Ore unloading device for port

Abstract

The utility model relates to the technical field of ore unloading, in particular to an ore unloading device for a port, and aims to solve the problem that fine goods such as iron powder are easy to leak from gaps when being grabbed by a grab bucket, the ore unloading device comprises a connecting block, and the top wall of the connecting block is connected with a hoisting rope; a supporting rod is installed on the bottom wall of the connecting block, the top end of the supporting rod is fixedly connected with the connecting block, a first grab bucket and a second grab bucket are arranged at the bottom end of the supporting rod, and the first grab bucket and the second grab bucket are rotationally connected with the supporting rod; a driving piece is installed on the connecting block, the end, away from the connecting block, of the driving piece is connected with the first grab bucket and the second grab bucket, and the driving piece is used for driving the first grab bucket and the second grab bucket to be close to each other or away from each other; and sealing pieces are arranged on the first grab bucket and the second grab bucket. The ore unloading device has the effect of reducing the scattering possibility of ore particles during unloading.

Description

Technical Field

[0001] This application relates to the technical field of ore unloading, and particularly to an ore unloading device for ports. Background Art

[0002] At present, with economic globalization, trade exchanges between countries are becoming increasingly frequent. Since railway transportation requires railways as a foundation and air transportation has a small transportation volume and high costs, international large-scale cargo transportation usually adopts shipping.

[0003] In the trade mode of shipping goods, ports are an indispensable part. Ships need to complete the loading and unloading of goods at ports, so ports need to be equipped with corresponding lifting equipment. Ore transportation is a major category of shipped goods. Ore goods need to be placed in the cargo holds of ships during transportation. When the ship arrives at the shore, the lifting equipment on the shore will use a grab to grab the ore in the cargo hold.

[0004] However, the bottom and side of a common grab are flush. After grabbing the goods, there will be a certain gap between the bottom and the side, resulting in easy leakage of fine goods such as iron powder from the gap when grabbing them, so it needs to be improved. Summary of the Utility Model

[0005] In order to reduce the occurrence of ore particle spillage during unloading, this application provides an ore unloading device for ports.

[0006] The ore unloading device for ports provided by this application adopts the following technical solutions:

[0007] An ore unloading device for ports includes a connecting block, the top wall of the connecting block is connected to a hoisting rope; a support rod is installed on the bottom wall of the connecting block, the top end of the support rod is fixedly connected to the connecting block, and the bottom end of the support rod is provided with a first grab and a second grab, the first grab and the second grab are respectively rotatably connected to the support rod; a driving member is installed on the connecting block, and the end of the driving member away from the connecting block is respectively connected to the first grab and the second grab, and the driving member is used to drive the first grab and the second grab to approach or move away from each other; sealing members are provided on the first grab and the second grab.

[0008] By adopting the above technical solution, the operator controls the crane to suspend the first grab bucket and the second grab bucket above the cargo hold containing ore. The driving member is started, and the driving member drives the first grab bucket and the second grab bucket to separate from each other and remain in an open state. The operator controls the crane to lower the connecting block until the bottoms of the first grab bucket and the second grab bucket contact the ore and sink into the ore pile under the action of gravity, and the ore fills the first grab bucket and the second grab bucket. The operator controls the driving member to drive the first grab bucket and the second grab bucket to approach each other, and the excess ore between the first grab bucket and the second grab bucket is extruded. Until the first grab bucket and the second grab bucket are completely fitted, the sealing member is clamped between the first grab bucket and the second grab bucket. After the first grab bucket and the second grab bucket are connected through the sealing member, the extension state of the hydraulic rod of the driving member is maintained, and the crane is controlled to transfer the ore to the designated unloading position. The setting of the sealing member can strengthen the connection between the first grab bucket and the second grab bucket, and it is difficult for the ore to fall from the gap between the first grab bucket and the second grab bucket. The situation of ore spilling during unloading is reduced.

[0009] Optionally, the sealing member includes a first rubber pad and a second rubber pad, and the first rubber pad and the second rubber pad are respectively installed on the side walls of the first grab bucket and the second grab bucket that are close to each other; the first grab bucket and the second grab bucket have the same shape and the same volume, and the side walls of the first rubber pad and the second rubber pad that are close to each other can abut against each other.

