Novel port portal crane grab bucket operation bulk cargo mechanism

Abstract

The invention discloses a novel port portal crane grab bucket operation bulk cargo mechanism, and relates to the technical field of port operation. A novel port portal crane grab bucket operation bulk cargo mechanism comprises a grab bucket assembly, a connecting part used for being connected with a portal crane is arranged on the upper side of the grab bucket assembly, the grab bucket assembly comprises a protective shell part, the protective shell part comprises a grab bucket, the upper portion of the grab bucket is semicircular, and the lower portion of the grab bucket is inwards contracted to form a tip end. A bucket assembly is movably arranged in the protective shell component, a driving component providing power for movement of the bucket assembly is arranged on the protective shell component, the driving component comprises a shaft body component and a linkage component, the shaft body component comprises a transverse shaft movably connected with the grab bucket through a bearing, and the two ends of the transverse shaft extend out of the grab bucket and are fixedly sleeved with first belt pulleys. According to the novel port portal crane grab bucket operation bulk cargo mechanism, bulk cargos are uniformly guided into the bucket to be collected through rotation of the bucket assembly, and the full cargo grabbing capacity of the grab bucket is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of port operations, and particularly to a novel bulk cargo mechanism for a portal crane grab operation at a port. Background Art

[0002] Most portal cranes run along crane tracks on the ground or buildings for lifting and loading / unloading operations. Portal cranes can be classified into three categories according to their uses. Among them, the portal cranes for loading and unloading are mainly used in ports and open storage yards, and are used for loading and unloading with grabs or hooks, and have a relatively high working speed.

[0003] The patent with the publication number CN221295910U discloses a port bulk cargo grab structure adapted to a portal crane, including a boom. A power structure is arranged on the boom, and the power structure is connected to a bucket through a clamping structure. The power structure is used to drive the clamping structure to move at the same speed, so as to open or close the buckets on both sides. Compared with a hydraulic scallop grab, the clamping structure of this device can achieve the function of a scallop grab and has the characteristic of self-locking, and is not easy to cause errors.

[0004] The bulk cargo is grabbed by opening or closing the buckets. The grabbing efficiency of the buckets is relatively fast when the bulk cargo is piled up. When the bulk cargo is about to bottom out, the loading capacity of the bucket grabbing operation will be greatly reduced, and the accuracy of the bucket will also be greatly reduced. Therefore, there is an urgent need for a novel bulk cargo mechanism for a portal crane grab operation at a port to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a novel bulk cargo mechanism for a portal crane grab operation at a port to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A novel bulk cargo mechanism for a portal crane grab operation at a port, including a grab assembly, and a connecting component for connecting the portal crane is arranged on the upper side of the grab assembly;

[0007] The grab assembly includes a housing component, and the housing component includes a grab;

[0008] The upper part of the grab is semicircular, and the lower part of the grab is inwardly retracted to form a tip;

[0009] A bucket assembly is movably arranged in the housing component, and a driving component for providing power for the movement of the bucket assembly is arranged on the housing component;

[0010] The driving component includes a shaft assembly and a linkage assembly, wherein the shaft assembly includes a transverse shaft movably connected to the grab bucket through a bearing, two ends of the transverse shaft respectively extend out of the grab bucket and are fixedly sleeved with a first pulley, and two sides of the middle of the transverse shaft are respectively fixedly connected with panels corresponding to the two side planes of the grab bucket;

[0011] The bucket assembly rotates in the casing component with the shaft assembly as the axis, and the lowest point of rotation of the bucket assembly is flush with the lower part of the grab bucket;

[0012] The bucket assembly comprises a bucket part, and the bucket part comprises a fan-shaped shovel frame assembly and a shaft sleeve assembly located at the central axis thereof. The shovel frame assembly comprises a bucket, and scrapers are fixedly connected to both ends of the side arc surface of the bucket.

[0013] As a preferred technical solution of the present invention, the connecting component includes a connecting column, and connecting arms are hinged on both sides of the connecting column through hinges. The end of the connecting arm away from the connecting column is hinged with a support foot fixedly connected to the grab bucket through a rotating shaft.

