Ship unloading plant with double grab and telescoping conveyor

Abstract

The present application provides a ship unloading device with double grab buckets and telescopic conveying structure, comprising a shore bridge installed on a wharf, a first grab bucket top and a second grab bucket top respectively provided with a movable carrier and a U-shaped movable frame, the movable carrier and the U-shaped movable frame being slidably installed on a groove opened on a main beam of the shore bridge, and the movable carrier and the U-shaped movable frame being connected with a steel wire rope structure on the shore bridge; the conveying assembly comprising a side plate fixedly installed on an auxiliary beam; the conveying assembly being provided with a material inlet on one side, the material inlet being connected with a driving component; a receiving hopper being fixedly installed above the material inlet of the conveying assembly; the driving component being used to drive the material inlet of the conveying assembly and the receiving hopper to extend out of the wharf or retract into the wharf. The conveying assembly and the double grab buckets are cooperated to unload, the grab buckets only grab materials, and the conveying of the materials to the ground belt in the wharf is completed by the conveying assembly, so as to improve the unloading efficiency and avoid the movement of the grab buckets in and out of the wharf, thereby saving a large amount of time.

Description

Technical Field

[0001] This invention relates to the field of unloading equipment, and particularly to unloading equipment with a double grab bucket and a telescopic conveyor structure. Background Technology

[0002] After the cargo ship docks at the pier, it unloads the material using the unloading equipment on the pier. The grab bucket grabs the material and discharges it into the hopper on the ground, then it falls into the ground conveyor belt and is then transported away by the ground conveyor belt.

[0003] After the unloading grab grabs the material from the cargo ship, it moves on the main beam of the quay crane and enters the wharf to unload the material. However, during the unloading process, the unloading grab needs to move back and forth between the wharf and the wharf. This translational movement of the unloading grab wastes a lot of time and reduces unloading efficiency. In addition, most unloading equipment currently uses a single grab to grab the material, which further affects the unloading efficiency. Summary of the Invention

[0004] In order to solve the technical problem of poor unloading efficiency, the present invention provides a ship unloading device with a double grab bucket and a telescopic conveyor structure.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0006] This invention provides a ship unloading device with a double grab bucket and a telescopic conveyor structure, including a quay crane installed on a wharf, the quay crane having a main beam extending beyond the wharf; it also includes: a first grab bucket and a second grab bucket, the top of the first grab bucket and the top of the second grab bucket respectively having a movable carrier and a U-shaped movable frame, both of which are slidably installed in grooves formed on the main beam, and both the movable carrier and the U-shaped movable frame are connected to a wire rope structure on the quay crane; a dust-blocking assembly disposed within the groove; the U-shaped movable frame having a slot for the first grab bucket to pass through; and an auxiliary beam disposed on the quay crane and located within the wharf. The conveying assembly includes a side plate fixedly mounted on an auxiliary beam; a feed end is provided on one side of the conveying assembly, and a driving component is connected to the feed end; a conveying surface is provided on the top of the conveying assembly; a receiving hopper is fixedly mounted above the feed end of the conveying assembly; the driving component is used to drive the feed end of the conveying assembly and the receiving hopper to extend out of the dock or retract into the dock; a telescopic cover is attached to the conveying surface of the conveying assembly; one end of the telescopic cover is fixedly connected to the bottom side of the receiving hopper, and the other end of the telescopic cover is fixed to the side plate; a discharge hopper is connected to the telescopic cover; a ground belt conveyor is provided below the discharge hopper.

[0007] Preferably, a fixed base is fixedly installed in the groove, a guide rail is fixedly installed on the fixed base, and a walking component is provided on the guide rail; the walking component includes a connecting column; a base frame is fixedly installed at the bottom of the connecting column, a walking wheel is rotatably installed on the base frame, and the walking wheel is slidably connected to the guide rail; the top of the connecting column is fixed to a U-shaped movable frame and a movable carrier.

[0008] Preferably, the inlet end of the conveying assembly includes a movable seat; a slide is fixedly installed at the bottom of the movable seat, and the slide is slidably connected to a slide rail fixedly installed on the side plate; a first belt roller and a second belt roller are rotatably installed on the movable seat; a third belt roller, a fourth belt roller, a fifth belt roller, and a sixth belt roller are rotatably installed on the side plate; a conveyor belt is wound on the first belt roller, the second belt roller, the third belt roller, the fourth belt roller, the fifth belt roller, and the sixth belt roller; a motor is fixedly installed on the side plate, and the output shaft end of the motor is fixedly connected to the fifth belt roller; the receiving hopper is fixedly connected to the movable seat through a first fixed frame.