[0010] By adopting the above technical solution, the operator adhesively installs the first rubber pad and the second rubber pad on the side walls of the first grab bucket and the second grab bucket that are close to each other respectively, and the installation process is simple. When the driving member drives the first grab bucket and the second grab bucket to approach each other, the first rubber pad and the second rubber pad undergo elastic deformation and abut tightly against each other. If there are ore particles clamped between the first rubber pad and the second rubber pad, the first rubber pad and the second rubber pad at this place both undergo elastic deformation; the first rubber pad and the second rubber pad around this place still abut tightly against each other, reducing the situation of ore falling.

[0011] Optionally, the sealing member includes a third rubber pad and a fourth rubber pad, and the third rubber pad and the fourth rubber pad are respectively installed on the side walls of the first grab bucket and the second grab bucket that are close to each other; the cross section of the third rubber pad is convexly arranged, and a groove is formed on the side wall of the fourth rubber pad close to the third rubber pad, and the third rubber pad can be inserted into the groove.

[0012] Optionally, the cross section of the third rubber pad is a trapezoidal protrusion, and the groove of the fourth rubber pad cooperates with the protrusion of the third rubber pad; the diameter of the ore is smaller than the inner diameter of the groove.

[0013] By adopting the above technical solution, when the third rubber pad is completely inserted into the groove of the fourth rubber pad, the fourth rubber pad surrounds the outer wall of the convex part of the third rubber pad. Under the action of gravity, the ore presses the fourth rubber pad against the inclined top wall of the convex part of the third rubber pad. Since the friction between rubber and rubber is relatively large when they come into contact, it is difficult for the third rubber pad and the fourth rubber pad to separate. The situation where the third rubber pad and the fourth rubber pad are separated due to the extrusion of the ore in the first grab bucket and the second grab bucket is reduced. If there are ore particles sandwiched between the third rubber pad and the fourth rubber pad, at this time, the distance between the top of the third rubber pad and the top of the fourth rubber pad is smaller than the diameter of the ore particles, and it is difficult for the ore particles in the first grab bucket and the second grab bucket to continue to enter between the third rubber pad and the fourth rubber pad under the action of gravity. The situation of ore spilling is reduced.

[0014] Optionally, the seal includes a plurality of fifth rubber pads and elastic members. A straight groove is formed on the side wall of the second grab bucket close to the first grab bucket. A plurality of the fifth rubber pads are movably arranged in the straight groove, and each of the fifth rubber pads is connected to the inner wall of the straight groove by an elastic member; the side wall of the fifth rubber pad away from the elastic member can abut against the side wall of the first grab bucket close to the second grab bucket.

[0015] Optionally, the elastic member includes a sliding groove body, a sliding block and a spring. The sliding groove body is installed in the straight groove, the outer wall of the sliding groove body is attached to the inner wall of the straight groove, the spring is installed on the inner wall of the sliding groove body, and the spring is connected to the inner wall of the sliding groove body away from the first grab bucket; one end of the spring close to the first grab bucket is connected to the sliding block, the sliding block is always inserted into the sliding groove body and is slidably matched with the inner wall of the sliding groove body; the fifth rubber pad is installed on the side wall of the sliding block away from the spring; a plurality of the sliding groove bodies are arranged side by side in the straight groove, and the outer side walls in the length direction of the sliding groove body are attached to the outer side walls of adjacent sliding groove bodies; there is a gap between adjacent fifth rubber pads. The distance between adjacent fifth rubber pads is smaller than the diameter of the ore.

