Chain type continuous ship unloader for finished goods

Abstract

According to the chain type continuous ship unloader for the piece goods, chain type conveying, belt type conveying and roller conveying are connected into a conveying line through a transshipping device, continuous ship unloading operation of box-packaged or bag-packaged goods can be achieved, a movable arm structure is adopted, the space occupied by the ship unloader on the shore can be reduced, and the ship unloader is convenient to use. According to the ship unloader, the operation efficiency of the ship unloader can be improved through double-side conveying, it can be guaranteed that goods move horizontally all the time in the whole conveying process of the goods, the ship unloader has good adaptability to the goods with the requirement that the goods cannot be reversed, and compared with an existing box packaging or bag packaging ship unloading mode, automatic control is conveniently achieved through the ship unloader provided by the invention.

Description

Technical Field

[0001] The invention relates to the technical field of port ship unloading equipment, in particular to a chain-type continuous ship unloader for piece goods. Background Art

[0002] With the intelligent and smart development of port construction, the unloading equipment of various types of cargo is constantly improving in the direction of intelligence. Ships, as the main transportation medium of water transportation, mainly involve two key processes: loading and unloading and transportation of cargo. In this process, ship unloaders play an important role and can efficiently and conveniently realize the transportation of cargo between ships and shores. At present, the loading and unloading equipment for bulk materials and containers has gradually matured. However, when handling boxed and bagged goods, the domestic market still generally relies on manual stacking of goods on pallets, and then uses lifting equipment to lift the pallets from the cabin and deliver them to the ground. This traditional unloading method has problems such as low loading and unloading efficiency and insufficient automation level, and cannot meet the needs of modern ports. With the continuous construction and development of smart ports, this inefficient way of unloading will be replaced by more advanced equipment. Therefore, unloading equipment for containerized cargo and bagged cargo urgently needs further research and innovation to improve the overall loading and unloading efficiency and automation level. This will not only improve the operating efficiency of the port, but also help reduce labor costs and improve safety. Future unloading equipment should develop in the direction of intelligence, automation and efficiency to adapt to the ever-changing market demands and technological advances. Summary of the invention

[0003] The object of the present invention is to provide a chain-type continuous unloader for piece goods, which can provide stable cargo transfer under automatic control, ensure that the cargo always moves horizontally during the unloading process, and has good adaptability to cargo that cannot be reversed.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solutions: a chain-type continuous unloader for piece goods, comprising an unloading platform, a loading platform, a traveling device, a column installed on the traveling device, a vertical conveyor installed on the column, a balancing arm, and a moving arm moving device, wherein the loading platform is installed at the bottom of the moving arm moving device for loading goods, and the unloading platform is installed on the traveling device for conveying goods to the ground. The movable arm moving device comprises an L-shaped arm frame, a movable arm, and an inclined tie rod. The vertical section of the L-shaped arm frame is equipped with a movable lifting hydraulic cylinder. The movable arm is slidably matched with the vertical section of the L-shaped arm frame. The cylinder rod of the movable lifting hydraulic cylinder is fixedly connected to the movable arm. The end of the horizontal section of the L-shaped arm frame is hinged to the upper part of the column. The two ends of the inclined tie rod are respectively hinged to the horizontal section and the vertical section of the L-shaped arm frame, so as to increase the rigidity of the L-shaped arm frame. A horizontal conveyor is installed on the horizontal section of the L-shaped arm, a second transfer device is installed at the end of the horizontal section, and a first transfer device is installed at the front end. A vertical hoist is installed on the movable arm of the L-shaped arm. The horizontal conveyor includes a horizontal conveyor mounting platform and a belt conveyor installed thereon. The vertical hoist is used to lift the goods to the first transfer device, the first transfer device is used to transfer the goods from the vertical hoist to the horizontal conveyor, the horizontal conveyor is used to transport the goods to the column, and the second transfer device is used to transfer the goods from the horizontal conveyor to the vertical conveyor.

[0005] Preferably, the vertical hoist and vertical conveyor have the same structure, including a driving sprocket, a driving device, and three redirecting sprockets. The input end of the driving sprocket is connected to the output end of the driving device. The driving sprocket and the three redirecting sprockets are distributed in a rectangular array on the installed component and are surrounded by a chain. Guide trolleys are equidistantly distributed on the chain links of the chain. A cargo frame is hinged on the guide trolley. The bottom surface of the cargo frame is a comb-tooth structure. It also includes a guide rail for the guide trolley, which is installed on the component where the vertical hoist or vertical conveyor is installed. The guide rail for the guide trolley is erected on the outside of the chain.

[0006] Preferably, the loading platform includes a loading platform frame, which is arranged at the lower part of the vertical lift. The loading platform frame is connected to a loading platform roller conveyor, and a plurality of rollers are evenly distributed on the loading platform roller conveyor. The rollers at the right end form a comb tooth structure, which are arranged in an alternating manner with the comb teeth of the cargo frame and are used to lift the cargo on the loading platform roller conveyor when the cargo frame moves. The right end of the loading platform roller conveyor is connected to a front end baffle of the loading platform.

[0007] Preferably, the ground unloading platform includes an unloading platform roller conveyor, which is installed on the walking device. A number of rollers are evenly distributed on the unloading platform roller conveyor, forming a comb tooth structure with the rollers at the corresponding ends of the cargo frame, and are arranged in an alternating manner with the comb teeth of the cargo frame. When the cargo frame moves, the goods are left on the unloading platform roller conveyor and transported to the ground.

[0008] Preferably, the first transfer device includes a first transfer device installation platform, which is connected to the front end of the horizontal section of the L-shaped arm frame, and a plurality of first transfer device cargo frames driven by a sprocket device are arranged on the first transfer device installation platform, and the sprocket devices are arranged in pairs on both sides of the first transfer device cargo frame for driving the transfer device cargo frame, including a driving sprocket and a driven sprocket, and the driving sprocket and the driven sprocket are connected by a chain. The bottom surface of the first transfer device cargo frame is a comb-tooth structure, and the first transfer device cargo frame is slidably matched on the first transfer device cargo frame guide rail installed on the first transfer device installation platform, so as to guide the first transfer device cargo frame to move horizontally. A first transfer device roller conveyor is also provided in the middle of the first transfer device, and the first transfer device roller conveyor has a plurality of rollers equidistantly distributed, and the rollers at the corresponding ends of the cargo frame form a comb-tooth structure, which is staggered with the comb-tooth structure of the first transfer device cargo frame, so that when the first transfer device cargo frame moves from top to bottom, the goods fall onto the first transfer device roller conveyor.

[0009] Preferably, movable guide wheels are provided on the vertical sections of the movable arm and the L-shaped arm frame.