[0009] Preferably, the driving component includes an end frame; the end frame is fixedly connected to a side plate, at least one driving member is fixedly installed on one side of the end frame, the output end of the driving member is fixedly connected to an end seat, and the end seat is fixedly connected to a movable seat.

[0010] Preferably, the telescopic cover includes an inner cover and an outer cover; both the outer cover and the inner cover have openings at the bottom, one end of the inner cover is fixedly connected to one side of the bottom of the receiving hopper, the outer cover is fixed to the side plate by a second fixing bracket, both the inner cover and the outer cover have openings at the bottom, the outer cover is slidably sleeved onto the outer wall of the inner cover, and the end of the inner cover inside the outer cover is also open.

[0011] Preferably, the end of the outer cover away from the receiving hopper is fixedly connected to the discharge hopper, and the discharge hopper has openings on one side and at the bottom. The side opening of the discharge hopper is fitted to the conveyor belt between the fourth belt roller and the fifth belt roller.

[0012] Preferably, the dust-blocking assembly includes four rollers, which are rotatably mounted at the four corners of the groove, and a shielding belt is wound around the four rollers. A groove is formed between the bottom of the fixing seat and the bottom surface of the groove. The bottom of the shielding belt passes through the groove. A baffle is fixedly mounted on the top of the main beam and covers the groove. A through groove is opened on the baffle. The connecting post passes through the shielding belt and the through groove, and the connecting post is fixedly connected to the shielding belt. The top surface of the shielding belt fits against the bottom surface of the baffle and blocks the through groove.

[0013] Preferably, the baffle plate has several evenly distributed oil outlet holes on its surface where it is attached to the shielding belt, and the oil outlet holes are connected to a cavity in the baffle plate, wherein the cavity is connected to an oil injection component.

[0014] Preferably, the oil injection assembly is located at one end of the groove. The oil injection assembly includes a fixing block fixedly installed in the groove, an oil injection cylinder fixedly installed on the fixing block, a piston connected to the oil injection cylinder, a stopper rod fixedly installed on the piston, and a hole opened in the stopper rod. A first spring is installed in the hole, and one end of the first spring abuts against the inner wall of one end of the oil injection cylinder. An end block is fixed at the end of the stopper rod outside the oil injection cylinder, and the end block faces the connecting column. A first one-way valve and a second one-way valve are installed at one end of the oil injection cylinder. The first one-way valve is connected to the cavity in the baffle through an oil injection pipe, and the second one-way valve is connected to an oil storage tank through an oil extraction pipe.

[0015] Preferably, an oil draining component is provided at the end of the groove away from the oil injection component, and the oil draining component includes a sealing plate; an oil draining hole communicating with the bottom of the groove is opened at the bottom of the main beam, the sealing plate covers the oil draining hole, and a movable rod is fixedly installed on the top of the sealing plate. The movable rod is L-shaped, and one side of the movable rod is elastically connected to one side wall of the groove through a second spring. The top of the movable rod has a transverse part, which is slidably connected to a groove opened in one side of the baffle, and one end of the transverse part extends into one end of the through groove.

[0016] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0017] The positive and progressive effects of this invention are as follows:

[0018] The aforementioned unloading equipment with dual grab buckets and a telescopic conveyor structure unloads materials through the cooperation of the conveyor assembly and the dual grab buckets. The grab buckets only grab the materials, while the conveyor assembly completes the material transport to the ground conveyor belt inside the dock, thereby improving unloading efficiency and avoiding the grab buckets moving inside and outside the dock, which wastes a lot of time. At the same time, a U-shaped movable frame is set on the second grab bucket, and the U-shaped movable frame has a slot for the first grab bucket to pass through, so that the first and second grab buckets alternately grab the materials in the cargo ship and discharge them into the receiving hopper without interfering with each other. Furthermore, the feeding end of the conveyor assembly and the receiving hopper are telescopic, which can extend outside the dock and close to the receiving hopper during use, and can be retracted into the dock after unloading. Furthermore, dust-proof components are set at the sliding guide positions of the U-shaped movable frame and the movable carrier to prevent dust and foreign objects from entering, so as not to affect the movement. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of the conveying component of the present invention when it extends outside the dock.

