Dust suppression bulk ship hold discharge device

Abstract

The application discloses a dust-suppression bulk cargo ship warehouse unloading device, which comprises a feeding mechanism, a rotating mechanism, a rotating platform and a lifting support. The feeding mechanism is used for shoveling and turning over bulk cargo to a first conveying belt. The rotating mechanism is used for driving the first conveying belt to rotate and adjusting the inclination. The bulk cargo on the first conveying belt falls into a second conveying belt through a hopper of the rotating mechanism. The rotating platform is used for mounting the second conveying belt and the rotating mechanism for driving the first conveying belt. The lifting support is used for adjusting the height of the rotating platform, thereby changing the inclination of the first conveying belt. The rotating platform is mounted on the top of the lifting support. The second conveying belt is laid in the middle part of the rotating platform. The rotating mechanism is mounted at the feeding end of the second conveying belt. The bottom of the discharging end of the second conveying belt is provided with a configuration block. The discharging end of the first conveying belt is connected with the rotating mechanism. The feeding end of the first conveying belt is provided with the feeding mechanism.

Description

Technical Field

[0001] This invention belongs to the field of unloading and bulk material conveying technology, specifically relating to a dust-suppressing bulk material unloading device for ship holds. Background Technology

[0002] Bulk cargo refers to powdery, granular, or lumpy solid cargo transported by ship, which can be loaded and unloaded directly without packaging.

[0003] Small transport ships typically use a V-shaped hull with a conveyor belt installed at the bottom. During unloading, materials fall onto the conveyor belt by gravity and are carried out of the hold. Medium and large transport ships, to increase transport capacity, all adopt a U-shaped hold (shaped like a truck bed).

[0004] Currently, there are two types of bulk unloading methods for U-shaped ship holds. One type is the ship crane / shore crane-conveyor system, which uses ship crane booms or shore crane grabs to lift cargo into the hopper and then conveys it to the storage yard. The other type is the continuous unloading method, which uses equipment such as chain buckets, pneumatic conveyors, and screw unloaders to achieve continuous material handling, lifting, and conveying.

[0005] In the specific unloading process, it is necessary to select the appropriate unloading method according to the characteristics of different bulk materials. For example, although the ship crane / shore crane-conveyor system is widely applicable, it is easy to generate dust and pollute the environment when lifting powdery or granular bulk materials, and additional cleaning equipment is required, such as hoisting a loader to the bottom of the ship's hold to clean up the remaining material at the bottom of the hold. For continuous unloading, special mechanical equipment is used to continuously transport bulk materials from the ship to the dock. Different types of unloading methods need to be selected according to different materials, including chain bucket, screw, pneumatic, and bucket wheel unloading, etc. This results in high equipment investment costs, requires special material handling and conveying systems, has limited material adaptability, and is inefficient. Continuous processes need to be matched with dock conveyor belt systems, which places high demands on port infrastructure. Pneumatic conveying systems are limited in use and are suitable for powdery bulk materials. They are also prone to generating dust during use, and are difficult to unload effectively if the material has high moisture content. Finally, special unloading machinery for ships is expensive and its use is relatively limited. The inventors searched prior art document 1 (CN114194871B) and disclosed a bidirectional mobile ship loader and its loading method, specifically disclosing that the ship loader moves in the X and Y axes through orthogonally arranged traveling wheels. It is equipped with counterweights, cantilever conveyors, and other mechanisms, but loading is achieved by adjusting the cantilever conveyor; unloading is not possible. Summary of the Invention