[0016] By adopting the above technical solution, when the spring is in a relaxed state, the end of the sliding block away from the spring extends out of the sliding groove body, but part of the sliding block still remains in the sliding groove body, reducing the occurrence of the sliding block falling off. When the fifth rubber pad starts to contact and be squeezed by the side wall of the first grab bucket, the sliding block moves towards the inside of the sliding groove body, and the spring starts to be compressed. The moving trajectories of the fifth rubber pad and the sliding block are parallel to the length direction of the sliding groove body, making it difficult to deviate in the horizontal or vertical directions. When the first grab bucket and the second grab bucket are closed, the fifth rubber pad is pressed tightly against the side wall of the first grab bucket. Since the gap between adjacent fifth rubber pads is smaller than the diameter of the ore particles, it is difficult for the ore particles to fall through this gap. If an ore particle is clamped between a certain fifth rubber pad and the side wall of the first grab bucket, the distance between the sliding block and the sliding groove body decreases, the elastic force of the spring squeezing the sliding block increases, and the sliding block squeezes the fifth rubber pad to undergo slight elastic deformation. The distance between this fifth rubber pad and the side wall of the first grab bucket is smaller than the diameter of the ore particles, and subsequent ore particles are difficult to enter between the fifth rubber pad and the side wall of the first grab bucket under the action of gravity. During the process of transferring the first grab bucket and the second grab bucket to the unloading location, this ore particle blocks the ore particles in the bucket from falling. The occurrence of ore particle spillage is reduced.

[0017] Optionally, the sliding groove body is detachably connected to the second grab bucket.

[0018] By adopting the above technical solution, when a certain elastic member needs to be replaced, the bolt connection between the sliding groove body and the second grab bucket is released for replacement, reducing the maintenance time.

[0019] Optionally, the material of the spring is selected as carbon steel.

[0020] By adopting the above technical solution, since the material of the spring is high-strength carbon steel, the service life of the spring is improved.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The operator controls the crane to suspend the first grab bucket and the second grab bucket above the cargo hold containing ore. The driving member is activated, and the driving member drives the first grab bucket and the second grab bucket to separate from each other and remain in an open state. The operator controls the crane to lower the connecting block until the bottoms of the first grab bucket and the second grab bucket come into contact with the ore and sink into the ore pile under the action of gravity, and the ore fills the first grab bucket and the second grab bucket. The operator controls the driving member to drive the first grab bucket and the second grab bucket to approach each other, and the excess ore between the first grab bucket and the second grab bucket is squeezed out. Until the first grab bucket and the second grab bucket are completely fitted together, the seal is clamped between the first grab bucket and the second grab bucket. After the first grab bucket and the second grab bucket are connected through the seal, the extension state of the hydraulic rod of the driving member is maintained, and the crane is controlled to transfer the ore to the designated unloading position. The setting of the seal can strengthen the connection between the first grab bucket and the second grab bucket, and it is difficult for the ore to fall from the gap between the first grab bucket and the second grab bucket. Reduce the occurrence of ore spilling during unloading;

[0023] 2. When the third rubber pad is completely inserted into the groove of the fourth rubber pad, the fourth rubber pad surrounds the outer wall of the protrusion of the third rubber pad. The ore presses the fourth rubber pad against the inclined top wall of the protrusion of the third rubber pad under the action of gravity. Due to the relatively large friction between rubber and rubber when they come into contact, it is difficult for the third rubber pad and the fourth rubber pad to separate. Reduce the occurrence of the separation of the third rubber pad and the fourth rubber pad due to the extrusion of the ore in the first grab bucket and the second grab bucket. If there are ore particles sandwiched between the third rubber pad and the fourth rubber pad, at this time, the distance between the top of the third rubber pad and the top of the fourth rubber pad is less than the diameter of the ore particles, and it is difficult for the ore particles in the first grab bucket and the second grab bucket to continue to enter the third rubber pad and the fourth rubber pad under the action of gravity. Reduce the occurrence of ore spilling;

[0024] 3. When the spring is in a relaxed state, the end of the sliding block away from the spring extends out of the sliding groove body, but part of the sliding block still remains inside the sliding groove body, reducing the occurrence of the sliding block falling off. When the fifth rubber pad starts to contact and be squeezed by the side wall of the first grab, the sliding block moves towards the inside of the sliding groove body, and the spring starts to be compressed. The moving trajectories of the fifth rubber pad and the sliding block are parallel to the length direction of the sliding groove body, and it is difficult to deviate in the horizontal or vertical direction. When the first grab and the second grab are closed, the fifth rubber pad is pressed tightly against the side wall of the first grab. Since the gap between adjacent fifth rubber pads is smaller than the diameter of the ore particles, it is difficult for the ore particles to fall through this gap. If there is an ore particle stuck between a certain fifth rubber pad and the side wall of the first grab, the distance between the sliding block and the sliding groove body decreases, the elastic force of the spring squeezing the sliding block increases, and the sliding block squeezes the fifth rubber pad to undergo slight elastic deformation. The distance between this fifth rubber pad and the side wall of the first grab is smaller than the diameter of the ore particles, and it is difficult for subsequent ore particles to enter between the fifth rubber pad and the side wall of the first grab under the action of gravity. During the process of transferring the first grab and the second grab to the unloading location, this ore particle blocks the ore particles in the grab from falling. The occurrence of ore particle spillage is reduced. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the unloading device according to Embodiment 1 of the present application.