[0020] Figure 2 This is a schematic diagram of the overall structure of the conveying component of the present invention when it is retracted into the dock.

[0021] Figure 3 This is a schematic diagram of the structure of the first grab hopper, the second grab hopper, and the main beam of the present invention.

[0022] Figure 4 This is a schematic diagram of the structure at the top of the main beam of the present invention.

[0023] Figure 5 This is a schematic diagram of the groove and dust-blocking component of the present invention.

[0024] Figure 6 This is a schematic diagram of the walking component of the present invention.

[0025] Figure 7 This is a schematic diagram of the internal structure of the groove in this invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the interior of one end of the groove in this invention.

[0027] Figure 9 This is a schematic diagram of the structure of the baffle and oil injection assembly of the present invention.

[0028] Figure 10 This is a three-dimensional structural diagram of the conveying component of the present invention in its retracted state.

[0029] Figure 11 This is a three-dimensional structural diagram of the conveying component of the present invention in its extended state.

[0030] Figure 12 This is a schematic diagram of the planar structure of the conveying component of the present invention in its contracted state.

[0031] Figure 13 This is a schematic diagram of the planar structure of the conveying component of the present invention in its extended state.

[0032] Figure 14 This is a schematic diagram of the structure of the movable seat, slide, and slide rail of the present invention.

[0033] Figure 15 This is a schematic diagram of the structure of the driving component of the present invention.

[0034] Explanation of reference numerals in the attached figures

[0035] 1. Dock; 2. Cargo ship; 3. Quay crane; 4. Main beam; 401. Groove; 402. Oil drain hole; 5. First grab hopper; 6. Second grab hopper; 7. U-shaped movable frame; 8. Conveying assembly; 801. Side plate; 802. Movable seat; 803. Motor; 804. First belt roller; 805. Conveyor belt; 806. Second belt roller; 807. Third belt roller; 808. Fourth belt roller; 809. Fifth belt roller; 810. Sixth belt roller; 811. Slide seat; 812. Slide rail; 813. Scraper; 9. Receiving hopper; 10. Discharging hopper; 11. Ground belt conveyor; 12. Guide hopper; 13. First fixed frame; 14. Second fixed frame; 15. Telescopic cover; 1501. Inner cover; 1502. Outer cover; 16. Drive component; 1601. Drive component; 1602. End seat; 1603. End frame; 17. Movable carrier; 18. Baffle; 1801. Through groove; 1802. Slide groove; 1803. Oil outlet orifice; 19. Walking assembly; 1901. Connecting column; 1902. Base frame; 1903. Walking wheel; 20. Dustproof assembly; 2001. Roller; 2002. Shielding belt; 21. Fixed seat; 22. Guide rail; 23. Oil injection assembly; 2301. Fixed block; 2302. Oil injection cylinder; 2303. Plug rod; 2304. End block; 2305. Piston; 2306. First spring; 2307. First check valve; 2308. Second check valve; 2309. Oil injection pipe; 2310. Oil extraction pipe; 24. Movable rod; 25. Sealing plate; 26. Second spring. Detailed Implementation

[0036] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0037] like Figures 1-15 As shown, the unloading equipment, featuring a double grab bucket and a telescopic conveyor structure, includes a quay crane 3 installed on the dock 1, with a main beam 4 extending beyond the dock 1 on the quay crane 3; it also includes:

[0038] The first grab hopper 5 and the second grab hopper 6 are respectively provided with a movable frame 17 and a U-shaped movable frame 7 on the top of the first grab hopper 5 and the top of the second grab hopper 6. The movable frame 17 and the U-shaped movable frame 7 are slidably installed with the groove 401 opened on the main beam 4, and the movable frame 17 and the U-shaped movable frame 7 are connected to the wire rope structure on the quay crane 3.

[0039] Dust-blocking component 20, wherein the dust-blocking component 20 is disposed within the groove 401;

[0040] The U-shaped movable frame 7 is provided with a slot for the first grab hopper 5 to pass through; such as Figures 1-3As shown, when the first grab hopper 5 and the second grab hopper 6 move to the highest position, the first grab hopper 5 is at the same height as the empty slot in the U-shaped movable frame 7. When the two move along the length of the main beam 4, the first grab hopper 5 can pass through the empty slot, so that the two can alternately grab materials in the cargo ship 2 and discharge them into the receiving hopper 9 without interfering with each other.