[0006] For the unloading process of large U-shaped ship holds, this invention is the first to adopt a conveyor belt system, and designs devices for rotating conveyor belts, conveyor belt inclination adjustment, and feed hopper angle adjustment. This enables large-capacity dust-suppressed unloading and conveying of bulk materials from the ship hold, ensuring no dead corners for material accumulation in the U-shaped hold and allowing for the cleaning of materials at the bottom of the hold. The unloading process reduces dust, has a certain dust prevention effect, and has high unloading efficiency.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A dustproof bulk cargo hold unloading device, characterized in that: the unloading device comprises: The feeding mechanism is used to scoop up material and flip the bulk material onto the first conveyor belt; A rotating mechanism is used to drive the first conveyor belt to rotate horizontally and adjust the vertical inclination of the first conveyor belt. The bulk material of the first conveyor belt falls into the second conveyor belt through the funnel of the rotating mechanism. A rotating platform for mounting the second conveyor belt and the rotating mechanism for driving the first conveyor belt; The lifting support is used to adjust the height of the rotating platform, thereby changing the inclination of the first conveyor belt; A rotating platform is installed on the top of the lifting support. A second conveyor belt is laid in the middle part of the rotating platform. A rotating mechanism is installed at the feeding end of the second conveyor belt, and a configuration block is provided at the bottom of the discharging end of the second conveyor belt. The discharging end of the first conveyor belt is connected to the rotating mechanism, and a feeding mechanism is installed at the feeding end of the first conveyor belt.

[0008] Furthermore, the lifting support includes a frame, the top of the frame is driven by a hydraulic cylinder or a pneumatic cylinder to lift and lower a support platform, a slewing support mechanism is installed on the support platform, and tracks are installed at the bottom of the frame.

[0009] Furthermore, the rotating platform is mounted on the slewing support mechanism, a frame is mounted on the rotating platform, a configuration block is mounted on one end of the rotating platform, and a rotating mechanism is mounted on the other end.

[0010] Furthermore, the rotating mechanism includes a first conveyor belt rotator, which is mounted on a rotating platform above and below by a rotary support. The first conveyor belt rotator is connected to a first conveyor belt, and the inclination of the first conveyor belt is adjusted by a hydraulic push rod.

[0011] Furthermore, the first conveyor belt rotating body is in the form of a frustum frame, and a funnel is installed inside the frustum frame. The first conveyor belt rotating body sits on a rotary support frame with a notch via a rotary support, and the second conveyor belt is placed into the notch of the rotary support frame.

[0012] Furthermore, the feeding mechanism includes a dust cover and a feeding box frame, with the dust cover installed on the feeding box frame for dust prevention.

[0013] Furthermore, the bottom of the feed box frame is equipped with a shovel, and the middle is equipped with a tipping bucket. The feed box frame is connected to the front bucket support by the upper and lower rotating shafts and the left and right swinging shafts. The feed box frame can be swinged left and right or flipped upward by stretching.

[0014] Furthermore, the dust cover includes a corrugated cover body, which is fixed on several shafts. The shafts are mounted on the protective cover shaft of the feed box frame through support frames on both sides, and the dust cover can be opened and closed by stretching.

[0015] Furthermore, the stretching is guided by pulleys.

[0016] Furthermore, both the feeding mechanism and the rotating mechanism are equipped with a drive structure, which includes a motor, a power gear, and a motor bracket.

[0017] The above technical solution can achieve the following beneficial effects: This invention is used for unloading cargo from ships at docks, and is more suitable for unloading bulk materials, which is convenient, fast, and cost-effective.

[0018] The movable lifting support in this invention can flexibly change the unloading position. For large cargo ships, the movable unloading device can increase the flexibility of the unloading equipment. Its lifting function can be adjusted accordingly as the cargo ship floats up after unloading.

[0019] In this invention, the feeding mechanism can not only smoothly feed materials, but also prevent dust. The rotating platform can rotate the first conveyor belt at multiple angles to meet the unloading needs of different positions and inclinations.

[0020] For the feeding mechanism, the operator can swing the feeding box frame, flip it up and down, and prevent dust by operating the stretching mechanism. Attached Figure Description

[0021] Figure 1 It is a three-dimensional diagram of the device.

[0022] Figure 2 This is a partial schematic diagram of the front of the feeding mechanism.

[0023] Figure 3 This is a partial schematic diagram of the rear of the feeding mechanism.

[0024] Figure 4 This is a structural diagram of the feeding mechanism.

[0025] Figure 5 This is the front view of the device.

[0026] Figure 6 This is a partial view of the rotating mechanism.

[0027] Figure 7 yes Figure 6Diagram of the power unit of the rotating mechanism.

[0028] Figure 8 This is a diagram of the power section of the slewing support mechanism.

