixedly connected to the inner wall of the shielding component 21;

[0076] When the sliding baffle 212 rotates, the pulling component 31 will extend or retract accordingly.

[0077] After the device closes, the sliding baffle 212 will be at the bottom of the device, and during this process, the grab bucket 121 will... Figure 4 The state changes to Figure 1In this state, the inner wall of the grab bucket 121 will become the main load-bearing position, and most of the weight of the grab bucket 121 will be applied to the sliding baffle 212, forcing the sliding baffle 212 to rotate downward around the round rod 211, so that the sliding baffle 212 changes from state H to state D, expanding the internal volume of the grab bucket 121. Through the application of the above components, after the equipment completes the grab, the bottom sliding baffle 212 provides sufficient bearing space for the loose grain at the top, ensuring that the grain inside the grab bucket 121 will not fall due to excessive accumulation when moving after each grain grab.

[0078] Example 2, please refer to Figures 2-8 The present invention is an automatic loading and unloading transportation device for docks. Based on Example 1, the tension component 11 includes a reinforcing frame 113 fixedly connected to the side wall of the folding frame 15. The end of the reinforcing frame 113 away from the folding frame 15 is fixedly connected to the inner wall of the grab bucket 121.

[0079] When the grab bucket 121 moves the sliding baffle 212 to the top of the bulk grain, the equipment will gradually be buried inside the bulk grain due to its own excessive weight. Then the support plate 111 pulls the folding frame 15 to close the grab bucket 121 and complete the grabbing process.

[0080] Taking advantage of the fact that the aforementioned equipment is embedded inside the bulk grain, the sliding baffle 212 is set in an arc shape. After the sliding baffle 212 opens outward, the counterweight 221 will force the sliding baffle 212 to present an arc shape. Figure 4 In this state, when the sliding baffle 212 is slowly buried inside the bulk grain, the left and right ends of the sliding baffle 212 are squeezed by the bulk grain. This prevents the sliding baffle 212 from rotating outward before closing due to the bulk grain filling inside, which would reduce the reserved space inside the grab bucket 121 and affect the anti-overflow effect of the equipment.

[0081] The gripping assembly 12 includes a force-bearing plate 122 fixedly connected to the inner wall of the gripper 121;

[0082] The function of the reinforcing frame 113 and the stress plate 122 is to strengthen the pressure resistance of the inner wall of the grab bucket 121;

[0083] Taking advantage of the characteristic that bulk grain inside the ship's hold will clump together due to compression from the top, an inclined panel 222 is installed inside the equipment. During the closing process of the grab bucket 121, the bulk grain inside the grab bucket 121, after being compressed, changes from a clumped state to a loose state. The clumped bulk grain at the bottom of the grab bucket 121 will come into contact with the inclined panel 222. Figure 8 As shown.

[0084] The shielding component 21 includes a groove 213 formed in the side wall of the sliding baffle 212;

[0085] When the grab bucket 121 is vertically inserted into the bulk grain, both the front and rear ends of the sliding baffle 212 will be in contact with the bulk grain, and the presence of the bulk grain will restrict the rotation of the sliding baffle 212.

[0086] When the grab bucket 121 rotates along the path G, the inclined plate 222 will encounter resistance when it comes into contact with the clumped grain. This resistance will force the sliding baffle 212 to rotate upward. Through the application of the above components, the sliding baffle 212 will change from a secondary force-bearing position to a primary force-bearing position during the gradual closing process. The upward thrust provided by the inclined plate 222 will effectively prevent the sliding baffle 212 from rotating downward when it reaches the primary load-bearing position, thus avoiding any impact on the application of the equipment.

[0087] Contact component 22 includes a through hole 223 formed in the side wall of the inclined panel 222;

[0088] When the grab bucket 121 closes, the inclined surface of the inclined panel 222 will contact the outer wall of the bulk grain, and due to the influence of the inclined surface of the inclined panel 222, more grain will be squeezed into the interior of the sliding baffle 212.

[0089] The tensioning assembly 31 includes a telescopic rod 313 fixedly connected to the side wall of the rotating block 312;

[0090] When the sliding baffle 212 rotates, the telescopic rod 313 will extend and retract accordingly. When the telescopic rod 313 is fully extended, the arc surface of the sliding baffle 212 and the arc surface of the inner wall of the grab bucket 121 are not horizontal.

[0091] After the grab bucket 121 forms the main load-bearing position, as the pulling component 11 pulls upward, the limiting force at the bottom of the inclined panel 222 and the sliding baffle 212 disappears. At this time, the sliding baffle 212 will rotate downward around the round rod 211 and force the telescopic rod 313 to extend. When the telescopic rod 313 is extended to its longest state, the arc-shaped inner wall of the sliding baffle 212 will keep the arc-shaped inner wall of the grab bucket 121 in a non-horizontal state. Through the above-mentioned protruding design, when the sliding baffle 212 is pressed and reset, it is avoided that the downward sliding baffle 212 will squeeze the grain in the gap position, causing the loose grain in that position to be crushed.