[0010] Preferably, the first transfer device installation platform is vertically arranged with at least two gear groups set at different heights near the vertical hoist to avoid meshing vacuum sections, each gear group includes two gears, and the symmetry plane of each gear group coincides with the symmetry plane of the driving sprocket of the corresponding sprocket device, and the two sides of the vertical hoist cargo frame are respectively connected with racks set with corresponding gears, and the racks and gears are meshed with each other. The gears are coaxially connected with motion transmission sprockets, and the coaxially connected transmission sprockets of gears at different heights are not coplanar, and the driving sprocket of the sprocket device of the first transfer device is coaxially connected with multiple motion transmission sprockets, and closed-loop roller chains are wound around the motion transmission sprockets and the motion transmission sprockets coplanar therewith.

[0011] Preferably, the cargo frame of the transfer device includes a right-angle guide frame and a mounting bearing seat. The two ends of the cargo frame are fixedly connected to the right-angle guide frame, and guide wheels are arranged at both ends of the right-angle guide frame. The mounting bearing seats are installed on both sides of the cargo frame and are fixedly connected to the sprocket chain. The guide rails of the cargo frame of the transfer device include an elliptical guide rail and two arc-shaped auxiliary guide rails. The elliptical guide rail and the arc-shaped auxiliary guide rail are keyway-shaped. The two arc-shaped auxiliary guide rails are respectively located on the upper side of the inside of the elliptical guide rail and the lower side of the outside of the elliptical guide rail. The two arc-shaped auxiliary guide rails fall on an elliptical track eccentric to the elliptical guide rail. The elliptical track is the same size as the elliptical guide rail. The two guide wheels of the right-angle guide frame respectively cooperate with the elliptical guide rail and the arc-shaped auxiliary guide rail to realize the translation of the cargo frame of the transfer device at the upper and lower ends. The entrance ends of the two arc-shaped guide rails are provided with trumpet guide ports, and the top and bottom of the elliptical guide rail correspond to the position of the rear half of the arc-shaped guide rail. A notch is arranged on the upper part of the track to prevent motion interference.

[0012] Preferably, the second transfer device includes a second transfer device roller conveyor, which is installed on the horizontal conveyor installation platform, one end of the second transfer device roller conveyor is adjacent to the belt conveyor, and the other end extends to the vertical hoist. The second transfer device roller conveyor is installed with a second transfer device front end stopper located at the end extending to one end of the vertical hoist. The second transfer device is also equipped with a first cylinder, a second cylinder, a second sensor, a first sensor, and a third sensor. The first cylinder and the second cylinder are arranged below the second transfer device roller conveyor and are staggered with the rollers to block the movement of goods. The second sensor is arranged on the connecting frame on the second transfer device roller conveyor, the first sensor is arranged below the second transfer device roller conveyor, the third sensor is arranged between the first cylinder and the second cylinder, and is located between the rollers. The first cylinder, the second cylinder, and the first sensor are staggered at the intersection of the second transfer device roller conveyor and the vertical conveyor to ensure that there is no interference with the container. The first cylinder and the second cylinder are also provided with signal receivers for receiving signals from the sensors and extending or retracting the piston rods.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention connects chain conveyor, belt conveyor and roller conveyor into a conveyor line through a transfer device, so as to realize the continuous unloading operation of box-packed or bag-packed goods.

[0014] The present invention adopts a movable arm structure, which can reduce the space occupied by the ship unloader on the shore.

[0015] The present invention adopts double-sided conveying to improve the operating efficiency of the ship unloader.

[0016] The present invention can ensure that the goods always move horizontally during the entire conveying process of the goods, and has good adaptability to the goods that are required not to be inverted.

[0017] A chain-type continuous unloader for piece goods comprises the following steps: 1) When unloading, the equipment is driven toward the unloading hatch by the traveling device, the hydraulic cylinder of the moving arm moving device is controlled to move the moving arm, the loading platform is adjusted to the unloading hatch, and the goods are manually placed on the roller conveyor of the loading platform. The goods are driven forward by the conveyor, and when the goods reach the stop bar at the front end of the loading platform, the goods stop moving; 2) The driving device of the vertical hoist drives the sprocket and the redirecting sprocket to rotate by the chain linkage, and the guide trolley connected to the chain drives the cargo frame on it to move. When the cargo frame intersects with the roller conveyor of the loading platform, the comb teeth and rollers of the cargo frame are arranged in a staggered manner, so that the cargo frame passes through the roller conveyor of the loading platform and lifts the cargo on it. The cargo is lifted by the vertical hoist and then sent to the first transfer device; 3) The rack on the cargo frame of the vertical elevator meshes with the gear set on the first transfer device, driving the cargo frame of the first transfer device to move upward at a faster speed than the cargo frame of the vertical elevator. The goods are lifted from the cargo frame of the vertical elevator and moved above the roller conveyor of the first transfer device. When the cargo frame descends, the goods are placed on the roller conveyor of the first transfer device, and then transported by the conveyor to the belt conveyor of the horizontal conveyor; 4) Driven by the belt conveyor, the goods are sent to the roller conveyor of the second transfer device. When the first sensor detects that the vertical conveyor cargo frame has arrived at this position and there is no cargo above the third sensor, the cylinder extension rod extends to block the subsequent goods; when the second sensor and the first sensor both detect that there is no vertical conveyor cargo frame, the extension rods of the first cylinder and the second cylinder retract, and the goods continue to move forward with the roller conveyor of the second transfer device until they are blocked by the blocking rod in front; then the vertical conveyor drive device drives the drive sprocket and the redirecting sprocket to rotate, driving the chain around it to rotate cyclically, and the cargo frame guides the trolley to lift the cargo frame from the roller conveyor of the second transfer device; 5) The goods are lifted by the vertical conveyor and then sent to the unloading platform. When the vertical conveyor cargo frame runs from the top to the bottom of the unloading platform roller conveyor, the goods fall on the conveyor and are then transported away from the unloading area and taken away by workers.

[0018] 6) After unloading one layer of cargo, or when the height of the loading platform needs to be adjusted due to tidal changes, start the hydraulic system to control the hydraulic cylinder of the mobile arm moving device to extend or retract to achieve height adjustment. In this way, the equipment can operate continuously to complete unloading; after the unloading operation is completed, start the mobile arm moving device to raise the mobile arm to a safe height, and then start the walking device to transport the equipment to the next hatch or leave the port.

[0019] Compared with the existing box packaging or bag packaging unloading methods, the unloading equipment provided by the present invention is convenient for realizing automatic control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the box packaging or bag packaging continuous ship unloading equipment of the present invention.

[0021] Figure 2 It is a structural diagram of the L-shaped arm frame of the present invention.

[0022] Figure 3It is a structural schematic diagram of the movable arm of the present invention.

[0023] Figure 4 It is a structural schematic diagram of the movable arm moving device of the present invention.

[0024] Figure 5 It is a schematic diagram of the loading platform structure and layout of the present invention.

[0025] Figure 6 It is a schematic diagram of the cargo frame structure of the vertical hoist of the present invention.