[0041] The auxiliary beam is mounted on the quay crane 3 and is located inside the wharf 1; the auxiliary beam is connected to an additional support frame (not shown in the figure), and the support frame and the quay crane 3 are fixed together to the bottom traveling structure.

[0042] The conveying assembly 8 includes a side plate 801 fixedly installed on the auxiliary beam; a feeding end is provided on one side of the conveying assembly 8, and a driving component 16 is connected to the feeding end; a conveying surface is provided on the top of the conveying assembly 8.

[0043] The receiving hopper 9 is fixedly installed above the inlet end of the conveying assembly 8;

[0044] The driving component 16 is used to drive the feed end of the conveying assembly 8 and the receiving hopper 9 to extend out of the dock 1 or retract into the dock 1 together.

[0045] A telescopic cover 15 is attached to the conveying surface of the conveying assembly 8. One end of the telescopic cover 15 is fixedly connected to the bottom side of the receiving hopper 9, and the other end of the telescopic cover 15 is fixed to the side plate 801. A discharge hopper 10 is connected to the telescopic cover 15. A ground belt conveyor 11 is installed below the discharge hopper 10. A guide hopper 12 is installed on the side of the ground belt conveyor 11. The bottom end of the guide hopper 12 is located above the belt of the ground belt conveyor 11, and the top end of the guide hopper 12 is located directly below the discharge hopper 10. The material discharged from the discharge hopper 10 enters the guide hopper 12, and the guide hopper 12 guides the material onto the belt of the ground belt conveyor 11.

[0046] In practical implementation, the first grab hopper 5 and the second grab hopper 6 are connected by a wire rope structure, while a traveling structure is installed on the quay crane 3. The traveling structure is used to move the entire quay crane 3 along the shore of the wharf 1 and adjust the position of the quay crane 3 in the length direction of the cargo ship 2. After the cargo ship 2 docks, the first grab hopper 5 and the second grab hopper 6 are moved up and down by the wire rope structure, so that the first grab hopper 5 and the second grab hopper 6 can enter the cargo ship 2 to grab materials, and after grabbing materials, they can return to the high position. At the same time, the wire rope structure is also used to move the first grab hopper 5 and the second grab hopper 6 along the length direction of the main beam 4, adjust the position of the first grab hopper 5 and the second grab hopper 6 in the width direction of the cargo ship 2, and grab materials at different width positions.

[0047] The design incorporates a double-hopper system: a conveyor assembly 8 is added to work with the first grab hopper 5 and the second grab hopper 6. During unloading from the cargo ship 2, the inlet end of the conveyor assembly 8 and the receiving hopper 9 extend beyond the dock 1, close to the unloading positions of the first grab hopper 5 and the second grab hopper 6 at a width relative to the cargo ship 2. After grabbing the material, the first grab hopper 5 and the second grab hopper 6 do not need to move into the dock 1 for unloading. Figure 1 As shown, the material can be directly discharged into the receiving hopper 9, and the conveying component 8 will transport the material to the ground belt conveyor 11 to improve the unloading efficiency.

[0048] After unloading is completed, the inlet end of the conveying component 8 and the receiving hopper 9 are retracted together into the dock 1 by the drive component, as shown below. Figure 2 As shown.

[0049] like Figure 7 As shown, a fixed base 21 is fixedly installed in the groove 401, a guide rail 22 is fixedly installed on the fixed base 21, and a walking component 19 is provided on the guide rail 22; the walking component 19 includes a connecting column 1901; a base frame 1902 is fixedly installed at the bottom of the connecting column 1901, a walking wheel 1903 is rotatably installed on the base frame 1902, and the walking wheel 1903 is slidably connected to the guide rail 22; the top of the connecting column 1901 is fixed to the U-shaped movable frame 7 and the movable carrier 17.

[0050] When the wire rope structure drives the U-shaped movable frame 7 and the movable carrier 17 to move on the main beam 4, the two roll on the guide rail 22 through the traveling wheels 1903 of the traveling assembly 19, which provides guidance for the movement.

[0051] like Figures 10-14 As shown, the feeding end of the conveying assembly 8 includes a movable seat 802; a slide 811 is fixedly installed at the bottom of the movable seat 802, and the slide 811 is slidably connected to a slide rail 812 fixedly installed on the side plate 801; a first belt roller 804 and a second belt roller 806 are rotatably installed on the movable seat 802; a third belt roller 807, a fourth belt roller 808, a fifth belt roller 809, and a sixth belt roller 810 are rotatably installed on the side plate 801; a conveyor belt 805 is wound around the first belt roller 804, the second belt roller 806, the third belt roller 807, the fourth belt roller 808, the fifth belt roller 809, and the sixth belt roller 810; a motor 803 is fixedly installed on the side plate 801, and the output shaft end of the motor 803 is fixedly connected to the fifth belt roller 809; the receiving hopper 9 is fixedly connected to the movable seat 802 through a first fixed frame 13.

