A material handling system and ship unloader

Abstract

The present application relates to the technical field of ship unloading machinery, and particularly relates to a material taking system and a ship unloading machine. The material taking device is arranged, so that the chain bucket arm is adapted to swing around the rotary shaft, and meanwhile, it is ensured that the main load borne by the material taking device is within the plane where the material taking device is located, the force bearing is more reasonable, the operation reliability is improved, and the chain bucket arm is prevented from being damaged due to excessive force bearing. The trolley propulsion system is arranged to drive the running trolley to move. When the running trolley is subjected to external force along the advancing direction or opposite to the advancing direction, the force borne by the material taking device along the ship width direction will be greater than a preset threshold value, so that the transmission of the driving force of the running trolley is cut off, the force cannot be transmitted to the driving equipment of the running trolley, and the running trolley is protected from being damaged. The material is dug along the ship length direction by the hopper, so that more material is dug in the one-way material taking work of the material taking device from one end of the ship to the other end, and the work efficiency of the material taking system in one way is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of unloading machinery and equipment, specifically to a material handling system and an unloading machine. Background Technology

[0002] Ship unloaders are equipment used for loading and unloading bulk materials. Currently, the traditional type of ship unloader is the bridge grab unloader. However, due to the environmental problems such as material spillage and dust during its use, as well as the low efficiency of a single machine and the low energy utilization efficiency, there are many limitations.

[0003] like Figure 1 As shown, while the existing L-type chain bucket unloader solves environmental problems such as material spillage, the horizontally rotating feeding method of the L-type chain bucket's feeding head easily causes the lower end of the vertical arm of the chain bucket to bear a large horizontal force, which can easily lead to excessive torsion of the feeding arm, resulting in failure of the feeding arm rotation mechanism and the boom rotation mechanism. In contrast, the rotary stacking feeding method determines the feeding width through three parameters: chain bucket pitch, chain speed, and chain bucket movement speed. However, these parameters are also interdependent; too high a speed will affect the feeding width, while too low a speed will affect the overall lifting efficiency. Therefore, the rotary feeding method limits further improvements in efficiency.

[0004] Meanwhile, in the existing technology, there is a device that fixes the chain boom to a trolley that can move along the boom, so that the movement of the trolley drives the chain boom to move along the boom. However, during operation, the ship's attitude often changes due to waves, causing the bottom of the ship's hold to collide with the bottom of the chain boom. At this time, the force exerted by the ship on the chain boom is transmitted to the trolley through the rigid connection between the chain boom and the trolley, thereby damaging the structure of the trolley. Once the drive mechanism of the trolley is damaged, the trolley cannot continue to move, which will seriously affect the operation.

[0005] Therefore, ensuring the rationality of the force distribution on the ship unloader, improving unloading efficiency, and ensuring unloading stability are urgent problems to be solved. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art, such as unreasonable stress on the unloading machine, easy damage and low unloading efficiency, and the trolley being easily damaged by the impact of wave surge, so as to provide a material handling system with reasonable stress, high efficiency and high stability.

[0007] Another technical problem to be solved by the present invention is to overcome the defects of the existing ship unloaders, such as unreasonable stress distribution, easy damage, low unloading efficiency, and easy damage to the trolley due to wave surge impact, so as to provide a ship unloader with uniform stress distribution, high efficiency and high stability.

[0008] To solve the above technical problems, the present application provides a material taking system, comprising:

[0009] a running trolley;

[0010] a material taking device arranged on the running trolley;

[0011] a trolley propulsion system adapted to drive the running trolley to move, and cut off the transmission of driving power to the running trolley when the force acting on the material taking device in the ship width direction is greater than a preset threshold;

[0012] The material taking device comprises:

[0013] a chain bucket arm arranged in the ship length direction;

[0014] a bucket chain formed by sequentially connecting a plurality of buckets end to end, the bucket chain being arranged around the outer circumferential side of the chain bucket arm;

[0015] a driving unit adapted to drive the bucket chain to rotate relative to the chain bucket arm;

[0016] a swivel shaft hingedly connected to the chain bucket arm, the chain bucket arm being adapted to swing around the swivel shaft;

[0017] The force direction of the bucket chain when excavating material is parallel to the swivel plane of the chain bucket arm;

[0018] The bucket excavates material in the ship length direction.

[0019] Optionally, the driving unit comprises:

[0020] a driving motor;

[0021] a driving sprocket, the outer circumferential side of the driving sprocket being in close contact with the bucket chain, the driving motor being adapted to drive the bucket chain to rotate via the driving sprocket.

[0022] Optionally, the material taking device further comprises: two tension sprockets arranged at one end away from the driving sprocket along the length direction of the chain bucket arm;

[0023] The two tension sprockets are adapted to stretch the bucket chain, and make at least part of the bucket chain form a material taking section adapted to contact with material.

[0024] Optionally, an ascending material section adapted to lift material is formed between the end of the material taking section and the driving sprocket.

[0025] Optionally, after the bucket chain passes around the driving sprocket from the end of the ascending material section, the orientation of the opening of the bucket is changed and unloading is completed.

[0026] A first redirecting sprocket is arranged between the driving sprocket and the head end of the material taking section; the hopper chain forms a first descending section between the driving sprocket and the first redirecting sprocket, and forms a second descending section between the first redirecting sprocket and the head end of the material taking section;

[0027] The second descending section is arranged at an angle to the first descending section;

[0028] A second redirecting sprocket is arranged between the driving sprocket and the first redirecting sprocket, and the hopper chain forms a discharging section between the driving sprocket and the second redirecting sprocket.

