Anti-leakage closing mechanism of grab bucket of ship unloader

Abstract

The utility model discloses an anti-leakage closing mechanism for grab buckets of ship unloaders, and particularly relates to the technical field of grab buckets of ship unloaders, which comprises two grab buckets, two fixing seats fixedly connected to the tops of the grab buckets, connecting rods rotatably connected to the outer sides of the fixing seats, a top frame hinged to the inner sides of the connecting rods, two hydraulic rods rotatably connected to the bottom of the top frame, and cross rods hinged to the bottoms of the hydraulic rods. Two connecting plates are rotationally connected to the outer side of the transverse rod, two fixing plates are fixedly connected to the outer side of the grab bucket, fixing pins are fixedly connected to one sides of the fixing plates, and sliding grooves are formed in the outer side of the grab bucket. According to the grab bucket, the first comb plate and the second comb plate which can rotate are adopted, when part of comb teeth are abraded, rapid adjustment and replacement can be achieved, the downtime is shortened, the distance between the interior and the exterior of the grab bucket is increased through the inclined attaching design of the triangular rods and the staggered matching of the protruding blocks and the grooves, and material leakage is effectively prevented; therefore, the leakproofness in the unloading process and the overall unloading efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of ship unloader grab technology, and more specifically, to a spill-proof closing mechanism for ship unloader grabs. Background Technology

[0002] A ship unloader is a specialized machine that uses continuous conveying machinery to lift bulk materials, or has self-retrieving capabilities, or is equipped with material handling and feeding devices, to continuously lift bulk materials out of the ship's hold, unload them onto the boom or frame, and transport them to the main conveyor system on shore. The grab bucket is the core component of the ship unloader, and ship unloaders generally use double-lobed grab buckets.

[0003] Existing grab buckets wear down after prolonged use, leading to poor closure. This can cause leaks when grabbing materials such as fine coal and sand, requiring the entire grab bucket to be replaced, which increases costs.

[0004] A search revealed a Chinese patent (CN217650733U) disclosing a grab bucket device for a ship unloader. This utility model involves installing a first insert on the left grab bucket and a second insert on the right grab bucket. The first and second inserts are connected to the left and right grab buckets respectively by several fixing bolts. During the long-term material grabbing process, the first and second inserts will inevitably wear down, causing gaps to appear when they close. At this time, the first or second insert can be removed by disassembling the fixing bolts, allowing for the replacement of either the first or second insert. This eliminates the need to replace the entire left and right grab buckets, saving costs.

[0005] However, in actual use, the overlapping edges of the grab buckets create significant pressure, leading to frequent replacements of inserts No. 1 and No. 2. This process requires the unloader to stop using the grab buckets, which significantly impacts unloading efficiency. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a spill-proof closing mechanism for the grab bucket of a ship unloader, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] The anti-spillage closing mechanism of the unloading machine grab bucket includes two grab buckets. Two fixed seats are fixedly connected to the top of each grab bucket. A connecting rod is rotatably connected to the outer side of each fixed seat. A top frame is hinged to the inner side of each connecting rod. Two hydraulic rods are rotatably connected to the bottom of each top frame. A crossbar is hinged to the bottom of each hydraulic rod. Two connecting plates are rotatably connected to the outer side of each crossbar. Two fixed plates are fixedly connected to the outer side of each grab bucket. A fixing pin is fixedly connected to one side of each fixed plate. A sliding groove is provided on the outer side of each grab bucket. A switching mechanism is fixedly connected to the bottom of each grab bucket. The switching mechanism includes two outer shells. The outer sides of the outer shells engage with the bottom of the grab bucket. A baffle is fixedly connected to the top of each outer shell. The outer shell has multiple fixed teeth fixedly connected to its inner side, and multiple limiting holes are provided on its inner side. Two turntables are rotatably connected to its inner side, and bolts are threadedly connected to the outer sides of the turntables. A rotating shaft is fixedly connected to the inner side of the turntable. Three comb plates are fixedly connected to the outer side of one of the rotating shafts, and three comb plates are fixedly connected to the outer side of the other rotating shaft. A sliding rod is fixedly connected to the outer side of the outer shell, and two rotating rods are rotatably connected to the outer side of the sliding rod. Bolts are threadedly connected to the inner side of the rotating rods, and one end of bolt is threadedly connected to the outer side of the grab bucket. The outer side of the sliding rod is slidably connected to the inner side of the sliding groove. A fitting mechanism is provided on the outer side of the grab bucket.

[0009] By adopting the above technical solution: the two grabs can grab materials by deflecting in opposite directions, and the bottom of the grabs is double-sealed by the baffles inside the two shells and the three sets of comb plates one and two. The positions of the three sets of comb plates one and two can be rotated and changed, so that the grabs can be quickly adjusted to maintain good closure.

