A material receiving device for a bridge-type grab ship unloader

Abstract

The present invention discloses a material receiving device for a bridge-type grab ship unloader, comprising a base plate, a support frame disposed above the base plate, the support frame including a bearing frame, a hopper fixedly disposed within the bearing frame, and multiple support plates disposed at one end of the bearing frame facing the base plate. Transport openings are provided on any two adjacent support plates, and adjacent to the two transport openings are a first conveyor belt and a second conveyor belt of the same width as the corresponding end faces of the base plate. A material receiving box is disposed on the first conveyor belt, and multiple groups of adsorption electromagnets and a first adjustment control for adsorbing the material receiving box are disposed at the same level on the inner wall of the support plate facing the first conveyor belt. A conveying mechanism is disposed within the base plate for pushing the material receiving box entering from the first conveyor belt into the second conveyor belt, and a second adjustment control is disposed on the base plate for detecting when the material receiving box has detached from the base plate. This invention can reduce the impact on the conveyor belt during material receiving.

Description

Technical Field

[0001] The invention relates to the technical field of grab bucket ship unloaders, in particular to a material receiving device of a bridge type grab bucket ship unloader. Background Art

[0002] At present, traditional bulk cargo unloading technologies at domestic inland river bulk cargo terminals include grab, belt, pneumatic, and screw conveyor types. The grab operation process is as follows: the bulk carrier berths at the terminal, and the terminal uses its own shore crane equipped with a grab bucket to unload the bulk cargo ashore. The grab bucket is operated to the bulk cargo pile, opened, and the cargo is grasped by its own weight or hydraulic mechanism. The grab bucket is then closed, and the crane's lifting, luffing, and slewing mechanisms are operated to place the cargo in the grab bucket onto a bulk truck, which is then transported to the terminal yard for unloading. This completes the continuous operation of bulk cargo unloading from the ship to the yard.

[0003] For example, patent number CN 208843342 U discloses a material receiving device for a bridge-type grab ship unloader, comprising a conveyor belt, a bearing disposed on the top of the conveyor belt, a first fixing plate fixedly connected to the bottom of the front and back sides of the bearing, and a bottom of the first fixing plate fixedly connected to the top of the conveyor belt. The material receiving device for a bridge-type grab ship unloader solves the problem of easy material drop and inconvenience in use of existing material receiving devices by providing a conveyor belt, a bearing, a first fixing plate, a fixing pipe, a transmission box, a first motor, a turntable, a fixing column, a first transmission rod, a first fixing rod, a T-block, a T-slot, a second transmission rod, a third transmission rod, a second fixing rod, a third fixing rod, a fourth fixing rod, a first fixing block, and a second fixing plate. The material receiving device for a bridge-type grab ship unloader has the advantages of being easy to use, making it convenient for users to catch materials from the ship unloader and preventing them from falling.

[0004] However, since the device transmits materials through a conveyor belt when receiving materials, the surface of the conveyor belt will be worn when unloading for a long time, making it impossible to unload materials. At the same time, objects falling from the center of the hopper during unloading will directly impact the conveyor belt, causing the material to splash due to the impact during unloading, and the stability of the material receiving cannot be guaranteed. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0006] To achieve the above-mentioned objectives, the present invention proposes a material receiving device of a bridge-type grab ship unloader, comprising a base plate, a support frame is provided above the base plate, the support frame includes a bearing frame, a hopper is fixedly provided in the bearing frame, and multiple support plates are provided on one end of the bearing frame facing the base plate, and a transportation opening is opened on any two adjacent support plates, and a first conveyor belt and a second conveyor belt with the same width as the corresponding end faces of the base plate are respectively provided near the two transportation openings, a material receiving box is provided on the first conveyor belt, and multiple groups of adsorption electromagnets and a first adjustment control for adsorbing the material receiving box are provided at the same horizontal height on the inner wall of the support plate facing the first conveyor belt, a conveying mechanism for pushing the material receiving box entering from the first conveyor belt into the second conveyor belt is provided in the base plate, and a second adjustment control for detecting whether the material receiving box is separated from the base plate is provided on the base plate, and multiple groups of the electromagnets, the first adjustment control, the second adjustment control and the conveying mechanism are all electrically connected to the same controller.