[0029] Optionally, the trolley propulsion system comprises:

[0030] A driving wheel is hingedly connected to a trolley body of the running trolley;

[0031] A flexible track is in abutment with the driving wheel, and the driving wheel is adapted to travel along a preset direction relative to the flexible track under the driving of a driving unit;

[0032] A protection device is in direct or indirect abutment with the flexible track, and is adapted to cut off power transmission from the driving unit to the driving wheel when the tension of the flexible track is greater than a preset threshold.

[0033] Optionally, the trolley propulsion system further comprises:

[0034] A pressing wheel is arranged on opposite sides of the flexible track relative to the driving wheel, and is in abutment with the flexible track to tension the flexible track;

[0035] A clutch has an engaged state of engagement with the driving unit, and a disengaged state of disengagement from the driving unit, and the clutch is adapted to switch between the engaged state and the disengaged state according to the force of the flexible track acting on the pressing wheel;

[0036] A connecting plate is hingedly connected to the trolley body, one end of the connecting plate is fixedly connected to the pressing wheel, and the other end of the connecting plate away from the pressing wheel is fixedly connected to the clutch.

[0037] Optionally, the pressing wheel is adapted to move upward when the tension of the flexible track is greater than a preset threshold, and to drive the clutch to move downward via the connecting plate, so that the clutch is disengaged from the driving unit;

[0038] Alternatively, the pressing wheel is adapted to move downward when the tension of the flexible track is less than or equal to a threshold, and to drive the clutch to move upward via the connecting plate, so that the clutch is engaged with the driving unit.

[0039] Optionally, the protection device further comprises a tensioning oil cylinder, one end of the tensioning oil cylinder is connected with the trolley body, the other end is connected with the compression wheel, the tensioning oil cylinder is suitable for providing a force to the compression wheel in the direction of the flexible track, and is suitable for extending or retracting according to the size of the force of the flexible track acting on the compression wheel.

[0040] The application further provides a ship unloader, comprising:

[0041] The material taking system according to any one of the above solutions, the running direction of the running trolley is parallel to the rotation plane of the chain bucket arm, and the material taking direction of the material taking device is along the ship length direction.

[0042] The technical solution of the application has the following advantages:

[0043] The material taking system provided by the application, through the cooperation of the material taking device, the chain bucket arm, the hopper chain, the driving unit, the rotation shaft and other components, the chain bucket arm is suitable for swinging around the rotation shaft, at the same time, it is ensured that the main load acting on the material taking device is within the plane where the material taking device is located, the stress is more reasonable, the operation reliability is improved, the chain bucket arm is prevented from being damaged due to excessive stress, and the defects of the prior art, such as unreasonable stress of the ship unloader and low unloading efficiency, are overcome; the trolley propulsion system is arranged to drive the running trolley to move, when the running trolley is subjected to an external force in the running direction or opposite to the running direction, the stress of the material taking device in the ship width direction will be greater than a preset threshold, so that the transmission of the driving power to the running trolley is cut off, so that the external force cannot be transmitted to the driving device of the running trolley, thereby protecting the running trolley from being damaged, and overcoming the defect of the prior art that the running trolley of the ship unloader is easily damaged by surge impact force; and the hopper is arranged to dig materials along the ship length direction, so that more materials can be dug by the material taking device in one-way material taking work from one end of the bow or the stern to the other end of the bow or the stern, and the work efficiency of the material taking system in one way is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the specific embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0045] Figure 1 It is a schematic diagram of an L-shaped chain bucket ship unloader in the prior art;

[0046] Figure 2 It is a structural schematic diagram of the ship unloader provided by the application;

[0047] Figure 3 The ship unloader provided by the present application is along Figure 2 The structural schematic view of the material taking device shown in the A direction view angle in the figure;

[0048] Figure 4 The ship unloader provided by the present application is along Figure 3 The local enlarged view in the figure; Figure 1

[0049] Figure 5 The local enlarged view in the figure; Figure 3 Figure 2

[0050] Figure 6 The local structural schematic view of the hopper chain provided by the present application;

[0051] Figure 7 The structural schematic view of the hopper provided by the present application;

[0052] Figure 8 The schematic view of the trolley propulsion system clutch in the closed state provided by the present application;

[0053] Figure 9 The schematic view of the trolley propulsion system clutch in the disconnected state provided by the present application.

[0054] Explanation of reference signs:

[0055] 10, frame body; 11, door leg; 12, main beam; 13, running trolley; 20, ship cabin; 30, material; 40, wharf foundation;

[0056] 100, material taking device; 101, driving motor; 102, driving sprocket; 103, rotating shaft; 104, chain bucket arm; 1051, first reversing sprocket; 1052, second reversing sprocket; 106, tensioning push rod; 107, cover; 108, tensioning sprocket; 110, hopper chain; 111, hopper; 112, connecting plate; 113, hopper back plate; 114, ear plate;

[0057] 120, material lifting section; 130, first descending section; 140, second descending section; 150, material taking section; 160, material unloading section.

[0058] 104, chain bucket arm; 111, hopper; 601, arm support; 401, flexible track; 402, driving wheel; 403, trolley body; 404, driving unit; 405, clutch; 406, connecting plate; 407, connecting plate hinge point; 408, tensioning oil cylinder; 409, pressing wheel; 410, trolley wheel; 411, oil cylinder hinge point. DETAILED DESCRIPTION

[0059] ​​​The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0060] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0061] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0063] Embodiment 1

[0064] The material taking system provided in this embodiment, as shown in the figure, comprises a running trolley 13, a material taking device 100, a trolley propulsion system, etc. Figures 2-9

[0065] The running trolley 13.