[0029] Figure 9 This is a top-down view of the unloading device during the unloading process.

[0030] In the picture: 1. Lifting support; 2. Rotating mechanism; 3. Rotating platform; 4. First conveyor belt; 5. Second conveyor belt; 6. Feeding mechanism; 7. Configuration block; 8. Track; 9. Frame; 10. Slewing support mechanism; 11. Chassis; 12. Upper chassis plate; 13. Lower chassis plate; 14. Hydraulic cylinder; 15. Support platform; 16. Hydraulic cylinder auxiliary guide column; 17. Motor bracket; 18. Motor; 19. Power gear; 21. Slewing body support plate; 22. Slewing support frame; 23. Lower slewing support; 24. First conveyor belt rotating body; 25. Upper slewing support; 26. Hydraulic push rod; 27. Hopper; 61. Protective cover; 62. Support rod; 63. Feed box frame; 64. Tipping bucket; 65. Opening and closing pull rope; 66. Up and down pull rope; 69. Left and right swing shaft; 70. Up and down rotating shaft; 71. Pulley; 72. Pulley bracket; 73. Left and right pull rope. Detailed Implementation

[0031] The invention will be further described below with reference to the accompanying drawings: like Figure 1-8 As shown, a dust suppression bulk material unloading device for a ship's hold includes a feeding mechanism 6 for shoveling material and turning the bulk material onto a first conveyor belt; The rotating mechanism 2 is used to drive the first conveyor belt 4 to rotate and adjust the inclination. The bulk material of the first conveyor belt falls into the second conveyor belt through the funnel of the rotating mechanism. The rotating platform 3 is used to mount the second conveyor belt 5 and the rotating mechanism that drives the first conveyor belt; The lifting bracket 1 is used to adjust the height of the rotating platform, thereby changing the inclination of the first conveyor belt; A rotating platform is installed on the top of the lifting support. A second conveyor belt is laid in the middle part of the rotating platform. A rotating mechanism is installed at the feeding end of the second conveyor belt. A configuration block 7 is provided at the bottom of the discharging end of the second conveyor belt. The discharging end of the first conveyor belt is connected to the rotating mechanism, and a feeding mechanism is installed at the feeding end of the first conveyor belt.

[0032] The lifting support 1 includes a frame 11, with tracks 8 installed under the frame, an upper frame plate 12 on the top of the frame, and a lower frame plate 13 at the bottom of the frame. Several hydraulic cylinders 14 are evenly arranged on the upper frame plate 12, and a support platform 15 is installed on the top of the hydraulic cylinders. A slewing support mechanism 10 is installed on the top of the support platform 15, and hydraulic cylinder auxiliary guide columns 16 are installed between the support platform 15, the upper frame plate 12, and the lower frame plate 13.

[0033] The rotating platform 3 is a frame platform. A configuration block 7 is installed on the lower left side of the frame platform, and a rotating mechanism 2 is installed on the upper right side of the frame platform. A second conveyor belt 5 is laid in the middle part of the frame platform. In order to increase the stability of the rotating platform and effectively fix the rotating mechanism 2, a frame 9 is added above the frame platform. The frame and the frame platform together fix the rotating mechanism 2.

[0034] The rotating mechanism 2 includes a rotating support plate 21 located on the rotating platform 3. A rotating support frame is installed on the rotating support plate 21. The rotating support frame 22 has a notch into which the second conveyor belt 5 extends. A lower rotating support 23 is installed above the rotating support frame 22. A first conveyor belt rotating body 24 is installed above the lower rotating support 23. The top of the first conveyor belt rotating body 24 is connected to the frame 9 through an upper rotating support 25. The first conveyor belt rotating body 24 is a frustum frame. A funnel 27 is installed inside the frustum frame. The circumference of the frustum frame is provided with diagonal braces. The two sides of the first conveyor belt are fixed to the diagonal braces so that the discharge part of the first conveyor belt can fall smoothly into the funnel. One end of the hydraulic push rod 26 is hinged to the piston rod end of the first conveyor belt, and the other end of the hydraulic push rod 26 is hinged to the bottom of the first conveyor belt rotating body 24.