[0014] As a preferred technical solution of the present invention, the outer sides of the grab bucket are respectively fixedly connected with a cover shell adapted to cover the first pulley;

[0015] Replaceable foot pad assemblies are respectively arranged at the lower part of the two side planes of the grab bucket, and the foot pad assemblies include foot pads adapted to engage with the side planes of the grab bucket, and the upper end surfaces of the foot pads are fixedly connected with studs screwed to the side planes of the grab bucket.

[0016] The linkage assembly includes a gear box, a motor is dockedly mounted on the upper side of the gear box, and second pulleys corresponding to the first pulley are dockedly mounted on both ends of the gear box, and a belt penetrating the housing is commonly sleeved between the second pulley and the first pulley opposite thereto;

[0017] The middle part of the upper surface of the grab bucket is fixedly connected to a gear box.

[0018] As a preferred technical solution of the present invention, the shaft sleeve assembly includes a sleeve ring fixedly sleeved with the transverse shaft, and a slide plate with a hollow interior is fixedly connected to one side of the sleeve ring; gaps are left between the two ends of the slide plate and the two side planes of the bucket;

[0019] The two ends of the slide plate are symmetrically fixed with baffles, and the middle part of the baffle bar facing the slide plate is provided with a baffle groove; the baffle bar is fixedly connected to the collar; the two ends of the baffle bar facing the slide plate are correspondingly fixed with buckets;

[0020] A connecting plate that fits the horizontal axis is fixedly connected between the end of the slide plate facing the collar and the bucket, the connecting plate fits the baffle bar, and the baffle bar, the connecting plate and the insert plate are correspondingly engaged.

[0021] The bucket component is provided with a paddle component, the paddle component includes a paddle adapted to be inserted into the bucket, one end of the paddle plate fits the side arc surface of the bucket, the other end of the paddle plate is provided with a slot adapted to be connected to the card-connecting slide in the middle, a slide rod for slidingly plugging the slide rod is fixedly connected in the slot, spring pads are fixedly connected on both sides of the slide rod, and the end of the spring pad away from the slide rod is fixedly connected to the slide rod;

[0022] The other end of the paddle is respectively fixedly connected to arc-shaped baffles on both sides, and the baffles fit the slide plate.

[0023] The paddle component is provided with a limiting component, the limiting component comprises a flat plate, both ends of the flat plate are fitted with the grab bucket, a connecting plate is fixedly connected to the surface of the flat plate, and the connecting plate is adapted to be clamped between the ends of the two baffles away from the paddle plate;

[0024] The two sides of the flat plate are respectively fixedly connected with side plates, and one end of the side plate away from the flat plate is fixedly connected with a gravity roller.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] (1) A novel bulk cargo mechanism for grabbing bucket of a port gantry crane, which can drive the bucket assembly to work by a driving component without causing the bucket assembly to collide with the cargo box due to distance problems, thereby improving the protection of the bucket assembly.

[0027] (2) A new type of bulk cargo mechanism for grabbing bucket of a port gantry crane. During the rotation of the bucket assembly, the scraper of the shovel frame assembly can fit the bottom of the cargo box to collect the bulk cargo. The rotation of the bucket assembly guides the bulk cargo into the bucket for collection, thereby improving the grabbing capacity of the grab.

[0028] (3) A new type of bulk cargo mechanism for grab bucket operation of a port gantry crane, wherein the bucket assembly can rotate in both forward and reverse directions with the shaft assembly as the axis, so that it can be used in different cargo box environments and improve the ability to adapt to the environment.

[0029] (4) A new type of bulk cargo mechanism for grab bucket operation of a port gantry crane, which drives the shifting plate in the bucket according to the amount of cargo shoveled into the bucket, thereby expanding the single-sided material holding range of the bucket and improving the adaptability of the bucket assembly.

[0030] (5) A novel bulk cargo mechanism for grabbing bucket of a port gantry crane. After the shovel frame assembly is inverted, the bulk cargo inside it automatically tilts downward under the action of the centroidal stress. At this time, the paddle returns to the middle position of the bucket under the support of the spring pad, so that the space on both sides of the paddle is tilted downward, thereby assisting the complete dumping of the bulk cargo and improving the completeness of material unloading.

[0031] (6) A novel bulk cargo mechanism for a portal jib crane in a port. The presence of the limiting component can prevent the continuous downward movement of the grab component, thus saving the moving procedure of the grab component and improving the delivery efficiency.