[0007] The present invention provides a hopper, a bottom plate and a receiving box so that when the grab bucket is unloading, the goods will not have a direct impact on the conveyor belt. Under the action of the adsorption electromagnet, the receiving box will align with the discharge port position of the hopper, so that the impact force of the material finally falling will eventually act on the bottom plate, reducing the splashing caused by the impact of the goods on the conveyor belt, ensuring the stability of the material receiving, and under the action of the adsorption magnet, the first adjustment control, the second adjustment control and the conveying mechanism, it is ensured that after the material receiving box completes the material receiving on the bottom plate, it can smoothly enter the second conveyor belt.

[0008] Optionally, a plurality of groups of adsorption electromagnets are fixedly installed on the inner wall of the support plate at equal distances along the same horizontal height, and the height of the adsorption electromagnets is less than or equal to the height of the side wall of the material receiving box.

[0009] Furthermore, the first adjustment control unit includes an electromagnet seat arranged at the same level as the adsorption electromagnet, and a trigger button is provided on an end surface of the electromagnet seat facing the material receiving box.

[0010] Furthermore, the bottom surface of the base plate is concave to form a transmission cavity, and the transmission mechanism is arranged in the transmission cavity. The transmission mechanism includes a screw arranged along the transmission direction of the second conveyor belt, and the screw is rotatably connected to the side wall of the base plate. The end of the screw away from the second conveyor belt passes through the base plate and is connected to a driving motor. The screw is horizontally and vertically connected to the moving rod by thread. The moving rod has a plurality of shift rods symmetrically arranged on one side facing the base plate, and a corresponding number of moving grooves are provided on the base plate to cooperate with the shift rods, so that the plurality of shift rods can be inserted into the plurality of moving grooves one by one, and the end of the shift rod facing the moving groove is higher than the upper surface of the base.

[0011] Furthermore, the second adjustment control is arranged on the end wall of the movable groove facing the second conveyor belt, so that the second adjustment control can be triggered when the shifting rod reaches the end of the second conveyor belt of the movable groove wiping the oven.

[0012] Furthermore, a plurality of transmission balls are embedded on a side surface of the base plate facing the support frame, and each transmission ball is rotatably connected to the base plate.

[0013] Furthermore, the transmission ball is arranged tangent to the plane where the first conveyor belt surface and the second conveyor belt surface are located, and the first conveyor belt surface and the second conveyor belt surface are in the same plane.

[0014] Furthermore, the height of the material receiving box is smaller than the distance between the top of the transmission ball and the discharge port of the hopper.

[0015] Furthermore, a limiting structure is provided at the top of the hopper, and the limiting structure includes an annular frame provided directly above the hopper and parallel to the hopper feed port, and the annular frame is provided directly opposite the hopper discharge port, and a plurality of support columns are fixedly provided between the annular frame and the side wall of the hopper feed port, and the angle between the support columns and the annular frame locked in the plane is greater than 45°, the diameter of the annular frame is smaller than the diameter of the hopper feed port, and an opening for the grab bucket to enter is provided on the annular frame, and a deceleration rod is provided at the opening that can rebound and rotate.

[0016] Furthermore, a circular chamfer is provided at the edge of the inner wall of the annular frame, the rotation of the deceleration rod is reboundable, and a damping sleeve is connected to the rotation axis of the deceleration rod.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0019] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0020] Figure 2 It is a top view schematic diagram of the present invention;

[0021] Figure 3 It is a full cross-sectional schematic diagram of the present invention;

[0022] Figure 4 It is a side view schematic diagram of the present invention;

[0023] Figure 5 This is a partial enlarged schematic diagram of point A of the present invention;

[0024] Figure 6 This is a bottom-up perspective diagram of the present invention;

[0025] Figure 7 It is a partially enlarged three-dimensional schematic diagram of point B of the present invention.