[0026] Figure 2 is a cross-sectional view of the connection relationship between the third rubber pad and the fourth rubber pad according to Embodiment 2 of the present application.

[0027] Figure 3 is Figure 2 an enlarged view of A in

[0028] Figure 4 is a schematic diagram of the arrangement of the fifth rubber pads on the second grab according to Embodiment 3 of the present application.

[0029] Figure 5 is a cross-sectional view of the structure of the elastic member according to Embodiment 3 of the present application.

[0030] Figure 6 is Figure 5 an enlarged view of B in

[0031] Description of the reference numerals: 1. Connecting block; 2. Support rod; 21. Rotating shaft; 3. First grab; 4. Second grab; 41. Linear groove; 5. Driving member; 6. Sealing member; 61. First rubber pad; 62. Second rubber pad; 63. Third rubber pad; 64. Fourth rubber pad; 65. Fifth rubber pad; 66. Elastic member; 661. Sliding groove body; 662. Sliding block; 663. Spring. Detailed Embodiments

[0032] The following is combined with the attachedFigures 1-6 Further detailed description of this application is provided as follows.

[0033] An ore unloading device for a port is disclosed in an embodiment of this application.

[0034] Embodiment 1

[0035] Referring to Figure 1 , an ore unloading device for a port includes a connecting block 1. A lifting hook is installed on the top wall of the connecting block 1, and a lifting rope is tied to the lifting hook. Support rods 2 are installed on both sides of the connecting block 1. The ends of the support rods 2 far away from the connecting block 1 are arranged vertically, and the tops of the support rods 2 are fixedly connected to the connecting block 1 by bolts. At the bottom ends of the support rods 2, a first grab bucket 3 and a second grab bucket 4 are provided. Both the first grab bucket 3 and the second grab bucket 4 are rotatably connected to the support rods 2 through a rotating shaft 21. A driving member 5 is installed on the connecting block 1. In this embodiment, the driving member 5 is two hydraulic cylinders, and the two hydraulic cylinders are respectively arranged on both sides of the connecting block 1. The cylinder bodies of the two hydraulic cylinders are rotatably connected to the connecting block 1 through a hinge seat. The hydraulic rods of the two hydraulic cylinders are respectively arranged towards the first grab bucket 3 and the second grab bucket 4, and the ends of the two hydraulic rods far away from the connecting block 1 are respectively rotatably connected to the first grab bucket 3 and the second grab bucket 4 through a rotating shaft 21. The driving member 5 drives the first grab bucket 3 and the second grab bucket 4 to rotate around the rotating shaft 21 at the bottom end of the support rod 2 to control the first grab bucket 3 and the second grab bucket 4 to approach or move away from each other. Sealing members 6 are provided on the first grab bucket 3 and the second grab bucket 4 to strengthen the tightness when the first grab bucket 3 and the second grab bucket 4 are connected.