[0066] The material taking device 100 is on the running trolley 13.

[0067] The trolley propulsion system is adapted to drive the running trolley 13 to move, and when the force acting on the material taking device 100 in the ship width direction is greater than a preset threshold, the transmission of the driving power to the running trolley 13 is cut off.

[0068] ​Specifically, when the running trolley 13 is subjected to an external force along or opposite to the direction of travel during the driving of the trolley propulsion system to drive the running trolley 13 to move, the force on the material taking device 100 in the ship width direction will be greater than the preset threshold, so that the transmission of the driving force to the running trolley 13 is cut off, so that the driving force is not transmitted to the driving device of the running trolley 13, thereby protecting the running trolley 13 from damage, thereby reducing the failure rate of the running trolley 13 and prolonging the service life of the running trolley 13.

[0069] The material taking device 100 comprises a chain bucket arm 104, a hopper chain 110, a driving unit, a rotating shaft 103, etc.

[0070] The chain bucket arm 104 is arranged in the ship length direction.

[0071] Specifically, the chain bucket arm 104 is arranged in the ship length direction so that the material taking device 100 can dig material in the ship length direction.

[0072] Further, the chain bucket arm 104 serves as the main structure of the material taking device 100 and is used to support other structural components. In this embodiment, the chain bucket arm 104 can be a metal frame extending in the length direction. The force direction of the hopper chain 110 when digging material 30 is the extension direction of the material taking section 150.

[0073] The hopper chain 110 is composed of a plurality of hoppers 111 connected in sequence. The hopper chain 110 is arranged around the outer circumferential side of the chain bucket arm 104.

[0074] The driving unit is adapted to drive the hopper chain 110 to rotate relative to the chain bucket arm 104.

[0075] The rotating shaft 103 is hingedly connected to the chain bucket arm 104, and the chain bucket arm 104 is adapted to swing about the rotating shaft 103.

[0076] Specifically, as shown in Figure 3 The hopper chain 110 is composed of a plurality of hoppers 111 connected in sequence. The hopper chain 110 is configured in a ring shape and is adapted to rotate relative to the chain bucket arm 104 under the driving of the driving unit. A plurality of hoppers 111 are arranged on the hopper chain 110, so that during the cyclic reciprocating motion, the hoppers 111 are used to dig material, and after the material is lifted to a certain height, the material 30 is poured, and then the material is continuously dug. In this embodiment, the material 30 can be coal, and can also be corn, wheat and other grains, or other substances that can be accommodated in the hopper 111.

[0077] As a preferred embodiment, the ship unloader extends out the main beam 12, and the chain bucket arm 104 is installed on the main beam 12. Specifically, the chain bucket arm 104 is hingedly connected to the main beam 12 through a rotating shaft 103, so that the chain bucket arm 104 can swing relative to the main beam 12 around the rotating shaft 103. Further, the force direction of the bucket chain 110 when digging the material 30 is parallel to the rotating plane of the chain bucket arm 104, so that the material taking device 100 does not bear additional force when working. When the twisting force of the bucket chain 110 when digging the material 30 is too large, the chain bucket arm 104 will swing freely around the rotating shaft 103 under the action of the force. The main load of the material taking device 100 is within the plane of the material taking device 100, avoiding the chain bucket arm 104 from being damaged due to excessive force, which is beneficial to prolong the service life and improve the efficiency of the equipment.

[0078] Further, by setting the rotating shaft 103, the chain bucket arm 104 is adapted to swing around the rotating shaft 103, and the force direction of the bucket chain 110 when digging the material 30 is parallel to the rotating plane of the chain bucket arm 104, so as to ensure that the main load of the material taking device 100 is within the plane of the material taking device 100, the force is more reasonable, the operation reliability is improved, the chain bucket arm 104 is avoided from being damaged due to excessive force, which is beneficial to prolong the service life and improve the efficiency of the equipment.

[0079] The force direction of the bucket chain 110 when digging the material 30 is parallel to the rotating plane of the chain bucket arm 104.

[0080] Specifically, by setting the opening direction of the bucket 111 parallel to the rotating plane of the bucket chain 110, and the opening direction of the bucket 111 parallel to the rotating plane of the chain bucket arm 104, and further, the opening direction of the bucket 111 is parallel to the translation direction of the material taking device 100 along the main beam 12, that is, the front feeding mode is adopted, so that the bucket 111 can shovel the material into the bucket more directly when digging the material, and the operation efficiency is greatly improved. The front feeding mode can also avoid the material from being squeezed at the head of the material taking head, and avoid large lateral digging resistance.

[0081] The bucket 111 digs the material 30 along the length direction of the ship.

[0082] Specifically, as Figure 2 , Figure 3As shown, the material taking device 100 is arranged along the ship length direction, that is, the chain bucket arm 104 is arranged along the ship length direction, so that the bucket 111 arranged on the chain bucket arm 104 can dig the material 30 along the ship length direction. Since the length of the ship length direction is larger than that of the ship width direction, when the bucket 111 digs along the ship length direction, the range of the material 30 covered by the bucket 111 in one-way material taking work from one end of the bow or stern to the other end of the bow or stern is larger than that of the way of digging along the ship width direction, that is, more material 30 is dug in one-way material taking work, which effectively improves the work efficiency of the material taking system in one way.