[0026] Figure 7 It is a schematic diagram of the structure and layout of the first transfer device of the present invention.

[0027] Figure 8 It is a schematic diagram of the motion transmission circuit structure and layout of the first transfer device of the present invention.

[0028] Fig. 9 It is a schematic diagram of the cargo frame structure of the first transfer device of the present invention.

[0029] Fig.10 It is a schematic diagram of the structure and layout of the second transfer device of the present invention.

[0030] Fig.11 It is a schematic diagram of the guide rail structure of the cargo frame of the transfer device of the present invention.

[0031] Fig.12 It is a schematic diagram of the mutual coordination structure and arrangement of the cargo frame and guide rails of the cargo frame of the transfer device of the present invention.

[0032] Fig.13 It is a schematic diagram of the arrangement of sensors and cylinders of the second transfer device of the present invention.

[0033] Fig.14 It is a schematic diagram of the structure and layout of the unloading platform of the present invention.

[0034] In the figure: 1, walking device; 2, unloading platform; 3, vertical conveyor; 3-1, vertical conveyor driving sprocket; 3-2, vertical conveyor driving device; 3-3, vertical conveyor redirecting sprocket; 3-4, vertical conveyor cargo frame; 3-5, vertical conveyor cargo frame guide rail; 3-6, vertical conveyor conveyor chain; 4, balance arm; 5, column; 6, second transfer device; 6-1, second transfer device roller conveyor; 6-2, second transfer platform front end stop bar; 6-3, second sensor; 6-4, first cylinder; 6-5, second cylinder; 6-6, third sensor sensor; 6-7, first sensor; 7, horizontal conveyor; 7-1, horizontal conveyor installation platform; 7-2, belt conveyor; 7-3, railing; 8, first transfer device; 8-1, first transfer device roller conveyor; 8-2, first transfer device installation platform; 8-3, first transfer device cargo frame guide rail; 8-4, first transfer device cargo frame; 8-4-1, guide wheel; 8-4-2, bearing seat; 8-5, rack 1; 8-6, gear 1; 8-7, upper end motion transmission sprocket 2 (cooperating with 8-12 to form a chain drive); 8-8, gear 2; 8 -9, lower end motion transmission sprocket 2 (cooperates with 8-11 to form chain drive); 8-10, transfer left driven sprocket; 8-11, motion transmission sprocket 1 (outer side); 8-12, motion transmission sprocket 1 (inner side); 8-13, transfer left drive sprocket; 9, vertical hoist; 9-1, vertical hoist drive sprocket; 9-2, vertical hoist drive device; 9-3, vertical hoist driven sprocket; 9-4, vertical hoist chain; 9-5, vertical hoist guide trolley; 9-5-1, vertical hoist guide trolley wheel; 9-5-2, vertical hoist Guide trolley frame; 9-6, guide rails for guide trolley of vertical hoist; 9-7, cargo frame of vertical hoist; 10, loading platform; 10-1, loading platform frame; 10-2, roller conveyor of loading platform; 10-3, front end stopper of loading platform; 11, moving device of mobile arm; 11-1, moving arm; 11-2, L-shaped arm frame; 11-3, inclined rod; 11-4, mobile guide wheel set; 11-5-1, cylinder barrel of mobile lifting hydraulic cylinder; 11-5-2, cylinder rod of mobile lifting hydraulic cylinder; 11-5-3, oil inlet and outlet of mobile lifting hydraulic cylinder; 13, cargo. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0036] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figure 1-14 , an embodiment provided by the present invention: a chain-type continuous unloader for piece goods, comprising an unloading platform 2, a loading platform 10, a walking device 1, the walking device 1 provides a basis for the movement of the equipment, and is convenient for flexible scheduling in the port, a column 5 installed on the walking device 1, the column 5 supports the entire structure to ensure stability, and can be adjusted in height, a vertical conveyor 3 installed on the column 5, the vertical conveyor 3 transports the goods 13 to the unloading platform 2, a balance arm 4, the balance arm 4 is used to maintain structural balance, ensure stability during operation, and prevent the equipment from tilting or unbalancing during loading and unloading, a moving arm moving device 11, the loading platform 10 is installed at the bottom of the moving arm moving device 11, the loading platform 10 loads the goods 13, and then cooperates with the vertical hoist 9 to lift and transport the goods 13 on the ship for loading the goods 13, the unloading platform 2 is installed on the walking device 1, the unloading platform 2 is used to receive the goods unloaded by the vertical conveyor 3, receive the goods 13 transported by the unloading operation, provide a stable unloading environment, and perform overall continuous automation work, and is used to transport the goods 13 to the ground, The movable arm moving device 11 comprises an L-shaped arm frame 11-2, a movable arm 11-1, and an inclined rod 11-3. A movable lifting hydraulic cylinder is installed on the vertical section of the L-shaped arm frame 11-2. The movable lifting hydraulic cylinder rod 11-5-2 is fixed on the movable arm 11-1. The movable lifting hydraulic cylinder cylinder barrel 11-5-1 is fixed on the L-shaped arm frame 11-2. Under the push of the movable lifting hydraulic cylinder, the movable arm 11-1 can move up and down in the vertical section of the L-shaped arm frame 11-2. When oil is supplied to the upper end of the movable lifting hydraulic cylinder, the hydraulic cylinder rod extends to drive the movable arm 11-1 to move downward. When the movable arm 11-1 lifts the lower end of the hydraulic cylinder, the movable arm 11-1 is lifted. When oil is supplied, the hydraulic cylinder rod retracts, driving the movable arm 11-1 to move upward, and the movable arm 11-1 slides and cooperates with the vertical section of the L-shaped arm frame 11-2. The movable lifting hydraulic cylinder rod 11-5-2 is fixedly connected to the movable arm 11-1, and the end of the horizontal section of the L-shaped arm frame 11-2 is hinged to the upper part of the column 5. The two ends of the inclined rod 11-3 are respectively hinged to the horizontal section and the vertical section of the L-shaped arm frame 11-2, which are used to increase the rigidity of the L-shaped arm frame 11-2; the inclined rod 11-3 increases the rigidity of the L-shaped arm frame 11-2 to prevent the L-shaped arm frame 11-2 from bending or instability during use, thereby ensuring the strength and stability of the system. A horizontal conveyor 7 is installed on the horizontal section of the L-shaped arm 11-2. The horizontal conveyor 7 is used to transport the goods 13 in the horizontal direction. In the design, the horizontal conveyor 7 transmits the goods 13 through the belt conveyor 7-2, and then cooperates with the vertical conveyor 3 to transfer the goods 13, thereby transferring the goods on the ship to one end of the ground. A second transfer device 6 is installed at the end of the horizontal section, and a first transfer device 8 is installed at the front end. The first transfer device 8 transfers the goods 13 extracted from the vertical hoist 9 to the horizontal conveyor 7, which is mainly responsible for the horizontal transfer of the goods 13. The mobile arm 11-1 of the L-shaped arm 11-2 A vertical hoist 9 is installed, and the horizontal conveyor 7 includes a horizontal conveyor installation platform 7-1 and a belt conveyor 7-2 installed thereon. The vertical hoist 9 is used to lift the cargo 13 to the first transfer device 8. The first transfer device 8 is used to transfer the cargo 13 from the vertical hoist 9 to the horizontal conveyor 7. The horizontal conveyor 7 is used to transport the cargo 13 to the column 5. The second transfer device 6 is used to transfer the cargo 13 from the horizontal conveyor 7 to the vertical conveyor 3. The second transfer device 6 transfers the cargo 13 from the horizontal conveyor 7 to the vertical conveyor 3 again, so that the cargo 13 on the ship can be transferred to one end of the ground. The vertical sections of the movable arm 11-1 and the L-shaped arm frame 11-2 are provided with movable guide wheels, which are used to move smoothly along the track or guide rail to ensure stability and accuracy in the vertical direction. The vertical hoist 9 and the vertical conveyor 3 have the same structure. The difference between the vertical conveyor cargo frame 3-4 and the vertical hoist cargo frame 9-7 is only whether there is a rack or not. It includes a driving sprocket, a driving device, and three redirecting sprockets. The input end of the driving sprocket is connected to the output end of the driving device. The driving sprocket and the three redirecting sprockets are distributed in a rectangular array on the installed components and are surrounded by a chain. Guide trolleys are equidistantly distributed on the chain links of the chain. The guide trolley is hinged with a cargo frame. The bottom surface of the cargo frame is a comb-tooth structure and also includes a guide rail for the guide trolley, which is installed on the installed component of the vertical hoist 9 or the vertical conveyor 3. The guide rail for the guide trolley is erected on the outside of the chain. The vertical hoist 9 includes a vertical hoist drive sprocket 9-1, a vertical hoist drive device 9-2, a vertical hoist redirecting sprocket, a vertical hoist chain 9-4, and the vertical hoist drive sprocket 9-1 is connected to the upper left corner of the moving arm 11-1. The input end of the vertical hoist drive sprocket 9-1 is connected to the output end of the vertical hoist drive device 9-2. The vertical hoist drive device 9-2 drives the vertical hoist drive sprocket 9-1 to rotate, thereby driving the vertical hoist conveying chain 9-4 wound around the vertical hoist drive sprocket 9-1 and the vertical hoist driven sprocket 9-3 to rotate in a circular manner. The vertical hoist drive sprocket 9-1 provides power, and the power is transmitted through the drive chain, so that the vertical hoist cargo frame 9-7 on the vertical hoist guide trolley 9-5 moves along the vertical hoist guide trolley guide rail 9-6. The vertical hoist drive device 9-2 provides a power source for the vertical hoist drive sprocket 9-1 to ensure that the system can operate effectively. The vertical hoist driving device 9-2 is connected to the moving arm 11-1. The vertical hoist redirecting sprockets are respectively arranged at the upper right, lower left and lower right corners of the moving arm 11-1. The vertical hoist redirecting