[0036] The operator controls the crane to move the connecting block 1. The movement of the connecting block 1 drives the first grab bucket 3 and the second grab bucket 4 to move through the support rods 2 until the first grab bucket 3 and the second grab bucket 4 are suspended above the cargo hold containing the ore. Start the driving member 5. The hydraulic rods of the driving member 5 retract into the hydraulic cylinders. The retraction of the hydraulic rods drives the first grab bucket 3 and the second grab bucket 4 to separate from each other and remain in an open state. The operator controls the crane to lower the connecting block 1 until the bottom ends of the first grab bucket 3 and the second grab bucket 4 contact the ore and sink into the ore pile under the action of gravity, and the ore fills the first grab bucket 3 and the second grab bucket 4. The operator controls the hydraulic rods of the driving member 5 to extend, driving the first grab bucket 3 and the second grab bucket 4 to approach each other, and the excess ore between the first grab bucket 3 and the second grab bucket 4 is squeezed out. Until the first grab bucket 3 and the second grab bucket 4 are completely fitted, the sealing member 6 is clamped between the first grab bucket 3 and the second grab bucket 4. After the first grab bucket 3 and the second grab bucket 4 are connected through the sealing member 6, keep the hydraulic rods of the driving member 5 in the extended state, and control the crane to transfer the ore to the designated unloading position. The setting of the sealing member 6 can strengthen the connection between the first grab bucket 3 and the second grab bucket 4, and it is difficult for the ore to fall from the gap between the first grab bucket 3 and the second grab bucket 4. The situation of ore spilling during the unloading process is reduced.

[0037] Referring toFigure 1 The seal 6 includes a first rubber pad 61 and a second rubber pad 62. The first rubber pad 61 and the second rubber pad 62 are respectively installed on the side walls of the first grab bucket 3 and the second grab bucket 4 that are close to each other. The first rubber pad 61 and the second rubber pad 62 are adhesively installed on the first grab bucket 3 and the second grab bucket 4 to achieve detachable connection. The first grab bucket 3 and the second grab bucket 4 have the same shape and the same volume. When the driving member 5 drives the first grab bucket 3 and the second grab bucket 4 to approach each other, the first rubber pad 61 and the second rubber pad 62 also approach each other. Until the first grab bucket 3 and the second grab bucket 4 make the first rubber pad 61 and the second rubber pad 62 tightly abut, the first rubber pad 61 and the second rubber pad 62 undergo slight elastic deformation, strengthening the sealing degree of the connection between the first grab bucket 3 and the second grab bucket 4. The materials of the first rubber pad 61 and the second rubber pad 62 are selected as relatively soft rubber. If ore particles are squeezed between the first rubber pad 61 and the second rubber pad 62, the first rubber pad 61 and the second rubber pad 62 at this place both undergo elastic deformation; the first rubber pad 61 and the second rubber pad 62 around this place still tightly abut each other, reducing the occurrence of ore falling. Since the first rubber pad 61 and the second rubber pad 62 are made of relatively soft rubber materials, when the first rubber pad 61 or the second rubber pad 62 is damaged and it is difficult to ensure the sealing performance of the closure of the first grab bucket 3 and the second grab bucket 4, resulting in ore spilling, the operator needs to remove the first rubber pad 61 or the second rubber pad 62 and then replace it.

[0038] The implementation principle of Embodiment 1 is as follows: The operator adhesively installs the first rubber pad 61 and the second rubber pad 62 on the side walls of the first grab bucket 3 and the second grab bucket 4 that are close to each other respectively, and the installation process is simple. When the driving member 5 drives the first grab bucket 3 and the second grab bucket 4 to approach each other, the first rubber pad 61 and the second rubber pad 62 undergo elastic deformation and tightly abut each other. If ore particles are clamped between the first rubber pad 61 and the second rubber pad 62, the first rubber pad 61 and the second rubber pad 62 at this place both undergo elastic deformation; the first rubber pad 61 and the second rubber pad 62 around this place still tightly abut each other, reducing the occurrence of ore falling.

[0039] Embodiment 2

[0040] If the seal 6 is made of a relatively soft material, the seal 6 is prone to damage when rubbing against the ore during use, and the service life of the seal 6 is short, requiring frequent replacement.

[0041] Refer to Figure 2 and Figure 3, the seal 6 includes a third rubber pad 63 and a fourth rubber pad 64, and the materials of the third rubber pad 63 and the fourth rubber pad 64 are selected as harder rubber. The third rubber pad 63 and the fourth rubber pad 64 are respectively nailed to the side walls of the first grab 3 and the second grab 4 close to each other by bolts to achieve detachable connection. The cross-section of the third rubber pad 63 is convexly arranged, and the cross-section of the third rubber pad 63 is a trapezoidal protrusion. A groove is formed on the side wall of the fourth rubber pad 64 close to the third rubber pad 63, and the third rubber pad 63 can be inserted into the groove, and the groove of the fourth rubber pad 64 cooperates with the protrusion of the third rubber pad 63. The diameter of the ore is smaller than the inner diameter of the groove, and the ore particles can be squeezed between the third rubber pad 63 and the fourth rubber pad 64.