[0052] The grab bucket moves above the receiving bucket 9 and discharges material into the receiving bucket 9. The material falls onto the conveyor belt 805 on the feeding end, that is, the conveyor belt 805 on the side of the first belt roller 804 near the dock 1.

[0053] The conveyor belt 805 located between the first belt roller 804 and the fifth belt roller 809 constitutes the conveying surface of the conveying assembly 8. The material falls onto the conveyor belt 805 on the side of the first belt roller 804 near the dock 1. The motor 803 drives the fifth belt roller 809 to rotate. Together with the first belt roller 804, the conveyor belt 805, the second belt roller 806, the third belt roller 807, the fourth belt roller 808, the fifth belt roller 809, and the sixth belt roller 810, they form a belt drive, which causes the conveyor belt 805 to transport the material towards the discharge hopper 10. After the material enters the discharge hopper 10, it is discharged from the bottom of the discharge hopper 10 and enters the ground belt conveyor 11.

[0054] Among them, a scraper 813 is attached to the outer side of the conveyor belt 805 between the fourth belt roller 808 and the sixth belt roller 810, such as Figures 12-13 As shown, when the conveyor belt 805 is conveying materials, the materials fall from the discharge hopper 10 onto the ground belt conveyor 11, and some materials will adhere to the conveyor belt 805. The conveyor belt 805 passes by the scraper 813, and the scraper 813 scrapes off the adhered materials to achieve removal.

[0055] like Figure 15 As shown, the driving component 16 includes an end frame 1603; the end frame 1603 is fixedly connected to the side plate 801, and at least one driving member 1601 is fixedly installed on one side of the end frame 1603. The output end of the driving member 1601 is fixedly connected to an end seat 1602, and the end seat 1602 is fixedly connected to the movable seat 802.

[0056] The drive unit 1601 can adopt any translational and telescopic drive form such as gear rack, hydraulic cylinder, air cylinder or traveling trolley.

[0057] The drive unit 1601 moves the movable seat 802, causing the movable seat 802 and the first belt roller 804 and second belt roller 806 on the movable seat 802 to extend outside or retract inside the dock 1. The drive unit 1601 causes the movable seat 802 to extend from the dock 1 by different lengths, adapting to the material grabbing needs of the first grabbing hopper 5 and the second grabbing hopper 6 at different width positions on the cargo ship 2, ensuring that the feeding end and the receiving hopper 9 are always close to the unloading position of the cargo ship 2. The slide rail 812 and the slide block 811 provide guidance for the movement of the movable seat 802.

[0058] like Figures 10-13As shown, the telescopic cover 15 includes an inner cover 1501 and an outer cover 1502; both the bottom of the outer cover 1502 and the inner cover 1501 are open, one end of the inner cover 1501 is fixedly connected to one side of the bottom of the receiving hopper 9, and the outer cover 1502 is fixed to the side plate 801 by the second fixing bracket 14. Both the bottom of the inner cover 1501 and the outer cover 1502 are open, and the outer cover 1502 is slidably sleeved onto the outer wall of the inner cover 1501, and the end of the inner cover 1501 located inside the outer cover 1502 is also open; the end of the outer cover 1502 away from the receiving hopper 9 is fixedly connected to the discharge hopper 10, and the discharge hopper 10 has openings on one side and at the bottom. The side opening of the discharge hopper 10 is attached to the conveyor belt 805 between the fourth belt roller 808 and the fifth belt roller 809.

[0059] When materials are conveyed on the conveyor belt 805, they are surrounded and blocked by the telescopic cover 15 to prevent them from falling off the edge of the conveyor belt 805 and to ensure that the materials are only conveyed into the discharge hopper 10.

[0060] like Figure 2 , Figure 10 as well as Figure 12 As shown, the inlet end of the conveying assembly 8 is in the retracted position within the dock 1, at which point the inner cover 1501 is retracted into the outer cover 1502; as Figure 1 , Figure 11 as well as Figure 13 As shown, the feed end of the conveying assembly 8 is extended outside the dock 1, and the inner cover 1501 extends from inside the outer cover 1502. The telescopic design of the telescopic cover 15 is used to accommodate the need for the feed end of the conveying assembly 8 to extend or retract to different positions.