[0083] It should be noted that the "ship length direction" in the embodiment is perpendicular to the "ship width direction" in the same horizontal plane, and the ship width direction refers to Figure 2 the arrow in the ship width direction, and is combined with Figure 2 the ship width direction refers to the width direction of the cabin 20, that is, the ship length direction refers to the length direction of the cabin 20, that is, the vertical direction of the visual plane.

[0084] The material taking system provided by the embodiment is characterized in that the material taking device 100 cooperates with the chain bucket arm 104, the bucket chain 110, the driving unit, the rotating shaft 103 and other components to jointly act on the chain bucket arm 104 to make the chain bucket arm 104 suitable for swinging around the rotating shaft 103, and at the same time, ensure that the main load borne by the material taking device 100 is within the plane where the material taking device 100 is located, so that the force is more reasonable, the operation reliability is improved, the chain bucket arm 104 is prevented from being damaged due to excessive force, and the defects of the existing technology, such as unreasonable force borne by the ship unloader and low unloading efficiency, are overcome. The trolley propulsion system is arranged to drive the running trolley 13 to move. When the running trolley 13 is subjected to an external force along the direction of movement or opposite to the direction of movement, the force borne by the material taking device 100 along the ship width direction will be greater than a preset threshold, so that the transmission of the driving power to the running trolley 13 is cut off, so that the external force cannot be transmitted to the driving device of the running trolley 13, thereby protecting the running trolley 13 from being damaged, and overcoming the defect of the existing technology that the running trolley 13 of the ship unloader is easily damaged due to surge impact force. The bucket 111 is arranged to dig the material 30 along the ship length direction, so that the material taking device 100 can dig more material 30 in one-way material taking work from one end of the bow or stern to the other end of the bow or stern, thereby effectively improving the work efficiency of the material taking system in one way.

[0085] On the basis of the above-mentioned embodiments, as a further defined embodiment, as shown in Figure 5 the driving unit includes a driving motor 101, a driving sprocket 102 and the like.

[0086] The driving motor 101.

[0087] The driving sprocket 102 is adapted to drive the bucket chain 110 to rotate via the driving motor 101.

[0088] As a preferred embodiment, the driving motor 101 is connected to the driving sprocket 102 via a speed reducer, and the driving sprocket 102 is located at the upper part of the bucket taking device 100.

[0089] Based on the above embodiment, as a further defined embodiment, as shown in Figure 4 the bucket taking device 100 further comprises two tension sprockets 108, which are located at the end away from the driving sprocket 102 along the length direction of the chain bucket arm 104.

[0090] The two tension sprockets 108 are adapted to stretch the bucket chain 110, and make at least part of the bucket chain 110 form a taking section 150 adapted to contact the material 30.

[0091] Specifically, as shown in Figure 4 the two tension sprockets 108 are located at the lower part of the bucket taking device 100, and the two tension sprockets 108 can stretch the lower part of the bucket chain 110, so that when the plurality of buckets run to this position, the plurality of buckets can be in an open forward state, thereby facilitating the simultaneous taking of the plurality of buckets and improving the taking efficiency.

[0092] Further, the bucket taking device 100 further comprises a tension push rod 106 located between the two tension sprockets 108, which is adapted to maintain the relative distance of the two tension sprockets 108 to tension the bucket chain 110. Thus, the tension of the bucket chain 110 is ensured, and the length of the taking section 150 is maintained.

[0093] Based on the above embodiment, as a further defined embodiment, as shown in Figure 3 the end of the taking section 150 and the driving sprocket 102 form a lifting section 120 adapted to lift the material 30.

[0094] It should be noted that the end of the taking section 150 refers to the end of the bucket chain 110 in the rotation direction of the bucket chain 110, which maintains contact with the material 30. Correspondingly, the head of the taking section 150 refers to the head of the bucket chain 110 in the rotation direction of the bucket chain 110, which maintains contact with the material 30.

[0095] As a preferred embodiment, the lifting section 120 in this embodiment is a straight section. By setting the lifting section 120 as a straight section, the bucket is always maintained on a straight line, thereby ensuring the stability of the material lifting process.

[0096] Based on the above embodiment, as a further defined embodiment, as shown in Figure 3As shown, the hopper chain 110 changes the orientation of the opening of the hopper 111 after passing around the drive sprocket 102 at the end of the lifting section 120 and completes the unloading;

[0097] A first redirecting sprocket 1051 is arranged between the drive sprocket 102 and the head end of the taking section 150; the hopper chain 110 forms a first descending section 130 between the drive sprocket 102 and the first redirecting sprocket 1051 and forms a second descending section 140 between the first redirecting sprocket 1051 and the head end of the taking section 150;

[0098] The second descending section 140 is arranged at an angle to the first descending section 130.

[0099] As a preferred embodiment, by arranging the first redirecting sprocket 1051 between the drive sprocket 102 and the head end of the taking section 150, the hopper chain 110 forms the first descending section 130 and the second descending section 140, and the second descending section 140 is arranged at an angle to the first descending section 130, so that the overall structure of the hopper chain 110 is generally in the shape of a chevron, i.e. at the upper part of the taking device 100, the load-lifting hopper and the emptying hopper are close to each other, so that the upper structure of the taking device 100 is small, and at the lower part of the taking device 100, after being redirected by the first redirecting sprocket 1051, the lifting hopper and the descending hopper are far away from each other, and the descending hopper is bent at an angle, so that the lower part of the taking device 100 forms a shape similar to a triangle, facilitating the arrangement of the taking section 150.