[0010] As a further description of the above technical solution: the bonding mechanism includes multiple triangular rods, one side of which is fixedly connected to one side of the grab bucket, three protrusions are fixedly connected to one side of the triangular rod, and three grooves are provided on the other side of the triangular rod.

[0011] By adopting the above technical solution, the interlocking of triangular rods, protrusions and grooves ensures that the two grabs remain relatively closed after grabbing the material, thus preventing material spillage during unloading.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] 1. By setting up an adjustment mechanism, compared with the existing technology, the rotation adjustment of three sets of comb plates one and two allows for quick adjustment and replacement after one set of comb plates one and two wears out, enabling the grab bucket to be used quickly and improving the unloading continuity of the ship unloader grab bucket.

[0014] 2. By setting up a bonding mechanism, compared with the existing technology, the mutual tilting bonding of the triangular rods increases the distance between the two grabs from the inside to the outside. The interlacing of multiple protrusions and grooves reduces the leakage of material between the two grabs, thereby improving the unloading efficiency of the unloading ship grabs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the bottom structure of this utility model.

[0017] Figure 3 This is a partial schematic diagram of the connection between the grab bucket and the outer shell of this utility model.

[0018] Figure 4 This is a schematic diagram of the connection between the outer shell and the sliding rod of this utility model.

[0019] Figure 5 This is a partial schematic diagram of the connection between the grab bucket and the tilt angle of this utility model.

[0020] Figure 6 This is a partial schematic diagram of the connection between the turntable and the shaft of this utility model.

[0021] The attached diagram is labeled as follows: 1. Grab bucket; 2. Fixed base; 3. Connecting rod; 4. Top frame; 5. Hydraulic rod; 6. Crossbar; 7. Connecting plate; 8. Fixed plate; 9. Fixed pin; 10. Outer shell; 11. Bolt 1; 12. Baffle; 13. Fixed tooth; 14. Limiting hole; 15. Turntable; 16. Rotating shaft; 17. Comb plate 1; 18. Comb plate 2; 19. Sliding rod; 20. Rotating rod; 21. Bolt 2; 22. Triangular rod; 23. Protrusion; 24. Groove; 25. Slide groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] The embodiments disclosed in this application are as follows: Figure 1-6The anti-spillage closing mechanism of the unloading machine grab bucket shown includes two grab buckets 1. Two fixed seats 2 are fixedly connected to the top of the grab bucket 1. A connecting rod 3 is rotatably connected to the outer side of the fixed seat 2. A top frame 4 is hinged to the inner side of the connecting rod 3. Two hydraulic rods 5 are rotatably connected to the bottom of the top frame 4. A crossbar 6 is hinged to the bottom of the hydraulic rods 5. Two connecting plates 7 are rotatably connected to the outer side of the crossbar 6. Two fixed plates 8 are fixedly connected to the outer side of the grab bucket 1. A fixing pin 9 is fixedly connected to one side of each fixed plate 8. A sliding groove 25 is provided on the outer side of the grab bucket 1. A switching mechanism is fixedly connected to the bottom of the grab bucket 1. The switching mechanism includes two outer shells 10. The outer sides of the outer shells 10 are engaged with the bottom of the grab bucket 1. A baffle 12 is fixedly connected to the top of the outer shell 10. Multiple fixing teeth 13 are fixedly connected to the inner side of the outer shell 10. Multiple limiting holes 14 are provided on the inner side of the outer shell 10. Two turntables 15 are rotatably connected to the inner side of the outer shell 10. 5. Bolt 11 is threaded on the outside of the turntable 15. A rotating shaft 16 is fixedly connected to the inside of the turntable 15. Three comb plates 17 are fixedly connected to the outside of one of the rotating shafts 16, and three comb plates 18 are fixedly connected to the outside of the other rotating shaft 16. A sliding rod 19 is fixedly connected to the outside of the outer shell 10. Two rotating rods 20 are rotatably connected to the outside of the sliding rod 19. Bolt 21 is threaded on the inside of the rotating rod 20. One end of bolt 21 is threaded to the outside of the grab bucket 1. The outside of the sliding rod 19 is slidably connected to the inside of the slide groove 25. A fitting mechanism is provided on the outside of the grab bucket 1. Rotating the two turntables 15 drives the rotating shaft 16 and the corresponding comb plates 17 and 18 to rotate, so that the unused comb plates 17 and 18 rotate to the fitting surfaces of the two outer shells 10. Replacement and maintenance are convenient, and the grab bucket maintains the connection stability for unloading during long-term use.

[0024] Reference Figure 3 and Figure 5 As shown, the bonding mechanism includes multiple triangular rods 22. One side of the triangular rod 22 is fixedly connected to one side of the grab bucket 1. Three protrusions 23 are fixedly connected to one side of the triangular rod 22, and three grooves 24 are opened on the other side of the triangular rod 22. By using the inclined setting of the triangular rod 22, the distance between the two materials from the inside to the outside of the grab bucket 1 is increased. Through the interlacing of multiple protrusions 23 and grooves 24, the two grab buckets 1 have good anti-spillage performance.