[0061] like Figures 7-8 As shown, the dust-blocking assembly 20 includes four rollers 2001, which are rotatably mounted at the four corners of the groove 401. A shielding belt 2002 is wound around each of the four rollers 2001. A groove is formed between the bottom of the fixing seat 21 and the bottom surface of the groove 401. The bottom of the shielding belt 2002 passes through the groove. A baffle 18 is fixedly mounted on the top of the main beam 4, covering the groove 401. A through groove 1801 is formed on the baffle 18. A connecting post 1901 passes through the shielding belt 2002 and the through groove 1801, and is fixedly connected to the shielding belt 2002. The top surface of the shielding belt 2002 is in contact with the bottom surface of the baffle 18, and the shielding belt 2002 blocks the through groove 1801.

[0062] When the U-shaped movable frame 7 and movable carrier 17 move on the main beam 4, the traveling component 19 slides on the guide rail 22. The connecting column 1901 of the traveling component 19 drives the shielding belt 2002 to move, which will not hinder the movement of the U-shaped movable frame 7 and movable carrier 17. At the same time, the shielding belt 2002 always blocks the through groove 1801, which plays the role of preventing dust and preventing foreign objects from entering the groove 401. Foreign objects will not be between the traveling wheel 1903 and the guide rail 22, thus not hindering the travel guidance.

[0063] like Figure 9 As shown, the baffle 18 and the shielding belt 2002 are attached to a number of evenly distributed oil outlet holes 1803, and the oil outlet holes 1803 are connected to the cavity in the baffle 18, and the cavity is connected to the oil injection component 23.

[0064] like Figure 7 and Figure 9 As shown, the oil injection assembly 23 is disposed at one end of the groove 401. The oil injection assembly 23 includes a fixing block 2301 fixedly installed in the groove 401. An oil injection cylinder 2302 is fixedly installed in the fixing block 2301. A piston 2305 is connected in cooperation with the oil injection cylinder 2302. A stopper rod 2303 is fixedly installed in the piston 2305. A hole is opened in the stopper rod 2303. A first spring 2306 is disposed in the hole. One end of the first spring 2306 is... The piston rod 2303, which abuts against the inner wall of one end of the oil injection cylinder 2302, has an end block 2304 fixed at one end outside the oil injection cylinder 2302, with the end block 2304 facing the side of the connecting column 1901. A first one-way valve 2307 and a second one-way valve 2308 are installed at one end of the oil injection cylinder 2302. The first one-way valve 2307 is connected to the cavity inside the baffle 18 via an oil injection pipe 2309, and the second one-way valve 2308 is connected to an oil storage tank via an oil extraction pipe 2310. The oil storage tank is not shown in the diagram but can be fixed to the side wall of the main beam 4.

[0065] Lubricating oil can be injected into the cavity through the oil injection component 23. The lubricating oil is evenly distributed between the top of the baffle 18 and the shield belt 2002 through several oil outlet holes 1803, providing lubrication for the relative sliding between the shield belt 2002 and the baffle 18 and reducing wear.

[0066] The oil injection assembly 23 requires no external power; it automatically injects oil by pressing the end block 2304 with the connecting column 1901. When lubrication is needed, the connecting column 1901 moves closer to the oil injection assembly 23, and the connecting column 1901 presses and pushes the end block 2304, causing the stopper rod 2303 and piston 2305 to move together. The piston 2305 pushes the oil in the oil injection cylinder 2302, allowing the oil to enter the cavity through the first one-way valve 2307 and compressing the first spring 2306, thus completing the oil injection. After the oil filling is completed, the connecting column 1901 is removed from the oil filling assembly 23, the end block 2304 loses pressure, and the spring force of the first spring 2306 resets the plug rod 2303 and piston 2305. The oil filling cylinder 2302 is then drawn in, and the oil in the oil storage tank enters the oil filling cylinder 2302 through the oil extraction pipe 2310 and the second one-way valve 2308 in sequence, so that the oil filling cylinder 2302 is filled with oil for the next oil filling and lubrication.