[0035] The feeding mechanism includes a pair of front bucket supports 68, each with supporting uprights mounted on both sides of the first conveyor belt. The two supporting uprights are fitted with vertical rotating shafts 70, with a left-right swing shaft 69 connected in the middle. The vertical rotating shafts 70 and the left-right swing shaft 69 are perpendicular to each other. The left-right swing shaft 69 is hinged to the feeding box frame 63, thus enabling the feeding box frame 63 to tilt vertically or swing left and right. The top of the feeding box frame 63 is equipped with vertical pull ropes 66, and left and right pull ropes 73 are installed on the left and right sides of the feeding box frame 63 respectively. A tipping bucket 64 is installed inside the feeding box frame 63, and a shovel 67 is installed at the bottom of the feeding box frame 63. The feeding end of the first conveyor belt is positioned above the shovel 67 and below the tipping bucket of the feeding box frame 63. A protective cover 61 is installed outside the feeding box frame 63, and an opening / closing pull rope 65 is installed on the protective cover 61. Specifically, the feeding box... A protective cover pivot is installed at the lower angle of the frame 63. Support rods 62 are installed at both ends of the protective cover pivot. The support rods 62 at both ends form a group. Several groups of support rods 62 are provided according to the specific structure. In this embodiment, three groups of support rods are used. One end of each group of support rods is installed at both ends of the protective cover pivot. An axle is provided between the other ends of each group of support rods. The cover body of the protective cover 61 is installed on the three axles. The protective cover 61 is retracted by pulling the opening and closing rope 65, and the protective cover 61 is unfolded by releasing the opening and closing rope 65. The cover body of the protective cover 61 is corrugated, which facilitates folding and unfolding.

[0036] Based on the structure of the above-described feeding mechanism embodiment, the pull rope is guided by the pulley 71, which is fixed by the pulley bracket 72. The shape of the pulley bracket 72 is not fixed, as long as it conforms to the guiding direction of the up and down pull rope 66, the left and right pull rope 73, and the opening and closing pull rope 65. In this embodiment, the two left and right pull ropes 73 are specifically arranged on both sides of the first conveyor belt. One end of the two left and right pull ropes 73 is fixed to the left and right sides of the feeding box frame 63, respectively, and the direction is reversed by the pulley 71. The pulley 71 is installed on the L-shaped pulley bracket 72, which is arranged on both sides of the first conveyor belt. For example, if the right left and right pull rope 73 is pulled, under the guidance of the pulley 71, and with the cooperation of the left and right swing shaft 69 and the hinge structure, the entire feeding box frame 63 rotates to the right.

[0037] The left and right pull ropes control the angle of the feeding mechanism relative to the first conveyor belt, requiring the feeding mechanism to be parallel to the length of the ship (parallel to the shore). Only one pull rope is needed for the up and down flipping pull rope, the purpose of which is to control the feeding mechanism to feed horizontally, because as the feeding mechanism descends, the inclination angle of the first conveyor belt changes, and if the up and down angle of the feeding mechanism is not controlled to keep it horizontal, the feeding efficiency will be reduced.

[0038] H-shaped pulley brackets are installed on both sides of the first conveyor belt, with two pulleys installed above them to guide the opening and closing pull rope 65 and the up and down pull rope 66, respectively. That is, when the up and down pull rope 66 is pulled, the feed box frame 63 rotates upward based on the up and down rotating shaft 70.

[0039] In the above embodiments, the control of the pull rope can be done manually or through a take-up reel, servo motor and control system.