[0100] As a preferred embodiment, by adopting the chevron-shaped taking device 100, the way of blade-line front feeding with higher force efficiency is adopted, at the bottom of the chevron structure, in order to enable the taking arm to dig the material below the hatch coaming, the taking section 150 with sufficient length is arranged at the bottom of the taking device 100, so that the hopper can dig the material at high speed in the ship width direction, and the efficiency is greatly improved.

[0101] The traditional L-shaped taking head realizes the feeding of the material into the hopper by left and right sweeping, but the deep and narrow taking device is not easy to unload completely, and this way of rotary feeding must adopt the L-shaped taking device and be matched with the deep and narrow hopper, so as to realize the rotary stacking and squeezing feeding. The taking device provided in the embodiment adopts the front taking head with the chevron-shaped structure, compared with the traditional chain bucket unloader, the structure is simpler, the stress on the bottom of the whole taking device is more uniform, and the cost is also lower.

[0102] On the basis of the above-mentioned embodiment, as a further defined embodiment, as shown in Figure 3 A second redirecting sprocket 1052 is arranged between the drive sprocket 102 and the first redirecting sprocket 1051, and the hopper chain 110 forms an unloading section 160 between the drive sprocket 102 and the second redirecting sprocket 1052.

[0103] As a preferred embodiment, a collecting device such as a funnel can be arranged at the lower position of the discharging section 160 to facilitate the subsequent delivery of the material. By arranging the discharging section 160, the interference of the downward moving empty hopper with the full hopper that needs to be discharged can be reduced, and the efficient performance of the discharging operation can be ensured.

[0104] As a preferred embodiment, a cover 107 for dust prevention is arranged outside the hopper chain 110 to prevent dust.

[0105] Due to the rotary feeding mode used by the conventional chain bucket ship unloader, the chain bucket needs to be selected as a deep and narrow type to facilitate digging, and the deep and narrow type chain bucket is not easy to be completely discharged. The hopper of the embodiment can be arranged as a wide and shallow type to facilitate the entry and discharge of the material.

[0106] As shown in Figure 6 , Figure 7 , the hopper chain 110 is formed by alternately connecting the hoppers 111 and the connecting plates 112. The two ends of each hopper 111 are provided with ear plates 114, and the ear plates 114 are provided with shaft holes. The connecting plates 112 are also provided with shaft holes, and the ear plates 114 and the connecting plates 112 are hingedly connected by pins to connect all the hoppers together to form the hopper chain.

[0107] The conventional chain bucket ship unloader uses chain transmission, and the material taking chain bucket is arranged between two chains. The driving device drives the chains to move the chain bucket. This transmission mode has high requirements for the performance of the chains, and the chains are easily damaged and need to be replaced regularly, which has high maintenance cost.

[0108] Preferably, the material taking device provided by the embodiment can directly participate in transmission by the hopper back plate 113 of the hopper 111, cancel the conventional chain transmission, use the connecting plate to connect the hoppers, and make the hoppers become part of the transmission. The hopper is not only the working mechanism for digging the material, but also participates in the transmission as part of the hopper chain, which increases the stress area and improves the reliability.

[0109] Based on the above embodiment, as a further defined embodiment, as shown in Figure 8 , Figure 9 , the trolley propulsion system includes a driving wheel 402, a flexible track 401, and a protection device.

[0110] The driving wheel 402 is hingedly connected with the trolley body 403 of the running trolley 13.

[0111] The flexible track 401 is in abutment with the driving wheel 402, and the driving wheel 402 is adapted to travel along a preset direction relative to the flexible track 401 under the driving of the driving unit 404.

[0112] The protection device is in abutment with the flexible track 401 directly or indirectly, and is adapted to cut off the power transmission from the driving unit 404 to the driving wheel 402 when the tension of the flexible track 401 is greater than a preset threshold.

[0113] It should be noted that the preset direction is the extension direction of the flexible track 401, which refers to one of the "running directions" as indicated by the arrows in Figure 8 The protection device is in abutment with the flexible track 401 directly or indirectly, and is adapted to cut off the power transmission from the driving unit 404 to the driving wheel 402 when the tension of the flexible track 401 is greater than a preset threshold. Figure 8 As shown in the structure diagram of a set of protection devices, in actual application, the number of protection devices is two, and the two sets of protection devices are respectively arranged on the two sides of the driving wheel 402 along the "running direction" in Figure 8 Both sets of protection devices can independently achieve the effect of cutting off the power transmission from the driving unit 404 to the driving wheel 402, and are adapted to play a protective role when the trolley body 403 is subjected to external forces along two different directions of the "running direction" in Figure 8 Both sets of protection devices can independently achieve the effect of cutting off the power transmission from the driving unit 404 to the driving wheel 402, and are adapted to play a protective role when the trolley body 403 is subjected to external forces along two different directions of the "running direction" in

[0114] As an embodiment, the flexible track 401 is a chain, and the driving wheel 402 is a sprocket. The trolley propulsion system drives the trolley body 403 to travel along the extension direction of the chain through the chain and sprocket cooperation.

[0115] As an embodiment, the two ends of the flexible track 401 are fixedly arranged on the external structure, and further optionally, when the trolley propulsion system is applied to the ship unloader, the two ends of the flexible track 401 are fixedly arranged at the two ends of the boom 601.