sprocket is used to change the movement direction of the chain so that the chain can form a closed loop, so that the vertical hoist guide trolley 9-5 can reciprocate and transport the goods 13. The vertical hoist chain 9-4 bypasses the vertical hoist driving sprocket 9-1 and the vertical hoist redirecting sprocket in turn to form a closed loop. The vertical hoist chain 9-4 transmits the power of the vertical hoist driving sprocket 9-1 to drive the vertical hoist guiding trolley 9-5 and the vertical hoist cargo frame 9-7 to move. The vertical conveyor 3 includes a vertical conveyor drive sprocket 3-1, a vertical conveyor drive device 3-2, a vertical conveyor redirecting sprocket 3-3, and a vertical conveyor conveying chain 3-6. The vertical conveyor drive sprocket 3-1 is connected to the upper left end of the column 5. The vertical conveyor drive sprocket 3-1 is connected to the drive device to provide power for the vertical conveyor. The input end of the vertical conveyor drive sprocket 3-1 is connected to the output end of the vertical conveyor drive device 3-2. The vertical conveyor drive device 3-2 provides a power source to drive the vertical conveyor drive sprocket 3-1 to rotate. The output power can be adjusted according to the load conditions, and it has good adaptability. The vertical conveyor redirecting sprocket 3-3 is respectively installed on the upper right, lower right and lower left ends of the column 5, and its vertical conveyor conveying chain 3-6 is wrapped around the vertical conveyor driving sprocket 3-1 and the vertical conveyor redirecting sprocket 3-3 to form a closed loop, connecting the vertical conveyor driving sprocket 3-1 and the vertical conveyor redirecting sprocket 3-3 to form a continuous transportation system, thereby driving the vertical conveyor cargo frame 3-4 to move along the vertical conveyor cargo frame guide rail 3-5. When the vertical conveyor cargo frame 3-4 moves from bottom to top, the vertical conveyor cargo frame 3-4 and the second transfer device roller conveyor 6-1 extend to one side of the vertical hoist 9 and run in an interlaced manner. The first transfer device 8 includes a first transfer device installation platform 8-2, which is the supporting structure of the entire transfer device, connected to the front end of the horizontal section of the L-shaped arm frame 11-2, and assumes the functions of fixing and supporting. The first transfer device installation platform 8-2 is connected to the front end of the horizontal section of the L-shaped arm frame 11-2. The first transfer device installation platform 8-2 is provided with a sprocket device, which controls and drives the closed-loop roller chain to move through the cooperation of the driving sprocket and a plurality of motion transmission sprockets, thereby realizing the pushing and conveying of the cargo frame, including the transfer left drive sprocket 8-13 and the right drive sprocket, each of which is The shaft is connected with multiple motion transmission sprockets 1, and the input end of the left transfer drive sprocket 8-13 is connected to the output end of the drive motor. A closed-loop roller chain is wound around the motion transmission sprocket 1 and the motion transmission sprocket 2 coplanar therewith. The motion transmission sprocket 1, the motion transmission sprocket 2 and the closed-loop roller chain wrapped therearound form a chain transmission mechanism. The conveying chain ensures continuous and stable conveying efficiency. Through the design of double sprockets, it can share power output and reduce the load of a single sprocket, thereby improving the stability and life of the overall system. The driven first transfer device cargo frame 8-4, the sprocket devices are arranged in pairs in the first The two sides of the first transfer device cargo frame 8-4 are used to drive the transfer device cargo frame, including a driving sprocket and a driven sprocket. The driving sprocket and the driven sprocket are connected by a chain. The bottom surface of the first transfer device cargo frame 8-4 is a comb-tooth structure. The first transfer device cargo frame 8-4 cargo frame is the main load-bearing part of the device and is used to transport goods 13. Its bottom surface adopts a comb-tooth structure. Such a design can cooperate with the comb-tooth structure of the first transfer device roller conveyor 8-1 to achieve smooth transfer of goods 13. The first transfer device cargo frame 8-4 is slidably matched with the first transfer device installation platform 8-2 installed on the first transfer device installation platform The guide rail 8-3 of the cargo frame of the first transfer device is used to guide the first cargo frame 8-4 to move horizontally. The middle part of the first transfer device 8 is also provided with a first transfer device roller conveyor 8-1. The first transfer device roller conveyor 8-1 has a number of rollers distributed at equal distances, and the rollers at the corresponding ends of the cargo frame form a comb-tooth structure, which is staggered with the comb-tooth structure of the cargo frame 8-4 of the first transfer device. When the cargo frame 8-4 of the first transfer device moves from top to bottom, the goods 13 fall onto the first transfer device roller conveyor 8-1. The first transfer device roller conveyor 8-1 is used to receive the goods and carry out subsequent transportation. When the cargo frame moves from top to bottom, the goods fall onto the first transfer device roller conveyor 8-1, and the rollers push the goods for further transfer. The first transfer device installation platform 8-2 is vertically arranged near the vertical hoist 9 with at least two gear sets set at different heights. The use of at least two gear sets set at different heights avoids the phenomenon of meshing vacuum sections, ensures the stable operation of the transmission system, and controls the accuracy of the lifting process through the mutual meshing of the gear set and the rack to avoid the meshing vacuum section. Each gear set includes two gears, and the symmetry plane of each gear set coincides with the symmetry plane of the driving sprocket of the corresponding sprocket device. The two sides of the vertical hoist cargo frame 9-7 are respectively connected to the racks set with corresponding gears, and the racks and the gears are connected to the racks. The wheels are meshed with each other, the gears are coaxially connected with the motion transmission sprocket, and the transmission sprockets of coaxially connected gears at different heights are not coplanar, which helps to avoid excessive crossing or interference of the chain, thereby improving the smoothness and stability of the mechanical transmission. The driving sprocket of the sprocket device of the first transfer device 8 is coaxially connected with multiple motion transmission sprockets, and the motion transmission sprocket and the coplanar motion transmission sprocket are wound with a closed-loop roller chain. The design of non-coplanar connection of gears and sprockets at different heights can avoid excessive interference or distortion of the chain or gear during operation, thereby reducing the risk of system failure. The second transfer device 6 includes a second transfer device roller conveyor 6-1, which is installed on the horizontal conveyor installation platform 7-1. The second transfer device roller conveyor 6-1 is responsible for transporting the goods 13 from one position to another in the horizontal direction. The second transfer device roller conveyor 6-1 reduces friction by rolling rollers, so that the goods 13 are more stable and efficient during the transmission process. At the same time, the transmission position is performed to transfer the goods 13 on the ship to the unloading position. One end of the second transfer device roller conveyor 6-1 is adjacent to the belt conveyor 7-2, and the other end extends to the vertical hoist 9. The second transfer device front end baffle is installed on the second transfer device roller conveyor 6-1. 6-2, the front end blocking rod 6-2 is mainly used for blocking the running position of the goods 13 when the roller conveyor 6-1 of the second transfer device transports the goods 13 to the position of the vertical hoist 9 to prevent it from exceeding the predetermined range, and at the same time cooperates with the vertical hoist 9 to transport the goods 13, which is located at the end extending to one end of the vertical hoist 9. The second transfer device 6 is also equipped with a first cylinder 6-4, a second cylinder 6-5, a second sensor 6-3, a first sensor 6-7, and a third sensor 6-6. The first cylinder 6-4 and the second cylinder 6-5 are arranged below the roller conveyor 6-1 of the second transfer device. These two cylinders mainly control the movement of the goods 13 by telescopic piston rods to block Or release the goods 13, arranged under the roller conveyor of the second transfer device, control the circulation state of the goods 13, and staggered with the rollers to block the movement of the goods 13, the second sensor 6-3 is arranged on the connecting frame on the roller conveyor 6-1 of the second transfer device, the first sensor 6-7 is arranged under the roller conveyor 6-1 of the second transfer device, the third sensor 6-6 is arranged between the first cylinder 6-4 and the second cylinder 6-5, and is located between the rollers, the first cylinder 6-4, the second cylinder 6-5, and the first sensor 6-7 stagger the intersection of the roller conveyor 6-1 of the second transfer device and the vertical conveyor 3 to ensure that there is no interference with the container, the first cylinder 6-4, the second cylinder A signal receiver is also provided on 6-5 for receiving sensor signals. The signal receiver is used to control the action of the cylinder to extend or retract the piston rod. The cooperation between the signal receiver and the sensor enables the entire system to automatically adjust according to the real-time status. When the first sensor 6-7 detects that a vertical conveyor cargo frame 3-4 has arrived at this position and there is no cargo 13 above the third sensor 6-6, the cylinder extension rod extends to block subsequent cargo 13; when the second sensor 6-3 and the first sensor 6-7 both detect that there is no vertical conveyor cargo frame 3-4, the extension rods of the first cylinder 6-4 and the second cylinder 6-5 retract, and the cargo 13 continues to move forward with the second transfer device roller conveyor 6-1.