[0042] The driving member 5 drives the first grab 3 and the second grab 4 to rotate, driving the third rubber pad 63 and the fourth rubber pad 64 to approach each other along an arc trajectory until the trapezoidal protrusion of the third rubber pad 63 is inserted into the groove of the fourth rubber pad 64, that is, the fourth rubber pad 64 surrounds the outer wall of the protrusion of the third rubber pad 63. The ore in the first grab 3 and the second grab 4 is pressed against the top wall of the fourth rubber pad 64 in the grab under the action of gravity, pressing the fourth rubber pad 64 against the inclined top wall of the protrusion of the third rubber pad 63. Since the friction between rubber and rubber is relatively large when they come into contact, it is difficult for the third rubber pad 63 and the fourth rubber pad 64 to separate. The situation where the third rubber pad 63 and the fourth rubber pad 64 are separated due to the extrusion of the ore in the first grab 3 and the second grab 4 is reduced.

[0043] If there are individual ore particles sandwiched between the third rubber pad 63 and the fourth rubber pad 64, at this time, there is an included angle between the line connecting the center of the third rubber pad 63 and the rotating shaft 21 and the line connecting the center of the fourth rubber pad 64 and the rotating shaft 21, and this included angle is an acute angle. The distance between the top of the third rubber pad 63 and the top of the fourth rubber pad 64 is smaller than the diameter of the ore particles, and it is difficult for the ore particles in the first grab 3 and the second grab 4 to continue to enter the third rubber pad 63 and the fourth rubber pad 64 under the action of gravity. When the crane drives the first grab 3 and the second grab 4 to transfer to the unloading location, the ore particles stuck between the third rubber pad 63 and the fourth rubber pad 64 block the ore in the grab from falling, reducing the occurrence of ore spillage. When the first grab 3 and the second grab 4 are fully opened, the third rubber pad 63 and the fourth rubber pad 64 move away from each other, and the opening of the groove on the fourth rubber pad 64 faces downward, and the ore particles stuck between the third rubber pad 63 and the fourth rubber pad 64 leave under the action of gravity to complete unloading.

[0044] Since the third rubber pad 63 and the fourth rubber pad 64 are made of relatively hard rubber, the situation of abrasion caused by friction between the third rubber pad 63 and the fourth rubber pad 64 and ore particles is reduced, and the service life of the third rubber pad 63 and the fourth rubber pad 64 is improved. When replacement is needed after a long time of use, the operator loosens the bolts for connection to replace them, and the maintenance time is short.

[0045] The implementation principle of Embodiment 2 is as follows: The third rubber pad 63 and the fourth rubber pad 64 are respectively nailed to the first grab 3 and the second grab 4 through bolts to achieve disassembly and installation. When the third rubber pad 63 is completely inserted into the groove of the fourth rubber pad 64, the fourth rubber pad 64 surrounds the protruding outer wall of the third rubber pad 63. Under the action of gravity, the ore presses the fourth rubber pad 64 against the protruding inclined top wall of the third rubber pad 63. Since the friction between rubber and rubber is relatively large, it is difficult for the third rubber pad 63 and the fourth rubber pad 64 to separate. The situation where the third rubber pad 63 and the fourth rubber pad 64 are separated due to the extrusion of ore in the first grab 3 and the second grab 4 is reduced. If there are ore particles sandwiched between the third rubber pad 63 and the fourth rubber pad 64, at this time, the distance between the top of the third rubber pad 63 and the top of the fourth rubber pad 64 is smaller than the diameter of the ore particles, and it is difficult for the ore particles in the first grab 3 and the second grab 4 to continue to enter the third rubber pad 63 and the fourth rubber pad 64 under the action of gravity. The situation of ore spilling is reduced.