[0092] One specific application of this embodiment is as follows: Before use, the external steel cable is first fitted onto the outer wall of the pulley block 112, and after the foundation is installed, the workers use a suspension bridge and steel cable to hoist the equipment into the cabin and place the equipment on top of the bulk grain. Because the equipment itself is too heavy, it will slowly sink into the bulk grain. The workers use a crane to pull the pulley block 112, forcing the pulley block 112 and the support plate 111 to move upward synchronously. The upward-moving support plate 111 will force the folding frame 15 to retract and fold, thereby driving the grab buckets 121 to move closer to each other and close. During this process, the closed grab buckets 121 will grab the bulk grain at the bottom, completing the unloading process of the foundation.

[0093] Before grabbing material, the grab bucket 121 is in an outward-opening state. A shielding component 21 is installed inside the equipment. When the grab bucket 121 is tilted upwards, making it nearly perpendicular to the horizontal plane, the counterweight 221 forces the sliding baffle 212 to rotate around the circular rod 211. This causes the sliding baffle 212 to bulge outwards inside the grab bucket 121, reducing the internal space. After the equipment closes, the sliding baffle 212 is at the bottom of the equipment. During this process, the grab bucket 121 will... Figure 4 The state changes to Figure 1 In this state, the inner wall of the grab bucket 121 will become the main load-bearing position, and most of the weight of the grab bucket 121 will be applied to the sliding baffle 212, forcing the sliding baffle 212 to rotate downward around the round rod 211, so that the sliding baffle 212 changes from state H to state D, expanding the internal volume of the grab bucket 121. Through the application of the above components, after the equipment completes the grab, the bottom sliding baffle 212 provides sufficient bearing space for the loose grain at the top, ensuring that the grain inside the grab bucket 121 will not fall due to excessive accumulation when moving after each grain grab.

[0094] Taking advantage of the fact that the aforementioned equipment is embedded inside the bulk grain, the sliding baffle 212 is set in an arc shape. After the sliding baffle 212 opens outward, the counterweight 221 will force the sliding baffle 212 to present an arc shape. Figure 4 In this state, as the sliding baffle 212 is slowly buried inside the bulk grain, the compression of the bulk grain at both ends of the sliding baffle 212 prevents it from rotating outwards before closing due to the filling of bulk grain. This would reduce the reserved space inside the grab bucket 121 and affect the anti-overflow effect of the equipment.

[0095] Taking advantage of the characteristic that bulk grain inside the ship's hold will clump together due to compression from the top, an inclined panel 222 is installed inside the equipment. During the closing process of the grab bucket 121, the bulk grain inside the grab bucket 121, after being compressed, changes from a clumped state to a loose state. The clumped bulk grain at the bottom of the grab bucket 121 will come into contact with the inclined panel 222. Figure 8 As shown, when the grab bucket 121 rotates along the path G, the inclined plate 222 will be forced to rotate upward by the resistance it receives when it comes into contact with the clumped grain. Through the application of the above components, the sliding baffle 212 will change from the secondary force-bearing position to the primary force-bearing position during the gradual closing process. The upward thrust provided by the inclined plate 222 will effectively prevent the sliding baffle 212 from rotating downward when it reaches the primary load-bearing position, thus avoiding affecting the application of the equipment.

[0096] After the grab bucket 121 forms the main load-bearing position, as the pulling component 11 pulls upward, the limiting force at the bottom of the inclined panel 222 and the sliding baffle 212 disappears. At this time, the sliding baffle 212 will rotate downward around the round rod 211 and force the telescopic rod 313 to extend. When the telescopic rod 313 is extended to its longest state, the arc-shaped inner wall of the sliding baffle 212 will keep the arc-shaped inner wall of the grab bucket 121 in a non-horizontal state. Through the above-mentioned protruding design, when the sliding baffle 212 is pressed and reset, it is avoided that the downward sliding baffle 212 will squeeze the grain in the gap position, causing the loose grain in that position to be crushed.