[0026] Description of reference numerals:

[0027] 1. Hopper; 2. Support frame; 3. Limiting structure; 301. Support column; 302. Ring frame; 303. Speed ​​reduction rod; 4. Bottom plate; 5. Conveyor belt 1; 6. Receiving box; 7. Conveyor belt 2; 8. Transmission ball; 9. Motor; 10. Moving rod; 11. Drag lever; 12. Electromagnet; 13. Electromagnet 2; 14. Trigger button; 15. Trigger button 2; 16. Contact plate. DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0029] The present invention provides a material receiving device for a bridge-type grab ship unloader, comprising a base plate 4, a support frame 2 being arranged above the base plate 4, the support frame 2 comprising a bearing frame, a hopper 1 being fixedly arranged in the bearing frame, a multi-sided support plate being arranged on one end of the bearing frame facing the base plate 4, a transport opening being opened on any two adjacent support plates, a first conveyor belt and a second conveyor belt having the same width as the corresponding end faces of the base plate 4 being arranged adjacent to the two transport openings, a material receiving box 6 being arranged on the first conveyor belt, a plurality of groups of adsorption electromagnets 12 and a first adjustment control unit for adsorbing the material receiving box 6 being arranged at the same horizontal height on the inner wall of the support plate facing the first conveyor belt, a conveying mechanism for pushing the material receiving box 6 entering from the first conveyor belt into the second conveyor belt is arranged in the base plate 4, and a second adjustment control unit for detecting that the material receiving box 6 is separated from the base plate 4 is arranged on the base plate 4, the plurality of groups of electromagnets 12, the first adjustment control unit, the second adjustment control unit and the conveying mechanism are all electrically connected to the same controller.

[0030] The present invention provides a hopper 1, a bottom plate 4 and a receiving box 6 so that when the grab bucket is unloading, the goods will not have a direct impact on the conveyor belt. Under the action of the adsorption electromagnet 12, the receiving box 6 will be aligned with the discharge port position of the hopper 1, so that the impact force of the material finally falling will eventually act on the bottom plate 4, reducing the impact of the goods on the conveyor belt. Under the action of the adsorption magnet, the first adjustment control, the second adjustment control and the conveying mechanism, it is ensured that after the receiving box 6 completes the material reception on the bottom plate 4, it can smoothly enter the second conveyor belt.

[0031] Multiple groups of adsorption electromagnets 12 are fixedly mounted on the inner wall of the support plate at equal intervals along the same horizontal height, with the height of the adsorption electromagnets 12 being less than or equal to the height of the side wall of the receiving box 6. The first adjustment control unit includes an electromagnet 12 seat arranged at the same level as the adsorption electromagnets 12. A trigger button 14 is provided on the end surface of the electromagnet 12 seat facing the receiving box 6. An iron contact plate 16 is provided on the side wall of the receiving box 6 facing the group of electromagnets 12, which is used to cooperate with the adsorption electromagnets 12 to attract the receiving box 6. Before unloading, the first conveyor belt drives the receiving box 6 to move into the support frame 2. Since the bottom plate 4 cannot provide the receiving box 6 with the power to move, the contact area between the first conveyor belt and the receiving box 6 gradually decreases as the first conveyor belt feeds during feeding, thereby reducing its conveying efficiency. Therefore, an adsorption electromagnet 12 is provided at the corresponding position of the contact plate 16 on the inner wall of the support frame 2 and the side of the receiving box 6. As the distance shortens, the adsorption force of the electromagnet 12 becomes stronger and stronger, and finally drives the receiving box 6 into the interior of the support frame 2, so that the receiving box 6 is facing the bottom of the hopper 1.