[0116] The trolley propulsion system provided by the embodiment is characterized in that the driving wheel 402 is arranged to travel along the preset direction relative to the flexible track 401 under the driving of the driving unit 404, thereby driving the trolley body 403 to travel along the preset direction, facilitating the adjustment of the position of the trolley body 403; the protective device is arranged to cut off the power transmission from the driving unit 404 to the driving wheel 402 when the tension of the flexible track 401 is greater than the preset threshold, preventing the driving unit 404 from being damaged due to the difficulty in driving the driving wheel 402 when the tension of the flexible track 401 is too large, and after the driving unit 404 cuts off the power transmission to the driving wheel 402, the driving unit 404 is no longer rigidly connected with the driving wheel 402, so that when the trolley body 403 is subjected to an external force along the travel direction or opposite to the travel direction, the external force will not be transmitted to the driving unit 404, thereby protecting the driving unit 404 from being damaged, reducing the failure rate of the trolley, and prolonging the service life of the trolley.

[0117] On the basis of the above-mentioned embodiments, as a further defined embodiment, as shown in Figure 8 、 Figure 9 The trolley propulsion system further comprises a pressing wheel 409, a clutch 405, a connecting plate 406, and the like.

[0118] The pressing wheel 409 is arranged on opposite sides of the flexible track 401 relative to the driving wheel 402 and abuts against the flexible track 401, so as to tension the flexible track 401.

[0119] As an embodiment, the number of the pressing wheels 409 is two, and the two pressing wheels 409 are arranged on the front side and the rear side of the driving wheel 402 along the running direction of the driving wheel 402, thereby increasing the stability of the force received by the flexible track 401.

[0120] Specifically, the pressing wheels 409 and the driving wheel 402 are arranged on opposite sides of the flexible track 401, and the pressing wheels 409 and the driving wheel 402 on opposite sides of the flexible track 401 provide different directions of force to the flexible track 401, thereby realizing the tensioning of the flexible track 401, and the overall structure is stable and reliable, thereby increasing the stability of the system.

[0121] The clutch 405 has an engaged state of engaging with the driving unit 404 and a disengaged state of disengaging from the driving unit 404, and the clutch 405 is adapted to switch between the engaged state and the disengaged state according to the size of the force of the flexible track 401 received by the pressing wheel 409.

[0122] As an implementation, the protection device is connected with the compression wheel 409, that is, the protection device indirectly abuts against the flexible rail 401, when the tension of the flexible rail 401 is different, the compression wheel 409 is subjected to different forces from the flexible rail 401, thereby switching the engagement state and the disengagement state of the clutch 405 according to the force of the flexible rail 401 on the compression wheel 409. When the tension of the flexible rail 401 is greater than a preset threshold, the force of the flexible rail 401 on the compression wheel 409 increases, the clutch 405 is switched to the disengagement state, and the power transmission from the driving unit 404 to the driving wheel 402 is cut off; when the tension of the flexible rail 401 is less than or equal to the preset threshold, the force of the flexible rail 401 on the compression wheel 409 is small, the clutch 405 is switched to the engagement state, and the driving unit 404 transmits power to the driving wheel 402. It should be noted that the two sets of protection devices are respectively connected with one compression wheel 409.

[0123] As a deformable implementation, the protection device is not connected with the compression wheel 409, but is directly connected with the flexible rail 401. Optionally, a sensor is arranged on the protection device to sense the tension of the flexible rail 401. When the sensor detects that the tension of the flexible rail 401 is greater than a preset threshold, the clutch is directly controlled by the controller to switch to the disengagement state, and the clutch can also be switched between the engagement state and the disengagement state.

[0124] Specifically, by arranging the clutch 405 to switch between the engagement state and the disengagement state according to the force of the flexible rail 401 on the compression wheel 409, the protection device is switched between not cutting off the power transmission from the driving unit 404 to the driving wheel 402 and cutting off the power transmission from the driving unit 404 to the driving wheel 402 according to the tension of the flexible rail 401, which is simple in structure, convenient to operate, and good in protection effect.

[0125] The connecting plate 406 is hingedly connected with the trolley body 403, one end of the connecting plate 406 is fixedly connected with the compression wheel 409, and the other end of the connecting plate 406 away from the compression wheel 409 is fixedly connected with the clutch 405.

[0126] As an implementation, the trolley body is provided with a connecting plate hinge point 407, the connecting plate 406 is hingedly connected with the trolley body 403 through the connecting plate hinge point 407, and the connecting plate 406 can rotate around the connecting plate hinge point 407.

[0127] On the basis of the above-mentioned implementation, as a further defined implementation, as Figure 8 , Figure 9As shown, the compression wheel 409 is adapted to move upward when the tension of the flexible track 401 is greater than a preset threshold, and drive the clutch 405 to move downward via the connecting plate 406, so as to separate the clutch 405 from the driving unit 404.

[0128] Alternatively, the compression wheel 409 is adapted to move downward when the tension of the flexible track 401 is less than or equal to the threshold, and drive the clutch 405 to move upward via the connecting plate 406, so as to engage the clutch 405 with the driving unit 404.

[0129] It should be noted that the upper and lower refer to Figure 8 the "upper" and "lower" indicated by the arrows.

[0130] Specifically, by setting the connecting plate 406 to connect the compression wheel 409 and the clutch 405, the clutch 405 and the compression wheel 409 are driven to move in opposite directions, so that when the tension of the flexible track 401 is greater than a preset threshold, the compression wheel 409 is driven to move upward and the clutch 405 is driven to move downward, so as to separate the clutch 405 from the driving unit 404, which is reasonable in structure and good in operability, and further ensures the safety of the system.

[0131] Based on the above embodiment, as a further defined embodiment, as shown in Figure 8 , Figure 9 As shown, the protection device further comprises a tensioning oil cylinder 408, one end of which is connected with the trolley body 403, and the other end is connected with the compression wheel 409, the tensioning oil cylinder 408 is adapted to provide a force to the compression wheel 409 towards the flexible track 401, and is adapted to extend or retract according to the size of the force of the flexible track 401 acting on the compression wheel 409.