[0025] The working principle of this utility model is as follows: When the unloader uses grab buckets to unload cargo, the grab buckets are first lowered into the cargo ship. Two hydraulic rods 5 are activated, driving the crossbar 6 and two connecting plates 7 to pull the two fixed plates 8 and fixed pins 9 on the top of the two grab buckets 1. Driven by the crossbar 6 and the two connecting plates 7, the two grab buckets 1 close around the connection point of the fixed seat 2 and the connecting rod 3. After the two outer shells 10 at the bottom of the two grab buckets 1 close together, the two rotating shafts 16 on the inner side of the two outer shells 10 and the corresponding comb plates 17 and 18 interlock. Simultaneously, the two baffles 12 on the top of the two outer shells 10 also move closer together, maintaining a small distance, so that the two grab buckets 1... The bottom is protected from spillage by two baffles 12 and intersecting comb plates 17 and 18. After the comb plates 17 and 18 wear out, the two bolts 11 on the outside of the two outer shells 10 are rotated out from the inside of the turntable 15 and the outer shell 10. Then the turntable 15 is rotated so that the turntable 15 can drive the two rotating shafts 16 to rotate and change the position of the corresponding comb plates 17 and 18. The unused comb plates 17 and 18 are rotated to the contact surface of the two outer shells 10. Then the bolts 11 are rotated back into the limiting holes 14 inside the turntable 15 and the outer shell 10 so that the two grabs 1 can continue to be used.

[0026] Meanwhile, when the grab buckets are in use, the two triangular rods 22 on one side of the two grab buckets 1 are fitted together, and the protrusions 23 and grooves 24 on the outer side of the two triangular rods 22 are interlocked to keep the two sides of the two grab buckets 1 in good fit, so as to complete the unloading of materials.

[0027] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0028] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spill-proof closing mechanism for a grab bucket of a ship unloader, comprising two grab buckets (1), characterized in that: The top of the grab bucket (1) is fixedly connected to two fixed seats (2). A connecting rod (3) is rotatably connected to the outside of the fixed seat (2). A top frame (4) is hinged to the inside of the connecting rod (3). Two hydraulic rods (5) are rotatably connected to the bottom of the top frame (4). A crossbar (6) is hinged to the bottom of the hydraulic rod (5). Two connecting plates (7) are rotatably connected to the outside of the crossbar (6). Two fixed plates (8) are fixedly connected to the outside of the grab bucket (1). A fixing pin (9) is fixedly connected to one side of the fixed plate (8). A sliding groove (25) is opened on the outside of the grab bucket (1). An adjustment mechanism is fixedly connected to the bottom of the grab bucket (1). A fitting mechanism is provided on the outside of the grab bucket (1).

2. The anti-spillage closing mechanism of the unloading machine grab bucket according to claim 1, characterized in that: The switching structure includes two outer shells (10), the outer side of the outer shell (10) is engaged with the bottom of the grab bucket (1), the top of the outer shell (10) is fixedly connected with a baffle (12), and the inner side of the outer shell (10) is fixedly connected with a plurality of fixing teeth (13).

3. The anti-spillage closing mechanism of the unloading machine grab bucket according to claim 2, characterized in that: The inner side of the outer shell (10) is provided with multiple limiting holes (14). Two turntables (15) are rotatably connected to the inner side of the outer shell (10). Bolt 1 (11) is threadedly connected to the outer side of the turntable (15). A rotating shaft (16) is fixedly connected to the inner side of the turntable (15). Three comb plates 1 (17) are fixedly connected to the outer side of one of the rotating shafts (16), and three comb plates 2 (18) are fixedly connected to the outer side of the other rotating shaft (16).

4. The anti-spillage closing mechanism of the unloading machine grab bucket according to claim 2, characterized in that: A sliding rod (19) is fixedly connected to the outside of the outer shell (10), and two rotating rods (20) are rotatably connected to the outside of the sliding rod (19).

5. The anti-spillage closing mechanism of the unloading machine grab bucket according to claim 4, characterized in that: The inner side of the rotating rod (20) is threaded with a bolt (21), one end of which is threaded to the outer side of the grab bucket (1), and the outer side of the sliding rod (19) is slidably connected to the inner side of the sliding groove (25).

6. The anti-spillage closing mechanism of the unloading machine grab bucket according to claim 1, characterized in that: The bonding mechanism includes multiple triangular rods (22), one side of which is fixedly connected to one side of the grab bucket (1).

7. The anti-spillage closing mechanism of the unloading machine grab bucket according to claim 6, characterized in that: Three protrusions (23) are fixedly connected to one side of the triangular rod (22), and three grooves (24) are opened on the other side of the triangular rod (22).

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