[0032] (7) A novel bulk cargo mechanism for a portal jib crane in a port. The limiting component can determine an appropriate scooping depth, preventing the bucket component from being completely immersed in the cargo. Inserting the bucket component to an appropriate depth can make the scooping of the bucket component easier and further improve the delivery efficiency.

[0033] (8) A novel bulk cargo mechanism for a portal jib crane in a port. Through the limitation of the limiting component, the bushing component is prevented from being immersed in the cargo. Especially for fine goods, it can reduce the smooth operation caused by the infiltration of goods into the components and further improve the ability of the protection device.

[0034] (9) A novel bulk cargo mechanism for a portal jib crane in a port. When the bucket component needs to be flipped for movement, the side plate can also deform during contact with the cargo, improving the flexibility of the device. Brief Description of the Drawings

[0035] Figure 1 It is a schematic structural diagram of the present invention;

[0036] Figure 2 It is a schematic diagram of the protective shell component of the present invention;

[0037] Figure 3 It is a schematic diagram of the driving component of the present invention;

[0038] Figure 4 It is a schematic connection diagram of the shaft body component of the present invention;

[0039] Figure 5 It is a schematic diagram of the position of the bucket component of the present invention;

[0040] Figure 6 It is a schematic diagram of the bucket component of the present invention;

[0041] Figure 7 It is a schematic diagram of the bucket part of the present invention;

[0042] Figure 8 It is a schematic diagram of the dial plate part of the present invention;

[0043] Figure 9 It is a schematic diagram of the dial plate of the present invention;

[0044] Figure 10 It is a schematic diagram of the limiting component of the present invention;

[0045] Figure 11 It is a schematic diagram of the position of the dial plate part of the present invention;

[0046] Figure 12 For the present invention Figure 11 Enlarged schematic view at location A;

[0047] Figure 13 Schematic connection diagram of the bushing assembly of the present invention;

[0048] Figure 14 Schematic diagram of the connecting component of the present invention.

[0049] In the figure: 1. Housing component; 101. Grab bucket; 102. Housing; 103. Foot pad; 104. Stud; 2. Driving component; 201. Horizontal shaft; 202. First pulley; 203. Panel; 204. Gearbox; 205. Motor; 206. Second pulley; 207. Belt; 3. Bucket component; 301. Bucket; 302. Scraper; 303. Collar; 304. Slide plate; 305. Stop bar; 306. Stop groove; 307. Connecting plate; 4. Paddle component; 401. Paddle; 402. Card slot; 403. Slide bar; 404. Spring washer; 405. Baffle; 5. Limiting component; 501. Flat plate; 502. Connecting plate; 503. Side plate; 504. Gravity roller; 6. Connecting component; 601. Connecting column; 602. Connecting arm; 603. Support leg. Detailed implementation method

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0051] Embodiment: Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , a novel grab operation bulk cargo mechanism for a portal crane in a port, including a grab bucket assembly, and a connecting component 6 for connecting to the portal crane is arranged on the upper side of the grab bucket assembly;

[0052] The grab bucket assembly includes a housing component 1, and the housing component 1 includes a grab bucket 101;

[0053] The upper part of the grab bucket 101 is semicircular, and the lower part of the grab bucket 101 is inwardly recessed to form a tip;

[0054] A bucket assembly is movably arranged in the housing component 1, and a driving component 2 for providing power for the movement of the bucket assembly is arranged on the housing component 1;

[0055] The driving component 2 includes a shaft body assembly and a linkage assembly. The shaft body assembly includes a transverse shaft 201 that is movably connected to the grab 101 through bearings. Both ends of the transverse shaft 201 extend out of the grab 101 and are fixedly sleeved with first belt pulleys 202. On both sides of the middle part of the transverse shaft 201, there are respectively fixedly connected panels 203 that correspondingly fit the two side planes of the grab 101.

[0056] The bucket assembly rotates within the housing component 1 with the shaft body assembly as the axis. The lowest point of the rotation of the bucket assembly is flush with the lower part of the grab 101. Initially, the bucket assembly rotates to the upper part of the grab 101.

[0057] The bucket assembly includes a bucket component 3. The bucket component 3 includes a fan-shaped bucket frame assembly and a bushing assembly at its central axis. The bucket frame assembly includes a bucket 301. At both ends of the side arc surface of the bucket 301, there are respectively fixedly connected scraping plates 302.