[0040] The first conveyor belt can swing up and down under the action of hydraulic push rods, changing its inclination. With the cooperation of the rotating body and slewing support, the first conveyor belt can rotate 180 degrees. The feeding mechanism at the front end of the first conveyor belt can swing left and right under the action of left and right pull ropes, and can flip up and down under the action of up and down pull ropes. Because the first conveyor belt is relatively long, a counterweight is added behind the rotating platform 3. As the ship unloads, its weight continuously decreases, and the entire hull floats. This device can rise and fall under the action of the hydraulic cylinders of the lifting support, and can also rotate 180 degrees under the action of the slewing support structure on the lifting support. The ship's cargo enters the first conveyor belt through the feeding mechanism, then reaches the second conveyor belt through the discharge hopper, and after further processing, enters the designated location. This device is equipped with a tracked walking device, which runs smoothly and adapts to complex terrain. The device is also equipped with auxiliary devices for the main engine to facilitate the coordination of the main engine's movement. The feeding mechanism consists of a feeding box frame, a shovel, a material tipping bucket, an openable protective cover, a protective cover opening and closing pull rope, an up-and-down swing shaft, a left-and-right swing shaft, a left-and-right swing pull rope, and an up-and-down swing pull rope. It enables the head feeding mechanism to move flexibly up, down, left, and right. The protective cover can be opened and closed flexibly under the action of the pull rope. When the feeding mechanism extends to the designated position, the shovel scoops up the material, and the material tipping bucket flips the material onto the conveyor belt. The openable protective cover has a dustproof effect.

[0041] In this embodiment, the auxiliary devices of the host include equipment for transporting and unloading the first conveyor belt. Because the first conveyor belt is relatively long, such as 30 meters, it is difficult to transport and unload manually, so other auxiliary devices are needed. However, this part is not a necessary technology in this embodiment, but is only used to explain that the transport and unloading of the first conveyor belt can be carried out with the help of existing auxiliary devices.

[0042] Based on the above embodiments, Figure 6 and 7 As shown, the external gear of the lower slewing support 23 meshes with the drive gear 19. The drive gear 19 is mounted on the output end of the motor 18, and the motor is mounted on the motor bracket 17. The motor drives the lower slewing support 23 to rotate, thereby rotating the rotating body 24. Similarly, Figure 8 As shown, the slewing support mechanism 10 is augmented with a power gear 19, a motor 18, and a motor bracket 17. It should be noted that the tipping bucket also requires a corresponding drive mechanism, which can be a motor or other drive method, as determined by those skilled in the art based on the specific circumstances.

[0043] Based on the above embodiments, both the first conveyor belt and the second conveyor belt are wrapped by an external enclosed cover to achieve dust suppression.

[0044] Specific usage instructions: After the loaded bulk cargo ship docks, the unloading device moves to the vicinity of the cargo ship via tracks. It adjusts the height according to the height of the cargo ship to determine a suitable height. Then, the slewing support mechanism 10 rotates, turning one end of the rotating mechanism 2 on the rotating platform 3 above the ship's side. This allows the rotating mechanism 2 and the first conveyor belt to move over a wider range. The feeding mechanism in front of the first conveyor belt is placed on the bulk cargo of the cargo ship and begins to lower the protective cover. The shovel and tipper work together to flip the bulk cargo onto the first conveyor belt. After passing through the funnel of the rotating body, the bulk cargo is transferred to the second conveyor belt and transported to the rear.

[0045] The unloading process needs to be based on the location of the bulk materials. Figure 9 As shown, the operator or the control system controls the first conveyor belt to be parallel to the vertical plane along the length of the ship's hold, i.e. Figure 9 In state A of the first conveyor belt, the inclination angle of the first conveyor belt is controlled according to a suitable unloading angle, so that the feeding mechanism contacts the surface of the bulk material. The direction of the feeding mechanism is changed by controlling the pull rope to ensure that the feeding mechanism feeds horizontally along the direction of the ship's hull. As the bulk material is fed, the unloading device is controlled to move horizontally along the length of the ship's hold to achieve continuous feeding.

[0046] When the cargo ship floats due to the weight reduction caused by unloading, the corresponding lifting part needs to be raised. The rotating mechanism 2 is used to change the range of motion of the first conveyor belt, while the hydraulic push rod is used to change the tilt angle. For example, when unloading bulk materials near or away from the rotating platform 3, the tilt angle needs to be changed.

[0047] In the above-described usage, the inclination angle of the first conveyor belt needs to be adjusted during unloading. If the inclination angle is large, baffles need to be added to the first conveyor belt. For a ship's hold measuring 50 meters long, 20 meters wide, and 20 meters deep, based on the equipment parameters, the inclination angle of the first conveyor belt is determined to be within the range of 4.6 degrees to 40.293 degrees. At larger angles and with baffles, the conveying efficiency will decrease. At 40.293 degrees, the conveying efficiency is 52.9% of the designed conveying capacity.