[0040] Example 2: Please refer to Figure 5 , based on Example 1, it also has the following structure: The loading platform 10 includes a loading platform frame 10-1, which is arranged at the lower part of the vertical hoist 9. The loading platform frame 10-1 supports the entire loading platform 10 structure to ensure stability and load-bearing capacity. The loading platform frame 10-1 is connected to a loading platform roller conveyor 10-2, and a number of rollers are evenly distributed on the loading platform roller conveyor 10-2. The loading platform roller conveyor 10-2 conveys goods 13 through rollers, making the loading and unloading process more efficient and convenient. The rollers at the right end form a comb tooth structure, which is staggered with the comb teeth of the cargo frame. The comb tooth structure cooperates with the comb tooth structure of the cargo frame and is staggered with the comb tooth structure of the cargo frame. When the rollers are lifted, they are staggered with the comb teeth of the cargo frame. The cargo 13 is staggered in shape to lift the cargo 13. When the cargo frame moves, the cargo 13 on the loading platform roller conveyor 10-2 is lifted. The right end of the loading platform roller conveyor 10-2 is connected with the loading platform front end baffle 10-3. The loading platform front end baffle 10-3 is mainly used to prevent the cargo 13 from continuing to move. When the cargo 13 is driven by the loading platform roller conveyor 10-2 to move forward, the cargo 13 is intercepted by the loading platform front end baffle 10-3 and stops moving, which improves the transportation efficiency of the cargo 13 and reduces the need for manual operation. At the same time, it ensures safety and stability. Combined with the vertical lifting machine 9, a smoother logistics system is formed, which improves the overall degree of automation of the operation.