[0058] Please refer to Figure 1 、 Figure 14 , the connecting component 6 includes a connecting column 601. On both sides of the connecting column 601, there are link arms 602 movably hinged through hinges. One end of the link arm 602 far from the connecting column 601 is movably hinged through a rotating shaft to a support leg 603 fixedly connected to the grab 101.

[0059] Please refer to Figure 1 、 Figure 2 、 Figure 3 , on the outer sides of the two side planes of the grab 101, there are respectively fixedly connected housing shells 102 adapted to cover and connect the first belt pulleys 202.

[0060] On the lower parts of the two side planes of the grab 101, there are respectively provided replaceable foot pad assemblies. The foot pad assemblies include foot pads 103 adapted to and connected with the side planes of the grab 101. On the upper end surface of the foot pad 103, there is a stud 104 screwed to the side plane of the grab 101.

[0061] The linkage assembly includes a gearbox 204. On the upper side of the gearbox 204, there is a motor 205 docked and installed. At both ends of the gearbox 204, there are respectively docked and installed second belt pulleys 206 corresponding to the first belt pulleys 202. Between the second belt pulley 206 and the opposite first belt pulley 202, there is a belt 207 sleeved together and passing through the housing shell 102.

[0062] The middle part of the upper surface of the grab 101 is fixedly connected to the gearbox 204.

[0063] Please refer to Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12 、 Figure 13, the bushing assembly includes a collar 303 fixedly sleeved on the horizontal shaft 201, and a hollow skateboard 304 is fixedly connected to one side of the collar 303; there is a gap between both ends of the skateboard 304 and the two side planes of the bucket 301;

[0064] Blocking strips 305 are symmetrically and fixedly connected to both ends of the skateboard 304 respectively. A blocking groove 306 is formed in the middle of the side of the blocking strip 305 facing the skateboard 304; the blocking strip 305 is fixedly connected to the collar 303; the two ends of the side of the blocking strip 305 facing the skateboard 304 are fixedly connected to the bucket 301 correspondingly;

[0065] A connecting plate 307 that fits the horizontal shaft 201 is fixedly connected between the end of the skateboard 304 facing the collar 303 and the bucket 301. The connecting plate 307 fits the blocking strip 305, and the blocking strip 305, the connecting plate 307 and the embedded plate 203 are correspondingly engaged.

[0066] A dialing plate component 4 is arranged on the bucket component 3. The dialing plate component 4 includes a dialing plate 401 adapted to be inserted into the bucket 301. One end of the dialing plate 401 fits the side arc surface of the bucket 301. A clamping groove 402 adapted to be engaged with the skateboard 304 is formed in the middle of the other end of the dialing plate 401. A sliding rod 403 that is slidably inserted into the skateboard 304 is fixedly connected in the clamping groove 402. Elastic pads 404 are fixedly connected to both sides of the sliding rod 403 respectively. One end of the elastic pad 404 away from the sliding rod 403 is fixedly connected to the skateboard 304; when the dialing plate 401 moves to the port of the bucket 301, it is adapted to be embedded in the blocking groove 306;

[0067] Arc-shaped baffle plates 405 are fixedly connected to both sides of the other end of the dialing plate 401 respectively. The baffle plates 405 fit the skateboard 304.

[0068] A limiting component 5 is arranged on the dialing plate component 4. The limiting component 5 includes a flat plate 501. Both ends of the flat plate 501 fit the grab bucket 101. A connecting plate 502 is fixedly connected to the surface of the flat plate 501. The connecting plate 502 is adapted to be engaged between the ends of the two baffle plates 405 away from the dialing plate 401;

[0069] Side plates 503 are fixedly connected to both sides of the flat plate 501 respectively. The side plates 503 are made of elastic materials. Gravity rollers 504 are fixedly connected to the ends of the side plates 503 away from the flat plate 501.

[0070] The working principle of the present invention is as follows:

[0071] When grabbing goods, it is necessary to first put the grab bucket assembly into the cargo box. By vertically putting the grab bucket assembly, the lower part of the side plane of the grab bucket 101 touches the bottom, and the lowest point of the rotation of the bucket assembly is flush with the lower part of the grab bucket 101. Therefore, when the bucket assembly is driven by the driving component 2 to work, there will be no collision between the bucket assembly and the cargo box due to the distance problem, improving the protection of the bucket assembly.