[0132] As an embodiment, the tensioning oil cylinder 408 is hingedly connected with the trolley body 403 through a hinge point provided on the trolley body 403, and the tensioning oil cylinder 408 can rotate around the hinge point.

[0133] Specifically, by setting the tensioning oil cylinder 408 to provide a force to the compression wheel 409 towards the flexible track 401, and extending or retracting according to the size of the reaction force of the flexible track 401 acting on the tensioning oil cylinder 408, the flexible track 401 is ensured to be in a reasonable tension state, and the movement of the compression wheel 409 when the tension of the flexible track 401 is greater than a preset threshold is realized.

[0134] Further, the connecting plate 406 is provided with an oil cylinder hinge point 411, and the tensioning oil cylinder 408 is hingedly connected to the connecting plate 406 through the oil cylinder hinge point 411. By hingedly connecting the tensioning oil cylinder 408 to the connecting plate 406 through the oil cylinder hinge point 411 provided on the connecting plate 406, the relative rotation between the connecting plate 406 and the tensioning oil cylinder 408 is realized, so that when the compression wheel 409 needs to move up and down, the distance between the compression wheel 409 and the fixed end of the tensioning oil cylinder 408 is adjusted through the relative rotation between the tensioning oil cylinder 408 and the connecting plate 406, so as to ensure the smooth up and down movement of the compression wheel 409.

[0135] Further, the trolley propulsion system further comprises: a trolley wheel 410 provided at the bottom end of the trolley body 403 and adapted to provide guidance for the movement of the trolley body 403.

[0136] The action process of the trolley propulsion system under the action of the surge is described in detail as follows:

[0137] When the trolley propulsion system is subjected to the action of the surge, the trolley body 403 connected with the chain bucket arm 104 has a movement trend along the direction of the surge, and the flexible track 401 below the compression wheel 409 is stretched, the tension of the flexible track 401 is increased, the flexible track 401 has a straightening trend, and the force of the flexible track 401 on the top of the compression wheel 409 is increased, and when the force exceeds the threshold value of the tensioning oil cylinder 408, the tensioning oil cylinder 408 is contracted, the oil cylinder piston rod is retracted, and the compression wheel 409 is lifted; when the piston rod is retracted, the protection device rotates around the connecting plate hinge point 407, and after rotation, the clutch 405 is in a separated state, and the driving unit 404 is disconnected with the driving wheel 402, so that the driving unit 404 no longer drives the trolley to move; at this time, since the driving unit 404 is no longer connected with the driving wheel 402, the action force of the surge on the trolley will not be transmitted to other structures, and even if the trolley moves in the opposite direction under the action of the surge, the driving unit 404 will not be damaged; then, after the surge ends, the tension of the flexible track 401 returns to the normal state, the piston rod of the tensioning oil cylinder 408 continues to be lifted, the clutch 405 is in an engaged state, the driving unit 404 continues to drive the wheel 402, and the trolley returns to the normal working state.

[0138] Embodiment 2

[0139] The embodiment provides an unloading machine, which comprises a trolley propulsion system, a chain bucket arm 104, a flexible track 401, a compression wheel 409, a tensioning oil cylinder 408, a connecting plate 406, a protection device, a driving unit 404, a driving wheel 402, a clutch 405, and a trolley body 403. Figures 2-9As shown, the unloading machine comprises the material taking system in Embodiment 1, the running direction of the running trolley 13 is parallel to the rotation plane of the chain bucket arm 104, and the main load borne by the material taking device 100 of the unloading machine is ensured to be within the plane where the material taking device 100 is located, the force borne by the unloading machine is more reasonable, the running reliability is improved, the unloading machine is prevented from being damaged due to excessive force borne by the chain bucket arm 104, and the defects of the unloading machine in the prior art, such as unreasonable force borne and low unloading efficiency, are overcome. Meanwhile, the trolley propulsion system arranged on the unloading machine is used to drive the running trolley 13 to move. When the running trolley 13 is subjected to an external force along the running direction or opposite to the running direction, the force borne by the material taking device 100 along the ship width direction will be greater than a preset threshold value, so that the transmission of the driving power of the running trolley 13 is cut off, the external force cannot be transmitted to the driving device of the running trolley 13, and the running trolley 13 is protected from being damaged, thereby overcoming the defect of the unloading machine in the prior art, that is, the running trolley 13 is easily damaged due to surge impact force. Meanwhile, the material taking direction of the material taking device 100 is along the ship length direction, so that more material 30 can be dug in the one-way material taking work of the material taking device 100 of the unloading machine from one end of the bow or the stern to the other end of the bow or the stern, and the one-way working efficiency of the unloading machine is effectively improved.

[0140] Specifically, as shown in Figure 2 The unloading machine further comprises a frame body 10, the frame body 10 has a door leg 11, the door leg 11 is connected with a wharf foundation 40, and the wharf foundation 40 is provided with a track, and the door leg 11 can move along the track to drive the frame body to move along the track.

[0141] Further, the frame body 10 further comprises a main beam 12, the main beam 12 comprises an arm support 601 extending out of the door leg 11, the arm support 601 is provided with a trolley propulsion system, a running trolley 13 is adapted to move along the arm support 601, a chain bucket arm 104 is connected to a trolley body 403 of the running trolley 13, the arm support 601 can drive the chain bucket arm 104 to move above the ship cabin 20, and the trolley body 403 can drive the chain bucket arm 104 to move along the arm support 601 to unload the material 30 in the ship cabin 20, wherein the above refers to Figure 1 the "up" indicated by the arrow in the middle.