[0048] In the above usage method, the first conveyor belt can be controlled to unload materials one by one in a fan shape, that is, the first conveyor belt starts from... Figure 9 As A gradually rotates, it passes through states B, C, and D to achieve fan-shaped unloading. For areas outside the fan shape, the unloading device can be moved to unload again. The specific unloading method and steps are not limited to specific characteristics.

[0049] The above descriptions are all preferred embodiments of the present invention. For those skilled in the art, any modifications to the present invention in various equivalent forms without departing from the principle of the present invention shall fall within the protection scope of the appended claims.

Claims

1. A dust-suppressing bulk cargo ship unloading device, characterized in that: The unloading device includes: The feeding mechanism is used to scoop up material and flip the bulk material onto the first conveyor belt; A rotating mechanism is used to drive the first conveyor belt to rotate horizontally and adjust the vertical inclination of the first conveyor belt. The bulk material of the first conveyor belt falls into the second conveyor belt through the funnel of the rotating mechanism. A rotating platform for mounting the second conveyor belt and the rotating mechanism for driving the first conveyor belt; The lifting support is used to adjust the height of the rotating platform, thereby changing the inclination of the first conveyor belt; A rotating platform is installed on the top of the lifting support. A second conveyor belt is laid in the middle part of the rotating platform. A rotating mechanism is installed at the feeding end of the second conveyor belt, and a configuration block is provided at the bottom of the discharging end of the second conveyor belt. The discharging end of the first conveyor belt is connected to the rotating mechanism, and a feeding mechanism is installed at the feeding end of the first conveyor belt.

2. The dust suppression bulk material unloading device for a ship's hold according to claim 1, characterized in that: The lifting support includes a frame, the top of which is driven by a hydraulic cylinder or a pneumatic cylinder to lift and lower a support platform, a slewing support mechanism is installed on the support platform, and tracks are installed at the bottom of the frame.

3. A dust suppression bulk cargo unloading device according to claim 1 or 2, characterized in that: The rotating platform is mounted on the slewing support mechanism. A frame is installed on the rotating platform, a configuration block is installed at one end of the rotating platform, and a rotating mechanism is installed at the other end.

4. The dust suppression bulk material unloading device for a ship's hold according to claim 1, characterized in that: The rotating mechanism includes a first conveyor belt rotator, which is mounted on a rotating platform above and below by a rotary support. The first conveyor belt rotator is connected to a first conveyor belt, and the inclination of the first conveyor belt is adjusted by a hydraulic push rod.

5. The dust suppression bulk material unloading device for a ship's hold according to claim 4, characterized in that: The first conveyor belt rotating body is in the form of a frustum frame, and a funnel is installed inside the frustum frame. The first conveyor belt rotating body sits on a rotary support frame with a notch via a rotary support, and the second conveyor belt is placed into the notch of the rotary support frame.

6. The dust suppression bulk material unloading device for a ship's hold according to claim 1, characterized in that: The feeding mechanism includes a dust cover and a feeding box frame. The dust cover is installed on the feeding box frame to prevent dust.

7. The dust suppression bulk material unloading device for a cargo hold according to claim 6, characterized in that: The bottom of the feed box frame is equipped with a shovel, and the middle is equipped with a tipping bucket. The feed box frame is connected to the front bucket support by the upper and lower rotating shafts and the left and right swinging shafts. The feed box frame can be swinged left and right or flipped upward by stretching.

8. A dust suppression bulk material unloading device for a cargo hold according to claim 6, characterized in that: The dust cover includes a corrugated cover body, which is fixed on several shafts. The shafts are mounted on the protective cover shaft of the feed box frame through support frames on both sides. The dust cover can be opened and closed by stretching.

9. A dust-suppressing bulk cargo ship unloading device according to claim 7 or 8, characterized in that: The stretching is guided by pulleys.

10. A dust-suppressing bulk cargo ship unloading device according to claim 1, characterized in that: Both the feeding mechanism and the rotating mechanism are equipped with a drive structure, which includes a motor, a power gear, and a motor bracket.

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