[0046] Embodiment 3

[0047] Refer to Figure 4 and Figure 5 As shown in [reference figure] and [reference figure], the seal 6 includes a number of split fifth rubber pads 65 and elastic members 66. The fifth rubber pads 65 are movably arranged on the second grab 4, and the fifth rubber pads 65 and the second grab 4 are elastically connected through the elastic members 66. The side wall of the fifth rubber pad 65 away from the elastic member 66 can abut against the side wall of the first grab 3 close to the second grab 4. A total of 40 fifth rubber pads 65 are provided in this embodiment.

[0048] Refer to Figure 6, a straight groove 41 is formed on the side wall of the second grab bucket 4 close to the first grab bucket 3. The fifth rubber pads 65 are movably arranged in the straight groove 41, and each fifth rubber pad 65 is connected to the inner wall of the straight groove 41 through an elastic member 66. The elastic member 66 includes a sliding groove body 661, and the sliding groove body 661 is installed in the straight groove 41 by bolts. The outer wall of the sliding groove body 661 is in contact with the inner wall of the straight groove 41. A spring 663 is installed inside the sliding groove body 661, and the spring 663 is adhesively connected to the inner wall of the sliding groove body 661 away from the first grab bucket 3. The material of the spring 663 is high-strength carbon steel. A sliding block 662 is installed at one end of the spring 663 close to the first grab bucket 3. The sliding block 662 is always inserted into the sliding groove body 661 and is slidably matched with the inner wall of the sliding groove body 661. The fifth rubber pad 65 is installed on the side wall of the sliding block 662 away from the spring 663, and the fifth rubber pad 65 completely covers the side wall of the sliding block 662 close to the first grab bucket 3.

[0049] The sliding groove bodies 661 are arranged side by side in the straight groove 41, and the outer side walls in the length direction of the sliding groove bodies 661 are in contact with the outer side walls of the adjacent sliding groove bodies 661. Due to the thickness of the side plates of the sliding groove bodies 661, there is a gap between the adjacent fifth rubber pads 65, and the distance between the adjacent fifth rubber pads 65 is smaller than the diameter of the ore particles.

[0050] The implementation principle of Embodiment 3 is as follows: when the first grab bucket 3 and the second grab bucket 4 approach each other, the spring 663 is in a relaxed state. One end of the sliding block 662 away from the spring 663 extends out of the sliding groove body 661, but part of the sliding block 662 still remains in the sliding groove body 661, reducing the occurrence of the sliding block 662 falling off. When the fifth rubber pad 65 starts to contact and be squeezed by the side wall of the first grab bucket 3, the fifth rubber pad 65 drives the sliding block 662 to move inside the sliding groove body 661, and the spring 663 starts to be compressed. The moving trajectories of the fifth rubber pad 65 and the sliding block 662 are parallel to the length direction of the sliding groove body 661, and it is difficult to deviate in the horizontal or vertical direction. When the first grab bucket 3 and the second grab bucket 4 are closed, under the elastic action of the spring 663 tending to recover, the fifth rubber pad 65 is pressed tightly against the side wall of the first grab bucket 3. Since the gap between the adjacent fifth rubber pads 65 is smaller than the diameter of the ore particles, it is difficult for the ore particles to fall from this gap.

[0051] If there are ore particles sandwiched between a certain fifth rubber pad 65 and the side wall of the first grab bucket 3, the distance between the sliding block 662 and the sliding groove body 661 decreases, the elastic force of the spring 663 squeezing the sliding block 662 increases, and the sliding block 662 squeezes the fifth rubber pad 65 to cause slight elastic deformation. The distance between this fifth rubber pad 65 and the side wall of the first grab bucket 3 is smaller than the diameter of the ore particles, and subsequent ore particles are difficult to enter between the fifth rubber pad 65 and the side wall of the first grab bucket 3 under the action of gravity. During the process of transferring the first grab bucket 3 and the second grab bucket 4 to the unloading location, the ore particles block the ore particles in the bucket from falling. The situation of ore particle spillage is reduced.