[0072] When the amount of bulk cargo in the cargo box is insufficient, the bucket assembly is driven to rotate by the driving component 2, and the lowest point of the bucket assembly is flush with the lower part of the grab bucket 101. Therefore, during the rotation of the bucket assembly, the scraper 302 of the shovel frame assembly can fit the bottom of the cargo box to collect the bulk cargo. The rotation of the bucket assembly can uniformly guide the bulk cargo into the bucket 301 for collection, thereby improving the full cargo grabbing capacity of the grab bucket.

[0073] The two ends of the side arc surface of the bucket 301 are fixedly connected with scrapers 302, and the two ends of the gear box 204 are respectively connected with second pulleys 206 corresponding to the first pulley 202, so that the bucket assembly can rotate in both forward and reverse directions with the shaft assembly as the axis, so that it can be used in different cargo box environments and improve its ability to adapt to the environment.

[0074] The shift plate component 4 is slidably inserted in the slide plate 304 through the slide rod 403, and both sides of the slide rod 403 are supported by spring pads 404, so that it can cooperate with the rotation of the bucket assembly in the shell component 1, so that the shift plate 401 is offset to different ends in the bucket 301. The amount of cargo shoveled into the bucket 301 pushes the shift of the shift plate 401 in the bucket 301, thereby expanding the single-sided material holding range of the bucket 301 and improving the adaptability of the bucket assembly.

[0075] When unloading, the bucket assembly is driven to rotate by the driving component 2, so that the shovel frame assembly is inverted on the upper part of the grab bucket 101, thereby dumping the bulk cargo in the shovel frame assembly. After the shovel frame assembly is inverted, the bulk cargo therein automatically dumps downward under the action of the centroidal stress. At this time, the paddle plate 401 returns to the middle position in the bucket 301 under the support of the spring pad 404, so that the space on both sides of the paddle plate 401 is in a downward dumping shape, thereby assisting the complete dumping of the bulk cargo and improving the completeness of unloading.

[0076] When the amount of bulk cargo in the cargo box is sufficient, through the presence of the limiting component 5, after the grab bucket assembly is vertically inserted into the bulk cargo, the plane formed by the limiting component 5 blocks the downward movement of the grab bucket assembly. In this state, the carrying capacity of the bucket assembly can be met. The presence of the limiting component 5 can prevent the grab bucket assembly from moving further downward, thereby saving the moving process of the grab bucket assembly and improving delivery efficiency.

[0077] The limiting component 5 can be used to determine a suitable shoveling depth, thereby preventing the bucket assembly from being completely immersed in the cargo. Inserting the bucket assembly to a suitable depth can make shoveling of the bucket assembly easier, thereby further improving delivery efficiency.

[0078] The limiting component 5 is used to limit the shaft sleeve assembly from being immersed in the cargo. This can reduce the poor operation caused by the cargo penetrating into the components, especially for small cargoes, and further improve the capability of the protection device.

[0079] The side plate 503 is made of an elastic material, so that when the grab assembly sinks, its flattening under the action of the gravity roller 504 can hinder the continuous movement of the grab assembly. When it is necessary to flip the bucket assembly for movement, the side plate 503 can also deform during the contact with the goods, improving the flexibility of the device.

[0080] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel bulk cargo mechanism for grabbing bucket of a port gantry crane, comprising a grabbing bucket assembly, wherein a connecting component (6) for connecting to a gantry crane is arranged on the upper side of the grabbing bucket assembly; The grab bucket assembly comprises a shell protection component (1), and the shell protection component (1) comprises a grab bucket (101); Features: The upper part of the grab bucket (101) is semicircular, and the lower part of the grab bucket (101) is inwardly pointed. A bucket assembly is movably arranged in the casing component (1), and a driving component (2) for providing power for the movement of the bucket assembly is arranged on the casing component (1); The driving component (2) comprises a shaft assembly and a linkage assembly, wherein the shaft assembly comprises a transverse shaft (201) movably connected to the grab bucket (101) through a bearing, two ends of the transverse shaft (201) respectively extend out of the grab bucket (101) and are fixedly sleeved with a first pulley (202), and two sides of the middle of the transverse shaft (201) are respectively fixedly connected with panels (203) corresponding to the two side planes of the grab bucket (101); The bucket assembly rotates in the casing component (1) with the shaft assembly as the axis, and the lowest point of rotation of the bucket assembly is flush with the lower part of the grab bucket (101); The bucket assembly comprises a bucket part (3), wherein the bucket part (3) comprises a fan-shaped shovel frame assembly and a shaft sleeve assembly located at the central axis thereof, wherein the shovel frame assembly comprises a bucket (301), and scrapers (302) are respectively fixedly connected to both ends of the side arc surface of the bucket (301).