[0032] After the adsorption electromagnet 12 adsorbs the receiving box 6 to the top of the bottom plate 4, it is necessary to determine whether the receiving box 6 has entered the receiving position, so the judgment of the first adjustment control unit is required. The first adjustment control unit includes an electromagnet 12 seat arranged at the same level as the adsorption electromagnet 12, and a trigger button 14 is provided on one end surface of the electromagnet 12 seat facing the receiving box 6. The electromagnet 12 seat and the adsorption electromagnet 12 are electromagnets 12 of the same specifications, and the trigger button 14 provided on the top of the electromagnet 12 seat will be triggered when the receiving box 6 is completely adsorbed on the adsorption electromagnet 12 and the electromagnet 12 seat, so that the controller can obtain the information that the receiving box 6 is in place. In some embodiments, the controller is electrically connected to the grab bucket, which can feedback the information to the grab bucket so that the grab bucket can perform unloading operations. In other embodiments, the controller is electrically connected to a display terminal, which can feedback the information that the receiving box 6 is in place, so that the staff can confirm the position of the receiving box 6. If it is confirmed that it is in place, the grab bucket can be controlled to perform unloading operations. And when the trigger button 14 of the first adjustment control unit is triggered, the controller will control the first conveyor belt to stop transporting and the second conveyor belt to start. After unloading is completed, the staff can use the controller to disconnect the adsorption electromagnet 12 and the adsorption action of the electromagnet 12 seat to the docking material box 6, and control the action of the conveying mechanism to transfer the receiving box 6 to the second conveyor belt.

[0033] The conveying mechanism needs to push the receiving box 6 on the bottom plate 4, so that the receiving box 6 is transported from the bottom plate 4 to the second conveyor belt, and because the bottom plate 4 is in contact with the ground, sufficient installation space needs to be provided for the conveying mechanism, so a transmission cavity is formed in the bottom surface of the bottom plate 4, and the conveying mechanism is arranged in the transmission cavity. The conveying mechanism includes a screw arranged along the conveying direction of the second conveyor belt, the screw is rotatably connected to the side wall of the bottom plate 4, and the screw passes through the bottom plate 4 away from the second conveyor belt 5 and is connected to the driving motor 9. The screw is horizontally and vertically threaded with a moving rod 10, and a plurality of shift rods 11 are symmetrically arranged on one side of the moving rod 10 facing the bottom plate 4. A corresponding number of moving grooves are provided on the bottom plate 4 to cooperate with the shift rod 11, so that the multiple shift rods 11 can be inserted into the multiple moving grooves one by one, and the shift rod 11 is arranged higher than the upper surface of the base towards one end of the moving groove. When the material receiving is completed, the controller controls the conveying mechanism to operate, the drive motor 9 works, and the output end of the drive motor 9 drives the screw to rotate, thereby driving the moving rod 10 to move, and the shift rod 11 moves in the moving groove with the moving rod 10, and the part of the shift rod 11 that is higher than the upper surface of the bottom plate 4 pushes the end of the material receiving box 6 away from the second conveyor belt, so that the material receiving box 6 moves toward the second conveyor belt.

[0034] In order to automatically reset the toggle lever, a second adjustment control is provided on the bottom plate 4. The second adjustment control is provided on the end wall of the movable groove facing the second conveyor belt 5. This second adjustment control is triggered when the toggle lever 11 reaches the end of the movable groove rubbing the second conveyor belt 5 of the drying oven. In this embodiment, the second adjustment control is configured as a travel switch. When the toggle lever 11 pushes the movable box to the end of the movable groove facing the second conveyor belt 5, the toggle lever 11 triggers the second adjustment control, which sends a reset signal to the controller. The controller controls the motor 9 to rotate in the reverse direction, thereby causing the lead screw to drive the movable rod 10 and the toggle lever 11 to reset. The forward rotation time and speed of the motor 9, as well as the reverse rotation time and speed, are pre-set to prevent the movable rod 10 from over-moving and causing the toggle lever 11 to collide with the end wall of the movable groove and break.

[0035] In some embodiments, when the second adjustment control sends a reset signal of the lever 11 to the controller, the controller controls the movement of the first conveyor belt while sending an action signal to the motor 9 to control the reset of the lever 11. At this time, the controller controls the motor 9 to operate at a speed corresponding to the predetermined recovery speed of the lever 11, so that the lever 11 is reset before the next material receiving box 6 enters the bottom plate 4 and contacts the nearest lever 11, thereby avoiding a collision between the lever 11 and the next material receiving box 6 entering the bottom plate 4.