[0067] like Figure 7 As shown, an oil drain assembly is provided at the end of the groove 401 away from the oil injection assembly 23. The oil drain assembly includes a sealing plate 25. An oil drain hole 402 communicating with the bottom of the groove 401 is opened at the bottom of the main beam 4. The sealing plate 25 covers the oil drain hole 402. A movable rod 24 is fixedly installed on the top of the sealing plate 25. The movable rod 24 is L-shaped. One side of the movable rod 24 is elastically connected to one side wall of the groove 401 through a second spring 26. The top of the movable rod 24 has a transverse part. The transverse part is slidably connected to a sliding groove 1802 opened in one side of the baffle 18. One end of the transverse part extends into one end of the through groove 1801.

[0068] In providing lubrication between the shielding belt 2002 and the baffle 18, some oil enters the groove 401. Excess oil is drained through the oil drain assembly. Specifically, the connecting post 1901 moves away from the oil injection assembly 23 and towards the oil drain assembly. The connecting post 1901 presses against the lateral portion of the movable rod 24, causing the movable rod 24 to move the sealing plate 25 and compress the second spring 26, opening the oil drain hole 402 for oil drainage. After drainage, the connecting post 1901 moves away from the oil drain assembly and separates from the movable rod 24. The elastic force of the second spring 26 resets the movable rod 24 and the sealing plate 25, resealing the oil drain hole 402.

[0069] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. Ship unloading equipment with double grabs and telescopic conveying structure, comprising a shore crane (3) mounted to a quay (1), said shore crane (3) being provided with a main beam (4) extending beyond the quay (1); characterized in that, Also include: The first grab bucket (5) and the second grab bucket (6) are respectively provided with a movable carrier (17) and a U-shaped movable frame (7) on the top of the first grab bucket (5) and the second grab bucket (6), the movable carrier (17) and the U-shaped movable frame (7) are slidably installed on the groove (401) opened on the main beam (4), and the movable carrier (17) and the U-shaped movable frame (7) are connected with the steel wire structure on the shore crane (3); The dust blocking assembly (20) is arranged in the groove (401); The U-shaped movable frame (7) is provided with a hollow slot for the first grab bucket (5) to pass through; The auxiliary beam is arranged on the shore crane (3) and located in the wharf (1); The conveying assembly (8) includes a side plate (801) fixedly installed on the auxiliary beam; one side of the conveying assembly (8) is provided with a feeding end, and the feeding end is connected with a driving member (16); the top of the conveying assembly (8) is provided with a conveying surface; The receiving hopper (9) is fixedly installed above the feeding end of the conveying assembly (8); The driving member (16) is used to drive the feeding end of the conveying assembly (8) and the receiving hopper (9) to extend out of the wharf (1) or retract into the wharf (1); The telescopic cover (15) is attached to the conveying surface of the conveying assembly (8); one end of the telescopic cover (15) is fixedly communicated with one side of the bottom of the receiving hopper (9), and the other end of the telescopic cover (15) is fixed with the side plate (801); the telescopic cover (15) is connected with the discharging hopper (10); the ground belt conveyor (11) is arranged below the discharging hopper (10); The fixed seat (21) is fixedly installed in the groove (401), the guide rail (22) is fixedly installed on the fixed seat (21), and the walking assembly (19) is arranged on the guide rail (22); the walking assembly (19) comprises a connecting column (1901); the bottom of the connecting column (1901) is fixedly installed with a chassis (1902), the chassis (1902) is rotatably installed with a walking wheel (1903), the walking wheel (1903) is slidably connected with the guide rail (22), and the top of the connecting column (1901) is fixed with the U-shaped movable frame (7) and the movable carrier (17); the dust blocking assembly (20) comprises four rollers (2001), the four rollers (2001) are rotatably installed at four corners of the groove (401), the shielding belt (2002) is arranged on the four rollers (2001), an interval groove is formed between the bottom of the fixed seat (21) and the bottom surface of the groove (401), the bottom of the shielding belt (2002) passes through the interval groove, the top of the main beam (4) is fixedly installed with the baffle (18), the baffle (18) covers the groove (401), the baffle (18) is provided with the through groove (1801), the connecting column (1901) passes through the shielding belt (2002) and the through groove (1801), and the connecting column (1901) is fixedly connected with the shielding belt (2002); the top surface of the shielding belt (2002) is attached to the bottom surface of the baffle (18), and the shielding belt (2002) blocks the through groove (1801); A plurality of uniformly distributed oil outlet holes (1803) are arranged on the plate surface, attached with the baffle (18) and the shielding belt (2002), the oil outlet holes (1803) are communicated with cavities arranged in the baffle (18), and the cavities are connected with the oil injection assembly (23); an oil discharge assembly is arranged in one end of the groove (401) away from the oil injection assembly (23), and the oil discharge assembly comprises a sealing plate (25); the bottom of the main beam (4) is provided with the oil discharge hole (402) communicated with the bottom of the groove (401), the sealing plate (25) covers the oil discharge hole (402), the top of the sealing plate (25) is fixedly installed with the movable rod (24), the movable rod (24) is L-shaped, one side of the movable rod (24) is elastically connected with one side wall of the groove (401) through the second spring (26), the top of the movable rod (24) has a transverse portion, the transverse portion is slidably connected with the sliding groove (1802) arranged in one side of the baffle (18), and one end of the transverse portion extends into one end of the through groove (1801).