[0041] Example 3: Please refer to Fig.14 , based on Example 1, it also has the following structure: The ground unloading platform 2 includes an unloading platform roller conveyor, which is installed on the walking device 1. A number of rollers are evenly distributed on the unloading platform roller conveyor, which form a comb structure with the rollers at the corresponding ends of the cargo frame, and are arranged in a staggered manner with the comb teeth of the cargo frame. When the cargo frame moves, the cargo 13 is left on the unloading platform roller conveyor and transported to the ground. The roller conveyor is an important part of the ground unloading platform 2. Its main function is to carry and transport the cargo 13. Through the roller system, the cargo 13 can move forward smoothly on the device until it reaches In the unloading area, when working, the roller system can help the goods to slide smoothly from the cargo frame to the ground or other target locations, and the rollers are used in an alternating manner with the rollers corresponding to the cargo frame. When the goods 13 run to the unloading platform roller conveyor, the rollers of the unloading platform roller conveyor lift the goods 13 and block the goods 13, thereby realizing the transfer of the goods 13 on the ship to the unloading position. At the same time, the input end of the unloading platform roller conveyor is connected to the output end of the driving motor, and the unloading platform roller conveyor works, and then moves away from the unloading area to be taken away by the workers.

[0042] Example 4: Please refer to Figure 7-9 , based on Example 1, it also has the following structure: The first transfer device cargo frame 8-4 includes a right-angle guide frame and a mounting bearing seat 8-4-2. The two ends of the cargo frame are fixedly connected to the right-angle guide frame. Guide wheels 8-4-1 are arranged at both ends of the right-angle guide frame. The right-angle guide frame is a key structural member for supporting and guiding the cargo frame. Its function is to ensure the correct path and movement of the cargo frame in the track system. With the support of the right-angle guide frame, the cargo frame can move stably along the guide rail to avoid deviation or shaking. Guide wheels 8-4-1 are arranged at both ends of the right-angle guide frame to ensure the smooth movement of the cargo frame in the longitudinal and transverse directions. The mounting bearing seat 8-4-2 is installed on both sides of the cargo frame and the sprocket device chain The support provided by the bearing seat 8-4-2 reduces the friction between the chain and the cargo frame, making the device run more smoothly. The guide rail of the cargo frame of the first transfer device includes an elliptical guide rail and two arc-shaped auxiliary guide rails. The elliptical guide rail and the arc-shaped auxiliary guide rail are keyway-shaped. The elliptical guide rail is used to accurately guide the main track of the cargo frame. Its design enables the cargo frame to move smoothly along a specific trajectory in the track. The two arc-shaped auxiliary guide rails are located on both sides of the elliptical guide rail, respectively on the inner upper side and the outer lower side of the elliptical guide rail. These auxiliary guide rails further optimize the movement of the cargo frame. The path stability in the right angle guide frame is improved, and the translation movement of the cargo frame at the upper and lower ends is made more stable. The two arc-shaped auxiliary guide rails are respectively located on the upper inner side of the elliptical guide rail and the lower outer side of the elliptical guide rail. The two arc-shaped auxiliary guide rails fall on an elliptical track eccentric to the elliptical guide rail. The elliptical track is consistent with the elliptical guide rail in size. The two guide wheels 8-4-1 of the right angle guide frame cooperate with the elliptical guide rail and the arc-shaped auxiliary guide rail respectively. The guide wheel 8-4-1 is a key component installed at both ends of the right angle guide frame, and cooperates with the elliptical guide rail and the arc-shaped auxiliary guide rail. Through the contact between the wheel and the rail, the cargo frame can move along the track. Smooth movement, the guide wheel 8-4-1 contacts the guide rail by rolling, which can effectively reduce wear and tear compared to sliding friction, improve the service life of the device, and realize the translation of the cargo frame at the upper and lower ends of the transfer device. The entrance ends of the two arc-shaped guide rails are provided with horn guide openings. The horn guide openings are used to guide the cargo frame to enter the track smoothly and prevent direct collision between the cargo frame and the track. The smooth guide openings reduce sudden impact when materials or cargo frames enter, thereby improving the safety and durability of the entire system. The top and bottom of the elliptical guide rails correspond to the position of the second half of the arc-shaped guide rails. A notch is provided on the upper part of the track to prevent motion interference.

[0043] Directions: 1) When unloading, the equipment is driven toward the unloading hatch by the traveling device 1, the hydraulic cylinder of the movable arm moving device 11 is controlled to move the movable arm 11-1, the loading platform 10 is adjusted to the unloading hatch, and the cargo 13 is manually placed on the loading platform roller conveyor 10-2. The cargo 13 is driven forward by the conveyor. When the cargo 13 reaches the stop bar 10-3 at the front end of the loading platform 10, the cargo 13 stops moving; 2) The driving device of the vertical hoist 9 drives the sprocket and the redirecting sprocket to rotate by the chain linkage, and the guide trolley 9-5 connected to the chain drives the cargo frame thereon to move. When the cargo frame intersects with the loading platform roller conveyor 10-2, the comb teeth and rollers of the cargo frame are arranged in a staggered manner, so that the cargo frame passes through the loading platform roller conveyor 10-2 and lifts the cargo 13 thereon. The cargo 13 is lifted by the vertical hoist 9 and then sent to the first transfer device 8; 3) The rack on the vertical hoist cargo frame 9-7 meshes with the gear set on the first transfer device 8, driving the first transfer device cargo frame 8-4 to move upward at a faster speed than the vertical hoist cargo frame 9-7. The goods 13 are lifted from the vertical hoist cargo frame 9-7 and moved above the first transfer device roller conveyor 8-1. When the cargo frame 8-4 descends, the goods 13 are placed on the first transfer device roller conveyor 8-1, and then transported by the conveyor to the belt conveyor 7-2 of the horizontal conveyor 7; 4) Driven by the belt conveyor 7-2, the goods 13 are sent to the roller conveyor 6-1 of the second transfer device. When the first sensor 6-7 detects that the vertical conveyor cargo frame 3-4 has arrived at this position and there is no cargo 13 above the third sensor 6-6, the cylinder extension rod extends to block the subsequent goods 13; when the second sensor 6-3 and the first sensor 6-7 both detect that there is no vertical conveyor cargo frame, the extension rods of the first cylinder 6-4 and the second cylinder 6-5 retract, and the goods 13 continue to move forward with the roller conveyor 6-1 of the second transfer device until they are intercepted by the blocking rod 6-2 in front; then the vertical conveyor drive device drives the drive sprocket and the redirecting sprocket to rotate, driving the chain around it to rotate cyclically, and the cargo frame guide trolley lifts the cargo frame from the roller conveyor 6-1 of the second transfer device; 5) Cargo 13 is lifted by vertical conveyor 3 and then delivered to unloading platform 2. When vertical conveyor cargo frame 3-4 moves from above to below the unloading platform roller conveyor, cargo 13 falls on the conveyor and is then transported away from the unloading area and taken away by workers.