[0036] When the second adjusting control unit sends a reset signal of the lever 11 to the controller, the controller sends an action signal to the motor 9 to control the reset of the lever 11 while controlling the movement of the first conveyor belt to transport the next material receiving box 6 to the top of the bottom plate 4. In order to avoid the material receiving box 6 from colliding with the lever 11 during the reset process, the connection between the lever 11 and the moving rod 10 is set to be a rebound rotation connection, and a rotation limit mechanism is provided at the rotation connection position to limit the rotation angle of the lever 11 to ensure that the lever 11 can maintain an action position perpendicular to the surface of the bottom plate 4 when pushing the material receiving box 6, so that when the lever 11 is reset, when it contacts the material receiving box 6, the lever 11 can rotate toward the second conveyor belt, and when the lever 11 reaches the initial position, it can rebound to a position protruding from the upper surface of the bottom plate 4, thereby facilitating the transportation of the next material receiving box 6, thereby avoiding the collision between the lever 11 and the next material receiving box 6 entering the bottom plate 4.

[0037] Through the coordinated control of the first adjustment control unit, the second adjustment control unit, the first conveyor belt, the second conveyor belt, the motor 9, and the controller, multiple material receiving boxes 6 can complete seamless material receiving operations, thereby realizing automatic material receiving and transportation of the material receiving box 6, and through the action of the adsorption electromagnet 12 and the electromagnet 12 seat of the first adjustment control unit, the material receiving box 6 is stably fixed by the adsorption electromagnet 12 during the material receiving process, ensuring that no material spillage occurs during the material receiving process.

[0038] At the same time, considering the movement of the receiving box 6 on the base plate 4, in order to reduce the friction between the base plate 4 and the receiving box 6, a plurality of transmission balls 8 are embedded on the side of the base plate 4 facing the support frame 2, and each transmission ball 8 is rotatably connected to the base plate 4. The transmission balls 8 are tangent to the plane where the first conveyor belt surface and the second conveyor belt surface are located, and the first conveyor belt surface and the second conveyor belt surface are in the same plane. The height of the receiving box 6 is less than the distance between the top of the transmission ball 8 and the discharge port of the hopper 1, so as to prevent the receiving box 6 from being unable to enter between the transmission ball 8 and the hopper 1. And when receiving the material, the receiving box 6 is at the top of multiple groups of transmission balls 8. Since the receiving box 6 is subjected to a downward force, the deflection direction of the multiple groups of transmission balls all points to the center of the base plate 4, ensuring the stability of the receiving box 6 during the material receiving process.

[0039] Furthermore, to ensure the stability of the grab bucket during unloading, a limiting structure 3 is provided at the top of the hopper 1. The limiting structure 3 includes an annular frame 302 provided directly above the hopper 1 and parallel to the feed port of the hopper 1. The annular frame 302 is provided directly opposite the discharge port of the hopper 1. A plurality of support columns 301 are fixedly provided between the annular frame 302 and the side wall of the feed port of the hopper 1. The angle between the support columns 301 and the annular frame 302 is greater than 45°. The diameter of the annular frame 302 is smaller than the diameter of the feed port of the hopper 1. The annular frame 302 is provided with an opening for the grab bucket to enter, and a deceleration rod 303 is provided at the opening for rebound rotation. In addition, there is a circular chamfer at the inner wall edge of the annular frame 302. The rotation of the deceleration rod 303 is rebound-type, and a damping sleeve is connected to the rotation axis of the deceleration rod 303. Because the load is added inside the grab bucket, its inertia increases, so when unloading, it will shake due to inertia, resulting in the material not being able to completely enter the hopper 1. Therefore, when the supporting rope moves above the hopper 1, the supporting rope will come into contact with the deceleration rod 303 at the opening of the ring frame 302, thereby pushing the deceleration rod 303 to rotate to Figure 1 The deflection angle on the deceleration rod 303 is due to the presence of a damping sleeve inside the deceleration rod 303, and the rebound of the deceleration rod 303, so that the component force on the supporting rope is partially absorbed, thereby reducing the influence of the movement inertia on the discharge. At the same time, in order to prevent the supporting rope from being subjected to the shear force of the annular frame 302, the edge of the annular frame 302 is rounded to effectively extend its service life. Combined with the shear-resistant support column 301, the stability of the unloading can be well guaranteed.