2. According to claim 1, a new type of bulk cargo grabbing mechanism for port gantry crane is characterized by: The connecting component (6) comprises a connecting column (601), and connecting arms (602) are movably hinged on both sides of the connecting column (601) through hinges, and one end of the connecting arm (602) away from the connecting column (601) is movably hinged to a support foot (603) fixedly connected to the grab bucket (101) through a rotating shaft.

3. According to claim 1, a new type of bulk cargo grabbing mechanism for port gantry crane is characterized by: Cover shells (102) adapted to cover the first pulley (202) are respectively fixedly connected outside the two side planes of the grab bucket (101); Replaceable foot pad assemblies are respectively arranged at the lower part of the two side planes of the grab bucket (101), and the foot pad assemblies include foot pads (103) adapted to engage with the side planes of the grab bucket (101), and the upper end surfaces of the foot pads (103) are fixedly connected with studs (104) screwed to the side planes of the grab bucket (101).

4. According to claim 3, a new type of bulk cargo mechanism for grabbing bucket of port gantry crane is characterized by: The linkage assembly comprises a gear box (204), a motor (205) is butt-jointedly mounted on the upper side of the gear box (204), second pulleys (206) corresponding to the first pulley (202) are butt-jointedly mounted on both ends of the gear box (204), and a belt (207) penetrating the housing (102) is commonly sleeved between the second pulley (206) and the first pulley (202) corresponding thereto; The middle portion of the upper surface of the grab bucket (101) is fixedly connected to a gear box (204).

5. According to claim 1, a new type of bulk cargo grabbing mechanism for port gantry crane is characterized by: The shaft sleeve assembly comprises a collar (303) fixedly sleeved on the transverse shaft (201), and a slide plate (304) with a hollow interior is fixedly connected to one side of the collar (303); gaps are left between the two ends of the slide plate (304) and the two side planes of the bucket (301); The two ends of the slide plate (304) are symmetrically fixed with blocking bars (305), and a blocking groove (306) is provided in the middle of the blocking bar (305) facing the slide plate (304); the blocking bar (305) is fixedly connected to the collar (303); the two ends of the blocking bar (305) facing the slide plate (304) are correspondingly fixed with the bucket (301); A connecting plate (307) that fits the horizontal axis (201) is fixedly connected between the end of the slide plate (304) facing the collar (303) and the bucket (301), the connecting plate (307) fits the blocking bar (305), and the blocking bar (305), the connecting plate (307) and the panel (203) are correspondingly engaged.

6. A new type of bulk cargo mechanism for grab bucket operation of a port portal crane according to claim 5, characterized in that: The bucket component (3) is provided with a paddle component (4), the paddle component (4) comprising a paddle (401) adapted to be inserted into the bucket (301), one end of the paddle (401) being fitted with the side arc surface of the bucket (301), a slot (402) adapted to be fitted with a card-connecting slide plate (304) being provided in the middle of the other end of the paddle (401), a slide rod (403) for slidingly plugging the slide plate (304) being fixedly connected in the slot (402), spring washers (404) being fixedly connected on both sides of the slide rod (403), and one end of the spring washers (404) away from the slide rod (403) being fixedly connected to the slide plate (304); Arc-shaped baffles (405) are fixedly connected to both sides of the other end of the shifting plate (401), and the baffles (405) are fitted to the sliding plate (304).

7. The novel bulk cargo mechanism for grab bucket operation of a port portal crane according to claim 6 is characterized by: A limiting component (5) is provided on the shifting plate component (4), the limiting component (5) comprising a flat plate (501), both ends of the flat plate (501) being in contact with the grab bucket (101), a connecting plate (502) being fixedly connected to the surface of the flat plate (501), the connecting plate (502) being adapted to be clamped between the ends of the two baffles (405) away from the shifting plate (401); Side plates (503) are fixedly connected to both sides of the flat plate (501), and a gravity roller (504) is fixedly connected to one end of the side plate (503) away from the flat plate (501).

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