[0044] 6) After completing the unloading of one layer of cargo 13, or when the height of the loading platform 10 needs to be adjusted due to tidal changes, start the hydraulic system to control the hydraulic cylinder of the movable arm moving device 11 to extend or retract to achieve height adjustment. In this way, the equipment can continue to operate to complete the unloading. After the unloading operation is completed, start the movable arm moving device 11 to raise the movable arm 11-1 to a safe height, and then start the walking device 1 to transport the equipment to the next hatch or leave the port.

[0045] The various conveyors, transfer devices and other components of the continuous ship unloader of the present invention can be arranged simultaneously on both sides of the column and the movable arm moving device to perform operations with higher efficiency.

[0046] The above is only an embodiment of the present invention, and the common sense such as the known specific structure and characteristics in the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A chain-type continuous unloader for piece goods, characterized in that: The invention comprises an unloading platform (2), a loading platform (10), a walking device (1), a column (5) mounted on the walking device (1), a vertical conveyor (3) mounted on the column (5), a balancing arm (4), and a movable arm moving device (11), wherein the loading platform (10) is mounted on the bottom of the movable arm moving device (11) and is used for loading goods (13), and the unloading platform (2) is mounted on the walking device (1) and is used for conveying the goods (13) to the ground. The movable arm moving device (11) comprises an L-shaped arm frame (11-2), a movable arm (11-1), and an inclined tie rod (11-3); the vertical section of the L-shaped arm frame (11-2) is equipped with a movable lifting hydraulic cylinder; the movable arm (11-1) is slidably matched with the vertical section of the L-shaped arm frame (11-2); the cylinder rod (11-5-2) of the movable lifting hydraulic cylinder is fixedly connected to the movable arm (11-1); the end of the horizontal section of the L-shaped arm frame (11-2) is hinged to the upper part of the column (5); and the two ends of the inclined tie rod (11-3) are respectively hinged to the horizontal section and the vertical section of the L-shaped arm frame (11-2), so as to increase the rigidity of the L-shaped arm frame (11-2); A horizontal conveyor (7) is installed on the horizontal section of the L-shaped arm frame (11-2), a second transfer device (6) is installed at the end of the horizontal section, and a first transfer device (8) is installed at the front end. A vertical hoist (9) is installed on the movable arm (11-1) of the L-shaped arm frame (11-2). The horizontal conveyor (7) comprises a horizontal conveyor installation platform (7-1) and a belt conveyor (7-2) installed thereon. The vertical hoist (9) is used to lift goods (13) to the first transfer device (8). The first transfer device (8) is used to transfer the goods (13) from the vertical hoist (9) to the horizontal conveyor (7). The horizontal conveyor (7) is used to transport the goods (13) to the column (5). The second transfer device (6) is used to transfer the goods (13) from the horizontal conveyor (7) to the vertical conveyor (3).

2. The chain-type continuous ship unloader for piece goods according to claim 1, characterized in that: The vertical hoist (9) and the vertical conveyor (3) have the same structure, including a driving sprocket, a driving device, and three redirecting sprockets. The input end of the driving sprocket is connected to the output end of the driving device. The driving sprocket and the three redirecting sprockets are distributed in a rectangular array on the installed component and are surrounded by a chain. Guide trolleys are evenly distributed on the chain links of the chain. A cargo frame is hinged on the guide trolley. The bottom surface of the cargo frame is a comb-tooth structure. It also includes a guide rail for the guide trolley, which is installed on the installed component of the vertical hoist (9) or the vertical conveyor (3). The guide rail for the guide trolley is mounted on the outside of the chain.

3. The chain-type continuous unloader for piece goods according to claim 1, characterized in that: The loading platform (10) comprises a loading platform frame (10-1), the loading platform frame (10-1) being arranged at the bottom of the vertical lift (9), the loading platform frame (10-1) being connected to a loading platform roller conveyor (10-2), a plurality of rollers being evenly distributed on the loading platform roller conveyor (10-2), the rollers at the right end forming a comb tooth structure, being arranged in a staggered manner with the comb teeth of the cargo frame, and being used for lifting the cargo (13) on the loading platform roller conveyor (10-2) when the cargo frame moves, and the right end of the loading platform roller conveyor (10-2) being connected to a loading platform front end stopper (10-3).

4. The chain-type continuous ship unloader for piece goods according to claim 1, characterized in that: The ground unloading platform (2) comprises an unloading platform roller conveyor, which is mounted on the walking device (1). A plurality of rollers are evenly distributed on the unloading platform roller conveyor, which form a comb tooth structure with rollers at corresponding ends of the cargo frame and are arranged in a staggered manner with the comb teeth of the cargo frame. When the cargo frame moves, the cargo (13) is left on the unloading platform roller conveyor and transported to the ground.

5. The chain-type continuous unloader for piece goods according to claim 1, characterized in that: The first transfer device (8) comprises a first transfer device installation platform (8-2), the first transfer device installation platform (8-2) is connected to the front end of the horizontal section of the L-shaped arm frame (11-2), and a plurality of first transfer device cargo frames (8-4) driven by a sprocket device are arranged on the first transfer device installation platform (8-2), the sprocket devices are arranged in pairs on both sides of the first transfer device cargo frame (8-4), and are used to drive the transfer device cargo frame, including a driving sprocket and a driven sprocket, and the driving sprocket and the driven sprocket are connected by a chain, and the bottom surface of the first transfer device cargo frame (8-4) is a comb-tooth structure, and the first transfer device cargo frame (8-4) is a plurality of first transfer device cargo frames (8-4) driven by a sprocket device. ) is slidably matched on the first transfer device cargo frame guide rail (8-3) installed on the first transfer device installation platform (8-2), and is used to guide the first transfer device cargo frame (8-4) to move horizontally. A first transfer device roller conveyor (8-1) is also provided in the middle of the first transfer device (8). The first transfer device roller conveyor (8-1) has a plurality of rollers distributed at equal intervals, and the rollers at the corresponding ends of the cargo frame form a comb tooth structure, which is staggered with the comb tooth structure of the first transfer device cargo frame (8-4), so that when the first transfer device cargo frame (8-4) moves from top to bottom, the goods (13) fall onto the first transfer device roller conveyor (8-1).

6. The chain-type continuous ship unloader for piece goods according to claim 1, characterized in that: The movable arm (11-1) and the vertical section of the L-shaped arm frame (11-2) are provided with movable guide wheels.

7. The chain-type continuous unloader for piece goods according to claim 5, characterized in that: The first transfer device installation platform (8-2) is vertically arranged near the vertical elevator (9) with at least two gear sets set at different heights, which are used to avoid meshing vacuum sections. Each gear set includes two gears, and the symmetry plane of each gear set coincides with the symmetry plane of the drive sprocket of the corresponding sprocket device. The two sides of the vertical elevator cargo frame (9-7) are respectively connected to racks set with corresponding gears, and the racks and gears are meshed with each other. The gears are coaxially connected to the motion transmission sprocket, and the coaxially connected transmission sprockets of gears at different heights are not coplanar. The drive sprocket of the sprocket device of the first transfer device (8) is coaxially connected to multiple motion transmission sprockets, and a closed-loop roller chain is wound around the motion transmission sprocket and the coplanar motion transmission sprocket.