[0040] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A material receiving device for a bridge grab ship unloader, characterized in that: The lifting mechanism comprises a lifting mechanism, a lifting mechanism, a lifting mechanism being a lifting mechanism, a lifting mechanism being a lifting mechanism, a lifting mechanism being a lifting mechanism of the lifting mechanism, a lifting mechanism being a lifting mechanism of the lifting mechanism, a lifting mechanism being a lifting mechanism of the lifting mechanism, a lifting mechanism being a lifting mechanism of the lifting mechanism, a lifting mechanism being a lifting mechanism of the lifting mechanism Multiple groups of adsorption electromagnets are fixedly installed on the inner wall of the support plate at the same horizontal height and at equal distances, and the height of the adsorption electromagnets is less than or equal to the height of the side wall of the material receiving box. An iron contact plate is provided on one side wall of the material receiving box facing the adsorption electromagnet group; The first adjustment control unit includes an electromagnet seat arranged at the same level as the adsorption electromagnet, and a trigger button is provided on one end surface of the electromagnet seat facing the material receiving box; A limiting structure is provided at the top of the hopper, and the limiting structure includes an annular frame provided directly above the hopper and parallel to the hopper feed port, and the annular frame is provided directly opposite the hopper discharge port, and a plurality of support columns are fixedly provided between the annular frame and the side wall of the hopper feed port, the angle between the support columns and the plane where the annular frame is located is greater than 45°, the diameter of the annular frame is smaller than the diameter of the hopper feed port, and an opening for the entry of the grab bucket is provided on the annular frame, and a deceleration rod is provided at the opening for rebound rotation.

2. The material receiving device of a bridge-type grab ship unloader according to claim 1, characterized in that: The bottom surface of the base plate is concave to form a transmission cavity, and the transmission mechanism is arranged in the transmission cavity. The transmission mechanism includes a screw arranged along the transmission direction of the second conveyor belt, the screw is rotatably connected to the side wall of the base plate, and the screw passes through the base plate at one end away from the second conveyor belt and is connected to a driving motor. The screw is horizontally and vertically connected to a moving rod with a threaded connection to the screw, and a plurality of shift rods are symmetrically arranged on the side surface of the moving rod facing the base plate, and a corresponding number of moving grooves are provided on the base plate to cooperate with the shift rods, so that the plurality of shift rods can be inserted into the plurality of moving grooves one by one, and the end of the shift rod facing the moving groove is higher than the upper surface of the base plate.

3. The material receiving device of a bridge-type grab ship unloader according to claim 2, characterized in that: The second adjustment control is arranged on the end wall of the movable slot facing the second conveyor belt, so that the second adjustment control can be triggered when the shifting rod reaches the end of the movable slot facing the second conveyor belt.

4. The material receiving device of a bridge-type grab ship unloader according to claim 1, characterized in that: A plurality of transmission balls are embedded on one side of the bottom plate facing the support frame, and each transmission ball is rotatably connected to the bottom plate.

5. The material receiving device of a bridge-type grab ship unloader according to claim 4, characterized in that: The transmission ball is arranged tangent to the plane where the first conveyor belt surface and the second conveyor belt surface are located, and the first conveyor belt surface and the second conveyor belt surface are in the same plane.

6. The material receiving device of a bridge-type grab ship unloader according to claim 5, characterized in that: The height of the material receiving box is smaller than the distance between the top of the transmission ball and the discharge port of the hopper.

7. The material receiving device of a bridge type grab ship unloader according to claim 6, characterized in that: There is a circular chamfer at the edge of the inner wall of the annular frame. The rotation of the deceleration rod is reboundable, and a damping sleeve is connected to the rotation axis of the deceleration rod.

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