[0097] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An automated loading and unloading transportation device for a dock, comprising a fixed plate (13), wherein two sets of rotating rods (14) are rotatably connected to the bottom of the fixed plate (13), and a folding frame (15) is rotatably connected to the end of each rotating rod (14) away from the fixed plate (13), characterized in that, Also includes: The power mechanism (1) is fixedly connected to the outer wall of the folding frame (15) and is used to drive the folding frame (15) to fold and rotate. Auxiliary mechanism (2), which is rotatably connected to the auxiliary mechanism (2) on the inner wall of the power mechanism (1), is used to reserve a buffer space for the internal space of the power mechanism (1) when the power mechanism (1) grabs loose grain; The limiting mechanism (3) is fixedly connected to the outer wall of the power mechanism (1) and is used to limit the rotation amplitude of the auxiliary mechanism (2) when the auxiliary mechanism (2) rotates; Before use, the external steel cable is first fitted on the outer wall of the power mechanism (1). The power mechanism (1) will drive the folding frame (15) to fold and complete the basic grasping process. During this process, the auxiliary mechanism (2) and the limiting mechanism (3) will provide additional space for the loose grain inside the power mechanism (1). The power mechanism (1) includes: A tension assembly (11) is fixedly connected to the bottom of the folding frame (15) by a tension member; The tensioning member includes a support plate (111) fixedly connected to the top of the folding frame (15), and a pulley group (112) is rotatably connected to the top of the support plate (111). A gripping component (12) is fixedly connected to the bottom of the folding frame (15) via gripping parts; The gripping component includes a gripper (121) fixedly connected to the bottom of the folding frame (15), and a through hole (123) is provided on the side wall of the gripper (121). When in use, the external steel cable will pull the pulley block (112), forcing the pulley block (112) and the support plate (111) to move upward synchronously. The upward-moving support plate (111) will force the folding frame (15) to retract and fold, thereby driving the grab bucket (121) to retract and grab the loose grain at the bottom. The auxiliary mechanism (2) includes: A shielding assembly (21) is rotatably connected to the inner wall of a groove (213) via a pressure member; The pressure component includes a round rod (211) rotatably connected to the inner wall of the groove (213), and a sliding baffle (212) is fixedly connected to the side wall of the round rod (211). Contact component (22), which is fixedly connected to the side wall of sliding baffle (212) by a counterweight; The counterweight includes a counterweight block (221) fixedly connected to the side wall of the sliding baffle (212), and an inclined plate (222) is fixedly connected to the inner wall of the groove of the sliding baffle (212). When the grab bucket (121) is tilted upwards, making the grab bucket (121) nearly perpendicular to the horizontal plane, the counterweight (221) will force the sliding baffle (212) to rotate around the round rod (211), so that the sliding baffle (212) forms an outward convex state inside the grab bucket (121), thereby reducing the space inside the grab bucket (121).

2. The automated loading and unloading transportation device for a dock according to claim 1, characterized in that: The limiting mechanism (3) includes: A pulling assembly (31) is fixedly connected to the outer wall of the grab bucket (121) by a positioning element; The positioning component includes a limiting block (311) fixedly connected to the outer wall of the grab bucket (121), and a rotating block (312) is rotatably connected to the inner wall of the limiting block (311). A limiting component (32) is fixedly connected to the inner wall of the shielding component (21); When the sliding baffle (212) rotates, the pulling component (31) will extend or retract accordingly.

3. The automated loading and unloading transportation device for a dock according to claim 2, characterized in that: The tension assembly (11) includes a reinforcing frame (113) fixedly connected to the side wall of the folding frame (15), with one end of the reinforcing frame (113) away from the folding frame (15) fixedly connected to the inner wall of the grab bucket (121). When the grab bucket (121) drives the sliding baffle (212) to be placed on top of the bulk grain, the equipment will gradually be buried inside the bulk grain due to its own excessive weight. Then the support plate (111) pulls the folding frame (15) to close the grab bucket (121) and complete the grabbing process.

4. The automated loading and unloading transportation device for a dock according to claim 3, characterized in that: The gripping assembly (12) includes a force-bearing plate (122) fixedly connected to the inner wall of the gripper (121); The function of the reinforcing frame (113) and the force plate (122) is to strengthen the pressure resistance of the inner wall of the grab bucket (121).

5. The automated loading and unloading transportation device for a dock according to claim 4, characterized in that: The shielding component (21) includes a groove (213) formed on the side wall of the sliding baffle (212). When the grab bucket (121) is vertically inserted into the bulk grain, both the front and rear ends of the sliding baffle (212) will be in contact with the bulk grain, and the presence of the bulk grain will restrict the rotation of the sliding baffle (212).

6. The automated loading and unloading transportation device for a dock according to claim 5, characterized in that: The contact component (22) includes a through hole (223) formed in the side wall of the inclined panel (222); When the grab bucket (121) is closed, the inclined surface of the inclined plate (222) will contact the outer wall of the bulk grain, and due to the influence of the inclined surface of the inclined plate (222), more grain will be squeezed into the interior of the sliding baffle (212).

7. The automated loading and unloading transportation device for a dock according to claim 6, characterized in that: The tensioning assembly (31) includes a telescopic rod (313) fixedly connected to the side wall of the rotating block (312). When the sliding baffle (212) rotates, the telescopic rod (313) will extend and retract accordingly. When the telescopic rod (313) is fully extended, the arc surface of the sliding baffle (212) and the arc surface of the inner wall of the grab bucket (121) are not horizontal.

8. The automated loading and unloading transportation device for a dock according to claim 7, characterized in that: The limiting component (32) includes a cylinder (322) fixedly connected to one end of the telescopic rod (313) away from the rotating block (312), and a U-shaped plate (321) fixedly connected to the inner wall of the groove (213), the inner wall of the U-shaped plate (321) being rotatably connected to the outer wall of the cylinder (322). When the sliding baffle (212) is pressed and rotates outward around the round rod (211), the bulge formed inside the grab bucket (121) will slowly move downward and eventually expand the volume inside the grab bucket (121).

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