[0142] Further, the arm support 601 can move up and down along the vertical direction to drive the chain bucket arm 104 to move up and down, thereby unloading the material 30 at different heights in the ship cabin 20.

[0143] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation on the embodiments. Based on the above description, other different forms of changes or variations can be made by those skilled in the art. Here, all the embodiments cannot be exhausted, and the changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A material removal system characterized by, include: Running trolley (13); A material handling device (100) is installed on the running trolley (13); The trolley propulsion system is adapted to drive the running trolley (13) to move, and when the force on the material handling device (100) in the width direction of the ship is greater than a preset threshold, the transmission of driving power to the running trolley (13) is cut off. The material handling device (100) is arranged along the length of the ship, and the material handling device (100) includes: The chain bucket arm (104) is arranged along the length of the ship so that the material handling device (100) can dig up the material (30) along the length of the ship. The hopper chain (110) is formed by connecting multiple hoppers (111) sequentially end to end, and the hopper chain (110) is arranged around the outer periphery of the chain bucket arm (104); The first drive unit is adapted to drive the bucket chain (110) to rotate relative to the bucket arm (104); A rotating shaft (103) is hinged to the chain bucket arm (104), which is adapted to swing about the rotating shaft (103); The direction of force on the bucket chain (110) when digging up material (30) is parallel to the plane of rotation of the bucket arm (104); Since the length of the ship is greater than that of the width of the ship, when the hopper (111) digs along the length of the ship, more material (30) is dug in a single work trip; The vehicle propulsion system includes: The drive wheel (402) is hinged to the trolley body (403) of the running trolley (13); The flexible track (401) abuts against the drive wheel (402), and the drive wheel (402) is adapted to travel relative to the flexible track (401) in a preset direction under the drive of the second drive unit (404); The protective device directly or indirectly abuts against the flexible track (401) and is adapted to cut off the power transmission from the second drive unit (404) to the drive wheel (402) when the tension of the flexible track (401) is greater than a preset threshold. A pressure wheel (409) and a drive wheel (402) are respectively disposed on opposite sides of the flexible track (401) and abut against the flexible track (401) to tension the flexible track (401); The clutch (405) has an engaged state that engages with the second drive unit (404) and an disengaged state that disengages from the second drive unit (404), and the clutch (405) is adapted to switch between the engaged state and the disengaged state according to the magnitude of the force exerted on the pressure wheel (409) by the flexible track (401). A connecting plate (406) is hinged to the trolley body (403). One end of the connecting plate (406) is fixedly connected to the pressure wheel (409), and the end of the connecting plate (406) away from the pressure wheel (409) is fixedly connected to the clutch (405). The compression wheel (409) is adapted to move upward when the tension of the flexible track (401) is greater than a preset threshold, and drive the clutch (405) to move downward via the connecting plate (406) to separate the clutch (405) from the second driving unit (404); Alternatively, the compression wheel (409) is adapted to move downward when the tension of the flexible track (401) is less than or equal to a preset threshold, and drive the clutch (405) to move upward via the connecting plate (406) to engage the clutch (405) with the second driving unit (404); The protection device further comprises a tensioning oil cylinder (408), one end of which is connected with the trolley body (403), and the other end of which is connected with the compression wheel (409), the tensioning oil cylinder (408) is adapted to provide a force acting on the compression wheel (409) in the direction of the flexible track (401), and is adapted to extend or retract according to the size of the force acting on the compression wheel (409) by the flexible track (401).

2. The material-retrieval system of claim 1, wherein, The first driving unit comprises: a driving motor (101); a driving sprocket (102), the outer periphery of which is in contact with the hopper chain (110), and the driving motor (101) is adapted to drive the hopper chain (110) to rotate via the driving sprocket (102).

3. The material-retrieval system of claim 2, wherein, The material taking device further comprises two tensioning sprockets (108) arranged at one end away from the driving sprocket (102) along the length direction of the chain bucket arm (104); The two tensioning sprockets (108) are adapted to stretch the hopper chain (110) and form at least a part of the hopper chain (110) into a material taking section (150) adapted to contact the material (30).

4. The material-retrieval system of claim 3, wherein, The end of the material taking section (150) and the driving sprocket (102) form a material lifting section (120) adapted to lift the material (30).

5. The material-retrieval system of claim 4, wherein, After the hopper chain (110) passes around the driving sprocket (102) from the end of the material lifting section (120), the orientation of the opening of the hopper (111) is changed and the material is discharged; A first redirecting sprocket (1051) is arranged between the driving sprocket (102) and the head of the material taking section (150); the hopper chain (110) forms a first descending section (130) between the driving sprocket (102) and the first redirecting sprocket (1051), and forms a second descending section (140) between the first redirecting sprocket (1051) and the head of the material taking section (150); The second descending section (140) is arranged at an angle with the first descending section (130); A second redirecting sprocket (1052) is arranged between the driving sprocket (102) and the first redirecting sprocket (1051), and the hopper chain (110) forms a discharging section (160) between the driving sprocket (102) and the second redirecting sprocket (1052).

6. An unloader characterized by Comprise: The material taking system according to any one of claims 1-5, wherein a running direction of the running trolley (13) is parallel to a rotation plane of the chain bucket arm (104), and a material taking direction of the material taking device (100) is along a ship length direction.

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