2. Ship unloading equipment with double grab and telescopic conveying structure according to claim 1, characterized in that: The feeding end of the conveying assembly (8) comprises a movable seat (802); the bottom of the movable seat (802) is fixedly provided with a sliding seat (811), the sliding seat (811) is slidably connected with a sliding rail (812) fixed to a side plate (801), the movable seat (802) is rotatably provided with a first belt roller (804) and a second belt roller (806), the side plate (801) is rotatably provided with a third belt roller (807), a fourth belt roller (808), a fifth belt roller (809) and a sixth belt roller (810), the first belt roller (804), the second belt roller (806), the third belt roller (807), the fourth belt roller (808), the fifth belt roller (809) and the sixth belt roller (810) are provided with a conveying belt (805) wound thereon; the side plate (801) is fixedly provided with a motor (803), the output shaft end of the motor (803) is fixedly connected with the fifth belt roller (809); the receiving hopper (9) is fixedly connected with the movable seat (802) through a first fixing frame (13).

3. Ship unloading equipment with double grabs and telescopic conveying structure according to claim 2, characterized in that: The driving component (16) comprises an end frame (1603); the end frame (1603) is fixedly connected with the side plate (801), one side of the end frame (1603) is fixedly provided with at least one driving piece (1601), the output end of the driving piece (1601) is fixedly connected with an end seat (1602), and the end seat (1602) is fixedly connected with the movable seat (802).

4. The ship unloading apparatus having double grabs and telescopic conveying structure as claimed in claim 2 wherein: The telescopic cover (15) comprises an inner cover (1501) and an outer cover (1502); the bottom of the outer cover (1502) and the inner cover (1501) is open, one end of the inner cover (1501) is fixedly communicated with one side of the bottom of the receiving hopper (9), the outer cover (1502) is fixed with the side plate (801) through a second fixing frame (14), the bottom of the inner cover (1501) and the outer cover (1502) is open, the outer cover (1502) is slidably sleeved to the outer wall of the inner cover (1501), and the end of the inner cover (1501) located in the outer cover (1502) is also open.

5. Ship unloading apparatus having dual grabs and telescoping conveyor structure as claimed in claim 4 wherein: The end of the outer cover (1502) away from the receiving hopper (9) is fixedly communicated with the discharging hopper (10), the side and the bottom of the discharging hopper (10) are provided with openings, and the side opening of the discharging hopper (10) is attached to the conveying belt (805) between the fourth belt roller (808) and the fifth belt roller (809).

6. The ship unloading apparatus having double grabs and telescopic conveying structure as claimed in claim 1 wherein: The oil injection assembly (23) is arranged at one end of the groove (401), the oil injection assembly (23) comprises a fixed block (2301) fixedly installed in the groove (401), the fixed block (2301) is fixedly installed with an oil injection cylinder (2302), the oil injection cylinder (2302) is connected with a piston (2305) in a matched mode, the piston (2305) is fixedly installed with a plug rod (2303), a hole body is formed in the plug rod (2303), a first spring (2306) is arranged in the hole body, one end of the first spring (2306) is abutted to an inner wall of one end of the oil injection cylinder (2302), one end of the plug rod (2303) located outside the oil injection cylinder (2302) is fixedly installed with an end block (2304), one side of the end block (2304) faces the connecting column (1901), one end of the oil injection cylinder (2302) is installed with a first one-way valve (2307) and a second one-way valve (2308), the first one-way valve (2307) is connected with a cavity in the baffle (18) through an oil injection pipe (2309), the second one-way valve (2308) is connected with an oil storage tank through an oil pumping pipe (2310).

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