[0052] When the first grab bucket 3 and the second grab bucket 4 are separated, the spring 663 starts to rebound, and the sliding block 662 and the fifth rubber pad 65 return to their original states. Since the material of the spring 663 is made of high-strength carbon steel, the service life of the spring 663 is improved. When a certain elastic part 66 needs to be replaced, the bolt connection between the sliding groove body 661 and the second grab bucket 4 is released for replacement, reducing the maintenance time.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An ore unloading device for a port, characterized in that: It includes a connecting block (1), the top wall of the connecting block (1) is connected to a hoisting rope; a support rod (2) is installed on the bottom wall of the connecting block (1), the top end of the support rod (2) is fixedly connected to the connecting block (1), and the bottom end of the support rod (2) is provided with a first grab (3) and a second grab (4), the first grab (3) and the second grab (4) are respectively rotatably connected to the support rod (2); a driving member (5) is installed on the connecting block (1), and the end of the driving member (5) away from the connecting block (1) is respectively connected to the first grab (3) and the second grab (4), and the driving member (5) is used to drive the first grab (3) and the second grab (4) to approach or move away from each other; a sealing member (6) is provided on the first grab (3) and the second grab (4).

2. The ore unloading device for a port according to claim 1, characterized in that: The sealing member (6) includes a first rubber pad (61) and a second rubber pad (62), the first rubber pad (61) and the second rubber pad (62) are respectively installed on the side walls of the first grab (3) and the second grab (4) that are close to each other; the first grab (3) and the second grab (4) have the same shape and the same volume, and the side walls of the first rubber pad (61) and the second rubber pad (62) that are close to each other can abut against each other.

3. The ore unloading device for a port according to claim 1, characterized in that: The sealing member (6) includes a third rubber pad (63) and a fourth rubber pad (64), the third rubber pad (63) and the fourth rubber pad (64) are respectively installed on the side walls of the first grab (3) and the second grab (4) that are close to each other; the cross section of the third rubber pad (63) is convexly arranged, and a groove is formed on the side wall of the fourth rubber pad (64) close to the third rubber pad (63), and the third rubber pad (63) can be inserted into the groove.

4. A kind of ore unloading device for ports according to claim 3, characterized in that: The cross section of the third rubber pad (63) is a trapezoidal protrusion, and the groove of the fourth rubber pad (64) cooperates with the protrusion of the third rubber pad (63); the diameter of the ore is smaller than the inner diameter of the groove.

5. The ore unloading device for a port according to claim 1, characterized in that: The sealing member (6) includes a plurality of fifth rubber pads (65) and elastic members (66), a straight groove (41) is formed on the side wall of the second grab (4) close to the first grab (3), and a plurality of the fifth rubber pads (65) are movably arranged in the straight groove (41), and each of the fifth rubber pads (65) is connected to the inner wall of the straight groove (41) through an elastic member (66); the side wall of the fifth rubber pad (65) away from the elastic member (66) can abut against the side wall of the first grab (3) close to the second grab (4).

6. The ore unloading device for a port according to claim 5, wherein: The elastic member (66) includes a sliding groove body (661), a sliding block (662) and a spring (663). The sliding groove body (661) is installed in the linear groove (41), the outer wall of the sliding groove body (661) is in contact with the inner wall of the linear groove (41), the spring (663) is installed on the inner wall of the sliding groove body (661), and the spring (663) is connected to the inner wall of the sliding groove body (661) away from the first grab (3); one end of the spring (663) close to the first grab (3) is connected to the sliding block (662), the sliding block (662) is always inserted in the sliding groove body (661), and is in sliding fit with the inner wall of the sliding groove body (661); the fifth rubber pad (65) is installed on the side wall of the sliding block (662) away from the spring (663); a plurality of the sliding groove bodies (661) are arranged side by side in the linear groove (41), and the outer side walls of the sliding groove bodies (661) in the length direction are in contact with the outer side walls of adjacent sliding groove bodies (661); there is a gap between adjacent fifth rubber pads (65), and the distance between adjacent fifth rubber pads (65) is less than the diameter of the ore.

7. The ore unloading device for a port according to claim 6, characterized in that: The sliding groove body (661) is detachably connected to the second grab (4).

8. The ore unloading device for a port according to claim 6, wherein: The material of the spring (663) is selected as carbon steel.

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