8. The chain-type continuous unloader for piece goods according to claim 5, characterized in that: The cargo frame (8-4) of the first transfer device comprises a right-angle guide frame and a mounting bearing seat (8-4-2), both ends of the cargo frame are fixedly connected to the right-angle guide frame, both ends of the right-angle guide frame are provided with guide wheels (8-4-1), the mounting bearing seat (8-4-2) is installed on both sides of the cargo frame and is fixedly connected to the chain of the sprocket device, the guide rail of the cargo frame of the first transfer device comprises an elliptical guide rail and two arc-shaped auxiliary guide rails, the elliptical guide rail and the arc-shaped auxiliary guide rail are keyway-shaped, and the two arc-shaped auxiliary guide rails are respectively located on the inner side of the elliptical guide rail The two arc-shaped auxiliary guide rails are arranged on the side and the outer lower side of the elliptical guide rail, and the two arc-shaped auxiliary guide rails fall on an elliptical track eccentric to the elliptical guide rail. The elliptical track is consistent in size with the elliptical guide rail. The two guide wheels (8-4-1) of the right-angle guide frame cooperate with the elliptical guide rail and the arc-shaped auxiliary guide rail respectively to realize the translation of the cargo frame of the transfer device at the upper and lower ends. The entrance ends of the two arc-shaped guide rails are provided with trumpet guide ports. The top and bottom of the elliptical guide rails correspond to the position of the rear half of the arc-shaped guide rail. The upper part of the track is provided with a notch to prevent movement interference.

9. The chain-type continuous unloader for piece goods according to claim 1, characterized in that: The second transfer device (6) comprises a second transfer device roller conveyor (6-1), the second transfer device roller conveyor (6-1) being mounted on a horizontal conveyor mounting platform (7-1), one end of the second transfer device roller conveyor (6-1) being adjacent to a belt conveyor (7-2), and the other end extending to a vertical elevator (9), a second transfer device front end stopper (6-2) being mounted on the second transfer device roller conveyor (6-1), and being located at the end extending to one end of the vertical elevator (9), the second transfer device (6) also being mounted with a first cylinder (6-4), a second cylinder (6-5), a second sensor (6-3), a first sensor (6-7), and a third sensor (6-6), the first cylinder (6-4) and the second cylinder (6-5) being arranged on the second transfer device roller conveyor (6-1). The conveyor (6-1) is arranged below the conveyor and staggered with the rollers to block the movement of the goods (13). The second sensor (6-3) is arranged on a connecting frame on the roller conveyor (6-1) of the second transfer device. The first sensor (6-7) is arranged below the roller conveyor (6-1) of the second transfer device. The third sensor (6-6) is arranged between the first cylinder (6-4) and the second cylinder (6-5) and is located between the rollers. The first cylinder (6-4), the second cylinder (6-5) and the first sensor (6-7) are staggered at the intersection of the roller conveyor (6-1) of the second transfer device and the vertical conveyor (3) to ensure that there is no interference with the container. The first cylinder (6-4) and the second cylinder (6-5) are also provided with signal receivers to receive signals from the sensors and extend or retract the piston rods.

10. The unloading method of the chain-type continuous piece-article unloader according to claim 1, comprising the following steps: 1) When unloading, the equipment is driven toward the unloading hatch by the traveling device (1), the hydraulic cylinder of the movable arm moving device (11) is controlled to move the movable arm (11-1), the loading platform (10) is adjusted to the unloading hatch, and the cargo (13) is manually placed on the loading platform roller conveyor (10-2), and the cargo (13) is driven forward by the conveyor. When the cargo (13) reaches the stop bar (10-3) at the front end of the loading platform (10), the cargo (13) stops moving; 2) The driving device of the vertical hoist (9) drives the sprocket and the redirecting sprocket to rotate by a chain linkage, and the guide trolley (9-5) connected to the chain drives the cargo frame thereon to move. When the cargo frame intersects with the roller conveyor (10-2) on the loading platform, the comb teeth and the rollers of the cargo frame are arranged in a staggered manner, so that the cargo frame passes through the roller conveyor (10-2) on the loading platform and lifts the cargo (13) thereon. The cargo (13) is lifted by the vertical hoist (9) and then sent to the first transfer device (8); 3) The rack on the cargo frame (9-7) of the vertical elevator meshes with the gear set on the first transfer device (8), driving the cargo frame (8-4) of the first transfer device to move upward at a speed faster than the cargo frame (9-7) of the vertical elevator, and the cargo (13) is lifted from the cargo frame (9-7) and moved to the top of the roller conveyor (8-1) of the first transfer device. When the cargo frame (8-4) descends, the cargo (13) is placed on the roller conveyor (8-1) of the first transfer device, and then transported by the conveyor to the belt conveyor (7-2) of the horizontal conveyor (7); 4) Driven by the belt conveyor (7-2), the cargo (13) is delivered to the roller conveyor (6-1) of the second transfer device. When the first sensor (6-7) detects that a vertical conveyor cargo frame (3-4) has arrived at the position and there is no cargo (13) above the third sensor (6-6), the cylinder extension rod extends to block the subsequent cargo (13); when the second sensor (6-3) and the first sensor (6-7) both detect that there is no vertical conveyor cargo frame, the extension rods of the first cylinder (6-4) and the second cylinder (6-5) retract, and the cargo (13) continues to move forward with the roller conveyor (6-1) of the second transfer device until it is intercepted by the blocking rod (6-2) in front; then the vertical conveyor drive device drives the drive sprocket and the redirecting sprocket to rotate, driving the chain surrounding them to rotate cyclically, and the cargo frame guide trolley lifts the cargo frame from the roller conveyor (6-1) of the second transfer device; 5) The cargo (13) is lifted by the vertical conveyor (3) and then delivered to the unloading platform (2). When the vertical conveyor cargo frame (3-4) moves from the top to the bottom of the unloading platform roller conveyor, the cargo (13) falls on the conveyor and is then transported away from the unloading area and taken away by workers. 6) After completing the unloading of one layer of cargo (13), or when the height of the loading platform (10) needs to be adjusted due to tidal changes, the hydraulic system is started to control the hydraulic cylinder of the movable arm moving device (11) to extend or retract to achieve height adjustment. In this way, the equipment can continuously operate to complete the unloading; after the unloading operation is completed, the movable arm moving device (11) is started to raise the movable arm (11-1) to a safe height, and then the walking device (1) is started to transport the equipment to the next hatch or leave the port.

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